96 lines
2.5 KiB
JavaScript
96 lines
2.5 KiB
JavaScript
/**
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* eventHandler
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*
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* @author Icewind <icewind (at) derideal (dot) com>
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* @copyright 2009
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* @license http://www.gnu.org/licenses/gpl.html GNU Public License
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* @version 0.1
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*/
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/*event handling
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usage: document.events.add(node,type,function,arguments);
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or: node.addEvent(type,function,arguments);
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*/
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document.events=new Object;
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document.events.functions=Array();
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document.events.args=Array();
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document.events.add=function(element,type,func,args){
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if(!element.eventCallBacks){
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element.eventCallBacks=Array();
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}
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if(!element.eventCallBacks[type]){
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element.eventCallBacks[type]=Array();
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}
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if(args){
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if(!args.push){
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args=[args];
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}
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}
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if(!args){
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args=Array();
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}
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args.push('eventHolder');
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args.push('argHolder');
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if (type && element){
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//wrap the function in a function, otherwise it won't work if func is actually a callBack
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var funcId=document.events.functions.length;
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document.events.functions[funcId]=func;
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document.events.args[funcId]=args;
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eval('var callback=function(event,arg){document.events.callback.call(this,'+funcId+',event,arg)};');
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element.eventCallBacks[type].push(callback);
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if(element.addEventListener){
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var eventType=type;
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if(eventType.substr(0,2)=='on'){
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eventType=eventType.substr(2);
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}
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element.addEventListener(eventType,callback,false);
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}else if(element.attachEvent){
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element.attachEvent(type,callback);
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}
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return callback;
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}
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}
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document.events.remove=function(element,type,func){
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if(element.removeEventListener){
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if(type.substr(0,2)=='on'){
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type=type.substr(2);
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}
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element.removeEventListener(type,func,false);
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}else if(element.detachEvent){
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element.detachEvent(type,func)
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}
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}
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document.events.callback=function(funcId,event,arg){
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if(!event)var event=window.event;
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var args=document.events.args[funcId];
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args[args.length-2]=event;
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args[args.length-1]=arg;
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result=document.events.functions[funcId].apply(this,args);
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if(result===false){
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if(event.preventDefault){
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event.preventDefault();
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};
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}
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return result;
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}
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document.events.trigger=function(element,type,event,args){
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var callbacks=element.eventCallBacks[type];
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for(var i=0;i<callbacks.length;i++){
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callbacks[i].call(element,event,args);
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}
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}
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Node.prototype.addEvent=function(type,func,arguments){
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return document.events.add(this,type,func,arguments);
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}
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Node.prototype.removeEvent=function(type,func){
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document.events.remove(this,type,func);
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}
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Node.prototype.triggerEvent=function(type,event,arg){
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return document.events.trigger(this,type,event,arg);
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} |