1 <!DOCTYPE html><html><head><title>Sencha Documentation Project</title><link rel="stylesheet" href="../reset.css" type="text/css"><link rel="stylesheet" href="../prettify.css" type="text/css"><link rel="stylesheet" href="../prettify_sa.css" type="text/css"><script type="text/javascript" src="../prettify.js"></script></head><body onload="prettyPrint()"><pre class="prettyprint"><pre><span id='Ext-util.KeyNav-method-constructor'><span id='Ext-util.KeyNav'>/**
2 </span></span> * @class Ext.util.KeyNav
3 * <p>Provides a convenient wrapper for normalized keyboard navigation. KeyNav allows you to bind
4 * navigation keys to function calls that will get called when the keys are pressed, providing an easy
5 * way to implement custom navigation schemes for any UI component.</p>
6 * <p>The following are all of the possible keys that can be implemented: enter, space, left, right, up, down, tab, esc,
7 * pageUp, pageDown, del, backspace, home, end. Usage:</p>
8 <pre><code>
9 var nav = new Ext.util.KeyNav("my-element", {
10 "left" : function(e){
11 this.moveLeft(e.ctrlKey);
13 "right" : function(e){
14 this.moveRight(e.ctrlKey);
16 "enter" : function(e){
21 </code></pre>
23 * @param {Mixed} el The element to bind to
24 * @param {Object} config The config
26 Ext.define('Ext.util.KeyNav', {
28 alternateClassName: 'Ext.KeyNav',
30 requires: ['Ext.util.KeyMap'],
51 constructor: function(el, config){
52 this.setConfig(el, config || {});
55 <span id='Ext-util.KeyNav-method-setConfig'> /**
56 </span> * Sets up a configuration for the KeyNav.
58 * @param {Mixed} el The element to bind to
59 * @param {Object}A configuration object as specified in the constructor.
61 setConfig: function(el, config) {
66 var map = Ext.create('Ext.util.KeyMap', el, null, this.getKeyEvent('forceKeyDown' in config ? config.forceKeyDown : this.forceKeyDown)),
67 keys = Ext.util.KeyNav.keyOptions,
68 scope = config.scope || this,
73 if (keys.hasOwnProperty(key)) {
78 handler: Ext.Function.bind(this.handleEvent, scope, [config[key]], true),
79 defaultEventAction: config.defaultEventAction || this.defaultEventAction
86 if (!config.disabled) {
91 <span id='Ext-util.KeyNav-method-handleEvent'> /**
92 </span> * Method for filtering out the map argument
94 * @param {Ext.util.KeyMap} map
95 * @param {Ext.EventObject} event
96 * @param {Object} options Contains the handler to call
98 handleEvent: function(map, event, handler){
99 return handler.call(this, event);
102 <span id='Ext-util.KeyNav-cfg-disabled'> /**
103 </span> * @cfg {Boolean} disabled
104 * True to disable this KeyNav instance (defaults to false)
108 <span id='Ext-util.KeyNav-cfg-defaultEventAction'> /**
109 </span> * @cfg {String} defaultEventAction
110 * The method to call on the {@link Ext.EventObject} after this KeyNav intercepts a key. Valid values are
111 * {@link Ext.EventObject#stopEvent}, {@link Ext.EventObject#preventDefault} and
112 * {@link Ext.EventObject#stopPropagation} (defaults to 'stopEvent')
114 defaultEventAction: "stopEvent",
116 <span id='Ext-util.KeyNav-cfg-forceKeyDown'> /**
117 </span> * @cfg {Boolean} forceKeyDown
118 * Handle the keydown event instead of keypress (defaults to false). KeyNav automatically does this for IE since
119 * IE does not propagate special keys on keypress, but setting this to true will force other browsers to also
120 * handle keydown instead of keypress.
124 <span id='Ext-util.KeyNav-method-destroy'> /**
125 </span> * Destroy this KeyNav (this is the same as calling disable).
126 * @param {Boolean} removeEl True to remove the element associated with this KeyNav.
128 destroy: function(removeEl){
129 this.map.destroy(removeEl);
133 <span id='Ext-util.KeyNav-method-enable'> /**
134 </span> * Enable this KeyNav
138 this.disabled = false;
141 <span id='Ext-util.KeyNav-method-disable'> /**
142 </span> * Disable this KeyNav
144 disable: function() {
146 this.disabled = true;
149 <span id='Ext-util.KeyNav-method-setDisabled'> /**
150 </span> * Convenience function for setting disabled/enabled by boolean.
151 * @param {Boolean} disabled
153 setDisabled : function(disabled){
154 this.map.setDisabled(disabled);
155 this.disabled = disabled;
158 <span id='Ext-util.KeyNav-method-getKeyEvent'> /**
159 </span> * Determines the event to bind to listen for keys. Depends on the {@link #forceKeyDown} setting,
160 * as well as the useKeyDown option on the EventManager.
161 * @return {String} The type of event to listen for.
163 getKeyEvent: function(forceKeyDown){
164 return (forceKeyDown || Ext.EventManager.useKeyDown) ? 'keydown' : 'keypress';
167 </pre></pre></body></html>