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39
40#ifndef QQMLBIND_H
41#define QQMLBIND_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 <qqml.h>
55
56#include <QtCore/qobject.h>
57
58QT_BEGIN_NAMESPACE
59
60class QQmlBindPrivate;
61class Q_AUTOTEST_EXPORT QQmlBind : public QObject, public QQmlPropertyValueSource, public QQmlParserStatus
62{
63public:
64 enum RestorationMode {
65 RestoreNone = 0x0,
66 RestoreBinding = 0x1,
67 RestoreValue = 0x2,
68 RestoreBindingOrValue = RestoreBinding | RestoreValue
69 };
70
71private:
72 Q_OBJECT
73 Q_DECLARE_PRIVATE(QQmlBind)
74 Q_INTERFACES(QQmlParserStatus)
75 Q_INTERFACES(QQmlPropertyValueSource)
76 Q_PROPERTY(QObject *target READ object WRITE setObject)
77 Q_PROPERTY(QString property READ property WRITE setProperty)
78 Q_PROPERTY(QJSValue value READ value WRITE setValue)
79 Q_PROPERTY(bool when READ when WRITE setWhen)
80 Q_PROPERTY(bool delayed READ delayed WRITE setDelayed REVISION 8)
81 Q_PROPERTY(RestorationMode restoreMode READ restoreMode WRITE setRestoreMode
82 NOTIFY restoreModeChanged REVISION 14)
83 Q_ENUM(RestorationMode)
84 QML_NAMED_ELEMENT(Binding)
85
86public:
87 QQmlBind(QObject *parent=nullptr);
88 ~QQmlBind();
89
90 bool when() const;
91 void setWhen(bool);
92
93 QObject *object();
94 void setObject(QObject *);
95
96 QString property() const;
97 void setProperty(const QString &);
98
99 QJSValue value() const;
100 void setValue(const QJSValue &);
101
102 bool delayed() const;
103 void setDelayed(bool);
104
105 RestorationMode restoreMode() const;
106 void setRestoreMode(RestorationMode);
107
108Q_SIGNALS:
109 void restoreModeChanged();
110
111protected:
112 void setTarget(const QQmlProperty &) override;
113 void classBegin() override;
114 void componentComplete() override;
115
116private:
117 void prepareEval();
118 void eval();
119
120private Q_SLOTS:
121 void targetValueChanged();
122};
123
124QT_END_NAMESPACE
125
126QML_DECLARE_TYPE(QQmlBind)
127
128#endif
129

source code of qtdeclarative/src/qml/types/qqmlbind_p.h