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/*
Copyright (c) 2003-2012, 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 )
keystroke += CKEDITOR.ALT;
return keystroke;
},
/**
* Prevents the original behavior of the event to happen. It can optionally
* stop propagating the event in the event chain.
* @param {Boolean} [stopPropagation] Stop propagating this event in the
* event chain.
* @example
* var element = CKEDITOR.document.getById( 'myElement' );
* element.on( 'click', function( ev )
* {
* // The DOM event object is passed by the "data" property.
* var domEvent = ev.data;
* // Prevent the click to chave any effect in the element.
* domEvent.preventDefault();
* });
*/
preventDefault : function( stopPropagation )
{
var $ = this.$;
if ( $.preventDefault )
$.preventDefault();
else
$.returnValue = false;
if ( stopPropagation )
this.stopPropagation();
},
stopPropagation : function()
{
var $ = this.$;
if ( $.stopPropagation )
$.stopPropagation();
else
$.cancelBubble = true;
},
/**
* Returns the DOM node where the event was targeted to.
* @returns {CKEDITOR.dom.node} The target DOM node.
* @example
* var element = CKEDITOR.document.getById( 'myElement' );
* element.on( 'click', function( ev )
* {
* // The DOM event object is passed by the "data" property.
* var domEvent = ev.data;
* // Add a CSS class to the event target.
* domEvent.getTarget().addClass( 'clicked' );
* });
*/
getTarget : function()
{
var rawNode = this.$.target || this.$.srcElement;
return rawNode ? new CKEDITOR.dom.node( rawNode ) : null;
}
};
// For the followind constants, we need to go over the Unicode boundaries
// (0x10FFFF) to avoid collision.
/**
* CTRL key (0x110000).
* @constant
* @example
*/
CKEDITOR.CTRL = 0x110000;
/**
* SHIFT key (0x220000).
* @constant
* @example
*/
CKEDITOR.SHIFT = 0x220000;
/**
* ALT key (0x440000).
* @constant
* @example
*/
CKEDITOR.ALT = 0x440000;
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