X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/ee06f37b0f6f6d94cd05a6ffae556660f7c4a2bc..c930e9176a5a85509c5b0230e2bff5c22a591432:/src/core/core/Ext.js diff --git a/src/core/core/Ext.js b/src/core/core/Ext.js new file mode 100644 index 00000000..497694ec --- /dev/null +++ b/src/core/core/Ext.js @@ -0,0 +1,922 @@ +/*! + * Ext JS Library 3.0.0 + * Copyright(c) 2006-2009 Ext JS, LLC + * licensing@extjs.com + * http://www.extjs.com/license + */ + +// for old browsers +window.undefined = window.undefined; + +/** + * @class Ext + * Ext core utilities and functions. + * @singleton + */ + +Ext = { + /** + * The version of the framework + * @type String + */ + version : '3.0' +}; + +/** + * Copies all the properties of config to obj. + * @param {Object} obj The receiver of the properties + * @param {Object} config The source of the properties + * @param {Object} defaults A different object that will also be applied for default values + * @return {Object} returns obj + * @member Ext apply + */ +Ext.apply = function(o, c, defaults){ + // no "this" reference for friendly out of scope calls + if(defaults){ + Ext.apply(o, defaults); + } + if(o && c && typeof c == 'object'){ + for(var p in c){ + o[p] = c[p]; + } + } + return o; +}; + +(function(){ + var idSeed = 0, + toString = Object.prototype.toString, + //assume it's not null and not an array + isIterable = function(v){ + //check for array or arguments + if(Ext.isArray(v) || v.callee){ + return true; + } + //check for node list type + if(/NodeList|HTMLCollection/.test(toString.call(v))){ + return true; + } + //NodeList has an item and length property + //IXMLDOMNodeList has nextNode method, needs to be checked first. + return ((v.nextNode || v.item) && Ext.isNumber(v.length)); + }, + ua = navigator.userAgent.toLowerCase(), + check = function(r){ + return r.test(ua); + }, + DOC = document, + isStrict = DOC.compatMode == "CSS1Compat", + isOpera = check(/opera/), + isChrome = check(/chrome/), + isWebKit = check(/webkit/), + isSafari = !isChrome && check(/safari/), + isSafari2 = isSafari && check(/applewebkit\/4/), // unique to Safari 2 + isSafari3 = isSafari && check(/version\/3/), + isSafari4 = isSafari && check(/version\/4/), + isIE = !isOpera && check(/msie/), + isIE7 = isIE && check(/msie 7/), + isIE8 = isIE && check(/msie 8/), + isIE6 = isIE && !isIE7 && !isIE8, + isGecko = !isWebKit && check(/gecko/), + isGecko2 = isGecko && check(/rv:1\.8/), + isGecko3 = isGecko && check(/rv:1\.9/), + isBorderBox = isIE && !isStrict, + isWindows = check(/windows|win32/), + isMac = check(/macintosh|mac os x/), + isAir = check(/adobeair/), + isLinux = check(/linux/), + isSecure = /^https/i.test(window.location.protocol); + + // remove css image flicker + if(isIE6){ + try{ + DOC.execCommand("BackgroundImageCache", false, true); + }catch(e){} + } + + Ext.apply(Ext, { + /** + * URL to a blank file used by Ext when in secure mode for iframe src and onReady src to prevent + * the IE insecure content warning (defaults to javascript:false). + * @type String + */ + SSL_SECURE_URL : 'javascript:false', + /** + * True if the browser is in strict (standards-compliant) mode, as opposed to quirks mode + * @type Boolean + */ + isStrict : isStrict, + /** + * True if the page is running over SSL + * @type Boolean + */ + isSecure : isSecure, + /** + * True when the document is fully initialized and ready for action + * @type Boolean + */ + isReady : false, + + /** + * True if the {@link Ext.Fx} Class is available + * @type Boolean + * @property enableFx + */ + + /** + * True to automatically uncache orphaned Ext.Elements periodically (defaults to true) + * @type Boolean + */ + enableGarbageCollector : true, + + /** + * True to automatically purge event listeners after uncaching an element (defaults to false). + * Note: this only happens if {@link #enableGarbageCollector} is true. + * @type Boolean + */ + enableListenerCollection : false, + + /** + * Indicates whether to use native browser parsing for JSON methods. + * This option is ignored if the browser does not support native JSON methods. + * Note: Native JSON methods will not work with objects that have functions. + * Also, property names must be quoted, otherwise the data will not parse. (Defaults to false) + * @type Boolean + */ + USE_NATIVE_JSON : false, + + /** + * Copies all the properties of config to obj if they don't already exist. + * @param {Object} obj The receiver of the properties + * @param {Object} config The source of the properties + * @return {Object} returns obj + */ + applyIf : function(o, c){ + if(o){ + for(var p in c){ + if(Ext.isEmpty(o[p])){ + o[p] = c[p]; + } + } + } + return o; + }, + + /** + * Generates unique ids. If the element already has an id, it is unchanged + * @param {Mixed} el (optional) The element to generate an id for + * @param {String} prefix (optional) Id prefix (defaults "ext-gen") + * @return {String} The generated Id. + */ + id : function(el, prefix){ + return (el = Ext.getDom(el) || {}).id = el.id || (prefix || "ext-gen") + (++idSeed); + }, + + /** + * Extends one class with another class and optionally overrides members with the passed literal. This class + * also adds the function "override()" to the class that can be used to override + * members on an instance. + * *
+ * This function also supports a 2-argument call in which the subclass's constructor is + * not passed as an argument. In this form, the parameters are as follows:
+ *
superclass
+ * overrides
+ * + * 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.
