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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.focusManager} class, which is used
* to handle the focus on editor instances..
*/
/**
* Creates a focusManager class instance.
* @class Manages the focus activity in an editor instance. This class is to be
* used mainly by UI elements coders when adding interface elements that need
* to set the focus state of the editor.
* @param {CKEDITOR.editor} editor The editor instance.
* @example
* var focusManager = <b>new CKEDITOR.focusManager( editor )</b>;
* focusManager.focus();
*/
CKEDITOR.focusManager = function( editor )
{
if ( editor.focusManager )
return editor.focusManager;
/**
* Indicates that the editor instance has focus.
* @type Boolean
* @example
* alert( CKEDITOR.instances.editor1.focusManager.hasFocus ); // e.g "true"
*/
this.hasFocus = false;
/**
* Object used to hold private stuff.
* @private
*/
this._ =
{
editor : editor
};
return this;
};
CKEDITOR.focusManager.prototype =
{
/**
* Used to indicate that the editor instance has the focus.<br />
* <br />
* Note that this function will not explicitelly set the focus in the
* editor (for example, making the caret blinking on it). Use
* {@link CKEDITOR.editor#focus} for it instead.
* @example
* var editor = CKEDITOR.instances.editor1;
* <b>editor.focusManager.focus()</b>;
*/
focus : function()
{
if ( this._.timer )
clearTimeout( this._.timer );
if ( !this.hasFocus )
{
// If another editor has the current focus, we first "blur" it. In
// this way the events happen in a more logical sequence, like:
// "focus 1" > "blur 1" > "focus 2"
// ... instead of:
// "focus 1" > "focus 2" > "blur 1"
if ( CKEDITOR.currentInstance )
CKEDITOR.currentInstance.focusManager.forceBlur();
var editor = this._.editor;
editor.container.getChild( 1 ).addClass( 'cke_focus' );
this.hasFocus = true;
editor.fire( 'focus' );
}
},
/**
* Used to indicate that the editor instance has lost the focus.<br />
* <br />
* Note that this functions acts asynchronously with a delay of 100ms to
* avoid subsequent blur/focus effects. If you want the "blur" to happen
* immediately, use the {@link #forceBlur} function instead.
* @example
* var editor = CKEDITOR.instances.editor1;
* <b>editor.focusManager.blur()</b>;
*/
blur : function()
{
var focusManager = this;
if ( focusManager._.timer )
clearTimeout( focusManager._.timer );
focusManager._.timer = setTimeout(
function()
{
delete focusManager._.timer;
focusManager.forceBlur();
}
, 100 );
},
/**
* Used to indicate that the editor instance has lost the focus. Unlike
* {@link #blur}, this function is synchronous, marking the instance as
* "blured" immediately.
* @example
* var editor = CKEDITOR.instances.editor1;
* <b>editor.focusManager.forceBlur()</b>;
*/
forceBlur : function()
{
if ( this.hasFocus )
{
var editor = this._.editor;
editor.container.getChild( 1 ).removeClass( 'cke_focus' );
this.hasFocus = false;
editor.fire( 'blur' );
}
}
};
/**
* Fired when the editor instance receives the input focus.
* @name CKEDITOR.editor#focus
* @event
* @param {CKEDITOR.editor} editor The editor instance.
* @example
* editor.on( 'focus', function( e )
* {
* alert( 'The editor named ' + e.editor.name + ' is now focused' );
* });
*/
/**
* Fired when the editor instance loses the input focus.
* @name CKEDITOR.editor#blur
* @event
* @param {CKEDITOR.editor} editor The editor instance.
* @example
* editor.on( 'blur', function( e )
* {
* alert( 'The editor named ' + e.editor.name + ' lost the focus' );
* });
*/