- <div class="body-wrap">
- <div class="top-tools">
- <a class="inner-link" href="#Ext.util.Observable-props"><img src="../resources/images/default/s.gif" class="item-icon icon-prop">Properties</a>
- <a class="inner-link" href="#Ext.util.Observable-methods"><img src="../resources/images/default/s.gif" class="item-icon icon-method">Methods</a>
- <a class="inner-link" href="#Ext.util.Observable-events"><img src="../resources/images/default/s.gif" class="item-icon icon-event">Events</a>
- <a class="inner-link" href="#Ext.util.Observable-configs"><img src="../resources/images/default/s.gif" class="item-icon icon-config">Config Options</a>
- <a class="bookmark" href="../docs/?class=Ext.util.Observable"><img src="../resources/images/default/s.gif" class="item-icon icon-fav">Direct Link</a>
- </div>
- <h1>Class Ext.util.Observable</h1>
- <table cellspacing="0">
- <tr><td class="label">Package:</td><td class="hd-info">Ext.util</td></tr>
- <tr><td class="label">Defined In:</td><td class="hd-info"><a href="../src/Observable.js" target="_blank">Observable.js</a></td></tr>
- <tr><td class="label">Class:</td><td class="hd-info">Observable</td></tr>
- <tr><td class="label">Subclasses:</td><td class="hd-info"><a ext:cls="Ext.Component" href="output/Ext.Component.html">Component</a>, <a ext:cls="Ext.History" href="output/Ext.History.html">History</a>, <a ext:cls="Ext.Resizable" href="output/Ext.Resizable.html">Resizable</a>, <a ext:cls="Ext.SplitBar" href="output/Ext.SplitBar.html">SplitBar</a>, <a ext:cls="Ext.Updater" href="output/Ext.Updater.html">Updater</a>, <a ext:cls="Ext.air.NativeObservable" href="output/Ext.air.NativeObservable.html">NativeObservable</a>, <a ext:cls="Ext.data.Connection" href="output/Ext.data.Connection.html">Connection</a>, <a ext:cls="Ext.data.DataProxy" href="output/Ext.data.DataProxy.html">DataProxy</a>, <a ext:cls="Ext.data.Node" href="output/Ext.data.Node.html">Node</a>, <a ext:cls="Ext.data.Store" href="output/Ext.data.Store.html">Store</a>, <a ext:cls="Ext.data.Tree" href="output/Ext.data.Tree.html">Tree</a>, <a ext:cls="Ext.form.BasicForm" href="output/Ext.form.BasicForm.html">BasicForm</a>, <a ext:cls="Ext.grid.AbstractSelectionModel" href="output/Ext.grid.AbstractSelectionModel.html">AbstractSelectionModel</a>, <a ext:cls="Ext.grid.ColumnModel" href="output/Ext.grid.ColumnModel.html">ColumnModel</a>, <a ext:cls="Ext.grid.GridView" href="output/Ext.grid.GridView.html">GridView</a>, <a ext:cls="Ext.grid.PropertyStore" href="output/Ext.grid.PropertyStore.html">PropertyStore</a>, <a ext:cls="Ext.menu.Menu" href="output/Ext.menu.Menu.html">Menu</a>, <a ext:cls="Ext.tree.DefaultSelectionModel" href="output/Ext.tree.DefaultSelectionModel.html">DefaultSelectionModel</a>, <a ext:cls="Ext.tree.MultiSelectionModel" href="output/Ext.tree.MultiSelectionModel.html">MultiSelectionModel</a>, <a ext:cls="Ext.tree.TreeLoader" href="output/Ext.tree.TreeLoader.html">TreeLoader</a>, <a ext:cls="Ext.util.ClickRepeater" href="output/Ext.util.ClickRepeater.html">ClickRepeater</a>, <a ext:cls="Ext.util.MixedCollection" href="output/Ext.util.MixedCollection.html">MixedCollection</a></td></tr>
- <tr><td class="label">Extends:</td><td class="hd-info">Object</td></tr>
- </table>
- <div class="description">
- *
-Abstract base class that provides a common interface for publishing events. Subclasses are expected to
-to have a property "events" with all the events defined.<br>
+<div class="body-wrap" xmlns:ext="http://www.extjs.com"><div class="top-tools"><a class="inner-link" href="#Ext.util.Observable-props"><img src="resources/images/default/s.gif" class="item-icon icon-prop">Properties</a> <a class="inner-link" href="#Ext.util.Observable-methods"><img src="resources/images/default/s.gif" class="item-icon icon-method">Methods</a> <a class="inner-link" href="#Ext.util.Observable-events"><img src="resources/images/default/s.gif" class="item-icon icon-event">Events</a> <a class="inner-link" href="#Ext.util.Observable-configs"><img src="resources/images/default/s.gif" class="item-icon icon-config">Config Options</a> <a class="bookmark" href="../docs/?class=Ext.util.Observable"><img src="resources/images/default/s.gif" class="item-icon icon-fav">Direct Link</a> </div><h1>Class <a href="source/Observable.html#cls-Ext.util.Observable">Ext.util.Observable</a></h1><table cellspacing="0"><tr><td class="label">Package:</td><td class="hd-info">Ext.util</td></tr><tr><td class="label">Defined In:</td><td class="hd-info"><a href="source/Observable.html#cls-Ext.util.Observable">Observable.js</a></td></tr><tr><td class="label">Class:</td><td class="hd-info"><a href="source/Observable.html#cls-Ext.util.Observable">Observable</a></td></tr><tr><td class="label">Subclasses:</td><td class="hd-info"><a href="output/Ext.Component.html" ext:cls="Ext.Component">Component</a>, <a href="output/Ext.Direct.html" ext:cls="Ext.Direct">Direct</a>, <a