+ * For example, to create a subclass of the Ext GridPanel: + *
+MyGridPanel = Ext.extend(Ext.grid.GridPanel, {
+ constructor: function(config) {
+ // Your preprocessing here
+ MyGridPanel.superclass.constructor.apply(this, arguments);
+ // Your postprocessing here
+ },
+
+ yourMethod: function() {
+ // etc.
+ }
+});
+
+ *
+ * @param {Function} subclass The class inheriting the functionality
+ * @param {Function} superclass The class being extended
+ * @param {Object} overrides (optional) A literal with members which are copied into the subclass's
+ * prototype, and are therefore shared between all instances of the new class.
+ * @return {Function} The subclass constructor.
+ * @method extend
+ */
+ 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){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.
+ }
+});
+
+ * @param {Object} origclass The class to override
+ * @param {Object} overrides The list of functions to add to origClass. This should be specified as an object literal
+ * containing one or more methods.
+ * @method override
+ */
+ override : function(origclass, overrides){
+ if(overrides){
+ var p = origclass.prototype;
+ Ext.apply(p, overrides);
+ if(Ext.isIE && overrides.toString != origclass.toString){
+ p.toString = overrides.toString;
+ }
+ }
+ },
+
+ /**
+ * Creates namespaces to be used for scoping variables and classes so that they are not global.
+ * Specifying the last node of a namespace implicitly creates all other nodes. Usage:
+ *
+Ext.namespace('Company', 'Company.data');
+Ext.namespace('Company.data'); // equivalent and preferable to above syntax
+Company.Widget = function() { ... }
+Company.data.CustomStore = function(config) { ... }
+
+ * @param {String} namespace1
+ * @param {String} namespace2
+ * @param {String} etc
+ * @method namespace
+ */
+ namespace : function(){
+ var o, d;
+ Ext.each(arguments, function(v) {
+ d = v.split(".");
+ o = window[d[0]] = window[d[0]] || {};
+ Ext.each(d.slice(1), function(v2){
+ o = o[v2] = o[v2] || {};
+ });
+ });
+ return o;
+ },
+
+ /**
+ * 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.
+ * @param {Object} o
+ * @param {String} pre (optional) A prefix to add to the url encoded string
+ * @return {String}
+ */
+ urlEncode: function(o, pre){
+ var undef, buf = [], key, e = encodeURIComponent;
+
+ for(key in o){
+ undef = !Ext.isDefined(o[key]);
+ Ext.each(undef ? key : o[key], function(val, i){
+ buf.push("&", e(key), "=", (val != key || !undef) ? e(val) : "");
+ });
+ }
+ if(!pre){
+ buf.shift();
+ pre = "";
+ }
+ return pre + buf.join('');
+ },
+
+ /**
+ * Takes an encoded URL and and converts it to an object. Example:
+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"]}
+
+ * @param {String} string
+ * @param {Boolean} overwrite (optional) Items of the same name will overwrite previous values instead of creating an an array (Defaults to false).
+ * @return {Object} A literal with members
+ */
+ urlDecode : function(string, overwrite){
+ var obj = {},
+ pairs = string.split('&'),
+ d = decodeURIComponent,
+ name,
+ value;
+ Ext.each(pairs, function(pair) {
+ pair = pair.split('=');
+ name = d(pair[0]);
+ value = d(pair[1]);
+ obj[name] = overwrite || !obj[name] ? value :
+ [].concat(obj[name]).concat(value);
+ });
+ return obj;
+ },
+
+ /**
+ * Appends content to the query string of a URL, which handles logic for whether to place
+ * a question mark or ampersand.
+ * @param {String} url The url to append to.
+ * @@param {String} s The content to append to the url.
+ * @return (String) The appended string
+ */
+ urlAppend : function(url, s){
+ if(!Ext.isEmpty(s)){
+ return url + (url.indexOf('?') === -1 ? '?' : '&') + s;
+ }
+ return url;
+ },
+
+ /**
+ * Converts any iterable (numeric indices and a length property) into a true array
+ * Don't use this on strings. IE doesn't support "abc"[0] which this implementation depends on.
