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22 ** GNU General Public License Usage
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40 ****************************************************************************/
42 #ifndef QDECLARATIVEPROPERTYCACHE_P_H
43 #define QDECLARATIVEPROPERTYCACHE_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 "private/qdeclarativerefcount_p.h"
57 #include "private/qdeclarativecleanup_p.h"
58 #include "private/qdeclarativenotifier_p.h"
60 #include "private/qhashedstring_p.h"
61 #include <QtCore/qvector.h>
65 class QDeclarativeEngine;
68 class QV8QObjectWrapper;
70 class Q_DECLARATIVE_EXPORT QDeclarativePropertyCache : public QDeclarativeRefCount, public QDeclarativeCleanup
73 QDeclarativePropertyCache(QDeclarativeEngine *);
74 QDeclarativePropertyCache(QDeclarativeEngine *, const QMetaObject *);
75 virtual ~QDeclarativePropertyCache();
79 inline bool operator==(const Data &);
84 // Can apply to all properties, except IsFunction
85 IsConstant = 0x00000001, // Has CONST flag
86 IsWritable = 0x00000002, // Has WRITE function
87 IsResettable = 0x00000004, // Has RESET function
88 IsAlias = 0x00000008, // Is a QML alias to another property
89 IsFinal = 0x00000010, // Has FINAL flag
90 IsDirect = 0x00000020, // Exists on a C++ QMetaObject
92 // These are mutualy exclusive
93 IsFunction = 0x00000040, // Is an invokable
94 IsQObjectDerived = 0x00000080, // Property type is a QObject* derived type
95 IsEnumType = 0x00000100, // Property type is an enum
96 IsQList = 0x00000200, // Property type is a QML list
97 IsQmlBinding = 0x00000400, // Property type is a QDeclarativeBinding*
98 IsQJSValue = 0x00000800, // Property type is a QScriptValue
99 IsV8Handle = 0x00001000, // Property type is a QDeclarativeV8Handle
101 // Apply only to IsFunctions
102 IsVMEFunction = 0x00002000, // Function was added by QML
103 HasArguments = 0x00004000, // Function takes arguments
104 IsSignal = 0x00008000, // Function is a signal
105 IsVMESignal = 0x00010000, // Signal was added by QML
106 IsV8Function = 0x00020000, // Function takes QDeclarativeV8Function* args
107 IsSignalHandler = 0x00040000, // Function is a signal handler
109 // Internal QDeclarativePropertyCache flags
110 NotFullyResolved = 0x00080000 // True if the type data is to be lazily resolved
112 Q_DECLARE_FLAGS(Flags, Flag)
114 Flags getFlags() const { return flags; }
115 void setFlags(Flags f) { flags = f; }
117 bool isValid() const { return coreIndex != -1; }
119 bool isConstant() const { return flags & IsConstant; }
120 bool isWritable() const { return flags & IsWritable; }
121 bool isResettable() const { return flags & IsResettable; }
122 bool isAlias() const { return flags & IsAlias; }
123 bool isFinal() const { return flags & IsFinal; }
124 bool isDirect() const { return flags & IsDirect; }
125 bool isFunction() const { return flags & IsFunction; }
126 bool isQObject() const { return flags & IsQObjectDerived; }
127 bool isEnum() const { return flags & IsEnumType; }
128 bool isQList() const { return flags & IsQList; }
129 bool isQmlBinding() const { return flags & IsQmlBinding; }
130 bool isQJSValue() const { return flags & IsQJSValue; }
131 bool isV8Handle() const { return flags & IsV8Handle; }
132 bool isVMEFunction() const { return flags & IsVMEFunction; }
133 bool hasArguments() const { return flags & HasArguments; }
134 bool isSignal() const { return flags & IsSignal; }
135 bool isVMESignal() const { return flags & IsVMESignal; }
136 bool isV8Function() const { return flags & IsV8Function; }
137 bool isSignalHandler() const { return flags & IsSignalHandler; }
140 int propType; // When !NotFullyResolved
141 const char *propTypeName; // When NotFullyResolved
145 int notifyIndex; // When !IsFunction
146 int relatedIndex; // When IsFunction
148 uint overrideIndexIsProperty : 1;
149 int overrideIndex : 31;
151 int metaObjectOffset;
153 static Flags flagsForProperty(const QMetaProperty &, QDeclarativeEngine *engine = 0);
154 void load(const QMetaProperty &, QDeclarativeEngine *engine = 0);
155 void load(const QMetaMethod &);
156 QString name(QObject *);
157 QString name(const QMetaObject *);
160 void lazyLoad(const QMetaProperty &, QDeclarativeEngine *engine = 0);
161 void lazyLoad(const QMetaMethod &);