href="output/Ext.History.html" ext:cls="Ext.History">History</a>, <a href="output/Ext.Resizable.html" ext:cls="Ext.Resizable">Resizable</a>, <a href="output/Ext.SplitBar.html" ext:cls="Ext.SplitBar">SplitBar</a>, <a href="output/Ext.Updater.html" ext:cls="Ext.Updater">Updater</a>, <a href="output/Ext.data.Connection.html" ext:cls="Ext.data.Connection">Connection</a>, <a href="output/Ext.data.DataProxy.html" ext:cls="Ext.data.DataProxy">DataProxy</a>, <a href="output/Ext.data.Node.html" ext:cls="Ext.data.Node">Node</a>, <a href="output/Ext.data.Store.html" ext:cls="Ext.data.Store">Store</a>, <a href="output/Ext.data.Tree.html" ext:cls="Ext.data.Tree">Tree</a>, <a href="output/Ext.dd.DragTracker.html" ext:cls="Ext.dd.DragTracker">DragTracker</a>, <a href="output/Ext.direct.Provider.html" ext:cls="Ext.direct.Provider">Provider</a>, <a href="output/Ext.form.BasicForm.html" ext:cls="Ext.form.BasicForm">BasicForm</a>, <a href="output/Ext.grid.AbstractSelectionModel.html" ext:cls="Ext.grid.AbstractSelectionModel">AbstractSelectionModel</a>, <a href="output/Ext.grid.ColumnModel.html" ext:cls="Ext.grid.ColumnModel">ColumnModel</a>, <a href="output/Ext.grid.GridView.html" ext:cls="Ext.grid.GridView">GridView</a>, <a href="output/Ext.grid.PropertyStore.html" ext:cls="Ext.grid.PropertyStore">PropertyStore</a>, <a href="output/Ext.list.ColumnResizer.html" ext:cls="Ext.list.ColumnResizer">ColumnResizer</a>, <a href="output/Ext.list.Sorter.html" ext:cls="Ext.list.Sorter">Sorter</a>, <a href="output/Ext.tree.DefaultSelectionModel.html" ext:cls="Ext.tree.DefaultSelectionModel">DefaultSelectionModel</a>, <a href="output/Ext.tree.MultiSelectionModel.html" ext:cls="Ext.tree.MultiSelectionModel">MultiSelectionModel</a>, <a href="output/Ext.tree.TreeLoader.html" ext:cls="Ext.tree.TreeLoader">TreeLoader</a>, <a href="output/Ext.util.ClickRepeater.html" ext:cls="Ext.util.ClickRepeater">ClickRepeater</a>, <a href="output/Ext.util.MixedCollection.html" ext:cls="Ext.util.MixedCollection">MixedCollection</a></td></tr><tr><td class="label">Extends:</td><td class="hd-info">Object</td></tr></table><div class="description">Base class that provides a common interface for publishing events. Subclasses are expected to
+to have a property "events" with all the events defined, and, optionally, a property "listeners"
+with configured listeners defined.<br>
For example:
-<pre><code>Employee = <b>function</b>(name){
- <b>this</b>.name = name;
- <b>this</b>.addEvents({
- <em>"fired"</em> : true,
- <em>"quit"</em> : true
- });
- }
- Ext.extend(Employee, Ext.util.Observable);</code></pre> </div>
-
- <div class="hr"></div>
- <a id="Ext.util.Observable-configs"></a>
- <h2>Config Options</h2>
- <table cellspacing="0" class="member-table">
- <tr>
- <th class="sig-header" colspan="2">Config Options</th>
- <th class="msource-header">Defined By</th>
- </tr>
- <tr class="config-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-listeners"></a>\r
- <b>listeners</b> : Object <div class="mdesc">\r
- <div class="short">(optional) A config object containing one or more event handlers to be added to this object during initialization. Th...</div>\r
- <div class="long">\r
- (optional) 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 <a ext:cls="Ext.util.Observable" ext:member="addListener" href="output/Ext.util.Observable.html#addListener">addListener</a> example for attaching multiple handlers at once. </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- </table>
- <a id="Ext.util.Observable-props"></a>
- <h2>Public Properties</h2>
- <div class="no-members">This class has no public properties.</div> <a id="Ext.util.Observable-methods"></a>
- <h2>Public Methods</h2>
- <table cellspacing="0" class="member-table">
- <tr>
- <th class="sig-header" colspan="2">Method</th>
- <th class="msource-header">Defined By</th>
- </tr>
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-Observable.capture"></a>\r
- <b>Observable.capture</b>( <code>Observable o</code>, <code>Function fn</code>, <span class="optional" title="Optional">[<code>Object scope</code>]</span> ) : void <div class="mdesc">\r
- <div class="short"><static> Starts capture on the specified Observable. All events will be passed
-to the supplied function with th...</div>\r
- <div class="long">\r
- <static> Starts capture on the specified Observable. All events will be passed
+<pre><code>Employee = Ext.extend(Ext.util.Observable, {
+ constructor: <b>function</b>(config){
+ this.name = config.name;
+ this.addEvents({
+ <em>"fired"</em> : true,
+ <em>"quit"</em> : true
+ });
+
+ <i>// Copy configured listeners into *this* object so that the base class's</i>
+ <i>// constructor will add them.</i>
+ this.listeners = config.listeners;
+
+ <i>// Call our superclass constructor to complete construction process.</i>
+ Employee.superclass.constructor.call(this, config)
+ }
+});</code></pre>
+This could then be used like this:<pre><code><b>var</b> newEmployee = <b>new</b> Employee({
