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-rw-r--r--editor/txmgr/TransactionManager.h93
1 files changed, 93 insertions, 0 deletions
diff --git a/editor/txmgr/TransactionManager.h b/editor/txmgr/TransactionManager.h
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+/* -*- 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 mozilla_TransactionManager_h
+#define mozilla_TransactionManager_h
+
+#include "mozilla/EditorForwards.h"
+#include "mozilla/TransactionStack.h"
+
+#include "nsCOMArray.h"
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsISupportsImpl.h"
+#include "nsITransactionManager.h"
+#include "nsWeakReference.h"
+#include "nscore.h"
+
+class nsITransaction;
+
+namespace mozilla {
+
+class TransactionManager final : public nsITransactionManager,
+ public nsSupportsWeakReference {
+ public:
+ explicit TransactionManager(int32_t aMaxTransactionCount = -1);
+
+ NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+ NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(TransactionManager,
+ nsITransactionManager)
+
+ NS_DECL_NSITRANSACTIONMANAGER
+
+ already_AddRefed<nsITransaction> PeekUndoStack();
+ already_AddRefed<nsITransaction> PeekRedoStack();
+
+ MOZ_CAN_RUN_SCRIPT nsresult Undo();
+ MOZ_CAN_RUN_SCRIPT nsresult Redo();
+
+ size_t NumberOfUndoItems() const { return mUndoStack.GetSize(); }
+ size_t NumberOfRedoItems() const { return mRedoStack.GetSize(); }
+
+ int32_t NumberOfMaximumTransactions() const { return mMaxTransactionCount; }
+
+ bool EnableUndoRedo(int32_t aMaxTransactionCount = -1);
+ bool DisableUndoRedo() { return EnableUndoRedo(0); }
+ bool ClearUndoRedo() {
+ if (NS_WARN_IF(!mDoStack.IsEmpty())) {
+ return false;
+ }
+ mUndoStack.Clear();
+ mRedoStack.Clear();
+ return true;
+ }
+
+ void Attach(HTMLEditor& aHTMLEditor);
+ void Detach(const HTMLEditor& aHTMLEditor);
+
+ MOZ_CAN_RUN_SCRIPT void DidDoNotify(nsITransaction& aTransaction,
+ nsresult aDoResult);
+ MOZ_CAN_RUN_SCRIPT void DidUndoNotify(nsITransaction& aTransaction,
+ nsresult aUndoResult);
+ MOZ_CAN_RUN_SCRIPT void DidRedoNotify(nsITransaction& aTransaction,
+ nsresult aRedoResult);
+
+ /**
+ * Exposing non-virtual methods of nsITransactionManager methods.
+ */
+ MOZ_CAN_RUN_SCRIPT nsresult BeginBatchInternal(nsISupports* aData);
+ nsresult EndBatchInternal(bool aAllowEmpty);
+
+ private:
+ virtual ~TransactionManager() = default;
+
+ MOZ_CAN_RUN_SCRIPT nsresult BeginTransaction(nsITransaction* aTransaction,
+ nsISupports* aData);
+ nsresult EndTransaction(bool aAllowEmpty);
+
+ int32_t mMaxTransactionCount;
+ TransactionStack mDoStack;
+ TransactionStack mUndoStack;
+ TransactionStack mRedoStack;
+ RefPtr<HTMLEditor> mHTMLEditor;
+};
+
+} // namespace mozilla
+
+mozilla::TransactionManager* nsITransactionManager::AsTransactionManager() {
+ return static_cast<mozilla::TransactionManager*>(this);
+}
+
+#endif // #ifndef mozilla_TransactionManager_h