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39 | |
40 | #ifndef QQMLBOUNDSIGNAL_P_H |
41 | #define QQMLBOUNDSIGNAL_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 <QtCore/qmetaobject.h> |
55 | |
56 | #include <private/qqmljavascriptexpression_p.h> |
57 | #include <private/qqmlboundsignalexpressionpointer_p.h> |
58 | #include <private/qqmlnotifier_p.h> |
59 | #include <private/qflagpointer_p.h> |
60 | #include <private/qqmlrefcount_p.h> |
61 | #include <private/qqmlglobal_p.h> |
62 | #include <private/qbitfield_p.h> |
63 | |
64 | QT_BEGIN_NAMESPACE |
65 | |
66 | class Q_QML_PRIVATE_EXPORT QQmlBoundSignalExpression : public QQmlJavaScriptExpression, public QQmlRefCount |
67 | { |
68 | public: |
69 | QQmlBoundSignalExpression(QObject *target, int index, |
70 | QQmlContextData *ctxt, QObject *scope, const QString &expression, |
71 | const QString &fileName, quint16 line, quint16 column, |
72 | const QString &handlerName = QString(), |
73 | const QString ¶meterString = QString()); |
74 | |
75 | QQmlBoundSignalExpression(QObject *target, int index, |
76 | QQmlContextData *ctxt, QObject *scopeObject, QV4::Function *function, |
77 | QV4::ExecutionContext *scope = nullptr); |
78 | |
79 | // inherited from QQmlJavaScriptExpression. |
80 | QString expressionIdentifier() const override; |
81 | void expressionChanged() override; |
82 | |
83 | // evaluation of a bound signal expression doesn't return any value |
84 | void evaluate(void **a); |
85 | void evaluate(const QList<QVariant> &args); |
86 | |
87 | QString expression() const; |
88 | QObject *target() const { return m_target; } |
89 | |
90 | QQmlEngine *engine() const { return context() ? context()->engine : nullptr; } |
91 | |
92 | private: |
93 | ~QQmlBoundSignalExpression() override; |
94 | |
95 | void init(QQmlContextData *ctxt, QObject *scope); |
96 | |
97 | bool expressionFunctionValid() const { return function() != nullptr; } |
98 | |
99 | int m_index; |
100 | QObject *m_target; |
101 | }; |
102 | |
103 | class Q_QML_PRIVATE_EXPORT QQmlBoundSignal : public QQmlNotifierEndpoint |
104 | { |
105 | public: |
106 | QQmlBoundSignal(QObject *target, int signal, QObject *owner, QQmlEngine *engine); |
107 | ~QQmlBoundSignal(); |
108 | |
109 | void removeFromObject(); |
110 | |
111 | QQmlBoundSignalExpression *expression() const; |
112 | void takeExpression(QQmlBoundSignalExpression *); |
113 | |
114 | void setEnabled(bool enabled); |
115 | |
116 | private: |
117 | friend void QQmlBoundSignal_callback(QQmlNotifierEndpoint *, void **); |
118 | friend class QQmlPropertyPrivate; |
119 | friend class QQmlData; |
120 | friend class QQmlEngineDebugService; |
121 | |
122 | void addToObject(QObject *owner); |
123 | |
124 | QQmlBoundSignal **m_prevSignal; |
125 | QQmlBoundSignal *m_nextSignal; |
126 | |
127 | bool m_enabled; |
128 | |
129 | QQmlBoundSignalExpressionPointer m_expression; |
130 | }; |
131 | |
132 | QT_END_NAMESPACE |
133 | |
134 | #endif // QQMLBOUNDSIGNAL_P_H |
135 | |