+ name: employeeName,
+ listeners: {
+ quit: <b>function</b>() {
+ <i>// By <b>default</b>, <em>"this"</em> will be the object that fired the event.</i>
+ alert(this.name + <em>" has quit!"</em>);
+ }
+ }
+});</code></pre></div><div class="hr"></div><a id="Ext.util.Observable-configs"></a><h2>Config Options</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Config Options</th><th class="msource-header">Defined By</th></tr><tr class="config-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-listeners"></a><b><a href="source/Observable.html#cfg-Ext.util.Observable-listeners">listeners</a></b> : Object<div class="mdesc"><div class="short">A config object containing one or more event handlers to be added to this
+object during initialization. This should ...</div><div class="long"><p>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
+<a href="output/Ext.util.Observable.html#Ext.util.Observable-addListener" ext:member="addListener" ext:cls="Ext.util.Observable">addListener</a> example for attaching multiple handlers at once.</p>
+<br><p><b><u>DOM events from ExtJs <a href="output/Ext.Component.html" ext:cls="Ext.Component">Components</a></u></b></p>
+<br><p>While <i>some</i> 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 <a href="output/Ext.DataView.html" ext:cls="Ext.DataView">DataView</a>'s
+<b><code><a href="output/Ext.DataView.html#Ext.DataView-click" ext:member="click" ext:cls="Ext.DataView">click</a></code></b> event passing the node clicked on. To access DOM
+events directly from a Component's HTMLElement, listeners must be added to the <i><a href="output/Ext.Component.html#Ext.Component-getEl" ext:member="getEl" ext:cls="Ext.Component">Element</a></i> after the Component
+has been rendered. A plugin can simplify this step:<pre><code><i>// Plugin is configured <b>with</b> a listeners config object.</i>
+<i>// The Component is appended to the argument list of all handler functions.</i>
+Ext.DomObserver = Ext.extend(Object, {
+ constructor: <b>function</b>(config) {
+ this.listeners = config.listeners ? config.listeners : config;
+ },
+
+ <i>// Component passes itself into plugin's init method</i>
+ init: <b>function</b>(c) {
+ <b>var</b> p, l = this.listeners;
+ <b>for</b> (p <b>in</b> l) {
+ <b>if</b> (Ext.isFunction(l[p])) {
+ l[p] = this.createHandler(l[p], c);
+ } <b>else</b> {
+ l[p].fn = this.createHandler(l[p].fn, c);
+ }
+ }
+
+ <i>// Add the listeners to the Element immediately following the render call</i>
+ c.render = c.render.<a href="output/Function.html#Function-createSequence" ext:member="createSequence" ext:cls="Function">createSequence</a>(<b>function</b>() {
+ <b>var</b> e = c.getEl();
+ <b>if</b> (e) {
+ e.on(l);
+ }
+ });
+ },
+
+ createHandler: <b>function</b>(fn, c) {
+ <b>return</b> <b>function</b>(e) {
+ fn.call(this, e, c);
+ };
+ }
+});
+
+<b>var</b> combo = <b>new</b> Ext.form.ComboBox({
+
+ <i>// Collapse combo when its element is clicked on</i>
+ plugins: [ <b>new</b> Ext.DomObserver({
+ click: <b>function</b>(evt, comp) {
+ comp.collapse();
+ }
+ })],
+ store: myStore,
+ typeAhead: true,
+ mode: <em>'local'</em>,
+ triggerAction: <em>'all'</em>
+});</code></pre></p></div></div></td><td class="msource">Observable</td></tr></tbody></table><a id="Ext.util.Observable-props"></a><h2>Public Properties</h2><div class="no-members">This class has no public properties.</div><a id="Ext.util.Observable-methods"></a><h2>Public Methods</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Method</th><th class="msource-header">Defined By</th></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-Observable.capture"></a><b><a href="source/Observable-more.html#method-Ext.util.Observable-Observable.capture">Observable.capture</a></b>( <code>Observable o</code>, <code>Function fn</code>, <span title="Optional" class="optional">[<code>Object scope</code>]</span> )
+ :
+ void<div class="mdesc"><div class="short"><static> Starts capture on the specified Observable. All events will be passed
+to the supplied function with the event name + ...</div><div class="long"><static> Starts capture on the specified Observable. All events will be passed
to the supplied function with the event name + standard signature of the event
<b>before</b> the event is fired. If the supplied function returns false,
-the event will not fire. <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>o</code> : Observable<div class="sub-desc">The Observable to capture</div></li><li><code>fn</code> : Function<div class="sub-desc">The function to call</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (this object) for the fn</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row alt expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-Observable.releaseCapture"></a>\r
- <b>Observable.releaseCapture</b>( <code>Observable o</code> ) : void <div class="mdesc">\r
- <div class="short"><static> Removes <b>all</b> added captures from the Observable.</div>\r
