-/*
-Copyright (c) 2013 Dominik Moritz
+/*!
+Copyright (c) 2016 Dominik Moritz
This file is part of the leaflet locate control. It is licensed under the MIT license.
You can find the project at: https://github.com/domoritz/leaflet-locatecontrol
*/
-L.Control.Locate = L.Control.extend({
- options: {
- position: 'topleft',
- drawCircle: true,
- follow: false, // follow with zoom and pan the user's location
- stopFollowingOnDrag: false, // if follow is true, stop following when map is dragged
- // range circle
- circleStyle: {
- color: '#136AEC',
- fillColor: '#136AEC',
- fillOpacity: 0.15,
- weight: 2,
- opacity: 0.5
- },
- // inner marker
- markerStyle: {
- color: '#136AEC',
- fillColor: '#2A93EE',
- fillOpacity: 0.7,
- weight: 2,
- opacity: 0.9,
- radius: 5
- },
- // changes to range circle and inner marker while following
- // it is only necessary to provide the things that should change
- followCircleStyle: {},
- followMarkerStyle: {
- //color: '#FFA500',
- //fillColor: '#FFB000'
- },
- metric: true,
- onLocationError: function(err) {
- // this event is called in case of any location error
- // that is not a time out error.
- alert(err.message);
- },
- onLocationOutsideMapBounds: function(context) {
- // this event is repeatedly called when the location changes
- alert(context.options.strings.outsideMapBoundsMsg);
- },
- setView: true, // automatically sets the map view to the user's location
- strings: {
- title: "Show me where I am",
- popup: "You are within {distance} {unit} from this point",
- outsideMapBoundsMsg: "You seem located outside the boundaries of the map"
- },
- locateOptions: {}
- },
-
- onAdd: function (map) {
- var container = L.DomUtil.create('div',
- 'leaflet-control-locate leaflet-bar leaflet-control');
-
- var self = this;
- this._layer = new L.LayerGroup();
- this._layer.addTo(map);
- this._event = undefined;
-
- this._locateOptions = {
- watch: true // if you overwrite this, visualization cannot be updated
- };
- L.extend(this._locateOptions, this.options.locateOptions);
- L.extend(this._locateOptions, {
- setView: false // have to set this to false because we have to
- // do setView manually
+(function (factory, window) {
+ // see https://github.com/Leaflet/Leaflet/blob/master/PLUGIN-GUIDE.md#module-loaders
+ // for details on how to structure a leaflet plugin.
+
+ // define an AMD module that relies on 'leaflet'
+ if (typeof define === 'function' && define.amd) {
+ define(['leaflet'], factory);
+
+ // define a Common JS module that relies on 'leaflet'
+ } else if (typeof exports === 'object') {
+ if (typeof window !== 'undefined' && window.L) {
+ module.exports = factory(L);
+ } else {
+ module.exports = factory(require('leaflet'));
+ }
+ }
+
+ // attach your plugin to the global 'L' variable
+ if (typeof window !== 'undefined' && window.L){
+ window.L.Control.Locate = factory(L);
+ }
+} (function (L) {
+ var LDomUtilApplyClassesMethod = function(method, element, classNames) {
+ classNames = classNames.split(' ');
+ classNames.forEach(function(className) {
+ L.DomUtil[method].call(this, element, className);
});
+ };
+
+ var addClasses = function(el, names) { LDomUtilApplyClassesMethod('addClass', el, names); };
+ var removeClasses = function(el, names) { LDomUtilApplyClassesMethod('removeClass', el, names); };
+
+ /**
+ * Compatible with L.Circle but a true marker instead of a path
+ */
+ var LocationMarker = L.Marker.extend({
+ initialize: function (latlng, options) {
+ L.Util.setOptions(this, options);
+ this._latlng = latlng;
+ this.createIcon();
+ },
+
+ /**
+ * Create a styled circle location marker
+ */
+ createIcon: function() {
+ var opt = this.options;
+
+ var style = '';
+
+ if (opt.color !== undefined) {
+ style += 'stroke:'+opt.color+';';
+ }
+ if (opt.weight !== undefined) {
+ style += 'stroke-width:'+opt.weight+';';
+ }
+ if (opt.fillColor !== undefined) {
+ style += 'fill:'+opt.fillColor+';';
+ }
+ if (opt.fillOpacity !== undefined) {
+ style += 'fill-opacity:'+opt.fillOpacity+';';
