1 /****************************************************************************
3 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4 ** All rights reserved.
5 ** Contact: Nokia Corporation (qt-info@nokia.com)
7 ** This file is part of the QtDeclarative module of the Qt Toolkit.
9 ** $QT_BEGIN_LICENSE:LGPL$
10 ** GNU Lesser General Public License Usage
11 ** This file may be used under the terms of the GNU Lesser General Public
12 ** License version 2.1 as published by the Free Software Foundation and
13 ** appearing in the file LICENSE.LGPL included in the packaging of this
14 ** file. Please review the following information to ensure the GNU Lesser
15 ** General Public License version 2.1 requirements will be met:
16 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
18 ** In addition, as a special exception, Nokia gives you certain additional
19 ** rights. These rights are described in the Nokia Qt LGPL Exception
20 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
22 ** GNU General Public License Usage
23 ** Alternatively, this file may be used under the terms of the GNU General
24 ** Public License version 3.0 as published by the Free Software Foundation
25 ** and appearing in the file LICENSE.GPL included in the packaging of this
26 ** file. Please review the following information to ensure the GNU General
27 ** Public License version 3.0 requirements will be met:
28 ** http://www.gnu.org/copyleft/gpl.html.
31 ** Alternatively, this file may be used in accordance with the terms and
32 ** conditions contained in a signed written agreement between you and Nokia.
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>
63 #include <QtScript/private/qscriptdeclarativeclass_p.h>
66 class QDeclarativeEngine;
69 class QV8QObjectWrapper;
71 class Q_DECLARATIVE_EXPORT QDeclarativePropertyCache : public QDeclarativeRefCount, public QDeclarativeCleanup
74 QDeclarativePropertyCache(QDeclarativeEngine *);
75 QDeclarativePropertyCache(QDeclarativeEngine *, const QMetaObject *);
76 virtual ~QDeclarativePropertyCache();
80 inline bool operator==(const Data &);
85 // Can apply to all properties, except IsFunction
86 IsConstant = 0x00000001, // Has CONST flag
87 IsWritable = 0x00000002, // Has WRITE function
88 IsResettable = 0x00000004, // Has RESET function
89 IsAlias = 0x00000008, // Is a QML alias to another property
90 IsFinal = 0x00000010, // Has FINAL flag
91 IsDirect = 0x00000020, // Exists on a C++ QMetaObject
93 // These are mutualy exclusive
94 IsFunction = 0x00000040, // Is an invokable
95 IsQObjectDerived = 0x00000080, // Property type is a QObject* derived type
96 IsEnumType = 0x00000100, // Property type is an enum
97 IsQList = 0x00000200, // Property type is a QML list
98 IsQmlBinding = 0x00000400, // Property type is a QDeclarativeBinding*
99 IsQScriptValue = 0x00000800, // Property type is a QScriptValue
100 IsV8Handle = 0x00001000, // Property type is a QDeclarativeV8Handle
102 // Apply only to IsFunctions
103 IsVMEFunction = 0x00002000, // Function was added by QML
104 HasArguments = 0x00004000, // Function takes arguments
105 IsSignal = 0x00008000, // Function is a signal
106 IsVMESignal = 0x00010000, // Signal was added by QML
107 IsV8Function = 0x00020000, // Function takes QDeclarativeV8Function* args
109 // Internal QDeclarativePropertyCache flags
110 NotFullyResolved = 0x00040000 // 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 isQScriptValue() const { return flags & IsQScriptValue; }
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; }
139 int propType; // When !NotFullyResolved
140 const char *propTypeName; // When NotFullyResolved
144 int notifyIndex; // When !IsFunction
145 int relatedIndex; // When IsFunction
147 uint overrideIndexIsProperty : 1;
148 int overrideIndex : 31;
150 int metaObjectOffset;
152 static Flags flagsForProperty(const QMetaProperty &, QDeclarativeEngine *engine = 0);
153 void load(const QMetaProperty &, QDeclarativeEngine *engine = 0);
154 void load(const QMetaMethod &);
155 QString name(QObject *);
156 QString name(const QMetaObject *);
159 void lazyLoad(const QMetaProperty &, QDeclarativeEngine *engine = 0);
