# EventManager.js

    /**
     * @class Ext.EventManager
     * Registers event handlers that want to receive a normalized EventObject instead of the standard browser event and provides
     * several useful events directly.
     * See {@link Ext.EventObject} for more details on normalized event objects.
     * @singleton
     */
    Ext.EventManager = function(){
        var docReadyEvent, docReadyProcId, docReadyState = false;
        var resizeEvent, resizeTask, textEvent, textSize;
        var E = Ext.lib.Event;
        var D = Ext.lib.Dom;
        // fix parser confusion
        var xname = 'Ex' + 't';

        var elHash = {};

        var addListener = function(el, ename, fn, wrap, scope){
            var id = Ext.id(el);
            if(!elHash[id]){
                elHash[id] = {};
            }
            var es = elHash[id];
            if(!es[ename]){
                es[ename] = [];
            }
            var ls = es[ename];
            ls.push({
                id: id,
                ename: ename,
                fn: fn,
                wrap: wrap,
                scope: scope
            });

             E.on(el, ename, wrap);

            if(ename == "mousewheel" && el.addEventListener){ // workaround for jQuery
                el.addEventListener("DOMMouseScroll", wrap, false);
                E.on(window, 'unload', function(){
                    el.removeEventListener("DOMMouseScroll", wrap, false);
                });
            }
            if(ename == "mousedown" && el == document){ // fix stopped mousedowns on the document
                Ext.EventManager.stoppedMouseDownEvent.addListener(wrap);
            }
        }

        var removeListener = function(el, ename, fn, scope){
            el = Ext.getDom(el);

            var id = Ext.id(el), es = elHash[id], wrap;
            if(es){
                var ls = es[ename], l;
                if(ls){
                    for(var i = 0, len = ls.length; i < len; i++){
                        l = ls[i];
                        if(l.fn == fn && (!scope || l.scope == scope)){
                            wrap = l.wrap;
                            E.un(el, ename, wrap);
                            ls.splice(i, 1);
                            break;
                        }
                    }
                }
            }
            if(ename == "mousewheel" && el.addEventListener && wrap){
                el.removeEventListener("DOMMouseScroll", wrap, false);
            }
            if(ename == "mousedown" && el == document && wrap){ // fix stopped mousedowns on the document
                Ext.EventManager.stoppedMouseDownEvent.removeListener(wrap);
            }
        }

        var removeAll = function(el){
            el = Ext.getDom(el);
            var id = Ext.id(el), es = elHash[id], ls;
            if(es){
                for(var ename in es){
                    if(es.hasOwnProperty(ename)){
                        ls = es[ename];
                        for(var i = 0, len = ls.length; i < len; i++){
                            E.un(el, ename, ls[i].wrap);
                            ls[i] = null;
                        }
                    }
                    es[ename] = null;
                }
                delete elHash[id];
            }
        }

        var fireDocReady = function(){
            if(!docReadyState){
                docReadyState = true;
                Ext.isReady = true;
                if(docReadyProcId){
                    clearInterval(docReadyProcId);
                }
                if(Ext.isGecko || Ext.isOpera) {
                    document.removeEventListener("DOMContentLoaded", fireDocReady, false);
                }
                if(Ext.isIE){
                    var defer = document.getElementById("ie-deferred-loader");
                    if(defer){
                        defer.onreadystatechange = null;
                        defer.parentNode.removeChild(defer);
                    }
                }
                if(docReadyEvent){
                    docReadyEvent.fire();
                    docReadyEvent.clearListeners();
                }
            }
        };

        var initDocReady = function(){
            docReadyEvent = new Ext.util.Event();
            if(Ext.isGecko || Ext.isOpera) {
                document.addEventListener("DOMContentLoaded", fireDocReady, false);
            }else if(Ext.isIE){
                document.write("<s"+'cript id="ie-deferred-loader" defer="defer" src="/'+'/:"></s'+"cript>");
                var defer = document.getElementById("ie-deferred-loader");
                defer.onreadystatechange = function(){
                    if(this.readyState == "complete"){
                        fireDocReady();
                    }
                };
            }else if(Ext.isWebKit){
                docReadyProcId = setInterval(function(){
                    var rs = document.readyState;
                    if(rs == "complete") {
                        fireDocReady();
                     }
                }, 10);
            }
            // no matter what, make sure it fires on load
            E.on(window, "load", fireDocReady);
        };