- <div class="long">\r
- <static> Removes <b>all</b> added captures from the Observable. <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>o</code> : Observable<div class="sub-desc">The Observable to release</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-addEvents"></a>\r
- <b>addEvents</b>( <code>Object object</code> ) : void <div class="mdesc">\r
- <div class="short">Used to define events on this Observable</div>\r
- <div class="long">\r
- Used to define events on this Observable <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>object</code> : Object<div class="sub-desc">The object with the events defined</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row alt expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-addListener"></a>\r
- <b>addListener</b>( <code>String eventName</code>, <code>Function handler</code>, <span class="optional" title="Optional">[<code>Object scope</code>]</span>, <span class="optional" title="Optional">[<code>Object options</code>]</span> ) : void <div class="mdesc">\r
- <div class="short">Appends an event handler to this component</div>\r
- <div class="long">\r
- Appends an event handler to this component <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>eventName</code> : String<div class="sub-desc">The type of event to listen for</div></li><li><code>handler</code> : Function<div class="sub-desc">The method the event invokes</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope in which to execute the handler
-function. The handler function's "this" context.</div></li><li><code>options</code> : Object<div class="sub-desc">(optional) An object containing handler configuration
+the event will not fire.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>o</code> : Observable<div class="sub-desc">The Observable to capture events from.</div></li><li><code>fn</code> : Function<div class="sub-desc">The function to call when an event is fired.</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code>this</code> reference) in which the function is executed. Defaults to the Observable firing the event.</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-Observable.observeClass"></a><b><a href="source/Observable-more.html#method-Ext.util.Observable-Observable.observeClass">Observable.observeClass</a></b>( <code>Function c</code>, <code>Object listeners</code> )
+ :
+ void<div class="mdesc"><div class="short"><static> Sets observability on the passed class constructor.
+This makes any event fired on any instance of the passed class al...</div><div class="long"><static> Sets observability on the passed class constructor.<p>
+<p>This makes any event fired on any instance of the passed class also fire a single event through
+the <i>class</i> allowing for central handling of events on many instances at once.</p>
+<p>Usage:</p><pre><code>Ext.util.Observable.observeClass(Ext.data.Connection);
+Ext.data.Connection.on(<em>'beforerequest'</em>, <b>function</b>(con, options) {
+ console.log(<em>'Ajax request made to '</em> + options.url);
+});</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>c</code> : Function<div class="sub-desc">The class constructor to make observable.</div></li><li><code>listeners</code> : Object<div class="sub-desc">An object containing a series of listeners to add. See <a href="output/Ext.util.Observable.html#Ext.util.Observable-addListener" ext:member="addListener" ext:cls="Ext.util.Observable">addListener</a>.</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-Observable.releaseCapture"></a><b><a href="source/Observable.html#method-Ext.util.Observable-Observable.releaseCapture">Observable.releaseCapture</a></b>( <code>Observable o</code> )
+ :
+ void<div class="mdesc"><div class="short"><static> Removes all added captures from the Observable.</div><div class="long"><static> Removes <b>all</b> added captures from the Observable.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>o</code> : Observable<div class="sub-desc">The Observable to release</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-addEvents"></a><b><a href="source/Observable.html#method-Ext.util.Observable-addEvents">addEvents</a></b>( <code>Object|String o</code>, <code>string Optional.</code> )
+ :
+ void<div class="mdesc"><div class="short">Adds the specified events to the list of events which this Observable may fire.</div><div class="long">Adds the specified events to the list of events which this Observable may fire.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>o</code> : Object|String<div class="sub-desc">Either an object with event names as properties with a value of <code>true</code>
+or the first event name string if multiple event names are being passed as separate parameters.</div></li><li><code>Optional.</code> : string<div class="sub-desc">Event name if multiple event names are being passed as separate parameters.
