Upgrade to ExtJS 3.1.0 - Released 12/16/2009

[extjs.git] / docs / output / Function.html

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+++ b/docs/output/Function.html
@@ -1,69 +1,69 @@
-<div class="body-wrap" xmlns:ext="http://www.extjs.com"><div class="top-tools"><a class="inner-link" href="#Function-props"><img src="resources/images/default/s.gif" class="item-icon icon-prop">Properties</a>&#13;<a class="inner-link" href="#Function-methods"><img src="resources/images/default/s.gif" class="item-icon icon-method">Methods</a>&#13;<a class="inner-link" href="#Function-events"><img src="resources/images/default/s.gif" class="item-icon icon-event">Events</a>&#13;<a class="bookmark" href="../docs/?class=Function"><img src="resources/images/default/s.gif" class="item-icon icon-fav">Direct Link</a>&#13;</div><h1>Class <a href="source/Ext.html#cls-Function">Function</a></h1><table cellspacing="0"><tr><td class="label">Package:</td><td class="hd-info">Global</td></tr><tr><td class="label">Defined In:</td><td class="hd-info">Ext.js,&#13;Ext-more.js</td></tr><tr><td class="label">Class:</td><td class="hd-info"><a href="source/Ext.html#cls-Function">Function</a></td></tr><tr><td class="label">Extends:</td><td class="hd-info">Object</td></tr><tr><td class="hd-info"></td></tr></table><div class="description">These functions are available on every Function object (any JavaScript function).</div><div class="hr"></div><a id="Function-props"></a><h2>Public Properties</h2><div class="no-members">This class has no public properties.</div><a id="Function-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">&nbsp;</a></td><td class="sig"><a id="Function-createCallback"></a><b><a href="source/Ext.html#method-Function-createCallback">createCallback</a></b>()\r
+<div xmlns:ext="http://www.extjs.com" class="body-wrap"><h1>Class <a href="source/Ext.html#cls-Function">Function</a></h1><table cellspacing="0"><tr><td class="label">Package:</td><td class="hd-info">Global</td></tr><tr><td class="label">Defined In:</td><td class="hd-info">Ext.js,&#13;Ext-more.js</td></tr><tr><td class="label">Class:</td><td class="hd-info"><a href="source/Ext.html#cls-Function">Function</a></td></tr><tr><td class="label">Extends:</td><td class="hd-info">Object</td></tr></table><div class="description">These functions are available on every Function object (any JavaScript function).</div><div class="hr"></div><a id="Function-props"></a><h2>Public Properties</h2><div class="no-members">This class has no public properties.</div><a id="Function-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">&nbsp;</a></td><td class="sig"><a id="Function-createCallback"></a><b><a href="source/Ext.html#method-Function-createCallback">createCallback</a></b>()\r

