-Employee = Ext.extend(Ext.util.Observable, {
- constructor: function(config){
- this.name = config.name;
- this.addEvents({
- "fired" : true,
- "quit" : true
- });
-
- // Copy configured listeners into *this* object so that the base class's
- // constructor will add them.
- this.listeners = config.listeners;
-
- // Call our superclass constructor to complete construction process.
- Employee.superclass.constructor.call(this, config)
- }
-});
-
-var newEmployee = new Employee({
- name: employeeName,
- listeners: {
- quit: function() {
- // By default, "this" will be the object that fired the event.
- alert(this.name + " has quit!");
- }
- }
-});
-A config object containing one or more event handlers to be added to this - * object during initialization. This should be a valid listeners config object as specified in the - * {@link #addListener} example for attaching multiple handlers at once.
- *DOM events from ExtJs {@link Ext.Component Components}
- *While some ExtJs Component classes export selected DOM events (e.g. "click", "mouseover" etc), this
- * is usually only done when extra value can be added. For example the {@link Ext.DataView DataView}'s
- * {@link Ext.DataView#click click} event passing the node clicked on. To access DOM
- * events directly from a Component's HTMLElement, listeners must be added to the {@link Ext.Component#getEl Element} after the Component
- * has been rendered. A plugin can simplify this step:
-// Plugin is configured with a listeners config object.
-// The Component is appended to the argument list of all handler functions.
-Ext.DomObserver = Ext.extend(Object, {
- constructor: function(config) {
- this.listeners = config.listeners ? config.listeners : config;
- },
-
- // Component passes itself into plugin's init method
- init: function(c) {
- var p, l = this.listeners;
- for (p in l) {
- if (Ext.isFunction(l[p])) {
- l[p] = this.createHandler(l[p], c);
- } else {
- l[p].fn = this.createHandler(l[p].fn, c);
- }
- }
-
- // Add the listeners to the Element immediately following the render call
- c.render = c.render.{@link Function#createSequence createSequence}(function() {
- var e = c.getEl();
- if (e) {
- e.on(l);
- }
- });
- },
-
- createHandler: function(fn, c) {
- return function(e) {
- fn.call(this, e, c);
- };
- }
-});
-
-var combo = new Ext.form.ComboBox({
-
- // Collapse combo when its element is clicked on
- plugins: [ new Ext.DomObserver({
- click: function(evt, comp) {
- comp.collapse();
- }
- })],
- store: myStore,
- typeAhead: true,
- mode: 'local',
- triggerAction: 'all'
-});
- * Fires the specified event with the passed parameters (minus the event name).
- *An event may be set to bubble up an Observable parent hierarchy (See {@link Ext.Component#getBubbleTarget}) - * by calling {@link #enableBubble}.
- * @param {String} eventName The name of the event to fire. - * @param {Object...} args Variable number of parameters are passed to handlers. - * @return {Boolean} returns false if any of the handlers return false otherwise it returns true. - */ - fireEvent : function(){ - var a = Array.prototype.slice.call(arguments, 0), - ename = a[0].toLowerCase(), - me = this, - ret = TRUE, - ce = me.events[ename], - cc, - q, - c; - if (me.eventsSuspended === TRUE) { - if (q = me.eventQueue) { - q.push(a); - } - } - else if(typeof ce == 'object') { - if (ce.bubble){ - if(ce.fire.apply(ce, a.slice(1)) === FALSE) { - return FALSE; - } - c = me.getBubbleTarget && me.getBubbleTarget(); - if(c && c.enableBubble) { - cc = c.events[ename]; - if(!cc || typeof cc != 'object' || !cc.bubble) { - c.enableBubble(ename); - } - return c.fireEvent.apply(c, a); - } - } - else { - a.shift(); - ret = ce.fire.apply(ce, a); - } - } - return ret; - }, - - /** - * Appends an event handler to this object. - * @param {String} eventName The name of the event to listen for. - * @param {Function} handler The method the event invokes. - * @param {Object} scope (optional) The scope (this reference) in which the handler function is executed.
- * If omitted, defaults to the object which fired the event.
- * @param {Object} options (optional) An object containing handler configuration.
- * properties. This may contain any of the following properties:this reference) in which the handler function is executed.
- * If omitted, defaults to the object which fired the event.
- * Combining Options
- * Using the options argument, it is possible to combine different types of listeners:
- *
- * A delayed, one-time listener.
- *
-myDataView.on('click', this.onClick, this, {
-single: true,
-delay: 100
-});
- * Attaching multiple handlers in 1 call
- * The method also allows for a single argument to be passed which is a config object containing properties
- * which specify multiple handlers.
- *
- *
-myGridPanel.on({
-'click' : {
- fn: this.onClick,
- scope: this,
- delay: 100
-},
-'mouseover' : {
- fn: this.onMouseOver,
- scope: this
-},
-'mouseout' : {
- fn: this.onMouseOut,
- scope: this
-}
-});
- * Or a shorthand syntax:
- *
-myGridPanel.on({
-'click' : this.onClick,
-'mouseover' : this.onMouseOver,
-'mouseout' : this.onMouseOut,
- scope: this
-});true
- * or the first event name string if multiple event names are being passed as separate parameters.