+Usage:<pre><code>this.addEvents(<em>'storeloaded'</em>, <em>'storecleared'</em>);</code></pre></div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-addListener"></a><b><a href="source/Observable.html#method-Ext.util.Observable-addListener">addListener</a></b>( <code>String eventName</code>, <code>Function handler</code>, <span title="Optional" class="optional">[<code>Object scope</code>]</span>, <span title="Optional" class="optional">[<code>Object options</code>]</span> )
+ :
+ void<div class="mdesc"><div class="short">Appends an event handler to this object.</div><div class="long">Appends an event handler to this object.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>eventName</code> : String<div class="sub-desc">The name of the event to listen for.</div></li><li><code>handler</code> : Function<div class="sub-desc">The method the event invokes.</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the handler function is executed.
+<b>If omitted, defaults to the object which fired the event.</b></div></li><li><code>options</code> : Object<div class="sub-desc">(optional) An object containing handler configuration.
properties. This may contain any of the following properties:<ul>
-<li><b>scope</b> : Object<p class="sub-desc">The scope in which to execute the handler function. The handler function's "this" context.</p></li>
-<li><b>delay</b> : Number<p class="sub-desc">The number of milliseconds to delay the invocation of the handler after the event fires.</p></li>
-<li><b>single</b> : Boolean<p class="sub-desc">True to add a handler to handle just the next firing of the event, and then remove itself.</p></li>
-<li><b>buffer</b> : Number<p class="sub-desc">Causes the handler to be scheduled to run in an <a ext:cls="Ext.util.DelayedTask" href="output/Ext.util.DelayedTask.html">Ext.util.DelayedTask</a> delayed
+<li><b>scope</b> : Object<div class="sub-desc">The scope (<code><b>this</b></code> reference) in which the handler function is executed.
+<b>If omitted, defaults to the object which fired the event.</b></div></li>
+<li><b>delay</b> : Number<div class="sub-desc">The number of milliseconds to delay the invocation of the handler after the event fires.</div></li>
+<li><b>single</b> : Boolean<div class="sub-desc">True to add a handler to handle just the next firing of the event, and then remove itself.</div></li>
+<li><b>buffer</b> : Number<div class="sub-desc">Causes the handler to be scheduled to run in an <a href="output/Ext.util.DelayedTask.html" ext:cls="Ext.util.DelayedTask">Ext.util.DelayedTask</a> delayed
by the specified number of milliseconds. If the event fires again within that time, the original
-handler is <em>not</em> invoked, but the new handler is scheduled in its place.</p></li>
+handler is <em>not</em> invoked, but the new handler is scheduled in its place.</div></li>
+<li><b>target</b> : Observable<div class="sub-desc">Only call the handler if the event was fired on the target Observable, <i>not</i>
+if the event was bubbled up from a child Observable.</div></li>
</ul><br>
<p>
<b>Combining Options</b><br>
Using the options argument, it is possible to combine different types of listeners:<br>
<br>
-A normalized, delayed, one-time listener that auto stops the event and passes a custom argument (forumId)
-<pre><code>el.on(<em>'click'</em>, <b>this</b>.onClick, <b>this</b>, {
- single: true,
- delay: 100,
- forumId: 4
+A delayed, one-time listener.
+<pre><code>myDataView.on(<em>'click'</em>, this.onClick, this, {
+single: true,
+delay: 100
});</code></pre>
<p>
<b>Attaching multiple handlers in 1 call</b><br>
The method also allows for a single argument to be passed which is a config object containing properties
which specify multiple handlers.
