vendor/assets/leaflet/leaflet.js

   1 /*
   2  Leaflet, a JavaScript library for mobile-friendly interactive maps. http://leafletjs.com
   3  (c) 2010-2013, Vladimir Agafonkin, CloudMade
   4 */
   5 (function (window, document, undefined) {/*
   6  * The L namespace contains all Leaflet classes and functions.
   7  * This code allows you to handle any possible namespace conflicts.
   8  */
   9
  10 var L, originalL;
  11
  12 if (typeof exports !== undefined + '') {
  13         L = exports;
  14 } else {
  15         originalL = window.L;
  16         L = {};
  17
  18         L.noConflict = function () {
  19                 window.L = originalL;
  20                 return this;
  21         };
  22
  23         window.L = L;
  24 }
  25
  26 L.version = '0.5';
  27
  28
  29 /*
  30  * L.Util contains various utility functions used throughout Leaflet code.
  31  */
  32
  33 L.Util = {
  34         extend: function (dest) { // (Object[, Object, ...]) ->
  35                 var sources = Array.prototype.slice.call(arguments, 1),
  36                     i, j, len, src;
  37
  38                 for (j = 0, len = sources.length; j < len; j++) {
  39                         src = sources[j] || {};
  40                         for (i in src) {
  41                                 if (src.hasOwnProperty(i)) {
  42                                         dest[i] = src[i];
  43                                 }
  44                         }
  45                 }
  46                 return dest;
  47         },
  48
  49         bind: function (fn, obj) { // (Function, Object) -> Function
  50                 var args = arguments.length > 2 ? Array.prototype.slice.call(arguments, 2) : null;
  51                 return function () {
  52                         return fn.apply(obj, args || arguments);
  53                 };
  54         },
  55
  56         stamp: (function () {
  57                 var lastId = 0, key = '_leaflet_id';
  58                 return function (/*Object*/ obj) {
  59                         obj[key] = obj[key] || ++lastId;
  60                         return obj[key];
  61                 };
  62         }()),
  63
  64         limitExecByInterval: function (fn, time, context) {
  65                 var lock, execOnUnlock;
  66
  67                 return function wrapperFn() {
  68                         var args = arguments;
  69
  70                         if (lock) {
  71                                 execOnUnlock = true;
  72                                 return;
  73                         }
  74
  75                         lock = true;
  76
  77                         setTimeout(function () {
  78                                 lock = false;
  79
  80                                 if (execOnUnlock) {
  81                                         wrapperFn.apply(context, args);
  82                                         execOnUnlock = false;
  83                                 }
  84                         }, time);
  85
  86                         fn.apply(context, args);
  87                 };
  88         },
  89
  90         falseFn: function () {
  91                 return false;
  92         },
  93
  94         formatNum: function (num, digits) {
  95                 var pow = Math.pow(10, digits || 5);
  96                 return Math.round(num * pow) / pow;
  97         },
  98
  99         splitWords: function (str) {
 100                 return str.replace(/^\s+|\s+$/g, '').split(/\s+/);
 101         },
 102
 103         setOptions: function (obj, options) {
 104                 obj.options = L.extend({}, obj.options, options);
 105                 return obj.options;
 106         },
 107
 108         getParamString: function (obj, existingUrl) {
 109                 var params = [];
 110                 for (var i in obj) {
 111                         if (obj.hasOwnProperty(i)) {
 112                                 params.push(i + '=' + obj[i]);
 113                         }
 114                 }
 115                 return ((!existingUrl || existingUrl.indexOf('?') === -1) ? '?' : '&') + params.join('&');
 116         },
 117
 118         template: function (str, data) {
 119                 return str.replace(/\{ *([\w_]+) *\}/g, function (str, key) {
 120                         var value = data[key];
 121                         if (!data.hasOwnProperty(key)) {
 122                                 throw new Error('No value provided for variable ' + str);
 123                         }
 124                         return value;
 125                 });
 126         },
 127
 128         isArray: function (obj) {
 129                 return (Object.prototype.toString.call(obj) === '[object Array]');
 130         },
 131
 132         emptyImageUrl: 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='
 133 };
 134
 135 (function () {
 136
 137         // inspired by http://paulirish.com/2011/requestanimationframe-for-smart-animating/
 138
 139         function getPrefixed(name) {
 140                 var i, fn,
 141                     prefixes = ['webkit', 'moz', 'o', 'ms'];
 142
 143                 for (i = 0; i < prefixes.length && !fn; i++) {
 144                         fn = window[prefixes[i] + name];
 145                 }
 146
 147                 return fn;
 148         }
 149
 150         var lastTime = 0;
 151
 152         function timeoutDefer(fn) {
 153                 var time = +new Date(),
 154                     timeToCall = Math.max(0, 16 - (time - lastTime));
 155
 156                 lastTime = time + timeToCall;
 157                 return window.setTimeout(fn, timeToCall);
 158         }
 159
 160         var requestFn = window.requestAnimationFrame ||
 161                 getPrefixed('RequestAnimationFrame') || timeoutDefer;
 162
 163         var cancelFn = window.cancelAnimationFrame ||
 164                 getPrefixed('CancelAnimationFrame') ||
 165                 getPrefixed('CancelRequestAnimationFrame') ||
 166                 function (id) { window.clearTimeout(id); };
 167
 168
 169         L.Util.requestAnimFrame = function (fn, context, immediate, element) {
 170                 fn = L.bind(fn, context);
 171
 172                 if (immediate && requestFn === timeoutDefer) {
 173                         fn();
 174                 } else {
 175                         return requestFn.call(window, fn, element);
 176                 }
 177         };
 178
 179         L.Util.cancelAnimFrame = function (id) {
 180                 if (id) {
 181                         cancelFn.call(window, id);
 182                 }
 183         };
 184
 185 }());
 186
 187 // shortcuts for most used utility functions
 188 L.extend = L.Util.extend;
 189 L.bind = L.Util.bind;
 190 L.stamp = L.Util.stamp;
 191 L.setOptions = L.Util.setOptions;
 192
 193
 194 /*
 195  * L.Class powers the OOP facilities of the library.
 196  * Thanks to John Resig and Dean Edwards for inspiration!
 197  */
 198
 199 L.Class = function () {};
 200
 201 L.Class.extend = function (props) {
 202
 203         // extended class with the new prototype
 204         var NewClass = function () {
 205
 206                 // call the constructor
 207                 if (this.initialize) {
 208                         this.initialize.apply(this, arguments);
 209                 }
 210
 211                 // call all constructor hooks
 212                 if (this._initHooks) {
 213                         this.callInitHooks();
 214                 }
 215         };
 216
 217         // instantiate class without calling constructor
 218         var F = function () {};
 219         F.prototype = this.prototype;
 220
 221         var proto = new F();
 222         proto.constructor = NewClass;
 223
 224         NewClass.prototype = proto;
 225
 226         //inherit parent's statics
 227         for (var i in this) {
 228                 if (this.hasOwnProperty(i) && i !== 'prototype') {
 229                         NewClass[i] = this[i];
 230                 }
 231         }
 232
 233         // mix static properties into the class
 234         if (props.statics) {
 235                 L.extend(NewClass, props.statics);
 236                 delete props.statics;
 237         }
 238
 239         // mix includes into the prototype
 240         if (props.includes) {
 241                 L.Util.extend.apply(null, [proto].concat(props.includes));
 242                 delete props.includes;
 243         }
 244
 245         // merge options
 246         if (props.options && proto.options) {
 247                 props.options = L.extend({}, proto.options, props.options);
 248         }
 249
 250         // mix given properties into the prototype
 251         L.extend(proto, props);
 252
 253         proto._initHooks = [];
 254
 255         var parent = this;
 256         // add method for calling all hooks
 257         proto.callInitHooks = function () {
 258
 259                 if (this._initHooksCalled) { return; }
 260
 261                 if (parent.prototype.callInitHooks) {
 262                         parent.prototype.callInitHooks.call(this);
 263                 }
 264
 265                 this._initHooksCalled = true;
 266
 267                 for (var i = 0, len = proto._initHooks.length; i < len; i++) {
 268                         proto._initHooks[i].call(this);
 269                 }
 270         };
 271
 272         return NewClass;
 273 };
 274
 275
 276 // method for adding properties to prototype
 277 L.Class.include = function (props) {
 278         L.extend(this.prototype, props);
 279 };
 280
 281 // merge new default options to the Class
 282 L.Class.mergeOptions = function (options) {
 283         L.extend(this.prototype.options, options);
 284 };
 285
 286 // add a constructor hook
 287 L.Class.addInitHook = function (fn) { // (Function) || (String, args...)
 288         var args = Array.prototype.slice.call(arguments, 1);
 289
 290         var init = typeof fn === 'function' ? fn : function () {
 291                 this[fn].apply(this, args);
 292         };
 293
 294         this.prototype._initHooks = this.prototype._initHooks || [];
 295         this.prototype._initHooks.push(init);
 296 };
 297
 298
 299 /*
 300  * L.Mixin.Events is used to add custom events functionality to Leaflet classes.
 301  */
 302
 303 var key = '_leaflet_events';
 304
 305 L.Mixin = {};
 306
 307 L.Mixin.Events = {
 308
 309         addEventListener: function (types, fn, context) { // (String, Function[, Object]) or (Object[, Object])
 310                 var events = this[key] = this[key] || {},
 311                         type, i, len;
 312
 313                 // Types can be a map of types/handlers
 314                 if (typeof types === 'object') {
 315                         for (type in types) {
 316                                 if (types.hasOwnProperty(type)) {
 317                                         this.addEventListener(type, types[type], fn);
 318                                 }
 319                         }
 320
 321                         return this;
 322                 }
 323
 324                 types = L.Util.splitWords(types);
 325
 326                 for (i = 0, len = types.length; i < len; i++) {
 327                         events[types[i]] = events[types[i]] || [];
 328                         events[types[i]].push({
 329                                 action: fn,
 330                                 context: context || this
 331                         });
 332                 }
 333
 334                 return this;
 335         },
 336
 337         hasEventListeners: function (type) { // (String) -> Boolean
 338                 return (key in this) && (type in this[key]) && (this[key][type].length > 0);
 339         },
 340
 341         removeEventListener: function (types, fn, context) { // (String[, Function, Object]) or (Object[, Object])
 342                 var events = this[key],
 343                         type, i, len, listeners, j;
 344
 345                 if (typeof types === 'object') {
 346                         for (type in types) {
 347                                 if (types.hasOwnProperty(type)) {
 348                                         this.removeEventListener(type, types[type], fn);
 349                                 }
 350                         }
 351
 352                         return this;
 353                 }
 354
 355                 types = L.Util.splitWords(types);
 356
 357                 for (i = 0, len = types.length; i < len; i++) {
 358
 359                         if (this.hasEventListeners(types[i])) {
 360                                 listeners = events[types[i]];
 361
 362                                 for (j = listeners.length - 1; j >= 0; j--) {
 363                                         if (
 364                                                 (!fn || listeners[j].action === fn) &&
 365                                                 (!context || (listeners[j].context === context))
 366                                         ) {
 367                                                 listeners.splice(j, 1);
 368                                         }
 369                                 }
 370                         }
 371                 }
 372
 373                 return this;
 374         },
 375
 376         fireEvent: function (type, data) { // (String[, Object])
 377                 if (!this.hasEventListeners(type)) {
 378                         return this;
 379                 }
 380
 381                 var event = L.extend({
 382                         type: type,
 383                         target: this
 384                 }, data);
 385
 386                 var listeners = this[key][type].slice();
 387
 388                 for (var i = 0, len = listeners.length; i < len; i++) {
 389                         listeners[i].action.call(listeners[i].context || this, event);
 390                 }
 391
 392                 return this;
 393         }
 394 };
 395
 396 L.Mixin.Events.on = L.Mixin.Events.addEventListener;
 397 L.Mixin.Events.off = L.Mixin.Events.removeEventListener;
 398 L.Mixin.Events.fire = L.Mixin.Events.fireEvent;
 399
 400
 401 /*
 402  * L.Browser handles different browser and feature detections for internal Leaflet use.
 403  */
 404
 405 (function () {
 406
 407         var ie = !!window.ActiveXObject,
 408             ie6 = ie && !window.XMLHttpRequest,
 409             ie7 = ie && !document.querySelector,
 410
 411             // terrible browser detection to work around Safari / iOS / Android browser bugs
 412             ua = navigator.userAgent.toLowerCase(),
 413             webkit = ua.indexOf('webkit') !== -1,
 414             chrome = ua.indexOf('chrome') !== -1,
 415             android = ua.indexOf('android') !== -1,
 416             android23 = ua.search('android [23]') !== -1,
 417
 418             mobile = typeof orientation !== undefined + '',
 419             msTouch = window.navigator && window.navigator.msPointerEnabled &&
 420                       window.navigator.msMaxTouchPoints,
 421             retina = ('devicePixelRatio' in window && window.devicePixelRatio > 1) ||
 422                      ('matchMedia' in window && window.matchMedia('(min-resolution:144dpi)') &&
 423                       window.matchMedia('(min-resolution:144dpi)').matches),
 424
 425             doc = document.documentElement,
 426             ie3d = ie && ('transition' in doc.style),
 427             webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()),
 428             gecko3d = 'MozPerspective' in doc.style,
 429             opera3d = 'OTransition' in doc.style,
 430             any3d = !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d);
 431
 432
 433         var touch = !window.L_NO_TOUCH && (function () {
 434
 435                 var startName = 'ontouchstart';
 436
 437                 // IE10+ (We simulate these into touch* events in L.DomEvent and L.DomEvent.MsTouch) or WebKit, etc.
 438                 if (msTouch || (startName in doc)) {
 439                         return true;
 440                 }
 441
 442                 // Firefox/Gecko
 443                 var div = document.createElement('div'),
 444                     supported = false;
 445
 446                 if (!div.setAttribute) {
 447                         return false;
 448                 }
 449                 div.setAttribute(startName, 'return;');
 450
 451                 if (typeof div[startName] === 'function') {
 452                         supported = true;
 453                 }
 454
 455                 div.removeAttribute(startName);
 456                 div = null;
 457
 458                 return supported;
 459         }());
 460
 461
 462         L.Browser = {
 463                 ie: ie,
 464                 ie6: ie6,
 465                 ie7: ie7,
 466                 webkit: webkit,
 467
 468                 android: android,
 469                 android23: android23,
 470
 471                 chrome: chrome,
 472
 473                 ie3d: ie3d,
 474                 webkit3d: webkit3d,
 475                 gecko3d: gecko3d,
 476                 opera3d: opera3d,
 477                 any3d: any3d,
 478
 479                 mobile: mobile,
 480                 mobileWebkit: mobile && webkit,
 481                 mobileWebkit3d: mobile && webkit3d,
 482                 mobileOpera: mobile && window.opera,
 483
 484                 touch: touch,
 485                 msTouch: msTouch,
 486
 487                 retina: retina
 488         };
 489
 490 }());
 491
 492
 493 /*
 494  * L.Point represents a point with x and y coordinates.
 495  */
 496
 497 L.Point = function (/*Number*/ x, /*Number*/ y, /*Boolean*/ round) {
 498         this.x = (round ? Math.round(x) : x);
 499         this.y = (round ? Math.round(y) : y);
 500 };
 501
 502 L.Point.prototype = {
 503
 504         clone: function () {
 505                 return new L.Point(this.x, this.y);
 506         },
 507
 508         // non-destructive, returns a new point
 509         add: function (point) {
 510                 return this.clone()._add(L.point(point));
 511         },
 512
 513         // destructive, used directly for performance in situations where it's safe to modify existing point
 514         _add: function (point) {
 515                 this.x += point.x;
 516                 this.y += point.y;
 517                 return this;
 518         },
 519
 520         subtract: function (point) {
 521                 return this.clone()._subtract(L.point(point));
 522         },
 523
 524         _subtract: function (point) {
 525                 this.x -= point.x;
 526                 this.y -= point.y;
 527                 return this;
 528         },
 529
 530         divideBy: function (num) {
 531                 return this.clone()._divideBy(num);
 532         },
 533
 534         _divideBy: function (num) {
 535                 this.x /= num;
 536                 this.y /= num;
 537                 return this;
 538         },
 539
 540         multiplyBy: function (num) {
 541                 return this.clone()._multiplyBy(num);
 542         },
 543
 544         _multiplyBy: function (num) {
 545                 this.x *= num;
 546                 this.y *= num;
 547                 return this;
 548         },
 549
 550         round: function () {
 551                 return this.clone()._round();
 552         },
 553
 554         _round: function () {
 555                 this.x = Math.round(this.x);
 556                 this.y = Math.round(this.y);
 557                 return this;
 558         },
 559
 560         floor: function () {
 561                 return this.clone()._floor();
 562         },
 563
 564         _floor: function () {
 565                 this.x = Math.floor(this.x);
 566                 this.y = Math.floor(this.y);
 567                 return this;
 568         },
 569
 570         distanceTo: function (point) {
 571                 point = L.point(point);
 572
 573                 var x = point.x - this.x,
 574                     y = point.y - this.y;
 575
 576                 return Math.sqrt(x * x + y * y);
 577         },
 578
 579         equals: function (point) {
 580                 return point.x === this.x &&
 581                        point.y === this.y;
 582         },
 583
 584         toString: function () {
 585                 return 'Point(' +
 586                         L.Util.formatNum(this.x) + ', ' +
 587                         L.Util.formatNum(this.y) + ')';
 588         }
 589 };
 590
 591 L.point = function (x, y, round) {
 592         if (x instanceof L.Point) {
 593                 return x;
 594         }
 595         if (L.Util.isArray(x)) {
 596                 return new L.Point(x[0], x[1]);
 597         }
 598         if (isNaN(x)) {
 599                 return x;
 600         }
 601         return new L.Point(x, y, round);
 602 };
 603
 604
 605 /*
 606  * L.Bounds represents a rectangular area on the screen in pixel coordinates.
 607  */
 608
 609 L.Bounds = function (a, b) { //(Point, Point) or Point[]
 610         if (!a) { return; }
 611
 612         var points = b ? [a, b] : a;
 613
 614         for (var i = 0, len = points.length; i < len; i++) {
 615                 this.extend(points[i]);
 616         }
 617 };
 618
 619 L.Bounds.prototype = {
 620         // extend the bounds to contain the given point
 621         extend: function (point) { // (Point)
 622                 point = L.point(point);
 623
 624                 if (!this.min && !this.max) {
 625                         this.min = point.clone();
 626                         this.max = point.clone();
 627                 } else {
 628                         this.min.x = Math.min(point.x, this.min.x);
 629                         this.max.x = Math.max(point.x, this.max.x);
 630                         this.min.y = Math.min(point.y, this.min.y);
 631                         this.max.y = Math.max(point.y, this.max.y);
 632                 }
 633                 return this;
 634         },
 635
 636         getCenter: function (round) { // (Boolean) -> Point
 637                 return new L.Point(
 638                         (this.min.x + this.max.x) / 2,
 639                         (this.min.y + this.max.y) / 2, round);
 640         },
 641
 642         getBottomLeft: function () { // -> Point
 643                 return new L.Point(this.min.x, this.max.y);
 644         },
 645
 646         getTopRight: function () { // -> Point
 647                 return new L.Point(this.max.x, this.min.y);
 648         },
 649
 650         getSize: function () {
 651                 return this.max.subtract(this.min);
 652         },
 653
 654         contains: function (obj) { // (Bounds) or (Point) -> Boolean
 655                 var min, max;
 656
 657                 if (typeof obj[0] === 'number' || obj instanceof L.Point) {
 658                         obj = L.point(obj);
 659                 } else {
 660                         obj = L.bounds(obj);
 661                 }
 662
 663                 if (obj instanceof L.Bounds) {
 664                         min = obj.min;
 665                         max = obj.max;
 666                 } else {
 667                         min = max = obj;
 668                 }
 669
 670                 return (min.x >= this.min.x) &&
 671                        (max.x <= this.max.x) &&
 672                        (min.y >= this.min.y) &&
 673                        (max.y <= this.max.y);
 674         },
 675
 676         intersects: function (bounds) { // (Bounds) -> Boolean
 677                 bounds = L.bounds(bounds);
 678
 679                 var min = this.min,
 680                     max = this.max,
 681                     min2 = bounds.min,
 682                     max2 = bounds.max,
 683                     xIntersects = (max2.x >= min.x) && (min2.x <= max.x),
 684                     yIntersects = (max2.y >= min.y) && (min2.y <= max.y);
 685
 686                 return xIntersects && yIntersects;
 687         },
 688
 689         isValid: function () {
 690                 return !!(this.min && this.max);
 691         }
 692 };
 693
 694 L.bounds = function (a, b) { // (Bounds) or (Point, Point) or (Point[])
 695         if (!a || a instanceof L.Bounds) {
 696                 return a;
 697         }
 698         return new L.Bounds(a, b);
 699 };
 700
 701
 702 /*
 703  * L.Transformation is an utility class to perform simple point transformations through a 2d-matrix.
 704  */
 705
 706 L.Transformation = function (a, b, c, d) {
 707         this._a = a;
 708         this._b = b;
 709         this._c = c;
 710         this._d = d;
 711 };
 712
 713 L.Transformation.prototype = {
 714         transform: function (point, scale) { // (Point, Number) -> Point
 715                 return this._transform(point.clone(), scale);
 716         },
 717
 718         // destructive transform (faster)
 719         _transform: function (point, scale) {
 720                 scale = scale || 1;
 721                 point.x = scale * (this._a * point.x + this._b);
 722                 point.y = scale * (this._c * point.y + this._d);
 723                 return point;
 724         },
 725
 726         untransform: function (point, scale) {
 727                 scale = scale || 1;
 728                 return new L.Point(
 729                         (point.x / scale - this._b) / this._a,
 730                         (point.y / scale - this._d) / this._c);
 731         }
 732 };
 733
 734
 735 /*
 736  * L.DomUtil contains various utility functions for working with DOM.
 737  */
 738
 739 L.DomUtil = {
 740         get: function (id) {
 741                 return (typeof id === 'string' ? document.getElementById(id) : id);
 742         },
 743
 744         getStyle: function (el, style) {
 745
 746                 var value = el.style[style];
 747
 748                 if (!value && el.currentStyle) {
 749                         value = el.currentStyle[style];
 750                 }
 751
 752                 if ((!value || value === 'auto') && document.defaultView) {
 753                         var css = document.defaultView.getComputedStyle(el, null);
 754                         value = css ? css[style] : null;
 755                 }
 756
 757                 return value === 'auto' ? null : value;
 758         },
 759
 760         getViewportOffset: function (element) {
 761
 762                 var top = 0,
 763                     left = 0,
 764                     el = element,
 765                     docBody = document.body,
 766                     pos,
 767                     ie7 = L.Browser.ie7;
 768
 769                 do {
 770                         top  += el.offsetTop  || 0;
 771                         left += el.offsetLeft || 0;
 772
 773                         //add borders
 774                         top += parseInt(L.DomUtil.getStyle(el, "borderTopWidth"), 10) || 0;
 775                         left += parseInt(L.DomUtil.getStyle(el, "borderLeftWidth"), 10) || 0;
 776
 777                         pos = L.DomUtil.getStyle(el, 'position');
 778
 779                         if (el.offsetParent === docBody && pos === 'absolute') { break; }
 780
 781                         if (pos === 'fixed') {
 782                                 top  += docBody.scrollTop  || 0;
 783                                 left += docBody.scrollLeft || 0;
 784                                 break;
 785                         }
 786                         el = el.offsetParent;
 787
 788                 } while (el);
 789
 790                 el = element;
 791
 792                 do {
 793                         if (el === docBody) { break; }
 794
 795                         top  -= el.scrollTop  || 0;
 796                         left -= el.scrollLeft || 0;
 797
 798                         // webkit (and ie <= 7) handles RTL scrollLeft different to everyone else
 799                         // https://code.google.com/p/closure-library/source/browse/trunk/closure/goog/style/bidi.js
 800                         if (!L.DomUtil.documentIsLtr() && (L.Browser.webkit || ie7)) {
 801                                 left += el.scrollWidth - el.clientWidth;
 802
 803                                 // ie7 shows the scrollbar by default and provides clientWidth counting it, so we
 804                                 // need to add it back in if it is visible; scrollbar is on the left as we are RTL
 805                                 if (ie7 && L.DomUtil.getStyle(el, 'overflow-y') !== 'hidden' &&
 806                                            L.DomUtil.getStyle(el, 'overflow') !== 'hidden') {
 807                                         left += 17;
 808                                 }
 809                         }
 810
 811                         el = el.parentNode;
 812                 } while (el);
 813
 814                 return new L.Point(left, top);
 815         },
 816
 817         documentIsLtr: function () {
 818                 if (!L.DomUtil._docIsLtrCached) {
 819                         L.DomUtil._docIsLtrCached = true;
 820                         L.DomUtil._docIsLtr = L.DomUtil.getStyle(document.body, 'direction') === "ltr";
 821                 }
 822                 return L.DomUtil._docIsLtr;
 823         },
 824
 825         create: function (tagName, className, container) {
 826
 827                 var el = document.createElement(tagName);
 828                 el.className = className;
 829
 830                 if (container) {
 831                         container.appendChild(el);
 832                 }
 833
 834                 return el;
 835         },
 836
 837         disableTextSelection: function () {
 838                 if (document.selection && document.selection.empty) {
 839                         document.selection.empty();
 840                 }
 841                 if (!this._onselectstart) {
 842                         this._onselectstart = document.onselectstart || null;
 843                         document.onselectstart = L.Util.falseFn;
 844                 }
 845         },
 846
 847         enableTextSelection: function () {
 848                 if (document.onselectstart === L.Util.falseFn) {
 849                         document.onselectstart = this._onselectstart;
 850                         this._onselectstart = null;
 851                 }
 852         },
 853
 854         hasClass: function (el, name) {
 855                 return (el.className.length > 0) &&
 856                         new RegExp("(^|\\s)" + name + "(\\s|$)").test(el.className);
 857         },
 858
 859         addClass: function (el, name) {
 860                 if (!L.DomUtil.hasClass(el, name)) {
 861                         el.className += (el.className ? ' ' : '') + name;
 862                 }
 863         },
 864
 865         removeClass: function (el, name) {
 866
 867                 function replaceFn(w, match) {
 868                         if (match === name) { return ''; }
 869                         return w;
 870                 }
 871
 872                 el.className = el.className
 873                         .replace(/(\S+)\s*/g, replaceFn)
 874                         .replace(/(^\s+|\s+$)/, '');
 875         },
 876
 877         setOpacity: function (el, value) {
 878
 879                 if ('opacity' in el.style) {
 880                         el.style.opacity = value;
 881
 882                 } else if ('filter' in el.style) {
 883
 884                         var filter = false,
 885                             filterName = 'DXImageTransform.Microsoft.Alpha';
 886
 887                         // filters collection throws an error if we try to retrieve a filter that doesn't exist
 888                         try { filter = el.filters.item(filterName); } catch (e) {}
 889
 890                         value = Math.round(value * 100);
 891
 892                         if (filter) {
 893                                 filter.Enabled = (value !== 100);
 894                                 filter.Opacity = value;
 895                         } else {
 896                                 el.style.filter += ' progid:' + filterName + '(opacity=' + value + ')';
 897                         }
 898                 }
 899         },
 900
 901         testProp: function (props) {
 902
 903                 var style = document.documentElement.style;
 904
 905                 for (var i = 0; i < props.length; i++) {
 906                         if (props[i] in style) {
 907                                 return props[i];
 908                         }
 909                 }
 910                 return false;
 911         },
 912
 913         getTranslateString: function (point) {
 914                 // on WebKit browsers (Chrome/Safari/iOS Safari/Android) using translate3d instead of translate
 915                 // makes animation smoother as it ensures HW accel is used. Firefox 13 doesn't care
 916                 // (same speed either way), Opera 12 doesn't support translate3d
 917
 918                 var is3d = L.Browser.webkit3d,
 919                     open = 'translate' + (is3d ? '3d' : '') + '(',
 920                     close = (is3d ? ',0' : '') + ')';
 921
 922                 return open + point.x + 'px,' + point.y + 'px' + close;
 923         },
 924
 925         getScaleString: function (scale, origin) {
 926
 927                 var preTranslateStr = L.DomUtil.getTranslateString(origin.add(origin.multiplyBy(-1 * scale))),
 928                     scaleStr = ' scale(' + scale + ') ';
 929
 930                 return preTranslateStr + scaleStr;
 931         },
 932
 933         setPosition: function (el, point, disable3D) { // (HTMLElement, Point[, Boolean])
 934
 935                 el._leaflet_pos = point;
 936
 937                 if (!disable3D && L.Browser.any3d) {
 938                         el.style[L.DomUtil.TRANSFORM] =  L.DomUtil.getTranslateString(point);
 939
 940                         // workaround for Android 2/3 stability (https://github.com/CloudMade/Leaflet/issues/69)
 941                         if (L.Browser.mobileWebkit3d) {
 942                                 el.style.WebkitBackfaceVisibility = 'hidden';
 943                         }
 944                 } else {
 945                         el.style.left = point.x + 'px';
 946                         el.style.top = point.y + 'px';
 947                 }
 948         },
 949
 950         getPosition: function (el) {
 951                 // this method is only used for elements previously positioned using setPosition,
 952                 // so it's safe to cache the position for performance
 953                 return el._leaflet_pos;
 954         }
 955 };
 956
 957
 958 // prefix style property names
 959
 960 L.DomUtil.TRANSFORM = L.DomUtil.testProp(
 961         ['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform']);
 962
 963 // webkitTransition comes first because some browser versions that drop vendor prefix don't do
 964 // the same for the transitionend event, in particular the Android 4.1 stock browser
 965
 966 L.DomUtil.TRANSITION = L.DomUtil.testProp(
 967         ['webkitTransition', 'transition', 'OTransition', 'MozTransition', 'msTransition']);
 968
 969 L.DomUtil.TRANSITION_END =
 970         L.DomUtil.TRANSITION === 'webkitTransition' || L.DomUtil.TRANSITION === 'OTransition' ?
 971         L.DomUtil.TRANSITION + 'End' : 'transitionend';
 972
 973
 974 /*
 975  * L.LatLng represents a geographical point with latitude and longitude coordinates.
 976  */
 977
 978 L.LatLng = function (rawLat, rawLng) { // (Number, Number)
 979         var lat = parseFloat(rawLat),
 980             lng = parseFloat(rawLng);
 981
 982         if (isNaN(lat) || isNaN(lng)) {
 983                 throw new Error('Invalid LatLng object: (' + rawLat + ', ' + rawLng + ')');
 984         }
 985
 986         this.lat = lat;
 987         this.lng = lng;
 988 };
 989
 990 L.extend(L.LatLng, {
 991         DEG_TO_RAD: Math.PI / 180,
 992         RAD_TO_DEG: 180 / Math.PI,
 993         MAX_MARGIN: 1.0E-9 // max margin of error for the "equals" check
 994 });
 995
 996 L.LatLng.prototype = {
 997         equals: function (obj) { // (LatLng) -> Boolean
 998                 if (!obj) { return false; }
 999
1000                 obj = L.latLng(obj);
1001
1002                 var margin = Math.max(
1003                         Math.abs(this.lat - obj.lat),
1004                         Math.abs(this.lng - obj.lng));
1005
1006                 return margin <= L.LatLng.MAX_MARGIN;
1007         },
1008
1009         toString: function (precision) { // (Number) -> String
1010                 return 'LatLng(' +
1011                         L.Util.formatNum(this.lat, precision) + ', ' +
1012                         L.Util.formatNum(this.lng, precision) + ')';
1013         },
1014
1015         // Haversine distance formula, see http://en.wikipedia.org/wiki/Haversine_formula
1016         // TODO move to projection code, LatLng shouldn't know about Earth
1017         distanceTo: function (other) { // (LatLng) -> Number
1018                 other = L.latLng(other);
1019
1020                 var R = 6378137, // earth radius in meters
1021                     d2r = L.LatLng.DEG_TO_RAD,
1022                     dLat = (other.lat - this.lat) * d2r,
1023                     dLon = (other.lng - this.lng) * d2r,
1024                     lat1 = this.lat * d2r,
1025                     lat2 = other.lat * d2r,
1026                     sin1 = Math.sin(dLat / 2),
1027                     sin2 = Math.sin(dLon / 2);
1028
1029                 var a = sin1 * sin1 + sin2 * sin2 * Math.cos(lat1) * Math.cos(lat2);
1030
1031                 return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
1032         },
1033
1034         wrap: function (a, b) { // (Number, Number) -> LatLng
1035                 var lng = this.lng;
1036
1037                 a = a || -180;
1038                 b = b ||  180;
1039
1040                 lng = (lng + b) % (b - a) + (lng < a || lng === b ? b : a);
1041
1042                 return new L.LatLng(this.lat, lng);
1043         }
1044 };
1045
1046 L.latLng = function (a, b) { // (LatLng) or ([Number, Number]) or (Number, Number)
1047         if (a instanceof L.LatLng) {
1048                 return a;
1049         }
1050         if (L.Util.isArray(a)) {
1051                 return new L.LatLng(a[0], a[1]);
1052         }
1053         if (isNaN(a)) {
1054                 return a;
1055         }
1056         return new L.LatLng(a, b);
1057 };
1058
1059
1060
1061 /*
1062  * L.LatLngBounds represents a rectangular area on the map in geographical coordinates.