        var createBuffered = function(h, o){
            var task = new Ext.util.DelayedTask(h);
            return function(e){
                // create new event object impl so new events don't wipe out properties
                e = new Ext.EventObjectImpl(e);
                task.delay(o.buffer, h, null, [e]);
            };
        };

        var createSingle = function(h, el, ename, fn, scope){
            return function(e){
                Ext.EventManager.removeListener(el, ename, fn, scope);
                h(e);
            };
        };

        var createDelayed = function(h, o){
            return function(e){
                // create new event object impl so new events don't wipe out properties
                e = new Ext.EventObjectImpl(e);
                setTimeout(function(){
                    h(e);
                }, o.delay || 10);
            };
        };

        var listen = function(element, ename, opt, fn, scope){
            var o = (!opt || typeof opt == "boolean") ? {} : opt;
            fn = fn || o.fn; scope = scope || o.scope;
            var el = Ext.getDom(element);
            if(!el){
                throw "Error listening for \"" + ename + '\". Element "' + element + '" doesn\'t exist.';
            }
            var h = function(e){
                // prevent errors while unload occurring
                if(!window[xname]){
                    return;
                }
                e = Ext.EventObject.setEvent(e);
                var t;
                if(o.delegate){
                    t = e.getTarget(o.delegate, el);
                    if(!t){
                        return;
                    }
                }else{
                    t = e.target;
                }
                if(o.stopEvent === true){
                    e.stopEvent();
                }
                if(o.preventDefault === true){
                   e.preventDefault();
                }
                if(o.stopPropagation === true){
                    e.stopPropagation();
                }

                if(o.normalized === false){
                    e = e.browserEvent;
                }

                fn.call(scope || el, e, t, o);
            };
            if(o.delay){
                h = createDelayed(h, o);
            }
            if(o.single){
                h = createSingle(h, el, ename, fn, scope);
            }
            if(o.buffer){
                h = createBuffered(h, o);
            }

            addListener(el, ename, fn, h, scope);
            return h;
        };

        var propRe = /^(?:scope|delay|buffer|single|stopEvent|preventDefault|stopPropagation|normalized|args|delegate)$/,
            curWidth = 0,
            curHeight = 0;
        var pub = {

        /**
         * Appends an event handler to an element.  The shorthand version {@link #on} is equivalent.  Typically you will
         * use {@link Ext.Element#addListener} directly on an Element in favor of calling this version.
         * @param {String/HTMLElement} el The html element or id to assign the event handler to
         * @param {String} eventName The type of event to listen for
         * @param {Function} handler The handler function the event invokes This function is passed
         * the following parameters:<ul>
         * <li>evt : EventObject<div class="sub-desc">The {@link Ext.EventObject EventObject} describing the event.</div></li>
         * <li>t : Element<div class="sub-desc">The {@link Ext.Element Element} which was the target of the event.
         * Note that this may be filtered by using the <tt>delegate</tt> option.</div></li>
         * <li>o : Object<div class="sub-desc">The options object from the addListener call.</div></li>
         * </ul>
         * @param {Object} scope (optional) The scope in which to execute the handler
         * function (the handler function's "this" context)
         * @param {Object} options (optional) An object containing handler configuration properties.
         * This may contain any of the following properties:<ul>
         * <li>scope {Object} : The scope in which to execute the handler function. The handler function's "this" context.</li>
         * <li>delegate {String} : A simple selector to filter the target or look for a descendant of the target</li>
         * <li>stopEvent {Boolean} : True to stop the event. That is stop propagation, and prevent the default action.</li>
         * <li>preventDefault {Boolean} : True to prevent the default action</li>
         * <li>stopPropagation {Boolean} : True to prevent event propagation</li>
         * <li>normalized {Boolean} : False to pass a browser event to the handler function instead of an Ext.EventObject</li>
         * <li>delay {Number} : The number of milliseconds to delay the invocation of the handler after te event fires.</li>
         * <li>single {Boolean} : True to add a handler to handle just the next firing of the event, and then remove itself.</li>
         * <li>buffer {Number} : Causes the handler to be scheduled to run in an {@link Ext.util.DelayedTask} delayed
         * by the specified number of milliseconds. If the event fires again within that time, the original
         * handler is <em>not</em> invoked, but the new handler is scheduled in its place.</li>
         * </ul><br>
         * <p>See {@link Ext.Element#addListener} for examples of how to use these options.</p>
         */
            addListener : function(element, eventName, fn, scope, options){
                if(typeof eventName == "object"){
                    var o = eventName;
                    for(var e in o){
                        if(propRe.test(e)){
                            continue;
                        }
                        if(typeof o[e] == "function"){
                            // shared options
                            listen(element, e, o, o[e], o.scope);
                        }else{
                            // individual options
                            listen(element, e, o[e]);
                        }
                    }
                    return;
                }
                return listen(element, eventName, options, fn, scope);
            },

