/*!
* Ext JS Library 3.2.0
* Copyright(c) 2006-2010 Ext JS, Inc.
* licensing@extjs.com
* http://www.extjs.com/license
*/
/**
* @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,
DETECT_NATIVE = Ext.isGecko || Ext.isWebKit || Ext.isSafari,
E = Ext.lib.Event,
D = Ext.lib.Dom,
DOC = document,
WINDOW = window,
DOMCONTENTLOADED = "DOMContentLoaded",
COMPLETE = 'complete',
propRe = /^(?:scope|delay|buffer|single|stopEvent|preventDefault|stopPropagation|normalized|args|delegate)$/,
/*
* This cache is used to hold special js objects, the document and window, that don't have an id. We need to keep
* a reference to them so we can look them up at a later point.
*/
specialElCache = [];
function getId(el){
var id = false,
i = 0,
len = specialElCache.length,
id = false,
skip = false,
o;
if(el){
if(el.getElementById || el.navigator){
// look up the id
for(; i < len; ++i){
o = specialElCache[i];
if(o.el === el){
id = o.id;
break;
}
}
if(!id){
// for browsers that support it, ensure that give the el the same id
id = Ext.id(el);
specialElCache.push({
id: id,
el: el
});
skip = true;
}
}else{
id = Ext.id(el);
}
if(!Ext.elCache[id]){
Ext.Element.addToCache(new Ext.Element(el), id);
if(skip){
Ext.elCache[id].skipGC = true;
}
}
}
return id;
};
/// There is some jquery work around stuff here that isn't needed in Ext Core.
function addListener(el, ename, fn, task, wrap, scope){
el = Ext.getDom(el);
var id = getId(el),
es = Ext.elCache[id].events,
wfn;
wfn = E.on(el, ename, wrap);
es[ename] = es[ename] || [];
/* 0 = Original Function,
1 = Event Manager Wrapped Function,
2 = Scope,
3 = Adapter Wrapped Function,
4 = Buffered Task
*/
es[ename].push([fn, wrap, scope, wfn, task]);
// this is a workaround for jQuery and should somehow be removed from Ext Core in the future
// without breaking ExtJS.
// workaround for jQuery
if(el.addEventListener && ename == "mousewheel"){
var args = ["DOMMouseScroll", wrap, false];
el.addEventListener.apply(el, args);
Ext.EventManager.addListener(WINDOW, 'unload', function(){
el.removeEventListener.apply(el, args);
});
}
// fix stopped mousedowns on the document
if(el == DOC && ename == "mousedown"){
Ext.EventManager.stoppedMouseDownEvent.addListener(wrap);
}
};
function doScrollChk(){
/* Notes:
'doScroll' will NOT work in a IFRAME/FRAMESET.
The method succeeds but, a DOM query done immediately after -- FAILS.
*/
if(window != top){
return false;
}
try{
DOC.documentElement.doScroll('left');
}catch(e){
return false;
}
fireDocReady();
return true;
}
/**
* @return {Boolean} True if the document is in a 'complete' state (or was determined to
* be true by other means). If false, the state is evaluated again until canceled.
*/
function checkReadyState(e){
if(Ext.isIE && doScrollChk()){
return true;
}
if(DOC.readyState == COMPLETE){
fireDocReady();
return true;
}
docReadyState || (docReadyProcId = setTimeout(arguments.callee, 2));
return false;
}
var styles;
function checkStyleSheets(e){
styles || (styles = Ext.query('style, link[rel=stylesheet]'));
if(styles.length == DOC.styleSheets.length){
fireDocReady();
return true;
}
docReadyState || (docReadyProcId = setTimeout(arguments.callee, 2));
return false;
}
function OperaDOMContentLoaded(e){
DOC.removeEventListener(DOMCONTENTLOADED, arguments.callee, false);
checkStyleSheets();
}
function fireDocReady(e){
if(!docReadyState){
docReadyState = true; //only attempt listener removal once
if(docReadyProcId){
clearTimeout(docReadyProcId);
}
if(DETECT_NATIVE) {
DOC.removeEventListener(DOMCONTENTLOADED, fireDocReady, false);
}
if(Ext.isIE && checkReadyState.bindIE){ //was this was actually set ??
