Extends one class to create a subclass and optionally overrides members with the passed literal. This method + * also adds the function "override()" to the subclass that can be used to override members of the class.
+ * For example, to create a subclass of Ext GridPanel: + *
+MyGridPanel = Ext.extend(Ext.grid.GridPanel, {
+ constructor: function(config) {
+
+// Create configuration for this Grid.
+ var store = new Ext.data.Store({...});
+ var colModel = new Ext.grid.ColumnModel({...});
+
+// Create a new config object containing our computed properties
+// *plus* whatever was in the config parameter.
+ config = Ext.apply({
+ store: store,
+ colModel: colModel
+ }, config);
+
+ MyGridPanel.superclass.constructor.call(this, config);
+
+// Your postprocessing here
+ },
+
+ yourMethod: function() {
+ // etc.
+ }
+});
+This function also supports a 3-argument call in which the subclass's constructor is + * passed as an argument. In this form, the parameters are as follows:
+ *subclass : Function superclass : Function overrides : Object A literal with members which are copied into the subclass's + * prototype, and are therefore shared between all instances of the new class.
+ *This may contain a special member named constructor. This is used + * to define the constructor of the new class, and is returned. If this property is + * not specified, a constructor is generated and returned which just calls the + * superclass's constructor passing on its parameters.
+ *It is essential that you call the superclass constructor in any provided constructor. See example code.
+ * @return {Function} The subclass constructor from theoverrides parameter, or a generated one if not provided.
+ */
+ extend : function(){
+ // inline overrides
+ var io = function(o){
+ for(var m in o){
+ this[m] = o[m];
+ }
+ };
+ var oc = Object.prototype.constructor;
+
+ return function(sb, sp, overrides){
+ if(Ext.isObject(sp)){
+ overrides = sp;
+ sp = sb;
+ sb = overrides.constructor != oc ? overrides.constructor : function(){sp.apply(this, arguments);};
+ }
+ var F = function(){},
+ sbp,
+ spp = sp.prototype;
+
+ F.prototype = spp;
+ sbp = sb.prototype = new F();
+ sbp.constructor=sb;
+ sb.superclass=spp;
+ if(spp.constructor == oc){
+ spp.constructor=sp;
+ }
+ sb.override = function(o){
+ Ext.override(sb, o);
+ };
+ sbp.superclass = sbp.supr = (function(){
+ return spp;
+ });
+ sbp.override = io;
+ Ext.override(sb, overrides);
+ sb.extend = function(o){return Ext.extend(sb, o);};
+ return sb;
+ };
+ }(),
+
+ /**
+ * Adds a list of functions to the prototype of an existing class, overwriting any existing methods with the same name.
+ * Usage:
+Ext.override(MyClass, {
+ newMethod1: function(){
+ // etc.
+ },
+ newMethod2: function(foo){
+ // etc.
+ }
+});
+
+Ext.namespace('Company', 'Company.data');
+Ext.namespace('Company.data'); // equivalent and preferable to above syntax
+Company.Widget = function() { ... }
+Company.data.CustomStore = function(config) { ... }
+
+Ext.urlDecode("foo=1&bar=2"); // returns {foo: "1", bar: "2"}
+Ext.urlDecode("foo=1&bar=2&bar=3&bar=4", false); // returns {foo: "1", bar: ["2", "3", "4"]}
+index. This function is called with
+ * the following arguments:
+ * item : Mixed
+ * index
+ * in the passed arrayindex : Number
+ * allItems : Array
+ * array passed as the first
+ * argument to Ext.each.this reference) in which the specified function is executed.
+ * Defaults to the item at the current index
+ * within the passed array.
+ * @return See description for the fn parameter.
+ */
+ each : function(array, fn, scope){
+ if(Ext.isEmpty(array, true)){
+ return;
+ }
+ if(!Ext.isIterable(array) || Ext.isPrimitive(array)){
+ array = [array];
+ }
+ for(var i = 0, len = array.length; i < len; i++){
+ if(fn.call(scope || array[i], array[i], i, array) === false){
+ return i;
+ };
+ }
+ },
+
+ /**
+ * Iterates either the elements in an array, or each of the properties in an object.
