3 * Copyright(c) 2006-2010 Ext JS, Inc.
5 * http://www.extjs.com/license
8 window.undefined = window.undefined;
12 * Ext core utilities and functions.
18 * The version of the framework
30 * Copies all the properties of config to obj.
31 * @param {Object} obj The receiver of the properties
32 * @param {Object} config The source of the properties
33 * @param {Object} defaults A different object that will also be applied for default values
34 * @return {Object} returns obj
37 Ext.apply = function(o, c, defaults){
38 // no "this" reference for friendly out of scope calls
40 Ext.apply(o, defaults);
42 if(o && c && typeof c == 'object'){
52 toString = Object.prototype.toString,
53 ua = navigator.userAgent.toLowerCase(),
58 isStrict = DOC.compatMode == "CSS1Compat",
59 isOpera = check(/opera/),
60 isChrome = check(/\bchrome\b/),
61 isWebKit = check(/webkit/),
62 isSafari = !isChrome && check(/safari/),
63 isSafari2 = isSafari && check(/applewebkit\/4/), // unique to Safari 2
64 isSafari3 = isSafari && check(/version\/3/),
65 isSafari4 = isSafari && check(/version\/4/),
66 isIE = !isOpera && check(/msie/),
67 isIE7 = isIE && check(/msie 7/),
68 isIE8 = isIE && check(/msie 8/),
69 isIE6 = isIE && !isIE7 && !isIE8,
70 isGecko = !isWebKit && check(/gecko/),
71 isGecko2 = isGecko && check(/rv:1\.8/),
72 isGecko3 = isGecko && check(/rv:1\.9/),
73 isBorderBox = isIE && !isStrict,
74 isWindows = check(/windows|win32/),
75 isMac = check(/macintosh|mac os x/),
76 isAir = check(/adobeair/),
77 isLinux = check(/linux/),
78 isSecure = /^https/i.test(window.location.protocol);
80 // remove css image flicker
83 DOC.execCommand("BackgroundImageCache", false, true);
89 * URL to a blank file used by Ext when in secure mode for iframe src and onReady src to prevent
90 * the IE insecure content warning (<tt>'about:blank'</tt>, except for IE in secure mode, which is <tt>'javascript:""'</tt>).
93 SSL_SECURE_URL : isSecure && isIE ? 'javascript:""' : 'about:blank',
95 * True if the browser is in strict (standards-compliant) mode, as opposed to quirks mode
100 * True if the page is running over SSL
105 * True when the document is fully initialized and ready for action
111 * True if the {@link Ext.Fx} Class is available
117 * True to automatically uncache orphaned Ext.Elements periodically (defaults to true)
120 enableGarbageCollector : true,
123 * True to automatically purge event listeners during garbageCollection (defaults to false).
126 enableListenerCollection : false,
129 * EXPERIMENTAL - True to cascade listener removal to child elements when an element is removed.
130 * Currently not optimized for performance.
133 enableNestedListenerRemoval : false,
136 * Indicates whether to use native browser parsing for JSON methods.
137 * This option is ignored if the browser does not support native JSON methods.
138 * <b>Note: Native JSON methods will not work with objects that have functions.
139 * Also, property names must be quoted, otherwise the data will not parse.</b> (Defaults to false)
142 USE_NATIVE_JSON : false,
145 * Copies all the properties of config to obj if they don't already exist.
146 * @param {Object} obj The receiver of the properties
147 * @param {Object} config The source of the properties
148 * @return {Object} returns obj
150 applyIf : function(o, c){
153 if(!Ext.isDefined(o[p])){
162 * Generates unique ids. If the element already has an id, it is unchanged
163 * @param {Mixed} el (optional) The element to generate an id for
164 * @param {String} prefix (optional) Id prefix (defaults "ext-gen")
165 * @return {String} The generated Id.
167 id : function(el, prefix){
168 el = Ext.getDom(el, true) || {};
170 el.id = (prefix || "ext-gen") + (++idSeed);
176 * <p>Extends one class to create a subclass and optionally overrides members with the passed literal. This method
177 * also adds the function "override()" to the subclass that can be used to override members of the class.</p>
178 * For example, to create a subclass of Ext GridPanel:
180 MyGridPanel = Ext.extend(Ext.grid.GridPanel, {
181 constructor: function(config) {
183 // Create configuration for this Grid.
184 var store = new Ext.data.Store({...});
185 var colModel = new Ext.grid.ColumnModel({...});
187 // Create a new config object containing our computed properties
188 // *plus* whatever was in the config parameter.
194 MyGridPanel.superclass.constructor.call(this, config);
196 // Your postprocessing here
199 yourMethod: function() {
205 * <p>This function also supports a 3-argument call in which the subclass's constructor is
206 * passed as an argument. In this form, the parameters are as follows:</p>
207 * <div class="mdetail-params"><ul>
208 * <li><code>subclass</code> : Function <div class="sub-desc">The subclass constructor.</div></li>
209 * <li><code>superclass</code> : Function <div class="sub-desc">The constructor of class being extended</div></li>
210 * <li><code>overrides</code> : Object <div class="sub-desc">A literal with members which are copied into the subclass's
211 * prototype, and are therefore shared among all instances of the new class.</div></li>
214 * @param {Function} superclass The constructor of class being extended.
215 * @param {Object} overrides <p>A literal with members which are copied into the subclass's
216 * prototype, and are therefore shared between all instances of the new class.</p>
217 * <p>This may contain a special member named <tt><b>constructor</b></tt>. This is used
218 * to define the constructor of the new class, and is returned. If this property is
219 * <i>not</i> specified, a constructor is generated and returned which just calls the
220 * superclass's constructor passing on its parameters.</p>
221 * <p><b>It is essential that you call the superclass constructor in any provided constructor. See example code.</b></p>
222 * @return {Function} The subclass constructor from the <code>overrides</code> parameter, or a generated one if not provided.
226 var io = function(o){
231 var oc = Object.prototype.constructor;
233 return function(sb, sp, overrides){
234 if(typeof sp == 'object'){
237 sb = overrides.constructor != oc ? overrides.constructor : function(){sp.apply(this, arguments);};
239 var F = function(){},
244 sbp = sb.prototype = new F();
247 if(spp.constructor == oc){
250 sb.override = function(o){
253 sbp.superclass = sbp.supr = (function(){
257 Ext.override(sb, overrides);
258 sb.extend = function(o){return Ext.extend(sb, o);};
264 * Adds a list of functions to the prototype of an existing class, overwriting any existing methods with the same name.
266 Ext.override(MyClass, {
267 newMethod1: function(){
270 newMethod2: function(foo){
275 * @param {Object} origclass The class to override
276 * @param {Object} overrides The list of functions to add to origClass. This should be specified as an object literal
277 * containing one or more methods.
280 override : function(origclass, overrides){
282 var p = origclass.prototype;
283 Ext.apply(p, overrides);
284 if(Ext.isIE && overrides.hasOwnProperty('toString')){
285 p.toString = overrides.toString;
291 * Creates namespaces to be used for scoping variables and classes so that they are not global.
292 * Specifying the last node of a namespace implicitly creates all other nodes. Usage:
294 Ext.namespace('Company', 'Company.data');
295 Ext.namespace('Company.data'); // equivalent and preferable to above syntax
296 Company.Widget = function() { ... }
297 Company.data.CustomStore = function(config) { ... }
299 * @param {String} namespace1
300 * @param {String} namespace2
301 * @param {String} etc
302 * @return {Object} The namespace object. (If multiple arguments are passed, this will be the last namespace created)
305 namespace : function(){
307 Ext.each(arguments, function(v) {
309 o = window[d[0]] = window[d[0]] || {};
310 Ext.each(d.slice(1), function(v2){
311 o = o[v2] = o[v2] || {};
318 * Takes an object and converts it to an encoded URL. e.g. Ext.urlEncode({foo: 1, bar: 2}); would return "foo=1&bar=2". Optionally, property values can be arrays, instead of keys and the resulting string that's returned will contain a name/value pair for each array value.
