LCOV - code coverage report
Current view: directory - editor/libeditor/base - InsertTextTxn.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 81 2 2.5 %
Date: 2012-06-02 Functions: 16 2 12.5 %

       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 "InsertTextTxn.h"
      39                 : #include "nsIDOMCharacterData.h"
      40                 : #include "nsISelection.h"
      41                 : #include "EditAggregateTxn.h"
      42                 : 
      43                 : #ifdef NS_DEBUG
      44                 : static bool gNoisy = false;
      45                 : #endif
      46                 : 
      47               0 : InsertTextTxn::InsertTextTxn()
      48               0 :   : EditTxn()
      49                 : {
      50               0 : }
      51                 : 
      52            1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(InsertTextTxn)
      53                 : 
      54               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(InsertTextTxn, EditTxn)
      55               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mElement)
      56               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
      57                 : 
      58               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(InsertTextTxn, EditTxn)
      59               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mElement)
      60               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
      61                 : 
      62               0 : NS_IMPL_ADDREF_INHERITED(InsertTextTxn, EditTxn)
      63               0 : NS_IMPL_RELEASE_INHERITED(InsertTextTxn, EditTxn)
      64               0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(InsertTextTxn)
      65               0 :   if (aIID.Equals(InsertTextTxn::GetCID())) {
      66               0 :     *aInstancePtr = (void*)(InsertTextTxn*)this;
      67               0 :     NS_ADDREF_THIS();
      68               0 :     return NS_OK;
      69                 :   } else
      70               0 : NS_INTERFACE_MAP_END_INHERITING(EditTxn)
      71                 : 
      72               0 : NS_IMETHODIMP InsertTextTxn::Init(nsIDOMCharacterData *aElement,
      73                 :                                   PRUint32             aOffset,
      74                 :                                   const nsAString     &aStringToInsert,
      75                 :                                   nsIEditor           *aEditor)
      76                 : {
      77                 : #if 0
      78                 :       nsAutoString text;
      79                 :       aElement->GetData(text);
      80                 :       printf("InsertTextTxn: Offset to insert at = %d. Text of the node to insert into:\n", aOffset);
      81                 :       wprintf(text.get());
      82                 :       printf("\n");
      83                 : #endif
      84                 : 
      85               0 :   NS_ASSERTION(aElement && aEditor, "bad args");
      86               0 :   NS_ENSURE_TRUE(aElement && aEditor, NS_ERROR_NULL_POINTER);
      87                 : 
      88               0 :   mElement = do_QueryInterface(aElement);
      89               0 :   mOffset = aOffset;
      90               0 :   mStringToInsert = aStringToInsert;
      91               0 :   mEditor = aEditor;
      92               0 :   return NS_OK;
      93                 : }
      94                 : 
      95               0 : NS_IMETHODIMP InsertTextTxn::DoTransaction(void)
      96                 : {
      97                 : #ifdef NS_DEBUG
      98               0 :   if (gNoisy)
      99                 :   {
     100                 :     printf("Do Insert Text element = %p\n",
     101               0 :            static_cast<void*>(mElement.get()));
     102                 :   }
     103                 : #endif
     104                 : 
     105               0 :   NS_ASSERTION(mElement && mEditor, "bad state");
     106               0 :   if (!mElement || !mEditor) { return NS_ERROR_NOT_INITIALIZED; }
     107                 : 
     108               0 :   nsresult result = mElement->InsertData(mOffset, mStringToInsert);
     109               0 :   NS_ENSURE_SUCCESS(result, result);
     110                 : 
     111                 :   // only set selection to insertion point if editor gives permission
     112                 :   bool bAdjustSelection;
     113               0 :   mEditor->ShouldTxnSetSelection(&bAdjustSelection);
     114               0 :   if (bAdjustSelection)
     115                 :   {
     116               0 :     nsCOMPtr<nsISelection> selection;
     117               0 :     result = mEditor->GetSelection(getter_AddRefs(selection));