     :\r
     :\r

-                                        Function<div class="mdesc"><div class="short">Creates a callback that passes arguments[0], arguments[1], arguments[2], ...&#13;\r
-Call directly on any function. Example:...</div><div class="long">Creates a callback that passes arguments[0], arguments[1], arguments[2], ...\r
-Call directly on any function. Example: <code>myFunction.createCallback(arg1, arg2)</code>\r
-Will create a function that is bound to those 2 args. <b>If a specific scope is required in the\r
-callback, use <a href="output/Function.html#Function-createDelegate" ext:member="createDelegate" ext:cls="Function">createDelegate</a> instead.</b> The function returned by createCallback always\r
-executes in the window scope.\r
-<p>This method is required when you want to pass arguments to a callback function.  If no arguments\r
-are needed, you can simply pass a reference to the function as a callback (e.g., callback: myFn).\r
-However, if you tried to pass a function with arguments (e.g., callback: myFn(arg1, arg2)) the function\r
-would simply execute immediately when the code is parsed. Example usage:\r
-<pre><code><b>var</b> sayHi = <b>function</b>(name){\r
-    alert(<em>'Hi, '</em> + name);\r
-}\r
-\r
-<i>// clicking the button alerts <em>"Hi, Fred"</em>\r</i>
-<b>new</b> Ext.Button({\r
-    text: <em>'Say Hi'</em>,\r
-    renderTo: Ext.getBody(),\r
-    handler: sayHi.createCallback(<em>'Fred'</em>)\r
+                                        Function<div class="mdesc"><div class="short">Creates a callback that passes arguments[0], arguments[1], arguments[2], ...\r
+Call directly on any function. Example: ...</div><div class="long">Creates a callback that passes arguments[0], arguments[1], arguments[2], ...
+Call directly on any function. Example: <code>myFunction.createCallback(arg1, arg2)</code>
+Will create a function that is bound to those 2 args. <b>If a specific scope is required in the
+callback, use <a href="output/Function.html#Function-createDelegate" ext:member="createDelegate" ext:cls="Function">createDelegate</a> instead.</b> The function returned by createCallback always
+executes in the window scope.
+<p>This method is required when you want to pass arguments to a callback function.  If no arguments
+are needed, you can simply pass a reference to the function as a callback (e.g., callback: myFn).
+However, if you tried to pass a function with arguments (e.g., callback: myFn(arg1, arg2)) the function
+would simply execute immediately when the code is parsed. Example usage:
+<pre><code><b>var</b> sayHi = <b>function</b>(name){
+    alert(<em>'Hi, '</em> + name);
+}
+
+<i>// clicking the button alerts <em>"Hi, Fred"</em></i>
+<b>new</b> Ext.Button({
+    text: <em>'Say Hi'</em>,
+    renderTo: Ext.getBody(),
+    handler: sayHi.createCallback(<em>'Fred'</em>)

 });</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li>None.</li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Function-createDelegate"></a><b><a href="source/Ext.html#method-Function-createDelegate">createDelegate</a></b>(&nbsp;<span title="Optional" class="optional">[<code>Object&nbsp;scope</code>]</span>,&nbsp;<span title="Optional" class="optional">[<code>Array&nbsp;args</code>]</span>,&nbsp;<span title="Optional" class="optional">[<code>Boolean/Number&nbsp;appendArgs</code>]</span>&nbsp;)\r
     :\r
 });</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li>None.</li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Function-createDelegate"></a><b><a href="source/Ext.html#method-Function-createDelegate">createDelegate</a></b>(&nbsp;<span title="Optional" class="optional">[<code>Object&nbsp;scope</code>]</span>,&nbsp;<span title="Optional" class="optional">[<code>Array&nbsp;args</code>]</span>,&nbsp;<span title="Optional" class="optional">[<code>Boolean/Number&nbsp;appendArgs</code>]</span>&nbsp;)\r
     :\r