<p>
-<pre><code>foo.on({
- <em>'click'</em> : {
- fn: <b>this</b>.onClick,
- scope: <b>this</b>,
- delay: 100
- },
- <em>'mouseover'</em> : {
- fn: <b>this</b>.onMouseOver,
- scope: <b>this</b>
- },
- <em>'mouseout'</em> : {
- fn: <b>this</b>.onMouseOut,
- scope: <b>this</b>
- }
+<pre><code>myGridPanel.on({
+<em>'click'</em> : {
+ fn: this.onClick,
+ scope: this,
+ delay: 100
+},
+<em>'mouseover'</em> : {
+ fn: this.onMouseOver,
+ scope: this
+},
+<em>'mouseout'</em> : {
+ fn: this.onMouseOut,
+ scope: this
+}
});</code></pre>
<p>
Or a shorthand syntax:<br>
-<pre><code>foo.on({
- <em>'click'</em> : <b>this</b>.onClick,
- <em>'mouseover'</em> : <b>this</b>.onMouseOver,
- <em>'mouseout'</em> : <b>this</b>.onMouseOut,
- scope: <b>this</b>
-});</code></pre></div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-fireEvent"></a>\r
- <b>fireEvent</b>( <code>String eventName</code>, <code>Object... args</code> ) : Boolean <div class="mdesc">\r
- <div class="short">Fires the specified event with the passed parameters (minus the event name).</div>\r
- <div class="long">\r
- Fires the specified event with the passed parameters (minus the event name). <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>eventName</code> : String<div class="sub-desc"></div></li><li><code>args</code> : Object...<div class="sub-desc">Variable number of parameters are passed to handlers</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>Boolean</code><div class="sub-desc">returns false if any of the handlers return false otherwise it returns true</div></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row alt expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-hasListener"></a>\r
- <b>hasListener</b>( <code>String eventName</code> ) : Boolean <div class="mdesc">\r
- <div class="short">Checks to see if this object has any listeners for a specified event</div>\r
- <div class="long">\r
- Checks to see if this object has any listeners for a specified event <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>eventName</code> : String<div class="sub-desc">The name of the event to check for</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>Boolean</code><div class="sub-desc">True if the event is being listened for, else false</div></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-on"></a>\r
- <b>on</b>( <code>String eventName</code>, <code>Function handler</code>, <span class="optional" title="Optional">[<code>Object scope</code>]</span>, <span class="optional" title="Optional">[<code>Object options</code>]</span> ) : void <div class="mdesc">\r
- <div class="short">Appends an event handler to this element (shorthand for addListener)</div>\r
- <div class="long">\r
- Appends an event handler to this element (shorthand for addListener) <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>eventName</code> : String<div class="sub-desc">The type of event to listen for</div></li><li><code>handler</code> : Function<div class="sub-desc">The method the event invokes</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope in which to execute the handler
-function. The handler function's "this" context.</div></li><li><code>options</code> : Object<div class="sub-desc">(optional)</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row alt expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-purgeListeners"></a>\r
- <b>purgeListeners</b>() : void <div class="mdesc">\r
- <div class="short">Removes all listeners for this object</div>\r
- <div class="long">\r
- Removes all listeners for this object <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li>None.</li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-relayEvents"></a>\r
- <b>relayEvents</b>( <code>Object o</code>, <code>Array events</code> ) : void <div class="mdesc">\r
- <div class="short">Relays selected events from the specified Observable as if the events were fired by <tt><b>this</b></tt>.</div>\r
- <div class="long">\r
- Relays selected events from the specified Observable as if the events were fired by <tt><b>this</b></tt>. <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>o</code> : Object<div class="sub-desc">The Observable whose events this object is to relay.</div></li><li><code>events</code> : Array<div class="sub-desc">Array of event names to relay.</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row alt expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-removeListener"></a>\r
- <b>removeListener</b>( <code>String eventName</code>, <code>Function handler</code>, <span class="optional" title="Optional">[<code>Object scope</code>]</span> ) : void <div class="mdesc">\r
- <div class="short">Removes a listener</div>\r
- <div class="long">\r
- Removes a listener <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>eventName</code> : String<div class="sub-desc">The type of event to listen for</div></li><li><code>handler</code> : Function<div class="sub-desc">The handler to remove</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (this object) for the handler</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-resumeEvents"></a>\r
- <b>resumeEvents</b>() : void <div class="mdesc">\r
- <div class="short">Resume firing events. (see <a ext:cls="Ext.util.Observable" ext:member="suspendEvents" href="output/Ext.util.Observable.html#suspendEvents">suspendEvents</a>)</div>\r
- <div class="long">\r
- Resume firing events. (see <a ext:cls="Ext.util.Observable" ext:member="suspendEvents" href="output/Ext.util.Observable.html#suspendEvents">suspendEvents</a>) <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li>None.</li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row alt expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-suspendEvents"></a>\r
- <b>suspendEvents</b>() : void <div class="mdesc">\r
- <div class="short">Suspend the firing of all events. (see <a ext:cls="Ext.util.Observable" ext:member="resumeEvents" href="output/Ext.util.Observable.html#resumeEvents">resumeEvents</a>)</div>\r
- <div class="long">\r
- Suspend the firing of all events. (see <a ext:cls="Ext.util.Observable" ext:member="resumeEvents" href="output/Ext.util.Observable.html#resumeEvents">resumeEvents</a>) <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li>None.</li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Ext.util.Observable-un"></a>\r
