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cleanup event handling

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This commit is contained in:
Robin Appelman 2011-01-20 16:16:35 +01:00
parent 66a7c35d80
commit 9805336c0a
1 changed files with 11 additions and 59 deletions
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70
js/lib_event.js
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@ -1,12 +1,3 @@
/**
* eventHandler
*
* @author Icewind <icewind (at) derideal (dot) com>
* @copyright 2009
* @license http://www.gnu.org/licenses/gpl.html GNU Public License
* @version 0.1
*/
/*event handling
usage: document.events.add(node,type,function,arguments);
or: node.addEvent(type,function,arguments);
@ -17,40 +8,25 @@ document.events.functions=Array();
document.events.args=Array();
document.events.add=function(element,type,func,args){
if(!element.eventCallBacks){
element.eventCallBacks=Array();
}
if(!element.eventCallBacks[type]){
element.eventCallBacks[type]=Array();
}
if(args){
if(!args.push){
args=[args];
}
}
if(!args){
args=Array();
}
args.push('eventHolder');
args.push('argHolder');
args=args||[];
if (type && element){
//wrap the function in a function, otherwise it won't work if func is actually a callBack
var funcId=document.events.functions.length;
document.events.functions[funcId]=func;
document.events.args[funcId]=args;
eval('var callback=function(event,arg){document.events.callback.call(this,'+funcId+',event,arg)};');
element.eventCallBacks[type].push(callback);
args.foreach(function(argument){
func.bind(argument);
})
if(element.addEventListener){
var eventType=type;
if(eventType.substr(0,2)=='on'){
eventType=eventType.substr(2);
if(type.substr(0,2)=='on'){
type=type.substr(2);
}
element.addEventListener(eventType,callback,false);
element.addEventListener(type,func,false);
}else if(element.attachEvent){
element.attachEvent(type,callback);
element.attachEvent(type,func);
}
return callback;
return func;
}
}
document.events.remove=function(element,type,func){
@ -64,33 +40,9 @@ document.events.remove=function(element,type,func){
}
}
document.events.callback=function(funcId,event,arg){
if(!event)var event=window.event;
var args=document.events.args[funcId];
args[args.length-2]=event;
args[args.length-1]=arg;
result=document.events.functions[funcId].apply(this,args);
if(result===false){
if(event.preventDefault){
event.preventDefault();
};
}
return result;
}
document.events.trigger=function(element,type,event,args){
var callbacks=element.eventCallBacks[type];
for(var i=0;i<callbacks.length;i++){
callbacks[i].call(element,event,args);
}
}
Node.prototype.addEvent=function(type,func,arguments){
return document.events.add(this,type,func,arguments);
Node.prototype.addEvent=function(type,func,args){
return document.events.add(this,type,func,args);
}
Node.prototype.removeEvent=function(type,func){
document.events.remove(this,type,func);
}
Node.prototype.triggerEvent=function(type,event,arg){
return document.events.trigger(this,type,event,arg);
}