71 lines
2.0 KiB
C++
71 lines
2.0 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 SplitNodeTxn_h__
|
|
#define SplitNodeTxn_h__
|
|
|
|
#include "EditTxn.h" // for EditTxn, NS_DECL_EDITTXN
|
|
#include "nsCOMPtr.h" // for nsCOMPtr
|
|
#include "nsCycleCollectionParticipant.h"
|
|
#include "nsISupportsImpl.h" // for NS_DECL_ISUPPORTS_INHERITED
|
|
#include "nscore.h" // for NS_IMETHOD
|
|
|
|
class nsEditor;
|
|
class nsIContent;
|
|
class nsINode;
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
/**
|
|
* A transaction that splits a node into two identical nodes, with the children
|
|
* divided between the new nodes.
|
|
*/
|
|
class SplitNodeTxn : public EditTxn
|
|
{
|
|
public:
|
|
/** @param aEditor The provider of core editing operations
|
|
* @param aNode The node to split
|
|
* @param aOffset The location within aNode to do the split.
|
|
* aOffset may refer to children of aNode, or content of aNode.
|
|
* The left node will have child|content 0..aOffset-1.
|
|
*/
|
|
SplitNodeTxn(nsEditor& aEditor, nsIContent& aNode, int32_t aOffset);
|
|
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SplitNodeTxn, EditTxn)
|
|
|
|
NS_DECL_EDITTXN
|
|
|
|
NS_IMETHOD RedoTransaction() override;
|
|
|
|
nsIContent* GetNewNode();
|
|
|
|
protected:
|
|
virtual ~SplitNodeTxn();
|
|
|
|
nsEditor& mEditor;
|
|
|
|
/** The node to operate upon */
|
|
nsCOMPtr<nsIContent> mExistingRightNode;
|
|
|
|
/** The offset into mExistingRightNode where its children are split. mOffset
|
|
* is the index of the first child in the right node. -1 means the new node
|
|
* gets no children.
|
|
*/
|
|
int32_t mOffset;
|
|
|
|
/** The node we create when splitting mExistingRightNode */
|
|
nsCOMPtr<nsIContent> mNewLeftNode;
|
|
|
|
/** The parent shared by mExistingRightNode and mNewLeftNode */
|
|
nsCOMPtr<nsINode> mParent;
|
|
};
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#endif
|