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9 <pre class="prettyprint lang-js">/*!
10 * Ext JS Library 3.2.0
11 * Copyright(c) 2006-2010 Ext JS, Inc.
13 * http://www.extjs.com/license
15 <div id="cls-Ext.EventManager"></div>/**
16 * @class Ext.EventManager
17 * Registers event handlers that want to receive a normalized EventObject instead of the standard browser event and provides
18 * several useful events directly.
19 * See {@link Ext.EventObject} for more details on normalized event objects.
23 Ext.EventManager = function(){
26 docReadyState = false,
27 DETECT_NATIVE = Ext.isGecko || Ext.isWebKit || Ext.isSafari,
32 DOMCONTENTLOADED = "DOMContentLoaded",
33 COMPLETE = 'complete',
34 propRe = /^(?:scope|delay|buffer|single|stopEvent|preventDefault|stopPropagation|normalized|args|delegate)$/,
36 * This cache is used to hold special js objects, the document and window, that don't have an id. We need to keep
37 * a reference to them so we can look them up at a later point.
44 len = specialElCache.length,
49 if(el.getElementById || el.navigator){
52 o = specialElCache[i];
59 // for browsers that support it, ensure that give the el the same id
71 Ext.Element.addToCache(new Ext.Element(el), id);
73 Ext.elCache[id].skipGC = true;
80 /// There is some jquery work around stuff here that isn't needed in Ext Core.
81 function addListener(el, ename, fn, task, wrap, scope){
84 es = Ext.elCache[id].events,
87 wfn = E.on(el, ename, wrap);
88 es[ename] = es[ename] || [];
90 /* 0 = Original Function,
91 1 = Event Manager Wrapped Function,
93 3 = Adapter Wrapped Function,
96 es[ename].push([fn, wrap, scope, wfn, task]);
98 // this is a workaround for jQuery and should somehow be removed from Ext Core in the future
99 // without breaking ExtJS.
101 // workaround for jQuery
102 if(el.addEventListener && ename == "mousewheel"){
103 var args = ["DOMMouseScroll", wrap, false];
104 el.addEventListener.apply(el, args);
105 Ext.EventManager.addListener(WINDOW, 'unload', function(){
106 el.removeEventListener.apply(el, args);
110 // fix stopped mousedowns on the document
111 if(el == DOC && ename == "mousedown"){
112 Ext.EventManager.stoppedMouseDownEvent.addListener(wrap);
116 function doScrollChk(){
118 'doScroll' will NOT work in a IFRAME/FRAMESET.
119 The method succeeds but, a DOM query done immediately after -- FAILS.
126 DOC.documentElement.doScroll('left');
134 <div id="method-Ext.EventManager-function"></div>/**
135 * @return {Boolean} True if the document is in a 'complete' state (or was determined to
136 * be true by other means). If false, the state is evaluated again until canceled.
138 function checkReadyState(e){
140 if(Ext.isIE && doScrollChk()){
143 if(DOC.readyState == COMPLETE){
147 docReadyState || (docReadyProcId = setTimeout(arguments.callee, 2));
152 function checkStyleSheets(e){
153 styles || (styles = Ext.query('style, link[rel=stylesheet]'));
154 if(styles.length == DOC.styleSheets.length){
158 docReadyState || (docReadyProcId = setTimeout(arguments.callee, 2));
162 function OperaDOMContentLoaded(e){
163 DOC.removeEventListener(DOMCONTENTLOADED, arguments.callee, false);
167 function fireDocReady(e){
169 docReadyState = true; //only attempt listener removal once
172 clearTimeout(docReadyProcId);
175 DOC.removeEventListener(DOMCONTENTLOADED, fireDocReady, false);
177 if(Ext.isIE && checkReadyState.bindIE){ //was this was actually set ??
