LCOV - code coverage report
Current view: directory - editor/libeditor/base - InsertElementTxn.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 72 2 2.8 %
Date: 2012-06-02 Functions: 13 2 15.4 %

       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) 1998-1999
      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 "InsertElementTxn.h"
      39                 : #include "nsISelection.h"
      40                 : #include "nsIContent.h"
      41                 : #include "nsIDOMNodeList.h"
      42                 : #include "nsReadableUtils.h"
      43                 : 
      44                 : #ifdef NS_DEBUG
      45                 : static bool gNoisy = false;
      46                 : #endif
      47                 : 
      48                 : 
      49               0 : InsertElementTxn::InsertElementTxn()
      50               0 :   : EditTxn()
      51                 : {
      52               0 : }
      53                 : 
      54            1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(InsertElementTxn)
      55                 : 
      56               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(InsertElementTxn, EditTxn)
      57               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mNode)
      58               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mParent)
      59               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
      60                 : 
      61               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(InsertElementTxn, EditTxn)
      62               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mNode)
      63               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mParent)
      64               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
      65                 : 
      66               0 : NS_IMPL_ADDREF_INHERITED(InsertElementTxn, EditTxn)
      67               0 : NS_IMPL_RELEASE_INHERITED(InsertElementTxn, EditTxn)
      68               0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(InsertElementTxn)
      69               0 : NS_INTERFACE_MAP_END_INHERITING(EditTxn)
      70                 : 
      71               0 : NS_IMETHODIMP InsertElementTxn::Init(nsIDOMNode *aNode,
      72                 :                                      nsIDOMNode *aParent,
      73                 :                                      PRInt32     aOffset,
      74                 :                                      nsIEditor  *aEditor)
      75                 : {
      76               0 :   NS_ASSERTION(aNode && aParent && aEditor, "bad arg");
      77               0 :   NS_ENSURE_TRUE(aNode && aParent && aEditor, NS_ERROR_NULL_POINTER);
      78                 : 
      79               0 :   mNode = do_QueryInterface(aNode);
      80               0 :   mParent = do_QueryInterface(aParent);
      81               0 :   mOffset = aOffset;
      82               0 :   mEditor = aEditor;
      83               0 :   NS_ENSURE_TRUE(mNode && mParent && mEditor, NS_ERROR_INVALID_ARG);
      84               0 :   return NS_OK;
      85                 : }
      86                 : 
      87                 : 
      88               0 : NS_IMETHODIMP InsertElementTxn::DoTransaction(void)
      89                 : {
      90                 : #ifdef NS_DEBUG
      91               0 :   if (gNoisy) 
      92                 :   { 
      93               0 :     nsCOMPtr<nsIContent>nodeAsContent = do_QueryInterface(mNode);
      94               0 :     nsCOMPtr<nsIContent>parentAsContent = do_QueryInterface(mParent);
      95               0 :     nsString namestr;
      96               0 :     mNode->GetNodeName(namestr);
      97               0 :     char* nodename = ToNewCString(namestr);
      98                 :     printf("%p Do Insert Element of %p <%s> into parent %p at offset %d\n", 
      99                 :            static_cast<void*>(this),
     100               0 :            static_cast<void*>(nodeAsContent.get()),
     101                 :            nodename,
     102               0 :            static_cast<void*>(parentAsContent.get()),
     103               0 :            mOffset); 
     104               0 :     nsMemory::Free(nodename);
     105                 :   }
     106                 : #endif
     107                 : 
     108               0 :   NS_ENSURE_TRUE(mNode && mParent, NS_ERROR_NOT_INITIALIZED);
     109                 : 
     110               0 :   nsCOMPtr<nsIDOMNodeList> childNodes;
     111               0 :   nsresult result = mParent->GetChildNodes(getter_AddRefs(childNodes));
     112               0 :   NS_ENSURE_SUCCESS(result, result);
     113               0 :   nsCOMPtr<nsIDOMNode>refNode;
     114               0 :   if (childNodes)
     115                 :   {
     116                 :     PRUint32 count;
     117               0 :     childNodes->GetLength(&count);
     118               0 :     if (mOffset>(PRInt32)count) mOffset = count;
     119                 :     // -1 is sentinel value meaning "append at end"
     120               0 :     if (mOffset == -1) mOffset = count;
     121               0 :     result = childNodes->Item(mOffset, getter_AddRefs(refNode));
     122               0 :     NS_ENSURE_SUCCESS(result, result); 
     123                 :     // note, it's ok for mRefNode to be null.  that means append
     124                 :   }
     125                 : 
     126               0 :   mEditor->MarkNodeDirty(mNode);
     127                 : 
     128               0 :   nsCOMPtr<nsIDOMNode> resultNode;
     129               0 :   result = mParent->InsertBefore(mNode, refNode, getter_AddRefs(resultNode));
     130               0 :   NS_ENSURE_SUCCESS(result, result);
     131               0 :   NS_ENSURE_TRUE(resultNode, NS_ERROR_NULL_POINTER);
     132                 : 
     133                 :   // only set selection to insertion point if editor gives permission
     134                 :   bool bAdjustSelection;
     135               0 :   mEditor->ShouldTxnSetSelection(&bAdjustSelection);
     136               0 :   if (bAdjustSelection)
     137                 :   {
     138               0 :     nsCOMPtr<nsISelection> selection;
     139               0 :     result = mEditor->GetSelection(getter_AddRefs(selection));
     140               0 :     NS_ENSURE_SUCCESS(result, result);
     141               0 :     NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
     142                 :     // place the selection just after the inserted element
     143               0 :     selection->Collapse(mParent, mOffset+1);
     144                 :   }
     145                 :   else
     146                 :   {
     147                 :     // do nothing - dom range gravity will adjust selection
     148                 :   }
     149               0 :   return result;
     150                 : }
     151                 : 
     152               0 : NS_IMETHODIMP InsertElementTxn::UndoTransaction(void)
     153                 : {
     154                 : #ifdef NS_DEBUG
     155               0 :   if (gNoisy)
     156                 :   {
     157                 :     printf("%p Undo Insert Element of %p into parent %p at offset %d\n",
     158                 :            static_cast<void*>(this),
     159               0 :            static_cast<void*>(mNode.get()),
     160               0 :            static_cast<void*>(mParent.get()),
     161               0 :            mOffset);
     162                 :   }
     163                 : #endif
     164                 : 
     165               0 :   NS_ENSURE_TRUE(mNode && mParent, NS_ERROR_NOT_INITIALIZED);
     166                 : 
     167               0 :   nsCOMPtr<nsIDOMNode> resultNode;
     168               0 :   return mParent->RemoveChild(mNode, getter_AddRefs(resultNode));
     169                 : }
     170                 : 
     171               0 : NS_IMETHODIMP InsertElementTxn::GetTxnDescription(nsAString& aString)
     172                 : {
     173               0 :   aString.AssignLiteral("InsertElementTxn");
     174               0 :   return NS_OK;
     175            4392 : }

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