1063  */
1064
1065 L.LatLngBounds = function (southWest, northEast) { // (LatLng, LatLng) or (LatLng[])
1066         if (!southWest) { return; }
1067
1068         var latlngs = northEast ? [southWest, northEast] : southWest;
1069
1070         for (var i = 0, len = latlngs.length; i < len; i++) {
1071                 this.extend(latlngs[i]);
1072         }
1073 };
1074
1075 L.LatLngBounds.prototype = {
1076         // extend the bounds to contain the given point or bounds
1077         extend: function (obj) { // (LatLng) or (LatLngBounds)
1078                 if (typeof obj[0] === 'number' || typeof obj[0] === 'string' || obj instanceof L.LatLng) {
1079                         obj = L.latLng(obj);
1080                 } else {
1081                         obj = L.latLngBounds(obj);
1082                 }
1083
1084                 if (obj instanceof L.LatLng) {
1085                         if (!this._southWest && !this._northEast) {
1086                                 this._southWest = new L.LatLng(obj.lat, obj.lng);
1087                                 this._northEast = new L.LatLng(obj.lat, obj.lng);
1088                         } else {
1089                                 this._southWest.lat = Math.min(obj.lat, this._southWest.lat);
1090                                 this._southWest.lng = Math.min(obj.lng, this._southWest.lng);
1091
1092                                 this._northEast.lat = Math.max(obj.lat, this._northEast.lat);
1093                                 this._northEast.lng = Math.max(obj.lng, this._northEast.lng);
1094                         }
1095                 } else if (obj instanceof L.LatLngBounds) {
1096                         this.extend(obj._southWest);
1097                         this.extend(obj._northEast);
1098                 }
1099                 return this;
1100         },
1101
1102         // extend the bounds by a percentage
1103         pad: function (bufferRatio) { // (Number) -> LatLngBounds
1104                 var sw = this._southWest,
1105                     ne = this._northEast,
1106                     heightBuffer = Math.abs(sw.lat - ne.lat) * bufferRatio,
1107                     widthBuffer = Math.abs(sw.lng - ne.lng) * bufferRatio;
1108
1109                 return new L.LatLngBounds(
1110                         new L.LatLng(sw.lat - heightBuffer, sw.lng - widthBuffer),
1111                         new L.LatLng(ne.lat + heightBuffer, ne.lng + widthBuffer));
1112         },
1113
1114         getCenter: function () { // -> LatLng
1115                 return new L.LatLng(
1116                         (this._southWest.lat + this._northEast.lat) / 2,
1117                         (this._southWest.lng + this._northEast.lng) / 2);
1118         },
1119
1120         getSouthWest: function () {
1121                 return this._southWest;
1122         },
1123
1124         getNorthEast: function () {
1125                 return this._northEast;
1126         },
1127
1128         getNorthWest: function () {
1129                 return new L.LatLng(this._northEast.lat, this._southWest.lng);
1130         },
1131
1132         getSouthEast: function () {
1133                 return new L.LatLng(this._southWest.lat, this._northEast.lng);
1134         },
1135
1136         contains: function (obj) { // (LatLngBounds) or (LatLng) -> Boolean
1137                 if (typeof obj[0] === 'number' || obj instanceof L.LatLng) {
1138                         obj = L.latLng(obj);
1139                 } else {
1140                         obj = L.latLngBounds(obj);
1141                 }
1142
1143                 var sw = this._southWest,
1144                     ne = this._northEast,
1145                     sw2, ne2;
1146
1147                 if (obj instanceof L.LatLngBounds) {
1148                         sw2 = obj.getSouthWest();
1149                         ne2 = obj.getNorthEast();
1150                 } else {
1151                         sw2 = ne2 = obj;
1152                 }
1153
1154                 return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) &&
1155                        (sw2.lng >= sw.lng) && (ne2.lng <= ne.lng);
1156         },
1157
1158         intersects: function (bounds) { // (LatLngBounds)
1159                 bounds = L.latLngBounds(bounds);
1160
1161                 var sw = this._southWest,
1162                     ne = this._northEast,
1163                     sw2 = bounds.getSouthWest(),
1164                     ne2 = bounds.getNorthEast(),
1165
1166                     latIntersects = (ne2.lat >= sw.lat) && (sw2.lat <= ne.lat),
1167                     lngIntersects = (ne2.lng >= sw.lng) && (sw2.lng <= ne.lng);
1168
1169                 return latIntersects && lngIntersects;
1170         },
1171
1172         toBBoxString: function () {
1173                 var sw = this._southWest,
1174                     ne = this._northEast;
1175
1176                 return [sw.lng, sw.lat, ne.lng, ne.lat].join(',');
1177         },
1178
1179         equals: function (bounds) { // (LatLngBounds)
1180                 if (!bounds) { return false; }
1181
1182                 bounds = L.latLngBounds(bounds);
1183
1184                 return this._southWest.equals(bounds.getSouthWest()) &&
1185                        this._northEast.equals(bounds.getNorthEast());
1186         },
1187
1188         isValid: function () {
1189                 return !!(this._southWest && this._northEast);
1190         }
1191 };
1192
1193 //TODO International date line?
1194
1195 L.latLngBounds = function (a, b) { // (LatLngBounds) or (LatLng, LatLng)
1196         if (!a || a instanceof L.LatLngBounds) {
1197                 return a;
1198         }
1199         return new L.LatLngBounds(a, b);
1200 };
1201
1202
1203 /*
1204  * L.Projection contains various geographical projections used by CRS classes.
1205  */
1206
1207 L.Projection = {};
1208
1209
1210 /*
1211  * Spherical Mercator is the most popular map projection, used by EPSG:3857 CRS used by default.
1212  */
1213
1214 L.Projection.SphericalMercator = {
1215         MAX_LATITUDE: 85.0511287798,
1216
1217         project: function (latlng) { // (LatLng) -> Point
1218                 var d = L.LatLng.DEG_TO_RAD,
1219                     max = this.MAX_LATITUDE,
1220                     lat = Math.max(Math.min(max, latlng.lat), -max),
1221                     x = latlng.lng * d,
1222                     y = lat * d;
1223
1224                 y = Math.log(Math.tan((Math.PI / 4) + (y / 2)));
1225
1226                 return new L.Point(x, y);
1227         },
1228
1229         unproject: function (point) { // (Point, Boolean) -> LatLng
1230                 var d = L.LatLng.RAD_TO_DEG,
1231                     lng = point.x * d,
1232                     lat = (2 * Math.atan(Math.exp(point.y)) - (Math.PI / 2)) * d;
1233
1234                 return new L.LatLng(lat, lng);
1235         }
1236 };
1237
1238
1239 /*
1240  * Simple equirectangular (Plate Carree) projection, used by CRS like EPSG:4326 and Simple.
1241  */
1242
1243 L.Projection.LonLat = {
1244         project: function (latlng) {
1245                 return new L.Point(latlng.lng, latlng.lat);
1246         },
1247
1248         unproject: function (point) {
1249                 return new L.LatLng(point.y, point.x);
1250         }
1251 };
1252
1253
1254 /*
1255  * L.CRS is a base object for all defined CRS (Coordinate Reference Systems) in Leaflet.
1256  */
1257
1258 L.CRS = {
1259         latLngToPoint: function (latlng, zoom) { // (LatLng, Number) -> Point
1260                 var projectedPoint = this.projection.project(latlng),
1261                     scale = this.scale(zoom);
1262
1263                 return this.transformation._transform(projectedPoint, scale);
1264         },
1265
1266         pointToLatLng: function (point, zoom) { // (Point, Number[, Boolean]) -> LatLng
1267                 var scale = this.scale(zoom),
1268                     untransformedPoint = this.transformation.untransform(point, scale);
1269
1270                 return this.projection.unproject(untransformedPoint);
1271         },
1272
1273         project: function (latlng) {
1274                 return this.projection.project(latlng);
1275         },
1276
1277         scale: function (zoom) {
1278                 return 256 * Math.pow(2, zoom);
1279         }
1280 };
1281
1282
1283 /*
1284  * A simple CRS that can be used for flat non-Earth maps like panoramas or game maps.
1285  */
1286
1287 L.CRS.Simple = L.extend({}, L.CRS, {
1288         projection: L.Projection.LonLat,
1289         transformation: new L.Transformation(1, 0, -1, 0),
1290
1291         scale: function (zoom) {
1292                 return Math.pow(2, zoom);
1293         }
1294 });
1295
1296
1297 /*
1298  * L.CRS.EPSG3857 (Spherical Mercator) is the most common CRS for web mapping
1299  * and is used by Leaflet by default.
1300  */
1301
1302 L.CRS.EPSG3857 = L.extend({}, L.CRS, {
1303         code: 'EPSG:3857',
1304
1305         projection: L.Projection.SphericalMercator,
1306         transformation: new L.Transformation(0.5 / Math.PI, 0.5, -0.5 / Math.PI, 0.5),
1307
1308         project: function (latlng) { // (LatLng) -> Point
1309                 var projectedPoint = this.projection.project(latlng),
1310                     earthRadius = 6378137;
1311                 return projectedPoint.multiplyBy(earthRadius);
1312         }
1313 });
1314
1315 L.CRS.EPSG900913 = L.extend({}, L.CRS.EPSG3857, {
1316         code: 'EPSG:900913'
1317 });
1318
1319
1320 /*
1321  * L.CRS.EPSG4326 is a CRS popular among advanced GIS specialists.
1322  */
1323
1324 L.CRS.EPSG4326 = L.extend({}, L.CRS, {
1325         code: 'EPSG:4326',
1326
1327         projection: L.Projection.LonLat,
1328         transformation: new L.Transformation(1 / 360, 0.5, -1 / 360, 0.5)
1329 });
1330
1331
1332 /*
1333  * L.Map is the central class of the API - it is used to create a map.
1334  */
1335
1336 L.Map = L.Class.extend({
1337
1338         includes: L.Mixin.Events,
1339
1340         options: {
1341                 crs: L.CRS.EPSG3857,
1342
1343                 /*
1344                 center: LatLng,
1345                 zoom: Number,
1346                 layers: Array,
1347                 */
1348
1349                 fadeAnimation: L.DomUtil.TRANSITION && !L.Browser.android23,
1350                 trackResize: true,
1351                 markerZoomAnimation: L.DomUtil.TRANSITION && L.Browser.any3d
1352         },
1353
1354         initialize: function (id, options) { // (HTMLElement or String, Object)
1355                 options = L.setOptions(this, options);
1356
1357                 this._initContainer(id);
1358                 this._initLayout();
1359                 this.callInitHooks();
1360                 this._initEvents();
1361
1362                 if (options.maxBounds) {
1363                         this.setMaxBounds(options.maxBounds);
1364                 }
1365
1366                 if (options.center && options.zoom !== undefined) {
1367                         this.setView(L.latLng(options.center), options.zoom, true);
1368                 }
1369
1370                 this._initLayers(options.layers);
1371         },
1372
1373
1374         // public methods that modify map state
1375
1376         // replaced by animation-powered implementation in Map.PanAnimation.js
1377         setView: function (center, zoom) {
1378                 this._resetView(L.latLng(center), this._limitZoom(zoom));
1379                 return this;
1380         },
1381
1382         setZoom: function (zoom) { // (Number)
1383                 return this.setView(this.getCenter(), zoom);
1384         },
1385
1386         zoomIn: function (delta) {
1387                 return this.setZoom(this._zoom + (delta || 1));
1388         },
1389
1390         zoomOut: function (delta) {
1391                 return this.setZoom(this._zoom - (delta || 1));
1392         },
1393
1394         fitBounds: function (bounds) { // (LatLngBounds)
1395                 var zoom = this.getBoundsZoom(bounds);
1396                 return this.setView(L.latLngBounds(bounds).getCenter(), zoom);
1397         },
1398
1399         fitWorld: function () {
1400                 var sw = new L.LatLng(-60, -170),
1401                     ne = new L.LatLng(85, 179);
1402
1403                 return this.fitBounds(new L.LatLngBounds(sw, ne));
1404         },
1405
1406         panTo: function (center) { // (LatLng)
1407                 return this.setView(center, this._zoom);
1408         },
1409
1410         panBy: function (offset) { // (Point)
1411                 // replaced with animated panBy in Map.Animation.js
1412                 this.fire('movestart');
1413
1414                 this._rawPanBy(L.point(offset));
1415
1416                 this.fire('move');
1417                 return this.fire('moveend');
1418         },
1419
1420         setMaxBounds: function (bounds) {
1421                 bounds = L.latLngBounds(bounds);
1422
1423                 this.options.maxBounds = bounds;
1424
1425                 if (!bounds) {
1426                         this._boundsMinZoom = null;
1427                         return this;
1428                 }
1429
1430                 var minZoom = this.getBoundsZoom(bounds, true);
1431
1432                 this._boundsMinZoom = minZoom;
1433
1434                 if (this._loaded) {
1435                         if (this._zoom < minZoom) {
1436                                 this.setView(bounds.getCenter(), minZoom);
1437                         } else {
1438                                 this.panInsideBounds(bounds);
1439                         }
1440                 }
1441
1442                 return this;
1443         },
1444
1445         panInsideBounds: function (bounds) {
1446                 bounds = L.latLngBounds(bounds);
1447
1448                 var viewBounds = this.getBounds(),
1449                     viewSw = this.project(viewBounds.getSouthWest()),
1450                     viewNe = this.project(viewBounds.getNorthEast()),
1451                     sw = this.project(bounds.getSouthWest()),
1452                     ne = this.project(bounds.getNorthEast()),
1453                     dx = 0,
1454                     dy = 0;
1455
1456                 if (viewNe.y < ne.y) { // north
1457                         dy = ne.y - viewNe.y;
1458                 }
1459                 if (viewNe.x > ne.x) { // east
1460                         dx = ne.x - viewNe.x;
1461                 }
1462                 if (viewSw.y > sw.y) { // south
1463                         dy = sw.y - viewSw.y;
1464                 }
1465                 if (viewSw.x < sw.x) { // west
1466                         dx = sw.x - viewSw.x;
1467                 }
1468
1469                 return this.panBy(new L.Point(dx, dy, true));
1470         },
1471
1472         addLayer: function (layer) {
1473                 // TODO method is too big, refactor
1474
1475                 var id = L.stamp(layer);
1476
1477                 if (this._layers[id]) { return this; }
1478
1479                 this._layers[id] = layer;
1480
1481                 // TODO getMaxZoom, getMinZoom in ILayer (instead of options)
1482                 if (layer.options && (!isNaN(layer.options.maxZoom) || !isNaN(layer.options.minZoom))) {
1483                         this._zoomBoundLayers[id] = layer;
1484                         this._updateZoomLevels();
1485                 }
1486
1487                 // TODO looks ugly, refactor!!!
1488                 if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
1489                         this._tileLayersNum++;
1490             this._tileLayersToLoad++;
1491             layer.on('load', this._onTileLayerLoad, this);
1492                 }
1493
1494                 this.whenReady(function () {
1495                         layer.onAdd(this);
1496                         this.fire('layeradd', {layer: layer});
1497                 }, this);
1498
1499                 return this;
1500         },
1501
1502         removeLayer: function (layer) {
1503                 var id = L.stamp(layer);
1504
1505                 if (!this._layers[id]) { return; }
1506
1507                 layer.onRemove(this);
1508
1509                 delete this._layers[id];
1510                 if (this._zoomBoundLayers[id]) {
1511                         delete this._zoomBoundLayers[id];
1512                         this._updateZoomLevels();
1513                 }
1514
1515                 // TODO looks ugly, refactor
1516                 if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
1517                         this._tileLayersNum--;
1518             this._tileLayersToLoad--;
1519             layer.off('load', this._onTileLayerLoad, this);
1520                 }
1521
1522                 return this.fire('layerremove', {layer: layer});
1523         },
1524
1525         hasLayer: function (layer) {
1526                 var id = L.stamp(layer);
1527                 return this._layers.hasOwnProperty(id);
1528         },
1529
1530         invalidateSize: function (animate) {
1531                 var oldSize = this.getSize();
1532
1533                 this._sizeChanged = true;
1534
1535                 if (this.options.maxBounds) {
1536                         this.setMaxBounds(this.options.maxBounds);
1537                 }
1538
1539                 if (!this._loaded) { return this; }
1540
1541                 var offset = oldSize._subtract(this.getSize())._divideBy(2)._round();
1542
1543                 if (animate === true) {
1544                         this.panBy(offset);
1545                 } else {
1546                         this._rawPanBy(offset);
1547
1548                         this.fire('move');
1549
1550                         clearTimeout(this._sizeTimer);
1551                         this._sizeTimer = setTimeout(L.bind(this.fire, this, 'moveend'), 200);
1552                 }
1553                 return this;
1554         },
1555
1556         // TODO handler.addTo
1557         addHandler: function (name, HandlerClass) {
1558                 if (!HandlerClass) { return; }
1559
1560                 this[name] = new HandlerClass(this);
1561
1562                 if (this.options[name]) {
1563                         this[name].enable();
1564                 }
1565
1566                 return this;
1567         },
1568
1569
1570         // public methods for getting map state
1571
1572         getCenter: function () { // (Boolean) -> LatLng
1573                 return this.layerPointToLatLng(this._getCenterLayerPoint());
1574         },
1575
1576         getZoom: function () {
1577                 return this._zoom;
1578         },
1579
1580         getBounds: function () {
1581                 var bounds = this.getPixelBounds(),
1582                     sw = this.unproject(bounds.getBottomLeft()),
1583                     ne = this.unproject(bounds.getTopRight());
1584
1585                 return new L.LatLngBounds(sw, ne);
1586         },
1587
1588         getMinZoom: function () {
1589                 var z1 = this.options.minZoom || 0,
1590                     z2 = this._layersMinZoom || 0,
1591                     z3 = this._boundsMinZoom || 0;
1592
1593                 return Math.max(z1, z2, z3);
1594         },
1595
1596         getMaxZoom: function () {
1597                 var z1 = this.options.maxZoom === undefined ? Infinity : this.options.maxZoom,
1598                     z2 = this._layersMaxZoom  === undefined ? Infinity : this._layersMaxZoom;
1599
1600                 return Math.min(z1, z2);
1601         },
1602
1603         getBoundsZoom: function (bounds, inside) { // (LatLngBounds, Boolean) -> Number
1604                 bounds = L.latLngBounds(bounds);
1605
1606                 var size = this.getSize(),
1607                     zoom = this.options.minZoom || 0,
1608                     maxZoom = this.getMaxZoom(),
1609                     ne = bounds.getNorthEast(),
1610                     sw = bounds.getSouthWest(),
1611                     boundsSize,
1612                     nePoint,
1613                     swPoint,
1614                     zoomNotFound = true;
1615
1616                 if (inside) {
1617                         zoom--;
1618                 }
1619
1620                 do {
1621                         zoom++;
1622                         nePoint = this.project(ne, zoom);
1623                         swPoint = this.project(sw, zoom);
1624
1625                         boundsSize = new L.Point(
1626                                 Math.abs(nePoint.x - swPoint.x),
1627                                 Math.abs(swPoint.y - nePoint.y));
1628
1629                         if (!inside) {
1630                                 zoomNotFound = boundsSize.x <= size.x && boundsSize.y <= size.y;
1631                         } else {
1632                                 zoomNotFound = boundsSize.x < size.x || boundsSize.y < size.y;
1633                         }
1634                 } while (zoomNotFound && zoom <= maxZoom);
1635
1636                 if (zoomNotFound && inside) {
1637                         return null;
1638                 }
1639
1640                 return inside ? zoom : zoom - 1;
1641         },
1642
1643         getSize: function () {
1644                 if (!this._size || this._sizeChanged) {
1645                         this._size = new L.Point(
1646                                 this._container.clientWidth,
1647                                 this._container.clientHeight);
1648
1649                         this._sizeChanged = false;
1650                 }
1651                 return this._size.clone();
1652         },
1653
1654         getPixelBounds: function () {
1655                 var topLeftPoint = this._getTopLeftPoint();
1656                 return new L.Bounds(topLeftPoint, topLeftPoint.add(this.getSize()));
1657         },
1658
1659         getPixelOrigin: function () {
1660                 return this._initialTopLeftPoint;
1661         },
1662
1663         getPanes: function () {
1664                 return this._panes;
1665         },
1666
1667         getContainer: function () {
1668                 return this._container;
1669         },
1670
1671
1672         // TODO replace with universal implementation after refactoring projections
1673
1674         getZoomScale: function (toZoom) {
1675                 var crs = this.options.crs;
1676                 return crs.scale(toZoom) / crs.scale(this._zoom);
1677         },
1678
1679         getScaleZoom: function (scale) {
1680                 return this._zoom + (Math.log(scale) / Math.LN2);
1681         },
1682
1683
1684         // conversion methods
1685
1686         project: function (latlng, zoom) { // (LatLng[, Number]) -> Point
1687                 zoom = zoom === undefined ? this._zoom : zoom;
1688                 return this.options.crs.latLngToPoint(L.latLng(latlng), zoom);
1689         },
1690
1691         unproject: function (point, zoom) { // (Point[, Number]) -> LatLng
1692                 zoom = zoom === undefined ? this._zoom : zoom;
1693                 return this.options.crs.pointToLatLng(L.point(point), zoom);
1694         },
1695
1696         layerPointToLatLng: function (point) { // (Point)
1697                 var projectedPoint = L.point(point).add(this._initialTopLeftPoint);
1698                 return this.unproject(projectedPoint);
1699         },
1700
1701         latLngToLayerPoint: function (latlng) { // (LatLng)
1702                 var projectedPoint = this.project(L.latLng(latlng))._round();
1703                 return projectedPoint._subtract(this._initialTopLeftPoint);
1704         },
1705
1706         containerPointToLayerPoint: function (point) { // (Point)
1707                 return L.point(point).subtract(this._getMapPanePos());
1708         },
1709
1710         layerPointToContainerPoint: function (point) { // (Point)
1711                 return L.point(point).add(this._getMapPanePos());
1712         },
1713
1714         containerPointToLatLng: function (point) {
1715                 var layerPoint = this.containerPointToLayerPoint(L.point(point));
1716                 return this.layerPointToLatLng(layerPoint);
1717         },
1718
1719         latLngToContainerPoint: function (latlng) {
1720                 return this.layerPointToContainerPoint(this.latLngToLayerPoint(L.latLng(latlng)));
1721         },
1722
1723         mouseEventToContainerPoint: function (e) { // (MouseEvent)
1724                 return L.DomEvent.getMousePosition(e, this._container);
1725         },
1726
1727         mouseEventToLayerPoint: function (e) { // (MouseEvent)
1728                 return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(e));
1729         },
1730
1731         mouseEventToLatLng: function (e) { // (MouseEvent)
1732                 return this.layerPointToLatLng(this.mouseEventToLayerPoint(e));
1733         },
1734
1735
1736         // map initialization methods
1737
1738         _initContainer: function (id) {
1739                 var container = this._container = L.DomUtil.get(id);
1740
1741                 if (container._leaflet) {
1742                         throw new Error("Map container is already initialized.");
1743                 }
1744
1745                 container._leaflet = true;
1746         },
1747
1748         _initLayout: function () {
1749                 var container = this._container;
1750
1751                 L.DomUtil.addClass(container, 'leaflet-container');
1752
1753                 if (L.Browser.touch) {
1754                         L.DomUtil.addClass(container, 'leaflet-touch');
1755                 }
1756
1757                 if (this.options.fadeAnimation) {
1758                         L.DomUtil.addClass(container, 'leaflet-fade-anim');
1759                 }
1760
1761                 var position = L.DomUtil.getStyle(container, 'position');
1762
1763                 if (position !== 'absolute' && position !== 'relative' && position !== 'fixed') {
1764                         container.style.position = 'relative';
1765                 }
1766
1767                 this._initPanes();
1768
1769                 if (this._initControlPos) {
1770                         this._initControlPos();
1771                 }
1772         },
1773
1774         _initPanes: function () {
1775                 var panes = this._panes = {};
1776
1777                 this._mapPane = panes.mapPane = this._createPane('leaflet-map-pane', this._container);
1778
1779                 this._tilePane = panes.tilePane = this._createPane('leaflet-tile-pane', this._mapPane);
1780                 panes.objectsPane = this._createPane('leaflet-objects-pane', this._mapPane);
1781                 panes.shadowPane = this._createPane('leaflet-shadow-pane');
1782                 panes.overlayPane = this._createPane('leaflet-overlay-pane');
1783                 panes.markerPane = this._createPane('leaflet-marker-pane');
1784                 panes.popupPane = this._createPane('leaflet-popup-pane');
1785
1786                 var zoomHide = ' leaflet-zoom-hide';
1787
1788                 if (!this.options.markerZoomAnimation) {
1789                         L.DomUtil.addClass(panes.markerPane, zoomHide);
1790                         L.DomUtil.addClass(panes.shadowPane, zoomHide);
1791                         L.DomUtil.addClass(panes.popupPane, zoomHide);
1792                 }
1793         },
1794
1795         _createPane: function (className, container) {
1796                 return L.DomUtil.create('div', className, container || this._panes.objectsPane);
1797         },
1798
1799         _initLayers: function (layers) {
1800                 layers = layers ? (L.Util.isArray(layers) ? layers : [layers]) : [];
1801
1802                 this._layers = {};
1803                 this._zoomBoundLayers = {};
1804                 this._tileLayersNum = 0;
1805
1806                 var i, len;
1807
1808                 for (i = 0, len = layers.length; i < len; i++) {
1809                         this.addLayer(layers[i]);
1810                 }
1811         },
1812
1813
1814         // private methods that modify map state
1815
1816         _resetView: function (center, zoom, preserveMapOffset, afterZoomAnim) {
1817
1818                 var zoomChanged = (this._zoom !== zoom);
1819
1820                 if (!afterZoomAnim) {
1821                         this.fire('movestart');
1822
1823                         if (zoomChanged) {
1824                                 this.fire('zoomstart');
1825                         }
1826                 }
1827
1828                 this._zoom = zoom;
1829
1830                 this._initialTopLeftPoint = this._getNewTopLeftPoint(center);
1831
1832                 if (!preserveMapOffset) {
1833                         L.DomUtil.setPosition(this._mapPane, new L.Point(0, 0));
1834                 } else {
1835                         this._initialTopLeftPoint._add(this._getMapPanePos());
1836                 }
1837
1838                 this._tileLayersToLoad = this._tileLayersNum;
1839
1840                 var loading = !this._loaded;
1841                 this._loaded = true;
1842
1843                 this.fire('viewreset', {hard: !preserveMapOffset});
1844
1845                 this.fire('move');
1846
1847                 if (zoomChanged || afterZoomAnim) {
1848                         this.fire('zoomend');
1849                 }
1850
1851                 this.fire('moveend', {hard: !preserveMapOffset});
1852
1853                 if (loading) {
1854                         this.fire('load');
1855                 }
1856         },
1857
1858         _rawPanBy: function (offset) {
1859                 L.DomUtil.setPosition(this._mapPane, this._getMapPanePos().subtract(offset));
1860         },
1861
1862         _updateZoomLevels: function () {
1863                 var i,
1864                         minZoom = Infinity,
1865                         maxZoom = -Infinity;
1866
1867                 for (i in this._zoomBoundLayers) {
1868                         if (this._zoomBoundLayers.hasOwnProperty(i)) {
1869                                 var layer = this._zoomBoundLayers[i];
1870                                 if (!isNaN(layer.options.minZoom)) {
1871                                         minZoom = Math.min(minZoom, layer.options.minZoom);
1872                                 }
1873                                 if (!isNaN(layer.options.maxZoom)) {
1874                                         maxZoom = Math.max(maxZoom, layer.options.maxZoom);
1875                                 }
1876                         }
1877                 }
1878
1879                 if (i === undefined) { // we have no tilelayers
1880                         this._layersMaxZoom = this._layersMinZoom = undefined;
1881                 } else {
1882                         this._layersMaxZoom = maxZoom;
1883                         this._layersMinZoom = minZoom;
1884                 }
1885         },
1886
1887         // map events
1888
1889         _initEvents: function () {
1890                 if (!L.DomEvent) { return; }
1891
1892                 L.DomEvent.on(this._container, 'click', this._onMouseClick, this);
1893
1894                 var events = ['dblclick', 'mousedown', 'mouseup', 'mouseenter',
1895                               'mouseleave', 'mousemove', 'contextmenu'],
1896                     i, len;
1897
1898                 for (i = 0, len = events.length; i < len; i++) {
1899                         L.DomEvent.on(this._container, events[i], this._fireMouseEvent, this);
1900                 }
1901
1902                 if (this.options.trackResize) {
1903                         L.DomEvent.on(window, 'resize', this._onResize, this);
1904                 }
1905         },
1906
1907         _onResize: function () {
1908                 L.Util.cancelAnimFrame(this._resizeRequest);
1909                 this._resizeRequest = L.Util.requestAnimFrame(
1910                         this.invalidateSize, this, false, this._container);
1911         },
1912
1913         _onMouseClick: function (e) {
1914                 if (!this._loaded || (this.dragging && this.dragging.moved())) { return; }
1915
1916                 this.fire('preclick');
1917                 this._fireMouseEvent(e);
1918         },
1919
1920         _fireMouseEvent: function (e) {
1921                 if (!this._loaded) { return; }
1922
1923                 var type = e.type;
1924
1925                 type = (type === 'mouseenter' ? 'mouseover' : (type === 'mouseleave' ? 'mouseout' : type));
1926
1927                 if (!this.hasEventListeners(type)) { return; }
1928
1929                 if (type === 'contextmenu') {
1930                         L.DomEvent.preventDefault(e);
1931                 }
1932
1933                 var containerPoint = this.mouseEventToContainerPoint(e),
1934                     layerPoint = this.containerPointToLayerPoint(containerPoint),
1935                     latlng = this.layerPointToLatLng(layerPoint);
1936
1937                 this.fire(type, {
1938                         latlng: latlng,
1939                         layerPoint: layerPoint,
1940                         containerPoint: containerPoint,
1941                         originalEvent: e
1942                 });
1943         },
1944
1945         _onTileLayerLoad: function () {
1946                 // TODO super-ugly, refactor!!!
1947                 // clear scaled tiles after all new tiles are loaded (for performance)
1948                 this._tileLayersToLoad--;
1949                 if (this._tileLayersNum && !this._tileLayersToLoad && this._tileBg) {
1950                         clearTimeout(this._clearTileBgTimer);
1951                         this._clearTileBgTimer = setTimeout(L.bind(this._clearTileBg, this), 500);
1952                 }
1953         },
1954
1955         whenReady: function (callback, context) {
1956                 if (this._loaded) {
1957                         callback.call(context || this, this);
1958                 } else {
1959                         this.on('load', callback, context);
1960                 }
1961                 return this;
1962         },
1963
1964
1965         // private methods for getting map state
1966
1967         _getMapPanePos: function () {
1968                 return L.DomUtil.getPosition(this._mapPane);
1969         },
1970
1971         _getTopLeftPoint: function () {
1972                 if (!this._loaded) {
1973                         throw new Error('Set map center and zoom first.');
1974                 }
1975
1976                 return this._initialTopLeftPoint.subtract(this._getMapPanePos());
1977         },
1978
1979         _getNewTopLeftPoint: function (center, zoom) {
1980                 var viewHalf = this.getSize()._divideBy(2);
1981                 // TODO round on display, not calculation to increase precision?
1982                 return this.project(center, zoom)._subtract(viewHalf)._round();
1983         },
1984
1985         _latLngToNewLayerPoint: function (latlng, newZoom, newCenter) {
1986                 var topLeft = this._getNewTopLeftPoint(newCenter, newZoom).add(this._getMapPanePos());
1987                 return this.project(latlng, newZoom)._subtract(topLeft);
1988         },
1989
1990         _getCenterLayerPoint: function () {
1991                 return this.containerPointToLayerPoint(this.getSize()._divideBy(2));
1992         },
1993
1994         _getCenterOffset: function (center) {
1995                 return this.latLngToLayerPoint(center).subtract(this._getCenterLayerPoint());
1996         },
1997
1998         _limitZoom: function (zoom) {
1999                 var min = this.getMinZoom(),
2000                     max = this.getMaxZoom();
2001
2002                 return Math.max(min, Math.min(max, zoom));
2003         }
2004 });
2005
2006 L.map = function (id, options) {
2007         return new L.Map(id, options);
2008 };
2009
2010
2011 /*
2012  * Mercator projection that takes into account that the Earth is not a perfect sphere.
2013  * Less popular than spherical mercator; used by projections like EPSG:3395.
