1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/editor/libeditor/base/DeleteRangeTxn.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,75 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef DeleteRangeTxn_h__
1.10 +#define DeleteRangeTxn_h__
1.11 +
1.12 +#include "EditAggregateTxn.h"
1.13 +#include "EditTxn.h"
1.14 +#include "nsAutoPtr.h"
1.15 +#include "nsCycleCollectionParticipant.h"
1.16 +#include "nsID.h"
1.17 +#include "nsIEditor.h"
1.18 +#include "nsISupportsImpl.h"
1.19 +#include "nsRange.h"
1.20 +#include "nscore.h"
1.21 +
1.22 +class nsEditor;
1.23 +class nsINode;
1.24 +class nsRangeUpdater;
1.25 +
1.26 +/**
1.27 + * A transaction that deletes an entire range in the content tree
1.28 + */
1.29 +class DeleteRangeTxn : public EditAggregateTxn
1.30 +{
1.31 +public:
1.32 + /** initialize the transaction.
1.33 + * @param aEditor the object providing basic editing operations
1.34 + * @param aRange the range to delete
1.35 + */
1.36 + nsresult Init(nsEditor* aEditor,
1.37 + nsRange* aRange,
1.38 + nsRangeUpdater* aRangeUpdater);
1.39 +
1.40 + DeleteRangeTxn();
1.41 +
1.42 + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTxn, EditAggregateTxn)
1.43 + NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
1.44 +
1.45 + NS_DECL_EDITTXN
1.46 +
1.47 + NS_IMETHOD RedoTransaction();
1.48 +
1.49 + virtual void LastRelease()
1.50 + {
1.51 + mRange = nullptr;
1.52 + EditAggregateTxn::LastRelease();
1.53 + }
1.54 +protected:
1.55 +
1.56 + nsresult CreateTxnsToDeleteBetween(nsINode* aNode,
1.57 + int32_t aStartOffset,
1.58 + int32_t aEndOffset);
1.59 +
1.60 + nsresult CreateTxnsToDeleteNodesBetween();
1.61 +
1.62 + nsresult CreateTxnsToDeleteContent(nsINode* aParent,
1.63 + int32_t aOffset,
1.64 + nsIEditor::EDirection aAction);
1.65 +
1.66 +protected:
1.67 +
1.68 + /** p1 in the range */
1.69 + nsRefPtr<nsRange> mRange;
1.70 +
1.71 + /** the editor for this transaction */
1.72 + nsEditor* mEditor;
1.73 +
1.74 + /** range updater object */
1.75 + nsRangeUpdater* mRangeUpdater;
1.76 +};
1.77 +
1.78 +#endif
