+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(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 = TOARRAY(arguments), + ename = toLower(a[0]), + me = this, + ret = TRUE, + ce = me.events[ename], + q, + c; + if (me.eventsSuspended === TRUE) { + if (q = me.suspendedEventsQueue) { + q.push(a); + } + } + else if(ISOBJECT(ce) && ce.bubble){ + if(ce.fire.apply(ce, a.slice(1)) === FALSE) { + return FALSE; + } + c = me.getBubbleTarget && me.getBubbleTarget(); + if(c && c.enableBubble) { + c.enableBubble(ename); + return c.fireEvent.apply(c, a); + } + } + else { + if (ISOBJECT(ce)) { + 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
+});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, TOARRAY(arguments));
+ }
+ };
+};
+
+function createBuffered(h, o, scope){
+ var task = new EXTUTIL.DelayedTask();
+ return function(){
+ task.delay(o.buffer, h, scope, TOARRAY(arguments));
+ };
+}
+
+function createSingle(h, e, fn, scope){
+ return function(){
+ e.removeListener(fn, scope);
+ return h.apply(scope, arguments);
+ };
+}
+
+function createDelayed(h, o, scope){
+ return function(){
+ var args = TOARRAY(arguments);
+ (function(){
+ h.apply(scope, args);
+ }).defer(o.delay || 10);
+ };
+};
+
+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, scope);
+ }
+ if(o.single){
+ h = createSingle(h, this, fn, scope);
+ }
+ if(o.buffer){
+ h = createBuffered(h, o, scope);
+ }
+ l.fireFn = h;
+ return l;
+ },
+
+ findListener : function(fn, scope){
+ var s, ret = -1;
+ EACH(this.listeners, function(l, i) {
+ s = l.scope;
+ if(l.fn == fn && (s == scope || s == this.obj)){
+ ret = i;
+ return FALSE;
+ }
+ },
+ this);
+ return ret;
+ },
+
+ isListening : function(fn, scope){
+ return this.findListener(fn, scope) != -1;
+ },
+
+ removeListener : function(fn, scope){
+ var index,
+ me = this,
+ ret = FALSE;
+ if((index = me.findListener(fn, scope)) != -1){
+ if (me.firing) {
+ me.listeners = me.listeners.slice(0);
+ }
+ me.listeners.splice(index, 1);
+ ret = TRUE;
+ }
+ return ret;
+ },
+
+ clearListeners : function(){
+ this.listeners = [];
+ },
+
+ fire : function(){
+ var me = this,
+ args = TOARRAY(arguments),
+ ret = TRUE;
+
+ EACH(me.listeners, function(l) {
+ me.firing = TRUE;
+ if (l.fireFn.apply(l.scope || me.obj || window, args) === FALSE) {
+ return ret = me.firing = FALSE;
+ }
+ });
+ me.firing = FALSE;
+ return ret;
+ }
+};
+})();
\ No newline at end of file