src/qml/qml/qqmlproperty_p.h

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  41
  42 #ifndef QQMLPROPERTY_P_H
  43 #define QQMLPROPERTY_P_H
  44
  45 //
  46 //  W A R N I N G
  47 //  -------------
  48 //
  49 // This file is not part of the Qt API.  It exists purely as an
  50 // implementation detail.  This header file may change from version to
  51 // version without notice, or even be removed.
  52 //
  53 // We mean it.
  54 //
  55
  56 #include "qqmlproperty.h"
  57 #include "qqmlengine.h"
  58
  59 #include <private/qobject_p.h>
  60 #include <private/qtqmlglobal_p.h>
  61 #include <private/qqmlpropertycache_p.h>
  62 #include <private/qqmlguard_p.h>
  63 #include <private/qqmlboundsignalexpressionpointer_p.h>
  64
  65 QT_BEGIN_NAMESPACE
  66
  67 class QQmlContext;
  68 class QQmlEnginePrivate;
  69 class QQmlJavaScriptExpression;
  70 class Q_QML_PRIVATE_EXPORT QQmlPropertyPrivate : public QQmlRefCount
  71 {
  72 public:
  73     enum WriteFlag {
  74         BypassInterceptor = 0x01,
  75         DontRemoveBinding = 0x02,
  76         RemoveBindingOnAliasWrite = 0x04
  77     };
  78     Q_DECLARE_FLAGS(WriteFlags, WriteFlag)
  79
  80     QQmlContextData *context;
  81     QQmlGuard<QQmlEngine> engine;
  82     QQmlGuard<QObject> object;
  83
  84     QQmlPropertyData core;
  85
  86     bool isNameCached:1;
  87     QString nameCache;
  88
  89     QQmlPropertyPrivate();
  90
  91     inline QQmlContextData *effectiveContext() const;
  92
  93     void initProperty(QObject *obj, const QString &name);
  94     void initDefault(QObject *obj);
  95
  96     bool isValueType() const;
  97     int propertyType() const;
  98     QQmlProperty::Type type() const;
  99     QQmlProperty::PropertyTypeCategory propertyTypeCategory() const;
 100
 101     QVariant readValueProperty();
 102     bool writeValueProperty(const QVariant &, WriteFlags);
 103
 104     static QQmlMetaObject rawMetaObjectForType(QQmlEnginePrivate *, int);
 105     static bool writeEnumProperty(const QMetaProperty &prop, int idx, QObject *object,
 106                                   const QVariant &value, int flags);
 107     static bool writeValueProperty(QObject *,
 108                                    const QQmlPropertyData &,
 109                                    const QVariant &, QQmlContextData *,
 110                                    WriteFlags flags = 0);
 111     static bool write(QObject *, const QQmlPropertyData &, const QVariant &,
 112                       QQmlContextData *, WriteFlags flags = 0);
 113     static void findAliasTarget(QObject *, int, QObject **, int *);
 114
 115     static QQmlAbstractBinding *setBinding(QObject *, int coreIndex,
 116                                                    int valueTypeIndex /* -1 */,
 117                                                    QQmlAbstractBinding *,
 118                                                    WriteFlags flags = DontRemoveBinding);
 119     static QQmlAbstractBinding *setBindingNoEnable(QObject *, int coreIndex,
 120                                                            int valueTypeIndex /* -1 */,
 121                                                            QQmlAbstractBinding *);
 122     static QQmlAbstractBinding *activateSharedBinding(QQmlContextData *context,
 123                                                       int sharedIdx, WriteFlags flags);
 124     static QQmlAbstractBinding *binding(QObject *, int coreIndex,
 125                                                 int valueTypeIndex /* -1 */);
 126
 127     static QQmlPropertyData saveValueType(const QQmlPropertyData &,
 128                                           const QMetaObject *, int,
 129                                           QQmlEngine *);
 130     static QQmlProperty restore(QObject *,
 131                                         const QQmlPropertyData &,
 132                                         QQmlContextData *);
 133
 134     int signalIndex() const;
 135
 136     static inline QQmlPropertyPrivate *get(const QQmlProperty &p) {
 137         return p.d;
 138     }
 139
 140     // "Public" (to QML) methods
 141     static QQmlAbstractBinding *binding(const QQmlProperty &that);
 142     static QQmlAbstractBinding *setBinding(const QQmlProperty &that,
 143                                                    QQmlAbstractBinding *,
 144                                                    WriteFlags flags = DontRemoveBinding);
 145     static QQmlBoundSignalExpression *signalExpression(const QQmlProperty &that);
 146     static QQmlBoundSignalExpressionPointer setSignalExpression(const QQmlProperty &that,
 147                                                                 QQmlBoundSignalExpression *);
 148     static QQmlBoundSignalExpressionPointer takeSignalExpression(const QQmlProperty &that,
 149                                                                  QQmlBoundSignalExpression *);
 150     static bool write(const QQmlProperty &that, const QVariant &, WriteFlags);
 151     static bool writeBinding(QObject *, const QQmlPropertyData &,
 152                              QQmlContextData *context,
 153                              QQmlJavaScriptExpression *expression,
 154                              v8::Handle<v8::Value> result, bool isUndefined,
 155                              WriteFlags flags);
 156     static int valueTypeCoreIndex(const QQmlProperty &that);
 157     static int bindingIndex(const QQmlProperty &that);
 158     static int bindingIndex(const QQmlPropertyData &that);
 159     static QMetaMethod findSignalByName(const QMetaObject *mo, const QByteArray &);
 160     static bool connect(const QObject *sender, int signal_index,
 161                         const QObject *receiver, int method_index,
 162                         int type = 0, int *types = 0);
 163     static void flushSignal(const QObject *sender, int signal_index);
 164 };
 165
 166 Q_DECLARE_OPERATORS_FOR_FLAGS(QQmlPropertyPrivate::WriteFlags)
 167
 168 QT_END_NAMESPACE
 169
 170 #endif // QQMLPROPERTY_P_H