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12 KiB
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268 lines
No EOL
12 KiB
HTML
<!doctype html public "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html>
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<head>
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<title>Ext.KeyMap</title>
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<link rel="stylesheet" type="text/css" href="../resources/reset.css"/>
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<link rel="stylesheet" type="text/css" href="../resources/style.css" media="screen"/>
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<link rel="stylesheet" type="text/css" href="../resources/print.css" media="print">
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<!-- GC -->
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</head>
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<body>
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<div class="body-wrap">
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<div class="top-tools">
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<img src="../resources/print.gif" width="16" height="16" align="absmiddle"> <a href="Ext.KeyMap.html" target="_blank">Print Friendly</a><br/>
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</div>
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<h1>Class Ext.KeyMap</h1>
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<table cellspacing="0">
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<tr><td class="label">Package:</td><td>Ext</td></tr>
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<tr><td class="label">Class:</td><td>KeyMap</td></tr>
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<tr><td class="label">Extends:</td><td>Object</td></tr>
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<tr><td class="label">Defined In:</td><td><a href="KeyMap.jss.html">KeyMap.js</a></td></tr>
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</table>
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<div class="description">
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Handles mapping keys to actions for an element. One key map can be used for multiple actions.
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The constructor accepts the same config object as defined by <a href="#addBinding">addBinding</a>.
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If you bind a callback function to a KeyMap, anytime the KeyMap handles an expected key
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combination it will call the function with this signature (if the match is a multi-key
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combination the callback will still be called only once): (String key, Ext.EventObject e)
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A KeyMap can also handle a string representation of keys.<br />
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Usage:
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<pre class="highlighted"><code><i>// map one key by key code</i>
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<b>var</b> map = <b>new</b> Ext.KeyMap("my-element", {
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key: 13, <i>// or Ext.EventObject.ENTER</i>
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fn: myHandler,
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scope: myObject
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});
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<i>// map multiple keys to one action by string</i>
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<b>var</b> map = <b>new</b> Ext.KeyMap("my-element", {
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key: "a\r\n\t",
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fn: myHandler,
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scope: myObject
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});
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<i>// map multiple keys to multiple actions by strings and array of codes</i>
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<b>var</b> map = <b>new</b> Ext.KeyMap("my-element", [
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{
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key: [10,13],
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fn: <b>function</b>(){ alert("Return was pressed"); }
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}, {
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key: "abc",
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fn: <b>function</b>(){ alert('a, b or c was pressed'); }
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}, {
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key: "\t",
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ctrl:true,
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shift:true,
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fn: <b>function</b>(){ alert('Control + shift + tab was pressed.'); }
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}
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]);</code></pre>
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<b>Note: A KepMap starts enabled</b> </div>
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<br />
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<a href="#properties">Properties</a>
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- <a href="#methods">Methods</a>
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- <a href="#events">Events</a>
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<hr />
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<a name="properties"></a>
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<h2>Public Properties</h2>
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<table cellspacing="0" class="member-table">
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<tr>
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<th class="sig-header" colspan="2">Property</th>
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<th class="msource-header">Defined By</th>
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</tr>
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<tr>
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<td class="micon" rowspan="2"> </td>
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<td class="sig"><a class="mlink" href="#stopEvent">stopEvent</a> : Boolean</td>
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<td class="msource" rowspan="2">KeyMap</td>
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</tr>
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<tr>
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<td class="mdesc">True to stop the event from bubbling and prevent the default browser action if the
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key was handled by the KeyMap (def...</td>
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</tr>
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</table>
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<a name="methods"></a>
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<h2>Public Methods</h2>
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<table cellspacing="0" class="member-table">
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<tr>
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<th class="sig-header" colspan="2">Method</th>
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<th class="msource-header">Defined By</th>
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</tr>
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<tr>
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<td class="micon" rowspan="2"> </td>
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<td class="sig"><a class="mlink" href="#KeyMap">KeyMap</a>(<code>String/HTMLElement/Ext.Element el</code>, <code>Object config</code>, <span class="optional" title="Optional">[<code>String eventName</code>]</span>)</td>
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<td class="msource" rowspan="2">KeyMap</td>
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</tr>
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<tr>
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<td class="mdesc"></td>
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</tr>
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<tr class="alt">
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<td class="micon" rowspan="2"> </td>
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<td class="sig"><a class="mlink" href="#addBinding">addBinding</a>(<code>Object config</code>) : void</td>
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<td class="msource" rowspan="2">KeyMap</td>
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</tr>
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<tr class="alt">
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<td class="mdesc">Add a new binding to this KeyMap. The following config object properties are supported:
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Property Type ...</td>
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</tr>
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<tr>
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<td class="micon" rowspan="2"> </td>
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<td class="sig"><a class="mlink" href="#disable">disable</a>() : void</td>
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<td class="msource" rowspan="2">KeyMap</td>
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</tr>
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<tr>
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<td class="mdesc">Disable this KeyMap</td>
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</tr>
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<tr class="alt">
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<td class="micon" rowspan="2"> </td>
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<td class="sig"><a class="mlink" href="#enable">enable</a>() : void</td>
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<td class="msource" rowspan="2">KeyMap</td>
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</tr>
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<tr class="alt">
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<td class="mdesc">Enable this KeyMap</td>
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</tr>
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<tr>
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<td class="micon" rowspan="2"> </td>
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<td class="sig"><a class="mlink" href="#isEnabled">isEnabled</a>() : Boolean</td>
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<td class="msource" rowspan="2">KeyMap</td>
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</tr>
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<tr>
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<td class="mdesc">Returns true if this KepMap is enabled</td>
