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39
40#ifndef QUNDOGROUP_H
41#define QUNDOGROUP_H
42
43#include <QtWidgets/qtwidgetsglobal.h>
44#include <QtCore/qobject.h>
45#include <QtCore/qstring.h>
46
47QT_REQUIRE_CONFIG(undogroup);
48
49QT_BEGIN_NAMESPACE
50
51class QUndoGroupPrivate;
52class QUndoStack;
53class QAction;
54
55class Q_WIDGETS_EXPORT QUndoGroup : public QObject
56{
57 Q_OBJECT
58 Q_DECLARE_PRIVATE(QUndoGroup)
59
60public:
61 explicit QUndoGroup(QObject *parent = nullptr);
62 ~QUndoGroup();
63
64 void addStack(QUndoStack *stack);
65 void removeStack(QUndoStack *stack);
66 QList<QUndoStack*> stacks() const;
67 QUndoStack *activeStack() const;
68
69#ifndef QT_NO_ACTION
70 QAction *createUndoAction(QObject *parent,
71 const QString &prefix = QString()) const;
72 QAction *createRedoAction(QObject *parent,
73 const QString &prefix = QString()) const;
74#endif // QT_NO_ACTION
75 bool canUndo() const;
76 bool canRedo() const;
77 QString undoText() const;
78 QString redoText() const;
79 bool isClean() const;
80
81public Q_SLOTS:
82 void undo();
83 void redo();
84 void setActiveStack(QUndoStack *stack);
85
86Q_SIGNALS:
87 void activeStackChanged(QUndoStack *stack);
88 void indexChanged(int idx);
89 void cleanChanged(bool clean);
90 void canUndoChanged(bool canUndo);
91 void canRedoChanged(bool canRedo);
92 void undoTextChanged(const QString &undoText);
93 void redoTextChanged(const QString &redoText);
94
95private:
96 Q_DISABLE_COPY(QUndoGroup)
97};
98
99QT_END_NAMESPACE
100
101#endif // QUNDOGROUP_H
102

source code of qtbase/src/widgets/util/qundogroup.h