bieventtarget.html

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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"><html><!--Generated using api.website.xsl version 2003-07-17--><head><META http-equiv="Content-Type" content="text/html; charset=utf-8"><title>BiEventTarget</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><link type="text/css" rel="stylesheet" href="api.css"><script type="text/javascript">				function showDerivedClasses() {					var ul = document.getElementById("api-derived-classes");					var lis = ul.childNodes;					var l = lis.length;					for (var i = 1; i < l; i++)						lis[i].style.display = "";					lis[0].style.display = "none";				}			</script></head><body><h1 id="BiEventTarget">BiEventTarget</h1><p>This class provides the functionality to add and remove event listeners as well as dispatch events. When an event is dispatched the listeners are notified.</p><p>This class extends		<code><a href="BiObject.html">BiObject</a></code>		and therefore all methods and fields available for		<code><a href="BiObject.html">BiObject</a></code>		are also available for <code>BiEventTarget</code>.</p><ul class="partial-class-tree"><li><code><a href="BiObject.html">BiObject</a></code><ul><li><code>BiEventTarget</code><ul id="api-derived-classes"><li><code><a href="javascript:showDerivedClasses()">Show derived classes</a></code></li><li style="display:none"><code><a href="BiApplication.html">BiApplication</a></code></li><li style="display:none"><code><a href="BiAttachedComponentModel.html">BiAttachedComponentModel</a></code></li><li style="display:none"><code><a href="BiCommand.html">BiCommand</a></code></li><li style="display:none"><code><a href="BiComponent.html">BiComponent</a></code></li><li style="display:none"><code><a href="BiDataSet.html">BiDataSet</a></code></li><li style="display:none"><code><a href="BiImagePreloader.html">BiImagePreloader</a></code></li><li style="display:none"><code><a href="BiMenu.html">BiMenu</a></code></li><li style="display:none"><code><a href="BiMenuItem.html">BiMenuItem</a></code></li><li style="display:none"><code><a href="BiOlapGridDataModel.html">BiOlapGridDataModel</a></code></li><li style="display:none"><code><a href="BiOlapGridStateManager.html">BiOlapGridStateManager</a></code></li><li style="display:none"><code><a href="BiRadioGroup.html">BiRadioGroup</a></code></li><li style="display:none"><code><a href="BiRangeModel.html">BiRangeModel</a></code></li><li style="display:none"><code><a href="BiResourceLoader.html">BiResourceLoader</a></code></li><li style="display:none"><code><a href="BiScriptLoaderQueue.html">BiScriptLoaderQueue</a></code></li><li style="display:none"><code><a href="BiSelectionModel.html">BiSelectionModel</a></code></li><li style="display:none"><code><a href="BiStringBundle.html">BiStringBundle</a></code></li><li style="display:none"><code><a href="BiTextLoader.html">BiTextLoader</a></code></li><li style="display:none"><code><a href="BiThemeManager.html">BiThemeManager</a></code></li><li style="display:none"><code><a href="BiTimer.html">BiTimer</a></code></li><li style="display:none"><code><a href="BiTreeViewDataModel.html">BiTreeViewDataModel</a></code></li><li style="display:none"><code><a href="BiTreeViewStateManager.html">BiTreeViewStateManager</a></code></li><li style="display:none"><code><a href="BiWebService2.html">BiWebService2</a></code></li><li style="display:none"><code><a href="BiXmlRpc.html">BiXmlRpc</a></code></li></ul></li></ul></li></ul><h2>Constructor</h2><p><code>	new BiEventTarget()</code></p><h3>Parameters</h3><p>No parameters.</p><h2>Properties</h2><p>None.</p><h2>Methods</h2><table><thead><tr><td>Name</td><td>Description</td></tr></thead><tbody><tr><td><code><a href="#addEventListener">addEventListener</a></code></td><td>This method adds a function object to call when the event with the given name is dispatched. In case an object is passed as the third argument then that will be used as <code>this</code> and the function will be treated as a method of that object.</td></tr><tr><td><code><a href="#dispatchEvent">dispatchEvent</a></code></td><td>This method dispatches an event and all the listeners will get notified in the same order that they were added. This returns false if any of the listeners called <code><a href="BiEvent.html#preventDefault">preventDefault()</a></code> on the event object.</td></tr><tr><td><code><a href="#removeEventListener">removeEventListener</a></code></td><td>This method removes a previously added event handler function. Note that the same function and object that was used when adding the listener must be passed as the second and third argument.</td></tr><tr><td><code><a href="#setAttribute">setAttribute</a></code></td><td>This overrides the method to map attributes that starts with 'on' to event listeners. For example calling <code>setAttribute("onclick", "alert(event)")</code> will add a click listener with <code>function (event) { alert(event) }</code> as the handler function.</td></tr></tbody></table><h2>Events</h2><p>None.</p><h2>Static Methods</h2><p>None.</p><h2>Static Fields</h2><p>None.</p><h2>Remarks</h2><p>		<code> 			function eventHandler(oEvent) { ... };<br>			             eventTarget.addEventListener("eventtype", eventHandler);<br>						<br>			             function SomeClass() {<br>			             ...