+ }
+ if (opt.opacity !== undefined) {
+ style += 'opacity:'+opt.opacity+';';
+ }
+
+ var icon = this._getIconSVG(opt, style);
+
+ this._locationIcon = L.divIcon({
+ className: icon.className,
+ html: icon.svg,
+ iconSize: [icon.w,icon.h],
+ });
+
+ this.setIcon(this._locationIcon);
+ },
+
+ /**
+ * Return the raw svg for the shape
+ *
+ * Split so can be easily overridden
+ */
+ _getIconSVG: function(options, style) {
+ var r = options.radius;
+ var w = options.weight;
+ var s = r + w;
+ var s2 = s * 2;
+ var svg = '<svg xmlns="http://www.w3.org/2000/svg" width="'+s2+'" height="'+s2+'" version="1.1" viewBox="-'+s+' -'+s+' '+s2+' '+s2+'">' +
+ '<circle r="'+r+'" style="'+style+'" />' +
+ '</svg>';
+ return {
+ className: 'leaflet-control-locate-location',
+ svg: svg,
+ w: s2,
+ h: s2
+ };
+ },
+
+ setStyle: function(style) {
+ L.Util.setOptions(this, style);
+ this.createIcon();
+ }
+ });
+
+ var CompassMarker = LocationMarker.extend({
+ initialize: function (latlng, heading, options) {
+ L.Util.setOptions(this, options);
+ this._latlng = latlng;
+ this._heading = heading;
+ this.createIcon();
+ },
- // extend the follow marker style and circle from the normal style
- var tmp = {};
- L.extend(tmp, this.options.markerStyle, this.options.followMarkerStyle);
- this.options.followMarkerStyle = tmp;
- tmp = {};
- L.extend(tmp, this.options.circleStyle, this.options.followCircleStyle);
- this.options.followCircleStyle = tmp;
-
- var link = L.DomUtil.create('a', 'leaflet-bar-part leaflet-bar-part-single', container);
- link.href = '#';
- link.title = this.options.strings.title;
-
- L.DomEvent
- .on(link, 'click', L.DomEvent.stopPropagation)
- .on(link, 'click', L.DomEvent.preventDefault)
- .on(link, 'click', function() {
- if (self._active && (map.getBounds().contains(self._event.latlng) || !self.options.setView ||
- isOutsideMapBounds())) {
- stopLocate();
+ setHeading: function(heading) {
+ this._heading = heading;
+ },
+
+ /**
+ * Create a styled arrow compass marker
+ */
+ _getIconSVG: function(options, style) {
+ var r = options.radius;
+ var w = (options.width + options.weight);
+ var h = (r+options.depth + options.weight)*2;
+ var path = 'M0,0 l'+(options.width/2)+','+options.depth+' l-'+(w)+',0 z';
+ var svgstyle = 'transform: rotate('+this._heading+'deg)';
+ var svg = '<svg xmlns="http://www.w3.org/2000/svg" width="'+(w)+'" height="'+h+'" version="1.1" viewBox="-'+(w/2)+' 0 '+w+' '+h+'" style="'+svgstyle+'">'+
+ '<path d="'+path+'" style="'+style+'" />'+
+ '</svg>';
+ return {
+ className: 'leafet-control-locate-heading',
+ svg: svg,
+ w: w,
+ h: h
+ };
+ },
+ });
+
+
+ var LocateControl = L.Control.extend({
+ options: {
+ /** Position of the control */
+ position: 'topleft',
+ /** The layer that the user's location should be drawn on. By default creates a new layer. */
+ layer: undefined,
+ /**
+ * Automatically sets the map view (zoom and pan) to the user's location as it updates.
+ * While the map is following the user's location, the control is in the `following` state,
+ * which changes the style of the control and the circle marker.
+ *
+ * Possible values:
+ * - false: never updates the map view when location changes.
+ * - 'once': set the view when the location is first determined
+ * - 'always': always updates the map view when location changes.
+ * The map view follows the user's location.
+ * - 'untilPan': like 'always', except stops updating the
+ * view if the user has manually panned the map.
+ * The map view follows the user's location until she pans.
+ * - 'untilPanOrZoom': (default) like 'always', except stops updating the
+ * view if the user has manually panned the map.
+ * The map view follows the user's location until she pans.
+ */
+ setView: 'untilPanOrZoom',
+ /** Keep the current map zoom level when setting the view and only pan. */
+ keepCurrentZoomLevel: false,
+ /**
+ * This callback can be used to override the viewport tracking
+ * This function should return a LatLngBounds object.
