vanilla ckeditor-3.2.1

[ckeditor.git] / _source / core / dom / range.js

diff --git a/_source/core/dom/range.js b/_source/core/dom/range.js
index 8d30b4f..127f7aa 100644 (file)
--- a/_source/core/dom/range.js
+++ b/_source/core/dom/range.js
@@ -925,7 +925,7 @@ CKEDITOR.dom.range = function( document )
 \r
                                                                                siblingText = sibling.getText();\r
 \r
-                                                                               if ( !(/[^\s\ufeff]/).test( siblingText ) )     // Spaces + Zero Width No-Break Space (U+FEFF)\r
+                                                                               if ( (/[^\s\ufeff]/).test( siblingText ) )      // Spaces + Zero Width No-Break Space (U+FEFF)\r
                                                                                        sibling = null;\r
                                                                                else\r
                                                                                {\r
@@ -1084,7 +1084,7 @@ CKEDITOR.dom.range = function( document )
 \r
                                                                                siblingText = sibling.getText();\r
 \r
-                                                                               if ( !(/[^\s\ufeff]/).test( siblingText ) )\r
+                                                                               if ( (/[^\s\ufeff]/).test( siblingText ) )\r
                                                                                        sibling = null;\r
                                                                                else\r
                                                                                {\r
@@ -1236,6 +1236,100 @@ CKEDITOR.dom.range = function( document )
                },\r
 \r
                /**\r
+                *  Descrease the range to make sure that boundaries\r
+                *  always anchor beside text nodes or innermost element.\r
+                * @param {Number} mode  ( CKEDITOR.SHRINK_ELEMENT | CKEDITOR.SHRINK_TEXT ) The shrinking mode.\r
+                */\r
+               shrink : function( mode )\r
+               {\r
+                       // Unable to shrink a collapsed range.\r
+                       if ( !this.collapsed )\r
+                       {\r
+                               mode = mode || CKEDITOR.SHRINK_TEXT;\r
+\r
+                               var walkerRange = this.clone();\r
+\r
+                               var startContainer = this.startContainer,\r
+                                       endContainer = this.endContainer,\r
+                                       startOffset = this.startOffset,\r
+                                       endOffset = this.endOffset,\r
+                                       collapsed = this.collapsed;\r
+\r
+                               // Whether the start/end boundary is moveable.\r
+                               var moveStart = 1,\r
+                                               moveEnd = 1;\r
+\r
+                               if ( startContainer && startContainer.type == CKEDITOR.NODE_TEXT )\r
+                               {\r
+                                       if ( !startOffset )\r
+                                               walkerRange.setStartBefore( startContainer );\r
+                                       else if ( startOffset >= startContainer.getLength( ) )\r
+                                               walkerRange.setStartAfter( startContainer );\r
+                                       else\r
+                                       {\r
+                                               // Enlarge the range properly to avoid walker making\r
+                                               // DOM changes caused by triming the text nodes later.\r
+                                               walkerRange.setStartBefore( startContainer );\r
+                                               moveStart = 0;\r
+                                       }\r
+                               }\r
+\r
+                               if ( endContainer && endContainer.type == CKEDITOR.NODE_TEXT )\r
+                               {\r
+                                       if ( !endOffset )\r
+                                               walkerRange.setEndBefore( endContainer );\r
+                                       else if ( endOffset >= endContainer.getLength( ) )\r
+                                               walkerRange.setEndAfter( endContainer );\r
+                                       else\r
+                                       {\r
+                                               walkerRange.setEndAfter( endContainer );\r
+                                               moveEnd = 0;\r
+                                       }\r
+                               }\r
+\r
+                               var walker = new CKEDITOR.dom.walker( walkerRange );\r
+\r
+                               walker.evaluator = function( node )\r
+                               {\r
+                                       return node.type == ( mode == CKEDITOR.SHRINK_ELEMENT ?\r
+                                               CKEDITOR.NODE_ELEMENT : CKEDITOR.NODE_TEXT );\r
+                               };\r
+\r
+                               var currentElement;\r
+                               walker.guard = function( node, movingOut )\r
+                               {\r
+                                       // Stop when we're shrink in element mode while encountering a text node.\r
+                                       if ( mode == CKEDITOR.SHRINK_ELEMENT && node.type == CKEDITOR.NODE_TEXT )\r
+                                               return false;\r
+\r
+                                       // Stop when we've already walked "through" an element.\r
+                                       if ( movingOut && node.equals( currentElement ) )\r
+                                               return false;\r
+\r
+                                       if ( !movingOut && node.type == CKEDITOR.NODE_ELEMENT )\r
+                                               currentElement = node;\r
+\r
+                                       return true;\r
+                               };\r
+\r
+                               if ( moveStart )\r
+                               {\r
+                                       var textStart = walker[ mode == CKEDITOR.SHRINK_ELEMENT ? 'lastForward' : 'next']();\r
+                                       textStart && this.setStartBefore( textStart );\r
+                               }\r
+\r
+                               if ( moveEnd )\r
+                               {\r
+                                       walker.reset();\r
+                                       var textEnd = walker[ mode == CKEDITOR.SHRINK_ELEMENT ? 'lastBackward' : 'previous']();\r
+                                       textEnd && this.setEndAfter( textEnd );\r
+                               }\r
+\r
+                               return !!( moveStart || moveEnd );\r
+                       }\r
+               },\r
+\r
+               /**\r
                 * Inserts a node at the start of the range. The range will be expanded\r
                 * the contain the node.\r
                 */\r
@@ -1623,6 +1717,10 @@ CKEDITOR.dom.range = function( document )
                {\r
                        var isEditable;\r
 \r
+                       // Empty elements are rejected.\r
+                       if ( CKEDITOR.dtd.$empty[ el.getName() ] )\r
+                               return false;\r
+\r
                        while ( el && el.type == CKEDITOR.NODE_ELEMENT )\r
                        {\r
                                isEditable = el.isEditable();\r
@@ -1733,3 +1831,6 @@ CKEDITOR.ENLARGE_LIST_ITEM_CONTENTS = 3;
 CKEDITOR.START = 1;\r
 CKEDITOR.END = 2;\r
 CKEDITOR.STARTEND = 3;\r
+\r
+CKEDITOR.SHRINK_ELEMENT = 1;\r
+CKEDITOR.SHRINK_TEXT = 2;\r