1 /* Copyright (c) 2009 Arnaud Renevier, Inc, published under the modified BSD
4 OpenLayers.Control.SypAttribution = OpenLayers.Class (OpenLayers.Control.Attribution, {
5 updateAttribution: function() {
6 var attributions = [SypStrings.propulsedByLink];
7 if (this.map && this.map.layers) {
8 for(var i=0, len=this.map.layers.length; i<len; i++) {
9 var layer = this.map.layers[i];
10 if (layer.attribution && layer.getVisibility()) {
11 attributions.push( layer.attribution );
14 this.div.innerHTML = attributions.join(this.separator);
21 ICON: "media/marker-normal.png",
22 SELECT_ICON: "media/marker-selected.png",
32 this.map = new OpenLayers.Map("map", {
34 new OpenLayers.Control.SypAttribution(),
35 new OpenLayers.Control.Navigation(),
36 new OpenLayers.Control.PanZoom(),
37 new OpenLayers.Control.Permalink()
39 projection: new OpenLayers.Projection("EPSG:900913"),
40 displayProjection: new OpenLayers.Projection("EPSG:4326")
43 this.baseLayer = this.createBaseLayer();
44 this.dataLayer = this.createDataLayer();
45 this.map.addLayers([this.baseLayer, this.dataLayer]);
47 this.selectControl = this.createSelectControl();
48 this.map.addControl(this.selectControl);
49 this.selectControl.activate();
51 if (!this.map.getCenter()) {
52 this.map.setCenter(new OpenLayers.LonLat(0, 0), 0);
56 createBaseLayer: function() {
57 return new OpenLayers.Layer.OSM("OSM");
60 createDataLayer: function(map) {
61 var defaultStyle = new OpenLayers.Style({
62 externalGraphic: this.Markers.ICON,
63 graphicHeight: "${height}"
66 height: function(feature) {
67 var defaultHeight = SYP.Markers.HEIGHT || 32;
68 var increase = 4 * (feature.attributes.count - 1);
69 return Math.min(defaultHeight + increase, 50);
73 var selectStyle = new OpenLayers.Style({
74 externalGraphic: this.Markers.SELECT_ICON,
75 graphicHeight: this.Markers.HEIGHT || 32
77 var styleMap = new OpenLayers.StyleMap (
78 {"default": defaultStyle,
79 "select": selectStyle});
81 var layer = new OpenLayers.Layer.GML("KML", "items.php",
84 new OpenLayers.Strategy.Cluster()
87 format: OpenLayers.Format.KML,
88 projection: this.map.displayProjection,
89 eventListeners: { scope: this,
90 loadend: this.dataLayerEndLoad
97 createSelectControl: function() {
98 var control = new OpenLayers.Control.SelectFeature(
100 onSelect: this.onFeatureSelect,
101 onUnselect: this.onFeatureUnselect,
108 dataLayerEndLoad: function() {
109 if (!this.checkForFeatures()) {
114 if (map.getControlsByClass("OpenLayers.Control.ArgParser")[0].lat
115 == undefined) { // map center was not set in ArgParser control.
116 var orig = this.Utils.mbr (this.dataLayer);
117 var centerBounds = new OpenLayers.Bounds();
119 var mapProj = map.getProjectionObject();
120 var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
122 var bottomLeft = new OpenLayers.LonLat(orig[0],orig[1]);
123 bottomLeft = bottomLeft.transform(sypOrigProj, mapProj);
124 var topRight = new OpenLayers.LonLat(orig[2],orig[3])
125 topRight = topRight.transform(sypOrigProj, mapProj);
127 centerBounds.extend(bottomLeft);
128 centerBounds.extend(topRight);
129 map.zoomToExtent(centerBounds);
133 checkForFeatures: function() {
134 var features = this.dataLayer.features;
135 if (features.length == 0) {
136 var message = SypStrings.noImageRegistered;
137 this.Utils.displayUserMessage(message, "warn");
139 return !!features.length;
142 createPopup: function(position, contentHTML) {
143 var popup = new OpenLayers.Popup.Anchored("popup",
149 popup.autoSize = true;
150 popup.backgroundColor = ""; // deal with it in css
151 popup.border = ""; // deal with it in css
152 popup.closeOnMove = true;
156 onFeatureUnselect: function (feature) {
157 var map = feature.layer.map;
158 var permaControl = map.getControlsByClass("OpenLayers.Control.Permalink");
159 if (permaControl[0]) {
160 permaControl[0].div.style.display = "";
162 if (!feature.popup) {
163 this.map.events.unregister("movestart", this, this._unselect);
166 var popup = feature.popup;
167 if (popup.visible()) {
172 onFeatureSelect: function(feature) {
173 var map = feature.layer.map;
174 if (feature.attributes.count > 1) {
175 this.unselect(feature);
176 var lonlat = new OpenLayers.LonLat(feature.geometry.x, feature.geometry.y);
177 map.setCenter(lonlat, map.zoom + 1);
180 var permaControl = map.getControlsByClass("OpenLayers.Control.Permalink");
181 if (permaControl[0]) {
182 permaControl[0].div.style.display = "none";
184 var popup = feature.popup;
187 if (sypSettings.popupNearfeature) {
188 popupPos = feature.geometry.getBounds().getCenterLonLat();
190 popupPos = SYP.Utils.brCorner(map, 8);
193 // we cannot reuse popup; we need to recreate it in order for IE
194 // expressions to work. Otherwise, we get a 0x0 image on second view.
