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 -*- */
|
|
/* 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.
|
|
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
|