320 * @param {String} pre (optional) A prefix to add to the url encoded string
323 urlEncode : function(o, pre){
326 e = encodeURIComponent;
328 Ext.iterate(o, function(key, item){
329 empty = Ext.isEmpty(item);
330 Ext.each(empty ? key : item, function(val){
331 buf.push('&', e(key), '=', (!Ext.isEmpty(val) && (val != key || !empty)) ? (Ext.isDate(val) ? Ext.encode(val).replace(/"/g, '') : e(val)) : '');
338 return pre + buf.join('');
342 * Takes an encoded URL and and converts it to an object. Example: <pre><code>
343 Ext.urlDecode("foo=1&bar=2"); // returns {foo: "1", bar: "2"}
344 Ext.urlDecode("foo=1&bar=2&bar=3&bar=4", false); // returns {foo: "1", bar: ["2", "3", "4"]}
346 * @param {String} string
347 * @param {Boolean} overwrite (optional) Items of the same name will overwrite previous values instead of creating an an array (Defaults to false).
348 * @return {Object} A literal with members
350 urlDecode : function(string, overwrite){
351 if(Ext.isEmpty(string)){
355 pairs = string.split('&'),
356 d = decodeURIComponent,
359 Ext.each(pairs, function(pair) {
360 pair = pair.split('=');
363 obj[name] = overwrite || !obj[name] ? value :
364 [].concat(obj[name]).concat(value);
370 * Appends content to the query string of a URL, handling logic for whether to place
371 * a question mark or ampersand.
372 * @param {String} url The URL to append to.
373 * @param {String} s The content to append to the URL.
374 * @return (String) The resulting URL
376 urlAppend : function(url, s){
378 return url + (url.indexOf('?') === -1 ? '?' : '&') + s;
384 * Converts any iterable (numeric indices and a length property) into a true array
385 * Don't use this on strings. IE doesn't support "abc"[0] which this implementation depends on.
386 * For strings, use this instead: "abc".match(/./g) => [a,b,c];
387 * @param {Iterable} the iterable object to be turned into a true Array.
388 * @return (Array) array
390 toArray : function(){
392 function(a, i, j, res){
394 for(var x = 0, len = a.length; x < len; x++) {
397 return res.slice(i || 0, j || res.length);
400 return Array.prototype.slice.call(a, i || 0, j || a.length);
404 isIterable : function(v){
405 //check for array or arguments
406 if(Ext.isArray(v) || v.callee){
409 //check for node list type
410 if(/NodeList|HTMLCollection/.test(toString.call(v))){
413 //NodeList has an item and length property
414 //IXMLDOMNodeList has nextNode method, needs to be checked first.
415 return ((typeof v.nextNode != 'undefined' || v.item) && Ext.isNumber(v.length));
419 * Iterates an array calling the supplied function.
420 * @param {Array/NodeList/Mixed} array The array to be iterated. If this
421 * argument is not really an array, the supplied function is called once.
422 * @param {Function} fn The function to be called with each item. If the
423 * supplied function returns false, iteration stops and this method returns
424 * the current <code>index</code>. This function is called with
425 * the following arguments:
426 * <div class="mdetail-params"><ul>
427 * <li><code>item</code> : <i>Mixed</i>
428 * <div class="sub-desc">The item at the current <code>index</code>
429 * in the passed <code>array</code></div></li>
430 * <li><code>index</code> : <i>Number</i>
431 * <div class="sub-desc">The current index within the array</div></li>
432 * <li><code>allItems</code> : <i>Array</i>
433 * <div class="sub-desc">The <code>array</code> passed as the first
434 * argument to <code>Ext.each</code>.</div></li>
436 * @param {Object} scope The scope (<code>this</code> reference) in which the specified function is executed.
437 * Defaults to the <code>item</code> at the current <code>index</code>
438 * within the passed <code>array</code>.
439 * @return See description for the fn parameter.
441 each : function(array, fn, scope){
442 if(Ext.isEmpty(array, true)){
445 if(!Ext.isIterable(array) || Ext.isPrimitive(array)){
448 for(var i = 0, len = array.length; i < len; i++){
449 if(fn.call(scope || array[i], array[i], i, array) === false){
456 * Iterates either the elements in an array, or each of the properties in an object.
457 * <b>Note</b>: If you are only iterating arrays, it is better to call {@link #each}.
458 * @param {Object/Array} object The object or array to be iterated
459 * @param {Function} fn The function to be called for each iteration.
460 * The iteration will stop if the supplied function returns false, or
461 * all array elements / object properties have been covered. The signature
462 * varies depending on the type of object being interated:
463 * <div class="mdetail-params"><ul>
464 * <li>Arrays : <tt>(Object item, Number index, Array allItems)</tt>
465 * <div class="sub-desc">
466 * When iterating an array, the supplied function is called with each item.</div></li>
467 * <li>Objects : <tt>(String key, Object value, Object)</tt>
468 * <div class="sub-desc">
469 * When iterating an object, the supplied function is called with each key-value pair in
470 * the object, and the iterated object</div></li>
472 * @param {Object} scope The scope (<code>this</code> reference) in which the specified function is executed. Defaults to
473 * the <code>object</code> being iterated.
475 iterate : function(obj, fn, scope){
476 if(Ext.isEmpty(obj)){
479 if(Ext.isIterable(obj)){
480 Ext.each(obj, fn, scope);
482 }else if(typeof obj == 'object'){
483 for(var prop in obj){
484 if(obj.hasOwnProperty(prop)){
485 if(fn.call(scope || obj, prop, obj[prop], obj) === false){
494 * Return the dom node for the passed String (id), dom node, or Ext.Element.
495 * Optional 'strict' flag is needed for IE since it can return 'name' and
496 * 'id' elements by using getElementById.
497 * Here are some examples:
499 // gets dom node based on id
500 var elDom = Ext.getDom('elId');
501 // gets dom node based on the dom node
502 var elDom1 = Ext.getDom(elDom);
504 // If we don't know if we are working with an
505 // Ext.Element or a dom node use Ext.getDom
507 var dom = Ext.getDom(el);
508 // do something with the dom node
511 * <b>Note</b>: the dom node to be found actually needs to exist (be rendered, etc)
512 * when this method is called to be successful.
514 * @return HTMLElement
516 getDom : function(el, strict){
523 if (typeof el == 'string') {
524 var e = DOC.getElementById(el);
525 // IE returns elements with the 'name' and 'id' attribute.
526 // we do a strict check to return the element with only the id attribute
527 if (e && isIE && strict) {
528 if (el == e.getAttribute('id')) {
542 * Returns the current document body as an {@link Ext.Element}.
543 * @return Ext.Element The document body
545 getBody : function(){
546 return Ext.get(DOC.body || DOC.documentElement);
550 * Removes a DOM node from the document.
553 * <p>Removes this element from the document, removes all DOM event listeners, and deletes the cache reference.
554 * All DOM event listeners are removed from this element. If {@link Ext#enableNestedListenerRemoval} is
555 * <code>true</code>, then DOM event listeners are also removed from all child nodes. The body node
556 * will be ignored if passed in.</p>
557 * @param {HTMLElement} node The node to remove
559 removeNode : isIE && !isIE8 ? function(){
562 if(n && n.tagName != 'BODY'){
563 (Ext.enableNestedListenerRemoval) ? Ext.EventManager.purgeElement(n, true) : Ext.EventManager.removeAll(n);
564 d = d || DOC.createElement('div');
567 delete Ext.elCache[n.id];
571 if(n && n.parentNode && n.tagName != 'BODY'){
572 (Ext.enableNestedListenerRemoval) ? Ext.EventManager.purgeElement(n, true) : Ext.EventManager.removeAll(n);
573 n.parentNode.removeChild(n);
574 delete Ext.elCache[n.id];
579 * <p>Returns true if the passed value is empty.</p>
580 * <p>The value is deemed to be empty if it is<div class="mdetail-params"><ul>
583 * <li>an empty array</li>
584 * <li>a zero length string (Unless the <tt>allowBlank</tt> parameter is <tt>true</tt>)</li>
586 * @param {Mixed} value The value to test
587 * @param {Boolean} allowBlank (optional) true to allow empty strings (defaults to false)
590 isEmpty : function(v, allowBlank){
591 return v === null || v === undefined || ((Ext.isArray(v) && !v.length)) || (!allowBlank ? v === '' : false);
595 * Returns true if the passed value is a JavaScript array, otherwise false.