+ * Note: If you are only iterating arrays, it is better to call {@link #each}.
+ * @param {Object/Array} object The object or array to be iterated
+ * @param {Function} fn The function to be called for each iteration.
+ * The iteration will stop if the supplied function returns false, or
+ * all array elements / object properties have been covered. The signature
+ * varies depending on the type of object being interated:
+ * this reference) in which the specified function is executed. Defaults to
+ * the object being iterated.
+ */
+ iterate : function(obj, fn, scope){
+ if(Ext.isEmpty(obj)){
+ return;
+ }
+ if(Ext.isIterable(obj)){
+ Ext.each(obj, fn, scope);
+ return;
+ }else if(Ext.isObject(obj)){
+ for(var prop in obj){
+ if(obj.hasOwnProperty(prop)){
+ if(fn.call(scope || obj, prop, obj[prop], obj) === false){
+ return;
+ };
+ }
+ }
+ }
+ },
+
+ /**
+ * Return the dom node for the passed String (id), dom node, or Ext.Element.
+ * Here are some examples:
+ *
+// gets dom node based on id
+var elDom = Ext.getDom('elId');
+// gets dom node based on the dom node
+var elDom1 = Ext.getDom(elDom);
+
+// If we don't know if we are working with an
+// Ext.Element or a dom node use Ext.getDom
+function(el){
+ var dom = Ext.getDom(el);
+ // do something with the dom node
+}
+ * Removes this element from the document, removes all DOM event listeners, and deletes the cache reference.
+ * All DOM event listeners are removed from this element. If {@link Ext#enableNestedListenerRemoval} is
+ * true, then DOM event listeners are also removed from all child nodes. The body node
+ * will be ignored if passed in.
Returns true if the passed value is empty.
+ *The value is deemed to be empty if it is
+Ext.namespace('Company', 'Company.data');
+Ext.namespace('Company.data'); // equivalent and preferable to above syntax
+Company.Widget = function() { ... }
+Company.data.CustomStore = function(config) { ... }
+
+var sayHi = function(name){
+ alert('Hi, ' + name);
+}
+
+sayHi('Fred'); // alerts "Hi, Fred"
+
+// create a new function that validates input without
+// directly modifying the original function:
+var sayHiToFriend = sayHi.createInterceptor(function(name){
+ return name == 'Brian';
+});
+
+sayHiToFriend('Fred'); // no alert
+sayHiToFriend('Brian'); // alerts "Hi, Brian"
+this reference) in which the passed function is executed.
+ * If omitted, defaults to the scope in which the original function is called or the browser window.
+ * @return {Function} The new function
+ */
+ createInterceptor : function(fcn, scope){
+ var method = this;
+ return !Ext.isFunction(fcn) ?
+ this :
+ function() {
+ var me = this,
+ args = arguments;
+ fcn.target = me;
+ fcn.method = method;
+ return (fcn.apply(scope || me || window, args) !== false) ?
+ method.apply(me || window, args) :
+ null;
+ };
+ },
+
+ /**
+ * Creates a callback that passes arguments[0], arguments[1], arguments[2], ...
+ * Call directly on any function. Example: myFunction.createCallback(arg1, arg2)
+ * Will create a function that is bound to those 2 args. If a specific scope is required in the
+ * callback, use {@link #createDelegate} instead. The function returned by createCallback always
+ * executes in the window scope.
+ * This method is required when you want to pass arguments to a callback function. If no arguments + * are needed, you can simply pass a reference to the function as a callback (e.g., callback: myFn). + * However, if you tried to pass a function with arguments (e.g., callback: myFn(arg1, arg2)) the function + * would simply execute immediately when the code is parsed. Example usage: + *
+var sayHi = function(name){
+ alert('Hi, ' + name);
+}
+
+// clicking the button alerts "Hi, Fred"
+new Ext.Button({
+ text: 'Say Hi',
+ renderTo: Ext.getBody(),
+ handler: sayHi.createCallback('Fred')
+});
+this.myFunction.createDelegate(this, [arg1, arg2])
+ * Will create a function that is automatically scoped to obj so that the this variable inside the
+ * callback points to obj. Example usage:
+ *
+var sayHi = function(name){
+ // Note this use of "this.text" here. This function expects to
+ // execute within a scope that contains a text property. In this
+ // example, the "this" variable is pointing to the btn object that
+ // was passed in createDelegate below.
