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18 <pre class="prettyprint lang-js"><span id='Ext-util-KeyNav-method-constructor'><span id='Ext-util-KeyNav'>/**
19 </span></span> * @class Ext.util.KeyNav
20 * <p>Provides a convenient wrapper for normalized keyboard navigation. KeyNav allows you to bind
21 * navigation keys to function calls that will get called when the keys are pressed, providing an easy
22 * way to implement custom navigation schemes for any UI component.</p>
23 * <p>The following are all of the possible keys that can be implemented: enter, space, left, right, up, down, tab, esc,
24 * pageUp, pageDown, del, backspace, home, end. Usage:</p>
25 <pre><code>
26 var nav = new Ext.util.KeyNav("my-element", {
27 "left" : function(e){
28 this.moveLeft(e.ctrlKey);
30 "right" : function(e){
31 this.moveRight(e.ctrlKey);
33 "enter" : function(e){
38 </code></pre>
40 * @param {Mixed} el The element to bind to
41 * @param {Object} config The config
43 Ext.define('Ext.util.KeyNav', {
45 alternateClassName: 'Ext.KeyNav',
47 requires: ['Ext.util.KeyMap'],
68 constructor: function(el, config){
69 this.setConfig(el, config || {});
72 <span id='Ext-util-KeyNav-method-setConfig'> /**
73 </span> * Sets up a configuration for the KeyNav.
75 * @param {Mixed} el The element to bind to
76 * @param {Object}A configuration object as specified in the constructor.
78 setConfig: function(el, config) {
83 var map = Ext.create('Ext.util.KeyMap', el, null, this.getKeyEvent('forceKeyDown' in config ? config.forceKeyDown : this.forceKeyDown)),
84 keys = Ext.util.KeyNav.keyOptions,
85 scope = config.scope || this,
90 if (keys.hasOwnProperty(key)) {
95 handler: Ext.Function.bind(this.handleEvent, scope, [config[key]], true),
96 defaultEventAction: config.defaultEventAction || this.defaultEventAction
103 if (!config.disabled) {
108 <span id='Ext-util-KeyNav-method-handleEvent'> /**
109 </span> * Method for filtering out the map argument
111 * @param {Ext.util.KeyMap} map
112 * @param {Ext.EventObject} event
113 * @param {Object} options Contains the handler to call
115 handleEvent: function(map, event, handler){
116 return handler.call(this, event);
119 <span id='Ext-util-KeyNav-cfg-disabled'> /**
120 </span> * @cfg {Boolean} disabled
121 * True to disable this KeyNav instance (defaults to false)
125 <span id='Ext-util-KeyNav-cfg-defaultEventAction'> /**
126 </span> * @cfg {String} defaultEventAction
127 * The method to call on the {@link Ext.EventObject} after this KeyNav intercepts a key. Valid values are
128 * {@link Ext.EventObject#stopEvent}, {@link Ext.EventObject#preventDefault} and
129 * {@link Ext.EventObject#stopPropagation} (defaults to 'stopEvent')
131 defaultEventAction: "stopEvent",
133 <span id='Ext-util-KeyNav-cfg-forceKeyDown'> /**
134 </span> * @cfg {Boolean} forceKeyDown
135 * Handle the keydown event instead of keypress (defaults to false). KeyNav automatically does this for IE since
136 * IE does not propagate special keys on keypress, but setting this to true will force other browsers to also
137 * handle keydown instead of keypress.
141 <span id='Ext-util-KeyNav-method-destroy'> /**
142 </span> * Destroy this KeyNav (this is the same as calling disable).
143 * @param {Boolean} removeEl True to remove the element associated with this KeyNav.
145 destroy: function(removeEl){
146 this.map.destroy(removeEl);
150 <span id='Ext-util-KeyNav-method-enable'> /**
151 </span> * Enable this KeyNav
155 this.disabled = false;
158 <span id='Ext-util-KeyNav-method-disable'> /**
159 </span> * Disable this KeyNav
161 disable: function() {
163 this.disabled = true;
166 <span id='Ext-util-KeyNav-method-setDisabled'> /**
167 </span> * Convenience function for setting disabled/enabled by boolean.
168 * @param {Boolean} disabled
170 setDisabled : function(disabled){
171 this.map.setDisabled(disabled);
172 this.disabled = disabled;
175 <span id='Ext-util-KeyNav-method-getKeyEvent'> /**
176 </span> * Determines the event to bind to listen for keys. Depends on the {@link #forceKeyDown} setting,
177 * as well as the useKeyDown option on the EventManager.
178 * @return {String} The type of event to listen for.
180 getKeyEvent: function(forceKeyDown){
181 return (forceKeyDown || Ext.EventManager.useKeyDown) ? 'keydown' : 'keypress';