| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtWidgets module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL21$ |
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| ** GNU Lesser General Public License Usage |
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| ** |
| ** As a special exception, The Qt Company gives you certain additional |
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| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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| ** |
| ****************************************************************************/ |
| |
| #ifndef QUNDOSTACK_H |
| #define QUNDOSTACK_H |
| |
| #include <QtCore/qobject.h> |
| #include <QtCore/qstring.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| class QAction; |
| class QUndoCommandPrivate; |
| class QUndoStackPrivate; |
| |
| #ifndef QT_NO_UNDOCOMMAND |
| |
| class Q_WIDGETS_EXPORT QUndoCommand |
| { |
| QUndoCommandPrivate *d; |
| |
| public: |
| explicit QUndoCommand(QUndoCommand *parent = 0); |
| explicit QUndoCommand(const QString &text, QUndoCommand *parent = 0); |
| virtual ~QUndoCommand(); |
| |
| virtual void undo(); |
| virtual void redo(); |
| |
| QString text() const; |
| QString actionText() const; |
| void setText(const QString &text); |
| |
| virtual int id() const; |
| virtual bool mergeWith(const QUndoCommand *other); |
| |
| int childCount() const; |
| const QUndoCommand *child(int index) const; |
| |
| private: |
| Q_DISABLE_COPY(QUndoCommand) |
| friend class QUndoStack; |
| }; |
| |
| #endif // QT_NO_UNDOCOMMAND |
| |
| #ifndef QT_NO_UNDOSTACK |
| |
| class Q_WIDGETS_EXPORT QUndoStack : public QObject |
| { |
| Q_OBJECT |
| Q_DECLARE_PRIVATE(QUndoStack) |
| Q_PROPERTY(bool active READ isActive WRITE setActive) |
| Q_PROPERTY(int undoLimit READ undoLimit WRITE setUndoLimit) |
| |
| public: |
| explicit QUndoStack(QObject *parent = 0); |
| ~QUndoStack(); |
| void clear(); |
| |
| void push(QUndoCommand *cmd); |
| |
| bool canUndo() const; |
| bool canRedo() const; |
| QString undoText() const; |
| QString redoText() const; |
| |
| int count() const; |
| int index() const; |
| QString text(int idx) const; |
| |
| #ifndef QT_NO_ACTION |
| QAction *createUndoAction(QObject *parent, |
| const QString &prefix = QString()) const; |
| QAction *createRedoAction(QObject *parent, |
| const QString &prefix = QString()) const; |
| #endif // QT_NO_ACTION |
| |
| bool isActive() const; |
| bool isClean() const; |
| int cleanIndex() const; |
| |
| void beginMacro(const QString &text); |
| void endMacro(); |
| |
| void setUndoLimit(int limit); |
| int undoLimit() const; |
| |
| const QUndoCommand *command(int index) const; |
| |
| public Q_SLOTS: |
| void setClean(); |
| void setIndex(int idx); |
| void undo(); |
| void redo(); |
| void setActive(bool active = true); |
| |
| Q_SIGNALS: |
| void indexChanged(int idx); |
| void cleanChanged(bool clean); |
| void canUndoChanged(bool canUndo); |
| void canRedoChanged(bool canRedo); |
| void undoTextChanged(const QString &undoText); |
| void redoTextChanged(const QString &redoText); |
| |
| private: |
| Q_DISABLE_COPY(QUndoStack) |
| friend class QUndoGroup; |
| }; |
| |
| #endif // QT_NO_UNDOSTACK |
| |
| QT_END_NAMESPACE |
| |
| #endif // QUNDOSTACK_H |