_source/plugins/bidi/plugin.js

   1 /*\r
   2 Copyright (c) 2003-2010, CKSource - Frederico Knabben. All rights reserved.\r
   3 For licensing, see LICENSE.html or http://ckeditor.com/license\r
   4 */\r
   5 \r
   6 (function()\r
   7 {\r
   8         var guardElements = { table:1, ul:1, ol:1, blockquote:1, div:1 };\r
   9         var directSelectionGuardElements = {};\r
  10         CKEDITOR.tools.extend( directSelectionGuardElements, guardElements, { tr:1, p:1, div:1, li:1 } );\r
  11 \r
  12         function onSelectionChange( evt )\r
  13         {\r
  14                 evt.editor.getCommand( 'bidirtl' ).setState( getState( evt.editor, evt.data.path, 'rtl' ) );\r
  15                 evt.editor.getCommand( 'bidiltr' ).setState( getState( evt.editor, evt.data.path, 'ltr' ) );\r
  16         }\r
  17 \r
  18         function getState( editor, path, dir )\r
  19         {\r
  20                 var useComputedState = editor.config.useComputedState,\r
  21                         selectedElement;\r
  22 \r
  23                 useComputedState = useComputedState === undefined || useComputedState;\r
  24 \r
  25                 if ( useComputedState )\r
  26                 {\r
  27                         var selection = editor.getSelection(),\r
  28                                 ranges = selection.getRanges();\r
  29 \r
  30                         selectedElement = ranges && ranges[ 0 ].getEnclosedNode();\r
  31 \r
  32                         // If this is not our element of interest, apply to fully selected elements from guardElements.\r
  33                         if ( !selectedElement || selectedElement\r
  34                                         && !( selectedElement.type == CKEDITOR.NODE_ELEMENT && selectedElement.getName() in directSelectionGuardElements )\r
  35                                 )\r
  36                                 selectedElement = getFullySelected( selection, guardElements );\r
  37                 }\r
  38 \r
  39                 selectedElement = selectedElement || path.block || path.blockLimit;\r
  40 \r
  41                 if ( !selectedElement || selectedElement.getName() == 'body' )\r
  42                         return CKEDITOR.TRISTATE_OFF;\r
  43 \r
  44                 selectedElement = useComputedState ?\r
  45                         selectedElement.getComputedStyle( 'direction' ) :\r
  46                         selectedElement.getStyle( 'direction' ) || selectedElement.getAttribute( 'dir' );\r
  47 \r
  48                 return ( selectedElement == dir ) ?\r
  49                         CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF;\r
  50         }\r
  51 \r
  52         function switchDir( element, dir, editor )\r
  53         {\r
  54                 var dirBefore = element.getComputedStyle( 'direction' ),\r
  55                         currentDir = element.getStyle( 'direction' ) || element.getAttribute( 'dir' ) || '';\r
  56 \r
  57                 element.removeStyle( 'direction' );\r
  58 \r
  59                 if ( currentDir.toLowerCase() == dir )\r
  60                         element.removeAttribute( 'dir' );\r
  61                 else\r
  62                         element.setAttribute( 'dir', dir );\r
  63 \r
  64                 // If the element direction changed, we need to switch the margins of\r
  65                 // the element and all its children, so it will get really reflected\r
  66                 // like a mirror. (#5910)\r
  67                 var dirAfter = element.getComputedStyle( 'direction' );\r
  68                 if ( dirAfter != dirBefore )\r
  69                 {\r
  70                         var range = new CKEDITOR.dom.range( element.getDocument() );\r
  71                         range.setStartBefore( element );\r
  72                         range.setEndAfter( element );\r
  73 \r
  74                         var walker = new CKEDITOR.dom.walker( range );\r
  75 \r
  76                         var node;\r
  77                         while ( ( node = walker.next() ) )\r
  78                         {\r
  79                                 if ( node.type == CKEDITOR.NODE_ELEMENT )\r
  80                                 {\r
  81                                         // A child with dir defined is to be ignored.\r
  82                                         if ( !node.equals( element ) && node.hasAttribute( 'dir' ) )\r
  83                                         {\r
  84                                                 range.setStartAfter( node );\r
  85                                                 walker = new CKEDITOR.dom.walker( range );\r
  86                                                 continue;\r
  87                                         }\r
  88 \r
  89                                         // Switch the margins.\r
  90                                         var marginLeft = node.getStyle( 'margin-right' ),\r
  91                                                 marginRight = node.getStyle( 'margin-left' );\r
  92 \r
  93                                         marginLeft ? node.setStyle( 'margin-left', marginLeft ) : node.removeStyle( 'margin-left' );\r
  94                                         marginRight ? node.setStyle( 'margin-right', marginRight ) : node.removeStyle( 'margin-right' );\r
  95                                 }\r
  96                         }\r
  97                 }\r
  98 \r
  99                 editor.forceNextSelectionCheck();\r
 100         }\r
 101 \r
 102         function getFullySelected( selection, elements )\r
 103         {\r
 104                 var selectedElement = selection.getCommonAncestor();\r
 105                 while( selectedElement.type == CKEDITOR.NODE_ELEMENT\r
 106                                 && !( selectedElement.getName() in elements )\r
 107                                 && selectedElement.getParent().getChildCount() == 1\r
 108                         )\r
 109                         selectedElement = selectedElement.getParent();\r
 110 \r
 111                 return selectedElement.type == CKEDITOR.NODE_ELEMENT\r
 112                         && ( selectedElement.getName() in elements )\r
 113                         && selectedElement;\r
 114         }\r
 115 \r
 116         function bidiCommand( dir )\r
 117         {\r
 118                 return function( editor )\r
 119                 {\r
 120                         var selection = editor.getSelection(),\r
 121                                 enterMode = editor.config.enterMode,\r
 122                                 ranges = selection.getRanges();\r
 123 \r
 124                         if ( ranges && ranges.length )\r
 125                         {\r
 126                                 // Apply do directly selected elements from guardElements.\r
 127                                 var selectedElement = ranges[ 0 ].getEnclosedNode();\r
 128 \r
 129                                 // If this is not our element of interest, apply to fully selected elements from guardElements.\r
 130                                 if ( !selectedElement || selectedElement\r
 131                                                 && !( selectedElement.type == CKEDITOR.NODE_ELEMENT && selectedElement.getName() in directSelectionGuardElements )\r
 132                                         )\r