2014  */
2015
2016 L.Projection.Mercator = {
2017         MAX_LATITUDE: 85.0840591556,
2018
2019         R_MINOR: 6356752.3142,
2020         R_MAJOR: 6378137,
2021
2022         project: function (latlng) { // (LatLng) -> Point
2023                 var d = L.LatLng.DEG_TO_RAD,
2024                     max = this.MAX_LATITUDE,
2025                     lat = Math.max(Math.min(max, latlng.lat), -max),
2026                     r = this.R_MAJOR,
2027                     r2 = this.R_MINOR,
2028                     x = latlng.lng * d * r,
2029                     y = lat * d,
2030                     tmp = r2 / r,
2031                     eccent = Math.sqrt(1.0 - tmp * tmp),
2032                     con = eccent * Math.sin(y);
2033
2034                 con = Math.pow((1 - con) / (1 + con), eccent * 0.5);
2035
2036                 var ts = Math.tan(0.5 * ((Math.PI * 0.5) - y)) / con;
2037                 y = -r2 * Math.log(ts);
2038
2039                 return new L.Point(x, y);
2040         },
2041
2042         unproject: function (point) { // (Point, Boolean) -> LatLng
2043                 var d = L.LatLng.RAD_TO_DEG,
2044                     r = this.R_MAJOR,
2045                     r2 = this.R_MINOR,
2046                     lng = point.x * d / r,
2047                     tmp = r2 / r,
2048                     eccent = Math.sqrt(1 - (tmp * tmp)),
2049                     ts = Math.exp(- point.y / r2),
2050                     phi = (Math.PI / 2) - 2 * Math.atan(ts),
2051                     numIter = 15,
2052                     tol = 1e-7,
2053                     i = numIter,
2054                     dphi = 0.1,
2055                     con;
2056
2057                 while ((Math.abs(dphi) > tol) && (--i > 0)) {
2058                         con = eccent * Math.sin(phi);
2059                         dphi = (Math.PI / 2) - 2 * Math.atan(ts *
2060                                     Math.pow((1.0 - con) / (1.0 + con), 0.5 * eccent)) - phi;
2061                         phi += dphi;
2062                 }
2063
2064                 return new L.LatLng(phi * d, lng);
2065         }
2066 };
2067
2068
2069
2070 L.CRS.EPSG3395 = L.extend({}, L.CRS, {
2071         code: 'EPSG:3395',
2072
2073         projection: L.Projection.Mercator,
2074
2075         transformation: (function () {
2076                 var m = L.Projection.Mercator,
2077                     r = m.R_MAJOR,
2078                     r2 = m.R_MINOR;
2079
2080                 return new L.Transformation(0.5 / (Math.PI * r), 0.5, -0.5 / (Math.PI * r2), 0.5);
2081         }())
2082 });
2083
2084
2085 /*
2086  * L.TileLayer is used for standard xyz-numbered tile layers.
2087  */
2088
2089 L.TileLayer = L.Class.extend({
2090         includes: L.Mixin.Events,
2091
2092         options: {
2093                 minZoom: 0,
2094                 maxZoom: 18,
2095                 tileSize: 256,
2096                 subdomains: 'abc',
2097                 errorTileUrl: '',
2098                 attribution: '',
2099                 zoomOffset: 0,
2100                 opacity: 1,
2101                 /* (undefined works too)
2102                 zIndex: null,
2103                 tms: false,
2104                 continuousWorld: false,
2105                 noWrap: false,
2106                 zoomReverse: false,
2107                 detectRetina: false,
2108                 reuseTiles: false,
2109                 */
2110                 unloadInvisibleTiles: L.Browser.mobile,
2111                 updateWhenIdle: L.Browser.mobile
2112         },
2113
2114         initialize: function (url, options) {
2115                 options = L.setOptions(this, options);
2116
2117                 // detecting retina displays, adjusting tileSize and zoom levels
2118                 if (options.detectRetina && L.Browser.retina && options.maxZoom > 0) {
2119
2120                         options.tileSize = Math.floor(options.tileSize / 2);
2121                         options.zoomOffset++;
2122
2123                         if (options.minZoom > 0) {
2124                                 options.minZoom--;
2125                         }
2126                         this.options.maxZoom--;
2127                 }
2128
2129                 this._url = url;
2130
2131                 var subdomains = this.options.subdomains;
2132
2133                 if (typeof subdomains === 'string') {
2134                         this.options.subdomains = subdomains.split('');
2135                 }
2136         },
2137
2138         onAdd: function (map) {
2139                 this._map = map;
2140
2141                 // create a container div for tiles
2142                 this._initContainer();
2143
2144                 // create an image to clone for tiles
2145                 this._createTileProto();
2146
2147                 // set up events
2148                 map.on({
2149                         'viewreset': this._resetCallback,
2150                         'moveend': this._update
2151                 }, this);
2152
2153                 if (!this.options.updateWhenIdle) {
2154                         this._limitedUpdate = L.Util.limitExecByInterval(this._update, 150, this);
2155                         map.on('move', this._limitedUpdate, this);
2156                 }
2157
2158                 this._reset();
2159                 this._update();
2160         },
2161
2162         addTo: function (map) {
2163                 map.addLayer(this);
2164                 return this;
2165         },
2166
2167         onRemove: function (map) {
2168                 this._container.parentNode.removeChild(this._container);
2169
2170                 map.off({
2171                         'viewreset': this._resetCallback,
2172                         'moveend': this._update
2173                 }, this);
2174
2175                 if (!this.options.updateWhenIdle) {
2176                         map.off('move', this._limitedUpdate, this);
2177                 }
2178
2179                 this._container = null;
2180                 this._map = null;
2181         },
2182
2183         bringToFront: function () {
2184                 var pane = this._map._panes.tilePane;
2185
2186                 if (this._container) {
2187                         pane.appendChild(this._container);
2188                         this._setAutoZIndex(pane, Math.max);
2189                 }
2190
2191                 return this;
2192         },
2193
2194         bringToBack: function () {
2195                 var pane = this._map._panes.tilePane;
2196
2197                 if (this._container) {
2198                         pane.insertBefore(this._container, pane.firstChild);
2199                         this._setAutoZIndex(pane, Math.min);
2200                 }
2201
2202                 return this;
2203         },
2204
2205         getAttribution: function () {
2206                 return this.options.attribution;
2207         },
2208
2209         setOpacity: function (opacity) {
2210                 this.options.opacity = opacity;
2211
2212                 if (this._map) {
2213                         this._updateOpacity();
2214                 }
2215
2216                 return this;
2217         },
2218
2219         setZIndex: function (zIndex) {
2220                 this.options.zIndex = zIndex;
2221                 this._updateZIndex();
2222
2223                 return this;
2224         },
2225
2226         setUrl: function (url, noRedraw) {
2227                 this._url = url;
2228
2229                 if (!noRedraw) {
2230                         this.redraw();
2231                 }
2232
2233                 return this;
2234         },
2235
2236         redraw: function () {
2237                 if (this._map) {
2238                         this._map._panes.tilePane.empty = false;
2239                         this._reset(true);
2240                         this._update();
2241                 }
2242                 return this;
2243         },
2244
2245         _updateZIndex: function () {
2246                 if (this._container && this.options.zIndex !== undefined) {
2247                         this._container.style.zIndex = this.options.zIndex;
2248                 }
2249         },
2250
2251         _setAutoZIndex: function (pane, compare) {
2252
2253                 var layers = pane.children,
2254                     edgeZIndex = -compare(Infinity, -Infinity), // -Infinity for max, Infinity for min
2255                     zIndex, i, len;
2256
2257                 for (i = 0, len = layers.length; i < len; i++) {
2258
2259                         if (layers[i] !== this._container) {
2260                                 zIndex = parseInt(layers[i].style.zIndex, 10);
2261
2262                                 if (!isNaN(zIndex)) {
2263                                         edgeZIndex = compare(edgeZIndex, zIndex);
2264                                 }
2265                         }
2266                 }
2267
2268                 this.options.zIndex = this._container.style.zIndex =
2269                         (isFinite(edgeZIndex) ? edgeZIndex : 0) + compare(1, -1);
2270         },
2271
2272         _updateOpacity: function () {
2273                 L.DomUtil.setOpacity(this._container, this.options.opacity);
2274
2275                 // stupid webkit hack to force redrawing of tiles
2276                 var i,
2277                     tiles = this._tiles;
2278
2279                 if (L.Browser.webkit) {
2280                         for (i in tiles) {
2281                                 if (tiles.hasOwnProperty(i)) {
2282                                         tiles[i].style.webkitTransform += ' translate(0,0)';
2283                                 }
2284                         }
2285                 }
2286         },
2287
2288         _initContainer: function () {
2289                 var tilePane = this._map._panes.tilePane;
2290
2291                 if (!this._container || tilePane.empty) {
2292                         this._container = L.DomUtil.create('div', 'leaflet-layer');
2293
2294                         this._updateZIndex();
2295
2296                         tilePane.appendChild(this._container);
2297
2298                         if (this.options.opacity < 1) {
2299                                 this._updateOpacity();
2300                         }
2301                 }
2302         },
2303
2304         _resetCallback: function (e) {
2305                 this._reset(e.hard);
2306         },
2307
2308         _reset: function (clearOldContainer) {
2309                 var tiles = this._tiles;
2310
2311                 for (var key in tiles) {
2312                         if (tiles.hasOwnProperty(key)) {
2313                                 this.fire('tileunload', {tile: tiles[key]});
2314                         }
2315                 }
2316
2317                 this._tiles = {};
2318                 this._tilesToLoad = 0;
2319
2320                 if (this.options.reuseTiles) {
2321                         this._unusedTiles = [];
2322                 }
2323
2324                 if (clearOldContainer && this._container) {
2325                         this._container.innerHTML = "";
2326                 }
2327
2328                 this._initContainer();
2329         },
2330
2331         _update: function () {
2332
2333                 if (!this._map) { return; }
2334
2335                 var bounds = this._map.getPixelBounds(),
2336                     zoom = this._map.getZoom(),
2337                     tileSize = this.options.tileSize;
2338
2339                 if (zoom > this.options.maxZoom || zoom < this.options.minZoom) {
2340                         return;
2341                 }
2342
2343                 var nwTilePoint = new L.Point(
2344                         Math.floor(bounds.min.x / tileSize),
2345                         Math.floor(bounds.min.y / tileSize)),
2346
2347                     seTilePoint = new L.Point(
2348                         Math.floor(bounds.max.x / tileSize),
2349                         Math.floor(bounds.max.y / tileSize)),
2350
2351                     tileBounds = new L.Bounds(nwTilePoint, seTilePoint);
2352
2353                 this._addTilesFromCenterOut(tileBounds);
2354
2355                 if (this.options.unloadInvisibleTiles || this.options.reuseTiles) {
2356                         this._removeOtherTiles(tileBounds);
2357                 }
2358         },
2359
2360         _addTilesFromCenterOut: function (bounds) {
2361                 var queue = [],
2362                     center = bounds.getCenter();
2363
2364                 var j, i, point;
2365
2366                 for (j = bounds.min.y; j <= bounds.max.y; j++) {
2367                         for (i = bounds.min.x; i <= bounds.max.x; i++) {
2368                                 point = new L.Point(i, j);
2369
2370                                 if (this._tileShouldBeLoaded(point)) {
2371                                         queue.push(point);
2372                                 }
2373                         }
2374                 }
2375
2376                 var tilesToLoad = queue.length;
2377
2378                 if (tilesToLoad === 0) { return; }
2379
2380                 // load tiles in order of their distance to center
2381                 queue.sort(function (a, b) {
2382                         return a.distanceTo(center) - b.distanceTo(center);
2383                 });
2384
2385                 var fragment = document.createDocumentFragment();
2386
2387                 // if its the first batch of tiles to load
2388                 if (!this._tilesToLoad) {
2389                         this.fire('loading');
2390                 }
2391
2392                 this._tilesToLoad += tilesToLoad;
2393
2394                 for (i = 0; i < tilesToLoad; i++) {
2395                         this._addTile(queue[i], fragment);
2396                 }
2397
2398                 this._container.appendChild(fragment);
2399         },
2400
2401         _tileShouldBeLoaded: function (tilePoint) {
2402                 if ((tilePoint.x + ':' + tilePoint.y) in this._tiles) {
2403                         return false; // already loaded
2404                 }
2405
2406                 if (!this.options.continuousWorld) {
2407                         var limit = this._getWrapTileNum();
2408
2409                         if (this.options.noWrap && (tilePoint.x < 0 || tilePoint.x >= limit) ||
2410                                                         tilePoint.y < 0 || tilePoint.y >= limit) {
2411                                 return false; // exceeds world bounds
2412                         }
2413                 }
2414
2415                 return true;
2416         },
2417
2418         _removeOtherTiles: function (bounds) {
2419                 var kArr, x, y, key;
2420
2421                 for (key in this._tiles) {
2422                         if (this._tiles.hasOwnProperty(key)) {
2423                                 kArr = key.split(':');
2424                                 x = parseInt(kArr[0], 10);
2425                                 y = parseInt(kArr[1], 10);
2426
2427                                 // remove tile if it's out of bounds
2428                                 if (x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) {
2429                                         this._removeTile(key);
2430                                 }
2431                         }
2432                 }
2433         },
2434
2435         _removeTile: function (key) {
2436                 var tile = this._tiles[key];
2437
2438                 this.fire("tileunload", {tile: tile, url: tile.src});
2439
2440                 if (this.options.reuseTiles) {
2441                         L.DomUtil.removeClass(tile, 'leaflet-tile-loaded');
2442                         this._unusedTiles.push(tile);
2443
2444                 } else if (tile.parentNode === this._container) {
2445                         this._container.removeChild(tile);
2446                 }
2447
2448                 // for https://github.com/CloudMade/Leaflet/issues/137
2449                 if (!L.Browser.android) {
2450                         tile.src = L.Util.emptyImageUrl;
2451                 }
2452
2453                 delete this._tiles[key];
2454         },
2455
2456         _addTile: function (tilePoint, container) {
2457                 var tilePos = this._getTilePos(tilePoint);
2458
2459                 // get unused tile - or create a new tile
2460                 var tile = this._getTile();
2461
2462                 /*
2463                 Chrome 20 layouts much faster with top/left (verify with timeline, frames)
2464                 Android 4 browser has display issues with top/left and requires transform instead
2465                 Android 3 browser not tested
2466                 Android 2 browser requires top/left or tiles disappear on load or first drag
2467                 (reappear after zoom) https://github.com/CloudMade/Leaflet/issues/866
2468                 (other browsers don't currently care) - see debug/hacks/jitter.html for an example
2469                 */
2470                 L.DomUtil.setPosition(tile, tilePos, L.Browser.chrome || L.Browser.android23);
2471
2472                 this._tiles[tilePoint.x + ':' + tilePoint.y] = tile;
2473
2474                 this._loadTile(tile, tilePoint);
2475
2476                 if (tile.parentNode !== this._container) {
2477                         container.appendChild(tile);
2478                 }
2479         },
2480
2481         _getZoomForUrl: function () {
2482
2483                 var options = this.options,
2484                     zoom = this._map.getZoom();
2485
2486                 if (options.zoomReverse) {
2487                         zoom = options.maxZoom - zoom;
2488                 }
2489
2490                 return zoom + options.zoomOffset;
2491         },
2492
2493         _getTilePos: function (tilePoint) {
2494                 var origin = this._map.getPixelOrigin(),
2495                     tileSize = this.options.tileSize;
2496
2497                 return tilePoint.multiplyBy(tileSize).subtract(origin);
2498         },
2499
2500         // image-specific code (override to implement e.g. Canvas or SVG tile layer)
2501
2502         getTileUrl: function (tilePoint) {
2503                 this._adjustTilePoint(tilePoint);
2504
2505                 return L.Util.template(this._url, L.extend({
2506                         s: this._getSubdomain(tilePoint),
2507                         z: this._getZoomForUrl(),
2508                         x: tilePoint.x,
2509                         y: tilePoint.y
2510                 }, this.options));
2511         },
2512
2513         _getWrapTileNum: function () {
2514                 // TODO refactor, limit is not valid for non-standard projections
2515                 return Math.pow(2, this._getZoomForUrl());
2516         },
2517
2518         _adjustTilePoint: function (tilePoint) {
2519
2520                 var limit = this._getWrapTileNum();
2521
2522                 // wrap tile coordinates
2523                 if (!this.options.continuousWorld && !this.options.noWrap) {
2524                         tilePoint.x = ((tilePoint.x % limit) + limit) % limit;
2525                 }
2526
2527                 if (this.options.tms) {
2528                         tilePoint.y = limit - tilePoint.y - 1;
2529                 }
2530         },
2531
2532         _getSubdomain: function (tilePoint) {
2533                 var index = (tilePoint.x + tilePoint.y) % this.options.subdomains.length;
2534                 return this.options.subdomains[index];
2535         },
2536
2537         _createTileProto: function () {
2538                 var img = this._tileImg = L.DomUtil.create('img', 'leaflet-tile');
2539                 img.style.width = img.style.height = this.options.tileSize + 'px';
2540                 img.galleryimg = 'no';
2541         },
2542
2543         _getTile: function () {
2544                 if (this.options.reuseTiles && this._unusedTiles.length > 0) {
2545                         var tile = this._unusedTiles.pop();
2546                         this._resetTile(tile);
2547                         return tile;
2548                 }
2549                 return this._createTile();
2550         },
2551
2552         // Override if data stored on a tile needs to be cleaned up before reuse
2553         _resetTile: function (/*tile*/) {},
2554
2555         _createTile: function () {
2556                 var tile = this._tileImg.cloneNode(false);
2557                 tile.onselectstart = tile.onmousemove = L.Util.falseFn;
2558                 return tile;
2559         },
2560
2561         _loadTile: function (tile, tilePoint) {
2562                 tile._layer  = this;
2563                 tile.onload  = this._tileOnLoad;
2564                 tile.onerror = this._tileOnError;
2565
2566                 tile.src     = this.getTileUrl(tilePoint);
2567         },
2568
2569     _tileLoaded: function () {
2570         this._tilesToLoad--;
2571         if (!this._tilesToLoad) {
2572             this.fire('load');
2573         }
2574     },
2575
2576         _tileOnLoad: function () {
2577                 var layer = this._layer;
2578
2579                 //Only if we are loading an actual image
2580                 if (this.src !== L.Util.emptyImageUrl) {
2581                         L.DomUtil.addClass(this, 'leaflet-tile-loaded');
2582
2583                         layer.fire('tileload', {
2584                                 tile: this,
2585                                 url: this.src
2586                         });
2587                 }
2588
2589                 layer._tileLoaded();
2590         },
2591
2592         _tileOnError: function () {
2593                 var layer = this._layer;
2594
2595                 layer.fire('tileerror', {
2596                         tile: this,
2597                         url: this.src
2598                 });
2599
2600                 var newUrl = layer.options.errorTileUrl;
2601                 if (newUrl) {
2602                         this.src = newUrl;
2603                 }
2604
2605         layer._tileLoaded();
2606     }
2607 });
2608
2609 L.tileLayer = function (url, options) {
2610         return new L.TileLayer(url, options);
2611 };
2612
2613
2614 /*
2615  * L.TileLayer.WMS is used for putting WMS tile layers on the map.
2616  */
2617
2618 L.TileLayer.WMS = L.TileLayer.extend({
2619
2620         defaultWmsParams: {
2621                 service: 'WMS',
2622                 request: 'GetMap',
2623                 version: '1.1.1',
2624                 layers: '',
2625                 styles: '',
2626                 format: 'image/jpeg',
2627                 transparent: false
2628         },
2629
2630         initialize: function (url, options) { // (String, Object)
2631
2632                 this._url = url;
2633
2634                 var wmsParams = L.extend({}, this.defaultWmsParams);
2635
2636                 if (options.detectRetina && L.Browser.retina) {
2637                         wmsParams.width = wmsParams.height = this.options.tileSize * 2;
2638                 } else {
2639                         wmsParams.width = wmsParams.height = this.options.tileSize;
2640                 }
2641
2642                 for (var i in options) {
2643                         // all keys that are not TileLayer options go to WMS params
2644                         if (!this.options.hasOwnProperty(i)) {
2645                                 wmsParams[i] = options[i];
2646                         }
2647                 }
2648
2649                 this.wmsParams = wmsParams;
2650
2651                 L.setOptions(this, options);
2652         },
2653
2654         onAdd: function (map) {
2655
2656                 var projectionKey = parseFloat(this.wmsParams.version) >= 1.3 ? 'crs' : 'srs';
2657                 this.wmsParams[projectionKey] = map.options.crs.code;
2658
2659                 L.TileLayer.prototype.onAdd.call(this, map);
2660         },
2661
2662         getTileUrl: function (tilePoint, zoom) { // (Point, Number) -> String
2663
2664                 this._adjustTilePoint(tilePoint);
2665
2666                 var map = this._map,
2667                     crs = map.options.crs,
2668                     tileSize = this.options.tileSize,
2669
2670                     nwPoint = tilePoint.multiplyBy(tileSize),
2671                     sePoint = nwPoint.add(new L.Point(tileSize, tileSize)),
2672
2673                     nw = crs.project(map.unproject(nwPoint, zoom)),
2674                     se = crs.project(map.unproject(sePoint, zoom)),
2675
2676                     bbox = [nw.x, se.y, se.x, nw.y].join(','),
2677
2678                     url = L.Util.template(this._url, {s: this._getSubdomain(tilePoint)});
2679
2680                 return url + L.Util.getParamString(this.wmsParams, url) + "&bbox=" + bbox;
2681         },
2682
2683         setParams: function (params, noRedraw) {
2684
2685                 L.extend(this.wmsParams, params);
2686
2687                 if (!noRedraw) {
2688                         this.redraw();
2689                 }
2690
2691                 return this;
2692         }
2693 });
2694
2695 L.tileLayer.wms = function (url, options) {
2696         return new L.TileLayer.WMS(url, options);
2697 };
2698
2699
2700 /*
2701  * L.TileLayer.Canvas is a class that you can use as a base for creating
2702  * dynamically drawn Canvas-based tile layers.
2703  */
2704
2705 L.TileLayer.Canvas = L.TileLayer.extend({
2706         options: {
2707                 async: false
2708         },
2709
2710         initialize: function (options) {
2711                 L.setOptions(this, options);
2712         },
2713
2714         redraw: function () {
2715                 var tiles = this._tiles;
2716
2717                 for (var i in tiles) {
2718                         if (tiles.hasOwnProperty(i)) {
2719                                 this._redrawTile(tiles[i]);
2720                         }
2721                 }
2722         },
2723
2724         _redrawTile: function (tile) {
2725                 this.drawTile(tile, tile._tilePoint, this._map._zoom);
2726         },
2727
2728         _createTileProto: function () {
2729                 var proto = this._canvasProto = L.DomUtil.create('canvas', 'leaflet-tile');
2730                 proto.width = proto.height = this.options.tileSize;
2731         },
2732
2733         _createTile: function () {
2734                 var tile = this._canvasProto.cloneNode(false);
2735                 tile.onselectstart = tile.onmousemove = L.Util.falseFn;
2736                 return tile;
2737         },
2738
2739         _loadTile: function (tile, tilePoint) {
2740                 tile._layer = this;
2741                 tile._tilePoint = tilePoint;
2742
2743                 this._redrawTile(tile);
2744
2745                 if (!this.options.async) {
2746                         this.tileDrawn(tile);
2747                 }
2748         },
2749
2750         drawTile: function (/*tile, tilePoint*/) {
2751                 // override with rendering code
2752         },
2753
2754         tileDrawn: function (tile) {
2755                 this._tileOnLoad.call(tile);
2756         }
2757 });
2758
2759
2760 L.tileLayer.canvas = function (options) {
2761         return new L.TileLayer.Canvas(options);
2762 };
2763
2764
2765 /*
2766  * L.ImageOverlay is used to overlay images over the map (to specific geographical bounds).
2767  */
2768
2769 L.ImageOverlay = L.Class.extend({
2770         includes: L.Mixin.Events,
2771
2772         options: {
2773                 opacity: 1
2774         },
2775
2776         initialize: function (url, bounds, options) { // (String, LatLngBounds, Object)
2777                 this._url = url;
2778                 this._bounds = L.latLngBounds(bounds);
2779
2780                 L.setOptions(this, options);
2781         },
2782
2783         onAdd: function (map) {
2784                 this._map = map;
2785
2786                 if (!this._image) {
2787                         this._initImage();
2788                 }
2789
2790                 map._panes.overlayPane.appendChild(this._image);
2791
2792                 map.on('viewreset', this._reset, this);
2793
2794                 if (map.options.zoomAnimation && L.Browser.any3d) {
2795                         map.on('zoomanim', this._animateZoom, this);
2796                 }
2797
2798                 this._reset();
2799         },
2800
2801         onRemove: function (map) {
2802                 map.getPanes().overlayPane.removeChild(this._image);
2803
2804                 map.off('viewreset', this._reset, this);
2805
2806                 if (map.options.zoomAnimation) {
2807                         map.off('zoomanim', this._animateZoom, this);
2808                 }
2809         },
2810
2811         addTo: function (map) {
2812                 map.addLayer(this);
2813                 return this;
2814         },
2815
2816         setOpacity: function (opacity) {
2817                 this.options.opacity = opacity;
2818                 this._updateOpacity();
2819                 return this;
2820         },
2821
2822         // TODO remove bringToFront/bringToBack duplication from TileLayer/Path
2823         bringToFront: function () {
2824                 if (this._image) {
2825                         this._map._panes.overlayPane.appendChild(this._image);
2826                 }
2827                 return this;
2828         },
2829
2830         bringToBack: function () {
2831                 var pane = this._map._panes.overlayPane;
2832                 if (this._image) {
2833                         pane.insertBefore(this._image, pane.firstChild);
2834                 }
2835                 return this;
2836         },
2837
2838         _initImage: function () {
2839                 this._image = L.DomUtil.create('img', 'leaflet-image-layer');
2840
2841                 if (this._map.options.zoomAnimation && L.Browser.any3d) {
2842                         L.DomUtil.addClass(this._image, 'leaflet-zoom-animated');
2843                 } else {
2844                         L.DomUtil.addClass(this._image, 'leaflet-zoom-hide');
2845                 }
2846
2847                 this._updateOpacity();
2848
2849                 //TODO createImage util method to remove duplication
2850                 L.extend(this._image, {
2851                         galleryimg: 'no',
2852                         onselectstart: L.Util.falseFn,
2853                         onmousemove: L.Util.falseFn,
2854                         onload: L.bind(this._onImageLoad, this),
2855                         src: this._url
2856                 });
2857         },
2858
2859         _animateZoom: function (e) {
2860                 var map = this._map,
2861                     image = this._image,
2862                     scale = map.getZoomScale(e.zoom),
2863                     nw = this._bounds.getNorthWest(),
2864                     se = this._bounds.getSouthEast(),
2865
2866                     topLeft = map._latLngToNewLayerPoint(nw, e.zoom, e.center),
2867                     size = map._latLngToNewLayerPoint(se, e.zoom, e.center)._subtract(topLeft),
2868                     origin = topLeft._add(size._multiplyBy((1 / 2) * (1 - 1 / scale)));
2869
2870                 image.style[L.DomUtil.TRANSFORM] =
2871                         L.DomUtil.getTranslateString(origin) + ' scale(' + scale + ') ';
2872         },
2873
2874         _reset: function () {
2875                 var image   = this._image,
2876                     topLeft = this._map.latLngToLayerPoint(this._bounds.getNorthWest()),
2877                     size = this._map.latLngToLayerPoint(this._bounds.getSouthEast())._subtract(topLeft);
2878
2879                 L.DomUtil.setPosition(image, topLeft);
2880
2881                 image.style.width  = size.x + 'px';
2882                 image.style.height = size.y + 'px';
2883         },
2884
2885         _onImageLoad: function () {
2886                 this.fire('load');
2887         },
2888
2889         _updateOpacity: function () {
2890                 L.DomUtil.setOpacity(this._image, this.options.opacity);
2891         }
2892 });
2893
2894 L.imageOverlay = function (url, bounds, options) {
2895         return new L.ImageOverlay(url, bounds, options);
2896 };
2897
2898
2899 /*
2900  * L.Icon is an image-based icon class that you can use with L.Marker for custom markers.
2901  */
2902
2903 L.Icon = L.Class.extend({
2904         options: {
2905                 /*
2906                 iconUrl: (String) (required)
2907                 iconRetinaUrl: (String) (optional, used for retina devices if detected)
2908                 iconSize: (Point) (can be set through CSS)
2909                 iconAnchor: (Point) (centered by default, can be set in CSS with negative margins)
2910                 popupAnchor: (Point) (if not specified, popup opens in the anchor point)
2911                 shadowUrl: (Point) (no shadow by default)
2912                 shadowRetinaUrl: (String) (optional, used for retina devices if detected)
2913                 shadowSize: (Point)
2914                 shadowAnchor: (Point)
2915                 */
2916                 className: ''
2917         },
2918
2919         initialize: function (options) {
2920                 L.setOptions(this, options);
2921         },
2922
2923         createIcon: function () {
2924                 return this._createIcon('icon');
2925         },
2926
2927         createShadow: function () {
2928                 return this._createIcon('shadow');
2929         },
2930
2931         _createIcon: function (name) {
2932                 var src = this._getIconUrl(name);
2933
2934                 if (!src) {
2935                         if (name === 'icon') {
2936                                 throw new Error("iconUrl not set in Icon options (see the docs).");
2937                         }
2938                         return null;
2939                 }
2940
2941                 var img = this._createImg(src);
2942                 this._setIconStyles(img, name);
2943
2944                 return img;
2945         },
2946
2947         _setIconStyles: function (img, name) {
2948                 var options = this.options,
2949                     size = L.point(options[name + 'Size']),
2950                     anchor;
2951
2952                 if (name === 'shadow') {
2953                         anchor = L.point(options.shadowAnchor || options.iconAnchor);
2954                 } else {
2955                         anchor = L.point(options.iconAnchor);
2956                 }
2957
2958                 if (!anchor && size) {
2959                         anchor = size.divideBy(2, true);
2960                 }
2961
2962                 img.className = 'leaflet-marker-' + name + ' ' + options.className;
2963
2964                 if (anchor) {
2965                         img.style.marginLeft = (-anchor.x) + 'px';
2966                         img.style.marginTop  = (-anchor.y) + 'px';
2967                 }
2968
2969                 if (size) {
2970                         img.style.width  = size.x + 'px';
2971                         img.style.height = size.y + 'px';
2972                 }
2973         },
2974
2975         _createImg: function (src) {
2976                 var el;
2977
2978                 if (!L.Browser.ie6) {
2979                         el = document.createElement('img');
2980                         el.src = src;
2981                 } else {
2982                         el = document.createElement('div');
2983                         el.style.filter =
2984                                 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="' + src + '")';
2985                 }
2986                 return el;
2987         },
2988
2989         _getIconUrl: function (name) {
2990                 if (L.Browser.retina && this.options[name + 'RetinaUrl']) {
2991                         return this.options[name + 'RetinaUrl'];
2992                 }
2993                 return this.options[name + 'Url'];
2994         }
2995 });
2996
2997 L.icon = function (options) {
2998         return new L.Icon(options);
2999 };
3000
3001
3002 /*
3003  * L.Icon.Default is the blue marker icon used by default in Leaflet.
3004  */
3005
3006 L.Icon.Default = L.Icon.extend({
3007
3008         options: {
3009                 iconSize: new L.Point(25, 41),
3010                 iconAnchor: new L.Point(12, 41),
3011                 popupAnchor: new L.Point(1, -34),
3012
3013                 shadowSize: new L.Point(41, 41)
3014         },
3015
3016         _getIconUrl: function (name) {
3017                 var key = name + 'Url';
3018
3019                 if (this.options[key]) {
3020                         return this.options[key];
3021                 }
3022
3023                 if (L.Browser.retina && name === 'icon') {
3024                         name += '@2x';
3025                 }
3026
3027                 var path = L.Icon.Default.imagePath;
3028
3029                 if (!path) {
3030                         throw new Error("Couldn't autodetect L.Icon.Default.imagePath, set it manually.");
3031                 }
3032
3033                 return path + '/marker-' + name + '.png';
3034         }
3035 });
3036
3037 L.Icon.Default.imagePath = (function () {
3038         var scripts = document.getElementsByTagName('script'),
3039             leafletRe = /\/?leaflet[\-\._]?([\w\-\._]*)\.js\??/;
3040
3041         var i, len, src, matches;
3042
3043         for (i = 0, len = scripts.length; i < len; i++) {
3044                 src = scripts[i].src;
3045                 matches = src.match(leafletRe);
3046
3047                 if (matches) {
3048                         return src.split(leafletRe)[0] + '/images';
3049                 }
3050         }
3051 }());
3052
3053
3054 /*
3055  * L.Marker is used to display clickable/draggable icons on the map.
