editor/libeditor/DeleteNodeTxn.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef DeleteNodeTxn_h__
   7 #define DeleteNodeTxn_h__
   8
   9 #include "EditTxn.h"
  10 #include "nsCOMPtr.h"
  11 #include "nsCycleCollectionParticipant.h"
  12 #include "nsIContent.h"
  13 #include "nsINode.h"
  14 #include "nsISupportsImpl.h"
  15 #include "nscore.h"
  16
  17 class nsEditor;
  18 class nsRangeUpdater;
  19
  20 /**
  21  * A transaction that deletes a single element
  22  */
  23 class DeleteNodeTxn : public EditTxn
  24 {
  25 public:
  26   /** initialize the transaction.
  27     * @param aElement the node to delete
  28     */
  29   nsresult Init(nsEditor* aEditor, nsINode* aNode,
  30                 nsRangeUpdater* aRangeUpdater);
  31
  32   DeleteNodeTxn();
  33
  34   NS_DECL_ISUPPORTS_INHERITED
  35   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteNodeTxn, EditTxn)
  36
  37   NS_DECL_EDITTXN
  38
  39   NS_IMETHOD RedoTransaction();
  40
  41 protected:
  42   virtual ~DeleteNodeTxn();
  43
  44   /** the element to delete */
  45   nsCOMPtr<nsINode> mNode;
  46
  47   /** parent of node to delete */
  48   nsCOMPtr<nsINode> mParent;
  49
  50   /** next sibling to remember for undo/redo purposes */
  51   nsCOMPtr<nsIContent> mRefNode;
  52
  53   /** the editor for this transaction */
  54   nsEditor* mEditor;
  55
  56   /** range updater object */
  57   nsRangeUpdater* mRangeUpdater;
  58 };
  59
  60 #endif