596 * @param {Mixed} value The value to test
599 isArray : function(v){
600 return toString.apply(v) === '[object Array]';
604 * Returns true if the passed object is a JavaScript date object, otherwise false.
605 * @param {Object} object The object to test
608 isDate : function(v){
609 return toString.apply(v) === '[object Date]';
613 * Returns true if the passed value is a JavaScript Object, otherwise false.
614 * @param {Mixed} value The value to test
617 isObject : function(v){
618 return !!v && Object.prototype.toString.call(v) === '[object Object]';
622 * Returns true if the passed value is a JavaScript 'primitive', a string, number or boolean.
623 * @param {Mixed} value The value to test
626 isPrimitive : function(v){
627 return Ext.isString(v) || Ext.isNumber(v) || Ext.isBoolean(v);
631 * Returns true if the passed value is a JavaScript Function, otherwise false.
632 * @param {Mixed} value The value to test
635 isFunction : function(v){
636 return toString.apply(v) === '[object Function]';
640 * Returns true if the passed value is a number. Returns false for non-finite numbers.
641 * @param {Mixed} value The value to test
644 isNumber : function(v){
645 return typeof v === 'number' && isFinite(v);
649 * Returns true if the passed value is a string.
650 * @param {Mixed} value The value to test
653 isString : function(v){
654 return typeof v === 'string';
658 * Returns true if the passed value is a boolean.
659 * @param {Mixed} value The value to test
662 isBoolean : function(v){
663 return typeof v === 'boolean';
667 * Returns true if the passed value is an HTMLElement
668 * @param {Mixed} value The value to test
671 isElement : function(v) {
672 return v ? !!v.tagName : false;
676 * Returns true if the passed value is not undefined.
677 * @param {Mixed} value The value to test
680 isDefined : function(v){
681 return typeof v !== 'undefined';
685 * True if the detected browser is Opera.
690 * True if the detected browser uses WebKit.
695 * True if the detected browser is Chrome.
700 * True if the detected browser is Safari.
705 * True if the detected browser is Safari 3.x.
708 isSafari3 : isSafari3,
710 * True if the detected browser is Safari 4.x.
713 isSafari4 : isSafari4,
715 * True if the detected browser is Safari 2.x.
718 isSafari2 : isSafari2,
720 * True if the detected browser is Internet Explorer.
725 * True if the detected browser is Internet Explorer 6.x.
730 * True if the detected browser is Internet Explorer 7.x.
735 * True if the detected browser is Internet Explorer 8.x.
740 * True if the detected browser uses the Gecko layout engine (e.g. Mozilla, Firefox).
745 * True if the detected browser uses a pre-Gecko 1.9 layout engine (e.g. Firefox 2.x).
750 * True if the detected browser uses a Gecko 1.9+ layout engine (e.g. Firefox 3.x).
755 * True if the detected browser is Internet Explorer running in non-strict mode.
758 isBorderBox : isBorderBox,
760 * True if the detected platform is Linux.
765 * True if the detected platform is Windows.
768 isWindows : isWindows,
770 * True if the detected platform is Mac OS.
775 * True if the detected platform is Adobe Air.
782 * Creates namespaces to be used for scoping variables and classes so that they are not global.
783 * Specifying the last node of a namespace implicitly creates all other nodes. Usage:
785 Ext.namespace('Company', 'Company.data');
786 Ext.namespace('Company.data'); // equivalent and preferable to above syntax
787 Company.Widget = function() { ... }
788 Company.data.CustomStore = function(config) { ... }
790 * @param {String} namespace1
791 * @param {String} namespace2
792 * @param {String} etc
793 * @return {Object} The namespace object. (If multiple arguments are passed, this will be the last namespace created)
796 Ext.ns = Ext.namespace;
799 Ext.ns("Ext.util", "Ext.lib", "Ext.data");
805 * These functions are available on every Function object (any JavaScript function).
807 Ext.apply(Function.prototype, {
809 * Creates an interceptor function. The passed function is called before the original one. If it returns false,
810 * the original one is not called. The resulting function returns the results of the original function.
811 * The passed function is called with the parameters of the original function. Example usage:
813 var sayHi = function(name){
814 alert('Hi, ' + name);
817 sayHi('Fred'); // alerts "Hi, Fred"
819 // create a new function that validates input without
820 // directly modifying the original function:
821 var sayHiToFriend = sayHi.createInterceptor(function(name){
822 return name == 'Brian';
825 sayHiToFriend('Fred'); // no alert
826 sayHiToFriend('Brian'); // alerts "Hi, Brian"
828 * @param {Function} fcn The function to call before the original
829 * @param {Object} scope (optional) The scope (<code><b>this</b></code> reference) in which the passed function is executed.
830 * <b>If omitted, defaults to the scope in which the original function is called or the browser window.</b>
831 * @return {Function} The new function
833 createInterceptor : function(fcn, scope){
835 return !Ext.isFunction(fcn) ?
842 return (fcn.apply(scope || me || window, args) !== false) ?
843 method.apply(me || window, args) :
849 * Creates a callback that passes arguments[0], arguments[1], arguments[2], ...
850 * Call directly on any function. Example: <code>myFunction.createCallback(arg1, arg2)</code>
851 * Will create a function that is bound to those 2 args. <b>If a specific scope is required in the
852 * callback, use {@link #createDelegate} instead.</b> The function returned by createCallback always
853 * executes in the window scope.
854 * <p>This method is required when you want to pass arguments to a callback function. If no arguments
855 * are needed, you can simply pass a reference to the function as a callback (e.g., callback: myFn).
856 * However, if you tried to pass a function with arguments (e.g., callback: myFn(arg1, arg2)) the function
857 * would simply execute immediately when the code is parsed. Example usage:
859 var sayHi = function(name){
860 alert('Hi, ' + name);
863 // clicking the button alerts "Hi, Fred"
866 renderTo: Ext.getBody(),
867 handler: sayHi.createCallback('Fred')
870 * @return {Function} The new function
872 createCallback : function(/*args...*/){
873 // make args available, in function below
874 var args = arguments,
877 return method.apply(window, args);
882 * Creates a delegate (callback) that sets the scope to obj.
883 * Call directly on any function. Example: <code>this.myFunction.createDelegate(this, [arg1, arg2])</code>
884 * Will create a function that is automatically scoped to obj so that the <tt>this</tt> variable inside the
885 * callback points to obj. Example usage:
887 var sayHi = function(name){
888 // Note this use of "this.text" here. This function expects to
889 // execute within a scope that contains a text property. In this
890 // example, the "this" variable is pointing to the btn object that
891 // was passed in createDelegate below.
892 alert('Hi, ' + name + '. You clicked the "' + this.text + '" button.');
895 var btn = new Ext.Button({
897 renderTo: Ext.getBody()
900 // This callback will execute in the scope of the
901 // button instance. Clicking the button alerts
902 // "Hi, Fred. You clicked the "Say Hi" button."
903 btn.on('click', sayHi.createDelegate(btn, ['Fred']));
905 * @param {Object} scope (optional) The scope (<code><b>this</b></code> reference) in which the function is executed.
906 * <b>If omitted, defaults to the browser window.</b>
907 * @param {Array} args (optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)
908 * @param {Boolean/Number} appendArgs (optional) if True args are appended to call args instead of overriding,
909 * if a number the args are inserted at the specified position
910 * @return {Function} The new function
912 createDelegate : function(obj, args, appendArgs){
915 var callArgs = args || arguments;
916 if (appendArgs === true){
917 callArgs = Array.prototype.slice.call(arguments, 0);
918 callArgs = callArgs.concat(args);
919 }else if (Ext.isNumber(appendArgs)){
920 callArgs = Array.prototype.slice.call(arguments, 0); // copy arguments first
921 var applyArgs = [appendArgs, 0].concat(args); // create method call params
922 Array.prototype.splice.apply(callArgs, applyArgs); // splice them in
924 return method.apply(obj || window, callArgs);
929 * Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:
931 var sayHi = function(name){
932 alert('Hi, ' + name);
935 // executes immediately:
938 // executes after 2 seconds:
939 sayHi.defer(2000, this, ['Fred']);
941 // this syntax is sometimes useful for deferring
942 // execution of an anonymous function:
947 * @param {Number} millis The number of milliseconds for the setTimeout call (if less than or equal to 0 the function is executed immediately)
948 * @param {Object} scope (optional) The scope (<code><b>this</b></code> reference) in which the function is executed.
