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39
40#ifndef QABSTRACTSTATE_H
41#define QABSTRACTSTATE_H
42
43#include <QtCore/qobject.h>
44
45QT_REQUIRE_CONFIG(statemachine);
46
47QT_BEGIN_NAMESPACE
48
49class QState;
50class QStateMachine;
51
52class QAbstractStatePrivate;
53class Q_CORE_EXPORT QAbstractState : public QObject
54{
55 Q_OBJECT
56 Q_PROPERTY(bool active READ active NOTIFY activeChanged)
57public:
58 ~QAbstractState();
59
60 QState *parentState() const;
61 QStateMachine *machine() const;
62
63 bool active() const;
64
65Q_SIGNALS:
66 void entered(QPrivateSignal);
67 void exited(QPrivateSignal);
68 void activeChanged(bool active);
69
70protected:
71 QAbstractState(QState *parent = nullptr);
72
73 virtual void onEntry(QEvent *event) = 0;
74 virtual void onExit(QEvent *event) = 0;
75
76 bool event(QEvent *e) override;
77
78protected:
79 QAbstractState(QAbstractStatePrivate &dd, QState *parent);
80
81private:
82 Q_DISABLE_COPY(QAbstractState)
83 Q_DECLARE_PRIVATE(QAbstractState)
84};
85
86QT_END_NAMESPACE
87
88#endif
89

source code of qtbase/src/corelib/statemachine/qabstractstate.h