+ *
+ * For example to extend the viewport to ensure that a particular LatLng is visible:
+ *
+ * getLocationBounds: function(locationEvent) {
+ * return locationEvent.bounds.extend([-33.873085, 151.219273]);
+ * },
+ */
+ getLocationBounds: function (locationEvent) {
+ return locationEvent.bounds;
+ },
+ /** Smooth pan and zoom to the location of the marker. Only works in Leaflet 1.0+. */
+ flyTo: false,
+ /**
+ * The user location can be inside and outside the current view when the user clicks on the
+ * control that is already active. Both cases can be configures separately.
+ * Possible values are:
+ * - 'setView': zoom and pan to the current location
+ * - 'stop': stop locating and remove the location marker
+ */
+ clickBehavior: {
+ /** What should happen if the user clicks on the control while the location is within the current view. */
+ inView: 'stop',
+ /** What should happen if the user clicks on the control while the location is outside the current view. */
+ outOfView: 'setView',
+ /**
+ * What should happen if the user clicks on the control while the location is within the current view
+ * and we could be following but are not. Defaults to a special value which inherits from 'inView';
+ */
+ inViewNotFollowing: 'inView',
+ },
+ /**
+ * If set, save the map bounds just before centering to the user's
+ * location. When control is disabled, set the view back to the
+ * bounds that were saved.
+ */
+ returnToPrevBounds: false,
+ /**
+ * Keep a cache of the location after the user deactivates the control. If set to false, the user has to wait
+ * until the locate API returns a new location before they see where they are again.
+ */
+ cacheLocation: true,
+ /** If set, a circle that shows the location accuracy is drawn. */
+ drawCircle: true,
+ /** If set, the marker at the users' location is drawn. */
+ drawMarker: true,
+ /** If set and supported then show the compass heading */
+ showCompass: true,
+ /** The class to be used to create the marker. For example L.CircleMarker or L.Marker */
+ markerClass: LocationMarker,
+ /** The class us be used to create the compass bearing arrow */
+ compassClass: CompassMarker,
+ /** Accuracy circle style properties. NOTE these styles should match the css animations styles */
+ circleStyle: {
+ className: 'leaflet-control-locate-circle',
+ color: '#136AEC',
+ fillColor: '#136AEC',
+ fillOpacity: 0.15,
+ weight: 0
+ },
+ /** Inner marker style properties. Only works if your marker class supports `setStyle`. */
+ markerStyle: {
+ className: 'leaflet-control-locate-marker',
+ color: '#fff',
+ fillColor: '#2A93EE',
+ fillOpacity: 1,
+ weight: 3,
+ opacity: 1,
+ radius: 9
+ },
+ /** Compass */
+ compassStyle: {
+ fillColor: '#2A93EE',
+ fillOpacity: 1,
+ weight: 0,
+ color: '#fff',
+ opacity: 1,
+ radius: 9, // How far is the arrow is from the center of of the marker
+ width: 9, // Width of the arrow
+ depth: 6 // Length of the arrow
+ },
+ /**
+ * Changes to accuracy circle and inner marker while following.
+ * It is only necessary to provide the properties that should change.
+ */
+ followCircleStyle: {},
+ followMarkerStyle: {
+ // color: '#FFA500',
+ // fillColor: '#FFB000'
+ },
+ followCompassStyle: {},
+ /** The CSS class for the icon. For example fa-location-arrow or fa-map-marker */
+ icon: 'fa fa-map-marker',
+ iconLoading: 'fa fa-spinner fa-spin',
+ /** The element to be created for icons. For example span or i */
+ iconElementTag: 'span',
+ /** Padding around the accuracy circle. */
+ circlePadding: [0, 0],
+ /** Use metric units. */
+ metric: true,
+ /**
+ * This callback can be used in case you would like to override button creation behavior.
+ * This is useful for DOM manipulation frameworks such as angular etc.
+ * This function should return an object with HtmlElement for the button (link property) and the icon (icon property).
+ */
+ createButtonCallback: function (container, options) {
+ var link = L.DomUtil.create('a', 'leaflet-bar-part leaflet-bar-part-single', container);
+ link.title = options.strings.title;
+ var icon = L.DomUtil.create(options.iconElementTag, options.icon, link);
+ return { link: link, icon: icon };
+ },
+ /** This event is called in case of any location error that is not a time out error. */
+ onLocationError: function(err, control) {
+ alert(err.message);
+ },
+ /**
+ * This event is called when the user's location is outside the bounds set on the map.