            /**
             * Removes an event handler from an element.  The shorthand version {@link #un} is equivalent.  Typically
             * you will use {@link Ext.Element#removeListener} directly on an Element in favor of calling this version.
             * @param {String/HTMLElement} el The id or html element from which to remove the event
             * @param {String} eventName The type of event
             * @param {Function} fn The handler function to remove
             */
            removeListener : function(element, eventName, fn, scope){
                return removeListener(element, eventName, fn, scope);
            },

            /**
             * Removes all event handers from an element.  Typically you will use {@link Ext.Element#removeAllListeners}
             * directly on an Element in favor of calling this version.
             * @param {String/HTMLElement} el The id or html element from which to remove the event
             */
            removeAll : function(element){
                return removeAll(element);
            },

            /**
             * Fires when the document is ready (before onload and before images are loaded). Can be
             * accessed shorthanded as Ext.onReady().
             * @param {Function} fn The method the event invokes
             * @param {Object} scope (optional) An object that becomes the scope of the handler
             * @param {boolean} options (optional) An object containing standard {@link #addListener} options
             */
            onDocumentReady : function(fn, scope, options){
                if(docReadyState){ // if it already fired
                    docReadyEvent.addListener(fn, scope, options);
                    docReadyEvent.fire();
                    docReadyEvent.clearListeners();
                    return;
                }
                if(!docReadyEvent){
                    initDocReady();
                }
                options = options || {};
                if(!options.delay){
                    options.delay = 1;
                }
                docReadyEvent.addListener(fn, scope, options);
            },

            // private
            doResizeEvent: function(){
                var h = D.getViewHeight(),
                    w = D.getViewWidth();

                //whacky problem in IE where the resize event will fire even though the w/h are the same.
                if(curHeight != h || curWidth != w){
                    resizeEvent.fire(curWidth = w, curHeight = h);
                }
            },

            /**
             * Fires when the window is resized and provides resize event buffering (50 milliseconds), passes new viewport width and height to handlers.
             * @param {Function} fn        The method the event invokes
             * @param {Object}   scope    An object that becomes the scope of the handler
             * @param {boolean}  options
             */
            onWindowResize : function(fn, scope, options){
                if(!resizeEvent){
                    resizeEvent = new Ext.util.Event();
                    resizeTask = new Ext.util.DelayedTask(this.doResizeEvent);
                    E.on(window, "resize", this.fireWindowResize, this);
                }
                resizeEvent.addListener(fn, scope, options);
            },

            // exposed only to allow manual firing
            fireWindowResize : function(){
                if(resizeEvent){
                    if((Ext.isIE||Ext.isAir) && resizeTask){
                        resizeTask.delay(50);
                    }else{
                        resizeEvent.fire(D.getViewWidth(), D.getViewHeight());
                    }
                }
            },

            /**
             * Fires when the user changes the active text size. Handler gets called with 2 params, the old size and the new size.
             * @param {Function} fn        The method the event invokes
             * @param {Object}   scope    An object that becomes the scope of the handler
             * @param {boolean}  options
             */
            onTextResize : function(fn, scope, options){
                if(!textEvent){
                    textEvent = new Ext.util.Event();
                    var textEl = new Ext.Element(document.createElement('div'));
                    textEl.dom.className = 'x-text-resize';
                    textEl.dom.innerHTML = 'X';
                    textEl.appendTo(document.body);
                    textSize = textEl.dom.offsetHeight;
                    setInterval(function(){
                        if(textEl.dom.offsetHeight != textSize){
                            textEvent.fire(textSize, textSize = textEl.dom.offsetHeight);
                        }
                    }, this.textResizeInterval);
                }
                textEvent.addListener(fn, scope, options);
            },

