LCOV - code coverage report
Current view: directory - editor/libeditor/base - JoinElementTxn.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 JoinElementTxn_h__
      39                 : #define JoinElementTxn_h__
      40                 : 
      41                 : #include "EditTxn.h"
      42                 : #include "nsIDOMNode.h"
      43                 : #include "nsCOMPtr.h"
      44                 : #include "nsIEditor.h"
      45                 : 
      46                 : class nsEditor;
      47                 : 
      48                 : /**
      49                 :  * A transaction that joins two elements E1 (left node) and E2 (right node)
      50                 :  * into a single node E.  
      51                 :  * The children of E are the children of E1 followed by the children of E2.
      52                 :  * After DoTransaction() and RedoTransaction(), E1 is removed from the content
      53                 :  * tree and E2 remains.
      54                 :  */
      55                 : class JoinElementTxn : public EditTxn
      56               0 : {
      57                 : public:
      58                 :   /** initialize the transaction
      59                 :     * @param aEditor    the provider of core editing operations
      60                 :     * @param aLeftNode  the first of two nodes to join
      61                 :     * @param aRightNode the second of two nodes to join
      62                 :     */
      63                 :   NS_IMETHOD Init(nsEditor   *aEditor,
      64                 :                   nsIDOMNode *aLeftNode,
      65                 :                   nsIDOMNode *aRightNode);
      66                 : 
      67                 :   JoinElementTxn();
      68                 : 
      69            1464 :   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(JoinElementTxn, EditTxn)
      70                 :   NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
      71                 : 
      72                 :   NS_DECL_EDITTXN
      73                 : 
      74                 : protected:
      75                 :   
      76                 :   /** the elements to operate upon.  
      77                 :     * After the merge, mRightNode remains and mLeftNode is removed from the content tree.
      78                 :     */
      79                 :   nsCOMPtr<nsIDOMNode> mLeftNode;
      80                 :   nsCOMPtr<nsIDOMNode> mRightNode;
      81                 : 
      82                 :   /** the offset into mNode where the children of mElement are split (for undo).<BR>
      83                 :     * mOffset is the index of the first child in the right node. 
      84                 :     * -1 means the left node had no children.
      85                 :     */
      86                 :   PRUint32  mOffset;
      87                 : 
      88                 :   /** the parent node containing mLeftNode and mRightNode */
      89                 :   nsCOMPtr<nsIDOMNode> mParent;
      90                 :   nsEditor*  mEditor;
      91                 : };
      92                 : 
      93                 : #endif

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