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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /editor/libeditor/DeleteNodeTransaction.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'editor/libeditor/DeleteNodeTransaction.h')
-rw-r--r-- | editor/libeditor/DeleteNodeTransaction.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/editor/libeditor/DeleteNodeTransaction.h b/editor/libeditor/DeleteNodeTransaction.h new file mode 100644 index 0000000000..bcae89d174 --- /dev/null +++ b/editor/libeditor/DeleteNodeTransaction.h @@ -0,0 +1,77 @@ +/* -*- 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 DeleteNodeTransaction_h +#define DeleteNodeTransaction_h + +#include "DeleteContentTransactionBase.h" + +#include "EditorForwards.h" + +#include "nsCOMPtr.h" +#include "nsCycleCollectionParticipant.h" +#include "nsIContent.h" +#include "nsINode.h" +#include "nsISupportsImpl.h" +#include "nscore.h" + +namespace mozilla { + +/** + * A transaction that deletes a single element + */ +class DeleteNodeTransaction final : public DeleteContentTransactionBase { + protected: + DeleteNodeTransaction(EditorBase& aEditorBase, nsIContent& aContentToDelete); + + public: + /** + * Creates a delete node transaction instance. This returns nullptr if + * it cannot remove the node from its parent. + * + * @param aEditorBase The editor. + * @param aContentToDelete The node to be removed from the DOM tree. + */ + static already_AddRefed<DeleteNodeTransaction> MaybeCreate( + EditorBase& aEditorBase, nsIContent& aContentToDelete); + + /** + * CanDoIt() returns true if there are enough members and can modify the + * parent. Otherwise, false. + */ + bool CanDoIt() const; + + NS_DECL_ISUPPORTS_INHERITED + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteNodeTransaction, + DeleteContentTransactionBase) + + NS_DECL_EDITTRANSACTIONBASE + NS_DECL_EDITTRANSACTIONBASE_GETASMETHODS_OVERRIDE(DeleteNodeTransaction) + + MOZ_CAN_RUN_SCRIPT NS_IMETHOD RedoTransaction() final; + + EditorDOMPoint SuggestPointToPutCaret() const final; + + nsIContent* GetContent() const { return mContentToDelete; } + + friend std::ostream& operator<<(std::ostream& aStream, + const DeleteNodeTransaction& aTransaction); + + protected: + virtual ~DeleteNodeTransaction() = default; + + // The element to delete. + nsCOMPtr<nsIContent> mContentToDelete; + + // Parent of node to delete. + nsCOMPtr<nsINode> mParentNode; + + // Next sibling to remember for undo/redo purposes. + nsCOMPtr<nsIContent> mRefContent; +}; + +} // namespace mozilla + +#endif // #ifndef DeleteNodeTransaction_h |