199 if (feature.cluster[0].attributes.name) {
200 contentHTML = "<h2>" +
201 feature.cluster[0].attributes.name +
203 feature.cluster[0].attributes.description;
205 contentHTML = feature.cluster[0].attributes.description;
207 if (!contentHTML || !contentHTML.length) {
208 this.map.events.register("movestart", this, this._unselect = function () { this.unselect(feature)});
211 popup = SYP.createPopup(popupPos, contentHTML);
213 popup.hide = function () {
214 OpenLayers.Element.hide(this.div);
215 control.unselectAll();
218 feature.popup = popup;
219 var anchor = popup.div.getElementsByTagName("a")[0];
221 anchor.onclick = function() {
222 SYP.showBigImage(this.href);
228 showBigImage: function (href) {
230 document.getElementById('bigimg_container').style.display = "table";
232 document.getElementById('bigimg_container').style.display = "block";
234 var maxHeight = document.body.clientHeight * 0.9;
235 var maxWidth = document.body.clientWidth * 0.9;
236 document.getElementById('bigimg').style.height = "";
237 document.getElementById('bigimg').style.width = "";
238 document.getElementById('bigimg').style.maxHeight = maxHeight + "px";
239 document.getElementById('bigimg').style.maxWidth = maxWidth + "px";
240 document.getElementById('bigimg').onload = function () {
241 var icon = document.getElementById('bigimg_close');
242 icon.style.top = this.offsetTop;
243 icon.style.left = this.offsetLeft + this.clientWidth - icon.clientWidth;
245 var heightRatio = this.clientHeight / parseInt(this.style.maxHeight);
246 var widthRatio = this.clientWidth / parseInt(this.style.maxWidth);
247 if (heightRatio > 1 || widthRatio > 1) {
248 if (heightRatio > widthRatio) {
249 this.style.height = this.style.maxHeight;
251 this.style.width = this.style.maxWidth;
256 document.getElementById('bigimg').src = href;
259 closeBigImage: function() {
260 document.getElementById('bigimg').src = "";
261 document.getElementById('bigimg').parentNode.innerHTML = document.getElementById('bigimg').parentNode.innerHTML;
262 document.getElementById('bigimg_container').style.display = "none";
266 brCorner: function(map, margin) {
267 var bounds = map.calculateBounds();
268 var corner = new OpenLayers.LonLat(bounds.right, bounds.bottom);
269 var cornerAsPx = map.getPixelFromLonLat(corner);
270 cornerAsPx = cornerAsPx.add( -margin, -margin);
271 corner = map.getLonLatFromPixel(cornerAsPx);
275 /* minimum bounds rectangle containing all feature locations.
276 * FIXME: if two features are close, but separated by 180th meridian,
277 * their mbr will span the whole earth. Actually, 179° lon and -170°
278 * lon are considerated very near.
280 mbr: function (layer) {
284 var mapProj = map.getProjectionObject();
285 var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
287 for (var i =0; i < layer.features.length; i++) {
288 if (layer.features[i].cluster) {
289 features = features.concat(layer.features[i].cluster);
291 features = features.concat(layer.features);
300 if (features.length == 0) {
301 // keep default values
302 } else if (features.length == 1) {
303 // in case there's only one feature, we show an area of at least
305 var pos = features[0].geometry.getBounds().getCenterLonLat().clone();
306 var lonlat = pos.transform(mapProj, sypOrigProj);
308 minlon = Math.max (lonlat.lon - 2, -180);
309 maxlon = Math.min (lonlat.lon + 2, 180);
310 minlat = Math.max (lonlat.lat - 2, -90);
311 maxlat = Math.min (lonlat.lat + 2, 90);
313 for (var i = 0; i < features.length; i++) {
314 var pos = features[i].geometry.getBounds().getCenterLonLat().clone();
315 var lonlat = pos.transform(mapProj, sypOrigProj);
316 minlon = Math.min (lonlat.lon, minlon);
317 minlat = Math.min (lonlat.lat, minlat);
318 maxlon = Math.max (lonlat.lon, maxlon);
319 maxlat = Math.max (lonlat.lat, maxlat);
323 return [minlon, minlat, maxlon, maxlat];
327 displayUserMessage: function(message, status) {
328 var div = document.getElementById('message');
329 while (div.firstChild)
330 div.removeChild(div.firstChild);
331 var textNode = document.createTextNode(message);
334 div.style.color = "red";
337 div.style.color = "#FF8C00";
340 div.style.color = "green";
343 div.style.color = "black";
346 div.style.display = "block";
347 div.appendChild(textNode);
352 // if possible, determine language with HTTP_ACCEPT_LANGUAGE instead of
353 // navigator.language
354 if (OpenLayers.Lang[SypStrings.language]) {
355 OpenLayers.Lang.setCode(SypStrings.language);
359 OpenLayers.Console.userError = function(error) {
360 SYP.Utils.displayUserMessage(error, "error");
363 // sometimes, especially when cache is clear, firefox does not compute
364 // correctly popup size. That's because at the end of getRenderedDimensions,
365 // dimensions of image is not known. So, we work around that problem by setting
366 // image width and image height. That way, dimensions of image are set in
367 // innerHTML, and are therefore known in getRenderedDimensions
368 OpenLayers.Popup.Anchored.prototype.registerImageListeners = function() {
369 var onImgLoad = function() {
370 this.img.width = this.img.width;
371 this.img.height = this.img.height;
372 this.popup.updateSize();
373 OpenLayers.Event.stopObserving(
374 this.img, "load", this.img._onImageLoad
378 var images = this.contentDiv.getElementsByTagName("img");
379 for (var i = 0, len = images.length; i < len; i++) {
381 if (img.width == 0 || img.height == 0) {
388 img._onImgLoad = OpenLayers.Function.bind(onImgLoad, context);
390 OpenLayers.Event.observe(img, 'load', img._onImgLoad);