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f882fa6959
nsIEditor::EnableUndo() and nsITransactionManager::Clear(), nsITransactionManager::SetMaxTransactionCount() are called a lot but they are virtual and some of or all of them are called once. There should be each non-virtual method to do what each root caller wants. Therefore, this patch adds EditorBase::EnableUndoRedo(), EditorBase::DisableUndoRedo(), EditorBase::ClearUndoRedo(), TransactionManager::EnableUndoRedo(), TransactionManager::DisableUndoRedo() and TransactionManager::ClearUndoRedo(). Note that this patch makes TransactionManager won't clear mUndoStack nor mRedoStack if mDoStack is not empty. This is checked only by TransactionManager::SetMaxTransactionCount() but according to the comment, TransactionManager::Clear(), TransactionManager::UndoStack() and TransactionManager::RedoStack() should check it too. MozReview-Commit-ID: 6qBZOQNwdhw --HG-- extra : rebase_source : 3249137f7acca0b4698713ab732774140bcc27e8
107 lines
3.2 KiB
C++
107 lines
3.2 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 mozilla_TransactionManager_h
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#define mozilla_TransactionManager_h
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#include "mozilla/TransactionStack.h"
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#include "nsCOMArray.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsISupportsImpl.h"
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#include "nsITransactionManager.h"
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#include "nsWeakReference.h"
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#include "nscore.h"
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class nsITransaction;
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class nsITransactionListener;
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namespace mozilla {
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class TransactionManager final : public nsITransactionManager
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, public nsSupportsWeakReference
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{
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public:
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explicit TransactionManager(int32_t aMaxTransactionCount = -1);
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(TransactionManager,
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nsITransactionManager)
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NS_DECL_NSITRANSACTIONMANAGER
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already_AddRefed<nsITransaction> PeekUndoStack();
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already_AddRefed<nsITransaction> PeekRedoStack();
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nsresult Undo();
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nsresult Redo();
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size_t NumberOfUndoItems() const
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{
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return mUndoStack.GetSize();
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}
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size_t NumberOfRedoItems() const
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{
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return mRedoStack.GetSize();
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}
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bool EnableUndoRedo(int32_t aMaxTransactionCount = -1);
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bool DisableUndoRedo()
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{
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return EnableUndoRedo(0);
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}
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bool ClearUndoRedo()
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{
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if (NS_WARN_IF(!mDoStack.IsEmpty())) {
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return false;
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}
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mUndoStack.Clear();
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mRedoStack.Clear();
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return true;
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}
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nsresult WillDoNotify(nsITransaction* aTransaction, bool* aInterrupt);
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nsresult DidDoNotify(nsITransaction* aTransaction, nsresult aExecuteResult);
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nsresult WillUndoNotify(nsITransaction* aTransaction, bool* aInterrupt);
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nsresult DidUndoNotify(nsITransaction* aTransaction, nsresult aUndoResult);
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nsresult WillRedoNotify(nsITransaction* aTransaction, bool *aInterrupt);
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nsresult DidRedoNotify(nsITransaction* aTransaction, nsresult aRedoResult);
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nsresult WillBeginBatchNotify(bool* aInterrupt);
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nsresult DidBeginBatchNotify(nsresult aResult);
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nsresult WillEndBatchNotify(bool* aInterrupt);
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nsresult DidEndBatchNotify(nsresult aResult);
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nsresult WillMergeNotify(nsITransaction* aTop,
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nsITransaction* aTransaction,
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bool* aInterrupt);
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nsresult DidMergeNotify(nsITransaction* aTop,
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nsITransaction* aTransaction,
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bool aDidMerge,
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nsresult aMergeResult);
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private:
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virtual ~TransactionManager() = default;
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nsresult BeginTransaction(nsITransaction* aTransaction,
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nsISupports* aData);
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nsresult EndTransaction(bool aAllowEmpty);
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int32_t mMaxTransactionCount;
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TransactionStack mDoStack;
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TransactionStack mUndoStack;
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TransactionStack mRedoStack;
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nsCOMArray<nsITransactionListener> mListeners;
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};
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} // namespace mozilla
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mozilla::TransactionManager*
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nsITransactionManager::AsTransactionManager()
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{
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return static_cast<mozilla::TransactionManager*>(this);
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}
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#endif // #ifndef mozilla_TransactionManager_h
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