зеркало из https://github.com/mozilla/gecko-dev.git
79 строки
2.1 KiB
C
79 строки
2.1 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 DeleteRangeTransaction_h
|
||
|
|
#define DeleteRangeTransaction_h
|
||
|
|
|
||
|
|
#include "EditAggregateTxn.h"
|
||
|
#include "EditTxn.h"
|
||
|
|
#include "nsCycleCollectionParticipant.h"
|
||
|
|
#include "nsID.h"
|
||
|
|
#include "nsIEditor.h"
|
||
|
|
#include "nsISupportsImpl.h"
|
||
|
|
#include "nsRange.h"
|
||
|
|
#include "nscore.h"
|
||
|
|
|
||
|
|
class nsEditor;
|
||
|
|
class nsINode;
|
||
|
class nsRangeUpdater;
|
||
|
|
||
|
|
namespace mozilla {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A transaction that deletes an entire range in the content tree
|
||
|
|
*/
|
||
|
|
class DeleteRangeTransaction final : public EditAggregateTxn
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
/**
|
||
|
|
* Initialize the transaction.
|
||
|
|
* @param aEditor The object providing basic editing operations.
|
||
|
|
* @param aRange The range to delete.
|
||
|
|
*/
|
||
|
|
nsresult Init(nsEditor* aEditor,
|
||
|
|
nsRange* aRange,
|
||
|
|
nsRangeUpdater* aRangeUpdater);
|
||
|
|
|
||
|
|
DeleteRangeTransaction();
|
||
|
|
|
||
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTransaction,
|
||
|
|
EditAggregateTxn)
|
||
|
NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
|
||
|
|
||
|
NS_DECL_EDITTXN
|
||
|
|
|
||
|
|
NS_IMETHOD RedoTransaction() override;
|
||
|
|
||
|
|
virtual void LastRelease() override
|
||
|
{
|
||
|
|
mRange = nullptr;
|
||
|
|
EditAggregateTxn::LastRelease();
|
||
|
|
}
|
||
|
|
|
||
|
|
protected:
|
||
|
|
nsresult CreateTxnsToDeleteBetween(nsINode* aNode,
|
||
|
|
int32_t aStartOffset,
|
||
|
|
int32_t aEndOffset);
|
||
|
|
|
||
|
|
nsresult CreateTxnsToDeleteNodesBetween();
|
||
|
|
|
||
|
|
nsresult CreateTxnsToDeleteContent(nsINode* aParent,
|
||
|
|
int32_t aOffset,
|
||
|
|
nsIEditor::EDirection aAction);
|
||
|
|
|
||
|
|
// P1 in the range.
|
||
|
RefPtr<nsRange> mRange;
|
||
|
|
|
||
|
|
// The editor for this transaction.
|
||
|
|
nsEditor* mEditor;
|
||
|
|
|
||
|
|
// Range updater object.
|
||
|
|
nsRangeUpdater* mRangeUpdater;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace mozilla
|
||
|
|
|
||
|
|
#endif // #ifndef DeleteRangeTransaction_h
|