зеркало из https://github.com/mozilla/gecko-dev.git
77 строки
2.2 KiB
C++
77 строки
2.2 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 DeleteRangeTransaction_h
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#define DeleteRangeTransaction_h
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#include "EditAggregateTransaction.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 nsINode;
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namespace mozilla {
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class EditorBase;
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class RangeUpdater;
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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 DeleteRangeTransaction final : public EditAggregateTransaction
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{
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public:
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/**
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* @param aEditorBase The object providing basic editing operations.
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* @param aRangeToDelete The range to delete.
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*/
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DeleteRangeTransaction(EditorBase& aEditorBase,
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nsRange& aRangeToDelete,
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RangeUpdater* aRangeUpdater);
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTransaction,
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EditAggregateTransaction)
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NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
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NS_DECL_EDITTRANSACTIONBASE
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NS_IMETHOD RedoTransaction() override;
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virtual void LastRelease() override
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{
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mRangeToDelete = nullptr;
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EditAggregateTransaction::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(nsRange* aRangeToDelete);
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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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// The editor for this transaction.
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RefPtr<EditorBase> mEditorBase;
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// P1 in the range. This is only non-null until DoTransaction is called and
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// we convert it into child transactions.
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RefPtr<nsRange> mRangeToDelete;
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// Range updater object.
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RangeUpdater* mRangeUpdater;
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};
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} // namespace mozilla
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#endif // #ifndef DeleteRangeTransaction_h
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