949 * <b>If omitted, defaults to the browser window.</b>
950 * @param {Array} args (optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)
951 * @param {Boolean/Number} appendArgs (optional) if True args are appended to call args instead of overriding,
952 * if a number the args are inserted at the specified position
953 * @return {Number} The timeout id that can be used with clearTimeout
955 defer : function(millis, obj, args, appendArgs){
956 var fn = this.createDelegate(obj, args, appendArgs);
958 return setTimeout(fn, millis);
967 * These functions are available on every String object.
969 Ext.applyIf(String, {
971 * Allows you to define a tokenized string and pass an arbitrary number of arguments to replace the tokens. Each
972 * token must be unique, and must increment in the format {0}, {1}, etc. Example usage:
974 var cls = 'my-class', text = 'Some text';
975 var s = String.format('<div class="{0}">{1}</div>', cls, text);
976 // s now contains the string: '<div class="my-class">Some text</div>'
978 * @param {String} string The tokenized string to be formatted
979 * @param {String} value1 The value to replace token {0}
980 * @param {String} value2 Etc...
981 * @return {String} The formatted string
984 format : function(format){
985 var args = Ext.toArray(arguments, 1);
986 return format.replace(/\{(\d+)\}/g, function(m, i){
995 Ext.applyIf(Array.prototype, {
997 * Checks whether or not the specified object exists in the array.
998 * @param {Object} o The object to check for
999 * @param {Number} from (Optional) The index at which to begin the search
1000 * @return {Number} The index of o in the array (or -1 if it is not found)
1002 indexOf : function(o, from){
1003 var len = this.length;
1005 from += (from < 0) ? len : 0;
1006 for (; from < len; ++from){
1007 if(this[from] === o){
1015 * Removes the specified object from the array. If the object is not found nothing happens.
1016 * @param {Object} o The object to remove
1017 * @return {Array} this array
1019 remove : function(o){
1020 var index = this.indexOf(o);
1022 this.splice(index, 1);
1031 Ext.ns("Ext.grid", "Ext.list", "Ext.dd", "Ext.tree", "Ext.form", "Ext.menu",
1032 "Ext.state", "Ext.layout", "Ext.app", "Ext.ux", "Ext.chart", "Ext.direct");
1034 * Namespace alloted for extensions to the framework.
1039 Ext.apply(Ext, function(){
1046 * A reusable empty function
1050 emptyFn : function(){},
1053 * URL to a 1x1 transparent gif image used by Ext to create inline icons with CSS background images.
1054 * In older versions of IE, this defaults to "http://extjs.com/s.gif" and you should change this to a URL on your server.
1055 * For other browsers it uses an inline data URL.
1058 BLANK_IMAGE_URL : Ext.isIE6 || Ext.isIE7 || Ext.isAir ?
1059 'http:/' + '/www.extjs.com/s.gif' :
1060 'data:image/gif;base64,R0lGODlhAQABAID/AMDAwAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==',
1062 extendX : function(supr, fn){
1063 return Ext.extend(supr, fn(supr.prototype));
1067 * Returns the current HTML document object as an {@link Ext.Element}.
1068 * @return Ext.Element The document
1070 getDoc : function(){
1071 return Ext.get(document);
1075 * Utility method for validating that a value is numeric, returning the specified default value if it is not.
1076 * @param {Mixed} value Should be a number, but any type will be handled appropriately
1077 * @param {Number} defaultValue The value to return if the original value is non-numeric
1078 * @return {Number} Value, if numeric, else defaultValue
1080 num : function(v, defaultValue){
1081 v = Number(Ext.isEmpty(v) || Ext.isArray(v) || typeof v == 'boolean' || (typeof v == 'string' && v.trim().length == 0) ? NaN : v);
1082 return isNaN(v) ? defaultValue : v;
1086 * <p>Utility method for returning a default value if the passed value is empty.</p>
1087 * <p>The value is deemed to be empty if it is<div class="mdetail-params"><ul>
1089 * <li>undefined</li>
1090 * <li>an empty array</li>
1091 * <li>a zero length string (Unless the <tt>allowBlank</tt> parameter is <tt>true</tt>)</li>
1093 * @param {Mixed} value The value to test
1094 * @param {Mixed} defaultValue The value to return if the original value is empty
1095 * @param {Boolean} allowBlank (optional) true to allow zero length strings to qualify as non-empty (defaults to false)
1096 * @return {Mixed} value, if non-empty, else defaultValue
1098 value : function(v, defaultValue, allowBlank){
1099 return Ext.isEmpty(v, allowBlank) ? defaultValue : v;
1103 * Escapes the passed string for use in a regular expression
1104 * @param {String} str
1107 escapeRe : function(s) {
1108 return s.replace(/([-.*+?^${}()|[\]\/\\])/g, "\\$1");
1111 sequence : function(o, name, fn, scope){
1112 o[name] = o[name].createSequence(fn, scope);
1116 * Applies event listeners to elements by selectors when the document is ready.
1117 * The event name is specified with an <tt>@</tt> suffix.
1120 // add a listener for click on all anchors in element with id foo
1121 '#foo a@click' : function(e, t){
1125 // add the same listener to multiple selectors (separated by comma BEFORE the @)
1126 '#foo a, #bar span.some-class@mouseover' : function(){
1131 * @param {Object} obj The list of behaviors to apply
1133 addBehaviors : function(o){
1135 Ext.onReady(function(){
1136 Ext.addBehaviors(o);
1139 var cache = {}, // simple cache for applying multiple behaviors to same selector does query multiple times
1144 if ((parts = b.split('@'))[1]) { // for Object prototype breakers
1147 cache[s] = Ext.select(s);
1149 cache[s].on(parts[1], o[b]);
1157 * Utility method for getting the width of the browser scrollbar. This can differ depending on
1158 * operating system settings, such as the theme or font size.
1159 * @param {Boolean} force (optional) true to force a recalculation of the value.
1160 * @return {Number} The width of the scrollbar.
1162 getScrollBarWidth: function(force){
1167 if(force === true || scrollWidth === null){
1168 // Append our div, do our calculation and then remove it
1169 var div = Ext.getBody().createChild('<div class="x-hide-offsets" style="width:100px;height:50px;overflow:hidden;"><div style="height:200px;"></div></div>'),
1170 child = div.child('div', true);
1171 var w1 = child.offsetWidth;
1172 div.setStyle('overflow', (Ext.isWebKit || Ext.isGecko) ? 'auto' : 'scroll');
1173 var w2 = child.offsetWidth;
1175 // Need to add 2 to ensure we leave enough space
1176 scrollWidth = w1 - w2 + 2;
1183 combine : function(){
1184 var as = arguments, l = as.length, r = [];
1185 for(var i = 0; i < l; i++){
1189 }else if(a.length !== undefined && !a.substr){
1190 r = r.concat(Array.prototype.slice.call(a, 0));
1199 * Copies a set of named properties fom the source object to the destination object.
1200 * <p>example:<pre><code>
1201 ImageComponent = Ext.extend(Ext.BoxComponent, {
1202 initComponent: function() {
1203 this.autoEl = { tag: 'img' };
1204 MyComponent.superclass.initComponent.apply(this, arguments);
1205 this.initialBox = Ext.copyTo({}, this.initialConfig, 'x,y,width,height');
1209 * @param {Object} dest The destination object.
1210 * @param {Object} source The source object.
1211 * @param {Array/String} names Either an Array of property names, or a comma-delimited list
1212 * of property names to copy.