3056  */
3057
3058 L.Marker = L.Class.extend({
3059
3060         includes: L.Mixin.Events,
3061
3062         options: {
3063                 icon: new L.Icon.Default(),
3064                 title: '',
3065                 clickable: true,
3066                 draggable: false,
3067                 zIndexOffset: 0,
3068                 opacity: 1,
3069                 riseOnHover: false,
3070                 riseOffset: 250
3071         },
3072
3073         initialize: function (latlng, options) {
3074                 L.setOptions(this, options);
3075                 this._latlng = L.latLng(latlng);
3076         },
3077
3078         onAdd: function (map) {
3079                 this._map = map;
3080
3081                 map.on('viewreset', this.update, this);
3082
3083                 this._initIcon();
3084                 this.update();
3085
3086                 if (map.options.zoomAnimation && map.options.markerZoomAnimation) {
3087                         map.on('zoomanim', this._animateZoom, this);
3088                 }
3089         },
3090
3091         addTo: function (map) {
3092                 map.addLayer(this);
3093                 return this;
3094         },
3095
3096         onRemove: function (map) {
3097                 this._removeIcon();
3098
3099                 this.fire('remove');
3100
3101                 map.off({
3102                         'viewreset': this.update,
3103                         'zoomanim': this._animateZoom
3104                 }, this);
3105
3106                 this._map = null;
3107         },
3108
3109         getLatLng: function () {
3110                 return this._latlng;
3111         },
3112
3113         setLatLng: function (latlng) {
3114                 this._latlng = L.latLng(latlng);
3115
3116                 this.update();
3117
3118                 return this.fire('move', { latlng: this._latlng });
3119         },
3120
3121         setZIndexOffset: function (offset) {
3122                 this.options.zIndexOffset = offset;
3123                 this.update();
3124
3125                 return this;
3126         },
3127
3128         setIcon: function (icon) {
3129                 if (this._map) {
3130                         this._removeIcon();
3131                 }
3132
3133                 this.options.icon = icon;
3134
3135                 if (this._map) {
3136                         this._initIcon();
3137                         this.update();
3138                 }
3139
3140                 return this;
3141         },
3142
3143         update: function () {
3144                 if (this._icon) {
3145                         var pos = this._map.latLngToLayerPoint(this._latlng).round();
3146                         this._setPos(pos);
3147                 }
3148
3149                 return this;
3150         },
3151
3152         _initIcon: function () {
3153                 var options = this.options,
3154                     map = this._map,
3155                     animation = (map.options.zoomAnimation && map.options.markerZoomAnimation),
3156                     classToAdd = animation ? 'leaflet-zoom-animated' : 'leaflet-zoom-hide',
3157                     needOpacityUpdate = false;
3158
3159                 if (!this._icon) {
3160                         this._icon = options.icon.createIcon();
3161
3162                         if (options.title) {
3163                                 this._icon.title = options.title;
3164                         }
3165
3166                         this._initInteraction();
3167                         needOpacityUpdate = (this.options.opacity < 1);
3168
3169                         L.DomUtil.addClass(this._icon, classToAdd);
3170
3171                         if (options.riseOnHover) {
3172                                 L.DomEvent
3173                                         .on(this._icon, 'mouseover', this._bringToFront, this)
3174                                         .on(this._icon, 'mouseout', this._resetZIndex, this);
3175                         }
3176                 }
3177
3178                 if (!this._shadow) {
3179                         this._shadow = options.icon.createShadow();
3180
3181                         if (this._shadow) {
3182                                 L.DomUtil.addClass(this._shadow, classToAdd);
3183                                 needOpacityUpdate = (this.options.opacity < 1);
3184                         }
3185                 }
3186
3187                 if (needOpacityUpdate) {
3188                         this._updateOpacity();
3189                 }
3190
3191                 var panes = this._map._panes;
3192
3193                 panes.markerPane.appendChild(this._icon);
3194
3195                 if (this._shadow) {
3196                         panes.shadowPane.appendChild(this._shadow);
3197                 }
3198         },
3199
3200         _removeIcon: function () {
3201                 var panes = this._map._panes;
3202
3203                 if (this.options.riseOnHover) {
3204                         L.DomEvent
3205                             .off(this._icon, 'mouseover', this._bringToFront)
3206                             .off(this._icon, 'mouseout', this._resetZIndex);
3207                 }
3208
3209                 panes.markerPane.removeChild(this._icon);
3210
3211                 if (this._shadow) {
3212                         panes.shadowPane.removeChild(this._shadow);
3213                 }
3214
3215                 this._icon = this._shadow = null;
3216         },
3217
3218         _setPos: function (pos) {
3219                 L.DomUtil.setPosition(this._icon, pos);
3220
3221                 if (this._shadow) {
3222                         L.DomUtil.setPosition(this._shadow, pos);
3223                 }
3224
3225                 this._zIndex = pos.y + this.options.zIndexOffset;
3226
3227                 this._resetZIndex();
3228         },
3229
3230         _updateZIndex: function (offset) {
3231                 this._icon.style.zIndex = this._zIndex + offset;
3232         },
3233
3234         _animateZoom: function (opt) {
3235                 var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center);
3236
3237                 this._setPos(pos);
3238         },
3239
3240         _initInteraction: function () {
3241
3242                 if (!this.options.clickable) { return; }
3243
3244                 // TODO refactor into something shared with Map/Path/etc. to DRY it up
3245
3246                 var icon = this._icon,
3247                     events = ['dblclick', 'mousedown', 'mouseover', 'mouseout', 'contextmenu'];
3248
3249                 L.DomUtil.addClass(icon, 'leaflet-clickable');
3250                 L.DomEvent.on(icon, 'click', this._onMouseClick, this);
3251
3252                 for (var i = 0; i < events.length; i++) {
3253                         L.DomEvent.on(icon, events[i], this._fireMouseEvent, this);
3254                 }
3255
3256                 if (L.Handler.MarkerDrag) {
3257                         this.dragging = new L.Handler.MarkerDrag(this);
3258
3259                         if (this.options.draggable) {
3260                                 this.dragging.enable();
3261                         }
3262                 }
3263         },
3264
3265         _onMouseClick: function (e) {
3266                 var wasDragged = this.dragging && this.dragging.moved();
3267
3268                 if (this.hasEventListeners(e.type) || wasDragged) {
3269                         L.DomEvent.stopPropagation(e);
3270                 }
3271
3272                 if (wasDragged) { return; }
3273
3274                 if ((!this.dragging || !this.dragging._enabled) && this._map.dragging && this._map.dragging.moved()) { return; }
3275
3276                 this.fire(e.type, {
3277                         originalEvent: e
3278                 });
3279         },
3280
3281         _fireMouseEvent: function (e) {
3282
3283                 this.fire(e.type, {
3284                         originalEvent: e
3285                 });
3286
3287                 // TODO proper custom event propagation
3288                 // this line will always be called if marker is in a FeatureGroup
3289                 if (e.type === 'contextmenu' && this.hasEventListeners(e.type)) {
3290                         L.DomEvent.preventDefault(e);
3291                 }
3292                 if (e.type !== 'mousedown') {
3293                         L.DomEvent.stopPropagation(e);
3294                 }
3295         },
3296
3297         setOpacity: function (opacity) {
3298                 this.options.opacity = opacity;
3299                 if (this._map) {
3300                         this._updateOpacity();
3301                 }
3302         },
3303
3304         _updateOpacity: function () {
3305                 L.DomUtil.setOpacity(this._icon, this.options.opacity);
3306                 if (this._shadow) {
3307                         L.DomUtil.setOpacity(this._shadow, this.options.opacity);
3308                 }
3309         },
3310
3311         _bringToFront: function () {
3312                 this._updateZIndex(this.options.riseOffset);
3313         },
3314
3315         _resetZIndex: function () {
3316                 this._updateZIndex(0);
3317         }
3318 });
3319
3320 L.marker = function (latlng, options) {
3321         return new L.Marker(latlng, options);
3322 };
3323
3324
3325 /*
3326  * L.DivIcon is a lightweight HTML-based icon class (as opposed to the image-based L.Icon)
3327  * to use with L.Marker.
3328  */
3329
3330 L.DivIcon = L.Icon.extend({
3331         options: {
3332                 iconSize: new L.Point(12, 12), // also can be set through CSS
3333                 /*
3334                 iconAnchor: (Point)
3335                 popupAnchor: (Point)
3336                 html: (String)
3337                 bgPos: (Point)
3338                 */
3339                 className: 'leaflet-div-icon'
3340         },
3341
3342         createIcon: function () {
3343                 var div = document.createElement('div'),
3344                     options = this.options;
3345
3346                 if (options.html) {
3347                         div.innerHTML = options.html;
3348                 }
3349
3350                 if (options.bgPos) {
3351                         div.style.backgroundPosition =
3352                                 (-options.bgPos.x) + 'px ' + (-options.bgPos.y) + 'px';
3353                 }
3354
3355                 this._setIconStyles(div, 'icon');
3356                 return div;
3357         },
3358
3359         createShadow: function () {
3360                 return null;
3361         }
3362 });
3363
3364 L.divIcon = function (options) {
3365         return new L.DivIcon(options);
3366 };
3367
3368
3369 /*
3370  * L.Popup is used for displaying popups on the map.
3371  */
3372
3373 L.Map.mergeOptions({
3374         closePopupOnClick: true
3375 });
3376
3377 L.Popup = L.Class.extend({
3378         includes: L.Mixin.Events,
3379
3380         options: {
3381                 minWidth: 50,
3382                 maxWidth: 300,
3383                 maxHeight: null,
3384                 autoPan: true,
3385                 closeButton: true,
3386                 offset: new L.Point(0, 6),
3387                 autoPanPadding: new L.Point(5, 5),
3388                 className: '',
3389                 zoomAnimation: true
3390         },
3391
3392         initialize: function (options, source) {
3393                 L.setOptions(this, options);
3394
3395                 this._source = source;
3396                 this._animated = L.Browser.any3d && this.options.zoomAnimation;
3397         },
3398
3399         onAdd: function (map) {
3400                 this._map = map;
3401
3402                 if (!this._container) {
3403                         this._initLayout();
3404                 }
3405                 this._updateContent();
3406
3407                 var animFade = map.options.fadeAnimation;
3408
3409                 if (animFade) {
3410                         L.DomUtil.setOpacity(this._container, 0);
3411                 }
3412                 map._panes.popupPane.appendChild(this._container);
3413
3414                 map.on('viewreset', this._updatePosition, this);
3415
3416                 if (this._animated) {
3417                         map.on('zoomanim', this._zoomAnimation, this);
3418                 }
3419
3420                 if (map.options.closePopupOnClick) {
3421                         map.on('preclick', this._close, this);
3422                 }
3423
3424                 this._update();
3425
3426                 if (animFade) {
3427                         L.DomUtil.setOpacity(this._container, 1);
3428                 }
3429         },
3430
3431         addTo: function (map) {
3432                 map.addLayer(this);
3433                 return this;
3434         },
3435
3436         openOn: function (map) {
3437                 map.openPopup(this);
3438                 return this;
3439         },
3440
3441         onRemove: function (map) {
3442                 map._panes.popupPane.removeChild(this._container);
3443
3444                 L.Util.falseFn(this._container.offsetWidth); // force reflow
3445
3446                 map.off({
3447                         viewreset: this._updatePosition,
3448                         preclick: this._close,
3449                         zoomanim: this._zoomAnimation
3450                 }, this);
3451
3452                 if (map.options.fadeAnimation) {
3453                         L.DomUtil.setOpacity(this._container, 0);
3454                 }
3455
3456                 this._map = null;
3457         },
3458
3459         setLatLng: function (latlng) {
3460                 this._latlng = L.latLng(latlng);
3461                 this._update();
3462                 return this;
3463         },
3464
3465         setContent: function (content) {
3466                 this._content = content;
3467                 this._update();
3468                 return this;
3469         },
3470
3471         _close: function () {
3472                 var map = this._map;
3473
3474                 if (map) {
3475                         map._popup = null;
3476
3477                         map
3478                             .removeLayer(this)
3479                             .fire('popupclose', {popup: this});
3480                 }
3481         },
3482
3483         _initLayout: function () {
3484                 var prefix = 'leaflet-popup',
3485                         containerClass = prefix + ' ' + this.options.className + ' leaflet-zoom-' +
3486                                 (this._animated ? 'animated' : 'hide'),
3487                         container = this._container = L.DomUtil.create('div', containerClass),
3488                         closeButton;
3489
3490                 if (this.options.closeButton) {
3491                         closeButton = this._closeButton =
3492                                 L.DomUtil.create('a', prefix + '-close-button', container);
3493                         closeButton.href = '#close';
3494                         closeButton.innerHTML = '&#215;';
3495
3496                         L.DomEvent.on(closeButton, 'click', this._onCloseButtonClick, this);
3497                 }
3498
3499                 var wrapper = this._wrapper =
3500                         L.DomUtil.create('div', prefix + '-content-wrapper', container);
3501                 L.DomEvent.disableClickPropagation(wrapper);
3502
3503                 this._contentNode = L.DomUtil.create('div', prefix + '-content', wrapper);
3504                 L.DomEvent.on(this._contentNode, 'mousewheel', L.DomEvent.stopPropagation);
3505
3506                 this._tipContainer = L.DomUtil.create('div', prefix + '-tip-container', container);
3507                 this._tip = L.DomUtil.create('div', prefix + '-tip', this._tipContainer);
3508         },
3509
3510         _update: function () {
3511                 if (!this._map) { return; }
3512
3513                 this._container.style.visibility = 'hidden';
3514
3515                 this._updateContent();
3516                 this._updateLayout();
3517                 this._updatePosition();
3518
3519                 this._container.style.visibility = '';
3520
3521                 this._adjustPan();
3522         },
3523
3524         _updateContent: function () {
3525                 if (!this._content) { return; }
3526
3527                 if (typeof this._content === 'string') {
3528                         this._contentNode.innerHTML = this._content;
3529                 } else {
3530                         while (this._contentNode.hasChildNodes()) {
3531                                 this._contentNode.removeChild(this._contentNode.firstChild);
3532                         }
3533                         this._contentNode.appendChild(this._content);
3534                 }
3535                 this.fire('contentupdate');
3536         },
3537
3538         _updateLayout: function () {
3539                 var container = this._contentNode,
3540                     style = container.style;
3541
3542                 style.width = '';
3543                 style.whiteSpace = 'nowrap';
3544
3545                 var width = container.offsetWidth;
3546                 width = Math.min(width, this.options.maxWidth);
3547                 width = Math.max(width, this.options.minWidth);
3548
3549                 style.width = (width + 1) + 'px';
3550                 style.whiteSpace = '';
3551
3552                 style.height = '';
3553
3554                 var height = container.offsetHeight,
3555                     maxHeight = this.options.maxHeight,
3556                     scrolledClass = 'leaflet-popup-scrolled';
3557
3558                 if (maxHeight && height > maxHeight) {
3559                         style.height = maxHeight + 'px';
3560                         L.DomUtil.addClass(container, scrolledClass);
3561                 } else {
3562                         L.DomUtil.removeClass(container, scrolledClass);
3563                 }
3564
3565                 this._containerWidth = this._container.offsetWidth;
3566         },
3567
3568         _updatePosition: function () {
3569                 if (!this._map) { return; }
3570
3571                 var pos = this._map.latLngToLayerPoint(this._latlng),
3572                     animated = this._animated,
3573                     offset = this.options.offset;
3574
3575                 if (animated) {
3576                         L.DomUtil.setPosition(this._container, pos);
3577                 }
3578
3579                 this._containerBottom = -offset.y - (animated ? 0 : pos.y);
3580                 this._containerLeft = -Math.round(this._containerWidth / 2) + offset.x + (animated ? 0 : pos.x);
3581
3582                 //Bottom position the popup in case the height of the popup changes (images loading etc)
3583                 this._container.style.bottom = this._containerBottom + 'px';
3584                 this._container.style.left = this._containerLeft + 'px';
3585         },
3586
3587         _zoomAnimation: function (opt) {
3588                 var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center);
3589
3590                 L.DomUtil.setPosition(this._container, pos);
3591         },
3592
3593         _adjustPan: function () {
3594                 if (!this.options.autoPan) { return; }
3595
3596                 var map = this._map,
3597                     containerHeight = this._container.offsetHeight,
3598                     containerWidth = this._containerWidth,
3599
3600                     layerPos = new L.Point(this._containerLeft, -containerHeight - this._containerBottom);
3601
3602                 if (this._animated) {
3603                         layerPos._add(L.DomUtil.getPosition(this._container));
3604                 }
3605
3606                 var containerPos = map.layerPointToContainerPoint(layerPos),
3607                     padding = this.options.autoPanPadding,
3608                     size = map.getSize(),
3609                     dx = 0,
3610                     dy = 0;
3611
3612                 if (containerPos.x < 0) {
3613                         dx = containerPos.x - padding.x;
3614                 }
3615                 if (containerPos.x + containerWidth > size.x) {
3616                         dx = containerPos.x + containerWidth - size.x + padding.x;
3617                 }
3618                 if (containerPos.y < 0) {
3619                         dy = containerPos.y - padding.y;
3620                 }
3621                 if (containerPos.y + containerHeight > size.y) {
3622                         dy = containerPos.y + containerHeight - size.y + padding.y;
3623                 }
3624
3625                 if (dx || dy) {
3626                         map.panBy(new L.Point(dx, dy));
3627                 }
3628         },
3629
3630         _onCloseButtonClick: function (e) {
3631                 this._close();
3632                 L.DomEvent.stop(e);
3633         }
3634 });
3635
3636 L.popup = function (options, source) {
3637         return new L.Popup(options, source);
3638 };
3639
3640
3641 /*
3642  * Popup extension to L.Marker, adding popup-related methods.
3643  */
3644
3645 L.Marker.include({
3646         openPopup: function () {
3647                 if (this._popup && this._map) {
3648                         this._popup.setLatLng(this._latlng);
3649                         this._map.openPopup(this._popup);
3650                 }
3651
3652                 return this;
3653         },
3654
3655         closePopup: function () {
3656                 if (this._popup) {
3657                         this._popup._close();
3658                 }
3659                 return this;
3660         },
3661
3662         bindPopup: function (content, options) {
3663                 var anchor = L.point(this.options.icon.options.popupAnchor) || new L.Point(0, 0);
3664
3665                 anchor = anchor.add(L.Popup.prototype.options.offset);
3666
3667                 if (options && options.offset) {
3668                         anchor = anchor.add(options.offset);
3669                 }
3670
3671                 options = L.extend({offset: anchor}, options);
3672
3673                 if (!this._popup) {
3674                         this
3675                             .on('click', this.openPopup, this)
3676                             .on('remove', this.closePopup, this)
3677                             .on('move', this._movePopup, this);
3678                 }
3679
3680                 this._popup = new L.Popup(options, this)
3681                         .setContent(content);
3682
3683                 return this;
3684         },
3685
3686         unbindPopup: function () {
3687                 if (this._popup) {
3688                         this._popup = null;
3689                         this
3690                             .off('click', this.openPopup)
3691                             .off('remove', this.closePopup)
3692                             .off('move', this._movePopup);
3693                 }
3694                 return this;
3695         },
3696
3697         _movePopup: function (e) {
3698                 this._popup.setLatLng(e.latlng);
3699         }
3700 });
3701
3702
3703 /*
3704  * Adds popup-related methods to L.Map.
3705  */
3706
3707 L.Map.include({
3708         openPopup: function (popup) {
3709                 this.closePopup();
3710
3711                 this._popup = popup;
3712
3713                 return this
3714                     .addLayer(popup)
3715                     .fire('popupopen', {popup: this._popup});
3716         },
3717
3718         closePopup: function () {
3719                 if (this._popup) {
3720                         this._popup._close();
3721                 }
3722                 return this;
3723         }
3724 });
3725
3726
3727 /*
3728  * L.LayerGroup is a class to combine several layers into one so that
3729  * you can manipulate the group (e.g. add/remove it) as one layer.
3730  */
3731
3732 L.LayerGroup = L.Class.extend({
3733         initialize: function (layers) {
3734                 this._layers = {};
3735
3736                 var i, len;
3737
3738                 if (layers) {
3739                         for (i = 0, len = layers.length; i < len; i++) {
3740                                 this.addLayer(layers[i]);
3741                         }
3742                 }
3743         },
3744
3745         addLayer: function (layer) {
3746                 var id = L.stamp(layer);
3747
3748                 this._layers[id] = layer;
3749
3750                 if (this._map) {
3751                         this._map.addLayer(layer);
3752                 }
3753
3754                 return this;
3755         },
3756
3757         removeLayer: function (layer) {
3758                 var id = L.stamp(layer);
3759
3760                 delete this._layers[id];
3761
3762                 if (this._map) {
3763                         this._map.removeLayer(layer);
3764                 }
3765
3766                 return this;
3767         },
3768
3769         clearLayers: function () {
3770                 this.eachLayer(this.removeLayer, this);
3771                 return this;
3772         },
3773
3774         invoke: function (methodName) {
3775                 var args = Array.prototype.slice.call(arguments, 1),
3776                     i, layer;
3777
3778                 for (i in this._layers) {
3779                         if (this._layers.hasOwnProperty(i)) {
3780                                 layer = this._layers[i];
3781
3782                                 if (layer[methodName]) {
3783                                         layer[methodName].apply(layer, args);
3784                                 }
3785                         }
3786                 }
3787
3788                 return this;
3789         },
3790
3791         onAdd: function (map) {
3792                 this._map = map;
3793                 this.eachLayer(map.addLayer, map);
3794         },
3795
3796         onRemove: function (map) {
3797                 this.eachLayer(map.removeLayer, map);
3798                 this._map = null;
3799         },
3800
3801         addTo: function (map) {
3802                 map.addLayer(this);
3803                 return this;
3804         },
3805
3806         eachLayer: function (method, context) {
3807                 for (var i in this._layers) {
3808                         if (this._layers.hasOwnProperty(i)) {
3809                                 method.call(context, this._layers[i]);
3810                         }
3811                 }
3812         },
3813
3814         setZIndex: function (zIndex) {
3815                 return this.invoke('setZIndex', zIndex);
3816         }
3817 });
3818
3819 L.layerGroup = function (layers) {
3820         return new L.LayerGroup(layers);
3821 };
3822
3823
3824 /*
3825  * L.FeatureGroup extends L.LayerGroup by introducing mouse events and additional methods
3826  * shared between a group of interactive layers (like vectors or markers).
3827  */
3828
3829 L.FeatureGroup = L.LayerGroup.extend({
3830         includes: L.Mixin.Events,
3831
3832         statics: {
3833                 EVENTS: 'click dblclick mouseover mouseout mousemove contextmenu'
3834         },
3835
3836         addLayer: function (layer) {
3837                 if (this._layers[L.stamp(layer)]) {
3838                         return this;
3839                 }
3840
3841                 layer.on(L.FeatureGroup.EVENTS, this._propagateEvent, this);
3842
3843                 L.LayerGroup.prototype.addLayer.call(this, layer);
3844
3845                 if (this._popupContent && layer.bindPopup) {
3846                         layer.bindPopup(this._popupContent, this._popupOptions);
3847                 }
3848
3849                 return this.fire('layeradd', {layer: layer});
3850         },
3851
3852         removeLayer: function (layer) {
3853                 layer.off(L.FeatureGroup.EVENTS, this._propagateEvent, this);
3854
3855                 L.LayerGroup.prototype.removeLayer.call(this, layer);
3856
3857
3858                 if (this._popupContent) {
3859                         this.invoke('unbindPopup');
3860                 }
3861
3862                 return this.fire('layerremove', {layer: layer});
3863         },
3864
3865         bindPopup: function (content, options) {
3866                 this._popupContent = content;
3867                 this._popupOptions = options;
3868                 return this.invoke('bindPopup', content, options);
3869         },
3870
3871         setStyle: function (style) {
3872                 return this.invoke('setStyle', style);
3873         },
3874
3875         bringToFront: function () {
3876                 return this.invoke('bringToFront');
3877         },
3878
3879         bringToBack: function () {
3880                 return this.invoke('bringToBack');
3881         },
3882
3883         getBounds: function () {
3884                 var bounds = new L.LatLngBounds();
3885
3886                 this.eachLayer(function (layer) {
3887                         bounds.extend(layer instanceof L.Marker ? layer.getLatLng() : layer.getBounds());
3888                 });
3889
3890                 return bounds;
3891         },
3892
3893         _propagateEvent: function (e) {
3894                 e.layer  = e.target;
3895                 e.target = this;
3896
3897                 this.fire(e.type, e);
3898         }
3899 });
3900
3901 L.featureGroup = function (layers) {
3902         return new L.FeatureGroup(layers);
3903 };
3904
3905
3906 /*
3907  * L.Path is a base class for rendering vector paths on a map. Inherited by Polyline, Circle, etc.
3908  */
3909
3910 L.Path = L.Class.extend({
3911         includes: [L.Mixin.Events],
3912
3913         statics: {
3914                 // how much to extend the clip area around the map view
3915                 // (relative to its size, e.g. 0.5 is half the screen in each direction)
3916                 // set it so that SVG element doesn't exceed 1280px (vectors flicker on dragend if it is)
3917                 CLIP_PADDING: L.Browser.mobile ?
3918                         Math.max(0, Math.min(0.5,
3919                                 (1280 / Math.max(window.innerWidth, window.innerHeight) - 1) / 2)) : 0.5
3920         },
3921
3922         options: {
3923                 stroke: true,
3924                 color: '#0033ff',
3925                 dashArray: null,
3926                 weight: 5,
3927                 opacity: 0.5,
3928
3929                 fill: false,
3930                 fillColor: null, //same as color by default
3931                 fillOpacity: 0.2,
3932
3933                 clickable: true
3934         },
3935
3936         initialize: function (options) {
3937                 L.setOptions(this, options);
3938         },
3939
3940         onAdd: function (map) {
3941                 this._map = map;
3942
3943                 if (!this._container) {
3944                         this._initElements();
3945                         this._initEvents();
3946                 }
3947
3948                 this.projectLatlngs();
3949                 this._updatePath();
3950
3951                 if (this._container) {
3952                         this._map._pathRoot.appendChild(this._container);
3953                 }
3954
3955                 this.fire('add');
3956
3957                 map.on({
3958                         'viewreset': this.projectLatlngs,
3959                         'moveend': this._updatePath
3960                 }, this);
3961         },
3962
3963         addTo: function (map) {
3964                 map.addLayer(this);
3965                 return this;
3966         },
3967
3968         onRemove: function (map) {
3969                 map._pathRoot.removeChild(this._container);
3970
3971                 // Need to fire remove event before we set _map to null as the event hooks might need the object
3972                 this.fire('remove');
3973                 this._map = null;
3974
3975                 if (L.Browser.vml) {
3976                         this._container = null;
3977                         this._stroke = null;
3978                         this._fill = null;
3979                 }
3980
3981                 map.off({
3982                         'viewreset': this.projectLatlngs,
3983                         'moveend': this._updatePath
3984                 }, this);
3985         },
3986
3987         projectLatlngs: function () {
3988                 // do all projection stuff here
3989         },
3990
3991         setStyle: function (style) {
3992                 L.setOptions(this, style);
3993
3994                 if (this._container) {
3995                         this._updateStyle();
3996                 }
3997
3998                 return this;
3999         },
4000
4001         redraw: function () {
4002                 if (this._map) {
4003                         this.projectLatlngs();
4004                         this._updatePath();
4005                 }
4006                 return this;
4007         }
4008 });
4009
4010 L.Map.include({
4011         _updatePathViewport: function () {
4012                 var p = L.Path.CLIP_PADDING,
4013                     size = this.getSize(),
4014                     panePos = L.DomUtil.getPosition(this._mapPane),
4015                     min = panePos.multiplyBy(-1)._subtract(size.multiplyBy(p)._round()),
4016                     max = min.add(size.multiplyBy(1 + p * 2)._round());
4017
4018                 this._pathViewport = new L.Bounds(min, max);
4019         }
4020 });
4021
4022
4023 /*
4024  * Extends L.Path with SVG-specific rendering code.
4025  */
4026
4027 L.Path.SVG_NS = 'http://www.w3.org/2000/svg';
4028
4029 L.Browser.svg = !!(document.createElementNS && document.createElementNS(L.Path.SVG_NS, 'svg').createSVGRect);
4030
4031 L.Path = L.Path.extend({
4032         statics: {
4033                 SVG: L.Browser.svg
4034         },
4035
4036         bringToFront: function () {
4037                 var root = this._map._pathRoot,
4038                     path = this._container;
4039
4040                 if (path && root.lastChild !== path) {
4041                         root.appendChild(path);
4042                 }
4043                 return this;
4044         },
4045
4046         bringToBack: function () {
4047                 var root = this._map._pathRoot,
4048                     path = this._container,
4049                     first = root.firstChild;
4050
4051                 if (path && first !== path) {
4052                         root.insertBefore(path, first);
4053                 }
4054                 return this;
4055         },
4056
4057         getPathString: function () {
4058                 // form path string here
4059         },
4060
4061         _createElement: function (name) {
4062                 return document.createElementNS(L.Path.SVG_NS, name);
4063         },
4064
4065         _initElements: function () {
4066                 this._map._initPathRoot();
4067                 this._initPath();
4068                 this._initStyle();
4069         },
4070
4071         _initPath: function () {
4072                 this._container = this._createElement('g');
4073
4074                 this._path = this._createElement('path');
4075                 this._container.appendChild(this._path);
4076         },
4077
4078         _initStyle: function () {
4079                 if (this.options.stroke) {
4080                         this._path.setAttribute('stroke-linejoin', 'round');
4081                         this._path.setAttribute('stroke-linecap', 'round');
4082                 }
4083                 if (this.options.fill) {
4084                         this._path.setAttribute('fill-rule', 'evenodd');
4085                 }
4086                 this._updateStyle();
4087         },
4088
4089         _updateStyle: function () {
4090                 if (this.options.stroke) {
4091                         this._path.setAttribute('stroke', this.options.color);
4092                         this._path.setAttribute('stroke-opacity', this.options.opacity);
4093                         this._path.setAttribute('stroke-width', this.options.weight);
4094                         if (this.options.dashArray) {
4095                                 this._path.setAttribute('stroke-dasharray', this.options.dashArray);
4096                         } else {
4097                                 this._path.removeAttribute('stroke-dasharray');
4098                         }
4099                 } else {
4100                         this._path.setAttribute('stroke', 'none');
4101                 }
4102                 if (this.options.fill) {
4103                         this._path.setAttribute('fill', this.options.fillColor || this.options.color);
4104                         this._path.setAttribute('fill-opacity', this.options.fillOpacity);
4105                 } else {
4106                         this._path.setAttribute('fill', 'none');
4107                 }
4108         },
4109
4110         _updatePath: function () {
4111                 var str = this.getPathString();
4112                 if (!str) {
4113                         // fix webkit empty string parsing bug
4114                         str = 'M0 0';
4115                 }
4116                 this._path.setAttribute('d', str);
4117         },
4118
4119         // TODO remove duplication with L.Map
4120         _initEvents: function () {
4121                 if (this.options.clickable) {
4122                         if (L.Browser.svg || !L.Browser.vml) {
4123                                 this._path.setAttribute('class', 'leaflet-clickable');
4124                         }
4125
4126                         L.DomEvent.on(this._container, 'click', this._onMouseClick, this);
4127
4128                         var events = ['dblclick', 'mousedown', 'mouseover',
4129                                       'mouseout', 'mousemove', 'contextmenu'];
4130                         for (var i = 0; i < events.length; i++) {
4131                                 L.DomEvent.on(this._container, events[i], this._fireMouseEvent, this);
4132                         }
4133                 }
4134         },
4135
4136         _onMouseClick: function (e) {
4137                 if (this._map.dragging && this._map.dragging.moved()) { return; }
4138
4139                 this._fireMouseEvent(e);
4140         },
4141
4142         _fireMouseEvent: function (e) {
4143                 if (!this.hasEventListeners(e.type)) { return; }
4144
4145                 var map = this._map,
4146                     containerPoint = map.mouseEventToContainerPoint(e),
4147                     layerPoint = map.containerPointToLayerPoint(containerPoint),
4148                     latlng = map.layerPointToLatLng(layerPoint);
4149
4150                 this.fire(e.type, {
4151                         latlng: latlng,
4152                         layerPoint: layerPoint,
4153                         containerPoint: containerPoint,
4154                         originalEvent: e
4155                 });
4156
4157                 if (e.type === 'contextmenu') {
4158                         L.DomEvent.preventDefault(e);
4159                 }
4160                 if (e.type !== 'mousemove') {
4161                         L.DomEvent.stopPropagation(e);
4162                 }
4163         }
4164 });
4165
4166 L.Map.include({
4167         _initPathRoot: function () {
4168                 if (!this._pathRoot) {
4169                         this._pathRoot = L.Path.prototype._createElement('svg');
4170                         this._panes.overlayPane.appendChild(this._pathRoot);
4171
4172                         if (this.options.zoomAnimation && L.Browser.any3d) {
4173                                 this._pathRoot.setAttribute('class', ' leaflet-zoom-animated');
4174
4175                                 this.on({
4176                                         'zoomanim': this._animatePathZoom,
4177                                         'zoomend': this._endPathZoom
4178                                 });
4179                         } else {
4180                                 this._pathRoot.setAttribute('class', ' leaflet-zoom-hide');
4181                         }
4182
4183                         this.on('moveend', this._updateSvgViewport);
4184                         this._updateSvgViewport();
4185                 }
4186         },
4187
4188         _animatePathZoom: function (e) {
4189                 var scale = this.getZoomScale(e.zoom),
4190                     offset = this._getCenterOffset(e.center)._multiplyBy(-scale)._add(this._pathViewport.min);
4191
4192                 this._pathRoot.style[L.DomUtil.TRANSFORM] =
4193                         L.DomUtil.getTranslateString(offset) + ' scale(' + scale + ') ';
4194
4195                 this._pathZooming = true;
4196         },
4197
4198         _endPathZoom: function () {
4199                 this._pathZooming = false;
4200         },
4201
4202         _updateSvgViewport: function () {
4203
4204                 if (this._pathZooming) {
4205                         // Do not update SVGs while a zoom animation is going on otherwise the animation will break.
4206                         // When the zoom animation ends we will be updated again anyway
4207                         // This fixes the case where you do a momentum move and zoom while the move is still ongoing.