160 void lazyLoad(const QMetaMethod &);
161 bool notFullyResolved() const { return flags & NotFullyResolved; }
162 friend class QDeclarativePropertyCache;
166 struct ValueTypeData {
167 inline ValueTypeData();
168 inline bool operator==(const ValueTypeData &);
169 Data::Flags flags; // flags of the access property on the value type proxy object
170 int valueTypeCoreIdx; // The prop index of the access property on the value type proxy object
171 int valueTypePropType; // The QVariant::Type of access property on the value type proxy object
174 void update(QDeclarativeEngine *, const QMetaObject *);
176 QDeclarativePropertyCache *copy();
177 void append(QDeclarativeEngine *, const QMetaObject *, Data::Flag propertyFlags = Data::NoFlags,
178 Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags);
179 void append(QDeclarativeEngine *, const QMetaObject *, int revision, Data::Flag propertyFlags = Data::NoFlags,
180 Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags);
182 static Data create(const QMetaObject *, const QString &);
184 inline Data *property(const QHashedV8String &) const;
185 Data *property(const QString &) const;
186 Data *property(int) const;
187 Data *method(int) const;
188 QStringList propertyNames() const;
190 inline Data *overrideData(Data *) const;
191 inline bool isAllowedInRevision(Data *) const;
193 inline QDeclarativeEngine *qmlEngine() const;
194 static Data *property(QDeclarativeEngine *, QObject *, const QString &, Data &);
195 static Data *property(QDeclarativeEngine *, QObject *, const QHashedV8String &, Data &);
197 static bool isDynamicMetaObject(const QMetaObject *);
199 virtual void clear();
202 friend class QDeclarativeEnginePrivate;
203 friend class QV8QObjectWrapper;
205 // Implemented in v8/qv8qobjectwrapper.cpp
206 v8::Local<v8::Object> newQObject(QObject *, QV8Engine *);
208 typedef QVector<Data> IndexCache;
209 typedef QStringHash<Data *> StringCache;
210 typedef QVector<int> AllowedRevisionCache;
212 void resolve(Data *) const;
213 void updateRecur(QDeclarativeEngine *, const QMetaObject *);
215 QDeclarativeEngine *engine;
217 QDeclarativePropertyCache *parent;
218 int propertyIndexCacheStart;
219 int methodIndexCacheStart;
221 IndexCache propertyIndexCache;
222 IndexCache methodIndexCache;
223 StringCache stringCache;
224 AllowedRevisionCache allowedRevisionCache;
225 v8::Persistent<v8::Function> constructor;
227 Q_DECLARE_OPERATORS_FOR_FLAGS(QDeclarativePropertyCache::Data::Flags);
229 QDeclarativePropertyCache::Data::Data()
230 : propType(0), coreIndex(-1), notifyIndex(-1), overrideIndexIsProperty(false), overrideIndex(-1),
231 revision(0), metaObjectOffset(-1), flags(0)
235 bool QDeclarativePropertyCache::Data::operator==(const QDeclarativePropertyCache::Data &other)
237 return flags == other.flags &&
238 propType == other.propType &&
239 coreIndex == other.coreIndex &&
240 notifyIndex == other.notifyIndex &&
241 revision == other.revision;
244 QDeclarativePropertyCache::Data *
245 QDeclarativePropertyCache::overrideData(Data *data) const
247 if (data->overrideIndex < 0)
250 if (data->overrideIndexIsProperty)
251 return property(data->overrideIndex);
253 return method(data->overrideIndex);
256 QDeclarativePropertyCache::ValueTypeData::ValueTypeData()
257 : flags(QDeclarativePropertyCache::Data::NoFlags), valueTypeCoreIdx(-1), valueTypePropType(0)
261 bool QDeclarativePropertyCache::ValueTypeData::operator==(const ValueTypeData &o)
263 return flags == o.flags &&
264 valueTypeCoreIdx == o.valueTypeCoreIdx &&
265 valueTypePropType == o.valueTypePropType;
268 bool QDeclarativePropertyCache::isAllowedInRevision(Data *data) const
270 return (data->metaObjectOffset == -1 && data->revision == 0) ||
271 (allowedRevisionCache[data->metaObjectOffset] >= data->revision);
274 QDeclarativeEngine *QDeclarativePropertyCache::qmlEngine() const
279 QDeclarativePropertyCache::Data *QDeclarativePropertyCache::property(const QHashedV8String &str) const
281 QDeclarativePropertyCache::Data **rv = stringCache.value(str);
282 if (rv && (*rv)->notFullyResolved()) resolve(*rv);
288 #endif // QDECLARATIVEPROPERTYCACHE_P_H