1213 * @return {Object} The modified object.
1215 copyTo : function(dest, source, names){
1216 if(typeof names == 'string'){
1217 names = names.split(/[,;\s]/);
1219 Ext.each(names, function(name){
1220 if(source.hasOwnProperty(name)){
1221 dest[name] = source[name];
1228 * Attempts to destroy any objects passed to it by removing all event listeners, removing them from the
1229 * DOM (if applicable) and calling their destroy functions (if available). This method is primarily
1230 * intended for arguments of type {@link Ext.Element} and {@link Ext.Component}, but any subclass of
1231 * {@link Ext.util.Observable} can be passed in. Any number of elements and/or components can be
1232 * passed into this function in a single call as separate arguments.
1233 * @param {Mixed} arg1 An {@link Ext.Element}, {@link Ext.Component}, or an Array of either of these to destroy
1234 * @param {Mixed} arg2 (optional)
1235 * @param {Mixed} etc... (optional)
1237 destroy : function(){
1238 Ext.each(arguments, function(arg){
1240 if(Ext.isArray(arg)){
1241 this.destroy.apply(this, arg);
1242 }else if(typeof arg.destroy == 'function'){
1252 * Attempts to destroy and then remove a set of named properties of the passed object.
1253 * @param {Object} o The object (most likely a Component) who's properties you wish to destroy.
1254 * @param {Mixed} arg1 The name of the property to destroy and remove from the object.
1255 * @param {Mixed} etc... More property names to destroy and remove.
1257 destroyMembers : function(o, arg1, arg2, etc){
1258 for(var i = 1, a = arguments, len = a.length; i < len; i++) {
1259 Ext.destroy(o[a[i]]);
1265 * Creates a copy of the passed Array with falsy values removed.
1266 * @param {Array/NodeList} arr The Array from which to remove falsy values.
1267 * @return {Array} The new, compressed Array.
1269 clean : function(arr){
1271 Ext.each(arr, function(v){
1280 * Creates a copy of the passed Array, filtered to contain only unique values.
1281 * @param {Array} arr The Array to filter
1282 * @return {Array} The new Array containing unique values.
1284 unique : function(arr){
1288 Ext.each(arr, function(v) {
1298 * Recursively flattens into 1-d Array. Injects Arrays inline.
1299 * @param {Array} arr The array to flatten
1300 * @return {Array} The new, flattened array.
1302 flatten : function(arr){
1304 function rFlatten(a) {
1305 Ext.each(a, function(v) {
1314 return rFlatten(arr);
1318 * Returns the minimum value in the Array.
1319 * @param {Array|NodeList} arr The Array from which to select the minimum value.
1320 * @param {Function} comp (optional) a function to perform the comparision which determines minimization.
1321 * If omitted the "<" operator will be used. Note: gt = 1; eq = 0; lt = -1
1322 * @return {Object} The minimum value in the Array.
1324 min : function(arr, comp){
1326 comp = comp || function(a,b){ return a < b ? -1 : 1; };
1327 Ext.each(arr, function(v) {
1328 ret = comp(ret, v) == -1 ? ret : v;
1334 * Returns the maximum value in the Array
1335 * @param {Array|NodeList} arr The Array from which to select the maximum value.
1336 * @param {Function} comp (optional) a function to perform the comparision which determines maximization.
1337 * If omitted the ">" operator will be used. Note: gt = 1; eq = 0; lt = -1
1338 * @return {Object} The maximum value in the Array.
1340 max : function(arr, comp){
1342 comp = comp || function(a,b){ return a > b ? 1 : -1; };
1343 Ext.each(arr, function(v) {
1344 ret = comp(ret, v) == 1 ? ret : v;
1350 * Calculates the mean of the Array
1351 * @param {Array} arr The Array to calculate the mean value of.
1352 * @return {Number} The mean.
1354 mean : function(arr){
1355 return arr.length > 0 ? Ext.sum(arr) / arr.length : undefined;
1359 * Calculates the sum of the Array
1360 * @param {Array} arr The Array to calculate the sum value of.
1361 * @return {Number} The sum.
1363 sum : function(arr){
1365 Ext.each(arr, function(v) {
1372 * Partitions the set into two sets: a true set and a false set.
1377 Ext.partition([true, false, true, true, false]); // [[true, true, true], [false, false]]
1383 return val.className == "class1"
1386 // true are those paragraph elements with a className of "class1",
1387 // false set are those that do not have that className.
1389 * @param {Array|NodeList} arr The array to partition
1390 * @param {Function} truth (optional) a function to determine truth. If this is omitted the element
1391 * itself must be able to be evaluated for its truthfulness.
1392 * @return {Array} [true<Array>,false<Array>]
1394 partition : function(arr, truth){
1396 Ext.each(arr, function(v, i, a) {
1397 ret[ (truth && truth(v, i, a)) || (!truth && v) ? 0 : 1].push(v);
1403 * Invokes a method on each item in an Array.
1406 Ext.invoke(Ext.query("p"), "getAttribute", "id");
1407 // [el1.getAttribute("id"), el2.getAttribute("id"), ..., elN.getAttribute("id")]
1409 * @param {Array|NodeList} arr The Array of items to invoke the method on.
1410 * @param {String} methodName The method name to invoke.
1411 * @param {...*} args Arguments to send into the method invocation.
1412 * @return {Array} The results of invoking the method on each item in the array.
1414 invoke : function(arr, methodName){
1416 args = Array.prototype.slice.call(arguments, 2);
1417 Ext.each(arr, function(v,i) {
1418 if (v && typeof v[methodName] == 'function') {
1419 ret.push(v[methodName].apply(v, args));
1421 ret.push(undefined);
1428 * Plucks the value of a property from each item in the Array
1431 Ext.pluck(Ext.query("p"), "className"); // [el1.className, el2.className, ..., elN.className]
1433 * @param {Array|NodeList} arr The Array of items to pluck the value from.
1434 * @param {String} prop The property name to pluck from each element.
1435 * @return {Array} The value from each item in the Array.
1437 pluck : function(arr, prop){
1439 Ext.each(arr, function(v) {
1440 ret.push( v[prop] );
1446 * <p>Zips N sets together.</p>
1449 Ext.zip([1,2,3],[4,5,6]); // [[1,4],[2,5],[3,6]]
1456 return "$" + a + "" + b + "." + c
1458 ); // ["$+12.43", "$-10.15", "$+22.96"]
1460 * @param {Arrays|NodeLists} arr This argument may be repeated. Array(s) to contribute values.
1461 * @param {Function} zipper (optional) The last item in the argument list. This will drive how the items are zipped together.
1462 * @return {Array} The zipped set.
1465 var parts = Ext.partition(arguments, function( val ){ return typeof val != 'function'; }),
1468 len = Ext.max(Ext.pluck(arrs, "length")),
1471 for (var i = 0; i < len; i++) {
1474 ret[i] = fn.apply(fn, Ext.pluck(arrs, i));
1476 for (var j = 0, aLen = arrs.length; j < aLen; j++){
1477 ret[i].push( arrs[j][i] );
1485 * This is shorthand reference to {@link Ext.ComponentMgr#get}.
1486 * Looks up an existing {@link Ext.Component Component} by {@link Ext.Component#id id}
1487 * @param {String} id The component {@link Ext.Component#id id}
1488 * @return Ext.Component The Component, <tt>undefined</tt> if not found, or <tt>null</tt> if a
1491 getCmp : function(id){
1492 return Ext.ComponentMgr.get(id);
1496 * By default, Ext intelligently decides whether floating elements should be shimmed. If you are using flash,
1497 * you may want to set this to true.