+ * The event is called repeatedly when the location changes.
+ */
+ onLocationOutsideMapBounds: function(control) {
+ control.stop();
+ alert(control.options.strings.outsideMapBoundsMsg);
+ },
+ /** Display a pop-up when the user click on the inner marker. */
+ showPopup: true,
+ strings: {
+ title: "Show me where I am",
+ metersUnit: "meters",
+ feetUnit: "feet",
+ popup: "You are within {distance} {unit} from this point",
+ outsideMapBoundsMsg: "You seem located outside the boundaries of the map"
+ },
+ /** The default options passed to leaflets locate method. */
+ locateOptions: {
+ maxZoom: Infinity,
+ watch: true, // if you overwrite this, visualization cannot be updated
+ setView: false // have to set this to false because we have to
+ // do setView manually
+ }
+ },
+
+ initialize: function (options) {
+ // set default options if nothing is set (merge one step deep)
+ for (var i in options) {
+ if (typeof this.options[i] === 'object') {
+ L.extend(this.options[i], options[i]);
} else {
- if (self.options.setView) {
- self._locateOnNextLocationFound = true;
- }
- if(!self._active) {
- map.locate(self._locateOptions);
- }
- self._active = true;
- if (self.options.follow) {
- startFollowing();
- }
- if (!self._event) {
- L.DomUtil.addClass(self._container, "requesting");
- L.DomUtil.removeClass(self._container, "active");
- L.DomUtil.removeClass(self._container, "following");
- } else {
- visualizeLocation();
- }
+ this.options[i] = options[i];
}
- })
- .on(link, 'dblclick', L.DomEvent.stopPropagation);
-
- var onLocationFound = function (e) {
- // no need to do anything if the location has not changed
- if (self._event &&
- (self._event.latlng.lat == e.latlng.lat &&
- self._event.latlng.lng == e.latlng.lng)) {
- return;
}
- if (!self._active) {
- return;
+ // extend the follow marker style and circle from the normal style
+ this.options.followMarkerStyle = L.extend({}, this.options.markerStyle, this.options.followMarkerStyle);
+ this.options.followCircleStyle = L.extend({}, this.options.circleStyle, this.options.followCircleStyle);
+ this.options.followCompassStyle = L.extend({}, this.options.compassStyle, this.options.followCompassStyle);
+ },
+
+ /**
+ * Add control to map. Returns the container for the control.
+ */
+ onAdd: function (map) {
+ var container = L.DomUtil.create('div',
+ 'leaflet-control-locate leaflet-bar leaflet-control');
+
+ this._layer = this.options.layer || new L.LayerGroup();
+ this._layer.addTo(map);
+ this._event = undefined;
+ this._compassHeading = null;
+ this._prevBounds = null;
+
+ var linkAndIcon = this.options.createButtonCallback(container, this.options);
+ this._link = linkAndIcon.link;
+ this._icon = linkAndIcon.icon;
+
+ L.DomEvent
+ .on(this._link, 'click', L.DomEvent.stopPropagation)
+ .on(this._link, 'click', L.DomEvent.preventDefault)
+ .on(this._link, 'click', this._onClick, this)
+ .on(this._link, 'dblclick', L.DomEvent.stopPropagation);
+
+ this._resetVariables();
+
+ this._map.on('unload', this._unload, this);
+
+ return container;
+ },
+
+ /**
+ * This method is called when the user clicks on the control.
