62 lines
1.8 KiB
JavaScript
62 lines
1.8 KiB
JavaScript
/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU AFFERO General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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or see http://www.gnu.org/licenses/agpl.txt.
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*/
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// OSRM EventHandler
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// [adds simple event handling: other classes can derive from this class to acquire custom event handling]
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OSRM.EventHandler = function() {
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this._listeners = {};
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};
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OSRM.extend( OSRM.EventHandler, {
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// add listener
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addListener: function(type, listener) {
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if( this._listeners[type] == undefined)
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this._listeners[type] = [];
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this._listeners[type].push(listener);
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},
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//remove event listener
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removeListener: function(type, listener) {
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if( this._listeners[type] != undefined) {
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for(var i=0; i<this._listeners[type].length; i++)
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if( this._listeners[type][i] == listener) {
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this._listeners[type].splice(i,1);
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break;
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}
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}
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},
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// fire event
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fire: function(event) {
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if( typeof event == "string")
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event = {type:event};
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if( !event.target )
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event.target = this;
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if( !event.type )
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throw new Error("event object missing type property!");
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if( this._listeners[type] != undefined)
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for(var listener in this._listeners[event.type])
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listener.call(this, event);
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}
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});
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