Line data    Source code

       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 DeleteNodeTransaction_h
       7             : #define DeleteNodeTransaction_h
       8             : 
       9             : #include "mozilla/EditTransactionBase.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             : namespace mozilla {
      18             : 
      19             : class EditorBase;
      20             : class RangeUpdater;
      21             : 
      22             : /**
      23             :  * A transaction that deletes a single element
      24             :  */
      25             : class DeleteNodeTransaction final : public EditTransactionBase
      26             : {
      27             : public:
      28             :   DeleteNodeTransaction(EditorBase& aEditorBase, nsINode& aNodeToDelete,
      29             :                         RangeUpdater* aRangeUpdater);
      30             : 
      31             :   /**
      32             :    * CanDoIt() returns true if there are enough members and can modify the
      33             :    * parent.  Otherwise, false.
      34             :    */
      35             :   bool CanDoIt() const;
      36             : 
      37             :   NS_DECL_ISUPPORTS_INHERITED
      38           4 :   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteNodeTransaction,
      39             :                                            EditTransactionBase)
      40             : 
      41             :   NS_DECL_EDITTRANSACTIONBASE
      42             : 
      43             :   NS_IMETHOD RedoTransaction() override;
      44             : 
      45             : protected:
      46             :   virtual ~DeleteNodeTransaction();
      47             : 
      48             :   // The editor for this transaction.
      49             :   RefPtr<EditorBase> mEditorBase;
      50             : 
      51             :   // The element to delete.
      52             :   nsCOMPtr<nsINode> mNodeToDelete;
      53             : 
      54             :   // Parent of node to delete.
      55             :   nsCOMPtr<nsINode> mParentNode;
      56             : 
      57             :   // Next sibling to remember for undo/redo purposes.
      58             :   nsCOMPtr<nsIContent> mRefNode;
      59             : 
      60             :   // Range updater object.
      61             :   RangeUpdater* mRangeUpdater;
      62             : };
      63             : 
      64             : } // namespace mozilla
      65             : 
      66             : #endif // #ifndef DeleteNodeTransaction_h