178 DOC.detachEvent('onreadystatechange', checkReadyState);
180 E.un(WINDOW, "load", arguments.callee);
182 if(docReadyEvent && !Ext.isReady){
184 docReadyEvent.fire();
185 docReadyEvent.listeners = [];
190 function initDocReady(){
191 docReadyEvent || (docReadyEvent = new Ext.util.Event());
193 DOC.addEventListener(DOMCONTENTLOADED, fireDocReady, false);
196 * Handle additional (exceptional) detection strategies here
199 //Use readystatechange as a backup AND primary detection mechanism for a FRAME/IFRAME
200 //See if page is already loaded
201 if(!checkReadyState()){
202 checkReadyState.bindIE = true;
203 DOC.attachEvent('onreadystatechange', checkReadyState);
206 }else if(Ext.isOpera ){
208 Opera needs special treatment needed here because CSS rules are NOT QUITE
209 available after DOMContentLoaded is raised.
212 //See if page is already loaded and all styleSheets are in place
213 (DOC.readyState == COMPLETE && checkStyleSheets()) ||
214 DOC.addEventListener(DOMCONTENTLOADED, OperaDOMContentLoaded, false);
216 }else if (Ext.isWebKit){
217 //Fallback for older Webkits without DOMCONTENTLOADED support
220 // no matter what, make sure it fires on load
221 E.on(WINDOW, "load", fireDocReady);
224 function createTargeted(h, o){
226 var args = Ext.toArray(arguments);
227 if(o.target == Ext.EventObject.setEvent(args[0]).target){
233 function createBuffered(h, o, task){
235 // create new event object impl so new events don't wipe out properties
236 task.delay(o.buffer, h, null, [new Ext.EventObjectImpl(e)]);
240 function createSingle(h, el, ename, fn, scope){
242 Ext.EventManager.removeListener(el, ename, fn, scope);
247 function createDelayed(h, o, fn){
249 var task = new Ext.util.DelayedTask(h);
254 task.delay(o.delay || 10, h, null, [new Ext.EventObjectImpl(e)]);
258 function listen(element, ename, opt, fn, scope){
259 var o = !Ext.isObject(opt) ? {} : opt,
260 el = Ext.getDom(element), task;
263 scope = scope || o.scope;
266 throw "Error listening for \"" + ename + '\". Element "' + element + '" doesn\'t exist.';
269 // prevent errors while unload occurring
270 if(!Ext){// !window[xname]){ ==> can't we do this?
273 e = Ext.EventObject.setEvent(e);
276 if(!(t = e.getTarget(o.delegate, el))){
285 if (o.preventDefault) {
288 if (o.stopPropagation) {
295 fn.call(scope || el, e, t, o);
298 h = createTargeted(h, o);
301 h = createDelayed(h, o, fn);
304 h = createSingle(h, el, ename, fn, scope);
307 task = new Ext.util.DelayedTask(h);
308 h = createBuffered(h, o, task);
311 addListener(el, ename, fn, task, h, scope);
316 <div id="method-Ext.EventManager-addListener"></div>/**
317 * Appends an event handler to an element. The shorthand version {@link #on} is equivalent. Typically you will
318 * use {@link Ext.Element#addListener} directly on an Element in favor of calling this version.
319 * @param {String/HTMLElement} el The html element or id to assign the event handler to.
320 * @param {String} eventName The name of the event to listen for.
321 * @param {Function} handler The handler function the event invokes. This function is passed
322 * the following parameters:<ul>
323 * <li>evt : EventObject<div class="sub-desc">The {@link Ext.EventObject EventObject} describing the event.</div></li>
324 * <li>t : Element<div class="sub-desc">The {@link Ext.Element Element} which was the target of the event.
325 * Note that this may be filtered by using the <tt>delegate</tt> option.</div></li>
326 * <li>o : Object<div class="sub-desc">The options object from the addListener call.</div></li>
328 * @param {Object} scope (optional) The scope (<b><code>this</code></b> reference) in which the handler function is executed. <b>Defaults to the Element</b>.
329 * @param {Object} options (optional) An object containing handler configuration properties.