            /**
             * Removes the passed window resize listener.
             * @param {Function} fn        The method the event invokes
             * @param {Object}   scope    The scope of handler
             */
            removeResizeListener : function(fn, scope){
                if(resizeEvent){
                    resizeEvent.removeListener(fn, scope);
                }
            },

            // private
            fireResize : function(){
                if(resizeEvent){
                    resizeEvent.fire(D.getViewWidth(), D.getViewHeight());
                }
            },
            /**
             * Url used for onDocumentReady with using SSL (defaults to Ext.SSL_SECURE_URL)
             */
            ieDeferSrc : false,
            /**
             * The frequency, in milliseconds, to check for text resize events (defaults to 50)
             */
            textResizeInterval : 50
        };
         /**
         * Appends an event handler to an element.  Shorthand for {@link #addListener}.
         * @param {String/HTMLElement} el The html element or id to assign the event handler to
         * @param {String} eventName The type of event to listen for
         * @param {Function} handler The handler function the event invokes
         * @param {Object} scope (optional) The scope in which to execute the handler
         * function (the handler function's "this" context)
         * @param {Object} options (optional) An object containing standard {@link #addListener} options
         * @member Ext.EventManager
         * @method on
         */
        pub.on = pub.addListener;
        /**
         * Removes an event handler from an element.  Shorthand for {@link #removeListener}.
         * @param {String/HTMLElement} el The id or html element from which to remove the event
         * @param {String} eventName The type of event
         * @param {Function} fn The handler function to remove
         * @return {Boolean} True if a listener was actually removed, else false
         * @member Ext.EventManager
         * @method un
         */
        pub.un = pub.removeListener;

        pub.stoppedMouseDownEvent = new Ext.util.Event();
        return pub;
    }();
    /**
      * Fires when the document is ready (before onload and before images are loaded).  Shorthand of {@link Ext.EventManager#onDocumentReady}.
      * @param {Function} fn The method the event invokes
      * @param {Object} scope An object that becomes the scope of the handler
      * @param {boolean} options (optional) An object containing standard {@link #addListener} options
      * @member Ext
      * @method onReady
     */
    Ext.onReady = Ext.EventManager.onDocumentReady;

    // Initialize doc classes
    (function(){
        var initExtCss = function(){
            // find the body element
            var bd = document.body || document.getElementsByTagName('body')[0];
            if(!bd){ return false; }
            var cls = [' ',
                    Ext.isIE ? "ext-ie " + (Ext.isIE6 ? 'ext-ie6' : (Ext.isIE7 ? 'ext-ie7' : 'ext-ie8'))
                    : Ext.isGecko ? "ext-gecko " + (Ext.isGecko2 ? 'ext-gecko2' : 'ext-gecko3')
                    : Ext.isOpera ? "ext-opera"
                    : Ext.isSafari ? "ext-safari"
                    : Ext.isChrome ? "ext-chrome" : ""];

            if(Ext.isMac){
                cls.push("ext-mac");
            }
            if(Ext.isLinux){
                cls.push("ext-linux");
            }

            if(Ext.isStrict || Ext.isBorderBox){ // add to the parent to allow for selectors like ".ext-strict .ext-ie"
                var p = bd.parentNode;
                if(p){
                    p.className += Ext.isStrict ? ' ext-strict' : ' ext-border-box';
                }
            }
            bd.className += cls.join(' ');
            return true;
        }

        if(!initExtCss()){
            Ext.onReady(initExtCss);
        }
    })();

    /**
     * @class Ext.EventObject
     * EventObject encapsulates a DOM event adjusting for browser differences.
     * Example:
     * <pre><code>
     function handleClick(e){ // e is not a standard event object, it is a Ext.EventObject
        e.preventDefault();
        var target = e.getTarget();
        ...
     }
     var myDiv = Ext.get("myDiv");
     myDiv.on("click", handleClick);
     //or
     Ext.EventManager.on("myDiv", 'click', handleClick);
     Ext.EventManager.addListener("myDiv", 'click', handleClick);
     </code></pre>
     * @singleton
     */
    Ext.EventObject = function(){

        var E = Ext.lib.Event;

