зеркало из https://github.com/mozilla/gecko-dev.git
76 строки
1.9 KiB
C++
76 строки
1.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DeleteRangeTxn_h__
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#define DeleteRangeTxn_h__
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#include "EditAggregateTxn.h"
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#include "EditTxn.h"
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#include "nsAutoPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsID.h"
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#include "nsIEditor.h"
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#include "nsISupportsImpl.h"
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#include "nsRange.h"
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#include "nscore.h"
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class nsEditor;
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class nsINode;
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class nsRangeUpdater;
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/**
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* A transaction that deletes an entire range in the content tree
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*/
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class DeleteRangeTxn : public EditAggregateTxn
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{
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public:
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/** initialize the transaction.
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* @param aEditor the object providing basic editing operations
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* @param aRange the range to delete
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*/
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nsresult Init(nsEditor* aEditor,
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nsRange* aRange,
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nsRangeUpdater* aRangeUpdater);
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DeleteRangeTxn();
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTxn, EditAggregateTxn)
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NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
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NS_DECL_EDITTXN
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NS_IMETHOD RedoTransaction() override;
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virtual void LastRelease() override
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{
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mRange = nullptr;
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EditAggregateTxn::LastRelease();
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}
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protected:
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nsresult CreateTxnsToDeleteBetween(nsINode* aNode,
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int32_t aStartOffset,
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int32_t aEndOffset);
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nsresult CreateTxnsToDeleteNodesBetween();
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nsresult CreateTxnsToDeleteContent(nsINode* aParent,
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int32_t aOffset,
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nsIEditor::EDirection aAction);
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protected:
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/** p1 in the range */
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RefPtr<nsRange> mRange;
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/** the editor for this transaction */
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nsEditor* mEditor;
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/** range updater object */
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nsRangeUpdater* mRangeUpdater;
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};
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#endif
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