 133                                         selectedElement = getFullySelected( selection, guardElements );\r
 134 \r
 135                                 if ( selectedElement )\r
 136                                 {\r
 137                                         if ( !selectedElement.isReadOnly() )\r
 138                                                 switchDir( selectedElement, dir, editor );\r
 139                                 }\r
 140                                 else\r
 141                                 {\r
 142                                         // Creates bookmarks for selection, as we may split some blocks.\r
 143                                         var bookmarks = selection.createBookmarks();\r
 144 \r
 145                                         var iterator,\r
 146                                                 block;\r
 147 \r
 148                                         for ( var i = ranges.length - 1 ; i >= 0 ; i-- )\r
 149                                         {\r
 150                                                 // Array of elements processed as guardElements.\r
 151                                                 var processedElements = [];\r
 152                                                 // Walker searching for guardElements.\r
 153                                                 var walker = new CKEDITOR.dom.walker( ranges[ i ] );\r
 154                                                 walker.evaluator = function( node ){\r
 155                                                         return node.type == CKEDITOR.NODE_ELEMENT\r
 156                                                                 && node.getName() in guardElements\r
 157                                                                 && !( node.getName() == ( enterMode == CKEDITOR.ENTER_P ) ? 'p' : 'div'\r
 158                                                                         && node.getParent().type == CKEDITOR.NODE_ELEMENT\r
 159                                                                         && node.getParent().getName() == 'blockquote'\r
 160                                                                 );\r
 161                                                 };\r
 162 \r
 163                                                 while ( ( block = walker.next() ) )\r
 164                                                 {\r
 165                                                         switchDir( block, dir, editor );\r
 166                                                         processedElements.push( block );\r
 167                                                 }\r
 168 \r
 169                                                 iterator = ranges[ i ].createIterator();\r
 170                                                 iterator.enlargeBr = enterMode != CKEDITOR.ENTER_BR;\r
 171 \r
 172                                                 while ( ( block = iterator.getNextParagraph( enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' ) ) )\r
 173                                                 {\r
 174                                                         if ( block.isReadOnly() )\r
 175                                                                 continue;\r
 176 \r
 177                                                         var _break = 0;\r
 178 \r
 179                                                         // Check if block have been already processed by the walker above.\r
 180                                                         for ( var ii = 0; ii < processedElements.length; ii++ )\r
 181                                                         {\r
 182                                                                 var parent = block.getParent();\r
 183 \r
 184                                                                 while( parent && parent.getName() != 'body' )\r
 185                                                                 {\r
 186                                                                         if ( ( parent.$.isSameNode && parent.$.isSameNode( processedElements[ ii ].$ ) )\r
 187                                                                                         || parent.$ == processedElements[ ii ].$ )\r
 188                                                                         {\r
 189                                                                                 _break = 1;\r
 190                                                                                 break;\r
 191                                                                         }\r
 192                                                                         parent = parent.getParent();\r
 193                                                                 }\r
 194 \r
 195                                                                 if ( _break )\r
 196                                                                         break;\r
 197                                                         }\r
 198 \r
 199                                                         if ( !_break )\r
 200                                                         {\r
 201                                                                 switchDir( block, dir, editor );\r
 202                                                         }\r
 203                                                 }\r
 204                                         }\r
 205 \r
 206                                         editor.forceNextSelectionCheck();\r
 207                                         // Restore selection position.\r
 208                                         selection.selectBookmarks( bookmarks );\r
 209                                 }\r
 210 \r
 211                                 editor.focus();\r
 212                         }\r
 213                 };\r
 214         }\r
 215 \r
 216         CKEDITOR.plugins.add( 'bidi',\r
 217         {\r
 218                 requires : [ 'styles', 'button' ],\r
 219 \r
 220                 init : function( editor )\r
 221                 {\r
 222                         // All buttons use the same code to register. So, to avoid\r
 223                         // duplications, let's use this tool function.\r
 224                         var addButtonCommand = function( buttonName, buttonLabel, commandName, commandExec )\r
 225                         {\r
 226                                 editor.addCommand( commandName, new CKEDITOR.command( editor, { exec : commandExec }) );\r
 227 \r
 228                                 editor.ui.addButton( buttonName,\r
 229                                         {\r
 230                                                 label : buttonLabel,\r
 231                                                 command : commandName\r
 232                                         });\r
 233                         };\r
 234 \r
 235                         var lang = editor.lang.bidi;\r
 236 \r
 237                         addButtonCommand( 'BidiLtr', lang.ltr, 'bidiltr', bidiCommand( 'ltr' ) );\r
 238                         addButtonCommand( 'BidiRtl', lang.rtl, 'bidirtl', bidiCommand( 'rtl' ) );\r
 239 \r
 240                         editor.on( 'selectionChange', onSelectionChange );\r
 241                 }\r
 242         });\r
 243 \r
 244 })();\r