4208                         return;
4209                 }
4210
4211                 this._updatePathViewport();
4212
4213                 var vp = this._pathViewport,
4214                     min = vp.min,
4215                     max = vp.max,
4216                     width = max.x - min.x,
4217                     height = max.y - min.y,
4218                     root = this._pathRoot,
4219                     pane = this._panes.overlayPane;
4220
4221                 // Hack to make flicker on drag end on mobile webkit less irritating
4222                 if (L.Browser.mobileWebkit) {
4223                         pane.removeChild(root);
4224                 }
4225
4226                 L.DomUtil.setPosition(root, min);
4227                 root.setAttribute('width', width);
4228                 root.setAttribute('height', height);
4229                 root.setAttribute('viewBox', [min.x, min.y, width, height].join(' '));
4230
4231                 if (L.Browser.mobileWebkit) {
4232                         pane.appendChild(root);
4233                 }
4234         }
4235 });
4236
4237
4238 /*
4239  * Popup extension to L.Path (polylines, polygons, circles), adding popup-related methods.
4240  */
4241
4242 L.Path.include({
4243
4244         bindPopup: function (content, options) {
4245
4246                 if (!this._popup || options) {
4247                         this._popup = new L.Popup(options, this);
4248                 }
4249
4250                 this._popup.setContent(content);
4251
4252                 if (!this._popupHandlersAdded) {
4253                         this
4254                             .on('click', this._openPopup, this)
4255                             .on('remove', this.closePopup, this);
4256
4257                         this._popupHandlersAdded = true;
4258                 }
4259
4260                 return this;
4261         },
4262
4263         unbindPopup: function () {
4264                 if (this._popup) {
4265                         this._popup = null;
4266                         this
4267                             .off('click', this._openPopup)
4268                             .off('remove', this.closePopup);
4269
4270                         this._popupHandlersAdded = false;
4271                 }
4272                 return this;
4273         },
4274
4275         openPopup: function (latlng) {
4276
4277                 if (this._popup) {
4278                         // open the popup from one of the path's points if not specified
4279                         latlng = latlng || this._latlng ||
4280                                  this._latlngs[Math.floor(this._latlngs.length / 2)];
4281
4282                         this._openPopup({latlng: latlng});
4283                 }
4284
4285                 return this;
4286         },
4287
4288         closePopup: function () {
4289                 if (this._popup) {
4290                         this._popup._close();
4291                 }
4292                 return this;
4293         },
4294
4295         _openPopup: function (e) {
4296                 this._popup.setLatLng(e.latlng);
4297                 this._map.openPopup(this._popup);
4298         }
4299 });
4300
4301
4302 /*
4303  * Vector rendering for IE6-8 through VML.
4304  * Thanks to Dmitry Baranovsky and his Raphael library for inspiration!
4305  */
4306
4307 L.Browser.vml = !L.Browser.svg && (function () {
4308         try {
4309                 var div = document.createElement('div');
4310                 div.innerHTML = '<v:shape adj="1"/>';
4311
4312                 var shape = div.firstChild;
4313                 shape.style.behavior = 'url(#default#VML)';
4314
4315                 return shape && (typeof shape.adj === 'object');
4316
4317         } catch (e) {
4318                 return false;
4319         }
4320 }());
4321
4322 L.Path = L.Browser.svg || !L.Browser.vml ? L.Path : L.Path.extend({
4323         statics: {
4324                 VML: true,
4325                 CLIP_PADDING: 0.02
4326         },
4327
4328         _createElement: (function () {
4329                 try {
4330                         document.namespaces.add('lvml', 'urn:schemas-microsoft-com:vml');
4331                         return function (name) {
4332                                 return document.createElement('<lvml:' + name + ' class="lvml">');
4333                         };
4334                 } catch (e) {
4335                         return function (name) {
4336                                 return document.createElement(
4337                                         '<' + name + ' xmlns="urn:schemas-microsoft.com:vml" class="lvml">');
4338                         };
4339                 }
4340         }()),
4341
4342         _initPath: function () {
4343                 var container = this._container = this._createElement('shape');
4344                 L.DomUtil.addClass(container, 'leaflet-vml-shape');
4345                 if (this.options.clickable) {
4346                         L.DomUtil.addClass(container, 'leaflet-clickable');
4347                 }
4348                 container.coordsize = '1 1';
4349
4350                 this._path = this._createElement('path');
4351                 container.appendChild(this._path);
4352
4353                 this._map._pathRoot.appendChild(container);
4354         },
4355
4356         _initStyle: function () {
4357                 this._updateStyle();
4358         },
4359
4360         _updateStyle: function () {
4361                 var stroke = this._stroke,
4362                     fill = this._fill,
4363                     options = this.options,
4364                     container = this._container;
4365
4366                 container.stroked = options.stroke;
4367                 container.filled = options.fill;
4368
4369                 if (options.stroke) {
4370                         if (!stroke) {
4371                                 stroke = this._stroke = this._createElement('stroke');
4372                                 stroke.endcap = 'round';
4373                                 container.appendChild(stroke);
4374                         }
4375                         stroke.weight = options.weight + 'px';
4376                         stroke.color = options.color;
4377                         stroke.opacity = options.opacity;
4378
4379                         if (options.dashArray) {
4380                                 stroke.dashStyle = options.dashArray instanceof Array ?
4381                                     options.dashArray.join(' ') :
4382                                     options.dashArray.replace(/ *, */g, ' ');
4383                         } else {
4384                                 stroke.dashStyle = '';
4385                         }
4386
4387                 } else if (stroke) {
4388                         container.removeChild(stroke);
4389                         this._stroke = null;
4390                 }
4391
4392                 if (options.fill) {
4393                         if (!fill) {
4394                                 fill = this._fill = this._createElement('fill');
4395                                 container.appendChild(fill);
4396                         }
4397                         fill.color = options.fillColor || options.color;
4398                         fill.opacity = options.fillOpacity;
4399
4400                 } else if (fill) {
4401                         container.removeChild(fill);
4402                         this._fill = null;
4403                 }
4404         },
4405
4406         _updatePath: function () {
4407                 var style = this._container.style;
4408
4409                 style.display = 'none';
4410                 this._path.v = this.getPathString() + ' '; // the space fixes IE empty path string bug
4411                 style.display = '';
4412         }
4413 });
4414
4415 L.Map.include(L.Browser.svg || !L.Browser.vml ? {} : {
4416         _initPathRoot: function () {
4417                 if (this._pathRoot) { return; }
4418
4419                 var root = this._pathRoot = document.createElement('div');
4420                 root.className = 'leaflet-vml-container';
4421                 this._panes.overlayPane.appendChild(root);
4422
4423                 this.on('moveend', this._updatePathViewport);
4424                 this._updatePathViewport();
4425         }
4426 });
4427
4428
4429 /*
4430  * Vector rendering for all browsers that support canvas.
4431  */
4432
4433 L.Browser.canvas = (function () {
4434         return !!document.createElement('canvas').getContext;
4435 }());
4436
4437 L.Path = (L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? L.Path : L.Path.extend({
4438         statics: {
4439                 //CLIP_PADDING: 0.02, // not sure if there's a need to set it to a small value
4440                 CANVAS: true,
4441                 SVG: false
4442         },
4443
4444         redraw: function () {
4445                 if (this._map) {
4446                         this.projectLatlngs();
4447                         this._requestUpdate();
4448                 }
4449                 return this;
4450         },
4451
4452         setStyle: function (style) {
4453                 L.setOptions(this, style);
4454
4455                 if (this._map) {
4456                         this._updateStyle();
4457                         this._requestUpdate();
4458                 }
4459                 return this;
4460         },
4461
4462         onRemove: function (map) {
4463                 map
4464                     .off('viewreset', this.projectLatlngs, this)
4465                     .off('moveend', this._updatePath, this);
4466
4467                 if (this.options.clickable) {
4468                         this._map.off('click', this._onClick, this);
4469                 }
4470
4471                 this._requestUpdate();
4472
4473                 this._map = null;
4474         },
4475
4476         _requestUpdate: function () {
4477                 if (this._map && !L.Path._updateRequest) {
4478                         L.Path._updateRequest = L.Util.requestAnimFrame(this._fireMapMoveEnd, this._map);
4479                 }
4480         },
4481
4482         _fireMapMoveEnd: function () {
4483                 L.Path._updateRequest = null;
4484                 this.fire('moveend');
4485         },
4486
4487         _initElements: function () {
4488                 this._map._initPathRoot();
4489                 this._ctx = this._map._canvasCtx;
4490         },
4491
4492         _updateStyle: function () {
4493                 var options = this.options;
4494
4495                 if (options.stroke) {
4496                         this._ctx.lineWidth = options.weight;
4497                         this._ctx.strokeStyle = options.color;
4498                 }
4499                 if (options.fill) {
4500                         this._ctx.fillStyle = options.fillColor || options.color;
4501                 }
4502         },
4503
4504         _drawPath: function () {
4505                 var i, j, len, len2, point, drawMethod;
4506
4507                 this._ctx.beginPath();
4508
4509                 for (i = 0, len = this._parts.length; i < len; i++) {
4510                         for (j = 0, len2 = this._parts[i].length; j < len2; j++) {
4511                                 point = this._parts[i][j];
4512                                 drawMethod = (j === 0 ? 'move' : 'line') + 'To';
4513
4514                                 this._ctx[drawMethod](point.x, point.y);
4515                         }
4516                         // TODO refactor ugly hack
4517                         if (this instanceof L.Polygon) {
4518                                 this._ctx.closePath();
4519                         }
4520                 }
4521         },
4522
4523         _checkIfEmpty: function () {
4524                 return !this._parts.length;
4525         },
4526
4527         _updatePath: function () {
4528                 if (this._checkIfEmpty()) { return; }
4529
4530                 var ctx = this._ctx,
4531                     options = this.options;
4532
4533                 this._drawPath();
4534                 ctx.save();
4535                 this._updateStyle();
4536
4537                 if (options.fill) {
4538                         ctx.globalAlpha = options.fillOpacity;
4539                         ctx.fill();
4540                 }
4541
4542                 if (options.stroke) {
4543                         ctx.globalAlpha = options.opacity;
4544                         ctx.stroke();
4545                 }
4546
4547                 ctx.restore();
4548
4549                 // TODO optimization: 1 fill/stroke for all features with equal style instead of 1 for each feature
4550         },
4551
4552         _initEvents: function () {
4553                 if (this.options.clickable) {
4554                         // TODO hand cursor
4555                         // TODO mouseover, mouseout, dblclick
4556                         this._map.on('click', this._onClick, this);
4557                 }
4558         },
4559
4560         _onClick: function (e) {
4561                 if (this._containsPoint(e.layerPoint)) {
4562                         this.fire('click', {
4563                                 latlng: e.latlng,
4564                                 layerPoint: e.layerPoint,
4565                                 containerPoint: e.containerPoint,
4566                                 originalEvent: e
4567                         });
4568                 }
4569         }
4570 });
4571
4572 L.Map.include((L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? {} : {
4573         _initPathRoot: function () {
4574                 var root = this._pathRoot,
4575                     ctx;
4576
4577                 if (!root) {
4578                         root = this._pathRoot = document.createElement("canvas");
4579                         root.style.position = 'absolute';
4580                         ctx = this._canvasCtx = root.getContext('2d');
4581
4582                         ctx.lineCap = "round";
4583                         ctx.lineJoin = "round";
4584
4585                         this._panes.overlayPane.appendChild(root);
4586
4587                         if (this.options.zoomAnimation) {
4588                                 this._pathRoot.className = 'leaflet-zoom-animated';
4589                                 this.on('zoomanim', this._animatePathZoom);
4590                                 this.on('zoomend', this._endPathZoom);
4591                         }
4592                         this.on('moveend', this._updateCanvasViewport);
4593                         this._updateCanvasViewport();
4594                 }
4595         },
4596
4597         _updateCanvasViewport: function () {
4598                 // don't redraw while zooming. See _updateSvgViewport for more details
4599                 if (this._pathZooming) { return; }
4600                 this._updatePathViewport();
4601
4602                 var vp = this._pathViewport,
4603                     min = vp.min,
4604                     size = vp.max.subtract(min),
4605                     root = this._pathRoot;
4606
4607                 //TODO check if this works properly on mobile webkit
4608                 L.DomUtil.setPosition(root, min);
4609                 root.width = size.x;
4610                 root.height = size.y;
4611                 root.getContext('2d').translate(-min.x, -min.y);
4612         }
4613 });
4614
4615
4616 /*
4617  * L.LineUtil contains different utility functions for line segments
4618  * and polylines (clipping, simplification, distances, etc.)
4619  */
4620
4621 /*jshint bitwise:false */ // allow bitwise oprations for this file
4622
4623 L.LineUtil = {
4624
4625         // Simplify polyline with vertex reduction and Douglas-Peucker simplification.
4626         // Improves rendering performance dramatically by lessening the number of points to draw.
4627
4628         simplify: function (/*Point[]*/ points, /*Number*/ tolerance) {
4629                 if (!tolerance || !points.length) {
4630                         return points.slice();
4631                 }
4632
4633                 var sqTolerance = tolerance * tolerance;
4634
4635                 // stage 1: vertex reduction
4636                 points = this._reducePoints(points, sqTolerance);
4637
4638                 // stage 2: Douglas-Peucker simplification
4639                 points = this._simplifyDP(points, sqTolerance);
4640
4641                 return points;
4642         },
4643
4644         // distance from a point to a segment between two points
4645         pointToSegmentDistance:  function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
4646                 return Math.sqrt(this._sqClosestPointOnSegment(p, p1, p2, true));
4647         },
4648
4649         closestPointOnSegment: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
4650                 return this._sqClosestPointOnSegment(p, p1, p2);
4651         },
4652
4653         // Douglas-Peucker simplification, see http://en.wikipedia.org/wiki/Douglas-Peucker_algorithm
4654         _simplifyDP: function (points, sqTolerance) {
4655
4656                 var len = points.length,
4657                     ArrayConstructor = typeof Uint8Array !== undefined + '' ? Uint8Array : Array,
4658                     markers = new ArrayConstructor(len);
4659
4660                 markers[0] = markers[len - 1] = 1;
4661
4662                 this._simplifyDPStep(points, markers, sqTolerance, 0, len - 1);
4663
4664                 var i,
4665                     newPoints = [];
4666
4667                 for (i = 0; i < len; i++) {
4668                         if (markers[i]) {
4669                                 newPoints.push(points[i]);
4670                         }
4671                 }
4672
4673                 return newPoints;
4674         },
4675
4676         _simplifyDPStep: function (points, markers, sqTolerance, first, last) {
4677
4678                 var maxSqDist = 0,
4679                     index, i, sqDist;
4680
4681                 for (i = first + 1; i <= last - 1; i++) {
4682                         sqDist = this._sqClosestPointOnSegment(points[i], points[first], points[last], true);
4683
4684                         if (sqDist > maxSqDist) {
4685                                 index = i;
4686                                 maxSqDist = sqDist;
4687                         }
4688                 }
4689
4690                 if (maxSqDist > sqTolerance) {
4691                         markers[index] = 1;
4692
4693                         this._simplifyDPStep(points, markers, sqTolerance, first, index);
4694                         this._simplifyDPStep(points, markers, sqTolerance, index, last);
4695                 }
4696         },
4697
4698         // reduce points that are too close to each other to a single point
4699         _reducePoints: function (points, sqTolerance) {
4700                 var reducedPoints = [points[0]];
4701
4702                 for (var i = 1, prev = 0, len = points.length; i < len; i++) {
4703                         if (this._sqDist(points[i], points[prev]) > sqTolerance) {
4704                                 reducedPoints.push(points[i]);
4705                                 prev = i;
4706                         }
4707                 }
4708                 if (prev < len - 1) {
4709                         reducedPoints.push(points[len - 1]);
4710                 }
4711                 return reducedPoints;
4712         },
4713
4714         // Cohen-Sutherland line clipping algorithm.
4715         // Used to avoid rendering parts of a polyline that are not currently visible.
4716
4717         clipSegment: function (a, b, bounds, useLastCode) {
4718                 var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds),
4719                     codeB = this._getBitCode(b, bounds),
4720
4721                     codeOut, p, newCode;
4722
4723                 // save 2nd code to avoid calculating it on the next segment
4724                 this._lastCode = codeB;
4725
4726                 while (true) {
4727                         // if a,b is inside the clip window (trivial accept)
4728                         if (!(codeA | codeB)) {
4729                                 return [a, b];
4730                         // if a,b is outside the clip window (trivial reject)
4731                         } else if (codeA & codeB) {
4732                                 return false;
4733                         // other cases
4734                         } else {
4735                                 codeOut = codeA || codeB,
4736                                 p = this._getEdgeIntersection(a, b, codeOut, bounds),
4737                                 newCode = this._getBitCode(p, bounds);
4738
4739                                 if (codeOut === codeA) {
4740                                         a = p;
4741                                         codeA = newCode;
4742                                 } else {
4743                                         b = p;
4744                                         codeB = newCode;
4745                                 }
4746                         }
4747                 }
4748         },
4749
4750         _getEdgeIntersection: function (a, b, code, bounds) {
4751                 var dx = b.x - a.x,
4752                     dy = b.y - a.y,
4753                     min = bounds.min,
4754                     max = bounds.max;
4755
4756                 if (code & 8) { // top
4757                         return new L.Point(a.x + dx * (max.y - a.y) / dy, max.y);
4758                 } else if (code & 4) { // bottom
4759                         return new L.Point(a.x + dx * (min.y - a.y) / dy, min.y);
4760                 } else if (code & 2) { // right
4761                         return new L.Point(max.x, a.y + dy * (max.x - a.x) / dx);
4762                 } else if (code & 1) { // left
4763                         return new L.Point(min.x, a.y + dy * (min.x - a.x) / dx);
4764                 }
4765         },
4766
4767         _getBitCode: function (/*Point*/ p, bounds) {
4768                 var code = 0;
4769
4770                 if (p.x < bounds.min.x) { // left
4771                         code |= 1;
4772                 } else if (p.x > bounds.max.x) { // right
4773                         code |= 2;
4774                 }
4775                 if (p.y < bounds.min.y) { // bottom
4776                         code |= 4;
4777                 } else if (p.y > bounds.max.y) { // top
4778                         code |= 8;
4779                 }
4780
4781                 return code;
4782         },
4783
4784         // square distance (to avoid unnecessary Math.sqrt calls)
4785         _sqDist: function (p1, p2) {
4786                 var dx = p2.x - p1.x,
4787                     dy = p2.y - p1.y;
4788                 return dx * dx + dy * dy;
4789         },
4790
4791         // return closest point on segment or distance to that point
4792         _sqClosestPointOnSegment: function (p, p1, p2, sqDist) {
4793                 var x = p1.x,
4794                     y = p1.y,
4795                     dx = p2.x - x,
4796                     dy = p2.y - y,
4797                     dot = dx * dx + dy * dy,
4798                     t;
4799
4800                 if (dot > 0) {
4801                         t = ((p.x - x) * dx + (p.y - y) * dy) / dot;
4802
4803                         if (t > 1) {
4804                                 x = p2.x;
4805                                 y = p2.y;
4806                         } else if (t > 0) {
4807                                 x += dx * t;
4808                                 y += dy * t;
4809                         }
4810                 }
4811
4812                 dx = p.x - x;
4813                 dy = p.y - y;
4814
4815                 return sqDist ? dx * dx + dy * dy : new L.Point(x, y);
4816         }
4817 };
4818
4819
4820 /*
4821  * L.Polygon is used to display polylines on a map.
4822  */
4823
4824 L.Polyline = L.Path.extend({
4825         initialize: function (latlngs, options) {
4826                 L.Path.prototype.initialize.call(this, options);
4827
4828                 this._latlngs = this._convertLatLngs(latlngs);
4829         },
4830
4831         options: {
4832                 // how much to simplify the polyline on each zoom level
4833                 // more = better performance and smoother look, less = more accurate
4834                 smoothFactor: 1.0,
4835                 noClip: false
4836         },
4837
4838         projectLatlngs: function () {
4839                 this._originalPoints = [];
4840
4841                 for (var i = 0, len = this._latlngs.length; i < len; i++) {
4842                         this._originalPoints[i] = this._map.latLngToLayerPoint(this._latlngs[i]);
4843                 }
4844         },
4845
4846         getPathString: function () {
4847                 for (var i = 0, len = this._parts.length, str = ''; i < len; i++) {
4848                         str += this._getPathPartStr(this._parts[i]);
4849                 }
4850                 return str;
4851         },
4852
4853         getLatLngs: function () {
4854                 return this._latlngs;
4855         },
4856
4857         setLatLngs: function (latlngs) {
4858                 this._latlngs = this._convertLatLngs(latlngs);
4859                 return this.redraw();
4860         },
4861
4862         addLatLng: function (latlng) {
4863                 this._latlngs.push(L.latLng(latlng));
4864                 return this.redraw();
4865         },
4866
4867         spliceLatLngs: function () { // (Number index, Number howMany)
4868                 var removed = [].splice.apply(this._latlngs, arguments);
4869                 this._convertLatLngs(this._latlngs);
4870                 this.redraw();
4871                 return removed;
4872         },
4873
4874         closestLayerPoint: function (p) {
4875                 var minDistance = Infinity, parts = this._parts, p1, p2, minPoint = null;
4876
4877                 for (var j = 0, jLen = parts.length; j < jLen; j++) {
4878                         var points = parts[j];
4879                         for (var i = 1, len = points.length; i < len; i++) {
4880                                 p1 = points[i - 1];
4881                                 p2 = points[i];
4882                                 var sqDist = L.LineUtil._sqClosestPointOnSegment(p, p1, p2, true);
4883                                 if (sqDist < minDistance) {
4884                                         minDistance = sqDist;
4885                                         minPoint = L.LineUtil._sqClosestPointOnSegment(p, p1, p2);
4886                                 }
4887                         }
4888                 }
4889                 if (minPoint) {
4890                         minPoint.distance = Math.sqrt(minDistance);
4891                 }
4892                 return minPoint;
4893         },
4894
4895         getBounds: function () {
4896                 var bounds = new L.LatLngBounds(),
4897                     latLngs = this.getLatLngs(),
4898                     i, len;
4899
4900                 for (i = 0, len = latLngs.length; i < len; i++) {
4901                         bounds.extend(latLngs[i]);
4902                 }
4903
4904                 return bounds;
4905         },
4906
4907         _convertLatLngs: function (latlngs) {
4908                 var i, len;
4909                 for (i = 0, len = latlngs.length; i < len; i++) {
4910                         if (L.Util.isArray(latlngs[i]) && typeof latlngs[i][0] !== 'number') {
4911                                 return;
4912                         }
4913                         latlngs[i] = L.latLng(latlngs[i]);
4914                 }
4915                 return latlngs;
4916         },
4917
4918         _initEvents: function () {
4919                 L.Path.prototype._initEvents.call(this);
4920         },
4921
4922         _getPathPartStr: function (points) {
4923                 var round = L.Path.VML;
4924
4925                 for (var j = 0, len2 = points.length, str = '', p; j < len2; j++) {
4926                         p = points[j];
4927                         if (round) {
4928                                 p._round();
4929                         }
4930                         str += (j ? 'L' : 'M') + p.x + ' ' + p.y;
4931                 }
4932                 return str;
4933         },
4934
4935         _clipPoints: function () {
4936                 var points = this._originalPoints,
4937                     len = points.length,
4938                     i, k, segment;
4939
4940                 if (this.options.noClip) {
4941                         this._parts = [points];
4942                         return;
4943                 }
4944
4945                 this._parts = [];
4946
4947                 var parts = this._parts,
4948                     vp = this._map._pathViewport,
4949                     lu = L.LineUtil;
4950
4951                 for (i = 0, k = 0; i < len - 1; i++) {
4952                         segment = lu.clipSegment(points[i], points[i + 1], vp, i);
4953                         if (!segment) {
4954                                 continue;
4955                         }
4956
4957                         parts[k] = parts[k] || [];
4958                         parts[k].push(segment[0]);
4959
4960                         // if segment goes out of screen, or it's the last one, it's the end of the line part
4961                         if ((segment[1] !== points[i + 1]) || (i === len - 2)) {
4962                                 parts[k].push(segment[1]);
4963                                 k++;
4964                         }
4965                 }
4966         },
4967
4968         // simplify each clipped part of the polyline
4969         _simplifyPoints: function () {
4970                 var parts = this._parts,
4971                     lu = L.LineUtil;
4972
4973                 for (var i = 0, len = parts.length; i < len; i++) {
4974                         parts[i] = lu.simplify(parts[i], this.options.smoothFactor);
4975                 }
4976         },
4977
4978         _updatePath: function () {
4979                 if (!this._map) { return; }
4980
4981                 this._clipPoints();
4982                 this._simplifyPoints();
4983
4984                 L.Path.prototype._updatePath.call(this);
4985         }
4986 });
4987
4988 L.polyline = function (latlngs, options) {
4989         return new L.Polyline(latlngs, options);
4990 };
4991
4992
4993 /*
4994  * L.PolyUtil contains utility functions for polygons (clipping, etc.).
4995  */
4996
4997 /*jshint bitwise:false */ // allow bitwise operations here
4998
4999 L.PolyUtil = {};
5000
5001 /*
5002  * Sutherland-Hodgeman polygon clipping algorithm.
5003  * Used to avoid rendering parts of a polygon that are not currently visible.
5004  */
5005 L.PolyUtil.clipPolygon = function (points, bounds) {
5006         var clippedPoints,
5007             edges = [1, 4, 2, 8],
5008             i, j, k,
5009             a, b,
5010             len, edge, p,
5011             lu = L.LineUtil;
5012
5013         for (i = 0, len = points.length; i < len; i++) {
5014                 points[i]._code = lu._getBitCode(points[i], bounds);
5015         }
5016
5017         // for each edge (left, bottom, right, top)
5018         for (k = 0; k < 4; k++) {
5019                 edge = edges[k];
5020                 clippedPoints = [];
5021
5022                 for (i = 0, len = points.length, j = len - 1; i < len; j = i++) {
5023                         a = points[i];
5024                         b = points[j];
5025
5026                         // if a is inside the clip window
5027                         if (!(a._code & edge)) {
5028                                 // if b is outside the clip window (a->b goes out of screen)
5029                                 if (b._code & edge) {
5030                                         p = lu._getEdgeIntersection(b, a, edge, bounds);
5031                                         p._code = lu._getBitCode(p, bounds);
5032                                         clippedPoints.push(p);
5033                                 }
5034                                 clippedPoints.push(a);
5035
5036                         // else if b is inside the clip window (a->b enters the screen)
5037                         } else if (!(b._code & edge)) {
5038                                 p = lu._getEdgeIntersection(b, a, edge, bounds);
5039                                 p._code = lu._getBitCode(p, bounds);
5040                                 clippedPoints.push(p);
5041                         }
5042                 }
5043                 points = clippedPoints;
5044         }
5045
5046         return points;
5047 };
5048
5049
5050 /*
5051  * L.Polygon is used to display polygons on a map.
5052  */
5053
5054 L.Polygon = L.Polyline.extend({
5055         options: {
5056                 fill: true
5057         },
5058
5059         initialize: function (latlngs, options) {
5060                 L.Polyline.prototype.initialize.call(this, latlngs, options);
5061
5062                 if (latlngs && L.Util.isArray(latlngs[0]) && (typeof latlngs[0][0] !== 'number')) {
5063                         this._latlngs = this._convertLatLngs(latlngs[0]);
5064                         this._holes = latlngs.slice(1);
5065                 }
5066         },
5067
5068         projectLatlngs: function () {
5069                 L.Polyline.prototype.projectLatlngs.call(this);
5070
5071                 // project polygon holes points
5072                 // TODO move this logic to Polyline to get rid of duplication
5073                 this._holePoints = [];
5074
5075                 if (!this._holes) { return; }
5076
5077                 var i, j, len, len2;
5078
5079                 for (i = 0, len = this._holes.length; i < len; i++) {
5080                         this._holePoints[i] = [];
5081
5082                         for (j = 0, len2 = this._holes[i].length; j < len2; j++) {
5083                                 this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]);
5084                         }
5085                 }
5086         },
5087
5088         _clipPoints: function () {
5089                 var points = this._originalPoints,
5090                     newParts = [];
5091
5092                 this._parts = [points].concat(this._holePoints);
5093
5094                 if (this.options.noClip) { return; }
5095
5096                 for (var i = 0, len = this._parts.length; i < len; i++) {
5097                         var clipped = L.PolyUtil.clipPolygon(this._parts[i], this._map._pathViewport);
5098                         if (clipped.length) {
5099                                 newParts.push(clipped);
5100                         }
5101                 }
5102
5103                 this._parts = newParts;
5104         },
5105
5106         _getPathPartStr: function (points) {
5107                 var str = L.Polyline.prototype._getPathPartStr.call(this, points);
5108                 return str + (L.Browser.svg ? 'z' : 'x');
5109         }
5110 });
5111
5112 L.polygon = function (latlngs, options) {
5113         return new L.Polygon(latlngs, options);
5114 };
5115
5116
5117 /*
5118  * Contains L.MultiPolyline and L.MultiPolygon layers.
5119  */
5120
5121 (function () {
5122         function createMulti(Klass) {
5123
5124                 return L.FeatureGroup.extend({
5125
5126                         initialize: function (latlngs, options) {
5127                                 this._layers = {};
5128                                 this._options = options;
5129                                 this.setLatLngs(latlngs);
5130                         },
5131
5132                         setLatLngs: function (latlngs) {
5133                                 var i = 0,
5134                                     len = latlngs.length;
5135
5136                                 this.eachLayer(function (layer) {
5137                                         if (i < len) {
5138                                                 layer.setLatLngs(latlngs[i++]);
5139                                         } else {
5140                                                 this.removeLayer(layer);
5141                                         }
5142                                 }, this);
5143
5144                                 while (i < len) {
5145                                         this.addLayer(new Klass(latlngs[i++], this._options));
5146                                 }
5147
5148                                 return this;
5149                         }
5150                 });
5151         }
5152
5153         L.MultiPolyline = createMulti(L.Polyline);
5154         L.MultiPolygon = createMulti(L.Polygon);
5155
5156         L.multiPolyline = function (latlngs, options) {
5157                 return new L.MultiPolyline(latlngs, options);
5158         };
5159
5160         L.multiPolygon = function (latlngs, options) {
5161                 return new L.MultiPolygon(latlngs, options);
5162         };
5163 }());
5164
5165
5166 /*
5167  * L.Rectangle extends Polygon and creates a rectangle when passed a LatLngBounds object.
5168  */
5169
5170 L.Rectangle = L.Polygon.extend({
5171         initialize: function (latLngBounds, options) {
5172                 L.Polygon.prototype.initialize.call(this, this._boundsToLatLngs(latLngBounds), options);
5173         },
5174
5175         setBounds: function (latLngBounds) {
5176                 this.setLatLngs(this._boundsToLatLngs(latLngBounds));
5177         },
5178
5179         _boundsToLatLngs: function (latLngBounds) {
5180                 latLngBounds = L.latLngBounds(latLngBounds);
5181                 return [
5182                         latLngBounds.getSouthWest(),
5183                         latLngBounds.getNorthWest(),
5184                         latLngBounds.getNorthEast(),
5185                         latLngBounds.getSouthEast()
5186                 ];
5187         }
5188 });
5189
5190 L.rectangle = function (latLngBounds, options) {
5191         return new L.Rectangle(latLngBounds, options);
5192 };
5193
5194
5195 /*
5196  * L.Circle is a circle overlay (with a certain radius in meters).
5197  */
5198
5199 L.Circle = L.Path.extend({
5200         initialize: function (latlng, radius, options) {
5201                 L.Path.prototype.initialize.call(this, options);
5202
5203                 this._latlng = L.latLng(latlng);
5204                 this._mRadius = radius;
5205         },
5206
5207         options: {
5208                 fill: true
5209         },
5210
5211         setLatLng: function (latlng) {
5212                 this._latlng = L.latLng(latlng);
5213                 return this.redraw();
5214         },
5215
5216         setRadius: function (radius) {
5217                 this._mRadius = radius;
5218                 return this.redraw();
5219         },
5220
5221         projectLatlngs: function () {
5222                 var lngRadius = this._getLngRadius(),
5223                     latlng2 = new L.LatLng(this._latlng.lat, this._latlng.lng - lngRadius),
5224                     point2 = this._map.latLngToLayerPoint(latlng2);
5225
5226                 this._point = this._map.latLngToLayerPoint(this._latlng);
5227                 this._radius = Math.max(Math.round(this._point.x - point2.x), 1);
5228         },
5229
5230         getBounds: function () {
5231                 var lngRadius = this._getLngRadius(),
5232                     latRadius = (this._mRadius / 40075017) * 360,
5233                     latlng = this._latlng,
5234                     sw = new L.LatLng(latlng.lat - latRadius, latlng.lng - lngRadius),
5235                     ne = new L.LatLng(latlng.lat + latRadius, latlng.lng + lngRadius);
5236
5237                 return new L.LatLngBounds(sw, ne);
5238         },
5239
5240         getLatLng: function () {
5241                 return this._latlng;
5242         },
5243
5244         getPathString: function () {
5245                 var p = this._point,
5246                     r = this._radius;
5247
5248                 if (this._checkIfEmpty()) {
5249                         return '';
5250                 }
5251
5252                 if (L.Browser.svg) {
5253                         return "M" + p.x + "," + (p.y - r) +
5254                                "A" + r + "," + r + ",0,1,1," +
5255                                (p.x - 0.1) + "," + (p.y - r) + " z";
5256                 } else {
5257                         p._round();
5258                         r = Math.round(r);
5259                         return "AL " + p.x + "," + p.y + " " + r + "," + r + " 0," + (65535 * 360);
5260                 }
5261         },
5262
5263         getRadius: function () {
5264                 return this._mRadius;
5265         },
5266
5267         // TODO Earth hardcoded, move into projection code!
