mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 08:35:26 +00:00
106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
/* 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 mozilla_dom_UndoManager_h
|
|
#define mozilla_dom_UndoManager_h
|
|
|
|
#include "mozilla/dom/UndoManagerBinding.h"
|
|
|
|
#include "nsCycleCollectionParticipant.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsCOMArray.h"
|
|
#include "nsIContent.h"
|
|
#include "nsTArray.h"
|
|
#include "nsWrapperCache.h"
|
|
#include "mozilla/dom/Nullable.h"
|
|
|
|
class nsITransactionManager;
|
|
class nsIMutationObserver;
|
|
|
|
namespace mozilla {
|
|
class ErrorResult;
|
|
namespace dom {
|
|
|
|
class DOMTransaction;
|
|
class DOMTransactionCallback;
|
|
|
|
class UndoManager MOZ_FINAL : public nsISupports,
|
|
public nsWrapperCache
|
|
{
|
|
friend class TxnScopeGuard;
|
|
public:
|
|
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
|
|
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(UndoManager)
|
|
|
|
explicit UndoManager(nsIContent* aNode);
|
|
|
|
void Transact(JSContext* aCx, DOMTransaction& aTransaction,
|
|
bool aMerge, ErrorResult& aRv);
|
|
void Undo(JSContext* aCx, ErrorResult& aRv);
|
|
void Redo(JSContext* acx, ErrorResult& aRv);
|
|
void Item(uint32_t aIndex,
|
|
Nullable<nsTArray<nsRefPtr<DOMTransaction> > >& aItems,
|
|
ErrorResult& aRv);
|
|
uint32_t GetLength(ErrorResult& aRv);
|
|
uint32_t GetPosition(ErrorResult& aRv);
|
|
void ClearUndo(ErrorResult& aRv);
|
|
void ClearRedo(ErrorResult& aRv);
|
|
void Disconnect();
|
|
|
|
nsISupports* GetParentObject() const
|
|
{
|
|
return mHostNode;
|
|
}
|
|
|
|
virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE
|
|
{
|
|
return mozilla::dom::UndoManagerBinding::Wrap(aCx, this);
|
|
}
|
|
|
|
nsITransactionManager* GetTransactionManager();
|
|
|
|
protected:
|
|
virtual ~UndoManager();
|
|
nsCOMPtr<nsITransactionManager> mTxnManager;
|
|
nsCOMPtr<nsIContent> mHostNode;
|
|
|
|
/**
|
|
* Executes |aTransaction| as a manual transaction.
|
|
*/
|
|
void ManualTransact(DOMTransaction* aTransaction,
|
|
ErrorResult& aRv);
|
|
|
|
/**
|
|
* Executes |aTransaction| as an automatic transaction, calling
|
|
* aCallback to do the work.
|
|
*/
|
|
void AutomaticTransact(DOMTransaction* aTransaction,
|
|
DOMTransactionCallback* aCallback,
|
|
ErrorResult& aRv);
|
|
|
|
/**
|
|
* Appends the transactions in the undo transaction history at |aIndex|
|
|
* to the array |aItems|.
|
|
*/
|
|
void ItemInternal(uint32_t aIndex,
|
|
nsTArray<DOMTransaction*>& aItems,
|
|
ErrorResult& aRv);
|
|
|
|
/**
|
|
* Dispatches an event to the undo scope host.
|
|
* @param aPreviousPosition The index of the transaction that
|
|
* triggered the event.
|
|
*/
|
|
void DispatchTransactionEvent(JSContext* aCx, const nsAString& aType,
|
|
uint32_t aPreviousPosition,
|
|
ErrorResult& aRv);
|
|
bool mInTransaction;
|
|
bool mIsDisconnected;
|
|
};
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#endif
|