+ */
+ _onClick: function() {
+ this._justClicked = true;
+ var wasFollowing = this._isFollowing();
+ this._userPanned = false;
+ this._userZoomed = false;
+
+ if (this._active && !this._event) {
+ // click while requesting
+ this.stop();
+ } else if (this._active && this._event !== undefined) {
+ var behaviors = this.options.clickBehavior;
+ var behavior = behaviors.outOfView;
+ if (this._map.getBounds().contains(this._event.latlng)) {
+ behavior = wasFollowing ? behaviors.inView : behaviors.inViewNotFollowing;
+ }
+
+ // Allow inheriting from another behavior
+ if (behaviors[behavior]) {
+ behavior = behaviors[behavior];
+ }
+
+ switch (behavior) {
+ case 'setView':
+ this.setView();
+ break;
+ case 'stop':
+ this.stop();
+ if (this.options.returnToPrevBounds) {
+ var f = this.options.flyTo ? this._map.flyToBounds : this._map.fitBounds;
+ f.bind(this._map)(this._prevBounds);
+ }
+ break;
+ }
+ } else {
+ if (this.options.returnToPrevBounds) {
+ this._prevBounds = this._map.getBounds();
+ }
+ this.start();
}
- self._event = e;
+ this._updateContainerStyle();
+ },
+
+ /**
+ * Starts the plugin:
+ * - activates the engine
+ * - draws the marker (if coordinates available)
+ */
+ start: function() {
+ this._activate();
- if (self.options.follow && self._following) {
- self._locateOnNextLocationFound = true;
+ if (this._event) {
+ this._drawMarker(this._map);
+
+ // if we already have a location but the user clicked on the control
+ if (this.options.setView) {
+ this.setView();
+ }
}
+ this._updateContainerStyle();
+ },
+
+ /**
+ * Stops the plugin:
+ * - deactivates the engine
+ * - reinitializes the button
+ * - removes the marker
+ */
+ stop: function() {
+ this._deactivate();
+
+ this._cleanClasses();
+ this._resetVariables();
+
+ this._removeMarker();
+ },
- visualizeLocation();
- };
+ /**
+ * Keep the control active but stop following the location
+ */
+ stopFollowing: function() {
+ this._userPanned = true;
+ this._updateContainerStyle();
+ this._drawMarker();
+ },
- var startFollowing = function() {
- self._following = true;
- if (self.options.stopFollowingOnDrag) {
- map.on('dragstart', stopFollowing);
+ /**
+ * This method launches the location engine.
+ * It is called before the marker is updated,
+ * event if it does not mean that the event will be ready.
+ *
+ * Override it if you want to add more functionalities.
+ * It should set the this._active to true and do nothing if
+ * this._active is true.
+ */
+ _activate: function() {
+ if (!this._active) {
+ this._map.locate(this.options.locateOptions);
+ this._active = true;
+
+ // bind event listeners
+ this._map.on('locationfound', this._onLocationFound, this);
+ this._map.on('locationerror', this._onLocationError, this);
+ this._map.on('dragstart', this._onDrag, this);
+ this._map.on('zoomstart', this._onZoom, this);
+ this._map.on('zoomend', this._onZoomEnd, this);
+ if (this.options.showCompass) {
+ if ('ondeviceorientationabsolute' in window) {
+ L.DomEvent.on(window, 'deviceorientationabsolute', this._onDeviceOrientation, this);
+ } else if ('ondeviceorientation' in window) {
+ L.DomEvent.on(window, 'deviceorientation', this._onDeviceOrientation, this);
+ }
+ }
}
- };
+ },
- var stopFollowing = function() {
- self._following = false;
- if (self.options.stopFollowingOnDrag) {
- map.off('dragstart', stopFollowing);
+ /**
+ * Called to stop the location engine.
+ *
+ * Override it to shutdown any functionalities you added on start.
+ */
+ _deactivate: function() {
+ this._map.stopLocate();
+ this._active = false;
+
+ if (!this.options.cacheLocation) {
+ this._event = undefined;
}
- visualizeLocation();
- };
- var isOutsideMapBounds = function () {
- if (self._event === undefined)
- return false;
- return map.options.maxBounds &&
- !map.options.maxBounds.contains(self._event.latlng);
- };
-
- var visualizeLocation = function() {
- if (self._event.accuracy === undefined)
- self._event.accuracy = 0;
-
- var radius = self._event.accuracy;
- if (self._locateOnNextLocationFound) {
- if (isOutsideMapBounds()) {
- self.options.onLocationOutsideMapBounds(self);
+ // unbind event listeners
+ this._map.off('locationfound', this._onLocationFound, this);
+ this._map.off('locationerror', this._onLocationError, this);
+ this._map.off('dragstart', this._onDrag, this);
+ this._map.off('zoomstart', this._onZoom, this);
+ this._map.off('zoomend', this._onZoomEnd, this);
+ if (this.options.showCompass) {
+ this._compassHeading = null;
+ if ('ondeviceorientationabsolute' in window) {
+ L.DomEvent.off(window, 'deviceorientationabsolute', this._onDeviceOrientation, this);
+ } else if ('ondeviceorientation' in window) {
+ L.DomEvent.off(window, 'deviceorientation', this._onDeviceOrientation, this);
+ }
+ }
+ },
+
+ /**
+ * Zoom (unless we should keep the zoom level) and an to the current view.