330 * This may contain any of the following properties:<ul>
331 * <li>scope : Object<div class="sub-desc">The scope (<b><code>this</code></b> reference) in which the handler function is executed. <b>Defaults to the Element</b>.</div></li>
332 * <li>delegate : String<div class="sub-desc">A simple selector to filter the target or look for a descendant of the target</div></li>
333 * <li>stopEvent : Boolean<div class="sub-desc">True to stop the event. That is stop propagation, and prevent the default action.</div></li>
334 * <li>preventDefault : Boolean<div class="sub-desc">True to prevent the default action</div></li>
335 * <li>stopPropagation : Boolean<div class="sub-desc">True to prevent event propagation</div></li>
336 * <li>normalized : Boolean<div class="sub-desc">False to pass a browser event to the handler function instead of an Ext.EventObject</div></li>
337 * <li>delay : Number<div class="sub-desc">The number of milliseconds to delay the invocation of the handler after te event fires.</div></li>
338 * <li>single : Boolean<div class="sub-desc">True to add a handler to handle just the next firing of the event, and then remove itself.</div></li>
339 * <li>buffer : Number<div class="sub-desc">Causes the handler to be scheduled to run in an {@link Ext.util.DelayedTask} delayed
340 * by the specified number of milliseconds. If the event fires again within that time, the original
341 * handler is <em>not</em> invoked, but the new handler is scheduled in its place.</div></li>
342 * <li>target : Element<div class="sub-desc">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.</div></li>
344 * <p>See {@link Ext.Element#addListener} for examples of how to use these options.</p>
346 addListener : function(element, eventName, fn, scope, options){
347 if(Ext.isObject(eventName)){
348 var o = eventName, e, val;
352 if(Ext.isFunction(val)){
354 listen(element, e, o, val, o.scope);
356 // individual options
357 listen(element, e, val);
362 listen(element, eventName, options, fn, scope);
366 <div id="method-Ext.EventManager-removeListener"></div>/**
367 * Removes an event handler from an element. The shorthand version {@link #un} is equivalent. Typically
368 * you will use {@link Ext.Element#removeListener} directly on an Element in favor of calling this version.
369 * @param {String/HTMLElement} el The id or html element from which to remove the listener.
370 * @param {String} eventName The name of the event.
371 * @param {Function} fn The handler function to remove. <b>This must be a reference to the function passed into the {@link #addListener} call.</b>
372 * @param {Object} scope If a scope (<b><code>this</code></b> reference) was specified when the listener was added,
373 * then this must refer to the same object.
375 removeListener : function(el, eventName, fn, scope){
378 f = el && (Ext.elCache[id].events)[eventName] || [],
379 wrap, i, l, k, len, fnc;
381 for (i = 0, len = f.length; i < len; i++) {
383 /* 0 = Original Function,
384 1 = Event Manager Wrapped Function,
386 3 = Adapter Wrapped Function,
389 if (Ext.isArray(fnc = f[i]) && fnc[0] == fn && (!scope || fnc[2] == scope)) {
393 k = fn.tasks && fn.tasks.length;
396 fn.tasks[k].cancel();
401 E.un(el, eventName, E.extAdapter ? fnc[3] : wrap);
403 // jQuery workaround that should be removed from Ext Core
404 if(wrap && el.addEventListener && eventName == "mousewheel"){
405 el.removeEventListener("DOMMouseScroll", wrap, false);
408 // fix stopped mousedowns on the document
409 if(wrap && el == DOC && eventName == "mousedown"){
410 Ext.EventManager.stoppedMouseDownEvent.removeListener(wrap);
414 if (f.length === 0) {
415 delete Ext.elCache[id].events[eventName];
417 for (k in Ext.elCache[id].events) {
420 Ext.elCache[id].events = {};
426 <div id="method-Ext.EventManager-removeAll"></div>/**
427 * Removes all event handers from an element. Typically you will use {@link Ext.Element#removeAllListeners}
428 * directly on an Element in favor of calling this version.
429 * @param {String/HTMLElement} el The id or html element from which to remove all event handlers.