- <b>un</b>( <code>String eventName</code>, <code>Function handler</code>, <span class="optional" title="Optional">[<code>Object scope</code>]</span> ) : void <div class="mdesc">\r
- <div class="short">Removes a listener (shorthand for removeListener)</div>\r
- <div class="long">\r
- Removes a listener (shorthand for removeListener) <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>eventName</code> : String<div class="sub-desc">The type of event to listen for</div></li><li><code>handler</code> : Function<div class="sub-desc">The handler to remove</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (this object) for the handler</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>void</code></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Observable</td>\r
- </tr>\r
- </table>
- <a id="Ext.util.Observable-events"></a>
- <h2>Public Events</h2>
- <div class="no-members">This class has no public events.</div>
- </div>
\ No newline at end of file
+<pre><code>myGridPanel.on({
+<em>'click'</em> : this.onClick,
+<em>'mouseover'</em> : this.onMouseOver,
+<em>'mouseout'</em> : this.onMouseOut,
+ scope: this
+});</code></pre></div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-enableBubble"></a><b><a href="source/Observable-more.html#method-Ext.util.Observable-enableBubble">enableBubble</a></b>( <code>String/Array events</code> )
+ :
+ void<div class="mdesc"><div class="short">Enables events fired by this Observable to bubble up an owner hierarchy by calling
+this.getBubbleTarget() if present....</div><div class="long"><p>Enables events fired by this Observable to bubble up an owner hierarchy by calling
+<code>this.getBubbleTarget()</code> if present. There is no implementation in the Observable base class.</p>
+<p>This is commonly used by Ext.Components to bubble events to owner Containers. See <a href="output/Ext.Component.getBubbleTarget.html" ext:cls="Ext.Component.getBubbleTarget">Ext.Component.getBubbleTarget</a>. 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.</p>
+<p>Example:</p><pre><code>Ext.override(Ext.form.Field, {
+ <i>// Add functionality to Field's initComponent to enable the change event to bubble</i>
+ initComponent : Ext.form.Field.prototype.initComponent.createSequence(<b>function</b>() {
+ this.enableBubble(<em>'change'</em>);
+ }),
+
+ <i>// We know that we want Field's events to bubble directly to the FormPanel.</i>
+ getBubbleTarget : <b>function</b>() {
+ <b>if</b> (!this.formPanel) {
+ this.formPanel = this.findParentByType(<em>'form'</em>);
+ }
+ <b>return</b> this.formPanel;
+ }
+});
+
+<b>var</b> myForm = <b>new</b> Ext.formPanel({
+ title: <em>'User Details'</em>,
+ items: [{
+ ...
+ }],
+ listeners: {
+ change: <b>function</b>() {
+ <i>// Title goes red <b>if</b> form has been modified.</i>
+ myForm.header.setStyle(<em>'color'</em>, <em>'red'</em>);
+ }
+ }
+});</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>events</code> : String/Array<div class="sub-desc">The event name to bubble, or an Array of event names.</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-fireEvent"></a><b><a href="source/Observable.html#method-Ext.util.Observable-fireEvent">fireEvent</a></b>( <code>String eventName</code>, <code>Object... args</code> )
+ :
+ Boolean<div class="mdesc"><div class="short">Fires the specified event with the passed parameters (minus the event name).
+An event may be set to bubble up an Obse...</div><div class="long"><p>Fires the specified event with the passed parameters (minus the event name).</p>
+<p>An event may be set to bubble up an Observable parent hierarchy (See <a href="output/Ext.Component.html#Ext.Component-getBubbleTarget" ext:member="getBubbleTarget" ext:cls="Ext.Component">Ext.Component.getBubbleTarget</a>)
+by calling <a href="output/Ext.util.Observable.html#Ext.util.Observable-enableBubble" ext:member="enableBubble" ext:cls="Ext.util.Observable">enableBubble</a>.</p><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>eventName</code> : String<div class="sub-desc">The name of the event to fire.</div></li><li><code>args</code> : Object...<div class="sub-desc">Variable number of parameters are passed to handlers.</div></li></ul><strong>Returns:</strong><ul><li><code>Boolean</code><div class="sub-desc">returns false if any of the handlers return false otherwise it returns true.</div></li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-hasListener"></a><b><a href="source/Observable.html#method-Ext.util.Observable-hasListener">hasListener</a></b>( <code>String eventName</code> )
+ :
+ Boolean<div class="mdesc"><div class="short">Checks to see if this object has any listeners for a specified event</div><div class="long">Checks to see if this object has any listeners for a specified event<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>eventName</code> : String<div class="sub-desc">The name of the event to check for</div></li></ul><strong>Returns:</strong><ul><li><code>Boolean</code><div class="sub-desc">True if the event is being listened for, else false</div></li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-on"></a><b><a href="source/Observable.html#method-Ext.util.Observable-on">on</a></b>( <code>String eventName</code>, <code>Function handler</code>, <span title="Optional" class="optional">[<code>Object scope</code>]</span>, <span title="Optional" class="optional">[<code>Object options</code>]</span> )
+ :
+ void<div class="mdesc"><div class="short">Appends an event handler to this object (shorthand for addListener.)</div><div class="long">Appends an event handler to this object (shorthand for <a href="output/Ext.util.Observable.html#Ext.util.Observable-addListener" ext:member="addListener" ext:cls="Ext.util.Observable">addListener</a>.)<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>eventName</code> : String<div class="sub-desc">The type of event to listen for</div></li><li><code>handler</code> : Function<div class="sub-desc">The method the event invokes</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the handler function is executed.