- * @param {string} Optional. Event name if multiple event names are being passed as separate parameters.
- * Usage:
-this.addEvents('storeloaded', 'storecleared');
-this reference) in which the handler function is executed.
- * If omitted, defaults to the object which fired the event.
- * @param {Object} options (optional) An object containing handler configuration.
- * @method
- */
-OBSERVABLE.on = OBSERVABLE.addListener;
-/**
- * Removes an event handler (shorthand for {@link #removeListener}.)
- * @param {String} eventName The type of event the handler was associated with.
- * @param {Function} handler The handler to remove. This must be a reference to the function passed into the {@link #addListener} call.
- * @param {Object} scope (optional) The scope originally specified for the handler.
- * @method
- */
-OBSERVABLE.un = OBSERVABLE.removeListener;
-
-/**
- * Removes all added captures from the Observable.
- * @param {Observable} o The Observable to release
- * @static
- */
-EXTUTIL.Observable.releaseCapture = function(o){
- o.fireEvent = OBSERVABLE.fireEvent;
-};
-
-function createTargeted(h, o, scope){
- return function(){
- if(o.target == arguments[0]){
- h.apply(scope, Array.prototype.slice.call(arguments, 0));
- }
- };
-};
-
-function createBuffered(h, o, l, scope){
- l.task = new EXTUTIL.DelayedTask();
- return function(){
- l.task.delay(o.buffer, h, scope, Array.prototype.slice.call(arguments, 0));
- };
-};
-
-function createSingle(h, e, fn, scope){
- return function(){
- e.removeListener(fn, scope);
- return h.apply(scope, arguments);
- };
-};
-
-function createDelayed(h, o, l, scope){
- return function(){
- var task = new EXTUTIL.DelayedTask(),
- args = Array.prototype.slice.call(arguments, 0);
- if(!l.tasks) {
- l.tasks = [];
- }
- l.tasks.push(task);
- task.delay(o.delay || 10, function(){
- l.tasks.remove(task);
- h.apply(scope, args);
- }, scope);
- };
-};
-
-EXTUTIL.Event = function(obj, name){
- this.name = name;
- this.obj = obj;
- this.listeners = [];
-};
-
-EXTUTIL.Event.prototype = {
- addListener : function(fn, scope, options){
- var me = this,
- l;
- scope = scope || me.obj;
- if(!me.isListening(fn, scope)){
- l = me.createListener(fn, scope, options);
- if(me.firing){ // if we are currently firing this event, don't disturb the listener loop
- me.listeners = me.listeners.slice(0);
- }
- me.listeners.push(l);
- }
- },
-
- createListener: function(fn, scope, o){
- o = o || {};
- scope = scope || this.obj;
- var l = {
- fn: fn,
- scope: scope,
- options: o
- }, h = fn;
- if(o.target){
- h = createTargeted(h, o, scope);
- }
- if(o.delay){
- h = createDelayed(h, o, l, scope);
- }
- if(o.single){
- h = createSingle(h, this, fn, scope);
- }
- if(o.buffer){
- h = createBuffered(h, o, l, scope);
- }
- l.fireFn = h;
- return l;
- },
-
- findListener : function(fn, scope){
- var list = this.listeners,
- i = list.length,
- l;
-
- scope = scope || this.obj;
- while(i--){
- l = list[i];
- if(l){
- if(l.fn == fn && l.scope == scope){
- return i;
- }
- }
- }
- return -1;
- },
-
- isListening : function(fn, scope){
- return this.findListener(fn, scope) != -1;
- },
-
- removeListener : function(fn, scope){
- var index,
- l,
- k,
- me = this,
- ret = FALSE;
- if((index = me.findListener(fn, scope)) != -1){
- if (me.firing) {
- me.listeners = me.listeners.slice(0);
- }
- l = me.listeners[index];
- if(l.task) {
- l.task.cancel();
- delete l.task;
- }
- k = l.tasks && l.tasks.length;
- if(k) {
- while(k--) {
- l.tasks[k].cancel();
- }
- delete l.tasks;
- }
- me.listeners.splice(index, 1);
- ret = TRUE;
- }
- return ret;
- },
-
- // Iterate to stop any buffered/delayed events
- clearListeners : function(){
- var me = this,
- l = me.listeners,
- i = l.length;
- while(i--) {
- me.removeListener(l[i].fn, l[i].scope);
- }
- },
-
- fire : function(){
- var me = this,
- listeners = me.listeners,
- len = listeners.length,
- i = 0,
- l;
-
- if(len > 0){
- me.firing = TRUE;
- var args = Array.prototype.slice.call(arguments, 0);
- for (; i < len; i++) {
- l = listeners[i];
- if(l && l.fireFn.apply(l.scope || me.obj || window, args) === FALSE) {
- return (me.firing = FALSE);
- }
- }
- }
- me.firing = FALSE;
- return TRUE;
- }
-
-};
-})();