DOC.detachEvent('onreadystatechange', checkReadyState);
}
E.un(WINDOW, "load", arguments.callee);
}
if(docReadyEvent && !Ext.isReady){
Ext.isReady = true;
docReadyEvent.fire();
docReadyEvent.listeners = [];
}
};
function initDocReady(){
docReadyEvent || (docReadyEvent = new Ext.util.Event());
if (DETECT_NATIVE) {
DOC.addEventListener(DOMCONTENTLOADED, fireDocReady, false);
}
/*
* Handle additional (exceptional) detection strategies here
*/
if (Ext.isIE){
//Use readystatechange as a backup AND primary detection mechanism for a FRAME/IFRAME
//See if page is already loaded
if(!checkReadyState()){
checkReadyState.bindIE = true;
DOC.attachEvent('onreadystatechange', checkReadyState);
}
}else if(Ext.isOpera ){
/* Notes:
Opera needs special treatment needed here because CSS rules are NOT QUITE
available after DOMContentLoaded is raised.
*/
//See if page is already loaded and all styleSheets are in place
(DOC.readyState == COMPLETE && checkStyleSheets()) ||
DOC.addEventListener(DOMCONTENTLOADED, OperaDOMContentLoaded, false);
}else if (Ext.isWebKit){
//Fallback for older Webkits without DOMCONTENTLOADED support
checkReadyState();
}
// 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, task){
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, fn){
return function(e){
var task = new Ext.util.DelayedTask(h);
if(!fn.tasks) {
fn.tasks = [];
}
fn.tasks.push(task);
task.delay(o.delay || 10, h, null, [new Ext.EventObjectImpl(e)]);
};
};
function listen(element, ename, opt, fn, scope){
var o = !Ext.isObject(opt) ? {} : opt,
el = Ext.getDom(element), task;
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, fn);
}
if(o.single){
h = createSingle(h, el, ename, fn, scope);
}
if(o.buffer){
task = new Ext.util.DelayedTask(h);
h = createBuffered(h, o, task);
}
addListener(el, ename, fn, task, 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 name of the event to listen for.
* @param {Function} handler The handler function the event invokes. This function is passed
* the following parameters:this reference) in which the handler function is executed. Defaults to the Element.
* @param {Object} options (optional) An object containing handler configuration properties.
* This may contain any of the following properties:this reference) in which the handler function is executed. Defaults to the Element.See {@link Ext.Element#addListener} for examples of how to use these options.
*/ 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 listener. * @param {String} eventName The name of the event. * @param {Function} fn The handler function to remove. This must be a reference to the function passed into the {@link #addListener} call. * @param {Object} scope If a scope (this reference) was specified when the listener was added,
* then this must refer to the same object.
*/
removeListener : function(el, eventName, fn, scope){
el = Ext.getDom(el);
var id = getId(el),
f = el && (Ext.elCache[id].events)[eventName] || [],
wrap, i, l, k, len, fnc;
for (i = 0, len = f.length; i < len; i++) {
/* 0 = Original Function,
1 = Event Manager Wrapped Function,
2 = Scope,
3 = Adapter Wrapped Function,
4 = Buffered Task
*/
if (Ext.isArray(fnc = f[i]) && fnc[0] == fn && (!scope || fnc[2] == scope)) {
if(fnc[4]) {
fnc[4].cancel();
}
k = fn.tasks && fn.tasks.length;
if(k) {
while(k--) {
fn.tasks[k].cancel();
}
delete fn.tasks;
}
wrap = fnc[1];
E.un(el, eventName, E.extAdapter ? fnc[3] : wrap);
// jQuery workaround that should be removed from Ext Core
if(wrap && el.addEventListener && eventName == "mousewheel"){
el.removeEventListener("DOMMouseScroll", wrap, false);
}
// fix stopped mousedowns on the document
if(wrap && el == DOC && eventName == "mousedown"){
Ext.EventManager.stoppedMouseDownEvent.removeListener(wrap);
}
f.splice(i, 1);
if (f.length === 0) {
delete Ext.elCache[id].events[eventName];
}
for (k in Ext.elCache[id].events) {
return false;
}
Ext.elCache[id].events = {};
return false;
}
}
},
/**
* 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 all event handlers.
