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39
40#ifndef QSTATE_P_H
41#define QSTATE_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include "qstate.h"
55#include "private/qabstractstate_p.h"
56
57#include <QtCore/qlist.h>
58#include <QtCore/qbytearray.h>
59#include <QtCore/qpointer.h>
60#include <QtCore/qvariant.h>
61
62QT_REQUIRE_CONFIG(statemachine);
63
64QT_BEGIN_NAMESPACE
65
66#ifndef QT_NO_PROPERTIES
67
68struct QPropertyAssignment
69{
70 QPropertyAssignment()
71 : object(nullptr), explicitlySet(true) {}
72 QPropertyAssignment(QObject *o, const QByteArray &n,
73 const QVariant &v, bool es = true)
74 : object(o), propertyName(n), value(v), explicitlySet(es)
75 {}
76
77 bool objectDeleted() const { return !object; }
78 void write() const { Q_ASSERT(object != nullptr); object->setProperty(name: propertyName, value); }
79 bool hasTarget(QObject *o, const QByteArray &pn) const
80 { return object == o && propertyName == pn; }
81
82 QPointer<QObject> object;
83 QByteArray propertyName;
84 QVariant value;
85 bool explicitlySet; // false means the property is being restored to its old value
86};
87Q_DECLARE_TYPEINFO(QPropertyAssignment, Q_MOVABLE_TYPE);
88
89#endif // QT_NO_PROPERTIES
90
91class QAbstractTransition;
92class QHistoryState;
93
94class QState;
95class Q_CORE_EXPORT QStatePrivate : public QAbstractStatePrivate
96{
97 Q_DECLARE_PUBLIC(QState)
98public:
99 QStatePrivate();
100 ~QStatePrivate();
101
102 static QStatePrivate *get(QState *q) { return q ? q->d_func() : nullptr; }
103 static const QStatePrivate *get(const QState *q) { return q? q->d_func() : nullptr; }
104
105 QList<QAbstractState*> childStates() const;
106 QList<QHistoryState*> historyStates() const;
107 QList<QAbstractTransition*> transitions() const;
108
109 void emitFinished();
110 void emitPropertiesAssigned();
111
112 QAbstractState *errorState;
113 QAbstractState *initialState;
114 QState::ChildMode childMode;
115 mutable bool childStatesListNeedsRefresh;
116 mutable bool transitionsListNeedsRefresh;
117 mutable QList<QAbstractState*> childStatesList;
118 mutable QList<QAbstractTransition*> transitionsList;
119
120#ifndef QT_NO_PROPERTIES
121 QVector<QPropertyAssignment> propertyAssignments;
122#endif
123};
124
125QT_END_NAMESPACE
126
127#endif
128

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