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(typeof sp == 'object'){
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(typeof obj == 'object'){
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.
* Optional 'strict' flag is needed for IE since it can return 'name' and
* 'id' elements by using getElementById.
* 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>'
*
// 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
});
* See the {@link #start} method for details about how to configure a task object.
* Also see {@link Ext.util.DelayedTask}. * * @constructor * @param {Number} interval (optional) The minimum precision in milliseconds supported by this TaskRunner instance * (defaults to 10) */ Ext.util.TaskRunner = function(interval){ interval = interval || 10; var tasks = [], removeQueue = [], id = 0, running = false, // private stopThread = function(){ running = false; clearInterval(id); id = 0; }, // private startThread = function(){ if(!running){ running = true; id = setInterval(runTasks, interval); } }, // private removeTask = function(t){ removeQueue.push(t); if(t.onStop){ t.onStop.apply(t.scope || t); } }, // private runTasks = function(){ var rqLen = removeQueue.length, now = new Date().getTime(); if(rqLen > 0){ for(var i = 0; i < rqLen; i++){ tasks.remove(removeQueue[i]); } removeQueue = []; if(tasks.length < 1){ stopThread(); return; } } for(var i = 0, t, itime, rt, len = tasks.length; i < len; ++i){ t = tasks[i]; itime = now - t.taskRunTime; if(t.interval <= itime){ rt = t.run.apply(t.scope || t, t.args || [++t.taskRunCount]); t.taskRunTime = now; if(rt === false || t.taskRunCount === t.repeat){ removeTask(t); return; } } if(t.duration && t.duration <= (now - t.taskStartTime)){ removeTask(t); } } }; /** * Starts a new task. * @method start * @param {Object} taskA config object that supports the following properties:
run : FunctionThe function to execute each time the task is invoked. The
* function will be called at each interval and passed the args argument if specified, and the
* current invocation count if not.
If a particular scope (this reference) is required, be sure to specify it using the scope argument.
Return false from this function to terminate the task.
interval : Numberargs : Arrayrun. If not specified, the current invocation count is passed.scope : Objectrun function. Defaults to the task config object.duration : Numberrepeat : NumberBefore each invocation, Ext injects the property taskRunCount into the task object so
* that calculations based on the repeat count can be performed.
// 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);
See the {@link #start} method for details about how to configure a task object.
* @singleton */ Ext.TaskMgr = new Ext.util.TaskRunner();if(typeof YAHOO == "undefined"){ throw "Unable to load Ext, core YUI utilities (yahoo, dom, event) not found."; } (function(){ var E = YAHOO.util.Event, D = YAHOO.util.Dom, CN = YAHOO.util.Connect, ES = YAHOO.util.Easing, A = YAHOO.util.Anim, libFlyweight, version = YAHOO.env.getVersion('yahoo').version.split('.'), mouseEnterSupported = parseInt(version[0], 10) >= 3, mouseCache = {}, elContains = function(parent, child){ if(parent && parent.firstChild){ while(child){ if(child === parent){ return true; } child = child.parentNode; if(child && (child.nodeType != 1)){ child = null; } } } return false; }, checkRelatedTarget = function(e){ return !elContains(e.currentTarget, Ext.lib.Event.getRelatedTarget(e)); }; Ext.lib.Dom = { getViewWidth : function(full){ return full ? D.getDocumentWidth() : D.getViewportWidth(); }, getViewHeight : function(full){ return full ? D.getDocumentHeight() : D.getViewportHeight(); }, isAncestor : function(haystack, needle){ return D.isAncestor(haystack, needle); }, getRegion : function(el){ return D.getRegion(el); }, getY : function(el){ return this.getXY(el)[1]; }, getX : function(el){ return this.getXY(el)[0]; }, // original version based on YahooUI getXY // this version fixes several issues in Safari and FF // and boosts performance by removing the batch overhead, repetitive dom lookups and array index calls getXY : function(el){ var p, pe, b, scroll, bd = (document.body || document.documentElement); el = Ext.getDom(el); if(el == bd){ return [0, 0]; } if (el.getBoundingClientRect) { b = el.getBoundingClientRect(); scroll = fly(document).getScroll(); return [Math.round(b.left + scroll.left), Math.round(b.top + scroll.top)]; } var x = 0, y = 0; p = el; var hasAbsolute = fly(el).getStyle("position") == "absolute"; while (p) { x += p.offsetLeft; y += p.offsetTop; if (!hasAbsolute && fly(p).getStyle("position") == "absolute") { hasAbsolute = true; } if (Ext.isGecko) { pe = fly(p); var bt = parseInt(pe.getStyle("borderTopWidth"), 10) || 0; var bl = parseInt(pe.getStyle("borderLeftWidth"), 10) || 0; x += bl; y += bt; if (p != el && pe.getStyle('overflow') != 'visible') { x += bl; y += bt; } } p = p.offsetParent; } if (Ext.isSafari && hasAbsolute) { x -= bd.offsetLeft; y -= bd.offsetTop; } if (Ext.isGecko && !hasAbsolute) { var dbd = fly(bd); x += parseInt(dbd.getStyle("borderLeftWidth"), 10) || 0; y += parseInt(dbd.getStyle("borderTopWidth"), 10) || 0; } p = el.parentNode; while (p && p != bd) { if (!Ext.isOpera || (p.tagName != 'TR' && fly(p).getStyle("display") != "inline")) { x -= p.scrollLeft; y -= p.scrollTop; } p = p.parentNode; } return [x, y]; }, setXY : function(el, xy){ el = Ext.fly(el, '_setXY'); el.position(); var pts = el.translatePoints(xy); if(xy[0] !== false){ el.dom.style.left = pts.left + "px"; } if(xy[1] !== false){ el.dom.style.top = pts.top + "px"; } }, setX : function(el, x){ this.setXY(el, [x, false]); }, setY : function(el, y){ this.setXY(el, [false, y]); } }; Ext.lib.Event = { getPageX : function(e){ return E.getPageX(e.browserEvent || e); }, getPageY : function(e){ return E.getPageY(e.browserEvent || e); }, getXY : function(e){ return E.getXY(e.browserEvent || e); }, getTarget : function(e){ return E.getTarget(e.browserEvent || e); }, getRelatedTarget : function(e){ return E.getRelatedTarget(e.browserEvent || e); }, on : function(el, eventName, fn, scope, override){ if((eventName == 'mouseenter' || eventName == 'mouseleave') && !mouseEnterSupported){ var item = mouseCache[el.id] || (mouseCache[el.id] = {}); item[eventName] = fn; fn = fn.createInterceptor(checkRelatedTarget); eventName = (eventName == 'mouseenter') ? 'mouseover' : 'mouseout'; } E.on(el, eventName, fn, scope, override); }, un : function(el, eventName, fn){ if((eventName == 'mouseenter' || eventName == 'mouseleave') && !mouseEnterSupported){ var item = mouseCache[el.id], ev = item && item[eventName]; if(ev){ fn = ev.fn; delete item[eventName]; eventName = (eventName == 'mouseenter') ? 