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allow permalink to store layer information. update tests so they pass

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@1621 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
euzuro
2006-10-06 00:44:14 +00:00
parent f5d644733b
commit dd2a5df781
2 changed files with 73 additions and 36 deletions
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103
lib/OpenLayers/Control/Permalink.js
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@@ -17,6 +17,15 @@ OpenLayers.Control.Permalink.prototype =
/** @type String */
base: '',
/** @type OpenLayers.LonLat */
center: null,
/** @type int */
zoom: null,
/** @type Array */
layers: null,
/**
* @constructor
*
@@ -26,7 +35,9 @@ OpenLayers.Control.Permalink.prototype =
initialize: function(element, base) {
OpenLayers.Control.prototype.initialize.apply(this, arguments);
this.element = element;
if (base) this.base = base;
if (base) {
this.base = base;
}
},
/**
@@ -35,25 +46,27 @@ OpenLayers.Control.Permalink.prototype =
draw: function() {
OpenLayers.Control.prototype.draw.apply(this, arguments);
var args = OpenLayers.Util.getArgs();
if (args.lat && args.lon) {
if (this.map.baseLayer) {
this.map.setCenter(
new OpenLayers.LonLat(parseFloat(args.lon), parseFloat(args.lat))
);
} else {
this.centerData = new OpenLayers.LonLat(
parseFloat(args.lon),
parseFloat(args.lat));
this.map.events.register( 'changebaselayer', this, this.setCenter);
this.center = new OpenLayers.LonLat(parseFloat(args.lon),
parseFloat(args.lat));
if (args.zoom) {
this.zoom = parseInt(args.zoom);
}
// when we add a new baselayer to see when we can set the center
this.map.events.register('changebaselayer', this, this.setCenter);
this.setCenter();
}
if (args.zoom) {
if (this.map.baseLayer) {
this.map.zoomTo(parseInt(args.zoom));
} else {
this.zoomData = parseInt(args.zoom);
}
if (args.layers) {
this.layers = args.layers;
// when we add a new layer, set its visibility
this.map.events.register('addlayer', this, this.configureLayers);
this.configureLayers();
}
if (!this.element) {
this.element = document.createElement("a");
this.div.style.right = "3px";
@@ -67,7 +80,7 @@ OpenLayers.Control.Permalink.prototype =
this.element.href="";
this.div.appendChild(this.element);
}
this.map.events.register( 'moveend', this, this.updateLink);
this.map.events.register('moveend', this, this.updateLink);
return this.div;
},
@@ -79,34 +92,58 @@ OpenLayers.Control.Permalink.prototype =
var zoom = "zoom=" + this.map.getZoom();
var lat = "lat=" + Math.round(center.lat*100000)/100000;
var lon = "lon=" + Math.round(center.lon*100000)/100000;
var layers = "layers=";
var first = true;
for(var i=0; i< this.map.layers.length; i++) {
var layer = this.map.layers[i];
if (layer.getVisibility()) {
if (!first) {
layers += ",";
}
layers += i;
first = false;
if (layer.isBaseLayer) {
layers += (layer == this.map.baseLayer) ? "B" : "0";
} else {
layers += (layer.getVisibility()) ? "T" : "F";
}
}
var href = this.base + "?" + lat + "&" + lon + "&" +
zoom + "&" + layers;
var href = this.base + "?" + lat + "&" + lon + "&" + zoom +
"&" + layers;
this.element.href = href;
},
/** As soon as a baseLayer has been loaded, we center and zoom
* ...and remove the handler.
*/
setCenter: function() {
if (this.map.baseLayer && this.centerData) {
this.map.setCenter(this.centerData, this.zoomData ? this.zoomData : null);
this.centerData = null;
if (this.map.baseLayer) {
//dont need to listen for this one anymore
this.map.events.unregister('changebaselayer', this,
this.setCenter);
this.map.setCenter(this.center, this.zoom);
}
},
/** As soon as all the layers are loaded, cycle through them and
* hide or show them.
*/
configureLayers: function() {
if (this.layers.length == this.map.layers.length) {
this.map.events.unregister('addlayer', this, this.configureLayers);
for(var i=0; i < this.layers.length; i++) {
var layer = this.map.layers[i];
var c = this.layers.charAt(i);
if (c == "B") {
this.map.setBaseLayer(layer);
} else if ( (c == "T") || (c == "F") ) {
layer.setVisibility(c == "T");
}
}
}
},
/** @final @type String */
CLASS_NAME: "OpenLayers.Control.Permalink"
});