+ * For strings, use this instead: "abc".match(/./g) => [a,b,c];
+ * @param {Iterable} the iterable object to be turned into a true Array.
+ * @return (Array) array
+ */
+ toArray : function(){
+ return isIE ?
+ function(a, i, j, res){
+ res = [];
+ Ext.each(a, function(v) {
+ res.push(v);
+ });
+ return res.slice(i || 0, j || res.length);
+ } :
+ function(a, i, j){
+ return Array.prototype.slice.call(a, i || 0, j || a.length);
+ }
+ }(),
+
+ /**
+ * Iterates an array calling the passed function with each item, stopping if your function returns false. If the
+ * passed array is not really an array, your function is called once with it.
+ * The supplied function is called with (Object item, Number index, Array allItems).
+ * @param {Array/NodeList/Mixed} array
+ * @param {Function} fn
+ * @param {Object} scope
+ */
+ each: function(array, fn, scope){
+ if(Ext.isEmpty(array, true)){
+ return;
+ }
+ if(!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:
+ *
+// 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
+}
+ *
+ * Note: the dom node to be found actually needs to exist (be rendered, etc)
+ * when this method is called to be successful.
+ * @param {Mixed} el
+ * @return HTMLElement
+ */
+ getDom : function(el){
+ if(!el || !DOC){
+ return null;
+ }
+ return el.dom ? el.dom : (Ext.isString(el) ? DOC.getElementById(el) : el);
+ },
+
+ /**
+ * Returns the current document body as an {@link Ext.Element}.
+ * @return Ext.Element The document body
+ */
+ getBody : function(){
+ return Ext.get(DOC.body || DOC.documentElement);
+ },
+
+ /**
+ * Removes a DOM node from the document. The body node will be ignored if passed in.
+ * @param {HTMLElement} node The node to remove
+ */
+ removeNode : isIE ? function(){
+ var d;
+ return function(n){
+ if(n && n.tagName != 'BODY'){
+ d = d || DOC.createElement('div');
+ d.appendChild(n);
+ d.innerHTML = '';
+ }
+ }
+ }() : function(n){
+ if(n && n.parentNode && n.tagName != 'BODY'){
+ n.parentNode.removeChild(n);
+ }
+ },
+
+ /**
+ * 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) { ... }
+
+ * @param {String} namespace1
+ * @param {String} namespace2
+ * @param {String} etc
+ * @method namespace
+ */
+ Ext.ns = Ext.namespace;
+})();
+
+Ext.ns("Ext", "Ext.util", "Ext.lib", "Ext.data");
+
+
+/**
+ * @class Function
+ * These functions are available on every Function object (any JavaScript function).
+ */
+Ext.apply(Function.prototype, {
+ /**
+ * Creates an interceptor function. The passed fcn is called before the original one. If it returns false,
+ * the original one is not called. The resulting function returns the results of the original function.
+ * The passed fcn is called with the parameters of the original function. Example usage:
+ *
+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"
+
+ * @param {Function} fcn The function to call before the original
+ * @param {Object} scope (optional) The scope of the passed fcn (Defaults to scope of original function or 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')
+});
+
+ * @return {Function} The new function
+ */
+ createCallback : function(/*args...*/){
+ // make args available, in function below
+ var args = arguments,
+ method = this;
+ return function() {
+ return method.apply(window, args);
+ };
+ },
+
+ /**
+ * Creates a delegate (callback) that sets the scope to obj.
+ * Call directly on any function. Example: 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']));
+
+ * @param {Object} obj (optional) The object for which the scope is set
+ * @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);
+
+ * @param {Number} millis The number of milliseconds for the setTimeout call (if less than or equal to 0 the function is executed immediately)
+ * @param {Object} obj (optional) The object for which the scope is set
+ * @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>'
+ *
+ * @param {String} string The tokenized string to be formatted
+ * @param {String} value1 The value to replace token {0}
+ * @param {String} value2 Etc...
+ * @return {String} The formatted string
+ * @static
+ */
+ format : function(format){
+ var args = Ext.toArray(arguments, 1);
+ return format.replace(/\{(\d+)\}/g, function(m, i){
+ return args[i];
+ });
+ }
+});
+
+/**
+ * @class Array
+ */
+Ext.applyIf(Array.prototype, {
+ /**
+ * Checks whether or not the specified object exists in the array.
+ * @param {Object} o The object to check for
+ * @return {Number} The index of o in the array (or -1 if it is not found)
+ */
+ indexOf : function(o){
+ for (var i = 0, len = this.length; i < len; i++){
+ if(this[i] == o){
+ return i;
+ }
+ }
+ return -1;
+ },
+
+ /**
+ * Removes the specified object from the array. If the object is not found nothing happens.
+ * @param {Object} o The object to remove
+ * @return {Array} this array
+ */
+ remove : function(o){
+ var index = this.indexOf(o);
+ if(index != -1){
+ this.splice(index, 1);
+ }
+ return this;
+ }
+});