+ alert('Hi, ' + name + '. You clicked the "' + this.text + '" button.');
+}
+
+var btn = new Ext.Button({
+ text: 'Say Hi',
+ renderTo: Ext.getBody()
+});
+
+// This callback will execute in the scope of the
+// button instance. Clicking the button alerts
+// "Hi, Fred. You clicked the "Say Hi" button."
+btn.on('click', sayHi.createDelegate(btn, ['Fred']));
+this reference) in which the function is executed.
+ * If omitted, defaults to the browser window.
+ * @param {Array} args (optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)
+ * @param {Boolean/Number} appendArgs (optional) if True args are appended to call args instead of overriding,
+ * if a number the args are inserted at the specified position
+ * @return {Function} The new function
+ */
+ createDelegate : function(obj, args, appendArgs){
+ var method = this;
+ return function() {
+ var callArgs = args || arguments;
+ if (appendArgs === true){
+ callArgs = Array.prototype.slice.call(arguments, 0);
+ callArgs = callArgs.concat(args);
+ }else if (Ext.isNumber(appendArgs)){
+ callArgs = Array.prototype.slice.call(arguments, 0); // copy arguments first
+ var applyArgs = [appendArgs, 0].concat(args); // create method call params
+ Array.prototype.splice.apply(callArgs, applyArgs); // splice them in
+ }
+ return method.apply(obj || window, callArgs);
+ };
+ },
+
+ /**
+ * Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:
+ *
+var sayHi = function(name){
+ alert('Hi, ' + name);
+}
+
+// executes immediately:
+sayHi('Fred');
+
+// executes after 2 seconds:
+sayHi.defer(2000, this, ['Fred']);
+
+// this syntax is sometimes useful for deferring
+// execution of an anonymous function:
+(function(){
+ alert('Anonymous');
+}).defer(100);
+this reference) in which the function is executed.
+ * If omitted, defaults to the browser window.
+ * @param {Array} args (optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)
+ * @param {Boolean/Number} appendArgs (optional) if True args are appended to call args instead of overriding,
+ * if a number the args are inserted at the specified position
+ * @return {Number} The timeout id that can be used with clearTimeout
+ */
+ defer : function(millis, obj, args, appendArgs){
+ var fn = this.createDelegate(obj, args, appendArgs);
+ if(millis > 0){
+ return setTimeout(fn, millis);
+ }
+ fn();
+ return 0;
+ }
+});
+
+/**
+ * @class String
+ * These functions are available on every String object.
+ */
+Ext.applyIf(String, {
+ /**
+ * Allows you to define a tokenized string and pass an arbitrary number of arguments to replace the tokens. Each
+ * token must be unique, and must increment in the format {0}, {1}, etc. Example usage:
+ *
+var cls = 'my-class', text = 'Some text';
+var s = String.format('<div class="{0}">{1}</div>', cls, text);
+// s now contains the string: '<div class="my-class">Some text</div>'
+ * Utility method for returning a default value if the passed value is empty.
+ *The value is deemed to be empty if it is
+Ext.addBehaviors({
+ // add a listener for click on all anchors in element with id foo
+ '#foo a@click' : function(e, t){
+ // do something
+ },
+
+ // add the same listener to multiple selectors (separated by comma BEFORE the @)
+ '#foo a, #bar span.some-class@mouseover' : function(){
+ // do something
+ }
+});
+ * example:
+ImageComponent = Ext.extend(Ext.BoxComponent, {
+ initComponent: function() {
+ this.autoEl = { tag: 'img' };
+ MyComponent.superclass.initComponent.apply(this, arguments);
+ this.initialBox = Ext.copyTo({}, this.initialConfig, 'x,y,width,height');
+ }
+});
+ *
+// Example 1:
+Ext.partition([true, false, true, true, false]); // [[true, true, true], [false, false]]
+
+// Example 2:
+Ext.partition(
+ Ext.query("p"),
+ function(val){
+ return val.className == "class1"
+ }
+);
+// true are those paragraph elements with a className of "class1",
+// false set are those that do not have that className.
