Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=2 sw=2 et tw=78: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "SetTextTransaction.h"
       8             : 
       9             : #include "mozilla/DebugOnly.h"          // DebugOnly
      10             : #include "mozilla/EditorBase.h"         // mEditorBase
      11             : #include "mozilla/SelectionState.h"     // RangeUpdater
      12             : #include "mozilla/dom/Selection.h"      // Selection local var
      13             : #include "mozilla/dom/Text.h"           // mTextNode
      14             : #include "nsAString.h"                  // nsAString parameter
      15             : #include "nsDebug.h"                    // for NS_ASSERTION, etc.
      16             : #include "nsError.h"                    // for NS_OK, etc.
      17             : #include "nsQueryObject.h"              // for do_QueryObject
      18             : 
      19             : namespace mozilla {
      20             : 
      21             : using namespace dom;
      22             : 
      23           0 : SetTextTransaction::SetTextTransaction(Text& aTextNode,
      24             :                                        const nsAString& aStringToSet,
      25             :                                        EditorBase& aEditorBase,
      26           0 :                                        RangeUpdater* aRangeUpdater)
      27             :   : mTextNode(&aTextNode)
      28             :   , mStringToSet(aStringToSet)
      29             :   , mEditorBase(&aEditorBase)
      30           0 :   , mRangeUpdater(aRangeUpdater)
      31             : {
      32           0 : }
      33             : 
      34           0 : SetTextTransaction::~SetTextTransaction()
      35             : {
      36           0 : }
      37             : 
      38           0 : NS_IMPL_CYCLE_COLLECTION_INHERITED(SetTextTransaction, EditTransactionBase,
      39             :                                    mEditorBase,
      40             :                                    mTextNode)
      41             : 
      42           0 : NS_IMPL_ADDREF_INHERITED(SetTextTransaction, EditTransactionBase)
      43           0 : NS_IMPL_RELEASE_INHERITED(SetTextTransaction, EditTransactionBase)
      44           0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SetTextTransaction)
      45           0 :   if (aIID.Equals(NS_GET_IID(SetTextTransaction))) {
      46           0 :     foundInterface = static_cast<nsITransaction*>(this);
      47             :   } else
      48           0 : NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
      49             : 
      50             : 
      51             : NS_IMETHODIMP
      52           0 : SetTextTransaction::DoTransaction()
      53             : {
      54           0 :   if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mTextNode)) {
      55           0 :     return NS_ERROR_NOT_AVAILABLE;
      56             :   }
      57             : 
      58           0 :   nsresult rv = mTextNode->GetData(mPreviousData);
      59           0 :   if (NS_WARN_IF(NS_FAILED(rv))) {
      60           0 :     return rv;
      61             :   }
      62             : 
      63           0 :   rv = mTextNode->SetData(mStringToSet);
      64           0 :   if (NS_WARN_IF(NS_FAILED(rv))) {
      65           0 :     return rv;
      66             :   }
      67             : 
      68             :   // Only set selection to insertion point if editor gives permission
      69           0 :   if (mEditorBase->GetShouldTxnSetSelection()) {
      70           0 :     RefPtr<Selection> selection = mEditorBase->GetSelection();
      71           0 :     if (NS_WARN_IF(NS_FAILED(rv))) {
      72           0 :       return NS_ERROR_NULL_POINTER;
      73             :     }
      74             :     DebugOnly<nsresult> rv =
      75           0 :       selection->Collapse(mTextNode, mStringToSet.Length());
      76           0 :     NS_ASSERTION(NS_SUCCEEDED(rv),
      77             :                  "Selection could not be collapsed after insert");
      78             :   }
      79           0 :   mRangeUpdater->SelAdjDeleteText(mTextNode, 0, mPreviousData.Length());
      80           0 :   mRangeUpdater->SelAdjInsertText(*mTextNode, 0, mStringToSet);
      81             : 
      82           0 :   return NS_OK;
      83             : }
      84             : 
      85             : NS_IMETHODIMP
      86           0 : SetTextTransaction::UndoTransaction()
      87             : {
      88           0 :   return mTextNode->SetData(mPreviousData);
      89             : }
      90             : 
      91             : NS_IMETHODIMP
      92           0 : SetTextTransaction::Merge(nsITransaction* aTransaction,
      93             :                           bool* aDidMerge)
      94             : {
      95             :   // Set out param default value
      96           0 :   *aDidMerge = false;
      97             : 
      98           0 :   return NS_OK;
      99             : }
     100             : 
     101             : NS_IMETHODIMP
     102           0 : SetTextTransaction::GetTxnDescription(nsAString& aString)
     103             : {
     104           0 :   aString.AssignLiteral("SetTextTransaction: ");
     105           0 :   aString += mStringToSet;
     106           0 :   return NS_OK;
     107             : }
     108             : 
     109             : } // namespace mozilla