/*
 * Ext Core Library 3.0
 * http://extjs.com/
 * Copyright(c) 2006-2009, Ext JS, LLC.
 * 
 * The MIT License
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * 
 */

/**
 * @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,    	
    	E = Ext.lib.Event,
    	D = Ext.lib.Dom,
    	DOC = document,
    	WINDOW = window,
    	IEDEFERED = "ie-deferred-loader",
    	DOMCONTENTLOADED = "DOMContentLoaded",
    	elHash = {},
    	propRe = /^(?:scope|delay|buffer|single|stopEvent|preventDefault|stopPropagation|normalized|args|delegate)$/;

    /// There is some jquery work around stuff here that isn't needed in Ext Core.
    function addListener(el, ename, fn, wrap, scope){	    
        var id = Ext.id(el),
        	es = elHash[id] = elHash[id] || {};     	
       
        (es[ename] = es[ename] || []).push([fn, wrap, scope]);
        E.on(el, ename, wrap);

        // this is a workaround for jQuery and should somehow be removed from Ext Core in the future
        // without breaking ExtJS.
        if(ename == "mousewheel" && el.addEventListener){ // workaround for jQuery
        	var args = ["DOMMouseScroll", wrap, false];
        	el.addEventListener.apply(el, args);
            E.on(window, 'unload', function(){
	            el.removeEventListener.apply(el, args);                
            });
        }
        if(ename == "mousedown" && el == document){ // fix stopped mousedowns on the document
            Ext.EventManager.stoppedMouseDownEvent.addListener(wrap);
        }
    };
    
    function fireDocReady(){
        if(!docReadyState){            
            Ext.isReady = docReadyState = true;
            if(docReadyProcId){
                clearInterval(docReadyProcId);
            }
            if(Ext.isGecko || Ext.isOpera) {
                DOC.removeEventListener(DOMCONTENTLOADED, fireDocReady, false);
            }
            if(Ext.isIE){
                var defer = DOC.getElementById(IEDEFERED);
                if(defer){
                    defer.onreadystatechange = null;
                    defer.parentNode.removeChild(defer);
                }
            }
            if(docReadyEvent){
                docReadyEvent.fire();
                docReadyEvent.clearListeners();
            }
        }
    };

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

    function createTargeted(h, o){
        return function(){
	        var args = Ext.toArray(arguments);
            if(o.target == Ext.EventObject.setEvent(args[0]).target){
                h.apply(this, args);
            }
        };
    };    
    
    function createBuffered(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            
            task.delay(o.buffer, h, null, [new Ext.EventObjectImpl(e)]);
        };
    };

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

    function createDelayed(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);
        };
    };

    function listen(element, ename, opt, fn, scope){
        var o = !Ext.isObject(opt) ? {} : opt,
        	el = Ext.getDom(element);
        	
        fn = fn || o.fn; 
        scope = scope || o.scope;
        
        if(!el){
            throw "Error listening for \"" + ename + '\". Element "' + element + '" doesn\'t exist.';
        }
        function h(e){
            // prevent errors while unload occurring
            if(!Ext){// !window[xname]){  ==> can't we do this? 
                return;
            }
            e = Ext.EventObject.setEvent(e);
            var t;
            if (o.delegate) {
                if(!(t = e.getTarget(o.delegate, el))){
                    return;
                }
            } else {
                t = e.target;
            }            
            if (o.stopEvent) {
                e.stopEvent();
            }
            if (o.preventDefault) {
               e.preventDefault();
            }
            if (o.stopPropagation) {
                e.stopPropagation();
            }
            if (o.normalized) {
                e = e.browserEvent;
            }
            
            fn.call(scope || el, e, t, o);
        };
        if(o.target){
            h = createTargeted(h, 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 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>
	     * <li>target {Element} : Only call the handler if the event was fired on the target Element, <i>not</i>
	     * if the event was bubbled up from a child node.</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(Ext.isObject(eventName)){                
	            var o = eventName, e, val;
                for(e in o){
	                val = o[e];
                    if(!propRe.test(e)){                            		         
	                    if(Ext.isFunction(val)){
	                        // shared options
	                        listen(element, e, o, val, o.scope);
	                    }else{
	                        // individual options
	                        listen(element, e, val);
	                    }
                    }
                }
            } else {
            	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){            
            var el = Ext.getDom(element),
                id = Ext.id(el),
        	    wrap;      
	        
