author dolske@mozilla.com
Wed, 01 Aug 2007 18:04:04 -0700
changeset 4126 66a5c7bce7ee86a820d3c0d54fa07cb719be751c
parent 1 9b2a99adc05e53cd4010de512f50118594756650
child 20532 34967ab14be8eebb21c72eab7a790252df73ff2b
permissions -rw-r--r--
wallpaper part 2 for bug 390451 - Remembered passwords lost when changing Master Password. r=vlad, a=damons.

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
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 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is mozilla.org code.
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * ***** END LICENSE BLOCK ***** */

#include "nsTextEditRules.h"
#include "nsCOMPtr.h"
#include "nsIDOMNode.h"
#include "nsIContent.h"
#include "nsIPresShell.h"
#include "nsPresContext.h"
#include "nsIFrame.h"
#include "nsISelectionPrivate.h"
#include "nsFrameSelection.h"

// Test for distance between caret and text that will be deleted
nsTextEditRules::CheckBidiLevelForDeletion(nsISelection         *aSelection,
                                           nsIDOMNode           *aSelNode, 
                                           PRInt32               aSelOffset, 
                                           nsIEditor::EDirection aAction,
                                           PRBool               *aCancel)
  *aCancel = PR_FALSE;

  nsCOMPtr<nsIPresShell> shell;
  nsresult res = mEditor->GetPresShell(getter_AddRefs(shell));
  if (NS_FAILED(res))
    return res;
  if (!shell)
  nsPresContext *context = shell->GetPresContext();
  if (!context)
  if (!context->BidiEnabled())
    return NS_OK;
  nsCOMPtr<nsIContent> content = do_QueryInterface(aSelNode);
  if (!content)

  PRUint8 levelBefore;
  PRUint8 levelAfter;

  nsCOMPtr<nsISelectionPrivate> privateSelection(do_QueryInterface(aSelection));
  if (!privateSelection)
  nsCOMPtr<nsFrameSelection> frameSelection;
  if (!frameSelection)
  nsPrevNextBidiLevels levels = frameSelection->
    GetPrevNextBidiLevels(content, aSelOffset, PR_TRUE);
  levelBefore = levels.mLevelBefore;
  levelAfter = levels.mLevelAfter;

  PRUint8 currentCaretLevel = frameSelection->GetCaretBidiLevel();

  PRUint8 levelOfDeletion;
  levelOfDeletion = (nsIEditor::eNext==aAction) ? levelAfter : levelBefore;

  if (currentCaretLevel == levelOfDeletion)
    ; // perform the deletion
    if (mDeleteBidiImmediately || levelBefore == levelAfter)
      ; // perform the deletion
      *aCancel = PR_TRUE;

    // Set the bidi level of the caret to that of the
    // character that will be (or would have been) deleted
  return NS_OK;