'mouseover' : 'mouseout'; } } E.removeListener(el, eventName, fn);; }, purgeElement : function(el){ E.purgeElement(el); }, preventDefault : function(e){ E.preventDefault(e.browserEvent || e); }, stopPropagation : function(e){ E.stopPropagation(e.browserEvent || e); }, stopEvent : function(e){ E.stopEvent(e.browserEvent || e); }, onAvailable : function(el, fn, scope, override){ return E.onAvailable(el, fn, scope, override); } }; Ext.lib.Ajax = { request : function(method, uri, cb, data, options){ if(options){ var hs = options.headers; if(hs){ for(var h in hs){ if(hs.hasOwnProperty(h)){ CN.initHeader(h, hs[h], false); } } } if(options.xmlData){ if (!hs || !hs['Content-Type']){ CN.initHeader('Content-Type', 'text/xml', false); } method = (method ? method : (options.method ? options.method : 'POST')); data = options.xmlData; }else if(options.jsonData){ if (!hs || !hs['Content-Type']){ CN.initHeader('Content-Type', 'application/json', false); } method = (method ? method : (options.method ? options.method : 'POST')); data = typeof options.jsonData == 'object' ? Ext.encode(options.jsonData) : options.jsonData; } } return CN.asyncRequest(method, uri, cb, data); }, formRequest : function(form, uri, cb, data, isUpload, sslUri){ CN.setForm(form, isUpload, sslUri); return CN.asyncRequest(Ext.getDom(form).method ||'POST', uri, cb, data); }, isCallInProgress : function(trans){ return CN.isCallInProgress(trans); }, abort : function(trans){ return CN.abort(trans); }, serializeForm : function(form){ var d = CN.setForm(form.dom || form); CN.resetFormState(); return d; } }; Ext.lib.Region = YAHOO.util.Region; Ext.lib.Point = YAHOO.util.Point; Ext.lib.Anim = { scroll : function(el, args, duration, easing, cb, scope){ this.run(el, args, duration, easing, cb, scope, YAHOO.util.Scroll); }, motion : function(el, args, duration, easing, cb, scope){ this.run(el, args, duration, easing, cb, scope, YAHOO.util.Motion); }, color : function(el, args, duration, easing, cb, scope){ this.run(el, args, duration, easing, cb, scope, YAHOO.util.ColorAnim); }, run : function(el, args, duration, easing, cb, scope, type){ type = type || YAHOO.util.Anim; if(typeof easing == "string"){ easing = YAHOO.util.Easing[easing]; } var anim = new type(el, args, duration, easing); anim.animateX(function(){ Ext.callback(cb, scope); }); return anim; } }; // all lib flyweight calls use their own flyweight to prevent collisions with developer flyweights function fly(el){ if(!libFlyweight){ libFlyweight = new Ext.Element.Flyweight(); } libFlyweight.dom = el; return libFlyweight; } // prevent IE leaks if(Ext.isIE) { function fnCleanUp() { var p = Function.prototype; delete p.createSequence; delete p.defer; delete p.createDelegate; delete p.createCallback; delete p.createInterceptor; window.detachEvent("onunload", fnCleanUp); } window.attachEvent("onunload", fnCleanUp); } // various overrides // add ability for callbacks with animations if(YAHOO.util.Anim){ YAHOO.util.Anim.prototype.animateX = function(callback, scope){ var f = function(){ this.onComplete.unsubscribe(f); if(typeof callback == "function"){ callback.call(scope || this, this); } }; this.onComplete.subscribe(f, this, true); this.animate(); }; } if(YAHOO.util.DragDrop && Ext.dd.DragDrop){ YAHOO.util.DragDrop.defaultPadding = Ext.dd.DragDrop.defaultPadding; YAHOO.util.DragDrop.constrainTo = Ext.dd.DragDrop.constrainTo; } YAHOO.util.Dom.getXY = function(el) { var f = function(el) { return Ext.lib.Dom.getXY(el); }; return YAHOO.util.Dom.batch(el, f, YAHOO.util.Dom, true); }; // workaround for Safari anim duration speed problems if(YAHOO.util.AnimMgr){ YAHOO.util.AnimMgr.fps = 1000; } YAHOO.util.Region.prototype.adjust = function(t, l, b, r){ this.top += t; this.left += l; this.right += r; this.bottom += b; return this; }; YAHOO.util.Region.prototype.constrainTo = function(r) { this.top = this.top.constrain(r.top, r.bottom); this.bottom = this.bottom.constrain(r.top, r.bottom); this.left = this.left.constrain(r.left, r.right); this.right = this.right.constrain(r.left, r.right); return this; }; })();