-                                        Function<div class="mdesc"><div class="short">Creates a delegate (callback) that sets the scope to obj.&#13;\r
-Call directly on any function. Example: this.myFunction.cr...</div><div class="long">Creates a delegate (callback) that sets the scope to obj.\r
-Call directly on any function. Example: <code>this.myFunction.createDelegate(this, [arg1, arg2])</code>\r
-Will create a function that is automatically scoped to obj so that the <tt>this</tt> variable inside the\r
-callback points to obj. Example usage:\r
-<pre><code><b>var</b> sayHi = <b>function</b>(name){\r
-    <i>// Note this use of <em>"this.text"</em> here.  This <b>function</b> expects to\r</i>
-    <i>// execute within a scope that contains a text property.  In this\r</i>
-    <i>// example, the <em>"this"</em> variable is pointing to the btn object that\r</i>
-    <i>// was passed <b>in</b> createDelegate below.\r</i>
-    alert(<em>'Hi, '</em> + name + <em>'. You clicked the <em>"'</em> + this.text + <em>'"</em> button.'</em>);\r
-}\r
-\r
-<b>var</b> btn = <b>new</b> Ext.Button({\r
-    text: <em>'Say Hi'</em>,\r
-    renderTo: Ext.getBody()\r
-});\r
-\r
-<i>// This callback will execute <b>in</b> the scope of the\r</i>
-<i>// button instance. Clicking the button alerts\r</i>
-<i>// <em>"Hi, Fred. You clicked the "</em>Say Hi<em>" button."</em>\r</i>
-btn.on(<em>'click'</em>, sayHi.createDelegate(btn, [<em>'Fred'</em>]));</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the function is executed.\r
-<b>If omitted, defaults to the browser window.</b></div></li><li><code>args</code> : Array<div class="sub-desc">(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)</div></li><li><code>appendArgs</code> : Boolean/Number<div class="sub-desc">(optional) if True args are appended to call args instead of overriding,\r
+                                        Function<div class="mdesc"><div class="short">Creates a delegate (callback) that sets the scope to obj.\r
+Call directly on any function. Example: this.myFunction.cre...</div><div class="long">Creates a delegate (callback) that sets the scope to obj.
+Call directly on any function. Example: <code>this.myFunction.createDelegate(this, [arg1, arg2])</code>
+Will create a function that is automatically scoped to obj so that the <tt>this</tt> variable inside the
+callback points to obj. Example usage:
+<pre><code><b>var</b> sayHi = <b>function</b>(name){
+    <i>// Note this use of <em>"this.text"</em> here.  This <b>function</b> expects to</i>
+    <i>// execute within a scope that contains a text property.  In this</i>
+    <i>// example, the <em>"this"</em> variable is pointing to the btn object that</i>
+    <i>// was passed <b>in</b> createDelegate below.</i>
+    alert(<em>'Hi, '</em> + name + <em>'. You clicked the <em>"'</em> + this.text + <em>'"</em> button.'</em>);
+}
+
+<b>var</b> btn = <b>new</b> Ext.Button({
+    text: <em>'Say Hi'</em>,
+    renderTo: Ext.getBody()
+});
+
+<i>// This callback will execute <b>in</b> the scope of the</i>
+<i>// button instance. Clicking the button alerts</i>
+<i>// <em>"Hi, Fred. You clicked the "</em>Say Hi<em>" button."</em></i>
+btn.on(<em>'click'</em>, sayHi.createDelegate(btn, [<em>'Fred'</em>]));</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the function is executed.
+<b>If omitted, defaults to the browser window.</b></div></li><li><code>args</code> : Array<div class="sub-desc">(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)</div></li><li><code>appendArgs</code> : Boolean/Number<div class="sub-desc">(optional) if True args are appended to call args instead of overriding,

 if a number the args are inserted at the specified position</div></li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Function-createInterceptor"></a><b><a href="source/Ext.html#method-Function-createInterceptor">createInterceptor</a></b>(&nbsp;<code>Function&nbsp;fcn</code>,&nbsp;<span title="Optional" class="optional">[<code>Object&nbsp;scope</code>]</span>&nbsp;)\r
     :\r
 if a number the args are inserted at the specified position</div></li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Function-createInterceptor"></a><b><a href="source/Ext.html#method-Function-createInterceptor">createInterceptor</a></b>(&nbsp;<code>Function&nbsp;fcn</code>,&nbsp;<span title="Optional" class="optional">[<code>Object&nbsp;scope</code>]</span>&nbsp;)\r
     :\r