        // safari keypress events for special keys return bad keycodes
        var safariKeys = {
            3 : 13, // enter
            63234 : 37, // left
            63235 : 39, // right
            63232 : 38, // up
            63233 : 40, // down
            63276 : 33, // page up
            63277 : 34, // page down
            63272 : 46, // delete
            63273 : 36, // home
            63275 : 35  // end
        };

        // normalize button clicks
        var btnMap = Ext.isIE ? {1:0,4:1,2:2} :
                    (Ext.isWebKit ? {1:0,2:1,3:2} : {0:0,1:1,2:2});

        Ext.EventObjectImpl = function(e){
            if(e){
                this.setEvent(e.browserEvent || e);
            }
        };

        Ext.EventObjectImpl.prototype = {
            /** The encapsulated browser event */
            browserEvent : null,
            /** The button pressed in a mouse event */
            button : -1,
            /** True if the shift key was down during the event */
            shiftKey : false,
            /** True if the control key was down during the event */
            ctrlKey : false,
            /** True if the alt key was down during the event */
            altKey : false,

            /** Key constant @type Number */
            BACKSPACE: 8,
            /** Key constant @type Number */
            TAB: 9,
            /** Key constant @type Number */
            NUM_CENTER: 12,
            /** Key constant @type Number */
            ENTER: 13,
            /** Key constant @type Number */
            RETURN: 13,
            /** Key constant @type Number */
            SHIFT: 16,
            /** Key constant @type Number */
            CTRL: 17,
            CONTROL : 17, // legacy
            /** Key constant @type Number */
            ALT: 18,
            /** Key constant @type Number */
            PAUSE: 19,
            /** Key constant @type Number */
            CAPS_LOCK: 20,
            /** Key constant @type Number */
            ESC: 27,
            /** Key constant @type Number */
            SPACE: 32,
            /** Key constant @type Number */
            PAGE_UP: 33,
            PAGEUP : 33, // legacy
            /** Key constant @type Number */
            PAGE_DOWN: 34,
            PAGEDOWN : 34, // legacy
            /** Key constant @type Number */
            END: 35,
            /** Key constant @type Number */
            HOME: 36,
            /** Key constant @type Number */
            LEFT: 37,
            /** Key constant @type Number */
            UP: 38,
            /** Key constant @type Number */
            RIGHT: 39,
            /** Key constant @type Number */
            DOWN: 40,
            /** Key constant @type Number */
            PRINT_SCREEN: 44,
            /** Key constant @type Number */
            INSERT: 45,
            /** Key constant @type Number */
            DELETE: 46,
            /** Key constant @type Number */
            ZERO: 48,
            /** Key constant @type Number */
            ONE: 49,
            /** Key constant @type Number */
            TWO: 50,
            /** Key constant @type Number */
            THREE: 51,
            /** Key constant @type Number */
            FOUR: 52,
            /** Key constant @type Number */
            FIVE: 53,
            /** Key constant @type Number */
            SIX: 54,
            /** Key constant @type Number */
            SEVEN: 55,
            /** Key constant @type Number */
            EIGHT: 56,
            /** Key constant @type Number */
            NINE: 57,
            /** Key constant @type Number */
            A: 65,
            /** Key constant @type Number */
            B: 66,
            /** Key constant @type Number */
            C: 67,
            /** Key constant @type Number */
            D: 68,
            /** Key constant @type Number */
            E: 69,
            /** Key constant @type Number */
            F: 70,
            /** Key constant @type Number */
            G: 71,
            /** Key constant @type Number */
            H: 72,
            /** Key constant @type Number */
            I: 73,
            /** Key constant @type Number */
            J: 74,
            /** Key constant @type Number */
            K: 75,
            /** Key constant @type Number */
            L: 76,
            /** Key constant @type Number */
            M: 77,
            /** Key constant @type Number */
            N: 78,
            /** Key constant @type Number */
            O: 79,
            /** Key constant @type Number */
            P: 80,
            /** Key constant @type Number */
            Q: 81,
            /** Key constant @type Number */
            R: 82,
            /** Key constant @type Number */
            S: 83,
            /** Key constant @type Number */
            T: 84,
            /** Key constant @type Number */
            U: 85,
            /** Key constant @type Number */
            V: 86,
            /** Key constant @type Number */
            W: 87,
            /** Key constant @type Number */
            X: 88,
            /** Key constant @type Number */
            Y: 89,
            /** Key constant @type Number */
            Z: 90,
            /** Key constant @type Number */
            CONTEXT_MENU: 93,
            /** Key constant @type Number */
            NUM_ZERO: 96,
            /** Key constant @type Number */
            NUM_ONE: 97,
            /** Key constant @type Number */
            NUM_TWO: 98,
            /** Key constant @type Number */
            NUM_THREE: 99,
            /** Key constant @type Number */
            NUM_FOUR: 100,
            /** Key constant @type Number */
            NUM_FIVE: 101,
            /** Key constant @type Number */
            NUM_SIX: 102,
            /** Key constant @type Number */
            NUM_SEVEN: 103,
            /** Key constant @type Number */
            NUM_EIGHT: 104,
            /** Key constant @type Number */
            NUM_NINE: 105,
            /** Key constant @type Number */
            NUM_MULTIPLY: 106,
            /** Key constant @type Number */
            NUM_PLUS: 107,
            /** Key constant @type Number */
            NUM_MINUS: 109,
            /** Key constant @type Number */
            NUM_PERIOD: 110,
            /** Key constant @type Number */
            NUM_DIVISION: 111,
            /** Key constant @type Number */
            F1: 112,
            /** Key constant @type Number */
            F2: 113,
            /** Key constant @type Number */
            F3: 114,
            /** Key constant @type Number */
            F4: 115,
            /** Key constant @type Number */
            F5: 116,
            /** Key constant @type Number */
            F6: 117,
            /** Key constant @type Number */
            F7: 118,
            /** Key constant @type Number */
            F8: 119,
            /** Key constant @type Number */
            F9: 120,
            /** Key constant @type Number */
            F10: 121,
            /** Key constant @type Number */
            F11: 122,
            /** Key constant @type Number */
            F12: 123,

