3 //= require jquery.autogrowtextarea
4 //= require jquery.timers
5 //= require i18n/translations
9 * Called as the user scrolls/zooms around to aniplate hrefs of the
10 * view tab and various other links
12 function updatelinks(lon,lat,zoom,layers,minlon,minlat,maxlon,maxlat,objtype,objid) {
13 var decimals = Math.pow(10, Math.floor(zoom/3));
16 lat = Math.round(lat * decimals) / decimals;
17 lon = Math.round(lon * decimals) / decimals;
20 minlon = Math.round(minlon * decimals) / decimals;
21 minlat = Math.round(minlat * decimals) / decimals;
22 maxlon = Math.round(maxlon * decimals) / decimals;
23 maxlat = Math.round(maxlat * decimals) / decimals;
26 $(".geolink").each(function (index, link) {
27 var args = getArgs(link.href);
29 if ($(link).hasClass("llz")) {
33 } else if (minlon && $(link).hasClass("bbox")) {
34 args.bbox = minlon + "," + minlat + "," + maxlon + "," + maxlat;
37 if (layers && $(link).hasClass("layers")) {
41 if (objtype && $(link).hasClass("object")) {
42 args[objtype] = objid;
45 var classes = $(link).attr("class").split(" ");
47 $(classes).each(function (index, classname) {
48 if (match = classname.match(/^minzoom([0-9]+)$/)) {
49 var minzoom = match[1];
50 var name = link.id.replace(/anchor$/, "");
52 $(link).off("click.minzoom");
54 if (zoom >= minzoom) {
55 $(link).attr("title", I18n.t("javascripts.site." + name + "_tooltip"));
56 $(link).removeClass("disabled");
58 $(link).on("click.minzoom", function () { alert(I18n.t("javascripts.site." + name + "_zoom_alert")); return false; });
59 $(link).attr("title", I18n.t("javascripts.site." + name + "_disabled_tooltip"));
60 $(link).addClass("disabled");
65 link.href = setArgs(link.href, args);
68 $("#shortlinkanchor").each(function () {
69 var args = getArgs(this.href);
70 var code = makeShortCode(lat, lon, zoom);
71 var prefix = shortlinkPrefix();
73 // Add ?{node,way,relation}=id to the arguments
74 if (objtype && objid) {
75 args[objtype] = objid;
78 // This is a hack to omit the default mapnik layer from the shortlink.
79 if (layers && layers != "M") {
86 // Here we're assuming that all parameters but ?layers= and
87 // ?{node,way,relation}= can be safely omitted from the shortlink
88 // which encodes lat/lon/zoom. If new URL parameters are added to
89 // the main slippy map this needs to be changed.
90 if (args.layers || args[objtype]) {
91 this.href = setArgs(prefix + "/go/" + code, args);
93 this.href = prefix + "/go/" + code;
99 * Get the URL prefix to use for a short link
101 function shortlinkPrefix() {
102 if (window.location.hostname.match(/^www\.openstreetmap\.org/i)) {
103 return "http://osm.org";
110 * Called to get the arguments from a URL as a hash.
112 function getArgs(url) {
114 var querystart = url.indexOf("?");
116 if (querystart >= 0) {
117 var querystring = url.substring(querystart + 1);
118 var queryitems = querystring.split("&");
120 for (var i = 0; i < queryitems.length; i++) {
121 if (match = queryitems[i].match(/^(.*)=(.*)$/)) {
122 args[unescape(match[1])] = unescape(match[2]);
124 args[unescape(queryitems[i])] = null;
133 * Called to set the arguments on a URL from the given hash.
135 function setArgs(url, args) {
139 if (args[arg] == null) {
140 queryitems.push(escape(arg));
142 queryitems.push(escape(arg) + "=" + escape(args[arg]));
146 return url.replace(/\?.*$/, "") + "?" + queryitems.join("&");
150 * Called to interlace the bits in x and y, making a Morton code.
152 function interlace(x, y) {
153 x = (x | (x << 8)) & 0x00ff00ff;
154 x = (x | (x << 4)) & 0x0f0f0f0f;
155 x = (x | (x << 2)) & 0x33333333;
156 x = (x | (x << 1)) & 0x55555555;
158 y = (y | (y << 8)) & 0x00ff00ff;
159 y = (y | (y << 4)) & 0x0f0f0f0f;
160 y = (y | (y << 2)) & 0x33333333;
161 y = (y | (y << 1)) & 0x55555555;
167 * Called to create a short code for the short link.
169 function makeShortCode(lat, lon, zoom) {
170 char_array = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_~";
171 var x = Math.round((lon + 180.0) * ((1 << 30) / 90.0));
172 var y = Math.round((lat + 90.0) * ((1 << 30) / 45.0));
173 // JavaScript only has to keep 32 bits of bitwise operators, so this has to be
174 // done in two parts. each of the parts c1/c2 has 30 bits of the total in it
175 // and drops the last 4 bits of the full 64 bit Morton code.
177 var c1 = interlace(x >>> 17, y >>> 17), c2 = interlace((x >>> 2) & 0x7fff, (y >>> 2) & 0x7fff);
178 for (var i = 0; i < Math.ceil((zoom + 8) / 3.0) && i < 5; ++i) {
179 digit = (c1 >> (24 - 6 * i)) & 0x3f;
180 str += char_array.charAt(digit);
182 for (var i = 5; i < Math.ceil((zoom + 8) / 3.0); ++i) {
183 digit = (c2 >> (24 - 6 * (i - 5))) & 0x3f;
184 str += char_array.charAt(digit);
186 for (var i = 0; i < ((zoom + 8) % 3); ++i) {
193 * Click handler to switch a rich text control to preview mode
195 function previewRichtext(event) {
196 var editor = $(this).parents(".richtext_container").find("textarea");
197 var preview = $(this).parents(".richtext_container").find(".richtext_preview");
198 var width = editor.outerWidth() - preview.outerWidth() + preview.innerWidth();
199 var minHeight = editor.outerHeight() - preview.outerHeight() + preview.innerHeight();
201 if (preview.contents().length == 0) {
202 preview.oneTime(500, "loading", function () {
203 preview.addClass("loading");
206 preview.load(editor.attr("data-preview-url"), { text: editor.val() }, function () {
207 preview.stopTime("loading");
208 preview.removeClass("loading");
213 preview.width(width);
214 preview.css("min-height", minHeight + "px");
217 $(this).siblings(".richtext_doedit").prop("disabled", false);
218 $(this).prop("disabled", true);
220 event.preventDefault();
224 * Click handler to switch a rich text control to edit mode
226 function editRichtext(event) {
227 var editor = $(this).parents(".richtext_container").find("textarea");
228 var preview = $(this).parents(".richtext_container").find(".richtext_preview");
233 $(this).siblings(".richtext_dopreview").prop("disabled", false);
234 $(this).prop("disabled", true);
236 event.preventDefault();
240 * Setup any rich text controls
242 $(document).ready(function () {
243 $(".richtext_preview").hide();
244 $(".richtext_content textarea").change(function () {
245 $(this).parents(".richtext_container").find(".richtext_preview").empty();
247 $(".richtext_doedit").prop("disabled", true);
248 $(".richtext_dopreview").prop("disabled", false);
249 $(".richtext_doedit").click(editRichtext);
250 $(".richtext_dopreview").click(previewRichtext);