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</tr>
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</table>
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<a name="events"></a>
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<h2>Public Events</h2>
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<div class="no-members">This class has no public events.</div> <h2 class="mdetail-head">Property Details</h2>
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<div class="detail-wrap">
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<a name="stopEvent"></a>
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<div class="mdetail">
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<h3>stopEvent</i></h3>
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<code>public Boolean stopEvent</code>
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<div class="mdetail-desc">
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True to stop the event from bubbling and prevent the default browser action if the
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key was handled by the KeyMap (defaults to false) </div>
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<div class="mdetail-def">This property is defined by KeyMap.</div>
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</div>
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</div>
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<a name="KeyMap"></a>
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<h2 class="mdetail-head">Constructor Details</h2>
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<div class="detail-wrap">
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<div class="mdetail">
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<h3>KeyMap</i></h3>
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<code>public function KeyMap(<code>String/HTMLElement/Ext.Element el</code>, <code>Object config</code>, <span class="optional" title="Optional">[<code>String eventName</code>]</span>)</code>
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<div class="mdetail-desc">
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<div class="mdetail-params">
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<strong>Parameters:</strong>
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<ul><li><code>el</code> : String/HTMLElement/Ext.Element<div class="sub-desc">The element to bind to</div></li><li><code>config</code> : Object<div class="sub-desc">The config</div></li><li><code>eventName</code> : String<div class="sub-desc">(optional) The event to bind to (defaults to "keydown")</div></li> </ul>
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</div>
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</div>
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</div>
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</div>
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<h2 class="mdetail-head">Method Details</h2>
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<div class="detail-wrap">
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<a name="addBinding"></a>
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<div class="mdetail">
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<h3>addBinding</i></h3>
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<code>public function addBinding(<code>Object config</code>)</code>
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<div class="mdetail-desc">
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Add a new binding to this KeyMap. The following config object properties are supported:
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<pre>
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Property Type Description
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---------- --------------- ----------------------------------------------------------------------
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key String/Array A single keycode or an array of keycodes to handle
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shift Boolean True to handle key only when shift is pressed (defaults to false)
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ctrl Boolean True to handle key only when ctrl is pressed (defaults to false)
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alt Boolean True to handle key only when alt is pressed (defaults to false)
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fn Function The function to call when KeyMap finds the expected key combination
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scope Object The scope of the callback function
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</pre>
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Usage:
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<pre><code>
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// Create a KeyMap
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var map = new Ext.KeyMap(document, {
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key: Ext.EventObject.ENTER,
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fn: handleKey,
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scope: this
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});
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//Add a new binding to the existing KeyMap later
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map.addBinding({
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key: 'abc',
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shift: true,
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fn: handleKey,
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scope: this
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});
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</code></pre>
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<div class="mdetail-params">
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<strong>Parameters:</strong>
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<ul><li><code>config</code> : Object<div class="sub-desc">A single KeyMap config</div></li> </ul>
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<strong>Returns:</strong>
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<ul>
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<li><code>void</code></li>
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</ul>
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</div>
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</div>
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<div class="mdetail-def">This method is defined by KeyMap.</div>
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</div>
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<a name="disable"></a>
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<div class="mdetail alt">
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<h3>disable</i></h3>
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<code>public function disable()</code>
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<div class="mdetail-desc">
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Disable this KeyMap
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<div class="mdetail-params">
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<strong>Parameters:</strong>
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<ul><li>None.</li> </ul>
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<strong>Returns:</strong>
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<ul>
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<li><code>void</code></li>
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</ul>
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</div>
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</div>
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<div class="mdetail-def">This method is defined by KeyMap.</div>
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</div>
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<a name="enable"></a>
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<div class="mdetail">
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<h3>enable</i></h3>
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<code>public function enable()</code>
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<div class="mdetail-desc">
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Enable this KeyMap
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<div class="mdetail-params">
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<strong>Parameters:</strong>
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<ul><li>None.</li> </ul>
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<strong>Returns:</strong>
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<ul>
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<li><code>void</code></li>
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</ul>
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</div>
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</div>
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<div class="mdetail-def">This method is defined by KeyMap.</div>
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</div>
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<a name="isEnabled"></a>
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<div class="mdetail alt">
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<h3>isEnabled</i></h3>
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<code>public function isEnabled()</code>
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<div class="mdetail-desc">
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Returns true if this KepMap is enabled
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<div class="mdetail-params">
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<strong>Parameters:</strong>
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<ul><li>None.</li> </ul>
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<strong>Returns:</strong>
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<ul>
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<li><code>Boolean</code></li>
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</ul>
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</div>
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</div>
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<div class="mdetail-def">This method is defined by KeyMap.</div>
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</div>
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</div>
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</div>
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<hr>
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<div style="font-size:10px;text-align:center;color:gray;">Ext - Copyright © 2006-2007 Ext JS, LLC<br />All rights reserved.</div>
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</body>
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</html> |