124 lines
No EOL
4 KiB
HTML
124 lines
No EOL
4 KiB
HTML
<html><head><title>KeyNav.js</title><link rel="stylesheet" type="text/css" href="../resources/style.css" media="screen"/></head><body><h1>KeyNav.js</h1><pre class="highlighted"><code><i>/**
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* @class Ext.KeyNav
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* Provides a convenient wrapper <b>for</b> normalized keyboard navigation. KeyNav allows you to bind
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* navigation keys to <b>function</b> calls that will get called when the keys are pressed.
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* <br />Usage:
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<pre><code>
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<b>var</b> nav = <b>new</b> Ext.KeyNav("my-element", {
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"left" : <b>function</b>(e){
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<b>this</b>.moveLeft(e.ctrlKey);
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},
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"right" : <b>function</b>(e){
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<b>this</b>.moveRight(e.ctrlKey);
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},
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"enter" : <b>function</b>(e){
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<b>this</b>.save();
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},
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scope : <b>this</b>
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});
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</code></pre>
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* @constructor
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* @param {String/HTMLElement/Ext.Element} el The element to bind to
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* @param {Object} config The config
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*/</i>
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Ext.KeyNav = <b>function</b>(el, config){
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<b>this</b>.el = Ext.get(el);
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Ext.apply(<b>this</b>, config);
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<b>if</b>(!<b>this</b>.disabled){
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<b>this</b>.disabled = true;
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<b>this</b>.enable();
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}
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};
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Ext.KeyNav.prototype = {
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disabled : false,
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defaultEventAction: "stopEvent",
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prepareEvent : <b>function</b>(e){
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<b>var</b> k = e.getKey();
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<b>var</b> h = <b>this</b>.keyToHandler[k];
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<i>//<b>if</b>(h && <b>this</b>[h]){</i>
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<i>// e.stopPropagation();</i>
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<i>//}</i>
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<b>if</b>(Ext.isSafari && h && k >= 37 && k <= 40){
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e.stopEvent();
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}
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},
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relay : <b>function</b>(e){
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<b>var</b> k = e.getKey();
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<b>var</b> h = <b>this</b>.keyToHandler[k];
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<b>if</b>(h && <b>this</b>[h]){
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<b>if</b>(this.doRelay(e, <b>this</b>[h], h) !== true){
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e[<b>this</b>.defaultEventAction]();
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}
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}
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},
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doRelay : <b>function</b>(e, h, hname){
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<b>return</b> h.call(<b>this</b>.scope || <b>this</b>, e);
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},
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<i>// possible handlers</i>
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enter : false,
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left : false,
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right : false,
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up : false,
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down : false,
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tab : false,
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esc : false,
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pageUp : false,
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pageDown : false,
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del : false,
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home : false,
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end : false,
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<i>// quick lookup hash</i>
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keyToHandler : {
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37 : "left",
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39 : "right",
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38 : "up",
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40 : "down",
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33 : "pageUp",
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34 : "pageDown",
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46 : "del",
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36 : "home",
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35 : "end",
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13 : "enter",
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27 : "esc",
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9 : "tab"
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},
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<i>/**
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* Enable <b>this</b> KeyNav
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*/</i>
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enable: <b>function</b>(){
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<b>if</b>(this.disabled){
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<i>// ie won't <b>do</b> special keys on keypress, no one <b>else</b> will repeat keys <b>with</b> keydown</i>
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<i>// the EventObject will normalize Safari automatically</i>
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<b>if</b>(Ext.isIE){
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<b>this</b>.el.on("keydown", <b>this</b>.relay, <b>this</b>);
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}<b>else</b>{
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<b>this</b>.el.on("keydown", <b>this</b>.prepareEvent, <b>this</b>);
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<b>this</b>.el.on("keypress", <b>this</b>.relay, <b>this</b>);
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}
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<b>this</b>.disabled = false;
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}
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},
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<i>/**
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* Disable <b>this</b> KeyNav
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*/</i>
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disable: <b>function</b>(){
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<b>if</b>(!<b>this</b>.disabled){
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<b>if</b>(Ext.isIE){
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<b>this</b>.el.un("keydown", <b>this</b>.relay);
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}<b>else</b>{
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<b>this</b>.el.un("keydown", <b>this</b>.prepareEvent);
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<b>this</b>.el.un("keypress", <b>this</b>.relay);
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}
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<b>this</b>.disabled = true;
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}
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}
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};</code></pre><hr><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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