<br>			              someObject.addEventListener("eventtype", this.handleEvent, this);<br>			             }<br>					</code>		<br>		             The argument <code>oEvent</code> to the event handler is the same event object that was             created in the <code><a href="#dispatchEvent">dispatchEvent</a></code> above. Inside the event handler             function <code>this</code> will point to the object that dispatched the             event (unless a third argument was provided).</p><h2>Method Details</h2><h3><a name="addEventListener"></a>addEventListener</h3><p>This method adds a function object to call when the event with the given name is dispatched. In case an object is passed as the third argument then that will be used as <code>this</code> and the function will be treated as a method of that object.</p><h4>Syntax</h4><pre class="method-syntax">object.addEventListener(<span class="methodArgument">sType</span>, <span class="methodArgument">fHandler</span> [, <span class="methodArgument">oObject</span>])</pre><h4>Parameters</h4><table><thead><tr><td>Name</td><td>Type</td><td class="optional-header">Optional</td><td>Default</td><td>Descripton</td></tr></thead><tbody><tr><td><code>sType</code></td><td><code class="type">String</code></td><td class="optional-column"></td><td></td><td>The event type (name)</td></tr><tr><td><code>fHandler</code></td><td><code class="type">Function</code></td><td class="optional-column"></td><td></td><td>The function to call</td></tr><tr><td><code>oObject</code></td><td><code class="type">Object</code></td><td class="optional-column"><img src="check.png" alt="checked"></td><td></td><td>Optional object that the function is a method of. 							This is used to map <code>this</code> in the                             function handling the event</td></tr></tbody></table><h4>Return Type</h4><p><code class="type">void</code></p><h3><a name="dispatchEvent"></a>dispatchEvent</h3><p>This method dispatches an event and all the listeners will get notified in the same order that they were added. This returns false if any of the listeners called <code><a href="BiEvent.html#preventDefault">preventDefault()</a></code> on the event object.</p><h4>Syntax</h4><pre class="method-syntax">object.dispatchEvent(<span class="methodArgument">oEvent</span>)</pre><h4>Parameters</h4><table><thead><tr><td>Name</td><td>Type</td><td class="optional-header">Optional</td><td>Default</td><td>Descripton</td></tr></thead><tbody><tr><td><code>oEvent</code></td><td><code class="type">						<code><a href="BiEvent.html">BiEvent</a></code>					</code></td><td class="optional-column"></td><td></td><td>The event object to use in the event</td></tr></tbody></table><h4>Return Type</h4><p><code class="type">Boolean</code></p><h3><a name="removeEventListener"></a>removeEventListener</h3><p>This method removes a previously added event handler function. Note that the same function and object that was used when adding the listener must be passed as the second and third argument.</p><h4>Syntax</h4><pre class="method-syntax">object.removeEventListener(<span class="methodArgument">sType</span>, <span class="methodArgument">fHandler</span> [, <span class="methodArgument">oObject</span>])</pre><h4>Parameters</h4><table><thead><tr><td>Name</td><td>Type</td><td class="optional-header">Optional</td><td>Default</td><td>Descripton</td></tr></thead><tbody><tr><td><code>sType</code></td><td><code class="type">String</code></td><td class="optional-column"></td><td></td><td>The event type (name)</td></tr><tr><td><code>fHandler</code></td><td><code class="type">Function</code></td><td class="optional-column"></td><td></td><td>The function/handler to remove</td></tr><tr><td><code>oObject</code></td><td><code class="type">Object</code></td><td class="optional-column"><img src="check.png" alt="checked"></td><td></td><td>Optional object that the function is a method of.</td></tr></tbody></table><h4>Return Type</h4><p><code class="type">void</code></p><h3><a name="setAttribute"></a>setAttribute</h3><p>This overrides the method to map attributes that starts with 'on' to event listeners. For example calling <code>setAttribute("onclick", "alert(event)")</code> will add a click listener with <code>function (event) { alert(event) }</code> as the handler function.</p><h4>Syntax</h4><pre class="method-syntax">object.setAttribute(<span class="methodArgument">sName</span>, <span class="methodArgument">sValue</span> [, <span class="methodArgument">oParser</span>])</pre><h4>Parameters</h4><table><thead><tr><td>Name</td><td>Type</td><td class="optional-header">Optional</td><td>Default</td><td>Descripton</td></tr></thead><tbody><tr><td><code>sName</code></td><td><code class="type">String</code></td><td class="optional-column"></td><td></td><td>The attribute name</td></tr><tr><td><code>sValue</code></td><td><code class="type">String</code></td><td class="optional-column"></td><td></td><td>The attribute value</td></tr><tr><td><code>oParser</code></td><td><code class="type">						<code><a href="BiXmlResourceParser.html">BiXmlResourceParser</a></code>					</code></td><td class="optional-column"><img src="check.png" alt="checked"></td><td></td><td>Optional parser that was used to 										read an XML file</td></tr></tbody></table><h4>Return Type</h4><p><code class="type">void</code></p></body></html>

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