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 /*
     SPDX-FileCopyrightText: 2020-2022 Mladen Milinkovic <max@smoothware.net>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #ifndef UNDOSTACK_H
 #define UNDOSTACK_H
 
 #include <QUndoStack>
 
 #include <QStack>
 
 QT_FORWARD_DECLARE_CLASS(QItemSelectionModel)
 
 namespace SubtitleComposer {
 class UndoAction;
 
 class UndoStack : private QUndoStack
 {
     Q_OBJECT
 
     struct Selection {
         Selection();
         Selection(QItemSelectionModel *sel);
         int preCurrentRow;
         int postCurrentRow;
         QList<std::pair<int, int>> preSelection;
         QList<std::pair<int, int>> postSelection;
     };
 
 public:
     typedef enum {
         None = 0,
         Primary = 1,
         Secondary = 2,
         Both = Primary | Secondary,
         Invalid = -1
     } DirtyMode;
 
     explicit UndoStack(QObject *parent = nullptr);
     virtual ~UndoStack();
 
     void clear();
     void push(UndoAction *cmd);
 
     void beginMacro(const QString &text);
     void endMacro(DirtyMode dirtyOverride = Invalid);
 
     using QUndoStack::canUndo;
     using QUndoStack::canRedo;
     using QUndoStack::undoText;
     using QUndoStack::redoText;
 
     using QUndoStack::count;
     using QUndoStack::index;
     using QUndoStack::text;
 
     inline QAction *undoAction() const { return m_undoAction; }
     inline QAction *redoAction() const { return m_redoAction; }
 
     // Subtitle handles/implements these
 //  using QUndoStack::isActive;
 //  using QUndoStack::isClean;
 //  using QUndoStack::cleanIndex;
 
     using QUndoStack::beginMacro;
     using QUndoStack::endMacro;
 
     inline DirtyMode dirtyMode(int index) const { return m_dirtyStack.at(index); }
     using QUndoStack::command;
 
 public slots:
     void undo();
     void redo();
 
 private:
     void levelIncrease(int idx);
     void levelDecrease(int idx);
 
 private:
     int m_level;
     QStack<Selection> m_selectionStack;
     QStack<DirtyMode> m_dirtyStack;
     QAction *m_undoAction;
     QAction *m_redoAction;
 };
 
 }
 
 #endif // UNDOSTACK_H