+ */
+ setView: function() {
+ this._drawMarker();
+ if (this._isOutsideMapBounds()) {
+ this._event = undefined; // clear the current location so we can get back into the bounds
+ this.options.onLocationOutsideMapBounds(this);
+ } else {
+ if (this.options.keepCurrentZoomLevel) {
+ var f = this.options.flyTo ? this._map.flyTo : this._map.panTo;
+ f.bind(this._map)([this._event.latitude, this._event.longitude]);
} else {
- map.fitBounds(self._event.bounds);
+ var f = this.options.flyTo ? this._map.flyToBounds : this._map.fitBounds;
+ // Ignore zoom events while setting the viewport as these would stop following
+ this._ignoreEvent = true;
+ f.bind(this._map)(this.options.getLocationBounds(this._event), {
+ padding: this.options.circlePadding,
+ maxZoom: this.options.locateOptions.maxZoom
+ });
+ L.Util.requestAnimFrame(function(){
+ // Wait until after the next animFrame because the flyTo can be async
+ this._ignoreEvent = false;
+ }, this);
+
}
- self._locateOnNextLocationFound = false;
}
+ },
- // circle with the radius of the location's accuracy
- var style;
- if (self.options.drawCircle) {
- if (self._following) {
- style = self.options.followCircleStyle;
+ /**
+ *
+ */
+ _drawCompass: function() {
+ var latlng = this._event.latlng;
+
+ if (this.options.showCompass && latlng && this._compassHeading !== null) {
+ var cStyle = this._isFollowing() ? this.options.followCompassStyle : this.options.compassStyle;
+ if (!this._compass) {
+ this._compass = new this.options.compassClass(latlng, this._compassHeading, cStyle).addTo(this._layer);
} else {
- style = self.options.circleStyle;
+ this._compass.setLatLng(latlng);
+ this._compass.setHeading(this._compassHeading);
+ // If the compassClass can be updated with setStyle, update it.
+ if (this._compass.setStyle) {
+ this._compass.setStyle(cStyle);
+ }
}
+ //
+ }
+ if (this._compass && (!this.options.showCompass || this._compassHeading === null)) {
+ this._compass.removeFrom(this._layer);
+ this._compass = null;
+ }
+ },
+
+ /**
+ * Draw the marker and accuracy circle on the map.
+ *
+ * Uses the event retrieved from onLocationFound from the map.
+ */
+ _drawMarker: function() {
+ if (this._event.accuracy === undefined) {
+ this._event.accuracy = 0;
+ }
- if (!self._circle) {
- self._circle = L.circle(self._event.latlng, radius, style)
- .addTo(self._layer);
+ var radius = this._event.accuracy;
+ var latlng = this._event.latlng;
+
+ // circle with the radius of the location's accuracy
+ if (this.options.drawCircle) {
+ var style = this._isFollowing() ? this.options.followCircleStyle : this.options.circleStyle;
+
+ if (!this._circle) {
+ this._circle = L.circle(latlng, radius, style).addTo(this._layer);
} else {
- self._circle.setLatLng(self._event.latlng).setRadius(radius);
+ this._circle.setLatLng(latlng).setRadius(radius).setStyle(style);
}
}
var distance, unit;
- if (self.options.metric) {
+ if (this.options.metric) {
distance = radius.toFixed(0);
- unit = "meters";
+ unit = this.options.strings.metersUnit;
} else {
distance = (radius * 3.2808399).toFixed(0);
- unit = "feet";
+ unit = this.options.strings.feetUnit;
}
// small inner marker
- var m;
- if (self._following) {
- m = self.options.followMarkerStyle;
- } else {
- m = self.options.markerStyle;
+ if (this.options.drawMarker) {
+ var mStyle = this._isFollowing() ? this.options.followMarkerStyle : this.options.markerStyle;
+ if (!this._marker) {
+ this._marker = new this.options.markerClass(latlng, mStyle).addTo(this._layer);
+ } else {
+ this._marker.setLatLng(latlng);
+ // If the markerClass can be updated with setStyle, update it.