               /** @private */
            setEvent : function(e){
                if(e == this || (e && e.browserEvent)){ // already wrapped
                    return e;
                }
                this.browserEvent = e;
                if(e){
                    // normalize buttons
                    this.button = e.button ? btnMap[e.button] : (e.which ? e.which-1 : -1);
                    if(e.type == 'click' && this.button == -1){
                        this.button = 0;
                    }
                    this.type = e.type;
                    this.shiftKey = e.shiftKey;
                    // mac metaKey behaves like ctrlKey
                    this.ctrlKey = e.ctrlKey || e.metaKey;
                    this.altKey = e.altKey;
                    // in getKey these will be normalized for the mac
                    this.keyCode = e.keyCode;
                    this.charCode = e.charCode;
                    // cache the target for the delayed and or buffered events
                    this.target = E.getTarget(e);
                    // same for XY
                    this.xy = E.getXY(e);
                }else{
                    this.button = -1;
                    this.shiftKey = false;
                    this.ctrlKey = false;
                    this.altKey = false;
                    this.keyCode = 0;
                    this.charCode = 0;
                    this.target = null;
                    this.xy = [0, 0];
                }
                return this;
            },

            /**
             * Stop the event (preventDefault and stopPropagation)
             */
            stopEvent : function(){
                if(this.browserEvent){
                    if(this.browserEvent.type == 'mousedown'){
                        Ext.EventManager.stoppedMouseDownEvent.fire(this);
                    }
                    E.stopEvent(this.browserEvent);
                }
            },

            /**
             * Prevents the browsers default handling of the event.
             */
            preventDefault : function(){
                if(this.browserEvent){
                    E.preventDefault(this.browserEvent);
                }
            },

            /** @private */
            isNavKeyPress : function(){
                var k = this.keyCode;
                k = Ext.isSafari ? (safariKeys[k] || k) : k;
                return (k >= 33 && k <= 40) || k == this.RETURN || k == this.TAB || k == this.ESC;
            },

            isSpecialKey : function(){
                var k = this.keyCode;
                k = Ext.isSafari ? (safariKeys[k] || k) : k;
                return (this.type == 'keypress' && this.ctrlKey) ||
    		this.isNavKeyPress() ||
            (k == this.BACKSPACE) || // Backspace
    		(k >= 16 && k <= 20) || // Shift, Ctrl, Alt, Pause, Caps Lock
    		(k >= 44 && k <= 45);   // Print Screen, Insert
            },

