X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/0494b8d9b9bb03ab6c22b34dae81261e3cd7e3e6..7a654f8d43fdb43d78b63d90528bed6e86b608cc:/src/util/Observable-more.js?ds=sidebyside diff --git a/src/util/Observable-more.js b/src/util/Observable-more.js deleted file mode 100644 index 2570e085..00000000 --- a/src/util/Observable-more.js +++ /dev/null @@ -1,226 +0,0 @@ -/*! - * Ext JS Library 3.3.1 - * Copyright(c) 2006-2010 Sencha Inc. - * licensing@sencha.com - * http://www.sencha.com/license - */ -/** - * @class Ext.util.Observable - */ -Ext.apply(Ext.util.Observable.prototype, function(){ - // this is considered experimental (along with beforeMethod, afterMethod, removeMethodListener?) - // allows for easier interceptor and sequences, including cancelling and overwriting the return value of the call - // private - function getMethodEvent(method){ - var e = (this.methodEvents = this.methodEvents || - {})[method], returnValue, v, cancel, obj = this; - - if (!e) { - this.methodEvents[method] = e = {}; - e.originalFn = this[method]; - e.methodName = method; - e.before = []; - e.after = []; - - var makeCall = function(fn, scope, args){ - if((v = fn.apply(scope || obj, args)) !== undefined){ - if (typeof v == 'object') { - if(v.returnValue !== undefined){ - returnValue = v.returnValue; - }else{ - returnValue = v; - } - cancel = !!v.cancel; - } - else - if (v === false) { - cancel = true; - } - else { - returnValue = v; - } - } - }; - - this[method] = function(){ - var args = Array.prototype.slice.call(arguments, 0), - b; - returnValue = v = undefined; - cancel = false; - - for(var i = 0, len = e.before.length; i < len; i++){ - b = e.before[i]; - makeCall(b.fn, b.scope, args); - if (cancel) { - return returnValue; - } - } - - if((v = e.originalFn.apply(obj, args)) !== undefined){ - returnValue = v; - } - - for(var i = 0, len = e.after.length; i < len; i++){ - b = e.after[i]; - makeCall(b.fn, b.scope, args); - if (cancel) { - return returnValue; - } - } - return returnValue; - }; - } - return e; - } - - return { - // these are considered experimental - // allows for easier interceptor and sequences, including cancelling and overwriting the return value of the call - // adds an 'interceptor' called before the original method - beforeMethod : function(method, fn, scope){ - getMethodEvent.call(this, method).before.push({ - fn: fn, - scope: scope - }); - }, - - // adds a 'sequence' called after the original method - afterMethod : function(method, fn, scope){ - getMethodEvent.call(this, method).after.push({ - fn: fn, - scope: scope - }); - }, - - removeMethodListener: function(method, fn, scope){ - var e = this.getMethodEvent(method); - for(var i = 0, len = e.before.length; i < len; i++){ - if(e.before[i].fn == fn && e.before[i].scope == scope){ - e.before.splice(i, 1); - return; - } - } - for(var i = 0, len = e.after.length; i < len; i++){ - if(e.after[i].fn == fn && e.after[i].scope == scope){ - e.after.splice(i, 1); - return; - } - } - }, - - /** - * Relays selected events from the specified Observable as if the events were fired by this. - * @param {Object} o The Observable whose events this object is to relay. - * @param {Array} events Array of event names to relay. - */ - relayEvents : function(o, events){ - var me = this; - function createHandler(ename){ - return function(){ - return me.fireEvent.apply(me, [ename].concat(Array.prototype.slice.call(arguments, 0))); - }; - } - for(var i = 0, len = events.length; i < len; i++){ - var ename = events[i]; - me.events[ename] = me.events[ename] || true; - o.on(ename, createHandler(ename), me); - } - }, - - /** - *
Enables events fired by this Observable to bubble up an owner hierarchy by calling
- * this.getBubbleTarget()
if present. There is no implementation in the Observable base class.
This is commonly used by Ext.Components to bubble events to owner Containers. See {@link Ext.Component.getBubbleTarget}. The default - * implementation in Ext.Component returns the Component's immediate owner. But if a known target is required, this can be overridden to - * access the required target more quickly.
- *Example:
-Ext.override(Ext.form.Field, {
- // Add functionality to Field's initComponent to enable the change event to bubble
- initComponent : Ext.form.Field.prototype.initComponent.createSequence(function() {
- this.enableBubble('change');
- }),
-
- // We know that we want Field's events to bubble directly to the FormPanel.
- getBubbleTarget : function() {
- if (!this.formPanel) {
- this.formPanel = this.findParentByType('form');
- }
- return this.formPanel;
- }
-});
-
-var myForm = new Ext.formPanel({
- title: 'User Details',
- items: [{
- ...
- }],
- listeners: {
- change: function() {
- // Title goes red if form has been modified.
- myForm.header.setStyle('color', 'red');
- }
- }
-});
-
- * @param {String/Array} events The event name to bubble, or an Array of event names.
- */
- enableBubble : function(events){
- var me = this;
- if(!Ext.isEmpty(events)){
- events = Ext.isArray(events) ? events : Array.prototype.slice.call(arguments, 0);
- for(var i = 0, len = events.length; i < len; i++){
- var ename = events[i];
- ename = ename.toLowerCase();
- var ce = me.events[ename] || true;
- if (typeof ce == 'boolean') {
- ce = new Ext.util.Event(me, ename);
- me.events[ename] = ce;
- }
- ce.bubble = true;
- }
- }
- }
- };
-}());
-
-
-/**
- * Starts capture on the specified Observable. All events will be passed
- * to the supplied function with the event name + standard signature of the event
- * before the event is fired. If the supplied function returns false,
- * the event will not fire.
- * @param {Observable} o The Observable to capture events from.
- * @param {Function} fn The function to call when an event is fired.
- * @param {Object} scope (optional) The scope (this
reference) in which the function is executed. Defaults to the Observable firing the event.
- * @static
- */
-Ext.util.Observable.capture = function(o, fn, scope){
- o.fireEvent = o.fireEvent.createInterceptor(fn, scope);
-};
-
-
-/**
- * Sets observability on the passed class constructor.- *
This makes any event fired on any instance of the passed class also fire a single event through - * the class allowing for central handling of events on many instances at once.
- *Usage:
-Ext.util.Observable.observeClass(Ext.data.Connection);
-Ext.data.Connection.on('beforerequest', function(con, options) {
- console.log('Ajax request made to ' + options.url);
-});
- * @param {Function} c The class constructor to make observable.
- * @param {Object} listeners An object containing a series of listeners to add. See {@link #addListener}.
- * @static
- */
-Ext.util.Observable.observeClass = function(c, listeners){
- if(c){
- if(!c.fireEvent){
- Ext.apply(c, new Ext.util.Observable());
- Ext.util.Observable.capture(c.prototype, c.fireEvent, c);
- }
- if(typeof listeners == 'object'){
- c.on(listeners);
- }
- return c;
- }
-};