9f0a77aa92
git-svn-id: http://svn.openlayers.org/trunk/openlayers@846 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
57 lines
2.0 KiB
JavaScript
57 lines
2.0 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
|
|
* See http://svn.openlayers.org/trunk/openlayers/license.txt for the full
|
|
* text of the license. */
|
|
// @require: OpenLayers/Control.js
|
|
OpenLayers.Control.Permalink = Class.create();
|
|
OpenLayers.Control.Permalink.prototype =
|
|
Object.extend( new OpenLayers.Control(), {
|
|
|
|
element: null,
|
|
|
|
base: '',
|
|
|
|
initialize: function(element, base) {
|
|
OpenLayers.Control.prototype.initialize.apply(this, arguments);
|
|
this.element = element;
|
|
if (base) this.base = base;
|
|
},
|
|
|
|
draw: function() {
|
|
this.map.events.register( 'moveend', this, this.updateLink);
|
|
var args = this.getArgs();
|
|
if (args.lat && args.lon) {
|
|
this.map.setCenter(
|
|
new OpenLayers.LonLat(parseFloat(args.lon), parseFloat(args.lat))
|
|
);
|
|
}
|
|
if (args.zoom) {
|
|
this.map.zoomTo(parseInt(args.zoom));
|
|
}
|
|
},
|
|
|
|
getArgs: function() {
|
|
var args = new Object();
|
|
var query = location.search.substring(1); // Get query string.
|
|
var pairs = query.split("&"); // Break at ampersand. //+pjl
|
|
|
|
for(var i = 0; i < pairs.length; i++) {
|
|
var pos = pairs[i].indexOf('='); // Look for "name=value".
|
|
if (pos == -1) continue; // If not found, skip.
|
|
var argname = pairs[i].substring(0,pos); // Extract the name.
|
|
var value = pairs[i].substring(pos+1); // Extract the value.
|
|
args[argname] = unescape(value); // Store as a property.
|
|
}
|
|
return args; // Return the object.
|
|
},
|
|
|
|
updateLink: function() {
|
|
center = this.map.getCenter();
|
|
zoom = this.map.getZoom();
|
|
lat = Math.round(center.lat*100000)/100000;
|
|
lon = Math.round(center.lon*100000)/100000;
|
|
this.element.href = this.base+"?lat="+lat+"&lon="+lon+"&zoom="+zoom;
|
|
},
|
|
|
|
});
|
|
|