5268
5269         _getLatRadius: function () {
5270                 return (this._mRadius / 40075017) * 360;
5271         },
5272
5273         _getLngRadius: function () {
5274                 return this._getLatRadius() / Math.cos(L.LatLng.DEG_TO_RAD * this._latlng.lat);
5275         },
5276
5277         _checkIfEmpty: function () {
5278                 if (!this._map) {
5279                         return false;
5280                 }
5281                 var vp = this._map._pathViewport,
5282                     r = this._radius,
5283                     p = this._point;
5284
5285                 return p.x - r > vp.max.x || p.y - r > vp.max.y ||
5286                        p.x + r < vp.min.x || p.y + r < vp.min.y;
5287         }
5288 });
5289
5290 L.circle = function (latlng, radius, options) {
5291         return new L.Circle(latlng, radius, options);
5292 };
5293
5294
5295 /*
5296  * L.CircleMarker is a circle overlay with a permanent pixel radius.
5297  */
5298
5299 L.CircleMarker = L.Circle.extend({
5300         options: {
5301                 radius: 10,
5302                 weight: 2
5303         },
5304
5305         initialize: function (latlng, options) {
5306                 L.Circle.prototype.initialize.call(this, latlng, null, options);
5307                 this._radius = this.options.radius;
5308         },
5309
5310         projectLatlngs: function () {
5311                 this._point = this._map.latLngToLayerPoint(this._latlng);
5312         },
5313
5314         _updateStyle : function () {
5315                 L.Circle.prototype._updateStyle.call(this);
5316                 this.setRadius(this.options.radius);
5317         },
5318
5319         setRadius: function (radius) {
5320                 this._radius = radius;
5321                 return this.redraw();
5322         }
5323 });
5324
5325 L.circleMarker = function (latlng, options) {
5326         return new L.CircleMarker(latlng, options);
5327 };
5328
5329
5330 /*
5331  * Extends L.Polyline to be able to manually detect clicks on Canvas-rendered polylines.
5332  */
5333
5334 L.Polyline.include(!L.Path.CANVAS ? {} : {
5335         _containsPoint: function (p, closed) {
5336                 var i, j, k, len, len2, dist, part,
5337                     w = this.options.weight / 2;
5338
5339                 if (L.Browser.touch) {
5340                         w += 10; // polyline click tolerance on touch devices
5341                 }
5342
5343                 for (i = 0, len = this._parts.length; i < len; i++) {
5344                         part = this._parts[i];
5345                         for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
5346                                 if (!closed && (j === 0)) {
5347                                         continue;
5348                                 }
5349
5350                                 dist = L.LineUtil.pointToSegmentDistance(p, part[k], part[j]);
5351
5352                                 if (dist <= w) {
5353                                         return true;
5354                                 }
5355                         }
5356                 }
5357                 return false;
5358         }
5359 });
5360
5361
5362 /*
5363  * Extends L.Polygon to be able to manually detect clicks on Canvas-rendered polygons.
5364  */
5365
5366 L.Polygon.include(!L.Path.CANVAS ? {} : {
5367         _containsPoint: function (p) {
5368                 var inside = false,
5369                     part, p1, p2,
5370                     i, j, k,
5371                     len, len2;
5372
5373                 // TODO optimization: check if within bounds first
5374
5375                 if (L.Polyline.prototype._containsPoint.call(this, p, true)) {
5376                         // click on polygon border
5377                         return true;
5378                 }
5379
5380                 // ray casting algorithm for detecting if point is in polygon
5381
5382                 for (i = 0, len = this._parts.length; i < len; i++) {
5383                         part = this._parts[i];
5384
5385                         for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
5386                                 p1 = part[j];
5387                                 p2 = part[k];
5388
5389                                 if (((p1.y > p.y) !== (p2.y > p.y)) &&
5390                                                 (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
5391                                         inside = !inside;
5392                                 }
5393                         }
5394                 }
5395
5396                 return inside;
5397         }
5398 });
5399
5400
5401 /*
5402  * Extends L.Circle with Canvas-specific code.
5403  */
5404
5405 L.Circle.include(!L.Path.CANVAS ? {} : {
5406         _drawPath: function () {
5407                 var p = this._point;
5408                 this._ctx.beginPath();
5409                 this._ctx.arc(p.x, p.y, this._radius, 0, Math.PI * 2, false);
5410         },
5411
5412         _containsPoint: function (p) {
5413                 var center = this._point,
5414                     w2 = this.options.stroke ? this.options.weight / 2 : 0;
5415
5416                 return (p.distanceTo(center) <= this._radius + w2);
5417         }
5418 });
5419
5420
5421 /*
5422  * L.GeoJSON turns any GeoJSON data into a Leaflet layer.
5423  */
5424
5425 L.GeoJSON = L.FeatureGroup.extend({
5426
5427         initialize: function (geojson, options) {
5428                 L.setOptions(this, options);
5429
5430                 this._layers = {};
5431
5432                 if (geojson) {
5433                         this.addData(geojson);
5434                 }
5435         },
5436
5437         addData: function (geojson) {
5438                 var features = L.Util.isArray(geojson) ? geojson : geojson.features,
5439                     i, len;
5440
5441                 if (features) {
5442                         for (i = 0, len = features.length; i < len; i++) {
5443                                 // Only add this if geometry or geometries are set and not null
5444                                 if (features[i].geometries || features[i].geometry) {
5445                                         this.addData(features[i]);
5446                                 }
5447                         }
5448                         return this;
5449                 }
5450
5451                 var options = this.options;
5452
5453                 if (options.filter && !options.filter(geojson)) { return; }
5454
5455                 var layer = L.GeoJSON.geometryToLayer(geojson, options.pointToLayer);
5456                 layer.feature = geojson;
5457
5458                 layer.defaultOptions = layer.options;
5459                 this.resetStyle(layer);
5460
5461                 if (options.onEachFeature) {
5462                         options.onEachFeature(geojson, layer);
5463                 }
5464
5465                 return this.addLayer(layer);
5466         },
5467
5468         resetStyle: function (layer) {
5469                 var style = this.options.style;
5470                 if (style) {
5471                         // reset any custom styles
5472                         L.Util.extend(layer.options, layer.defaultOptions);
5473
5474                         this._setLayerStyle(layer, style);
5475                 }
5476         },
5477
5478         setStyle: function (style) {
5479                 this.eachLayer(function (layer) {
5480                         this._setLayerStyle(layer, style);
5481                 }, this);
5482         },
5483
5484         _setLayerStyle: function (layer, style) {
5485                 if (typeof style === 'function') {
5486                         style = style(layer.feature);
5487                 }
5488                 if (layer.setStyle) {
5489                         layer.setStyle(style);
5490                 }
5491         }
5492 });
5493
5494 L.extend(L.GeoJSON, {
5495         geometryToLayer: function (geojson, pointToLayer) {
5496                 var geometry = geojson.type === 'Feature' ? geojson.geometry : geojson,
5497                     coords = geometry.coordinates,
5498                     layers = [],
5499                     latlng, latlngs, i, len, layer;
5500
5501                 switch (geometry.type) {
5502                 case 'Point':
5503                         latlng = this.coordsToLatLng(coords);
5504                         return pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
5505
5506                 case 'MultiPoint':
5507                         for (i = 0, len = coords.length; i < len; i++) {
5508                                 latlng = this.coordsToLatLng(coords[i]);
5509                                 layer = pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
5510                                 layers.push(layer);
5511                         }
5512                         return new L.FeatureGroup(layers);
5513
5514                 case 'LineString':
5515                         latlngs = this.coordsToLatLngs(coords);
5516                         return new L.Polyline(latlngs);
5517
5518                 case 'Polygon':
5519                         latlngs = this.coordsToLatLngs(coords, 1);
5520                         return new L.Polygon(latlngs);
5521
5522                 case 'MultiLineString':
5523                         latlngs = this.coordsToLatLngs(coords, 1);
5524                         return new L.MultiPolyline(latlngs);
5525
5526                 case 'MultiPolygon':
5527                         latlngs = this.coordsToLatLngs(coords, 2);
5528                         return new L.MultiPolygon(latlngs);
5529
5530                 case 'GeometryCollection':
5531                         for (i = 0, len = geometry.geometries.length; i < len; i++) {
5532                                 layer = this.geometryToLayer({
5533                                         geometry: geometry.geometries[i],
5534                                         type: 'Feature',
5535                                         properties: geojson.properties
5536                                 }, pointToLayer);
5537                                 layers.push(layer);
5538                         }
5539                         return new L.FeatureGroup(layers);
5540
5541                 default:
5542                         throw new Error('Invalid GeoJSON object.');
5543                 }
5544         },
5545
5546         coordsToLatLng: function (coords, reverse) { // (Array, Boolean) -> LatLng
5547                 var lat = parseFloat(coords[reverse ? 0 : 1]),
5548                     lng = parseFloat(coords[reverse ? 1 : 0]);
5549
5550                 return new L.LatLng(lat, lng);
5551         },
5552
5553         coordsToLatLngs: function (coords, levelsDeep, reverse) { // (Array, Number, Boolean) -> Array
5554                 var latlng,
5555                     latlngs = [],
5556                     i, len;
5557
5558                 for (i = 0, len = coords.length; i < len; i++) {
5559                         latlng = levelsDeep ?
5560                                 this.coordsToLatLngs(coords[i], levelsDeep - 1, reverse) :
5561                                 this.coordsToLatLng(coords[i], reverse);
5562
5563                         latlngs.push(latlng);
5564                 }
5565
5566                 return latlngs;
5567         }
5568 });
5569
5570 L.geoJson = function (geojson, options) {
5571         return new L.GeoJSON(geojson, options);
5572 };
5573
5574
5575 /*
5576  * L.DomEvent contains functions for working with DOM events.
5577  */
5578
5579 L.DomEvent = {
5580         /* inspired by John Resig, Dean Edwards and YUI addEvent implementations */
5581         addListener: function (obj, type, fn, context) { // (HTMLElement, String, Function[, Object])
5582
5583                 var id = L.stamp(fn),
5584                     key = '_leaflet_' + type + id,
5585                     handler, originalHandler, newType;
5586
5587                 if (obj[key]) { return this; }
5588
5589                 handler = function (e) {
5590                         return fn.call(context || obj, e || L.DomEvent._getEvent());
5591                 };
5592
5593                 if (L.Browser.msTouch && type.indexOf('touch') === 0) {
5594                         return this.addMsTouchListener(obj, type, handler, id);
5595                 }
5596                 if (L.Browser.touch && (type === 'dblclick') && this.addDoubleTapListener) {
5597                         this.addDoubleTapListener(obj, handler, id);
5598                 }
5599
5600                 if ('addEventListener' in obj) {
5601
5602                         if (type === 'mousewheel') {
5603                                 obj.addEventListener('DOMMouseScroll', handler, false);
5604                                 obj.addEventListener(type, handler, false);
5605
5606                         } else if ((type === 'mouseenter') || (type === 'mouseleave')) {
5607
5608                                 originalHandler = handler;
5609                                 newType = (type === 'mouseenter' ? 'mouseover' : 'mouseout');
5610
5611                                 handler = function (e) {
5612                                         if (!L.DomEvent._checkMouse(obj, e)) { return; }
5613                                         return originalHandler(e);
5614                                 };
5615
5616                                 obj.addEventListener(newType, handler, false);
5617
5618                         } else {
5619                                 obj.addEventListener(type, handler, false);
5620                         }
5621
5622                 } else if ('attachEvent' in obj) {
5623                         obj.attachEvent("on" + type, handler);
5624                 }
5625
5626                 obj[key] = handler;
5627
5628                 return this;
5629         },
5630
5631         removeListener: function (obj, type, fn) {  // (HTMLElement, String, Function)
5632
5633                 var id = L.stamp(fn),
5634                     key = '_leaflet_' + type + id,
5635                     handler = obj[key];
5636
5637                 if (!handler) { return; }
5638
5639                 if (L.Browser.msTouch && type.indexOf('touch') === 0) {
5640                         this.removeMsTouchListener(obj, type, id);
5641                 } else if (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) {
5642                         this.removeDoubleTapListener(obj, id);
5643
5644                 } else if ('removeEventListener' in obj) {
5645
5646                         if (type === 'mousewheel') {
5647                                 obj.removeEventListener('DOMMouseScroll', handler, false);
5648                                 obj.removeEventListener(type, handler, false);
5649
5650                         } else if ((type === 'mouseenter') || (type === 'mouseleave')) {
5651                                 obj.removeEventListener((type === 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false);
5652                         } else {
5653                                 obj.removeEventListener(type, handler, false);
5654                         }
5655                 } else if ('detachEvent' in obj) {
5656                         obj.detachEvent("on" + type, handler);
5657                 }
5658
5659                 obj[key] = null;
5660
5661                 return this;
5662         },
5663
5664         stopPropagation: function (e) {
5665
5666                 if (e.stopPropagation) {
5667                         e.stopPropagation();
5668                 } else {
5669                         e.cancelBubble = true;
5670                 }
5671                 return this;
5672         },
5673
5674         disableClickPropagation: function (el) {
5675
5676                 var stop = L.DomEvent.stopPropagation;
5677
5678                 for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
5679                         L.DomEvent.addListener(el, L.Draggable.START[i], stop);
5680                 }
5681
5682                 return L.DomEvent
5683                         .addListener(el, 'click', stop)
5684                         .addListener(el, 'dblclick', stop);
5685         },
5686
5687         preventDefault: function (e) {
5688
5689                 if (e.preventDefault) {
5690                         e.preventDefault();
5691                 } else {
5692                         e.returnValue = false;
5693                 }
5694                 return this;
5695         },
5696
5697         stop: function (e) {
5698                 return L.DomEvent.preventDefault(e).stopPropagation(e);
5699         },
5700
5701         getMousePosition: function (e, container) {
5702
5703                 var body = document.body,
5704                     docEl = document.documentElement,
5705                     x = e.pageX ? e.pageX : e.clientX + body.scrollLeft + docEl.scrollLeft,
5706                     y = e.pageY ? e.pageY : e.clientY + body.scrollTop + docEl.scrollTop,
5707                     pos = new L.Point(x, y);
5708
5709                 return (container ? pos._subtract(L.DomUtil.getViewportOffset(container)) : pos);
5710         },
5711
5712         getWheelDelta: function (e) {
5713
5714                 var delta = 0;
5715
5716                 if (e.wheelDelta) {
5717                         delta = e.wheelDelta / 120;
5718                 }
5719                 if (e.detail) {
5720                         delta = -e.detail / 3;
5721                 }
5722                 return delta;
5723         },
5724
5725         // check if element really left/entered the event target (for mouseenter/mouseleave)
5726         _checkMouse: function (el, e) {
5727
5728                 var related = e.relatedTarget;
5729
5730                 if (!related) { return true; }
5731
5732                 try {
5733                         while (related && (related !== el)) {
5734                                 related = related.parentNode;
5735                         }
5736                 } catch (err) {
5737                         return false;
5738                 }
5739                 return (related !== el);
5740         },
5741
5742         _getEvent: function () { // evil magic for IE
5743                 /*jshint noarg:false */
5744                 var e = window.event;
5745                 if (!e) {
5746                         var caller = arguments.callee.caller;
5747                         while (caller) {
5748                                 e = caller['arguments'][0];
5749                                 if (e && window.Event === e.constructor) {
5750                                         break;
5751                                 }
5752                                 caller = caller.caller;
5753                         }
5754                 }
5755                 return e;
5756         }
5757 };
5758
5759 L.DomEvent.on = L.DomEvent.addListener;
5760 L.DomEvent.off = L.DomEvent.removeListener;
5761
5762
5763 /*
5764  * L.Draggable allows you to add dragging capabilities to any element. Supports mobile devices too.
5765  */
5766
5767 L.Draggable = L.Class.extend({
5768         includes: L.Mixin.Events,
5769
5770         statics: {
5771                 START: L.Browser.touch ? ['touchstart', 'mousedown'] : ['mousedown'],
5772                 END: {
5773                         mousedown: 'mouseup',
5774                         touchstart: 'touchend',
5775                         MSPointerDown: 'touchend'
5776                 },
5777                 MOVE: {
5778                         mousedown: 'mousemove',
5779                         touchstart: 'touchmove',
5780                         MSPointerDown: 'touchmove'
5781                 },
5782                 TAP_TOLERANCE: 15
5783         },
5784
5785         initialize: function (element, dragStartTarget, longPress) {
5786                 this._element = element;
5787                 this._dragStartTarget = dragStartTarget || element;
5788                 this._longPress = longPress && !L.Browser.msTouch;
5789         },
5790
5791         enable: function () {
5792                 if (this._enabled) { return; }
5793
5794                 for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
5795                         L.DomEvent.on(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
5796                 }
5797                 this._enabled = true;
5798         },
5799
5800         disable: function () {
5801                 if (!this._enabled) { return; }
5802
5803                 for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
5804                         L.DomEvent.off(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
5805                 }
5806                 this._enabled = false;
5807                 this._moved = false;
5808         },
5809
5810         _onDown: function (e) {
5811                 if ((!L.Browser.touch && e.shiftKey) ||
5812                     ((e.which !== 1) && (e.button !== 1) && !e.touches)) { return; }
5813
5814                 L.DomEvent.preventDefault(e);
5815                 L.DomEvent.stopPropagation(e);
5816
5817                 if (L.Draggable._disabled) { return; }
5818
5819                 this._simulateClick = true;
5820
5821                 if (e.touches && e.touches.length > 1) {
5822                         this._simulateClick = false;
5823                         clearTimeout(this._longPressTimeout);
5824                         return;
5825                 }
5826
5827                 var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
5828                     el = first.target;
5829
5830                 if (L.Browser.touch && el.tagName.toLowerCase() === 'a') {
5831                         L.DomUtil.addClass(el, 'leaflet-active');
5832                 }
5833
5834                 this._moved = false;
5835                 if (this._moving) { return; }
5836
5837                 this._startPoint = new L.Point(first.clientX, first.clientY);
5838                 this._startPos = this._newPos = L.DomUtil.getPosition(this._element);
5839
5840                 //Touch contextmenu event emulation
5841                 if (e.touches && e.touches.length === 1 && L.Browser.touch && this._longPress) {
5842                         this._longPressTimeout = setTimeout(L.bind(function () {
5843                                 var dist = (this._newPos && this._newPos.distanceTo(this._startPos)) || 0;
5844
5845                                 if (dist < L.Draggable.TAP_TOLERANCE) {
5846                                         this._simulateClick = false;
5847                                         this._onUp();
5848                                         this._simulateEvent('contextmenu', first);
5849                                 }
5850                         }, this), 1000);
5851                 }
5852
5853                 L.DomEvent.on(document, L.Draggable.MOVE[e.type], this._onMove, this);
5854                 L.DomEvent.on(document, L.Draggable.END[e.type], this._onUp, this);
5855         },
5856
5857         _onMove: function (e) {
5858                 if (e.touches && e.touches.length > 1) { return; }
5859
5860                 var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
5861                     newPoint = new L.Point(first.clientX, first.clientY),
5862                     diffVec = newPoint.subtract(this._startPoint);
5863
5864                 if (!diffVec.x && !diffVec.y) { return; }
5865
5866                 L.DomEvent.preventDefault(e);
5867
5868                 if (!this._moved) {
5869                         this.fire('dragstart');
5870                         this._moved = true;
5871
5872                         this._startPos = L.DomUtil.getPosition(this._element).subtract(diffVec);
5873
5874                         if (!L.Browser.touch) {
5875                                 L.DomUtil.disableTextSelection();
5876                                 this._setMovingCursor();
5877                         }
5878                 }
5879
5880                 this._newPos = this._startPos.add(diffVec);
5881                 this._moving = true;
5882
5883                 L.Util.cancelAnimFrame(this._animRequest);
5884                 this._animRequest = L.Util.requestAnimFrame(this._updatePosition, this, true, this._dragStartTarget);
5885         },
5886
5887         _updatePosition: function () {
5888                 this.fire('predrag');
5889                 L.DomUtil.setPosition(this._element, this._newPos);
5890                 this.fire('drag');
5891         },
5892
5893         _onUp: function (e) {
5894                 var simulateClickTouch;
5895                 clearTimeout(this._longPressTimeout);
5896                 if (this._simulateClick && e.changedTouches) {
5897                         var first = e.changedTouches[0],
5898                             el = first.target,
5899                             dist = (this._newPos && this._newPos.distanceTo(this._startPos)) || 0;
5900
5901                         if (el.tagName.toLowerCase() === 'a') {
5902                                 L.DomUtil.removeClass(el, 'leaflet-active');
5903                         }
5904
5905                         if (dist < L.Draggable.TAP_TOLERANCE) {
5906                                 simulateClickTouch = first;
5907                         }
5908                 }
5909
5910                 if (!L.Browser.touch) {
5911                         L.DomUtil.enableTextSelection();
5912                         this._restoreCursor();
5913                 }
5914
5915                 for (var i in L.Draggable.MOVE) {
5916                         if (L.Draggable.MOVE.hasOwnProperty(i)) {
5917                                 L.DomEvent.off(document, L.Draggable.MOVE[i], this._onMove);
5918                                 L.DomEvent.off(document, L.Draggable.END[i], this._onUp);
5919                         }
5920                 }
5921
5922                 if (this._moved) {
5923                         // ensure drag is not fired after dragend
5924                         L.Util.cancelAnimFrame(this._animRequest);
5925
5926                         this.fire('dragend');
5927                 }
5928                 this._moving = false;
5929
5930                 if (simulateClickTouch) {
5931                         this._moved = false;
5932                         this._simulateEvent('click', simulateClickTouch);
5933                 }
5934         },
5935
5936         _setMovingCursor: function () {
5937                 L.DomUtil.addClass(document.body, 'leaflet-dragging');
5938         },
5939
5940         _restoreCursor: function () {
5941                 L.DomUtil.removeClass(document.body, 'leaflet-dragging');
5942         },
5943
5944         _simulateEvent: function (type, e) {
5945                 var simulatedEvent = document.createEvent('MouseEvents');
5946
5947                 simulatedEvent.initMouseEvent(
5948                         type, true, true, window, 1,
5949                         e.screenX, e.screenY,
5950                         e.clientX, e.clientY,
5951                         false, false, false, false, 0, null);
5952
5953                 e.target.dispatchEvent(simulatedEvent);
5954         }
5955 });
5956
5957
5958 /*
5959         L.Handler is a base class for handler classes that are used internally to inject
5960         interaction features like dragging to classes like Map and Marker.
5961 */
5962
5963 L.Handler = L.Class.extend({
5964         initialize: function (map) {
5965                 this._map = map;
5966         },
5967
5968         enable: function () {
5969                 if (this._enabled) { return; }
5970
5971                 this._enabled = true;
5972                 this.addHooks();
5973         },
5974
5975         disable: function () {
5976                 if (!this._enabled) { return; }
5977
5978                 this._enabled = false;
5979                 this.removeHooks();
5980         },
5981
5982         enabled: function () {
5983                 return !!this._enabled;
5984         }
5985 });
5986
5987
5988 /*
5989  * L.Handler.MapDrag is used to make the map draggable (with panning inertia), enabled by default.
5990  */
5991
5992 L.Map.mergeOptions({
5993         dragging: true,
5994
5995         inertia: !L.Browser.android23,
5996         inertiaDeceleration: 3400, // px/s^2
5997         inertiaMaxSpeed: Infinity, // px/s
5998         inertiaThreshold: L.Browser.touch ? 32 : 18, // ms
5999         easeLinearity: 0.25,
6000
6001         longPress: true,
6002
6003         // TODO refactor, move to CRS
6004         worldCopyJump: false
6005 });
6006
6007 L.Map.Drag = L.Handler.extend({
6008         addHooks: function () {
6009                 if (!this._draggable) {
6010                         var map = this._map;
6011
6012                         this._draggable = new L.Draggable(map._mapPane, map._container, map.options.longPress);
6013
6014                         this._draggable.on({
6015                                 'dragstart': this._onDragStart,
6016                                 'drag': this._onDrag,
6017                                 'dragend': this._onDragEnd
6018                         }, this);
6019
6020                         if (map.options.worldCopyJump) {
6021                                 this._draggable.on('predrag', this._onPreDrag, this);
6022                                 map.on('viewreset', this._onViewReset, this);
6023                         }
6024                 }
6025                 this._draggable.enable();
6026         },
6027
6028         removeHooks: function () {
6029                 this._draggable.disable();
6030         },
6031
6032         moved: function () {
6033                 return this._draggable && this._draggable._moved;
6034         },
6035
6036         _onDragStart: function () {
6037                 var map = this._map;
6038
6039                 if (map._panAnim) {
6040                         map._panAnim.stop();
6041                 }
6042
6043                 map
6044                     .fire('movestart')
6045                     .fire('dragstart');
6046
6047                 if (map.options.inertia) {
6048                         this._positions = [];
6049                         this._times = [];
6050                 }
6051         },
6052
6053         _onDrag: function () {
6054                 if (this._map.options.inertia) {
6055                         var time = this._lastTime = +new Date(),
6056                             pos = this._lastPos = this._draggable._newPos;
6057
6058                         this._positions.push(pos);
6059                         this._times.push(time);
6060
6061                         if (time - this._times[0] > 200) {
6062                                 this._positions.shift();
6063                                 this._times.shift();
6064                         }
6065                 }
6066
6067                 this._map
6068                     .fire('move')
6069                     .fire('drag');
6070         },
6071
6072         _onViewReset: function () {
6073                 // TODO fix hardcoded Earth values
6074                 var pxCenter = this._map.getSize()._divideBy(2),
6075                     pxWorldCenter = this._map.latLngToLayerPoint(new L.LatLng(0, 0));
6076
6077                 this._initialWorldOffset = pxWorldCenter.subtract(pxCenter).x;
6078                 this._worldWidth = this._map.project(new L.LatLng(0, 180)).x;
6079         },
6080
6081         _onPreDrag: function () {
6082                 // TODO refactor to be able to adjust map pane position after zoom
6083                 var worldWidth = this._worldWidth,
6084                     halfWidth = Math.round(worldWidth / 2),
6085                     dx = this._initialWorldOffset,
6086                     x = this._draggable._newPos.x,
6087                     newX1 = (x - halfWidth + dx) % worldWidth + halfWidth - dx,
6088                     newX2 = (x + halfWidth + dx) % worldWidth - halfWidth - dx,
6089                     newX = Math.abs(newX1 + dx) < Math.abs(newX2 + dx) ? newX1 : newX2;
6090
6091                 this._draggable._newPos.x = newX;
6092         },
6093
6094         _onDragEnd: function () {
6095                 var map = this._map,
6096                     options = map.options,
6097                     delay = +new Date() - this._lastTime,
6098
6099                     noInertia = !options.inertia || delay > options.inertiaThreshold || !this._positions[0];
6100
6101                 if (noInertia) {
6102                         map.fire('moveend');
6103
6104                 } else {
6105
6106                         var direction = this._lastPos.subtract(this._positions[0]),
6107                             duration = (this._lastTime + delay - this._times[0]) / 1000,
6108                             ease = options.easeLinearity,
6109
6110                             speedVector = direction.multiplyBy(ease / duration),
6111                             speed = speedVector.distanceTo(new L.Point(0, 0)),
6112
6113                             limitedSpeed = Math.min(options.inertiaMaxSpeed, speed),
6114                             limitedSpeedVector = speedVector.multiplyBy(limitedSpeed / speed),
6115
6116                             decelerationDuration = limitedSpeed / (options.inertiaDeceleration * ease),
6117                             offset = limitedSpeedVector.multiplyBy(-decelerationDuration / 2).round();
6118
6119                         L.Util.requestAnimFrame(function () {
6120                                 map.panBy(offset, decelerationDuration, ease);
6121                         });
6122                 }
6123
6124                 map.fire('dragend');
6125
6126                 if (options.maxBounds) {
6127                         // TODO predrag validation instead of animation
6128                         L.Util.requestAnimFrame(this._panInsideMaxBounds, map, true, map._container);
6129                 }
6130         },
6131
6132         _panInsideMaxBounds: function () {
6133                 this.panInsideBounds(this.options.maxBounds);
6134         }
6135 });
6136
6137 L.Map.addInitHook('addHandler', 'dragging', L.Map.Drag);
6138
6139
6140 /*
6141  * L.Handler.DoubleClickZoom is used to handle double-click zoom on the map, enabled by default.
6142  */
6143
6144 L.Map.mergeOptions({
6145         doubleClickZoom: true
6146 });
6147
6148 L.Map.DoubleClickZoom = L.Handler.extend({
6149         addHooks: function () {
6150                 this._map.on('dblclick', this._onDoubleClick);
6151         },
6152
6153         removeHooks: function () {
6154                 this._map.off('dblclick', this._onDoubleClick);
6155         },
6156
6157         _onDoubleClick: function (e) {
6158                 this.setView(e.latlng, this._zoom + 1);
6159         }
6160 });
6161
6162 L.Map.addInitHook('addHandler', 'doubleClickZoom', L.Map.DoubleClickZoom);
6163
6164
6165 /*
6166  * L.Handler.ScrollWheelZoom is used by L.Map to enable mouse scroll wheel zoom on the map.
6167  */
6168
6169 L.Map.mergeOptions({
6170         scrollWheelZoom: true
6171 });
6172
6173 L.Map.ScrollWheelZoom = L.Handler.extend({
6174         addHooks: function () {
6175                 L.DomEvent.on(this._map._container, 'mousewheel', this._onWheelScroll, this);
6176                 this._delta = 0;
6177         },
6178
6179         removeHooks: function () {
6180                 L.DomEvent.off(this._map._container, 'mousewheel', this._onWheelScroll);
6181         },
6182
6183         _onWheelScroll: function (e) {
6184                 var delta = L.DomEvent.getWheelDelta(e);
6185
6186                 this._delta += delta;
6187                 this._lastMousePos = this._map.mouseEventToContainerPoint(e);
6188
6189                 if (!this._startTime) {
6190                         this._startTime = +new Date();
6191                 }
6192
6193                 var left = Math.max(40 - (+new Date() - this._startTime), 0);
6194
6195                 clearTimeout(this._timer);
6196                 this._timer = setTimeout(L.bind(this._performZoom, this), left);
6197
6198                 L.DomEvent.preventDefault(e);
6199                 L.DomEvent.stopPropagation(e);
6200         },
6201
6202         _performZoom: function () {
6203                 var map = this._map,
6204                     delta = this._delta,
6205                     zoom = map.getZoom();
6206
6207                 delta = delta > 0 ? Math.ceil(delta) : Math.round(delta);
6208                 delta = Math.max(Math.min(delta, 4), -4);
6209                 delta = map._limitZoom(zoom + delta) - zoom;
6210
6211                 this._delta = 0;
6212
6213                 this._startTime = null;
6214
6215                 if (!delta) { return; }
6216
6217                 var newZoom = zoom + delta,
6218                     newCenter = this._getCenterForScrollWheelZoom(newZoom);
6219
6220                 map.setView(newCenter, newZoom);
6221         },
6222
6223         _getCenterForScrollWheelZoom: function (newZoom) {
6224                 var map = this._map,
6225                     scale = map.getZoomScale(newZoom),
6226                     viewHalf = map.getSize()._divideBy(2),
6227                     centerOffset = this._lastMousePos._subtract(viewHalf)._multiplyBy(1 - 1 / scale),
6228                     newCenterPoint = map._getTopLeftPoint()._add(viewHalf)._add(centerOffset);
6229
6230                 return map.unproject(newCenterPoint);
6231         }
6232 });
6233
6234 L.Map.addInitHook('addHandler', 'scrollWheelZoom', L.Map.ScrollWheelZoom);
6235
6236
6237 /*
6238  * Extends the event handling code with double tap support for mobile browsers.