+ if (this._marker.setStyle) {
+ this._marker.setStyle(mStyle);
+ }
+ }
}
- var t = self.options.strings.popup;
- if (!self._circleMarker) {
- self._circleMarker = L.circleMarker(self._event.latlng, m)
+ this._drawCompass();
+
+ var t = this.options.strings.popup;
+ if (this.options.showPopup && t && this._marker) {
+ this._marker
.bindPopup(L.Util.template(t, {distance: distance, unit: unit}))
- .addTo(self._layer);
- } else {
- self._circleMarker.setLatLng(self._event.latlng)
+ ._popup.setLatLng(latlng);
+ }
+ if (this.options.showPopup && t && this._compass) {
+ this._compass
.bindPopup(L.Util.template(t, {distance: distance, unit: unit}))
- ._popup.setLatLng(self._event.latlng);
+ ._popup.setLatLng(latlng);
}
+ },
- if (!self._container)
- return;
- if (self._following) {
- L.DomUtil.removeClass(self._container, "requesting");
- L.DomUtil.addClass(self._container, "active");
- L.DomUtil.addClass(self._container, "following");
+ /**
+ * Remove the marker from map.
+ */
+ _removeMarker: function() {
+ this._layer.clearLayers();
+ this._marker = undefined;
+ this._circle = undefined;
+ },
+
+ /**
+ * Unload the plugin and all event listeners.
+ * Kind of the opposite of onAdd.
+ */
+ _unload: function() {
+ this.stop();
+ this._map.off('unload', this._unload, this);
+ },
+
+ /**
+ * Sets the compass heading
+ */
+ _setCompassHeading: function(angle) {
+ if (!isNaN(parseFloat(angle)) && isFinite(angle)) {
+ angle = Math.round(angle);
+
+ this._compassHeading = angle;
+ L.Util.requestAnimFrame(this._drawCompass, this);
} else {
- L.DomUtil.removeClass(self._container, "requesting");
- L.DomUtil.addClass(self._container, "active");
- L.DomUtil.removeClass(self._container, "following");
+ this._compassHeading = null;
}
- };
+ },
+
+ /**
+ * If the compass fails calibration just fail safely and remove the compass
+ */
+ _onCompassNeedsCalibration: function() {
+ this._setCompassHeading();
+ },
- var resetVariables = function() {
- self._active = false;
- self._locateOnNextLocationFound = self.options.setView;
- self._following = false;
- };
+ /**
+ * Process and normalise compass events
+ */
+ _onDeviceOrientation: function(e) {
+ if (!this._active) {
+ return;
+ }
- resetVariables();
+ if (e.webkitCompassHeading) {
+ // iOS
+ this._setCompassHeading(e.webkitCompassHeading);
+ } else if (e.absolute && e.alpha) {
+ // Android
+ this._setCompassHeading(360 - e.alpha)
+ }
+ },
- var stopLocate = function() {
- map.stopLocate();
- map.off('dragstart', stopFollowing);
+ /**
+ * Calls deactivate and dispatches an error.
+ */
+ _onLocationError: function(err) {
+ // ignore time out error if the location is watched
+ if (err.code == 3 && this.options.locateOptions.watch) {
+ return;
+ }
- L.DomUtil.removeClass(self._container, "requesting");
- L.DomUtil.removeClass(self._container, "active");
- L.DomUtil.removeClass(self._container, "following");
- resetVariables();
+ this.stop();
+ this.options.onLocationError(err, this);
+ },
- self._layer.clearLayers();
- self._circleMarker = undefined;
- self._circle = undefined;
- };
+ /**
+ * Stores the received event and updates the marker.
+ */
+ _onLocationFound: function(e) {
+ // no need to do anything if the location has not changed
+ if (this._event &&
+ (this._event.latlng.lat === e.latlng.lat &&
+ this._event.latlng.lng === e.latlng.lng &&
+ this._event.accuracy === e.accuracy)) {
+ return;
+ }
- var onLocationError = function (err) {
- // ignore time out error if the location is watched
- if (err.code == 3 && this._locateOptions.watch) {
+ if (!this._active) {
+ // we may have a stray event
return;
}
- stopLocate();
- self.options.onLocationError(err);
- };
+ this._event = e;
- // event hooks
- map.on('locationfound', onLocationFound, self);
- map.on('locationerror', onLocationError, self);
+ this._drawMarker();
+ this._updateContainerStyle();
- return container;
- }
-});
+ switch (this.options.setView) {
+ case 'once':
+ if (this._justClicked) {
+ this.setView();
+ }
+ break;
+ case 'untilPan':
+ if (!this._userPanned) {
+ this.setView();
+ }
+ break;
+ case 'untilPanOrZoom':
+ if (!this._userPanned && !this._userZoomed) {
+ this.setView();
+ }
+ break;
+ case 'always':
+ this.setView();
+ break;
+ case false:
+ // don't set the view
+ break;
+ }
-L.Map.addInitHook(function () {
- if (this.options.locateControl) {
- this.locateControl = L.control.locate();
- this.addControl(this.locateControl);
- }
-});
+ this._justClicked = false;
+ },
+
+ /**
+ * When the user drags. Need a separate event so we can bind and unbind event listeners.