*/
removeAll : function(el){
el = Ext.getDom(el);
var id = getId(el),
ec = Ext.elCache[id] || {},
es = ec.events || {},
f, i, len, ename, fn, k, wrap;
for(ename in es){
if(es.hasOwnProperty(ename)){
f = es[ename];
/* 0 = Original Function,
1 = Event Manager Wrapped Function,
2 = Scope,
3 = Adapter Wrapped Function,
4 = Buffered Task
*/
for (i = 0, len = f.length; i < len; i++) {
fn = f[i];
if(fn[4]) {
fn[4].cancel();
}
if(fn[0].tasks && (k = fn[0].tasks.length)) {
while(k--) {
fn[0].tasks[k].cancel();
}
delete fn.tasks;
}
wrap = fn[1];
E.un(el, ename, E.extAdapter ? fn[3] : wrap);
// jQuery workaround that should be removed from Ext Core
if(el.addEventListener && wrap && ename == "mousewheel"){
el.removeEventListener("DOMMouseScroll", wrap, false);
}
// fix stopped mousedowns on the document
if(wrap && el == DOC && ename == "mousedown"){
Ext.EventManager.stoppedMouseDownEvent.removeListener(wrap);
}
}
}
}
if (Ext.elCache[id]) {
Ext.elCache[id].events = {};
}
},
getListeners : function(el, eventName) {
el = Ext.getDom(el);
var id = getId(el),
ec = Ext.elCache[id] || {},
es = ec.events || {},
results = [];
if (es && es[eventName]) {
return es[eventName];
} else {
return null;
}
},
purgeElement : function(el, recurse, eventName) {
el = Ext.getDom(el);
var id = getId(el),
ec = Ext.elCache[id] || {},
es = ec.events || {},
i, f, len;
if (eventName) {
if (es && es.hasOwnProperty(eventName)) {
f = es[eventName];
for (i = 0, len = f.length; i < len; i++) {
Ext.EventManager.removeListener(el, eventName, f[i][0]);
}
}
} else {
Ext.EventManager.removeAll(el);
}
if (recurse && el && el.childNodes) {
for (i = 0, len = el.childNodes.length; i < len; i++) {
Ext.EventManager.purgeElement(el.childNodes[i], recurse, eventName);
}
}
},
_unload : function() {
var el;
for (el in Ext.elCache) {
Ext.EventManager.removeAll(el);
}
delete Ext.elCache;
delete Ext.Element._flyweights;
// Abort any outstanding Ajax requests
var c,
conn,
tid,
ajax = Ext.lib.Ajax;
(Ext.isObject(ajax.conn)) ? conn = ajax.conn : conn = {};
for (tid in conn) {
c = conn[tid];
if (c) {
ajax.abort({conn: c, tId: tid});
}
}
},
/**
* Adds a listener to be notified 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) The scope (this reference) in which the handler function executes. Defaults to the browser window.
* @param {boolean} options (optional) Options object as passed to {@link Ext.Element#addListener}. It is recommended that the options
* {single: true} be used so that the handler is removed on first invocation.
*/
onDocumentReady : function(fn, scope, options){
if(Ext.isReady){ // if it already fired or document.body is present
docReadyEvent || (docReadyEvent = new Ext.util.Event());
docReadyEvent.addListener(fn, scope, options);
docReadyEvent.fire();
docReadyEvent.listeners = [];
}else{
if(!docReadyEvent){
initDocReady();
}
options = options || {};
options.delay = options.delay || 1;
docReadyEvent.addListener(fn, scope, options);
}
},
/**
* Forces a document ready state transition for the framework. Used when Ext is loaded
* into a DOM structure AFTER initial page load (Google API or other dynamic load scenario.
* Any pending 'onDocumentReady' handlers will be fired (if not already handled).
*/
fireDocReady : fireDocReady
};
/**
* 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 name of the event to listen for.
* @param {Function} handler The handler function the event invokes.
* @param {Object} scope (optional) (this reference) in which the handler function executes. Defaults to the Element.
* @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 listener.
* @param {String} eventName The name of the event.
* @param {Function} fn The handler function to remove. This must be a reference to the function passed into the {@link #on} call.
* @param {Object} scope If a scope (this reference) was specified when the listener was added,
* then this must refer to the same object.
* @member Ext.EventManager
* @method un
*/
pub.un = pub.removeListener;
pub.stoppedMouseDownEvent = new Ext.util.Event();
return pub;
}();
/**
* Adds a listener to be notified 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 (optional) The scope (this reference) in which the handler function executes. Defaults to the browser window.
* @param {boolean} options (optional) Options object as passed to {@link Ext.Element#addListener}. It is recommended that the options
* {single: true} be used so that the handler is removed on first invocation.
* @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.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
* 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.
* For example:
*
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);
// 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!');
}
});