LCOV - code coverage report
Current view: directory - editor/libeditor/base - PlaceholderTxn.h (source / functions) Found Hit Coverage
Test: app.info Lines: 2 1 50.0 %
Date: 2012-06-02 Functions: 4 1 25.0 %

       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) 1998-1999
      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                 : #ifndef AggregatePlaceholderTxn_h__
      39                 : #define AggregatePlaceholderTxn_h__
      40                 : 
      41                 : #include "EditAggregateTxn.h"
      42                 : #include "nsEditorUtils.h"
      43                 : #include "nsIAbsorbingTransaction.h"
      44                 : #include "nsIDOMNode.h"
      45                 : #include "nsCOMPtr.h"
      46                 : #include "nsWeakPtr.h"
      47                 : #include "nsWeakReference.h"
      48                 : #include "nsAutoPtr.h"
      49                 : 
      50                 : class nsHTMLEditor;
      51                 : class IMETextTxn;
      52                 : 
      53                 : /**
      54                 :  * An aggregate transaction that knows how to absorb all subsequent
      55                 :  * transactions with the same name.  This transaction does not "Do" anything.
      56                 :  * But it absorbs other transactions via merge, and can undo/redo the
      57                 :  * transactions it has absorbed.
      58                 :  */
      59                 :  
      60                 : class PlaceholderTxn : public EditAggregateTxn, 
      61                 :                        public nsIAbsorbingTransaction, 
      62                 :                        public nsSupportsWeakReference
      63               0 : {
      64                 : public:
      65                 :   NS_DECL_ISUPPORTS_INHERITED  
      66                 :   
      67                 :   PlaceholderTxn();
      68                 : 
      69            1464 :   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(PlaceholderTxn, EditAggregateTxn)
      70                 : // ------------ EditAggregateTxn -----------------------
      71                 : 
      72                 :   NS_DECL_EDITTXN
      73                 : 
      74                 :   NS_IMETHOD RedoTransaction();
      75                 :   NS_IMETHOD Merge(nsITransaction *aTransaction, bool *aDidMerge);
      76                 : 
      77                 : // ------------ nsIAbsorbingTransaction -----------------------
      78                 : 
      79                 :   NS_IMETHOD Init(nsIAtom *aName, nsSelectionState *aSelState, nsIEditor *aEditor);
      80                 :   
      81                 :   NS_IMETHOD GetTxnName(nsIAtom **aName);
      82                 :   
      83                 :   NS_IMETHOD StartSelectionEquals(nsSelectionState *aSelState, bool *aResult);
      84                 : 
      85                 :   NS_IMETHOD EndPlaceHolderBatch();
      86                 : 
      87                 :   NS_IMETHOD ForwardEndBatchTo(nsIAbsorbingTransaction *aForwardingAddress);
      88                 : 
      89                 :   NS_IMETHOD Commit();
      90                 : 
      91                 :   NS_IMETHOD RememberEndingSelection();
      92                 : 
      93                 : protected:
      94                 : 
      95                 :   /** the presentation shell, which we'll need to get the selection */
      96                 :   bool        mAbsorb;          // do we auto absorb any and all transaction?
      97                 :   nsWeakPtr   mForwarding;
      98                 :   IMETextTxn *mIMETextTxn;      // first IME txn in this placeholder - used for IME merging
      99                 :                                 // non-owning for now - can't nsCOMPtr it due to broken transaction interfaces
     100                 :   bool        mCommitted;       // do we stop auto absorbing any matching placeholder txns?
     101                 :   // these next two members store the state of the selection in a safe way. 
     102                 :   // selection at the start of the txn is stored, as is the selection at the end.
     103                 :   // This is so that UndoTransaction() and RedoTransaction() can restore the
     104                 :   // selection properly.
     105                 :   nsAutoPtr<nsSelectionState> mStartSel; // use a pointer because this is constructed before we exist
     106                 :   nsSelectionState  mEndSel;
     107                 :   nsIEditor*        mEditor;   /** the editor for this transaction */
     108                 : };
     109                 : 
     110                 : 
     111                 : #endif

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