зеркало из https://github.com/mozilla/gecko-dev.git
87 строки
2.5 KiB
C++
87 строки
2.5 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 CreateElementTransaction_h
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#define CreateElementTransaction_h
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#include "mozilla/EditorDOMPoint.h"
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#include "mozilla/EditTransactionBase.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsISupportsImpl.h"
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class nsAtom;
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class nsIContent;
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class nsINode;
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/**
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* A transaction that creates a new node in the content tree.
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*/
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namespace mozilla {
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class EditorBase;
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namespace dom {
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class Element;
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} // namespace dom
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class CreateElementTransaction final : public EditTransactionBase
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{
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protected:
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CreateElementTransaction(EditorBase& aEditorBase,
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nsAtom& aTag,
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const EditorRawDOMPoint& aPointToInsert);
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public:
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/**
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* Create a transaction for creating a new child node of the container of
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* aPointToInsert of type aTag.
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*
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* @param aEditorBase The editor which manages the transaction.
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* @param aTag The tag (P, HR, TABLE, etc.) for the new element.
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* @param aPointToInsert The new node will be inserted before the child at
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* aPointToInsert. If this refers end of the container
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* or after, the new node will be appended to the
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* container.
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*/
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static already_AddRefed<CreateElementTransaction>
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Create(EditorBase& aEditorBase,
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nsAtom& aTag,
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const EditorRawDOMPoint& aPointToInsert);
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(CreateElementTransaction,
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EditTransactionBase)
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NS_DECL_EDITTRANSACTIONBASE
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NS_IMETHOD RedoTransaction() override;
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already_AddRefed<dom::Element> GetNewNode();
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protected:
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virtual ~CreateElementTransaction();
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/**
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* InsertNewNode() inserts mNewNode before the child node at mPointToInsert.
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*/
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void InsertNewNode(ErrorResult& aError);
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// The document into which the new node will be inserted.
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RefPtr<EditorBase> mEditorBase;
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// The tag (mapping to object type) for the new element.
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RefPtr<nsAtom> mTag;
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// The DOM point we will insert mNewNode.
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EditorDOMPoint mPointToInsert;
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// The new node to insert.
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nsCOMPtr<dom::Element> mNewNode;
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};
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} // namespace mozilla
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#endif // #ifndef CreateElementTransaction_h
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