103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef UNDOSTACK_H
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#define UNDOSTACK_H
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#include <QAction>
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#include <QAbstractItemModel>
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#include "common/define.h"
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#include "undo/undocommand.h"
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namespace olive {
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class UndoStack : public QAbstractItemModel
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{
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Q_OBJECT
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public:
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UndoStack();
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virtual ~UndoStack() override;
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void push(UndoCommand* command, const QString &name);
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void jump(size_t index);
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void clear();
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bool CanUndo() const;
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bool CanRedo() const
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{
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return !undone_commands_.empty();
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}
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void UpdateActions();
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QAction* GetUndoAction()
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{
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return undo_action_;
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}
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QAction* GetRedoAction()
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{
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return redo_action_;
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}
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virtual int columnCount(const QModelIndex &parent = QModelIndex()) const override;
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virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
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virtual QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override;
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virtual QModelIndex parent(const QModelIndex &index) const override;
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virtual int rowCount(const QModelIndex &parent = QModelIndex()) const override;
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virtual QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
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virtual bool hasChildren(const QModelIndex &parent = QModelIndex()) const override;
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signals:
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void indexChanged(int i);
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public slots:
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void undo();
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void redo();
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private:
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static const int kMaxUndoCommands;
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struct CommandEntry
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{
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UndoCommand *command;
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QString name;
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};
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std::list<CommandEntry> commands_;
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std::list<CommandEntry> undone_commands_;
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QAction* undo_action_;
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QAction* redo_action_;
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};
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}
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#endif // UNDOSTACK_H
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