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537b829474
A lot of methods take |const EditorRawDOMPoint&| as their argument. However, some of them are called with EditorDOMPoint::AsRaw(). This is not good for performance because: 1. Needs to create temporary instance of EditorRawDOMPoint. 2. EditorRawDOMPoint::AsRaw() may be used by simple mistake. 3. Such methods may call EditorRawDOMPoint::Offset(), however, it's not copied to the original EditorDOMPoint instance. So, callers may need to compute offset again. So, such methods should be changed to template methods if they are not virtual method and AsRaw() should be gotten rid of for prevent it looking not expensive. MozReview-Commit-ID: DAqqW4a2EMS --HG-- extra : rebase_source : 120b920477fe6e7231271411a00994325acdb842
80 lines
2.6 KiB
C++
80 lines
2.6 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 SplitNodeTransaction_h
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#define SplitNodeTransaction_h
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#include "mozilla/EditorDOMPoint.h" // for RangeBoundary, EditorRawDOMPoint
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#include "mozilla/EditTransactionBase.h" // for EditTxn, etc.
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#include "nsCOMPtr.h" // for nsCOMPtr
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#include "nsCycleCollectionParticipant.h"
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#include "nsISupportsImpl.h" // for NS_DECL_ISUPPORTS_INHERITED
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#include "nscore.h" // for NS_IMETHOD
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class nsIContent;
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class nsINode;
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namespace mozilla {
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class EditorBase;
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/**
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* A transaction that splits a node into two identical nodes, with the children
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* divided between the new nodes.
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*/
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class SplitNodeTransaction final : public EditTransactionBase
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{
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private:
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template<typename PT, typename CT>
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SplitNodeTransaction(EditorBase& aEditorBase,
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const EditorDOMPointBase<PT, CT>& aStartOfRightNode);
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public:
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/**
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* Creates a transaction to create a new node (left node) identical to an
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* existing node (right node), and split the contents between the same point
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* in both nodes.
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*
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* @param aEditorBase The provider of core editing operations.
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* @param aStartOfRightNode The point to split. Its container will be
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* the right node, i.e., become the new node's
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* next sibling. And the point will be start
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* of the right node.
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*/
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template<typename PT, typename CT>
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static already_AddRefed<SplitNodeTransaction>
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Create(EditorBase& aEditorBase,
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const EditorDOMPointBase<PT, CT>& aStartOfRightNode);
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SplitNodeTransaction,
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EditTransactionBase)
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NS_DECL_EDITTRANSACTIONBASE
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NS_IMETHOD RedoTransaction() override;
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nsIContent* GetNewNode();
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protected:
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virtual ~SplitNodeTransaction();
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RefPtr<EditorBase> mEditorBase;
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// The container is existing right node (will be split).
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// The point referring this is start of the right node after it's split.
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EditorDOMPoint mStartOfRightNode;
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// The node we create when splitting mExistingRightNode.
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nsCOMPtr<nsIContent> mNewLeftNode;
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// The parent shared by mExistingRightNode and mNewLeftNode.
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nsCOMPtr<nsINode> mParent;
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};
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} // namespace mozilla
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#endif // #ifndef SplitNodeTransaction_h
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