mailiverse/web/WebContent/ckeditor/_source/plugins/bidi/plugin.js

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2013-07-21 13:40:17 -04:00
/*
Copyright (c) 2003-2012, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/
(function()
{
var guardElements = { table:1, ul:1, ol:1, blockquote:1, div:1 },
directSelectionGuardElements = {},
// All guard elements which can have a direction applied on them.
allGuardElements = {};
CKEDITOR.tools.extend( directSelectionGuardElements, guardElements, { tr:1, p:1, div:1, li:1 } );
CKEDITOR.tools.extend( allGuardElements, directSelectionGuardElements, { td:1 } );
function onSelectionChange( e )
{
setToolbarStates( e );
handleMixedDirContent( e );
}
function setToolbarStates( evt )
{
var editor = evt.editor,
path = evt.data.path;
if ( editor.readOnly )
return;
var useComputedState = editor.config.useComputedState,
selectedElement;
useComputedState = useComputedState === undefined || useComputedState;
// We can use computedState provided by the browser or traverse parents manually.
if ( !useComputedState )
selectedElement = getElementForDirection( path.lastElement );
selectedElement = selectedElement || path.block || path.blockLimit;
// If we're having BODY here, user probably done CTRL+A, let's try to get the enclosed node, if any.
if ( selectedElement.is( 'body' ) )
{
var enclosedNode = editor.getSelection().getRanges()[ 0 ].getEnclosedNode();
enclosedNode && enclosedNode.type == CKEDITOR.NODE_ELEMENT && ( selectedElement = enclosedNode );
}
if ( !selectedElement )
return;
var selectionDir = useComputedState ?
selectedElement.getComputedStyle( 'direction' ) :
selectedElement.getStyle( 'direction' ) || selectedElement.getAttribute( 'dir' );
editor.getCommand( 'bidirtl' ).setState( selectionDir == 'rtl' ? CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF );
editor.getCommand( 'bidiltr' ).setState( selectionDir == 'ltr' ? CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF );
}
function handleMixedDirContent( evt )
{
var editor = evt.editor,
directionNode = evt.data.path.block || evt.data.path.blockLimit;
editor.fire( 'contentDirChanged', directionNode ? directionNode.getComputedStyle( 'direction' ) : editor.lang.dir );
}
/**
* Returns element with possibility of applying the direction.
* @param node
*/
function getElementForDirection( node )
{
while ( node && !( node.getName() in allGuardElements || node.is( 'body' ) ) )
{
var parent = node.getParent();
if ( !parent )
break;
node = parent;
}
return node;
}
function switchDir( element, dir, editor, database )
{
if ( element.isReadOnly() )
return;
// Mark this element as processed by switchDir.
CKEDITOR.dom.element.setMarker( database, element, 'bidi_processed', 1 );
// Check whether one of the ancestors has already been styled.
var parent = element;
while ( ( parent = parent.getParent() ) && !parent.is( 'body' ) )
{
if ( parent.getCustomData( 'bidi_processed' ) )
{
// Ancestor style must dominate.
element.removeStyle( 'direction' );
element.removeAttribute( 'dir' );
return;
}
}
var useComputedState = ( 'useComputedState' in editor.config ) ? editor.config.useComputedState : 1;
var elementDir = useComputedState ? element.getComputedStyle( 'direction' )
: element.getStyle( 'direction' ) || element.hasAttribute( 'dir' );
// Stop if direction is same as present.
if ( elementDir == dir )
return;
// Clear direction on this element.
element.removeStyle( 'direction' );
// Do the second check when computed state is ON, to check
// if we need to apply explicit direction on this element.
if ( useComputedState )
{
element.removeAttribute( 'dir' );
if ( dir != element.getComputedStyle( 'direction' ) )
element.setAttribute( 'dir', dir );
}
else
// Set new direction for this element.
element.setAttribute( 'dir', dir );
editor.forceNextSelectionCheck();
return;
}
function getFullySelected( range, elements, enterMode )
{
var ancestor = range.getCommonAncestor( false, true );
range = range.clone();
range.enlarge( enterMode == CKEDITOR.ENTER_BR ?
CKEDITOR.ENLARGE_LIST_ITEM_CONTENTS
: CKEDITOR.ENLARGE_BLOCK_CONTENTS );
if ( range.checkBoundaryOfElement( ancestor, CKEDITOR.START )
&& range.checkBoundaryOfElement( ancestor, CKEDITOR.END ) )
{
var parent;
while ( ancestor && ancestor.type == CKEDITOR.NODE_ELEMENT
&& ( parent = ancestor.getParent() )
&& parent.getChildCount() == 1
&& !( ancestor.getName() in elements ) )
ancestor = parent;
return ancestor.type == CKEDITOR.NODE_ELEMENT
&& ( ancestor.getName() in elements )
&& ancestor;
}
}
function bidiCommand( dir )
{
return function( editor )
{
var selection = editor.getSelection(),
enterMode = editor.config.enterMode,
ranges = selection.getRanges();
if ( ranges && ranges.length )
{
var database = {};
// Creates bookmarks for selection, as we may split some blocks.