+<b>If omitted, defaults to the object which fired the event.</b></div></li><li><code>options</code> : Object<div class="sub-desc">(optional) An object containing handler configuration.</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-purgeListeners"></a><b><a href="source/Observable.html#method-Ext.util.Observable-purgeListeners">purgeListeners</a></b>()
+ :
+ void<div class="mdesc"><div class="short">Removes all listeners for this object</div><div class="long">Removes all listeners for this object<div class="mdetail-params"><strong>Parameters:</strong><ul><li>None.</li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-relayEvents"></a><b><a href="source/Observable-more.html#method-Ext.util.Observable-relayEvents">relayEvents</a></b>( <code>Object o</code>, <code>Array events</code> )
+ :
+ void<div class="mdesc"><div class="short">Relays selected events from the specified Observable as if the events were fired by this.</div><div class="long">Relays selected events from the specified Observable as if the events were fired by <tt><b>this</b></tt>.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>o</code> : Object<div class="sub-desc">The Observable whose events this object is to relay.</div></li><li><code>events</code> : Array<div class="sub-desc">Array of event names to relay.</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-removeListener"></a><b><a href="source/Observable.html#method-Ext.util.Observable-removeListener">removeListener</a></b>( <code>String eventName</code>, <code>Function handler</code>, <span title="Optional" class="optional">[<code>Object scope</code>]</span> )
+ :
+ void<div class="mdesc"><div class="short">Removes an event handler.</div><div class="long">Removes an event handler.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>eventName</code> : String<div class="sub-desc">The type of event the handler was associated with.</div></li><li><code>handler</code> : Function<div class="sub-desc">The handler to remove. <b>This must be a reference to the function passed into the <a href="output/Ext.util.Observable.html#Ext.util.Observable-addListener" ext:member="addListener" ext:cls="Ext.util.Observable">addListener</a> call.</b></div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope originally specified for the handler.</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-resumeEvents"></a><b><a href="source/Observable.html#method-Ext.util.Observable-resumeEvents">resumeEvents</a></b>()
+ :
+ void<div class="mdesc"><div class="short">Resume firing events. (see suspendEvents)
+If events were suspended using the queueSuspended parameter, then all
+event...</div><div class="long">Resume firing events. (see <a href="output/Ext.util.Observable.html#Ext.util.Observable-suspendEvents" ext:member="suspendEvents" ext:cls="Ext.util.Observable">suspendEvents</a>)
+If events were suspended using the <tt><b>queueSuspended</b></tt> parameter, then all
+events fired during event suspension will be sent to any listeners now.<div class="mdetail-params"><strong>Parameters:</strong><ul><li>None.</li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-suspendEvents"></a><b><a href="source/Observable.html#method-Ext.util.Observable-suspendEvents">suspendEvents</a></b>( <code>Boolean queueSuspended</code> )
+ :
+ void<div class="mdesc"><div class="short">Suspend the firing of all events. (see resumeEvents)</div><div class="long">Suspend the firing of all events. (see <a href="output/Ext.util.Observable.html#Ext.util.Observable-resumeEvents" ext:member="resumeEvents" ext:cls="Ext.util.Observable">resumeEvents</a>)<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>queueSuspended</code> : Boolean<div class="sub-desc">Pass as true to queue up suspended events to be fired
+after the <a href="output/Ext.util.Observable.html#Ext.util.Observable-resumeEvents" ext:member="resumeEvents" ext:cls="Ext.util.Observable">resumeEvents</a> call instead of discarding all suspended events;</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-un"></a><b><a href="source/Observable.html#method-Ext.util.Observable-un">un</a></b>( <code>String eventName</code>, <code>Function handler</code>, <span title="Optional" class="optional">[<code>Object scope</code>]</span> )
+ :
+ void<div class="mdesc"><div class="short">Removes an event handler (shorthand for removeListener.)</div><div class="long">Removes an event handler (shorthand for <a href="output/Ext.util.Observable.html#Ext.util.Observable-removeListener" ext:member="removeListener" ext:cls="Ext.util.Observable">removeListener</a>.)<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>eventName</code> : String<div class="sub-desc">The type of event the handler was associated with.</div></li><li><code>handler</code> : Function<div class="sub-desc">The handler to remove. <b>This must be a reference to the function passed into the <a href="output/Ext.util.Observable.html#Ext.util.Observable-addListener" ext:member="addListener" ext:cls="Ext.util.Observable">addListener</a> call.</b></div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope originally specified for the handler.</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">Observable</td></tr></tbody></table><a id="Ext.util.Observable-events"></a><h2>Public Events</h2><div class="no-members">This class has no public events.</div></div>
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