+ *
+// Example:
+Ext.invoke(Ext.query("p"), "getAttribute", "id");
+// [el1.getAttribute("id"), el2.getAttribute("id"), ..., elN.getAttribute("id")]
+ *
+// Example:
+Ext.pluck(Ext.query("p"), "className"); // [el1.className, el2.className, ..., elN.className]
+ * Zips N sets together.
+ *
+// Example 1:
+Ext.zip([1,2,3],[4,5,6]); // [[1,4],[2,5],[3,6]]
+// Example 2:
+Ext.zip(
+ [ "+", "-", "+"],
+ [ 12, 10, 22],
+ [ 43, 15, 96],
+ function(a, b, c){
+ return "$" + a + "" + b + "." + c
+ }
+); // ["$+12.43", "$-10.15", "$+22.96"]
+ *
+var sayHi = function(name){
+ alert('Hi, ' + name);
+}
+
+sayHi('Fred'); // alerts "Hi, Fred"
+
+var sayGoodbye = sayHi.createSequence(function(name){
+ alert('Bye, ' + name);
+});
+
+sayGoodbye('Fred'); // both alerts show
+this reference) in which the passed function is executed.
+ * If omitted, defaults to the scope in which the original function is called or the browser window.
+ * @return {Function} The new function
+ */
+ createSequence : function(fcn, scope){
+ var method = this;
+ return !Ext.isFunction(fcn) ?
+ this :
+ function(){
+ var retval = method.apply(this || window, arguments);
+ fcn.apply(scope || this || window, arguments);
+ return retval;
+ };
+ }
+});
+
+
+/**
+ * @class String
+ * These functions are available as static methods on the JavaScript String object.
+ */
+Ext.applyIf(String, {
+
+ /**
+ * Escapes the passed string for ' and \
+ * @param {String} string The string to escape
+ * @return {String} The escaped string
+ * @static
+ */
+ escape : function(string) {
+ return string.replace(/('|\\)/g, "\\$1");
+ },
+
+ /**
+ * Pads the left side of a string with a specified character. This is especially useful
+ * for normalizing number and date strings. Example usage:
+ *
+var s = String.leftPad('123', 5, '0');
+// s now contains the string: '00123'
+ *
+// alternate sort directions
+sort = sort.toggle('ASC', 'DESC');
+
+// instead of conditional logic:
+sort = (sort == 'ASC' ? 'DESC' : 'ASC');
+
+var s = ' foo bar ';
+alert('-' + s + '-'); //alerts "- foo bar -"
+alert('-' + s.trim() + '-'); //alerts "-foo bar-"
+
+// Start a simple clock task that updates a div once per second
+var updateClock = function(){
+ Ext.fly('clock').update(new Date().format('g:i:s A'));
+}
+var task = {
+ run: updateClock,
+ interval: 1000 //1 second
+}
+var runner = new Ext.util.TaskRunner();
+runner.start(task);
+
+// equivalent using TaskMgr
+Ext.TaskMgr.start({
+ run: updateClock,
+ interval: 1000
+});
+
+ * run : Functionargs argument if specified. If a
+ * particular scope is required, be sure to specify it using the scope argument.interval : Numberargs : Arrayrun.scope : Objectrun function. Defaults to the task config object.duration : Numberrepeat : Number
+// Start a simple clock task that updates a div once per second
+var task = {
+ run: function(){
+ Ext.fly('clock').update(new Date().format('g:i:s A'));
+ },
+ interval: 1000 //1 second
+}
+Ext.TaskMgr.start(task);
+