431 removeAll : function(el){
434 ec = Ext.elCache[id] || {},
435 es = ec.events || {},
436 f, i, len, ename, fn, k, wrap;
439 if(es.hasOwnProperty(ename)){
441 /* 0 = Original Function,
442 1 = Event Manager Wrapped Function,
444 3 = Adapter Wrapped Function,
447 for (i = 0, len = f.length; i < len; i++) {
452 if(fn[0].tasks && (k = fn[0].tasks.length)) {
454 fn[0].tasks[k].cancel();
459 E.un(el, ename, E.extAdapter ? fn[3] : wrap);
461 // jQuery workaround that should be removed from Ext Core
462 if(el.addEventListener && wrap && ename == "mousewheel"){
463 el.removeEventListener("DOMMouseScroll", wrap, false);
466 // fix stopped mousedowns on the document
467 if(wrap && el == DOC && ename == "mousedown"){
468 Ext.EventManager.stoppedMouseDownEvent.removeListener(wrap);
473 if (Ext.elCache[id]) {
474 Ext.elCache[id].events = {};
478 getListeners : function(el, eventName) {
481 ec = Ext.elCache[id] || {},
482 es = ec.events || {},
484 if (es && es[eventName]) {
485 return es[eventName];
491 purgeElement : function(el, recurse, eventName) {
494 ec = Ext.elCache[id] || {},
495 es = ec.events || {},
498 if (es && es.hasOwnProperty(eventName)) {
500 for (i = 0, len = f.length; i < len; i++) {
501 Ext.EventManager.removeListener(el, eventName, f[i][0]);
505 Ext.EventManager.removeAll(el);
507 if (recurse && el && el.childNodes) {
508 for (i = 0, len = el.childNodes.length; i < len; i++) {
509 Ext.EventManager.purgeElement(el.childNodes[i], recurse, eventName);
514 _unload : function() {
516 for (el in Ext.elCache) {
517 Ext.EventManager.removeAll(el);
520 delete Ext.Element._flyweights;
522 // Abort any outstanding Ajax requests
527 (Ext.isObject(ajax.conn)) ? conn = ajax.conn : conn = {};
531 ajax.abort({conn: c, tId: tid});
535 <div id="method-Ext.EventManager-onDocumentReady"></div>/**
536 * Adds a listener to be notified when the document is ready (before onload and before images are loaded). Can be
537 * accessed shorthanded as Ext.onReady().
538 * @param {Function} fn The method the event invokes.
539 * @param {Object} scope (optional) The scope (<code>this</code> reference) in which the handler function executes. Defaults to the browser window.
540 * @param {boolean} options (optional) Options object as passed to {@link Ext.Element#addListener}. It is recommended that the options
541 * <code>{single: true}</code> be used so that the handler is removed on first invocation.
543 onDocumentReady : function(fn, scope, options){
544 if(Ext.isReady){ // if it already fired or document.body is present
545 docReadyEvent || (docReadyEvent = new Ext.util.Event());
546 docReadyEvent.addListener(fn, scope, options);
547 docReadyEvent.fire();
548 docReadyEvent.listeners = [];
553 options = options || {};
554 options.delay = options.delay || 1;
555 docReadyEvent.addListener(fn, scope, options);
559 <div id="prop-Ext.EventManager-fireDocReady"></div>/**
560 * Forces a document ready state transition for the framework. Used when Ext is loaded
561 * into a DOM structure AFTER initial page load (Google API or other dynamic load scenario.
562 * Any pending 'onDocumentReady' handlers will be fired (if not already handled).
564 fireDocReady : fireDocReady
566 <div id="method-Ext.EventManager-on"></div>/**
567 * Appends an event handler to an element. Shorthand for {@link #addListener}.
568 * @param {String/HTMLElement} el The html element or id to assign the event handler to
569 * @param {String} eventName The name of the event to listen for.
570 * @param {Function} handler The handler function the event invokes.
571 * @param {Object} scope (optional) (<code>this</code> reference) in which the handler function executes. <b>Defaults to the Element</b>.
572 * @param {Object} options (optional) An object containing standard {@link #addListener} options
573 * @member Ext.EventManager
576 pub.on = pub.addListener;
577 <div id="method-Ext.EventManager-un"></div>/**
578 * Removes an event handler from an element. Shorthand for {@link #removeListener}.
579 * @param {String/HTMLElement} el The id or html element from which to remove the listener.
580 * @param {String} eventName The name of the event.
581 * @param {Function} fn The handler function to remove. <b>This must be a reference to the function passed into the {@link #on} call.</b>
582 * @param {Object} scope If a scope (<b><code>this</code></b> reference) was specified when the listener was added,
583 * then this must refer to the same object.