6239  */
6240
6241 L.extend(L.DomEvent, {
6242
6243         _touchstart: L.Browser.msTouch ? 'MSPointerDown' : 'touchstart',
6244         _touchend: L.Browser.msTouch ? 'MSPointerUp' : 'touchend',
6245
6246         // inspired by Zepto touch code by Thomas Fuchs
6247         addDoubleTapListener: function (obj, handler, id) {
6248                 var last,
6249                     doubleTap = false,
6250                     delay = 250,
6251                     touch,
6252                     pre = '_leaflet_',
6253                     touchstart = this._touchstart,
6254                     touchend = this._touchend,
6255                     trackedTouches = [];
6256
6257                 function onTouchStart(e) {
6258                         var count;
6259                         if (L.Browser.msTouch) {
6260                                 trackedTouches.push(e.pointerId);
6261                                 count = trackedTouches.length;
6262                         } else {
6263                                 count = e.touches.length;
6264                         }
6265                         if (count > 1) {
6266                                 return;
6267                         }
6268
6269                         var now = Date.now(),
6270                                 delta = now - (last || now);
6271
6272                         touch = e.touches ? e.touches[0] : e;
6273                         doubleTap = (delta > 0 && delta <= delay);
6274                         last = now;
6275                 }
6276
6277                 function onTouchEnd(e) {
6278                         /*jshint forin:false */
6279                         if (L.Browser.msTouch) {
6280                                 var idx = trackedTouches.indexOf(e.pointerId);
6281                                 if (idx === -1) {
6282                                         return;
6283                                 }
6284                                 trackedTouches.splice(idx, 1);
6285                         }
6286
6287                         if (doubleTap) {
6288                                 if (L.Browser.msTouch) {
6289                                         //Work around .type being readonly with MSPointer* events
6290                                         var newTouch = { },
6291                                                 prop;
6292
6293                                         for (var i in touch) {
6294                                                 prop = touch[i];
6295                                                 if (typeof prop === 'function') {
6296                                                         newTouch[i] = prop.bind(touch);
6297                                                 } else {
6298                                                         newTouch[i] = prop;
6299                                                 }
6300                                         }
6301                                         touch = newTouch;
6302                                 }
6303                                 touch.type = 'dblclick';
6304                                 handler(touch);
6305                                 last = null;
6306                         }
6307                 }
6308                 obj[pre + touchstart + id] = onTouchStart;
6309                 obj[pre + touchend + id] = onTouchEnd;
6310
6311                 //On msTouch we need to listen on the document otherwise a drag starting on the map and moving off screen will not come through to us
6312                 // so we will lose track of how many touches are ongoing
6313                 var endElement = L.Browser.msTouch ? document.documentElement : obj;
6314
6315                 obj.addEventListener(touchstart, onTouchStart, false);
6316                 endElement.addEventListener(touchend, onTouchEnd, false);
6317                 if (L.Browser.msTouch) {
6318                         endElement.addEventListener('MSPointerCancel', onTouchEnd, false);
6319                 }
6320                 return this;
6321         },
6322
6323         removeDoubleTapListener: function (obj, id) {
6324                 var pre = '_leaflet_';
6325                 obj.removeEventListener(this._touchstart, obj[pre + this._touchstart + id], false);
6326                 (L.Browser.msTouch ? document.documentElement : obj).removeEventListener(this._touchend, obj[pre + this._touchend + id], false);
6327                 if (L.Browser.msTouch) {
6328                         document.documentElement.removeEventListener('MSPointerCancel', obj[pre + this._touchend + id], false);
6329                 }
6330                 return this;
6331         }
6332 });
6333
6334
6335 /*
6336  * Extends L.DomEvent to provide touch support for Internet Explorer and Windows-based devices.
6337  */
6338
6339 L.extend(L.DomEvent, {
6340
6341         _msTouches: [],
6342         _msDocumentListener: false,
6343
6344         // Provides a touch events wrapper for msPointer events.
6345         // Based on changes by veproza https://github.com/CloudMade/Leaflet/pull/1019
6346
6347         addMsTouchListener: function (obj, type, handler, id) {
6348
6349                 switch (type) {
6350                 case 'touchstart':
6351                         return this.addMsTouchListenerStart(obj, type, handler, id);
6352                 case 'touchend':
6353                         return this.addMsTouchListenerEnd(obj, type, handler, id);
6354                 case 'touchmove':
6355                         return this.addMsTouchListenerMove(obj, type, handler, id);
6356                 default:
6357                         throw 'Unknown touch event type';
6358                 }
6359         },
6360
6361         addMsTouchListenerStart: function (obj, type, handler, id) {
6362                 var pre = '_leaflet_',
6363                     touches = this._msTouches;
6364
6365                 var cb = function (e) {
6366
6367                         var alreadyInArray = false;
6368                         for (var i = 0; i < touches.length; i++) {
6369                                 if (touches[i].pointerId === e.pointerId) {
6370                                         alreadyInArray = true;
6371                                         break;
6372                                 }
6373                         }
6374                         if (!alreadyInArray) {
6375                                 touches.push(e);
6376                         }
6377
6378                         e.touches = touches.slice();
6379                         e.changedTouches = [e];
6380
6381                         handler(e);
6382                 };
6383
6384                 obj[pre + 'touchstart' + id] = cb;
6385                 obj.addEventListener('MSPointerDown', cb, false);
6386
6387                 // need to also listen for end events to keep the _msTouches list accurate
6388                 // this needs to be on the body and never go away
6389                 if (!this._msDocumentListener) {
6390                         var internalCb = function (e) {
6391                                 for (var i = 0; i < touches.length; i++) {
6392                                         if (touches[i].pointerId === e.pointerId) {
6393                                                 touches.splice(i, 1);
6394                                                 break;
6395                                         }
6396                                 }
6397                         };
6398                         //We listen on the documentElement as any drags that end by moving the touch off the screen get fired there
6399                         document.documentElement.addEventListener('MSPointerUp', internalCb, false);
6400                         document.documentElement.addEventListener('MSPointerCancel', internalCb, false);
6401
6402                         this._msDocumentListener = true;
6403                 }
6404
6405                 return this;
6406         },
6407
6408         addMsTouchListenerMove: function (obj, type, handler, id) {
6409                 var pre = '_leaflet_',
6410                     touches = this._msTouches;
6411
6412                 function cb(e) {
6413
6414                         // don't fire touch moves when mouse isn't down
6415                         if (e.pointerType === e.MSPOINTER_TYPE_MOUSE && e.buttons === 0) { return; }
6416
6417                         for (var i = 0; i < touches.length; i++) {
6418                                 if (touches[i].pointerId === e.pointerId) {
6419                                         touches[i] = e;
6420                                         break;
6421                                 }
6422                         }
6423
6424                         e.touches = touches.slice();
6425                         e.changedTouches = [e];
6426
6427                         handler(e);
6428                 }
6429
6430                 obj[pre + 'touchmove' + id] = cb;
6431                 obj.addEventListener('MSPointerMove', cb, false);
6432
6433                 return this;
6434         },
6435
6436         addMsTouchListenerEnd: function (obj, type, handler, id) {
6437                 var pre = '_leaflet_',
6438                     touches = this._msTouches;
6439
6440                 var cb = function (e) {
6441                         for (var i = 0; i < touches.length; i++) {
6442                                 if (touches[i].pointerId === e.pointerId) {
6443                                         touches.splice(i, 1);
6444                                         break;
6445                                 }
6446                         }
6447
6448                         e.touches = touches.slice();
6449                         e.changedTouches = [e];
6450
6451                         handler(e);
6452                 };
6453
6454                 obj[pre + 'touchend' + id] = cb;
6455                 obj.addEventListener('MSPointerUp', cb, false);
6456                 obj.addEventListener('MSPointerCancel', cb, false);
6457
6458                 return this;
6459         },
6460
6461         removeMsTouchListener: function (obj, type, id) {
6462                 var pre = '_leaflet_',
6463                     cb = obj[pre + type + id];
6464
6465                 switch (type) {
6466                 case 'touchstart':
6467                         obj.removeEventListener('MSPointerDown', cb, false);
6468                         break;
6469                 case 'touchmove':
6470                         obj.removeEventListener('MSPointerMove', cb, false);
6471                         break;
6472                 case 'touchend':
6473                         obj.removeEventListener('MSPointerUp', cb, false);
6474                         obj.removeEventListener('MSPointerCancel', cb, false);
6475                         break;
6476                 }
6477
6478                 return this;
6479         }
6480 });
6481
6482
6483 /*
6484  * L.Handler.TouchZoom is used by L.Map to add pinch zoom on supported mobile browsers.
6485  */
6486
6487 L.Map.mergeOptions({
6488         touchZoom: L.Browser.touch && !L.Browser.android23
6489 });
6490
6491 L.Map.TouchZoom = L.Handler.extend({
6492         addHooks: function () {
6493                 L.DomEvent.on(this._map._container, 'touchstart', this._onTouchStart, this);
6494         },
6495
6496         removeHooks: function () {
6497                 L.DomEvent.off(this._map._container, 'touchstart', this._onTouchStart, this);
6498         },
6499
6500         _onTouchStart: function (e) {
6501                 var map = this._map;
6502
6503                 if (!e.touches || e.touches.length !== 2 || map._animatingZoom || this._zooming) { return; }
6504
6505                 var p1 = map.mouseEventToLayerPoint(e.touches[0]),
6506                     p2 = map.mouseEventToLayerPoint(e.touches[1]),
6507                     viewCenter = map._getCenterLayerPoint();
6508
6509                 this._startCenter = p1.add(p2)._divideBy(2);
6510                 this._startDist = p1.distanceTo(p2);
6511
6512                 this._moved = false;
6513                 this._zooming = true;
6514
6515                 this._centerOffset = viewCenter.subtract(this._startCenter);
6516
6517                 if (map._panAnim) {
6518                         map._panAnim.stop();
6519                 }
6520
6521                 L.DomEvent
6522                     .on(document, 'touchmove', this._onTouchMove, this)
6523                     .on(document, 'touchend', this._onTouchEnd, this);
6524
6525                 L.DomEvent.preventDefault(e);
6526         },
6527
6528         _onTouchMove: function (e) {
6529                 if (!e.touches || e.touches.length !== 2) { return; }
6530
6531                 var map = this._map;
6532
6533                 var p1 = map.mouseEventToLayerPoint(e.touches[0]),
6534                     p2 = map.mouseEventToLayerPoint(e.touches[1]);
6535
6536                 this._scale = p1.distanceTo(p2) / this._startDist;
6537                 this._delta = p1._add(p2)._divideBy(2)._subtract(this._startCenter);
6538
6539                 if (this._scale === 1) { return; }
6540
6541                 if (!this._moved) {
6542                         L.DomUtil.addClass(map._mapPane, 'leaflet-zoom-anim leaflet-touching');
6543
6544                         map
6545                             .fire('movestart')
6546                             .fire('zoomstart')
6547                             ._prepareTileBg();
6548
6549                         this._moved = true;
6550                 }
6551
6552                 L.Util.cancelAnimFrame(this._animRequest);
6553                 this._animRequest = L.Util.requestAnimFrame(
6554                         this._updateOnMove, this, true, this._map._container);
6555
6556                 L.DomEvent.preventDefault(e);
6557         },
6558
6559         _updateOnMove: function () {
6560                 var map = this._map,
6561                     origin = this._getScaleOrigin(),
6562                     center = map.layerPointToLatLng(origin);
6563
6564                 map.fire('zoomanim', {
6565                         center: center,
6566                         zoom: map.getScaleZoom(this._scale)
6567                 });
6568
6569                 // Used 2 translates instead of transform-origin because of a very strange bug -
6570                 // it didn't count the origin on the first touch-zoom but worked correctly afterwards
6571
6572                 map._tileBg.style[L.DomUtil.TRANSFORM] =
6573                         L.DomUtil.getTranslateString(this._delta) + ' ' +
6574                         L.DomUtil.getScaleString(this._scale, this._startCenter);
6575         },
6576
6577         _onTouchEnd: function () {
6578                 if (!this._moved || !this._zooming) { return; }
6579
6580                 var map = this._map;
6581
6582                 this._zooming = false;
6583                 L.DomUtil.removeClass(map._mapPane, 'leaflet-touching');
6584
6585                 L.DomEvent
6586                     .off(document, 'touchmove', this._onTouchMove)
6587                     .off(document, 'touchend', this._onTouchEnd);
6588
6589                 var origin = this._getScaleOrigin(),
6590                     center = map.layerPointToLatLng(origin),
6591
6592                     oldZoom = map.getZoom(),
6593                     floatZoomDelta = map.getScaleZoom(this._scale) - oldZoom,
6594                     roundZoomDelta = (floatZoomDelta > 0 ?
6595                             Math.ceil(floatZoomDelta) : Math.floor(floatZoomDelta)),
6596
6597                     zoom = map._limitZoom(oldZoom + roundZoomDelta);
6598
6599                 map.fire('zoomanim', {
6600                         center: center,
6601                         zoom: zoom
6602                 });
6603
6604                 map._runAnimation(center, zoom, map.getZoomScale(zoom) / this._scale, origin, true);
6605         },
6606
6607         _getScaleOrigin: function () {
6608                 var centerOffset = this._centerOffset.subtract(this._delta).divideBy(this._scale);
6609                 return this._startCenter.add(centerOffset);
6610         }
6611 });
6612
6613 L.Map.addInitHook('addHandler', 'touchZoom', L.Map.TouchZoom);
6614
6615
6616 /*
6617  * L.Handler.ShiftDragZoom is used to add shift-drag zoom interaction to the map
6618   * (zoom to a selected bounding box), enabled by default.
6619  */
6620
6621 L.Map.mergeOptions({
6622         boxZoom: true
6623 });
6624
6625 L.Map.BoxZoom = L.Handler.extend({
6626         initialize: function (map) {
6627                 this._map = map;
6628                 this._container = map._container;
6629                 this._pane = map._panes.overlayPane;
6630         },
6631
6632         addHooks: function () {
6633                 L.DomEvent.on(this._container, 'mousedown', this._onMouseDown, this);
6634         },
6635
6636         removeHooks: function () {
6637                 L.DomEvent.off(this._container, 'mousedown', this._onMouseDown);
6638         },
6639
6640         _onMouseDown: function (e) {
6641                 if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; }
6642
6643                 L.DomUtil.disableTextSelection();
6644
6645                 this._startLayerPoint = this._map.mouseEventToLayerPoint(e);
6646
6647                 this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._pane);
6648                 L.DomUtil.setPosition(this._box, this._startLayerPoint);
6649
6650                 //TODO refactor: move cursor to styles
6651                 this._container.style.cursor = 'crosshair';
6652
6653                 L.DomEvent
6654                     .on(document, 'mousemove', this._onMouseMove, this)
6655                     .on(document, 'mouseup', this._onMouseUp, this)
6656                     .preventDefault(e);
6657
6658                 this._map.fire("boxzoomstart");
6659         },
6660
6661         _onMouseMove: function (e) {
6662                 var startPoint = this._startLayerPoint,
6663                     box = this._box,
6664
6665                     layerPoint = this._map.mouseEventToLayerPoint(e),
6666                     offset = layerPoint.subtract(startPoint),
6667
6668                     newPos = new L.Point(
6669                         Math.min(layerPoint.x, startPoint.x),
6670                         Math.min(layerPoint.y, startPoint.y));
6671
6672                 L.DomUtil.setPosition(box, newPos);
6673
6674                 // TODO refactor: remove hardcoded 4 pixels
6675                 box.style.width  = (Math.max(0, Math.abs(offset.x) - 4)) + 'px';
6676                 box.style.height = (Math.max(0, Math.abs(offset.y) - 4)) + 'px';
6677         },
6678
6679         _onMouseUp: function (e) {
6680                 this._pane.removeChild(this._box);
6681                 this._container.style.cursor = '';
6682
6683                 L.DomUtil.enableTextSelection();
6684
6685                 L.DomEvent
6686                     .off(document, 'mousemove', this._onMouseMove)
6687                     .off(document, 'mouseup', this._onMouseUp);
6688
6689                 var map = this._map,
6690                     layerPoint = map.mouseEventToLayerPoint(e);
6691
6692                 if (this._startLayerPoint.equals(layerPoint)) { return; }
6693
6694                 var bounds = new L.LatLngBounds(
6695                         map.layerPointToLatLng(this._startLayerPoint),
6696                         map.layerPointToLatLng(layerPoint));
6697
6698                 map.fitBounds(bounds);
6699
6700                 map.fire("boxzoomend", {
6701                         boxZoomBounds: bounds
6702                 });
6703         }
6704 });
6705
6706 L.Map.addInitHook('addHandler', 'boxZoom', L.Map.BoxZoom);
6707
6708
6709 /*
6710  * L.Map.Keyboard is handling keyboard interaction with the map, enabled by default.
6711  */
6712
6713 L.Map.mergeOptions({
6714         keyboard: true,
6715         keyboardPanOffset: 80,
6716         keyboardZoomOffset: 1
6717 });
6718
6719 L.Map.Keyboard = L.Handler.extend({
6720
6721         keyCodes: {
6722                 left:    [37],
6723                 right:   [39],
6724                 down:    [40],
6725                 up:      [38],
6726                 zoomIn:  [187, 107, 61],
6727                 zoomOut: [189, 109, 173]
6728         },
6729
6730         initialize: function (map) {
6731                 this._map = map;
6732
6733                 this._setPanOffset(map.options.keyboardPanOffset);
6734                 this._setZoomOffset(map.options.keyboardZoomOffset);
6735         },
6736
6737         addHooks: function () {
6738                 var container = this._map._container;
6739
6740                 // make the container focusable by tabbing
6741                 if (container.tabIndex === -1) {
6742                         container.tabIndex = "0";
6743                 }
6744
6745                 L.DomEvent
6746                     .on(container, 'focus', this._onFocus, this)
6747                     .on(container, 'blur', this._onBlur, this)
6748                     .on(container, 'mousedown', this._onMouseDown, this);
6749
6750                 this._map
6751                     .on('focus', this._addHooks, this)
6752                     .on('blur', this._removeHooks, this);
6753         },
6754
6755         removeHooks: function () {
6756                 this._removeHooks();
6757
6758                 var container = this._map._container;
6759
6760                 L.DomEvent
6761                     .off(container, 'focus', this._onFocus, this)
6762                     .off(container, 'blur', this._onBlur, this)
6763                     .off(container, 'mousedown', this._onMouseDown, this);
6764
6765                 this._map
6766                     .off('focus', this._addHooks, this)
6767                     .off('blur', this._removeHooks, this);
6768         },
6769
6770         _onMouseDown: function () {
6771                 if (!this._focused) {
6772                         this._map._container.focus();
6773                 }
6774         },
6775
6776         _onFocus: function () {
6777                 this._focused = true;
6778                 this._map.fire('focus');
6779         },
6780
6781         _onBlur: function () {
6782                 this._focused = false;
6783                 this._map.fire('blur');
6784         },
6785
6786         _setPanOffset: function (pan) {
6787                 var keys = this._panKeys = {},
6788                     codes = this.keyCodes,
6789                     i, len;
6790
6791                 for (i = 0, len = codes.left.length; i < len; i++) {
6792                         keys[codes.left[i]] = [-1 * pan, 0];
6793                 }
6794                 for (i = 0, len = codes.right.length; i < len; i++) {
6795                         keys[codes.right[i]] = [pan, 0];
6796                 }
6797                 for (i = 0, len = codes.down.length; i < len; i++) {
6798                         keys[codes.down[i]] = [0, pan];
6799                 }
6800                 for (i = 0, len = codes.up.length; i < len; i++) {
6801                         keys[codes.up[i]] = [0, -1 * pan];
6802                 }
6803         },
6804
6805         _setZoomOffset: function (zoom) {
6806                 var keys = this._zoomKeys = {},
6807                     codes = this.keyCodes,
6808                     i, len;
6809
6810                 for (i = 0, len = codes.zoomIn.length; i < len; i++) {
6811                         keys[codes.zoomIn[i]] = zoom;
6812                 }
6813                 for (i = 0, len = codes.zoomOut.length; i < len; i++) {
6814                         keys[codes.zoomOut[i]] = -zoom;
6815                 }
6816         },
6817
6818         _addHooks: function () {
6819                 L.DomEvent.on(document, 'keydown', this._onKeyDown, this);
6820         },
6821
6822         _removeHooks: function () {
6823                 L.DomEvent.off(document, 'keydown', this._onKeyDown, this);
6824         },
6825
6826         _onKeyDown: function (e) {
6827                 var key = e.keyCode,
6828                     map = this._map;
6829
6830                 if (this._panKeys.hasOwnProperty(key)) {
6831                         map.panBy(this._panKeys[key]);
6832
6833                         if (map.options.maxBounds) {
6834                                 map.panInsideBounds(map.options.maxBounds);
6835                         }
6836
6837                 } else if (this._zoomKeys.hasOwnProperty(key)) {
6838                         map.setZoom(map.getZoom() + this._zoomKeys[key]);
6839
6840                 } else {
6841                         return;
6842                 }
6843
6844                 L.DomEvent.stop(e);
6845         }
6846 });
6847
6848 L.Map.addInitHook('addHandler', 'keyboard', L.Map.Keyboard);
6849
6850
6851 /*
6852  * L.Handler.MarkerDrag is used internally by L.Marker to make the markers draggable.
6853  */
6854
6855 L.Handler.MarkerDrag = L.Handler.extend({
6856         initialize: function (marker) {
6857                 this._marker = marker;
6858         },
6859
6860         addHooks: function () {
6861                 var icon = this._marker._icon;
6862                 if (!this._draggable) {
6863                         this._draggable = new L.Draggable(icon, icon)
6864                             .on('dragstart', this._onDragStart, this)
6865                             .on('drag', this._onDrag, this)
6866                             .on('dragend', this._onDragEnd, this);
6867                 }
6868                 this._draggable.enable();
6869         },
6870
6871         removeHooks: function () {
6872                 this._draggable.disable();
6873         },
6874
6875         moved: function () {
6876                 return this._draggable && this._draggable._moved;
6877         },
6878
6879         _onDragStart: function () {
6880                 this._marker
6881                     .closePopup()
6882                     .fire('movestart')
6883                     .fire('dragstart');
6884         },
6885
6886         _onDrag: function () {
6887                 var marker = this._marker,
6888                     shadow = marker._shadow,
6889                     iconPos = L.DomUtil.getPosition(marker._icon),
6890                     latlng = marker._map.layerPointToLatLng(iconPos);
6891
6892                 // update shadow position
6893                 if (shadow) {
6894                         L.DomUtil.setPosition(shadow, iconPos);
6895                 }
6896
6897                 marker._latlng = latlng;
6898
6899                 marker
6900                     .fire('move', {latlng: latlng})
6901                     .fire('drag');
6902         },
6903
6904         _onDragEnd: function () {
6905                 this._marker
6906                     .fire('moveend')
6907                     .fire('dragend');
6908         }
6909 });
6910
6911
6912 /*
6913  * L.Handler.PolyEdit is an editing handler for polylines and polygons.
6914  */
6915
6916 L.Handler.PolyEdit = L.Handler.extend({
6917         options: {
6918                 icon: new L.DivIcon({
6919                         iconSize: new L.Point(8, 8),
6920                         className: 'leaflet-div-icon leaflet-editing-icon'
6921                 })
6922         },
6923
6924         initialize: function (poly, options) {
6925                 this._poly = poly;
6926                 L.setOptions(this, options);
6927         },
6928
6929         addHooks: function () {
6930                 if (this._poly._map) {
6931                         if (!this._markerGroup) {
6932                                 this._initMarkers();
6933                         }
6934                         this._poly._map.addLayer(this._markerGroup);
6935                 }
6936         },
6937
6938         removeHooks: function () {
6939                 if (this._poly._map) {
6940                         this._poly._map.removeLayer(this._markerGroup);
6941                         delete this._markerGroup;
6942                         delete this._markers;
6943                 }
6944         },
6945
6946         updateMarkers: function () {
6947                 this._markerGroup.clearLayers();
6948                 this._initMarkers();
6949         },
6950
6951         _initMarkers: function () {
6952                 if (!this._markerGroup) {
6953                         this._markerGroup = new L.LayerGroup();
6954                 }
6955                 this._markers = [];
6956
6957                 var latlngs = this._poly._latlngs,
6958                     i, j, len, marker;
6959
6960                 // TODO refactor holes implementation in Polygon to support it here
6961
6962                 for (i = 0, len = latlngs.length; i < len; i++) {
6963
6964                         marker = this._createMarker(latlngs[i], i);
6965                         marker.on('click', this._onMarkerClick, this);
6966                         this._markers.push(marker);
6967                 }
6968
6969                 var markerLeft, markerRight;
6970
6971                 for (i = 0, j = len - 1; i < len; j = i++) {
6972                         if (i === 0 && !(L.Polygon && (this._poly instanceof L.Polygon))) {
6973                                 continue;
6974                         }
6975
6976                         markerLeft = this._markers[j];
6977                         markerRight = this._markers[i];
6978
6979                         this._createMiddleMarker(markerLeft, markerRight);
6980                         this._updatePrevNext(markerLeft, markerRight);
6981                 }
6982         },
6983
6984         _createMarker: function (latlng, index) {
6985                 var marker = new L.Marker(latlng, {
6986                         draggable: true,
6987                         icon: this.options.icon
6988                 });
6989
6990                 marker._origLatLng = latlng;
6991                 marker._index = index;
6992
6993                 marker.on('drag', this._onMarkerDrag, this);
6994                 marker.on('dragend', this._fireEdit, this);
6995
6996                 this._markerGroup.addLayer(marker);
6997
6998                 return marker;
6999         },
7000
7001         _fireEdit: function () {
7002                 this._poly.fire('edit');
7003         },
7004
7005         _onMarkerDrag: function (e) {
7006                 var marker = e.target;
7007
7008                 L.extend(marker._origLatLng, marker._latlng);
7009
7010                 if (marker._middleLeft) {
7011                         marker._middleLeft.setLatLng(this._getMiddleLatLng(marker._prev, marker));
7012                 }
7013                 if (marker._middleRight) {
7014                         marker._middleRight.setLatLng(this._getMiddleLatLng(marker, marker._next));
7015                 }
7016
7017                 this._poly.redraw();
7018         },
7019
7020         _onMarkerClick: function (e) {
7021                 // we want to remove the marker on click, but if latlng count < 3, polyline would be invalid
7022                 if (this._poly._latlngs.length < 3) { return; }
7023
7024                 var marker = e.target,
7025                     i = marker._index;
7026
7027                 // remove the marker
7028                 this._markerGroup.removeLayer(marker);
7029                 this._markers.splice(i, 1);
7030                 this._poly.spliceLatLngs(i, 1);
7031                 this._updateIndexes(i, -1);
7032
7033                 // update prev/next links of adjacent markers
7034                 this._updatePrevNext(marker._prev, marker._next);
7035
7036                 // remove ghost markers near the removed marker
7037                 if (marker._middleLeft) {
7038                         this._markerGroup.removeLayer(marker._middleLeft);
7039                 }
7040                 if (marker._middleRight) {
7041                         this._markerGroup.removeLayer(marker._middleRight);
7042                 }
7043
7044                 // create a ghost marker in place of the removed one
7045                 if (marker._prev && marker._next) {
7046                         this._createMiddleMarker(marker._prev, marker._next);
7047
7048                 } else if (!marker._prev) {
7049                         marker._next._middleLeft = null;
7050
7051                 } else if (!marker._next) {
7052                         marker._prev._middleRight = null;
7053                 }
7054
7055                 this._poly.fire('edit');
7056         },
7057
7058         _updateIndexes: function (index, delta) {
7059                 this._markerGroup.eachLayer(function (marker) {
7060                         if (marker._index > index) {
7061                                 marker._index += delta;
7062                         }
7063                 });
7064         },
7065
7066         _createMiddleMarker: function (marker1, marker2) {
7067                 var latlng = this._getMiddleLatLng(marker1, marker2),
7068                     marker = this._createMarker(latlng),
7069                     onClick,
7070                     onDragStart,
7071                     onDragEnd;
7072
7073                 marker.setOpacity(0.6);
7074
7075                 marker1._middleRight = marker2._middleLeft = marker;
7076
7077                 onDragStart = function () {
7078                         var i = marker2._index;
7079
7080                         marker._index = i;
7081
7082                         marker
7083                             .off('click', onClick)
7084                             .on('click', this._onMarkerClick, this);
7085
7086                         latlng.lat = marker.getLatLng().lat;
7087                         latlng.lng = marker.getLatLng().lng;
7088                         this._poly.spliceLatLngs(i, 0, latlng);
7089                         this._markers.splice(i, 0, marker);
7090
7091                         marker.setOpacity(1);
7092
7093                         this._updateIndexes(i, 1);
7094                         marker2._index++;
7095                         this._updatePrevNext(marker1, marker);
7096                         this._updatePrevNext(marker, marker2);
7097                 };
7098
7099                 onDragEnd = function () {
7100                         marker.off('dragstart', onDragStart, this);
7101                         marker.off('dragend', onDragEnd, this);
7102
7103                         this._createMiddleMarker(marker1, marker);
7104                         this._createMiddleMarker(marker, marker2);
7105                 };
7106
7107                 onClick = function () {
7108                         onDragStart.call(this);
7109                         onDragEnd.call(this);
7110                         this._poly.fire('edit');
7111                 };
7112
7113                 marker
7114                     .on('click', onClick, this)
7115                     .on('dragstart', onDragStart, this)
7116                     .on('dragend', onDragEnd, this);
7117
7118                 this._markerGroup.addLayer(marker);
7119         },
7120
7121         _updatePrevNext: function (marker1, marker2) {
7122                 if (marker1) {
7123                         marker1._next = marker2;
7124                 }
7125                 if (marker2) {
7126                         marker2._prev = marker1;
7127                 }
7128         },
7129
7130         _getMiddleLatLng: function (marker1, marker2) {
7131                 var map = this._poly._map,
7132                     p1 = map.latLngToLayerPoint(marker1.getLatLng()),
7133                     p2 = map.latLngToLayerPoint(marker2.getLatLng());
7134
7135                 return map.layerPointToLatLng(p1._add(p2)._divideBy(2));
7136         }
7137 });
7138
7139 L.Polyline.addInitHook(function () {
7140
7141         if (L.Handler.PolyEdit) {
7142                 this.editing = new L.Handler.PolyEdit(this);
7143
7144                 if (this.options.editable) {
7145                         this.editing.enable();
7146                 }
7147         }
7148
7149         this.on('add', function () {
7150                 if (this.editing && this.editing.enabled()) {
7151                         this.editing.addHooks();
7152                 }
7153         });
7154
7155         this.on('remove', function () {
7156                 if (this.editing && this.editing.enabled()) {
7157                         this.editing.removeHooks();
7158                 }
7159         });
7160 });
7161
7162
7163 /*
7164  * L.Control is a base class for implementing map controls. Handles positioning.
7165  * All other controls extend from this class.
7166  */
7167
7168 L.Control = L.Class.extend({
7169         options: {
7170                 position: 'topright'
7171         },
7172
7173         initialize: function (options) {
7174                 L.setOptions(this, options);
7175         },
7176
7177         getPosition: function () {
7178                 return this.options.position;
7179         },
7180
7181         setPosition: function (position) {
7182                 var map = this._map;
7183
7184                 if (map) {
7185                         map.removeControl(this);
7186                 }
7187
7188                 this.options.position = position;
7189
7190                 if (map) {
7191                         map.addControl(this);
7192                 }
7193
7194                 return this;
7195         },
7196
7197         addTo: function (map) {
7198                 this._map = map;
7199
7200                 var container = this._container = this.onAdd(map),
7201                     pos = this.getPosition(),
7202                     corner = map._controlCorners[pos];
7203
7204                 L.DomUtil.addClass(container, 'leaflet-control');
7205
7206                 if (pos.indexOf('bottom') !== -1) {
7207                         corner.insertBefore(container, corner.firstChild);
7208                 } else {
7209                         corner.appendChild(container);
7210                 }
7211
7212                 return this;
7213         },
7214
7215         removeFrom: function (map) {
7216                 var pos = this.getPosition(),
7217                     corner = map._controlCorners[pos];
7218
7219                 corner.removeChild(this._container);
7220                 this._map = null;
7221
7222                 if (this.onRemove) {
7223                         this.onRemove(map);
7224                 }
7225
7226                 return this;
7227         }
7228 });
7229
7230 L.control = function (options) {
7231         return new L.Control(options);
7232 };
7233
7234
7235 /*
7236  * Adds control-related methods to L.Map.
7237  */
7238
7239 L.Map.include({
7240         addControl: function (control) {
7241                 control.addTo(this);
7242                 return this;
7243         },
7244
7245         removeControl: function (control) {
7246                 control.removeFrom(this);
7247                 return this;
7248         },
7249
7250         _initControlPos: function () {
7251                 var corners = this._controlCorners = {},
7252                     l = 'leaflet-',
7253                     container = this._controlContainer =
7254                             L.DomUtil.create('div', l + 'control-container', this._container);
7255
7256                 function createCorner(vSide, hSide) {
7257                         var className = l + vSide + ' ' + l + hSide;
7258
7259                         corners[vSide + hSide] = L.DomUtil.create('div', className, container);
7260                 }
7261
7262                 createCorner('top', 'left');
7263                 createCorner('top', 'right');
7264                 createCorner('bottom', 'left');
7265                 createCorner('bottom', 'right');
7266         }
7267 });
7268
7269
7270 /*
7271  * L.Control.Zoom is used for the default zoom buttons on the map.
