LCOV - code coverage report
Current view: directory - editor/libeditor/text - nsTextEditRulesBidi.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 27 0 0.0 %
Date: 2012-06-02 Functions: 1 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is mozilla.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "nsTextEditRules.h"
      39                 : #include "nsCOMPtr.h"
      40                 : #include "nsIDOMNode.h"
      41                 : #include "nsIContent.h"
      42                 : #include "nsIPresShell.h"
      43                 : #include "nsPresContext.h"
      44                 : #include "nsIFrame.h"
      45                 : #include "nsISelectionPrivate.h"
      46                 : #include "nsFrameSelection.h"
      47                 : 
      48                 : // Test for distance between caret and text that will be deleted
      49                 : nsresult
      50               0 : nsTextEditRules::CheckBidiLevelForDeletion(nsISelection         *aSelection,
      51                 :                                            nsIDOMNode           *aSelNode, 
      52                 :                                            PRInt32               aSelOffset, 
      53                 :                                            nsIEditor::EDirection aAction,
      54                 :                                            bool                 *aCancel)
      55                 : {
      56               0 :   NS_ENSURE_ARG_POINTER(aCancel);
      57               0 :   *aCancel = false;
      58                 : 
      59               0 :   nsCOMPtr<nsIPresShell> shell = mEditor->GetPresShell();
      60               0 :   NS_ENSURE_TRUE(shell, NS_ERROR_NOT_INITIALIZED);
      61                 :   
      62               0 :   nsPresContext *context = shell->GetPresContext();
      63               0 :   NS_ENSURE_TRUE(context, NS_ERROR_NULL_POINTER);
      64                 :   
      65               0 :   if (!context->BidiEnabled())
      66               0 :     return NS_OK;
      67                 :   
      68               0 :   nsCOMPtr<nsIContent> content = do_QueryInterface(aSelNode);
      69               0 :   NS_ENSURE_TRUE(content, NS_ERROR_NULL_POINTER);
      70                 : 
      71                 :   PRUint8 levelBefore;
      72                 :   PRUint8 levelAfter;
      73                 : 
      74               0 :   nsCOMPtr<nsISelectionPrivate> privateSelection(do_QueryInterface(aSelection));
      75               0 :   NS_ENSURE_TRUE(privateSelection, NS_ERROR_NULL_POINTER);
      76                 :   
      77               0 :   nsRefPtr<nsFrameSelection> frameSelection;
      78               0 :   privateSelection->GetFrameSelection(getter_AddRefs(frameSelection));
      79               0 :   NS_ENSURE_TRUE(frameSelection, NS_ERROR_NULL_POINTER);
      80                 :   
      81               0 :   nsPrevNextBidiLevels levels = frameSelection->
      82               0 :     GetPrevNextBidiLevels(content, aSelOffset, true);
      83                 :     
      84               0 :   levelBefore = levels.mLevelBefore;
      85               0 :   levelAfter = levels.mLevelAfter;
      86                 : 
      87               0 :   PRUint8 currentCaretLevel = frameSelection->GetCaretBidiLevel();
      88                 : 
      89                 :   PRUint8 levelOfDeletion;
      90                 :   levelOfDeletion =
      91                 :     (nsIEditor::eNext==aAction || nsIEditor::eNextWord==aAction) ?
      92               0 :     levelAfter : levelBefore;
      93                 : 
      94               0 :   if (currentCaretLevel == levelOfDeletion)
      95                 :     ; // perform the deletion
      96                 :   else
      97                 :   {
      98               0 :     if (mDeleteBidiImmediately || levelBefore == levelAfter)
      99                 :       ; // perform the deletion
     100                 :     else
     101               0 :       *aCancel = true;
     102                 : 
     103                 :     // Set the bidi level of the caret to that of the
     104                 :     // character that will be (or would have been) deleted
     105               0 :     frameSelection->SetCaretBidiLevel(levelOfDeletion);
     106                 :   }
     107               0 :   return NS_OK;
     108                 : }
     109                 : 

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