1500 useShims: E.isIE6 || (E.isMac && E.isGecko2),
1502 // inpired by a similar function in mootools library
1504 * Returns the type of object that is passed in. If the object passed in is null or undefined it
1505 * return false otherwise it returns one of the following values:<div class="mdetail-params"><ul>
1506 * <li><b>string</b>: If the object passed is a string</li>
1507 * <li><b>number</b>: If the object passed is a number</li>
1508 * <li><b>boolean</b>: If the object passed is a boolean value</li>
1509 * <li><b>date</b>: If the object passed is a Date object</li>
1510 * <li><b>function</b>: If the object passed is a function reference</li>
1511 * <li><b>object</b>: If the object passed is an object</li>
1512 * <li><b>array</b>: If the object passed is an array</li>
1513 * <li><b>regexp</b>: If the object passed is a regular expression</li>
1514 * <li><b>element</b>: If the object passed is a DOM Element</li>
1515 * <li><b>nodelist</b>: If the object passed is a DOM NodeList</li>
1516 * <li><b>textnode</b>: If the object passed is a DOM text node and contains something other than whitespace</li>
1517 * <li><b>whitespace</b>: If the object passed is a DOM text node and contains only whitespace</li>
1519 * @param {Mixed} object
1523 if(o === undefined || o === null){
1530 if(t == 'object' && o.nodeName) {
1531 switch(o.nodeType) {
1532 case 1: return 'element';
1533 case 3: return (/\S/).test(o.nodeValue) ? 'textnode' : 'whitespace';
1536 if(t == 'object' || t == 'function') {
1537 switch(o.constructor) {
1538 case Array: return 'array';
1539 case RegExp: return 'regexp';
1540 case Date: return 'date';
1542 if(typeof o.length == 'number' && typeof o.item == 'function') {
1549 intercept : function(o, name, fn, scope){
1550 o[name] = o[name].createInterceptor(fn, scope);
1554 callback : function(cb, scope, args, delay){
1555 if(typeof cb == 'function'){
1557 cb.defer(delay, scope, args || []);
1559 cb.apply(scope, args || []);
1568 * These functions are available on every Function object (any JavaScript function).
1570 Ext.apply(Function.prototype, {
1572 * Create a combined function call sequence of the original function + the passed function.
1573 * The resulting function returns the results of the original function.
1574 * The passed fcn is called with the parameters of the original function. Example usage:
1576 var sayHi = function(name){
1577 alert('Hi, ' + name);
1580 sayHi('Fred'); // alerts "Hi, Fred"
1582 var sayGoodbye = sayHi.createSequence(function(name){
1583 alert('Bye, ' + name);
1586 sayGoodbye('Fred'); // both alerts show
1588 * @param {Function} fcn The function to sequence
1589 * @param {Object} scope (optional) The scope (<code><b>this</b></code> reference) in which the passed function is executed.
1590 * <b>If omitted, defaults to the scope in which the original function is called or the browser window.</b>
1591 * @return {Function} The new function
1593 createSequence : function(fcn, scope){
1595 return (typeof fcn != 'function') ?
1598 var retval = method.apply(this || window, arguments);
1599 fcn.apply(scope || this || window, arguments);
1608 * These functions are available as static methods on the JavaScript String object.
1610 Ext.applyIf(String, {
1613 * Escapes the passed string for ' and \
1614 * @param {String} string The string to escape
1615 * @return {String} The escaped string
1618 escape : function(string) {
1619 return string.replace(/('|\\)/g, "\\$1");
1623 * Pads the left side of a string with a specified character. This is especially useful
1624 * for normalizing number and date strings. Example usage:
1626 var s = String.leftPad('123', 5, '0');
1627 // s now contains the string: '00123'
1629 * @param {String} string The original string
1630 * @param {Number} size The total length of the output string
1631 * @param {String} char (optional) The character with which to pad the original string (defaults to empty string " ")
1632 * @return {String} The padded string
1635 leftPad : function (val, size, ch) {
1636 var result = String(val);
1640 while (result.length < size) {
1641 result = ch + result;
1648 * Utility function that allows you to easily switch a string between two alternating values. The passed value
1649 * is compared to the current string, and if they are equal, the other value that was passed in is returned. If
1650 * they are already different, the first value passed in is returned. Note that this method returns the new value
1651 * but does not change the current string.
1653 // alternate sort directions
1654 sort = sort.toggle('ASC', 'DESC');
1656 // instead of conditional logic:
1657 sort = (sort == 'ASC' ? 'DESC' : 'ASC');
1659 * @param {String} value The value to compare to the current string
1660 * @param {String} other The new value to use if the string already equals the first value passed in
1661 * @return {String} The new value
1663 String.prototype.toggle = function(value, other){
1664 return this == value ? other : value;
1668 * Trims whitespace from either end of a string, leaving spaces within the string intact. Example:
1670 var s = ' foo bar ';
1671 alert('-' + s + '-'); //alerts "- foo bar -"
1672 alert('-' + s.trim() + '-'); //alerts "-foo bar-"
1674 * @return {String} The trimmed string
1676 String.prototype.trim = function(){
1677 var re = /^\s+|\s+$/g;
1678 return function(){ return this.replace(re, ""); };
1681 // here to prevent dependency on Date.js
1683 Returns the number of milliseconds between this date and date
1684 @param {Date} date (optional) Defaults to now
1685 @return {Number} The diff in milliseconds
1686 @member Date getElapsed
1688 Date.prototype.getElapsed = function(date) {
1689 return Math.abs((date || new Date()).getTime()-this.getTime());
1696 Ext.applyIf(Number.prototype, {
1698 * Checks whether or not the current number is within a desired range. If the number is already within the
1699 * range it is returned, otherwise the min or max value is returned depending on which side of the range is
1700 * exceeded. Note that this method returns the constrained value but does not change the current number.
1701 * @param {Number} min The minimum number in the range
1702 * @param {Number} max The maximum number in the range
1703 * @return {Number} The constrained value if outside the range, otherwise the current value
1705 constrain : function(min, max){
1706 return Math.min(Math.max(this, min), max);
1710 * @class Ext.util.TaskRunner
1711 * Provides the ability to execute one or more arbitrary tasks in a multithreaded
1712 * manner. Generally, you can use the singleton {@link Ext.TaskMgr} instead, but
1713 * if needed, you can create separate instances of TaskRunner. Any number of
1714 * separate tasks can be started at any time and will run independently of each
1715 * other. Example usage:
1717 // Start a simple clock task that updates a div once per second
1718 var updateClock = function(){
1719 Ext.fly('clock').update(new Date().format('g:i:s A'));
1723 interval: 1000 //1 second
1725 var runner = new Ext.util.TaskRunner();
1728 // equivalent using TaskMgr
1735 * <p>See the {@link #start} method for details about how to configure a task object.</p>
1736 * Also see {@link Ext.util.DelayedTask}.
1739 * @param {Number} interval (optional) The minimum precision in milliseconds supported by this TaskRunner instance
1742 Ext.util.TaskRunner = function(interval){
1743 interval = interval || 10;
1750 stopThread = function(){
1757 startThread = function(){
1760 id = setInterval(runTasks, interval);
1765 removeTask = function(t){
1766 removeQueue.push(t);
1768 t.onStop.apply(t.scope || t);
1773 runTasks = function(){
1774 var rqLen = removeQueue.length,
1775 now = new Date().getTime();
1778 for(var i = 0; i < rqLen; i++){
1779 tasks.remove(removeQueue[i]);
1782 if(tasks.length < 1){
1787 for(var i = 0, t, itime, rt, len = tasks.length; i < len; ++i){
1789 itime = now - t.taskRunTime;
1790 if(t.interval <= itime){
1791 rt = t.run.apply(t.scope || t, t.args || [++t.taskRunCount]);
1792 t.taskRunTime = now;
1793 if(rt === false || t.taskRunCount === t.repeat){
1798 if(t.duration && t.duration <= (now - t.taskStartTime)){
1805 * Starts a new task.
