ckeditor/_source/core/dom/event.js

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/*
Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

/**
 * @fileOverview Defines the {@link CKEDITOR.dom.event} class, which
 *		represents the a native DOM event object.
 */

/**
 * Represents a native DOM event object.
 * @constructor
 * @param {Object} domEvent A native DOM event object.
 * @example
 */
CKEDITOR.dom.event = function( domEvent )
{
	/**
	 * The native DOM event object represented by this class instance.
	 * @type Object
	 * @example
	 */
	this.$ = domEvent;
};

CKEDITOR.dom.event.prototype =
{
	/**
	 * Gets the key code associated to the event.
	 * @returns {Number} The key code.
	 * @example
	 * alert( event.getKey() );  "65" is "a" has been pressed
	 */
	getKey : function()
	{
		return this.$.keyCode || this.$.which;
	},

	/**
	 * Gets a number represeting the combination of the keys pressed during the
	 * event. It is the sum with the current key code and the {@link CKEDITOR.CTRL},
	 * {@link CKEDITOR.SHIFT} and {@link CKEDITOR.ALT} constants.
	 * @returns {Number} The number representing the keys combination.
	 * @example
	 * alert( event.getKeystroke() == 65 );                                   // "a" key
	 * alert( event.getKeystroke() == CKEDITOR.CTRL + 65 );                   // CTRL + "a" key
	 * alert( event.getKeystroke() == CKEDITOR.CTRL + CKEDITOR.SHIFT + 65 );  // CTRL + SHIFT + "a" key
	 */
	getKeystroke : function()
	{
		var keystroke = this.getKey();

		if ( this.$.ctrlKey || this.$.metaKey )
			keystroke += CKEDITOR.CTRL;

		if ( this.$.shiftKey )
			keystroke += CKEDITOR.SHIFT;

		if ( this.$.altKey )