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Refactored event handling to allow unregistration of event listeners.

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@570 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Schuyler Erle
2006-06-12 00:16:02 +00:00
parent abc1fd092e
commit 55937eeb1f
1 changed files with 17 additions and 2 deletions
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19
lib/OpenLayers/Events.js
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@@ -56,10 +56,24 @@ OpenLayers.Events.prototype = {
* @param {Function} func
*/
register: function (type, obj, func) {
if (func == null) {
obj = this.object;
func = obj;
}
var listeners = this.listeners[type];
listeners.push( func.bindAsEventListener(obj) );
listeners.push( {obj: obj, func: func} );
},
unregister: function (type, obj, func) {
var listeners = this.listeners[type];
for (var i = 0; i < listeners.length; i++) {
if (listeners[i].obj == obj && listeners[i].type == type) {
listeners.splice(i, 1);
break;
}
}
},
remove: function(type) {
this.listeners[type].pop();
},
@@ -100,7 +114,8 @@ OpenLayers.Events.prototype = {
var listeners = this.listeners[type];
for (var i = 0; i < listeners.length; i++) {
var callback = listeners[i];
callback(evt);
var continueChain = callback.func.call(callback.obj, evt);
if (continueChain != null && !continueChain) break;
}
}
};