7272  */
7273
7274 L.Control.Zoom = L.Control.extend({
7275         options: {
7276                 position: 'topleft'
7277         },
7278
7279         onAdd: function (map) {
7280                 var zoomName = 'leaflet-control-zoom',
7281                     barName = 'leaflet-bar',
7282                     partName = barName + '-part',
7283                     container = L.DomUtil.create('div', zoomName + ' ' + barName);
7284
7285                 this._map = map;
7286
7287                 this._zoomInButton = this._createButton('+', 'Zoom in',
7288                         zoomName + '-in ' +
7289                         partName + ' ' +
7290                         partName + '-top',
7291                         container, this._zoomIn,  this);
7292
7293                 this._zoomOutButton = this._createButton('-', 'Zoom out',
7294                         zoomName + '-out ' +
7295                         partName + ' ' +
7296                         partName + '-bottom',
7297                         container, this._zoomOut, this);
7298
7299                 map.on('zoomend', this._updateDisabled, this);
7300
7301                 return container;
7302         },
7303
7304         onRemove: function (map) {
7305                 map.off('zoomend', this._updateDisabled, this);
7306         },
7307
7308         _zoomIn: function (e) {
7309                 this._map.zoomIn(e.shiftKey ? 3 : 1);
7310         },
7311
7312         _zoomOut: function (e) {
7313                 this._map.zoomOut(e.shiftKey ? 3 : 1);
7314         },
7315
7316         _createButton: function (html, title, className, container, fn, context) {
7317                 var link = L.DomUtil.create('a', className, container);
7318                 link.innerHTML = html;
7319                 link.href = '#';
7320                 link.title = title;
7321
7322                 var stop = L.DomEvent.stopPropagation;
7323
7324                 L.DomEvent
7325                     .on(link, 'click', stop)
7326                     .on(link, 'mousedown', stop)
7327                     .on(link, 'dblclick', stop)
7328                     .on(link, 'click', L.DomEvent.preventDefault)
7329                     .on(link, 'click', fn, context);
7330
7331                 return link;
7332         },
7333
7334         _updateDisabled: function () {
7335                 var map = this._map,
7336                         className = 'leaflet-control-zoom-disabled';
7337
7338                 L.DomUtil.removeClass(this._zoomInButton, className);
7339                 L.DomUtil.removeClass(this._zoomOutButton, className);
7340
7341                 if (map._zoom === map.getMinZoom()) {
7342                         L.DomUtil.addClass(this._zoomOutButton, className);
7343                 }
7344                 if (map._zoom === map.getMaxZoom()) {
7345                         L.DomUtil.addClass(this._zoomInButton, className);
7346                 }
7347         }
7348 });
7349
7350 L.Map.mergeOptions({
7351         zoomControl: true
7352 });
7353
7354 L.Map.addInitHook(function () {
7355         if (this.options.zoomControl) {
7356                 this.zoomControl = new L.Control.Zoom();
7357                 this.addControl(this.zoomControl);
7358         }
7359 });
7360
7361 L.control.zoom = function (options) {
7362         return new L.Control.Zoom(options);
7363 };
7364
7365
7366
7367 /*
7368  * L.Control.Attribution is used for displaying attribution on the map (added by default).
7369  */
7370
7371 L.Control.Attribution = L.Control.extend({
7372         options: {
7373                 position: 'bottomright',
7374                 prefix: 'Powered by <a href="http://leafletjs.com">Leaflet</a>'
7375         },
7376
7377         initialize: function (options) {
7378                 L.setOptions(this, options);
7379
7380                 this._attributions = {};
7381         },
7382
7383         onAdd: function (map) {
7384                 this._container = L.DomUtil.create('div', 'leaflet-control-attribution');
7385                 L.DomEvent.disableClickPropagation(this._container);
7386
7387                 map
7388                     .on('layeradd', this._onLayerAdd, this)
7389                     .on('layerremove', this._onLayerRemove, this);
7390
7391                 this._update();
7392
7393                 return this._container;
7394         },
7395
7396         onRemove: function (map) {
7397                 map
7398                     .off('layeradd', this._onLayerAdd)
7399                     .off('layerremove', this._onLayerRemove);
7400
7401         },
7402
7403         setPrefix: function (prefix) {
7404                 this.options.prefix = prefix;
7405                 this._update();
7406                 return this;
7407         },
7408
7409         addAttribution: function (text) {
7410                 if (!text) { return; }
7411
7412                 if (!this._attributions[text]) {
7413                         this._attributions[text] = 0;
7414                 }
7415                 this._attributions[text]++;
7416
7417                 this._update();
7418
7419                 return this;
7420         },
7421
7422         removeAttribution: function (text) {
7423                 if (!text) { return; }
7424
7425                 this._attributions[text]--;
7426                 this._update();
7427
7428                 return this;
7429         },
7430
7431         _update: function () {
7432                 if (!this._map) { return; }
7433
7434                 var attribs = [];
7435
7436                 for (var i in this._attributions) {
7437                         if (this._attributions.hasOwnProperty(i) && this._attributions[i]) {
7438                                 attribs.push(i);
7439                         }
7440                 }
7441
7442                 var prefixAndAttribs = [];
7443
7444                 if (this.options.prefix) {
7445                         prefixAndAttribs.push(this.options.prefix);
7446                 }
7447                 if (attribs.length) {
7448                         prefixAndAttribs.push(attribs.join(', '));
7449                 }
7450
7451                 this._container.innerHTML = prefixAndAttribs.join(' &#8212; ');
7452         },
7453
7454         _onLayerAdd: function (e) {
7455                 if (e.layer.getAttribution) {
7456                         this.addAttribution(e.layer.getAttribution());
7457                 }
7458         },
7459
7460         _onLayerRemove: function (e) {
7461                 if (e.layer.getAttribution) {
7462                         this.removeAttribution(e.layer.getAttribution());
7463                 }
7464         }
7465 });
7466
7467 L.Map.mergeOptions({
7468         attributionControl: true
7469 });
7470
7471 L.Map.addInitHook(function () {
7472         if (this.options.attributionControl) {
7473                 this.attributionControl = (new L.Control.Attribution()).addTo(this);
7474         }
7475 });
7476
7477 L.control.attribution = function (options) {
7478         return new L.Control.Attribution(options);
7479 };
7480
7481
7482 /*
7483  * L.Control.Scale is used for displaying metric/imperial scale on the map.
7484  */
7485
7486 L.Control.Scale = L.Control.extend({
7487         options: {
7488                 position: 'bottomleft',
7489                 maxWidth: 100,
7490                 metric: true,
7491                 imperial: true,
7492                 updateWhenIdle: false
7493         },
7494
7495         onAdd: function (map) {
7496                 this._map = map;
7497
7498                 var className = 'leaflet-control-scale',
7499                     container = L.DomUtil.create('div', className),
7500                     options = this.options;
7501
7502                 this._addScales(options, className, container);
7503
7504                 map.on(options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
7505                 map.whenReady(this._update, this);
7506
7507                 return container;
7508         },
7509
7510         onRemove: function (map) {
7511                 map.off(this.options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
7512         },
7513
7514         _addScales: function (options, className, container) {
7515                 if (options.metric) {
7516                         this._mScale = L.DomUtil.create('div', className + '-line', container);
7517                 }
7518                 if (options.imperial) {
7519                         this._iScale = L.DomUtil.create('div', className + '-line', container);
7520                 }
7521         },
7522
7523         _update: function () {
7524                 var bounds = this._map.getBounds(),
7525                     centerLat = bounds.getCenter().lat,
7526                     halfWorldMeters = 6378137 * Math.PI * Math.cos(centerLat * Math.PI / 180),
7527                     dist = halfWorldMeters * (bounds.getNorthEast().lng - bounds.getSouthWest().lng) / 180,
7528
7529                     size = this._map.getSize(),
7530                     options = this.options,
7531                     maxMeters = 0;
7532
7533                 if (size.x > 0) {
7534                         maxMeters = dist * (options.maxWidth / size.x);
7535                 }
7536
7537                 this._updateScales(options, maxMeters);
7538         },
7539
7540         _updateScales: function (options, maxMeters) {
7541                 if (options.metric && maxMeters) {
7542                         this._updateMetric(maxMeters);
7543                 }
7544
7545                 if (options.imperial && maxMeters) {
7546                         this._updateImperial(maxMeters);
7547                 }
7548         },
7549
7550         _updateMetric: function (maxMeters) {
7551                 var meters = this._getRoundNum(maxMeters);
7552
7553                 this._mScale.style.width = this._getScaleWidth(meters / maxMeters) + 'px';
7554                 this._mScale.innerHTML = meters < 1000 ? meters + ' m' : (meters / 1000) + ' km';
7555         },
7556
7557         _updateImperial: function (maxMeters) {
7558                 var maxFeet = maxMeters * 3.2808399,
7559                     scale = this._iScale,
7560                     maxMiles, miles, feet;
7561
7562                 if (maxFeet > 5280) {
7563                         maxMiles = maxFeet / 5280;
7564                         miles = this._getRoundNum(maxMiles);
7565
7566                         scale.style.width = this._getScaleWidth(miles / maxMiles) + 'px';
7567                         scale.innerHTML = miles + ' mi';
7568
7569                 } else {
7570                         feet = this._getRoundNum(maxFeet);
7571
7572                         scale.style.width = this._getScaleWidth(feet / maxFeet) + 'px';
7573                         scale.innerHTML = feet + ' ft';
7574                 }
7575         },
7576
7577         _getScaleWidth: function (ratio) {
7578                 return Math.round(this.options.maxWidth * ratio) - 10;
7579         },
7580
7581         _getRoundNum: function (num) {
7582                 var pow10 = Math.pow(10, (Math.floor(num) + '').length - 1),
7583                     d = num / pow10;
7584
7585                 d = d >= 10 ? 10 : d >= 5 ? 5 : d >= 3 ? 3 : d >= 2 ? 2 : 1;
7586
7587                 return pow10 * d;
7588         }
7589 });
7590
7591 L.control.scale = function (options) {
7592         return new L.Control.Scale(options);
7593 };
7594
7595
7596 /*
7597  * L.Control.Layers is a control to allow users to switch between different layers on the map.
7598  */
7599
7600 L.Control.Layers = L.Control.extend({
7601         options: {
7602                 collapsed: true,
7603                 position: 'topright',
7604                 autoZIndex: true
7605         },
7606
7607         initialize: function (baseLayers, overlays, options) {
7608                 L.setOptions(this, options);
7609
7610                 this._layers = {};
7611                 this._lastZIndex = 0;
7612                 this._handlingClick = false;
7613
7614                 for (var i in baseLayers) {
7615                         if (baseLayers.hasOwnProperty(i)) {
7616                                 this._addLayer(baseLayers[i], i);
7617                         }
7618                 }
7619
7620                 for (i in overlays) {
7621                         if (overlays.hasOwnProperty(i)) {
7622                                 this._addLayer(overlays[i], i, true);
7623                         }
7624                 }
7625         },
7626
7627         onAdd: function (map) {
7628                 this._initLayout();
7629                 this._update();
7630
7631                 map
7632                     .on('layeradd', this._onLayerChange, this)
7633                     .on('layerremove', this._onLayerChange, this);
7634
7635                 return this._container;
7636         },
7637
7638         onRemove: function (map) {
7639                 map
7640                     .off('layeradd', this._onLayerChange)
7641                     .off('layerremove', this._onLayerChange);
7642         },
7643
7644         addBaseLayer: function (layer, name) {
7645                 this._addLayer(layer, name);
7646                 this._update();
7647                 return this;
7648         },
7649
7650         addOverlay: function (layer, name) {
7651                 this._addLayer(layer, name, true);
7652                 this._update();
7653                 return this;
7654         },
7655
7656         removeLayer: function (layer) {
7657                 var id = L.stamp(layer);
7658                 delete this._layers[id];
7659                 this._update();
7660                 return this;
7661         },
7662
7663         _initLayout: function () {
7664                 var className = 'leaflet-control-layers',
7665                     container = this._container = L.DomUtil.create('div', className);
7666
7667                 if (!L.Browser.touch) {
7668                         L.DomEvent.disableClickPropagation(container);
7669                         L.DomEvent.on(container, 'mousewheel', L.DomEvent.stopPropagation);
7670                 } else {
7671                         L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation);
7672                 }
7673
7674                 var form = this._form = L.DomUtil.create('form', className + '-list');
7675
7676                 if (this.options.collapsed) {
7677                         L.DomEvent
7678                             .on(container, 'mouseover', this._expand, this)
7679                             .on(container, 'mouseout', this._collapse, this);
7680
7681                         var link = this._layersLink = L.DomUtil.create('a', className + '-toggle', container);
7682                         link.href = '#';
7683                         link.title = 'Layers';
7684
7685                         if (L.Browser.touch) {
7686                                 L.DomEvent
7687                                     .on(link, 'click', L.DomEvent.stopPropagation)
7688                                     .on(link, 'click', L.DomEvent.preventDefault)
7689                                     .on(link, 'click', this._expand, this);
7690                         }
7691                         else {
7692                                 L.DomEvent.on(link, 'focus', this._expand, this);
7693                         }
7694
7695                         this._map.on('movestart', this._collapse, this);
7696                         // TODO keyboard accessibility
7697                 } else {
7698                         this._expand();
7699                 }
7700
7701                 this._baseLayersList = L.DomUtil.create('div', className + '-base', form);
7702                 this._separator = L.DomUtil.create('div', className + '-separator', form);
7703                 this._overlaysList = L.DomUtil.create('div', className + '-overlays', form);
7704
7705                 container.appendChild(form);
7706         },
7707
7708         _addLayer: function (layer, name, overlay) {
7709                 var id = L.stamp(layer);
7710
7711                 this._layers[id] = {
7712                         layer: layer,
7713                         name: name,
7714                         overlay: overlay
7715                 };
7716
7717                 if (this.options.autoZIndex && layer.setZIndex) {
7718                         this._lastZIndex++;
7719                         layer.setZIndex(this._lastZIndex);
7720                 }
7721         },
7722
7723         _update: function () {
7724                 if (!this._container) {
7725                         return;
7726                 }
7727
7728                 this._baseLayersList.innerHTML = '';
7729                 this._overlaysList.innerHTML = '';
7730
7731                 var baseLayersPresent = false,
7732                     overlaysPresent = false;
7733
7734                 for (var i in this._layers) {
7735                         if (this._layers.hasOwnProperty(i)) {
7736                                 var obj = this._layers[i];
7737                                 this._addItem(obj);
7738                                 overlaysPresent = overlaysPresent || obj.overlay;
7739                                 baseLayersPresent = baseLayersPresent || !obj.overlay;
7740                         }
7741                 }
7742
7743                 this._separator.style.display = (overlaysPresent && baseLayersPresent ? '' : 'none');
7744         },
7745
7746         _onLayerChange: function (e) {
7747                 var id = L.stamp(e.layer);
7748
7749                 if (this._layers[id] && !this._handlingClick) {
7750                         this._update();
7751                 }
7752         },
7753
7754         // IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe)
7755         _createRadioElement: function (name, checked) {
7756
7757                 var radioHtml = '<input type="radio" class="leaflet-control-layers-selector" name="' + name + '"';
7758                 if (checked) {
7759                         radioHtml += ' checked="checked"';
7760                 }
7761                 radioHtml += '/>';
7762
7763                 var radioFragment = document.createElement('div');
7764                 radioFragment.innerHTML = radioHtml;
7765
7766                 return radioFragment.firstChild;
7767         },
7768
7769         _addItem: function (obj) {
7770                 var label = document.createElement('label'),
7771                     input,
7772                     checked = this._map.hasLayer(obj.layer);
7773
7774                 if (obj.overlay) {
7775                         input = document.createElement('input');
7776                         input.type = 'checkbox';
7777                         input.className = 'leaflet-control-layers-selector';
7778                         input.defaultChecked = checked;
7779                 } else {
7780                         input = this._createRadioElement('leaflet-base-layers', checked);
7781                 }
7782
7783                 input.layerId = L.stamp(obj.layer);
7784
7785                 L.DomEvent.on(input, 'click', this._onInputClick, this);
7786
7787                 var name = document.createElement('span');
7788                 name.innerHTML = ' ' + obj.name;
7789
7790                 label.appendChild(input);
7791                 label.appendChild(name);
7792
7793                 var container = obj.overlay ? this._overlaysList : this._baseLayersList;
7794                 container.appendChild(label);
7795
7796                 return label;
7797         },
7798
7799         _onInputClick: function () {
7800                 var i, input, obj,
7801                     inputs = this._form.getElementsByTagName('input'),
7802                     inputsLen = inputs.length,
7803                     baseLayer;
7804
7805                 this._handlingClick = true;
7806
7807                 for (i = 0; i < inputsLen; i++) {
7808                         input = inputs[i];
7809                         obj = this._layers[input.layerId];
7810
7811                         if (input.checked && !this._map.hasLayer(obj.layer)) {
7812                                 this._map.addLayer(obj.layer);
7813                                 if (!obj.overlay) {
7814                                         baseLayer = obj.layer;
7815                                 }
7816                         } else if (!input.checked && this._map.hasLayer(obj.layer)) {
7817                                 this._map.removeLayer(obj.layer);
7818                         }
7819                 }
7820
7821                 if (baseLayer) {
7822                         this._map.setZoom(this._map.getZoom());
7823                         this._map.fire('baselayerchange', {layer: baseLayer});
7824                 }
7825
7826                 this._handlingClick = false;
7827         },
7828
7829         _expand: function () {
7830                 L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded');
7831         },
7832
7833         _collapse: function () {
7834                 this._container.className = this._container.className.replace(' leaflet-control-layers-expanded', '');
7835         }
7836 });
7837
7838 L.control.layers = function (baseLayers, overlays, options) {
7839         return new L.Control.Layers(baseLayers, overlays, options);
7840 };
7841
7842
7843 /*
7844  * L.PosAnimation is used by Leaflet internally for pan animations.
7845  */
7846
7847 L.PosAnimation = L.Class.extend({
7848         includes: L.Mixin.Events,
7849
7850         run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
7851                 this.stop();
7852
7853                 this._el = el;
7854                 this._inProgress = true;
7855
7856                 this.fire('start');
7857
7858                 el.style[L.DomUtil.TRANSITION] = 'all ' + (duration || 0.25) +
7859                         's cubic-bezier(0,0,' + (easeLinearity || 0.5) + ',1)';
7860
7861                 L.DomEvent.on(el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
7862                 L.DomUtil.setPosition(el, newPos);
7863
7864                 // toggle reflow, Chrome flickers for some reason if you don't do this
7865                 L.Util.falseFn(el.offsetWidth);
7866
7867                 // there's no native way to track value updates of transitioned properties, so we imitate this
7868                 this._stepTimer = setInterval(L.bind(this.fire, this, 'step'), 50);
7869         },
7870
7871         stop: function () {
7872                 if (!this._inProgress) { return; }
7873
7874                 // if we just removed the transition property, the element would jump to its final position,
7875                 // so we need to make it stay at the current position
7876
7877                 L.DomUtil.setPosition(this._el, this._getPos());
7878                 this._onTransitionEnd();
7879                 L.Util.falseFn(this._el.offsetWidth); // force reflow in case we are about to start a new animation
7880         },
7881
7882         // you can't easily get intermediate values of properties animated with CSS3 Transitions,
7883         // we need to parse computed style (in case of transform it returns matrix string)
7884
7885         _transformRe: /(-?[\d\.]+), (-?[\d\.]+)\)/,
7886
7887         _getPos: function () {
7888                 var left, top, matches,
7889                     el = this._el,
7890                     style = window.getComputedStyle(el);
7891
7892                 if (L.Browser.any3d) {
7893                         matches = style[L.DomUtil.TRANSFORM].match(this._transformRe);
7894                         left = parseFloat(matches[1]);
7895                         top  = parseFloat(matches[2]);
7896                 } else {
7897                         left = parseFloat(style.left);
7898                         top  = parseFloat(style.top);
7899                 }
7900
7901                 return new L.Point(left, top, true);
7902         },
7903
7904         _onTransitionEnd: function () {
7905                 L.DomEvent.off(this._el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
7906
7907                 if (!this._inProgress) { return; }
7908                 this._inProgress = false;
7909
7910                 this._el.style[L.DomUtil.TRANSITION] = '';
7911
7912                 clearInterval(this._stepTimer);
7913
7914                 this.fire('step').fire('end');
7915         }
7916
7917 });
7918
7919
7920 /*
7921  * Extends L.Map to handle panning animations.
7922  */
7923
7924 L.Map.include({
7925
7926         setView: function (center, zoom, forceReset) {
7927                 zoom = this._limitZoom(zoom);
7928
7929                 var zoomChanged = (this._zoom !== zoom);
7930
7931                 if (this._loaded && !forceReset && this._layers) {
7932
7933                         if (this._panAnim) {
7934                                 this._panAnim.stop();
7935                         }
7936
7937                         var done = (zoomChanged ?
7938                                 this._zoomToIfClose && this._zoomToIfClose(center, zoom) :
7939                                 this._panByIfClose(center));
7940
7941                         // exit if animated pan or zoom started
7942                         if (done) {
7943                                 clearTimeout(this._sizeTimer);
7944                                 return this;
7945                         }
7946                 }
7947
7948                 // reset the map view
7949                 this._resetView(center, zoom);
7950
7951                 return this;
7952         },
7953
7954         panBy: function (offset, duration, easeLinearity) {
7955                 offset = L.point(offset);
7956
7957                 if (!(offset.x || offset.y)) {
7958                         return this;
7959                 }
7960
7961                 if (!this._panAnim) {
7962                         this._panAnim = new L.PosAnimation();
7963
7964                         this._panAnim.on({
7965                                 'step': this._onPanTransitionStep,
7966                                 'end': this._onPanTransitionEnd
7967                         }, this);
7968                 }
7969
7970                 this.fire('movestart');
7971
7972                 L.DomUtil.addClass(this._mapPane, 'leaflet-pan-anim');
7973
7974                 var newPos = L.DomUtil.getPosition(this._mapPane).subtract(offset)._round();
7975                 this._panAnim.run(this._mapPane, newPos, duration || 0.25, easeLinearity);
7976
7977                 return this;
7978         },
7979
7980         _onPanTransitionStep: function () {
7981                 this.fire('move');
7982         },
7983
7984         _onPanTransitionEnd: function () {
7985                 L.DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim');
7986                 this.fire('moveend');
7987         },
7988
7989         _panByIfClose: function (center) {
7990                 // difference between the new and current centers in pixels
7991                 var offset = this._getCenterOffset(center)._floor();
7992
7993                 if (this._offsetIsWithinView(offset)) {
7994                         this.panBy(offset);
7995                         return true;
7996                 }
7997                 return false;
7998         },
7999
8000         _offsetIsWithinView: function (offset, multiplyFactor) {
8001                 var m = multiplyFactor || 1,
8002                     size = this.getSize();
8003
8004                 return (Math.abs(offset.x) <= size.x * m) &&
8005                        (Math.abs(offset.y) <= size.y * m);
8006         }
8007 });
8008
8009
8010 /*
8011  * L.PosAnimation fallback implementation that powers Leaflet pan animations
8012  * in browsers that don't support CSS3 Transitions.
8013  */
8014
8015 L.PosAnimation = L.DomUtil.TRANSITION ? L.PosAnimation : L.PosAnimation.extend({
8016
8017         run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
8018                 this.stop();
8019
8020                 this._el = el;
8021                 this._inProgress = true;
8022                 this._duration = duration || 0.25;
8023                 this._easeOutPower = 1 / Math.max(easeLinearity || 0.5, 0.2);
8024
8025                 this._startPos = L.DomUtil.getPosition(el);
8026                 this._offset = newPos.subtract(this._startPos);
8027                 this._startTime = +new Date();
8028
8029                 this.fire('start');
8030
8031                 this._animate();
8032         },
8033
8034         stop: function () {
8035                 if (!this._inProgress) { return; }
8036
8037                 this._step();
8038                 this._complete();
8039         },
8040
8041         _animate: function () {
8042                 // animation loop
8043                 this._animId = L.Util.requestAnimFrame(this._animate, this);
8044                 this._step();
8045         },
8046
8047         _step: function () {
8048                 var elapsed = (+new Date()) - this._startTime,
8049                     duration = this._duration * 1000;
8050
8051                 if (elapsed < duration) {
8052                         this._runFrame(this._easeOut(elapsed / duration));
8053                 } else {
8054                         this._runFrame(1);
8055                         this._complete();
8056                 }
8057         },
8058
8059         _runFrame: function (progress) {
8060                 var pos = this._startPos.add(this._offset.multiplyBy(progress));
8061                 L.DomUtil.setPosition(this._el, pos);
8062
8063                 this.fire('step');
8064         },
8065
8066         _complete: function () {
8067                 L.Util.cancelAnimFrame(this._animId);
8068
8069                 this._inProgress = false;
8070                 this.fire('end');
8071         },
8072
8073         _easeOut: function (t) {
8074                 return 1 - Math.pow(1 - t, this._easeOutPower);
8075         }
8076 });
8077
8078
8079 /*
8080  * Extends L.Map to handle zoom animations.
8081  */
8082
8083 L.Map.mergeOptions({
8084         zoomAnimation: L.DomUtil.TRANSITION && !L.Browser.android23 && !L.Browser.mobileOpera
8085 });
8086
8087 if (L.DomUtil.TRANSITION) {
8088         L.Map.addInitHook(function () {
8089                 L.DomEvent.on(this._mapPane, L.DomUtil.TRANSITION_END, this._catchTransitionEnd, this);
8090         });
8091 }
8092
8093 L.Map.include(!L.DomUtil.TRANSITION ? {} : {
8094
8095         _zoomToIfClose: function (center, zoom) {
8096
8097                 if (this._animatingZoom) { return true; }
8098
8099                 if (!this.options.zoomAnimation) { return false; }
8100
8101                 var scale = this.getZoomScale(zoom),
8102                     offset = this._getCenterOffset(center)._divideBy(1 - 1 / scale);
8103
8104                 // if offset does not exceed half of the view
8105                 if (!this._offsetIsWithinView(offset, 1)) { return false; }
8106
8107                 L.DomUtil.addClass(this._mapPane, 'leaflet-zoom-anim');
8108
8109                 this
8110                     .fire('movestart')
8111                     .fire('zoomstart');
8112
8113                 this.fire('zoomanim', {
8114                         center: center,
8115                         zoom: zoom
8116                 });
8117
8118                 var origin = this._getCenterLayerPoint().add(offset);
8119
8120                 this._prepareTileBg();
8121                 this._runAnimation(center, zoom, scale, origin);
8122
8123                 return true;
8124         },
8125
8126         _catchTransitionEnd: function () {
8127                 if (this._animatingZoom) {
8128                         this._onZoomTransitionEnd();
8129                 }
8130         },
8131
8132         _runAnimation: function (center, zoom, scale, origin, backwardsTransform) {
8133                 this._animateToCenter = center;
8134                 this._animateToZoom = zoom;
8135                 this._animatingZoom = true;
8136
8137                 if (L.Draggable) {
8138                         L.Draggable._disabled = true;
8139                 }
8140
8141                 var transform = L.DomUtil.TRANSFORM,
8142                     tileBg = this._tileBg;
8143
8144                 clearTimeout(this._clearTileBgTimer);
8145
8146                 L.Util.falseFn(tileBg.offsetWidth); //hack to make sure transform is updated before running animation
8147
8148                 var scaleStr = L.DomUtil.getScaleString(scale, origin),
8149                     oldTransform = tileBg.style[transform];
8150
8151                 tileBg.style[transform] = backwardsTransform ?
8152                         oldTransform + ' ' + scaleStr :
8153                         scaleStr + ' ' + oldTransform;
8154         },
8155
8156         _prepareTileBg: function () {
8157                 var tilePane = this._tilePane,
8158                     tileBg = this._tileBg;
8159
8160                 // If foreground layer doesn't have many tiles but bg layer does, keep the existing bg layer and just zoom it some more
8161                 if (tileBg && this._getLoadedTilesPercentage(tileBg) > 0.5 &&
8162                                   this._getLoadedTilesPercentage(tilePane) < 0.5) {
8163
8164                         tilePane.style.visibility = 'hidden';
8165                         tilePane.empty = true;
8166                         this._stopLoadingImages(tilePane);
8167                         return;
8168                 }
8169
8170                 if (!tileBg) {
8171                         tileBg = this._tileBg = this._createPane('leaflet-tile-pane', this._mapPane);
8172                         tileBg.style.zIndex = 1;
8173                 }
8174
8175                 // prepare the background pane to become the main tile pane
8176                 tileBg.style[L.DomUtil.TRANSFORM] = '';
8177                 tileBg.style.visibility = 'hidden';
8178
8179                 // tells tile layers to reinitialize their containers
8180                 tileBg.empty = true; //new FG
8181                 tilePane.empty = false; //new BG
8182
8183                 //Switch out the current layer to be the new bg layer (And vice-versa)
8184                 this._tilePane = this._panes.tilePane = tileBg;
8185                 var newTileBg = this._tileBg = tilePane;
8186
8187                 L.DomUtil.addClass(newTileBg, 'leaflet-zoom-animated');
8188
8189                 this._stopLoadingImages(newTileBg);
8190         },
8191
8192         _getLoadedTilesPercentage: function (container) {
8193                 var tiles = container.getElementsByTagName('img'),
8194                     i, len, count = 0;
8195
8196                 for (i = 0, len = tiles.length; i < len; i++) {
8197                         if (tiles[i].complete) {
8198                                 count++;
8199                         }
8200                 }
8201                 return count / len;
8202         },
8203
8204         // stops loading all tiles in the background layer
8205         _stopLoadingImages: function (container) {
8206                 var tiles = Array.prototype.slice.call(container.getElementsByTagName('img')),
8207                     i, len, tile;
8208
8209                 for (i = 0, len = tiles.length; i < len; i++) {
8210                         tile = tiles[i];
8211
8212                         if (!tile.complete) {
8213                                 tile.onload = L.Util.falseFn;
8214                                 tile.onerror = L.Util.falseFn;
8215                                 tile.src = L.Util.emptyImageUrl;
8216
8217                                 tile.parentNode.removeChild(tile);
8218                         }
8219                 }
8220         },
8221
8222         _onZoomTransitionEnd: function () {
8223                 this._restoreTileFront();
8224
8225                 L.DomUtil.removeClass(this._mapPane, 'leaflet-zoom-anim');
8226                 L.Util.falseFn(this._tileBg.offsetWidth); // force reflow
8227                 this._animatingZoom = false;
8228                 this._resetView(this._animateToCenter, this._animateToZoom, true, true);
8229
8230                 if (L.Draggable) {
8231                         L.Draggable._disabled = false;
8232                 }
8233         },
8234
8235         _restoreTileFront: function () {
8236                 this._tilePane.innerHTML = '';
8237                 this._tilePane.style.visibility = '';
8238                 this._tilePane.style.zIndex = 2;
8239                 this._tileBg.style.zIndex = 1;
8240         },
8241
8242         _clearTileBg: function () {
8243                 if (!this._animatingZoom && !this.touchZoom._zooming) {
8244                         this._tileBg.innerHTML = '';
8245                 }
8246         }
8247 });
8248
8249
8250 /*
8251  * Provides L.Map with convenient shortcuts for using browser geolocation features.
8252  */
8253
8254 L.Map.include({
8255         _defaultLocateOptions: {
8256                 watch: false,
8257                 setView: false,
8258                 maxZoom: Infinity,
8259                 timeout: 10000,
8260                 maximumAge: 0,
8261                 enableHighAccuracy: false
8262         },
8263
8264         locate: function (/*Object*/ options) {
8265
8266                 options = this._locationOptions = L.extend(this._defaultLocateOptions, options);
8267
8268                 if (!navigator.geolocation) {
8269                         this._handleGeolocationError({
8270                                 code: 0,
8271                                 message: "Geolocation not supported."
8272                         });
8273                         return this;
8274                 }
8275
8276                 var onResponse = L.bind(this._handleGeolocationResponse, this),
8277                         onError = L.bind(this._handleGeolocationError, this);
8278
8279                 if (options.watch) {
8280                         this._locationWatchId =
8281                                 navigator.geolocation.watchPosition(onResponse, onError, options);
8282                 } else {
8283                         navigator.geolocation.getCurrentPosition(onResponse, onError, options);
8284                 }
8285                 return this;
8286         },
8287
8288         stopLocate: function () {
8289                 if (navigator.geolocation) {
8290                         navigator.geolocation.clearWatch(this._locationWatchId);
8291                 }
8292                 return this;
8293         },
8294
8295         _handleGeolocationError: function (error) {
8296                 var c = error.code,
8297                     message = error.message ||
8298                             (c === 1 ? "permission denied" :
8299                             (c === 2 ? "position unavailable" : "timeout"));
8300
8301                 if (this._locationOptions.setView && !this._loaded) {
8302                         this.fitWorld();
8303                 }
8304
8305                 this.fire('locationerror', {
8306                         code: c,
8307                         message: "Geolocation error: " + message + "."
8308                 });
8309         },
8310
8311         _handleGeolocationResponse: function (pos) {
8312                 var latAccuracy = 180 * pos.coords.accuracy / 4e7,
8313                     lngAccuracy = latAccuracy * 2,
8314
8315                     lat = pos.coords.latitude,
8316                     lng = pos.coords.longitude,
8317                     latlng = new L.LatLng(lat, lng),
8318
8319                     sw = new L.LatLng(lat - latAccuracy, lng - lngAccuracy),
8320                     ne = new L.LatLng(lat + latAccuracy, lng + lngAccuracy),
8321                     bounds = new L.LatLngBounds(sw, ne),
8322
8323                     options = this._locationOptions;
8324
8325                 if (options.setView) {
8326                         var zoom = Math.min(this.getBoundsZoom(bounds), options.maxZoom);
8327                         this.setView(latlng, zoom);
8328                 }
8329
8330                 this.fire('locationfound', {
8331                         latlng: latlng,
8332                         bounds: bounds,
8333                         accuracy: pos.coords.accuracy
8334                 });
8335         }
8336 });
8337
8338
8339 }(this, document));