1807 * @param {Object} task <p>A config object that supports the following properties:<ul>
1808 * <li><code>run</code> : Function<div class="sub-desc"><p>The function to execute each time the task is invoked. The
1809 * function will be called at each interval and passed the <code>args</code> argument if specified, and the
1810 * current invocation count if not.</p>
1811 * <p>If a particular scope (<code>this</code> reference) is required, be sure to specify it using the <code>scope</code> argument.</p>
1812 * <p>Return <code>false</code> from this function to terminate the task.</p></div></li>
1813 * <li><code>interval</code> : Number<div class="sub-desc">The frequency in milliseconds with which the task
1814 * should be invoked.</div></li>
1815 * <li><code>args</code> : Array<div class="sub-desc">(optional) An array of arguments to be passed to the function
1816 * specified by <code>run</code>. If not specified, the current invocation count is passed.</div></li>
1817 * <li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<tt>this</tt> reference) in which to execute the
1818 * <code>run</code> function. Defaults to the task config object.</div></li>
1819 * <li><code>duration</code> : Number<div class="sub-desc">(optional) The length of time in milliseconds to invoke
1820 * the task before stopping automatically (defaults to indefinite).</div></li>
1821 * <li><code>repeat</code> : Number<div class="sub-desc">(optional) The number of times to invoke the task before
1822 * stopping automatically (defaults to indefinite).</div></li>
1824 * <p>Before each invocation, Ext injects the property <code>taskRunCount</code> into the task object so
1825 * that calculations based on the repeat count can be performed.</p>
1826 * @return {Object} The task
1828 this.start = function(task){
1830 task.taskStartTime = new Date().getTime();
1831 task.taskRunTime = 0;
1832 task.taskRunCount = 0;
1838 * Stops an existing running task.
1840 * @param {Object} task The task to stop
1841 * @return {Object} The task
1843 this.stop = function(task){
1849 * Stops all tasks that are currently running.
1852 this.stopAll = function(){
1854 for(var i = 0, len = tasks.length; i < len; i++){
1855 if(tasks[i].onStop){
1865 * @class Ext.TaskMgr
1866 * @extends Ext.util.TaskRunner
1867 * A static {@link Ext.util.TaskRunner} instance that can be used to start and stop arbitrary tasks. See
1868 * {@link Ext.util.TaskRunner} for supported methods and task config properties.
1870 // Start a simple clock task that updates a div once per second
1873 Ext.fly('clock').update(new Date().format('g:i:s A'));
1875 interval: 1000 //1 second
1877 Ext.TaskMgr.start(task);
1879 * <p>See the {@link #start} method for details about how to configure a task object.</p>
1882 Ext.TaskMgr = new Ext.util.TaskRunner();(function(){
1885 version = Prototype.Version.split('.'),
1886 mouseEnterSupported = (parseInt(version[0]) >= 2) || (parseInt(version[1]) >= 7) || (parseInt(version[2]) >= 1),
1888 elContains = function(parent, child) {
1889 if(parent && parent.firstChild){
1891 if(child === parent) {
1894 child = child.parentNode;
1895 if(child && (child.nodeType != 1)) {
1902 checkRelatedTarget = function(e) {
1903 return !elContains(e.currentTarget, Ext.lib.Event.getRelatedTarget(e));
1907 getViewWidth : function(full){
1908 return full ? this.getDocumentWidth() : this.getViewportWidth();
1911 getViewHeight : function(full){
1912 return full ? this.getDocumentHeight() : this.getViewportHeight();
1915 getDocumentHeight: function() { // missing from prototype?
1916 var scrollHeight = (document.compatMode != "CSS1Compat") ? document.body.scrollHeight : document.documentElement.scrollHeight;
1917 return Math.max(scrollHeight, this.getViewportHeight());
1920 getDocumentWidth: function() { // missing from prototype?
1921 var scrollWidth = (document.compatMode != "CSS1Compat") ? document.body.scrollWidth : document.documentElement.scrollWidth;
1922 return Math.max(scrollWidth, this.getViewportWidth());
1925 getViewportHeight: function() { // missing from prototype?
1926 var height = self.innerHeight;
1927 var mode = document.compatMode;
1929 if ( (mode || Ext.isIE) && !Ext.isOpera ) {
1930 height = (mode == "CSS1Compat") ?
1931 document.documentElement.clientHeight : // Standards
1932 document.body.clientHeight; // Quirks
1938 getViewportWidth: function() { // missing from prototype?
1939 var width = self.innerWidth; // Safari
1940 var mode = document.compatMode;
1942 if (mode || Ext.isIE) { // IE, Gecko, Opera
1943 width = (mode == "CSS1Compat") ?
1944 document.documentElement.clientWidth : // Standards
1945 document.body.clientWidth; // Quirks
1950 isAncestor : function(p, c){ // missing from prototype?
1957 return p.contains(c);
1958 } else if (p.compareDocumentPosition) {
1959 return !!(p.compareDocumentPosition(c) & 16);
1961 while (c = c.parentNode) {
1962 ret = c == p || ret;
1969 getRegion : function(el){
1970 return Ext.lib.Region.getRegion(el);
1973 getY : function(el){
1974 return this.getXY(el)[1];
1977 getX : function(el){
1978 return this.getXY(el)[0];
1981 getXY : function(el){ // this initially used Position.cumulativeOffset but it is not accurate enough
1982 var p, pe, b, scroll, bd = (document.body || document.documentElement);
1983 el = Ext.getDom(el);
1989 if (el.getBoundingClientRect) {
1990 b = el.getBoundingClientRect();
1991 scroll = fly(document).getScroll();
1992 return [Math.round(b.left + scroll.left), Math.round(b.top + scroll.top)];
1998 var hasAbsolute = fly(el).getStyle("position") == "absolute";
2005 if (!hasAbsolute && fly(p).getStyle("position") == "absolute") {
2012 var bt = parseInt(pe.getStyle("borderTopWidth"), 10) || 0;
2013 var bl = parseInt(pe.getStyle("borderLeftWidth"), 10) || 0;
2020 if (p != el && pe.getStyle('overflow') != 'visible') {
2028 if (Ext.isSafari && hasAbsolute) {
2033 if (Ext.isGecko && !hasAbsolute) {
2035 x += parseInt(dbd.getStyle("borderLeftWidth"), 10) || 0;
2036 y += parseInt(dbd.getStyle("borderTopWidth"), 10) || 0;
2040 while (p && p != bd) {
2041 if (!Ext.isOpera || (p.tagName != 'TR' && fly(p).getStyle("display") != "inline")) {
2050 setXY : function(el, xy){ // this initially used Position.cumulativeOffset but it is not accurate enough
2051 el = Ext.fly(el, '_setXY');
2053 var pts = el.translatePoints(xy);
2054 if(xy[0] !== false){
2055 el.dom.style.left = pts.left + "px";
2057 if(xy[1] !== false){
2058 el.dom.style.top = pts.top + "px";
2062 setX : function(el, x){
2063 this.setXY(el, [x, false]);
2066 setY : function(el, y){
2067 this.setXY(el, [false, y]);
2072 getPageX : function(e){
2073 return Event.pointerX(e.browserEvent || e);
2076 getPageY : function(e){
2077 return Event.pointerY(e.browserEvent || e);
2080 getXY : function(e){
2081 e = e.browserEvent || e;
2082 return [Event.pointerX(e), Event.pointerY(e)];
2085 getTarget : function(e){
2086 return Event.element(e.browserEvent || e);
2089 resolveTextNode: Ext.isGecko ? function(node){
2093 var s = HTMLElement.prototype.toString.call(node);
2094 if(s == '[xpconnect wrapped native prototype]' || s == '[object XULElement]'){
2097 return node.nodeType == 3 ? node.parentNode : node;
2099 return node && node.nodeType == 3 ? node.parentNode : node;
2102 getRelatedTarget: function(ev) { // missing from prototype?
2103 ev = ev.browserEvent || ev;
2104 var t = ev.relatedTarget;
2106 if (ev.type == "mouseout") {
2108 } else if (ev.type == "mouseover") {
2113 return this.resolveTextNode(t);
2116 on : function(el, eventName, fn){
2117 if((eventName == 'mouseenter' || eventName == 'mouseleave') && !mouseEnterSupported){
2118 var item = mouseCache[el.id] || (mouseCache[el.id] = {});
2119 item[eventName] = fn;
2120 fn = fn.createInterceptor(checkRelatedTarget);
2121 eventName = (eventName == 'mouseenter') ? 'mouseover' : 'mouseout';
2123 Event.observe(el, eventName, fn, false);
2126 un : function(el, eventName, fn){
2127 if((eventName == 'mouseenter' || eventName == 'mouseleave') && !mouseEnterSupported){
2128 var item = mouseCache[el.id],
2129 ev = item && item[eventName];
2133 delete item[eventName];
2134 eventName = (eventName == 'mouseenter') ? 'mouseover' : 'mouseout';
2137 Event.stopObserving(el, eventName, fn, false);
2140 purgeElement : function(el){
2144 preventDefault : function(e){ // missing from prototype?
