/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef DeleteTextTransaction_h #define DeleteTextTransaction_h #include "mozilla/EditTransactionBase.h" #include "nsCOMPtr.h" #include "nsCycleCollectionParticipant.h" #include "nsGenericDOMDataNode.h" #include "nsID.h" #include "nsString.h" #include "nscore.h" namespace mozilla { class EditorBase; class RangeUpdater; /** * A transaction that removes text from a content node. */ class DeleteTextTransaction final : public EditTransactionBase { public: /** * Initialize the transaction. * @param aEditorBase The provider of basic editing operations. * @param aElement The content node to remove text from. * @param aOffset The location in aElement to begin the deletion. * @param aNumCharsToDelete The number of characters to delete. Not the * number of bytes! */ DeleteTextTransaction(EditorBase& aEditorBase, nsGenericDOMDataNode& aCharData, uint32_t aOffset, uint32_t aNumCharsToDelete, RangeUpdater* aRangeUpdater); nsresult Init(); NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteTextTransaction, EditTransactionBase) NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override; NS_DECL_EDITTRANSACTIONBASE uint32_t GetOffset() { return mOffset; } uint32_t GetNumCharsToDelete() { return mNumCharsToDelete; } protected: // The provider of basic editing operations. RefPtr<EditorBase> mEditorBase; // The CharacterData node to operate upon. RefPtr<nsGenericDOMDataNode> mCharData; // The offset into mCharData where the deletion is to take place. uint32_t mOffset; // The number of characters to delete. uint32_t mNumCharsToDelete; // The text that was deleted. nsString mDeletedText; // Range updater object. RangeUpdater* mRangeUpdater; }; } // namespace mozilla #endif // #ifndef DeleteTextTransaction_h