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/*
* FCKeditor - The text editor for Internet - http://www.fckeditor.net
* Copyright (C) 2003-2009 Frederico Caldeira Knabben
*
* == BEGIN LICENSE ==
*
* Licensed under the terms of any of the following licenses at your
* choice:
*
* - GNU General Public License Version 2 or later (the "GPL")
* http://www.gnu.org/licenses/gpl.html
*
* - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
* http://www.gnu.org/licenses/lgpl.html
*
* - Mozilla Public License Version 1.1 or later (the "MPL")
* http://www.mozilla.org/MPL/MPL-1.1.html
*
* == END LICENSE ==
*
* FCKJustifyCommand Class: controls block justification.
*/
var FCKJustifyCommand = function( alignValue )
{
this.AlignValue = alignValue ;
// Detect whether this is the instance for the default alignment.
var contentDir = FCKConfig.ContentLangDirection.toLowerCase() ;
this.IsDefaultAlign = ( alignValue == 'left' && contentDir == 'ltr' ) ||
( alignValue == 'right' && contentDir == 'rtl' ) ;
// Get the class name to be used by this instance.
var cssClassName = this._CssClassName = ( function()
{
var classes = FCKConfig.JustifyClasses ;
if ( classes )
{
switch ( alignValue )
{
case 'left' :
return classes[0] || null ;
case 'center' :
return classes[1] || null ;
case 'right' :
return classes[2] || null ;
case 'justify' :
return classes[3] || null ;
}
}
return null ;
} )() ;
if ( cssClassName && cssClassName.length > 0 )
this._CssClassRegex = new RegExp( '(?:^|\\s+)' + cssClassName + '(?=$|\\s)' ) ;
}
FCKJustifyCommand._GetClassNameRegex = function()
{
var regex = FCKJustifyCommand._ClassRegex ;
if ( regex != undefined )
return regex ;
var names = [] ;
var classes = FCKConfig.JustifyClasses ;
if ( classes )
{
for ( var i = 0 ; i < 4 ; i++ )
{
var className = classes[i] ;
if ( className && className.length > 0 )
names.push( className ) ;
}
}
if ( names.length > 0 )
regex = new RegExp( '(?:^|\\s+)(?:' + names.join( '|' ) + ')(?=$|\\s)' ) ;
else
regex = null ;
return FCKJustifyCommand._ClassRegex = regex ;
}
FCKJustifyCommand.prototype =
{
Execute : function()
{
// Save an undo snapshot before doing anything.
FCKUndo.SaveUndoStep() ;
var range = new FCKDomRange( FCK.EditorWindow ) ;
range.MoveToSelection() ;
var currentState = this.GetState() ;
if ( currentState == FCK_TRISTATE_DISABLED )
return ;
// Store a bookmark of the selection since the paragraph iterator might
// change the DOM tree and break selections.
var bookmark = range.CreateBookmark() ;
var cssClassName = this._CssClassName ;
// Apply alignment setting for each paragraph.
var iterator = new FCKDomRangeIterator( range ) ;
var block ;
while ( ( block = iterator.GetNextParagraph() ) )
{
block.removeAttribute( 'align' ) ;
if ( cssClassName )
{
// Remove the any of the alignment classes from the className.
var className = block.className.replace( FCKJustifyCommand._GetClassNameRegex(), '' ) ;
// Append the desired class name.
if ( currentState == FCK_TRISTATE_OFF )
{
if ( className.length > 0 )
className += ' ' ;
block.className = className + cssClassName ;
}
else if ( className.length == 0 )
FCKDomTools.RemoveAttribute( block, 'class' ) ;
}
else
{
var style = block.style ;
if ( currentState == FCK_TRISTATE_OFF )
style.textAlign = this.AlignValue ;
else
{
style.textAlign = '' ;
if ( style.cssText.length == 0 )
block.removeAttribute( 'style' ) ;
}
}
}
// Restore previous selection.
range.MoveToBookmark( bookmark ) ;
range.Select() ;
FCK.Focus() ;
FCK.Events.FireEvent( 'OnSelectionChange' ) ;
},
GetState : function()
{
// Disabled if not WYSIWYG.
if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG || ! FCK.EditorWindow )
return FCK_TRISTATE_DISABLED ;
// Retrieve the first selected block.
var path = new FCKElementPath( FCKSelection.GetBoundaryParentElement( true ) ) ;
var firstBlock = path.Block || path.BlockLimit ;
if ( !firstBlock || firstBlock.nodeName.toLowerCase() == 'body' )
return FCK_TRISTATE_OFF ;
// Check if the desired style is already applied to the block.
var currentAlign ;
if ( FCKBrowserInfo.IsIE )
currentAlign = firstBlock.currentStyle.textAlign ;
else
currentAlign = FCK.EditorWindow.getComputedStyle( firstBlock, '' ).getPropertyValue( 'text-align' );
currentAlign = currentAlign.replace( /(-moz-|-webkit-|start|auto)/i, '' );
if ( ( !currentAlign && this.IsDefaultAlign ) || currentAlign == this.AlignValue )
return FCK_TRISTATE_ON ;
return FCK_TRISTATE_OFF ;
}
} ;
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