-                                        Function<div class="mdesc"><div class="short">Creates an interceptor function. The passed function is called before the original one. If it returns false,&#13;\r
-the ori...</div><div class="long">Creates an interceptor function. The passed function is called before the original one. If it returns false,\r
-the original one is not called. The resulting function returns the results of the original function.\r
-The passed function is called with the parameters of the original function. Example usage:\r
-<pre><code><b>var</b> sayHi = <b>function</b>(name){\r
-    alert(<em>'Hi, '</em> + name);\r
-}\r
-\r
-sayHi(<em>'Fred'</em>); <i>// alerts <em>"Hi, Fred"</em>\r</i>
-\r
-<i>// create a <b>new</b> <b>function</b> that validates input without\r</i>
-<i>// directly modifying the original <b>function</b>:\r</i>
-<b>var</b> sayHiToFriend = sayHi.createInterceptor(<b>function</b>(name){\r
-    <b>return</b> name == <em>'Brian'</em>;\r
-});\r
-\r
-sayHiToFriend(<em>'Fred'</em>);  <i>// no alert\r</i>
-sayHiToFriend(<em>'Brian'</em>); <i>// alerts <em>"Hi, Brian"</em></i></code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>fcn</code> : Function<div class="sub-desc">The function to call before the original</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the passed function is executed.\r
+                                        Function<div class="mdesc"><div class="short">Creates an interceptor function. The passed function is called before the original one. If it returns false,\r
+the orig...</div><div class="long">Creates an interceptor function. The passed function is called before the original one. If it returns false,
+the original one is not called. The resulting function returns the results of the original function.
+The passed function is called with the parameters of the original function. Example usage:
+<pre><code><b>var</b> sayHi = <b>function</b>(name){
+    alert(<em>'Hi, '</em> + name);
+}
+
+sayHi(<em>'Fred'</em>); <i>// alerts <em>"Hi, Fred"</em></i>
+
+<i>// create a <b>new</b> <b>function</b> that validates input without</i>
+<i>// directly modifying the original <b>function</b>:</i>
+<b>var</b> sayHiToFriend = sayHi.createInterceptor(<b>function</b>(name){
+    <b>return</b> name == <em>'Brian'</em>;
+});
+
+sayHiToFriend(<em>'Fred'</em>);  <i>// no alert</i>
+sayHiToFriend(<em>'Brian'</em>); <i>// alerts <em>"Hi, Brian"</em></i></code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>fcn</code> : Function<div class="sub-desc">The function to call before the original</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the passed function is executed.

 <b>If omitted, defaults to the scope in which the original function is called or the browser window.</b></div></li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Function-createSequence"></a><b><a href="source/Ext-more.html#method-Function-createSequence">createSequence</a></b>(&nbsp;<code>Function&nbsp;fcn</code>,&nbsp;<span title="Optional" class="optional">[<code>Object&nbsp;scope</code>]</span>&nbsp;)\r
     :\r
                                         Function<div class="mdesc"><div class="short">Create a combined function call sequence of the original function + the passed function.\r
 <b>If omitted, defaults to the scope in which the original function is called or the browser window.</b></div></li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Function-createSequence"></a><b><a href="source/Ext-more.html#method-Function-createSequence">createSequence</a></b>(&nbsp;<code>Function&nbsp;fcn</code>,&nbsp;<span title="Optional" class="optional">[<code>Object&nbsp;scope</code>]</span>&nbsp;)\r
     :\r
                                         Function<div class="mdesc"><div class="short">Create a combined function call sequence of the original function + the passed function.\r


@@ -83,22 +83,22 @@ sayHi(<em>'Fred'</em>); <i>// alerts <em>"Hi, Fred"</em></i>
 sayGoodbye(<em>'Fred'</em>); <i>// both alerts show</i></code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>fcn</code> : Function<div class="sub-desc">The function to sequence</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the passed function is executed.
 <b>If omitted, defaults to the scope in which the original function is called or the browser window.</b></div></li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Function-defer"></a><b><a href="source/Ext.html#method-Function-defer">defer</a></b>(&nbsp;<code>Number&nbsp;millis</code>,&nbsp;<span title="Optional" class="optional">[<code>Object&nbsp;scope</code>]</span>,&nbsp;<span title="Optional" class="optional">[<code>Array&nbsp;args</code>]</span>,&nbsp;<span title="Optional" class="optional">[<code>Boolean/Number&nbsp;appendArgs</code>]</span>&nbsp;)\r
     :\r
 sayGoodbye(<em>'Fred'</em>); <i>// both alerts show</i></code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>fcn</code> : Function<div class="sub-desc">The function to sequence</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the passed function is executed.
 <b>If omitted, defaults to the scope in which the original function is called or the browser window.</b></div></li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Function-defer"></a><b><a href="source/Ext.html#method-Function-defer">defer</a></b>(&nbsp;<code>Number&nbsp;millis</code>,&nbsp;<span title="Optional" class="optional">[<code>Object&nbsp;scope</code>]</span>,&nbsp;<span title="Optional" class="optional">[<code>Array&nbsp;args</code>]</span>,&nbsp;<span title="Optional" class="optional">[<code>Boolean/Number&nbsp;appendArgs</code>]</span>&nbsp;)\r
     :\r