var bookmarks = selection.createBookmarks();
var rangeIterator = ranges.createIterator(),
range,
i = 0;
while ( ( range = rangeIterator.getNextRange( 1 ) ) )
{
// Apply do directly selected elements from guardElements.
var selectedElement = range.getEnclosedNode();
// If this is not our element of interest, apply to fully selected elements from guardElements.
if ( !selectedElement || selectedElement
&& !( selectedElement.type == CKEDITOR.NODE_ELEMENT && selectedElement.getName() in directSelectionGuardElements )
)
selectedElement = getFullySelected( range, guardElements, enterMode );
selectedElement && switchDir( selectedElement, dir, editor, database );
var iterator,
block;
// Walker searching for guardElements.
var walker = new CKEDITOR.dom.walker( range );
var start = bookmarks[ i ].startNode,
end = bookmarks[ i++ ].endNode;
walker.evaluator = function( node )
{
return !! ( node.type == CKEDITOR.NODE_ELEMENT
&& node.getName() in guardElements
&& !( node.getName() == ( enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' )
&& node.getParent().type == CKEDITOR.NODE_ELEMENT
&& node.getParent().getName() == 'blockquote' )
// Element must be fully included in the range as well. (#6485).
&& node.getPosition( start ) & CKEDITOR.POSITION_FOLLOWING
&& ( ( node.getPosition( end ) & CKEDITOR.POSITION_PRECEDING + CKEDITOR.POSITION_CONTAINS ) == CKEDITOR.POSITION_PRECEDING ) );
};
while ( ( block = walker.next() ) )
switchDir( block, dir, editor, database );
iterator = range.createIterator();
iterator.enlargeBr = enterMode != CKEDITOR.ENTER_BR;
while ( ( block = iterator.getNextParagraph( enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' ) ) )
switchDir( block, dir, editor, database );
}
CKEDITOR.dom.element.clearAllMarkers( database );
editor.forceNextSelectionCheck();
// Restore selection position.
selection.selectBookmarks( bookmarks );
editor.focus();
}
};
}
CKEDITOR.plugins.add( 'bidi',
{
requires : [ 'styles', 'button' ],
init : function( editor )
{
// All buttons use the same code to register. So, to avoid
// duplications, let's use this tool function.
var addButtonCommand = function( buttonName, buttonLabel, commandName, commandExec )
{
editor.addCommand( commandName, new CKEDITOR.command( editor, { exec : commandExec }) );
editor.ui.addButton( buttonName,
{
label : buttonLabel,
command : commandName
});
};
var lang = editor.lang.bidi;
addButtonCommand( 'BidiLtr', lang.ltr, 'bidiltr', bidiCommand( 'ltr' ) );
addButtonCommand( 'BidiRtl', lang.rtl, 'bidirtl', bidiCommand( 'rtl' ) );
editor.on( 'selectionChange', onSelectionChange );
editor.on( 'contentDom', function()
{
editor.document.on( 'dirChanged', function( evt )
{
editor.fire( 'dirChanged',
{
node : evt.data,
dir : evt.data.getDirection( 1 )
} );
});
});
}
});
// If the element direction changed, we need to switch the margins of
// the element and all its children, so it will get really reflected
// like a mirror. (#5910)
function isOffline( el )
{
var html = el.getDocument().getBody().getParent();
while ( el )
{
if ( el.equals( html ) )
return false;
el = el.getParent();
}
return true;
}
function dirChangeNotifier( org )
{
var isAttribute = org == elementProto.setAttribute,
isRemoveAttribute = org == elementProto.removeAttribute,
dirStyleRegexp = /\bdirection\s*:\s*(.*?)\s*(:?$|;)/;
return function( name, val )
{
if ( !this.getDocument().equals( CKEDITOR.document ) )
{
var orgDir;
if ( ( name == ( isAttribute || isRemoveAttribute ? 'dir' : 'direction' ) ||
name == 'style' && ( isRemoveAttribute || dirStyleRegexp.test( val ) ) ) && !isOffline( this ) )
{
orgDir = this.getDirection( 1 );
var retval = org.apply( this, arguments );
if ( orgDir != this.getDirection( 1 ) )
{
this.getDocument().fire( 'dirChanged', this );
return retval;
}
}
}
return org.apply( this, arguments );
};
}
var elementProto = CKEDITOR.dom.element.prototype,
methods = [ 'setStyle', 'removeStyle', 'setAttribute', 'removeAttribute' ];
for ( var i = 0; i < methods.length; i++ )
elementProto[ methods[ i ] ] = CKEDITOR.tools.override( elementProto[ methods [ i ] ], dirChangeNotifier );
})();
/**
* Fired when the language direction of an element is changed
* @name CKEDITOR.editor#dirChanged
* @event
* @param {CKEDITOR.editor} editor This editor instance.
* @param {Object} eventData.node The element that is being changed.
* @param {String} eventData.dir The new direction.
*/
/**
* Fired when the language direction in the specific cursor position is changed
* @name CKEDITOR.editor#contentDirChanged
* @event
* @param {String} eventData The direction in the current position.
*/