584 * @member Ext.EventManager
587 pub.un = pub.removeListener;
589 pub.stoppedMouseDownEvent = new Ext.util.Event();
592 <div id="method-Ext-onReady"></div>/**
593 * Adds a listener to be notified when the document is ready (before onload and before images are loaded). Shorthand of {@link Ext.EventManager#onDocumentReady}.
594 * @param {Function} fn The method the event invokes.
595 * @param {Object} scope (optional) The scope (<code>this</code> reference) in which the handler function executes. Defaults to the browser window.
596 * @param {boolean} options (optional) Options object as passed to {@link Ext.Element#addListener}. It is recommended that the options
597 * <code>{single: true}</code> be used so that the handler is removed on first invocation.
601 Ext.onReady = Ext.EventManager.onDocumentReady;
604 //Initialize doc classes
607 var initExtCss = function(){
608 // find the body element
609 var bd = document.body || document.getElementsByTagName('body')[0];
610 if(!bd){ return false; }
612 Ext.isIE ? "ext-ie " + (Ext.isIE6 ? 'ext-ie6' : (Ext.isIE7 ? 'ext-ie7' : 'ext-ie8'))
613 : Ext.isGecko ? "ext-gecko " + (Ext.isGecko2 ? 'ext-gecko2' : 'ext-gecko3')
614 : Ext.isOpera ? "ext-opera"
615 : Ext.isWebKit ? "ext-webkit" : ""];
618 cls.push("ext-safari " + (Ext.isSafari2 ? 'ext-safari2' : (Ext.isSafari3 ? 'ext-safari3' : 'ext-safari4')));
619 }else if(Ext.isChrome){
620 cls.push("ext-chrome");
627 cls.push("ext-linux");
630 if(Ext.isStrict || Ext.isBorderBox){ // add to the parent to allow for selectors like ".ext-strict .ext-ie"
631 var p = bd.parentNode;
633 p.className += Ext.isStrict ? ' ext-strict' : ' ext-border-box';
636 bd.className += cls.join(' ');
641 Ext.onReady(initExtCss);
646 <div id="cls-Ext.EventObject"></div>/**
647 * @class Ext.EventObject
648 * Just as {@link Ext.Element} wraps around a native DOM node, Ext.EventObject
649 * wraps the browser's native event-object normalizing cross-browser differences,
650 * such as which mouse button is clicked, keys pressed, mechanisms to stop
651 * event-propagation along with a method to prevent default actions from taking place.
652 * <p>For example:</p>
654 function handleClick(e, t){ // e is not a standard event object, it is a Ext.EventObject
656 var target = e.getTarget(); // same as t (the target HTMLElement)
659 var myDiv = {@link Ext#get Ext.get}("myDiv"); // get reference to an {@link Ext.Element}
660 myDiv.on( // 'on' is shorthand for addListener
661 "click", // perform an action on click of myDiv
662 handleClick // reference to the action handler
664 // other methods to do the same:
665 Ext.EventManager.on("myDiv", 'click', handleClick);
666 Ext.EventManager.addListener("myDiv", 'click', handleClick);
670 Ext.EventObject = function(){
671 var E = Ext.lib.Event,
672 // safari keypress events for special keys return bad keycodes
679 63276 : 33, // page up
680 63277 : 34, // page down
681 63272 : 46, // delete
685 // normalize button clicks
686 btnMap = Ext.isIE ? {1:0,4:1,2:2} :
687 (Ext.isWebKit ? {1:0,2:1,3:2} : {0:0,1:1,2:2});
689 Ext.EventObjectImpl = function(e){
691 this.setEvent(e.browserEvent || e);
695 Ext.EventObjectImpl.prototype = {
697 setEvent : function(e){
699 if(e == me || (e && e.browserEvent)){ // already wrapped
705 me.button = e.button ? btnMap[e.button] : (e.which ? e.which - 1 : -1);
706 if(e.type == 'click' && me.button == -1){
710 me.shiftKey = e.shiftKey;
711 // mac metaKey behaves like ctrlKey
712 me.ctrlKey = e.ctrlKey || e.metaKey || false;
713 me.altKey = e.altKey;
714 // in getKey these will be normalized for the mac
715 me.keyCode = e.keyCode;
716 me.charCode = e.charCode;
717 // cache the target for the delayed and or buffered events
718 me.target = E.getTarget(e);
734 <div id="method-Ext.EventObject-stopEvent"></div>/**
735 * Stop the event (preventDefault and stopPropagation)
737 stopEvent : function(){
740 if(me.browserEvent.type == 'mousedown'){
741 Ext.EventManager.stoppedMouseDownEvent.fire(me);
743 E.stopEvent(me.browserEvent);
747 <div id="method-Ext.EventObject-preventDefault"></div>/**
748 * Prevents the browsers default handling of the event.