     118               0 :     NS_ENSURE_SUCCESS(result, result);
     119               0 :     NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
     120               0 :     result = selection->Collapse(mElement, mOffset+mStringToInsert.Length());
     121               0 :     NS_ASSERTION((NS_SUCCEEDED(result)), "selection could not be collapsed after insert.");
     122                 :   }
     123                 :   else
     124                 :   {
     125                 :     // do nothing - dom range gravity will adjust selection
     126                 :   }
     127                 : 
     128               0 :   return result;
     129                 : }
     130                 : 
     131               0 : NS_IMETHODIMP InsertTextTxn::UndoTransaction(void)
     132                 : {
     133                 : #ifdef NS_DEBUG
     134               0 :   if (gNoisy)
     135                 :   {
     136                 :     printf("Undo Insert Text element = %p\n",
     137               0 :            static_cast<void*>(mElement.get()));
     138                 :   }
     139                 : #endif
     140                 : 
     141               0 :   NS_ASSERTION(mElement && mEditor, "bad state");
     142               0 :   if (!mElement || !mEditor) { return NS_ERROR_NOT_INITIALIZED; }
     143                 : 
     144               0 :   PRUint32 length = mStringToInsert.Length();
     145               0 :   return mElement->DeleteData(mOffset, length);
     146                 : }
     147                 : 
     148               0 : NS_IMETHODIMP InsertTextTxn::Merge(nsITransaction *aTransaction, bool *aDidMerge)
     149                 : {
     150                 :   // set out param default value
     151               0 :   if (aDidMerge)
     152               0 :     *aDidMerge = false;
     153               0 :   nsresult result = NS_OK;
     154               0 :   if (aDidMerge && aTransaction)
     155                 :   {
     156                 :     // if aTransaction is a InsertTextTxn, and if the selection hasn't changed, 
     157                 :     // then absorb it
     158               0 :     InsertTextTxn *otherInsTxn = nsnull;
     159               0 :     aTransaction->QueryInterface(InsertTextTxn::GetCID(), (void **)&otherInsTxn);
     160               0 :     if (otherInsTxn)
     161                 :     {
     162               0 :       if (IsSequentialInsert(otherInsTxn))
     163                 :       {
     164               0 :         nsAutoString otherData;
     165               0 :         otherInsTxn->GetData(otherData);
     166               0 :         mStringToInsert += otherData;
     167               0 :         *aDidMerge = true;
     168                 : #ifdef NS_DEBUG
     169               0 :         if (gNoisy)
     170                 :         {
     171                 :           printf("InsertTextTxn assimilated %p\n",
     172               0 :                  static_cast<void*>(aTransaction));
     173                 :         }
     174                 : #endif
     175                 :       }
     176               0 :       NS_RELEASE(otherInsTxn);
     177                 :     }
     178                 :   }
     179               0 :   return result;
     180                 : }
     181                 : 
     182               0 : NS_IMETHODIMP InsertTextTxn::GetTxnDescription(nsAString& aString)
     183                 : {
     184               0 :   aString.AssignLiteral("InsertTextTxn: ");
     185               0 :   aString += mStringToInsert;
     186               0 :   return NS_OK;
     187                 : }
     188                 : 
     189                 : /* ============ protected methods ================== */
     190                 : 
     191               0 : NS_IMETHODIMP InsertTextTxn::GetData(nsString& aResult)
     192                 : {
     193               0 :   aResult = mStringToInsert;
     194               0 :   return NS_OK;
     195                 : }
     196                 : 
     197               0 : bool InsertTextTxn::IsSequentialInsert(InsertTextTxn *aOtherTxn)
     198                 : {
     199               0 :   NS_ASSERTION(aOtherTxn, "null param");
     200               0 :   if (aOtherTxn && aOtherTxn->mElement == mElement)
     201                 :   {
     202                 :     // here, we need to compare offsets.
     203               0 :     PRInt32 length = mStringToInsert.Length();
     204               0 :     if (aOtherTxn->mOffset == (mOffset + length))
     205               0 :       return true;
     206                 :   }
     207               0 :   return false;
     208            4392 : }

Generated by: LCOV version 1.7