162 bool notFullyResolved() const { return flags & NotFullyResolved; }
163 friend class QDeclarativePropertyCache;
167 struct ValueTypeData {
168 inline ValueTypeData();
169 inline bool operator==(const ValueTypeData &);
170 Data::Flags flags; // flags of the access property on the value type proxy object
171 int valueTypeCoreIdx; // The prop index of the access property on the value type proxy object
172 int valueTypePropType; // The QVariant::Type of access property on the value type proxy object
175 void update(QDeclarativeEngine *, const QMetaObject *);
177 QDeclarativePropertyCache *copy(int reserve = 0);
178 void append(QDeclarativeEngine *, const QMetaObject *, Data::Flag propertyFlags = Data::NoFlags,
179 Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags);
180 void append(QDeclarativeEngine *, const QMetaObject *, int revision, Data::Flag propertyFlags = Data::NoFlags,
181 Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags);
183 static Data create(const QMetaObject *, const QString &);
185 inline Data *property(const QHashedV8String &) const;
186 Data *property(const QHashedStringRef &) const;
187 Data *property(const QHashedCStringRef &) const;
188 Data *property(const QString &) const;
189 Data *property(int) const;
190 Data *method(int) const;
191 QStringList propertyNames() const;
193 inline Data *overrideData(Data *) const;
194 inline bool isAllowedInRevision(Data *) const;
196 inline QDeclarativeEngine *qmlEngine() const;
197 static Data *property(QDeclarativeEngine *, QObject *, const QString &, Data &);
198 static Data *property(QDeclarativeEngine *, QObject *, const QHashedV8String &, Data &);
200 static bool isDynamicMetaObject(const QMetaObject *);
202 virtual void clear();
205 friend class QDeclarativeEnginePrivate;
206 friend class QV8QObjectWrapper;
208 // Implemented in v8/qv8qobjectwrapper.cpp
209 v8::Local<v8::Object> newQObject(QObject *, QV8Engine *);
211 typedef QVector<Data> IndexCache;
212 typedef QStringHash<Data *> StringCache;
213 typedef QVector<int> AllowedRevisionCache;
215 void resolve(Data *) const;
216 void updateRecur(QDeclarativeEngine *, const QMetaObject *);
218 QDeclarativeEngine *engine;
220 QDeclarativePropertyCache *parent;
221 int propertyIndexCacheStart;
222 int methodIndexCacheStart;
224 IndexCache propertyIndexCache;
225 IndexCache methodIndexCache;
226 IndexCache signalHandlerIndexCache;
227 StringCache stringCache;
228 AllowedRevisionCache allowedRevisionCache;
229 v8::Persistent<v8::Function> constructor;
231 Q_DECLARE_OPERATORS_FOR_FLAGS(QDeclarativePropertyCache::Data::Flags);
233 QDeclarativePropertyCache::Data::Data()
234 : propType(0), coreIndex(-1), notifyIndex(-1), overrideIndexIsProperty(false), overrideIndex(-1),
235 revision(0), metaObjectOffset(-1), flags(0)
239 bool QDeclarativePropertyCache::Data::operator==(const QDeclarativePropertyCache::Data &other)
241 return flags == other.flags &&
242 propType == other.propType &&
243 coreIndex == other.coreIndex &&
244 notifyIndex == other.notifyIndex &&
245 revision == other.revision;
248 QDeclarativePropertyCache::Data *
249 QDeclarativePropertyCache::overrideData(Data *data) const
251 if (data->overrideIndex < 0)
254 if (data->overrideIndexIsProperty)
255 return property(data->overrideIndex);
257 return method(data->overrideIndex);
260 QDeclarativePropertyCache::ValueTypeData::ValueTypeData()
261 : flags(QDeclarativePropertyCache::Data::NoFlags), valueTypeCoreIdx(-1), valueTypePropType(0)
265 bool QDeclarativePropertyCache::ValueTypeData::operator==(const ValueTypeData &o)
267 return flags == o.flags &&
268 valueTypeCoreIdx == o.valueTypeCoreIdx &&
269 valueTypePropType == o.valueTypePropType;
272 bool QDeclarativePropertyCache::isAllowedInRevision(Data *data) const
274 return (data->metaObjectOffset == -1 && data->revision == 0) ||
275 (allowedRevisionCache[data->metaObjectOffset] >= data->revision);
278 QDeclarativeEngine *QDeclarativePropertyCache::qmlEngine() const
283 QDeclarativePropertyCache::Data *QDeclarativePropertyCache::property(const QHashedV8String &str) const
285 QDeclarativePropertyCache::Data **rv = stringCache.value(str);
286 if (rv && (*rv)->notFullyResolved()) resolve(*rv);
292 #endif // QDECLARATIVEPROPERTYCACHE_P_H