            /**
             * Cancels bubbling of the event.
             */
            stopPropagation : function(){
                if(this.browserEvent){
                    if(this.browserEvent.type == 'mousedown'){
                        Ext.EventManager.stoppedMouseDownEvent.fire(this);
                    }
                    E.stopPropagation(this.browserEvent);
                }
            },

            /**
             * Gets the character code for the event.
             * @return {Number}
             */
            getCharCode : function(){
                return this.charCode || this.keyCode;
            },

            /**
             * Returns a normalized keyCode for the event.
             * @return {Number} The key code
             */
            getKey : function(){
                var k = this.keyCode || this.charCode;
                return Ext.isSafari ? (safariKeys[k] || k) : k;
            },

            /**
             * Gets the x coordinate of the event.
             * @return {Number}
             */
            getPageX : function(){
                return this.xy[0];
            },

            /**
             * Gets the y coordinate of the event.
             * @return {Number}
             */
            getPageY : function(){
                return this.xy[1];
            },

            /**
             * Gets the time of the event.
             * @return {Number}
             */
            getTime : function(){
                if(this.browserEvent){
                    return E.getTime(this.browserEvent);
                }
                return null;
            },

            /**
             * Gets the page coordinates of the event.
             * @return {Array} The xy values like [x, y]
             */
            getXY : function(){
                return this.xy;
            },

            /**
             * Gets the target for the event.
             * @param {String} selector (optional) A simple selector to filter the target or look for an ancestor of the target
             * @param {Number/Mixed} maxDepth (optional) The max depth to
                    search as a number or element (defaults to 10 || document.body)
             * @param {Boolean} returnEl (optional) True to return a Ext.Element object instead of DOM node
             * @return {HTMLelement}
             */
            getTarget : function(selector, maxDepth, returnEl){
                return selector ? Ext.fly(this.target).findParent(selector, maxDepth, returnEl) : (returnEl ? Ext.get(this.target) : this.target);
            },

            /**
             * Gets the related target.
             * @return {HTMLElement}
             */
            getRelatedTarget : function(){
                if(this.browserEvent){
                    return E.getRelatedTarget(this.browserEvent);
                }
                return null;
            },

            /**
             * Normalizes mouse wheel delta across browsers
             * @return {Number} The delta
             */
            getWheelDelta : function(){
                var e = this.browserEvent;
                var delta = 0;
                if(e.wheelDelta){ /* IE/Opera. */
                    delta = e.wheelDelta/120;
                }else if(e.detail){ /* Mozilla case. */
                    delta = -e.detail/3;
                }
                return delta;
            },

            /**
             * Returns true if the control, meta, shift or alt key was pressed during this event.
             * @return {Boolean}
             */
            hasModifier : function(){
                return ((this.ctrlKey || this.altKey) || this.shiftKey) ? true : false;
            },

            /**
             * Returns true if the target of this event is a child of el.  Unless the allowEl parameter is set, it will return false if if the target is el.
             * Example usage:<pre><code>
    // Handle click on any child of an element
    Ext.getBody().on('click', function(e){
        if(e.within('some-el')){
            alert('Clicked on a child of some-el!');
        }
    });

    // Handle click directly on an element, ignoring clicks on child nodes
    Ext.getBody().on('click', function(e,t){
        if((t.id == 'some-el') && !e.within(t, true)){
            alert('Clicked directly on some-el!');
        }
    });
    </code></pre>
             * @param {Mixed} el The id, DOM element or Ext.Element to check
             * @param {Boolean} related (optional) true to test if the related target is within el instead of the target
             * @param {Boolean} allowEl {optional} true to also check if the passed element is the target or related target
             * @return {Boolean}
             */
            within : function(el, related, allowEl){
                var t = this[related ? "getRelatedTarget" : "getTarget"]();
                return t && ((allowEl ? (t === Ext.getDom(el)) : false) || Ext.fly(el).contains(t));
            },

            getPoint : function(){
                return new Ext.lib.Point(this.xy[0], this.xy[1]);
            }
        };

        return new Ext.EventObjectImpl();
    }();

Ext - Copyright © 2006-2007 Ext JS, LLC
All rights reserved.