/*  EventCache Version 1.0
    Copyright 2005 Mark Wubben

    Provides a way for automagically removing events from nodes and thus preventing memory leakage.
    See <http://novemberborn.net/javascript/event-cache> for more information.
    
    This software is licensed under the CC-GNU LGPL <http://creativecommons.org/licenses/LGPL/2.1/>
*/

/*  Implement array.push for browsers which don't support it natively.
    Please remove this if it's already in other code */
if(Array.prototype.push == null){
    Array.prototype.push = function(){
        for(var i = 0; i < arguments.length; i++){
            this[this.length] = arguments[i];
        };
        return this.length;
    };
};

/*  Event Cache uses an anonymous function to create a hidden scope chain.
    This is to prevent scoping issues. */
var EventCache = function(){
    var listEvents = [];
    
    return {
        listEvents : listEvents,
    
        add : function(node, sEventName, fHandler, bCapture){
            listEvents.push(arguments);
        },
    
        flush : function(){
            var i, item;
            for(i = listEvents.length - 1; i >= 0; i = i - 1){
                item = listEvents[i];
                
                if(item[0].removeEventListener){
                    item[0].removeEventListener(item[1], item[2], item[3]);
                };
                
                /* From this point on we need the event names to be prefixed with 'on" */
                if(item[1].substring(0, 2) != "on"){
                    item[1] = "on" + item[1];
                };
                
                if(item[0].detachEvent){
                    item[0].detachEvent(item[1], item[2]);
                };
                
                item[0][item[1]] = null;
            };
        }
    };
}();