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22 ** GNU General Public License Usage
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42 #ifndef QDECLARATIVEDATA_P_H
43 #define QDECLARATIVEDATA_P_H
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.
56 #include <QtDeclarative/qjsvalue.h>
57 #include <private/qobject_p.h>
59 #include <private/qv8_p.h>
63 class QDeclarativeGuardImpl;
64 class QDeclarativeCompiledData;
65 class QDeclarativeAbstractBinding;
66 class QDeclarativeContext;
67 class QDeclarativePropertyCache;
68 class QDeclarativeContextData;
69 class QDeclarativeNotifier;
70 class QDeclarativeDataExtended;
71 // This class is structured in such a way, that simply zero'ing it is the
72 // default state for elemental object allocations. This is crucial in the
73 // workings of the QDeclarativeInstruction::CreateSimpleObject instruction.
74 // Don't change anything here without first considering that case!
75 class Q_DECLARATIVE_EXPORT QDeclarativeData : public QAbstractDeclarativeData
79 : ownMemory(true), ownContext(false), indestructible(true), explicitIndestructibleSet(false),
80 hasTaintedV8Object(false), context(0), outerContext(0), bindings(0), nextContextObject(0),
81 prevContextObject(0), bindingBitsSize(0), bindingBits(0), lineNumber(0), columnNumber(0),
82 deferredComponent(0), deferredIdx(0), v8objectid(0), propertyCache(0), guards(0),
87 static inline void init() {
88 QAbstractDeclarativeData::destroyed = destroyed;
89 QAbstractDeclarativeData::parentChanged = parentChanged;
90 QAbstractDeclarativeData::objectNameChanged = objectNameChanged;
93 static void destroyed(QAbstractDeclarativeData *, QObject *);
94 static void parentChanged(QAbstractDeclarativeData *, QObject *, QObject *);
95 static void objectNameChanged(QAbstractDeclarativeData *, QObject *);
97 void destroyed(QObject *);
98 void parentChanged(QObject *, QObject *);
99 void objectNameChanged(QObject *);
101 void setImplicitDestructible() {
102 if (!explicitIndestructibleSet) indestructible = false;
106 quint32 ownContext:1;
107 quint32 indestructible:1;
108 quint32 explicitIndestructibleSet:1;
109 quint32 hasTaintedV8Object:1;
112 // The context that created the C++ object
113 QDeclarativeContextData *context;
114 // The outermost context in which this object lives
115 QDeclarativeContextData *outerContext;
117 QDeclarativeAbstractBinding *bindings;
119 // Linked list for QDeclarativeContext::contextObjects
120 QDeclarativeData *nextContextObject;
121 QDeclarativeData**prevContextObject;
124 quint32 *bindingBits;
125 bool hasBindingBit(int) const;
126 void clearBindingBit(int);
127 void setBindingBit(QObject *obj, int);
132 QDeclarativeCompiledData *deferredComponent; // Can't this be found from the context?
133 unsigned int deferredIdx;
136 v8::Persistent<v8::Object> v8object;
138 QDeclarativePropertyCache *propertyCache;
140 QDeclarativeGuardImpl *guards;
142 static QDeclarativeData *get(const QObject *object, bool create = false) {
143 QObjectPrivate *priv = QObjectPrivate::get(const_cast<QObject *>(object));
144 if (priv->wasDeleted) {
147 } else if (priv->declarativeData) {
148 return static_cast<QDeclarativeData *>(priv->declarativeData);
150 priv->declarativeData = new QDeclarativeData;
151 return static_cast<QDeclarativeData *>(priv->declarativeData);
157 bool hasExtendedData() const { return extendedData != 0; }
158 QDeclarativeNotifier *objectNameNotifier() const;
159 QHash<int, QObject *> *attachedProperties() const;
162 // For objectNameNotifier and attachedProperties
163 mutable QDeclarativeDataExtended *extendedData;
168 #endif // QDECLARATIVEDATA_P_H