2145 e = e.browserEvent || e;
2146 if(e.preventDefault) {
2149 e.returnValue = false;
2153 stopPropagation : function(e){ // missing from prototype?
2154 e = e.browserEvent || e;
2155 if(e.stopPropagation) {
2156 e.stopPropagation();
2158 e.cancelBubble = true;
2162 stopEvent : function(e){
2163 Event.stop(e.browserEvent || e);
2166 onAvailable : function(id, fn, scope){ // no equiv
2167 var start = new Date(), iid;
2169 if(start.getElapsed() > 10000){
2172 var el = document.getElementById(id);
2175 fn.call(scope||window, el);
2178 iid = setInterval(f, 50);
2182 Ext.lib.Ajax = function(){
2183 var createSuccess = function(cb){
2184 return cb.success ? function(xhr){
2185 cb.success.call(cb.scope||window, createResponse(cb, xhr));
2188 var createFailure = function(cb){
2189 return cb.failure ? function(xhr){
2190 cb.failure.call(cb.scope||window, createResponse(cb, xhr));
2193 var createResponse = function(cb, xhr){
2200 headerStr = xhr.getAllResponseHeaders();
2201 Ext.each(headerStr.replace(/\r\n/g, '\n').split('\n'), function(v){
2204 s = v.substr(0, t).toLowerCase();
2205 if(v.charAt(t + 1) == ' '){
2208 headerObj[s] = v.substr(t + 1);
2214 responseText: xhr.responseText,
2215 responseXML : xhr.responseXML,
2216 argument: cb.argument,
2218 statusText: xhr.statusText,
2219 getResponseHeader : function(header){return headerObj[header.toLowerCase()];},
2220 getAllResponseHeaders : function(){return headerStr}
2224 request : function(method, uri, cb, data, options){
2227 parameters: data || '',
2228 timeout: cb.timeout,
2229 onSuccess: createSuccess(cb),
2230 onFailure: createFailure(cb)
2233 var hs = options.headers;
2235 o.requestHeaders = hs;
2237 if(options.xmlData){
2238 method = (method ? method : (options.method ? options.method : 'POST'));
2239 if (!hs || !hs['Content-Type']){
2240 o.contentType = 'text/xml';
2242 o.postBody = options.xmlData;
2243 delete o.parameters;
2245 if(options.jsonData){
2246 method = (method ? method : (options.method ? options.method : 'POST'));
2247 if (!hs || !hs['Content-Type']){
2248 o.contentType = 'application/json';
2250 o.postBody = typeof options.jsonData == 'object' ? Ext.encode(options.jsonData) : options.jsonData;
2251 delete o.parameters;
2254 new Ajax.Request(uri, o);
2257 formRequest : function(form, uri, cb, data, isUpload, sslUri){
2258 new Ajax.Request(uri, {
2259 method: Ext.getDom(form).method ||'POST',
2260 parameters: Form.serialize(form)+(data?'&'+data:''),
2261 timeout: cb.timeout,
2262 onSuccess: createSuccess(cb),
2263 onFailure: createFailure(cb)
2267 isCallInProgress : function(trans){
2271 abort : function(trans){
2275 serializeForm : function(form){
2276 return Form.serialize(form.dom||form);
2282 Ext.lib.Anim = function(){
2285 easeOut: function(pos) {
2286 return 1-Math.pow(1-pos,2);
2288 easeIn: function(pos) {
2289 return 1-Math.pow(1-pos,2);
2292 var createAnim = function(cb, scope){
2294 stop : function(skipToLast){
2295 this.effect.cancel();
2298 isAnimated : function(){
2299 return this.effect.state == 'running';
2302 proxyCallback : function(){
2303 Ext.callback(cb, scope);
2308 scroll : function(el, args, duration, easing, cb, scope){
2309 // not supported so scroll immediately?
2310 var anim = createAnim(cb, scope);
2311 el = Ext.getDom(el);
2312 if(typeof args.scroll.to[0] == 'number'){
2313 el.scrollLeft = args.scroll.to[0];
2315 if(typeof args.scroll.to[1] == 'number'){
2316 el.scrollTop = args.scroll.to[1];
2318 anim.proxyCallback();
2322 motion : function(el, args, duration, easing, cb, scope){
2323 return this.run(el, args, duration, easing, cb, scope);
2326 color : function(el, args, duration, easing, cb, scope){
2327 return this.run(el, args, duration, easing, cb, scope);
2330 run : function(el, args, duration, easing, cb, scope, type){
2333 switch(k){ // scriptaculous doesn't support, so convert these
2335 var by, pts, e = Ext.fly(el, '_animrun');
2337 if(by = args.points.by){
2339 pts = e.translatePoints([xy[0]+by[0], xy[1]+by[1]]);
2341 pts = e.translatePoints(args.points.to);
2343 o.left = pts.left+'px';
2344 o.top = pts.top+'px';
2347 o.width = args.width.to+'px';
2350 o.height = args.height.to+'px';
2353 o.opacity = String(args.opacity.to);
2356 o[k] = String(args[k].to);
2360 var anim = createAnim(cb, scope);
2361 anim.effect = new Effect.Morph(Ext.id(el), {
2363 afterFinish: anim.proxyCallback,
2364 transition: easings[easing] || Effect.Transitions.linear,
2373 // all lib flyweight calls use their own flyweight to prevent collisions with developer flyweights
2376 libFlyweight = new Ext.Element.Flyweight();
2378 libFlyweight.dom = el;
2379 return libFlyweight;
2382 Ext.lib.Region = function(t, r, b, l) {
2391 Ext.lib.Region.prototype = {
2392 contains : function(region) {
2393 return ( region.left >= this.left &&
2394 region.right <= this.right &&
2395 region.top >= this.top &&
2396 region.bottom <= this.bottom );
2400 getArea : function() {
2401 return ( (this.bottom - this.top) * (this.right - this.left) );
2404 intersect : function(region) {
2405 var t = Math.max( this.top, region.top );
2406 var r = Math.min( this.right, region.right );
2407 var b = Math.min( this.bottom, region.bottom );
2408 var l = Math.max( this.left, region.left );
2410 if (b >= t && r >= l) {
2411 return new Ext.lib.Region(t, r, b, l);
2416 union : function(region) {
2417 var t = Math.min( this.top, region.top );
2418 var r = Math.max( this.right, region.right );
2419 var b = Math.max( this.bottom, region.bottom );
2420 var l = Math.min( this.left, region.left );
2422 return new Ext.lib.Region(t, r, b, l);
2425 constrainTo : function(r) {
2426 this.top = this.top.constrain(r.top, r.bottom);
2427 this.bottom = this.bottom.constrain(r.top, r.bottom);
2428 this.left = this.left.constrain(r.left, r.right);
2429 this.right = this.right.constrain(r.left, r.right);
2433 adjust : function(t, l, b, r){
2442 Ext.lib.Region.getRegion = function(el) {
2443 var p = Ext.lib.Dom.getXY(el);
2446 var r = p[0] + el.offsetWidth;
2447 var b = p[1] + el.offsetHeight;
2450 return new Ext.lib.Region(t, r, b, l);
2453 Ext.lib.Point = function(x, y) {
2454 if (Ext.isArray(x)) {
2458 this.x = this.right = this.left = this[0] = x;
2459 this.y = this.top = this.bottom = this[1] = y;
2462 Ext.lib.Point.prototype = new Ext.lib.Region();
2467 function fnCleanUp() {
2468 var p = Function.prototype;
2469 delete p.createSequence;
2471 delete p.createDelegate;
2472 delete p.createCallback;
2473 delete p.createInterceptor;
2475 window.detachEvent("onunload", fnCleanUp);
2477 window.attachEvent("onunload", fnCleanUp);