forked from mirrors/gecko-dev
1abcb1c46b
Headers in editor module has a lot of forward declarations for avoiding the include hell and has a lot of helper template classes. Forward declarations of template classes is really messy and I'd want to avoid the duplication because it blocks changing template class. Therefore, centralizing forward declarations makes the headers cleaner and maintaining template classes easier. Therefore, this patch adds a new header file which has only forward declarations and some aliases. It'd be better to define `enum class`es in it like `EventForwards.h` for reducing the dependencies between headers, but currently this does not do it for making the new file simpler as far as possible. Removing `EditActionListener.h` is because it's unused. Removing `AutoTopLevelEditSubActionNotifier` is because it's renamed to `AutoEditSubActionNotifier`. https://hg.mozilla.org/mozilla-central/rev/6de55c5b5f8d5f92389d0d244d2bced1f979ade9 Differential Revision: https://phabricator.services.mozilla.com/D143817
78 lines
2.2 KiB
C++
78 lines
2.2 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 DeleteNodeTransaction_h
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#define DeleteNodeTransaction_h
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#include "EditTransactionBase.h"
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#include "EditorForwards.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsIContent.h"
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#include "nsINode.h"
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#include "nsISupportsImpl.h"
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#include "nscore.h"
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namespace mozilla {
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/**
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* A transaction that deletes a single element
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*/
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class DeleteNodeTransaction final : public EditTransactionBase {
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protected:
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DeleteNodeTransaction(EditorBase& aEditorBase, nsIContent& aContentToDelete);
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public:
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/**
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* Creates a delete node transaction instance. This returns nullptr if
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* it cannot remove the node from its parent.
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*
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* @param aEditorBase The editor.
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* @param aContentToDelete The node to be removed from the DOM tree.
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*/
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static already_AddRefed<DeleteNodeTransaction> MaybeCreate(
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EditorBase& aEditorBase, nsIContent& aContentToDelete);
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/**
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* CanDoIt() returns true if there are enough members and can modify the
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* parent. Otherwise, false.
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*/
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bool CanDoIt() const;
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteNodeTransaction,
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EditTransactionBase)
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NS_DECL_EDITTRANSACTIONBASE
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NS_DECL_EDITTRANSACTIONBASE_GETASMETHODS_OVERRIDE(DeleteNodeTransaction)
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MOZ_CAN_RUN_SCRIPT NS_IMETHOD RedoTransaction() override;
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nsIContent* GetContent() const { return mContentToDelete; }
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friend std::ostream& operator<<(std::ostream& aStream,
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const DeleteNodeTransaction& aTransaction);
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protected:
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virtual ~DeleteNodeTransaction() = default;
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// The editor for this transaction.
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RefPtr<EditorBase> mEditorBase;
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// The element to delete.
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nsCOMPtr<nsIContent> mContentToDelete;
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// Parent of node to delete.
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nsCOMPtr<nsINode> mParentNode;
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// Next sibling to remember for undo/redo purposes.
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nsCOMPtr<nsIContent> mRefContent;
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};
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} // namespace mozilla
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#endif // #ifndef DeleteNodeTransaction_h
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