/* -*- 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 ChangeAttributeTransaction_h #define ChangeAttributeTransaction_h #include "mozilla/Attributes.h" // override #include "mozilla/EditTransactionBase.h" // base class #include "nsCOMPtr.h" // nsCOMPtr members #include "nsCycleCollectionParticipant.h" // NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED #include "nsISupportsImpl.h" // NS_DECL_ISUPPORTS_INHERITED #include "nsString.h" // nsString members class nsIAtom; namespace mozilla { namespace dom { class Element; } // namespace dom /** * A transaction that changes an attribute of a content node. This transaction * covers add, remove, and change attribute. */ class ChangeAttributeTransaction final : public EditTransactionBase { public: /** * @param aElement the element whose attribute will be changed * @param aAttribute the name of the attribute to change * @param aValue the new value for aAttribute, or null to remove */ ChangeAttributeTransaction(dom::Element& aElement, nsIAtom& aAttribute, const nsAString* aValue); NS_DECL_ISUPPORTS_INHERITED NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ChangeAttributeTransaction, EditTransactionBase) NS_DECL_EDITTRANSACTIONBASE NS_IMETHOD RedoTransaction() override; private: virtual ~ChangeAttributeTransaction(); // The element to operate upon nsCOMPtr<dom::Element> mElement; // The attribute to change nsCOMPtr<nsIAtom> mAttribute; // The value to set the attribute to (ignored if mRemoveAttribute==true) nsString mValue; // True if the operation is to remove mAttribute from mElement bool mRemoveAttribute; // True if the mAttribute was set on mElement at the time of execution bool mAttributeWasSet; // The value to set the attribute to for undo nsString mUndoValue; }; } // namespace mozilla #endif // #ifndef ChangeAttributeTransaction_h