+ */
+ _onDrag: function() {
+ // only react to drags once we have a location
+ if (this._event && !this._ignoreEvent) {
+ this._userPanned = true;
+ this._updateContainerStyle();
+ this._drawMarker();
+ }
+ },
+
+ /**
+ * When the user zooms. Need a separate event so we can bind and unbind event listeners.
+ */
+ _onZoom: function() {
+ // only react to drags once we have a location
+ if (this._event && !this._ignoreEvent) {
+ this._userZoomed = true;
+ this._updateContainerStyle();
+ this._drawMarker();
+ }
+ },
+
+ /**
+ * After a zoom ends update the compass and handle sideways zooms
+ */
+ _onZoomEnd: function() {
+ if (this._event) {
+ this._drawCompass();
+ }
+
+ if (this._event && !this._ignoreEvent) {
+ // If we have zoomed in and out and ended up sideways treat it as a pan
+ if (!this._map.getBounds().pad(-.3).contains(this._marker.getLatLng())) {
+ this._userPanned = true;
+ this._updateContainerStyle();
+ this._drawMarker();
+ }
+ }
+ },
+
+ /**
+ * Compute whether the map is following the user location with pan and zoom.
+ */
+ _isFollowing: function() {
+ if (!this._active) {
+ return false;
+ }
+
+ if (this.options.setView === 'always') {
+ return true;
+ } else if (this.options.setView === 'untilPan') {
+ return !this._userPanned;
+ } else if (this.options.setView === 'untilPanOrZoom') {
+ return !this._userPanned && !this._userZoomed;
+ }
+ },
+
+ /**
+ * Check if location is in map bounds
+ */
+ _isOutsideMapBounds: function() {
+ if (this._event === undefined) {
+ return false;
+ }
+ return this._map.options.maxBounds &&
+ !this._map.options.maxBounds.contains(this._event.latlng);
+ },
+
+ /**
+ * Toggles button class between following and active.
+ */
+ _updateContainerStyle: function() {
+ if (!this._container) {
+ return;
+ }
+
+ if (this._active && !this._event) {
+ // active but don't have a location yet
+ this._setClasses('requesting');
+ } else if (this._isFollowing()) {
+ this._setClasses('following');
+ } else if (this._active) {
+ this._setClasses('active');
+ } else {
+ this._cleanClasses();
+ }
+ },
+
+ /**
+ * Sets the CSS classes for the state.
+ */
+ _setClasses: function(state) {
+ if (state == 'requesting') {
+ removeClasses(this._container, "active following");
+ addClasses(this._container, "requesting");
+
+ removeClasses(this._icon, this.options.icon);
+ addClasses(this._icon, this.options.iconLoading);
+ } else if (state == 'active') {
+ removeClasses(this._container, "requesting following");
+ addClasses(this._container, "active");
+
+ removeClasses(this._icon, this.options.iconLoading);
+ addClasses(this._icon, this.options.icon);
+ } else if (state == 'following') {
+ removeClasses(this._container, "requesting");
+ addClasses(this._container, "active following");
+
+ removeClasses(this._icon, this.options.iconLoading);
+ addClasses(this._icon, this.options.icon);
+ }
+ },
+
+ /**
+ * Removes all classes from button.
+ */
+ _cleanClasses: function() {
+ L.DomUtil.removeClass(this._container, "requesting");
+ L.DomUtil.removeClass(this._container, "active");
+ L.DomUtil.removeClass(this._container, "following");
+
+ removeClasses(this._icon, this.options.iconLoading);
+ addClasses(this._icon, this.options.icon);
+ },
+
+ /**
+ * Reinitializes state variables.
+ */
+ _resetVariables: function() {
+ // whether locate is active or not
+ this._active = false;
+
+ // true if the control was clicked for the first time
+ // we need this so we can pan and zoom once we have the location
+ this._justClicked = false;
+
+ // true if the user has panned the map after clicking the control
+ this._userPanned = false;
+
+ // true if the user has zoomed the map after clicking the control
+ this._userZoomed = false;
+ }
+ });
+
+ L.control.locate = function (options) {
+ return new L.Control.Locate(options);
+ };
-L.control.locate = function (options) {
- return new L.Control.Locate(options);
-};
+ return LocateControl;
+}, window));
projects / rails.git / blobdiff