/*	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;
            };
        }
    };
} ();