	        Ext.each((elHash[id] || {})[eventName], function (v,i,a) {
			    if (Ext.isArray(v) && v[0] == fn && (!scope || v[2] == scope)) {		        			        
			        E.un(el, eventName, wrap = v[1]);
			        a.splice(i,1);
			        return false;			        
		        }
	        });	

            // jQuery workaround that should be removed from Ext Core
	        if(eventName == "mousewheel" && el.addEventListener && wrap){
	            el.removeEventListener("DOMMouseScroll", wrap, false);
	        }
            	        
	        if(eventName == "mousedown" && el == DOC && wrap){ // fix stopped mousedowns on the document
	            Ext.EventManager.stoppedMouseDownEvent.removeListener(wrap);
	        }
        },
        
        /**
         * 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(el){
	        var id = Ext.id(el = Ext.getDom(el)), 
				es = elHash[id], 				
				ename;
	       
	        for(ename in es){
	            if(es.hasOwnProperty(ename)){	                    
	                Ext.each(es[ename], function(v) {
	                    E.un(el, ename, v.wrap);                    
	                });
	            }            
	        }
	        elHash[id] = null;       
        },

        /**
         * 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();               
            } else {
                if(!docReadyEvent) initDocReady();
                options = options || {};
	            options.delay = options.delay || 1;	            
	            docReadyEvent.addListener(fn, scope, options);
            }
        },
        
        elHash : elHash   
    };
     /**
     * 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.isWebKit ? "ext-webkit" : ""];

        if(Ext.isSafari){
            cls.push("ext-safari " + (Ext.isSafari2 ? 'ext-safari2' : (Ext.isSafari3 ? 'ext-safari3' : 'ext-safari4')));
        }else if(Ext.isChrome){
            cls.push("ext-chrome");
        }

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

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


/**
 * @class Ext.EventObject
 * Just as {@link Ext.Element} wraps around a native DOM node, Ext.EventObject 
 * wraps the browser's native event-object normalizing cross-browser differences,
 * such as which mouse button is clicked, keys pressed, mechanisms to stop
 * event-propagation along with a method to prevent default actions from taking place.
 * <p>For example:</p>
 * <pre><code>
function handleClick(e, t){ // e is not a standard event object, it is a Ext.EventObject
    e.preventDefault();
    var target = e.getTarget(); // same as t (the target HTMLElement)
    ...
}
var myDiv = {@link Ext#get Ext.get}("myDiv");  // get reference to an {@link Ext.Element}
myDiv.on(         // 'on' is shorthand for addListener
    "click",      // perform an action on click of myDiv
    handleClick   // reference to the action handler
);  
// other methods to do the same:
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
    	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
    	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 = {
           /** @private */
        setEvent : function(e){
	        var me = this;
            if(e == me || (e && e.browserEvent)){ // already wrapped
                return e;
            }
            me.browserEvent = e;
            if(e){
                // normalize buttons
                me.button = e.button ? btnMap[e.button] : (e.which ? e.which - 1 : -1);
                if(e.type == 'click' && me.button == -1){
                    me.button = 0;
                }
                me.type = e.type;
                me.shiftKey = e.shiftKey;
                // mac metaKey behaves like ctrlKey
                me.ctrlKey = e.ctrlKey || e.metaKey || false;
                me.altKey = e.altKey;
                // in getKey these will be normalized for the mac
                me.keyCode = e.keyCode;
                me.charCode = e.charCode;
                // cache the target for the delayed and or buffered events
                me.target = E.getTarget(e);
                // same for XY
                me.xy = E.getXY(e);
            }else{
                me.button = -1;
                me.shiftKey = false;
                me.ctrlKey = false;
                me.altKey = false;
                me.keyCode = 0;
                me.charCode = 0;
                me.target = null;
                me.xy = [0, 0];
            }
            return me;
        },

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

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

        /**
         * Cancels bubbling of the event.
         */
        stopPropagation : function(){
	        var me = this;
            if(me.browserEvent){
                if(me.browserEvent.type == 'mousedown'){
                    Ext.EventManager.stoppedMouseDownEvent.fire(me);
                }
                E.stopPropagation(me.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(){
            return this.normalizeKey(this.keyCode || this.charCode)
        },
		
		// private
		normalizeKey: function(k){
			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(){
            return this.browserEvent ? E.getRelatedTarget(this.browserEvent) : 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 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){
            if(el){
			    var t = this[related ? "getRelatedTarget" : "getTarget"]();
			    return t && ((allowEl ? (t == Ext.getDom(el)) : false) || Ext.fly(el).contains(t));
            }
            return false;
		}
	 };

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