-                                        Number<div class="mdesc"><div class="short">Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:&#13;\r
-var sa...</div><div class="long">Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:\r
-<pre><code><b>var</b> sayHi = <b>function</b>(name){\r
-    alert(<em>'Hi, '</em> + name);\r
-}\r
-\r
-<i>// executes immediately:\r</i>
-sayHi(<em>'Fred'</em>);\r
-\r
-<i>// executes after 2 seconds:\r</i>
-sayHi.defer(2000, this, [<em>'Fred'</em>]);\r
-\r
-<i>// this syntax is sometimes useful <b>for</b> deferring\r</i>
-<i>// execution of an anonymous <b>function</b>:\r</i>
-(<b>function</b>(){\r
-    alert(<em>'Anonymous'</em>);\r
-}).defer(100);</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>millis</code> : Number<div class="sub-desc">The number of milliseconds for the setTimeout call (if less than or equal to 0 the function is executed immediately)</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the function is executed.\r
-<b>If omitted, defaults to the browser window.</b></div></li><li><code>args</code> : Array<div class="sub-desc">(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)</div></li><li><code>appendArgs</code> : Boolean/Number<div class="sub-desc">(optional) if True args are appended to call args instead of overriding,\r
+                                        Number<div class="mdesc"><div class="short">Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:\r
+var say...</div><div class="long">Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:
+<pre><code><b>var</b> sayHi = <b>function</b>(name){
+    alert(<em>'Hi, '</em> + name);
+}
+
+<i>// executes immediately:</i>
+sayHi(<em>'Fred'</em>);
+
+<i>// executes after 2 seconds:</i>
+sayHi.defer(2000, this, [<em>'Fred'</em>]);
+
+<i>// this syntax is sometimes useful <b>for</b> deferring</i>
+<i>// execution of an anonymous <b>function</b>:</i>
+(<b>function</b>(){
+    alert(<em>'Anonymous'</em>);
+}).defer(100);</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>millis</code> : Number<div class="sub-desc">The number of milliseconds for the setTimeout call (if less than or equal to 0 the function is executed immediately)</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the function is executed.
+<b>If omitted, defaults to the browser window.</b></div></li><li><code>args</code> : Array<div class="sub-desc">(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)</div></li><li><code>appendArgs</code> : Boolean/Number<div class="sub-desc">(optional) if True args are appended to call args instead of overriding,

 if a number the args are inserted at the specified position</div></li></ul><strong>Returns:</strong><ul><li><code>Number</code><div class="sub-desc">The timeout id that can be used with clearTimeout</div></li></ul></div></div></div></td><td class="msource">Function</td></tr></tbody></table><a id="Function-events"></a><h2>Public Events</h2><div class="no-members">This class has no public events.</div></div>
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 if a number the args are inserted at the specified position</div></li></ul><strong>Returns:</strong><ul><li><code>Number</code><div class="sub-desc">The timeout id that can be used with clearTimeout</div></li></ul></div></div></div></td><td class="msource">Function</td></tr></tbody></table><a id="Function-events"></a><h2>Public Events</h2><div class="no-members">This class has no public events.</div></div>
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