750 preventDefault : function(){
751 if(this.browserEvent){
752 E.preventDefault(this.browserEvent);
756 <div id="method-Ext.EventObject-stopPropagation"></div>/**
757 * Cancels bubbling of the event.
759 stopPropagation : function(){
762 if(me.browserEvent.type == 'mousedown'){
763 Ext.EventManager.stoppedMouseDownEvent.fire(me);
765 E.stopPropagation(me.browserEvent);
769 <div id="method-Ext.EventObject-getCharCode"></div>/**
770 * Gets the character code for the event.
773 getCharCode : function(){
774 return this.charCode || this.keyCode;
777 <div id="method-Ext.EventObject-getKey"></div>/**
778 * Returns a normalized keyCode for the event.
779 * @return {Number} The key code
782 return this.normalizeKey(this.keyCode || this.charCode)
786 normalizeKey: function(k){
787 return Ext.isSafari ? (safariKeys[k] || k) : k;
790 <div id="method-Ext.EventObject-getPageX"></div>/**
791 * Gets the x coordinate of the event.
794 getPageX : function(){
798 <div id="method-Ext.EventObject-getPageY"></div>/**
799 * Gets the y coordinate of the event.
802 getPageY : function(){
806 <div id="method-Ext.EventObject-getXY"></div>/**
807 * Gets the page coordinates of the event.
808 * @return {Array} The xy values like [x, y]
814 <div id="method-Ext.EventObject-getTarget"></div>/**
815 * Gets the target for the event.
816 * @param {String} selector (optional) A simple selector to filter the target or look for an ancestor of the target
817 * @param {Number/Mixed} maxDepth (optional) The max depth to
818 search as a number or element (defaults to 10 || document.body)
819 * @param {Boolean} returnEl (optional) True to return a Ext.Element object instead of DOM node
820 * @return {HTMLelement}
822 getTarget : function(selector, maxDepth, returnEl){
823 return selector ? Ext.fly(this.target).findParent(selector, maxDepth, returnEl) : (returnEl ? Ext.get(this.target) : this.target);
826 <div id="method-Ext.EventObject-getRelatedTarget"></div>/**
827 * Gets the related target.
828 * @return {HTMLElement}
830 getRelatedTarget : function(){
831 return this.browserEvent ? E.getRelatedTarget(this.browserEvent) : null;
834 <div id="method-Ext.EventObject-getWheelDelta"></div>/**
835 * Normalizes mouse wheel delta across browsers
836 * @return {Number} The delta
838 getWheelDelta : function(){
839 var e = this.browserEvent;
841 if(e.wheelDelta){ /* IE/Opera. */
842 delta = e.wheelDelta/120;
843 }else if(e.detail){ /* Mozilla case. */
849 <div id="method-Ext.EventObject-within"></div>/**
850 * 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.
851 * Example usage:<pre><code>
852 // Handle click on any child of an element
853 Ext.getBody().on('click', function(e){
854 if(e.within('some-el')){
855 alert('Clicked on a child of some-el!');
859 // Handle click directly on an element, ignoring clicks on child nodes
860 Ext.getBody().on('click', function(e,t){
861 if((t.id == 'some-el') && !e.within(t, true)){
862 alert('Clicked directly on some-el!');
866 * @param {Mixed} el The id, DOM element or Ext.Element to check
867 * @param {Boolean} related (optional) true to test if the related target is within el instead of the target
868 * @param {Boolean} allowEl {optional} true to also check if the passed element is the target or related target
871 within : function(el, related, allowEl){
873 var t = this[related ? "getRelatedTarget" : "getTarget"]();
874 return t && ((allowEl ? (t == Ext.getDom(el)) : false) || Ext.fly(el).contains(t));
880 return new Ext.EventObjectImpl();