1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** All rights reserved.
5 ** Contact: http://www.qt-project.org/
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:
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31 ** Alternatively, this file may be used in accordance with the terms and
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40 ****************************************************************************/
42 #ifndef QDECLARATIVEVMEMETAOBJECT_P_H
43 #define QDECLARATIVEVMEMETAOBJECT_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 "qdeclarative.h"
58 #include <QtCore/QMetaObject>
59 #include <QtCore/QBitArray>
60 #include <QtCore/QPair>
61 #include <QtGui/QColor>
62 #include <QtCore/QDate>
63 #include <QtCore/qlist.h>
64 #include <QtCore/qdebug.h>
66 #include <private/qobject_p.h>
68 #include "qdeclarativeguard_p.h"
69 #include "qdeclarativecompiler_p.h"
70 #include "qdeclarativecontext_p.h"
72 #include <private/qv8engine_p.h>
74 #include <private/qv8_p.h>
78 #define QML_ALIAS_FLAG_PTR 0x00000001
80 struct QDeclarativeVMEMetaData
82 short varPropertyCount;
87 short dummyForAlignment; // Add padding to ensure that the following
88 // AliasData/PropertyData/MethodData is int aligned.
95 bool isObjectAlias() const {
96 return propertyIdx == -1;
98 bool isPropertyAlias() const {
99 return !isObjectAlias() && !(propertyIdx & 0xFF000000);
101 bool isValueTypeAlias() const {
102 return !isObjectAlias() && (propertyIdx & 0xFF000000);
104 int propertyIndex() const {
105 return propertyIdx & 0x0000FFFF;
107 int valueTypeIndex() const {
108 return (propertyIdx & 0x00FF0000) >> 16;
110 int valueType() const {
111 return ((unsigned int)propertyIdx) >> 24;
115 struct PropertyData {
126 PropertyData *propertyData() const {
127 return (PropertyData *)(((const char *)this) + sizeof(QDeclarativeVMEMetaData));
130 AliasData *aliasData() const {
131 return (AliasData *)(propertyData() + propertyCount);
134 MethodData *methodData() const {
135 return (MethodData *)(aliasData() + aliasCount);
139 class QV8QObjectWrapper;
140 class QDeclarativeVMEVariant;
141 class QDeclarativeRefCount;
142 class QDeclarativeVMEMetaObjectEndpoint;
143 class Q_AUTOTEST_EXPORT QDeclarativeVMEMetaObject : public QAbstractDynamicMetaObject,
144 public QV8GCCallback::Node
147 QDeclarativeVMEMetaObject(QObject *obj, const QMetaObject *other, const QDeclarativeVMEMetaData *data,
148 QDeclarativeCompiledData *compiledData);
149 ~QDeclarativeVMEMetaObject();
151 bool aliasTarget(int index, QObject **target, int *coreIndex, int *valueTypeIndex) const;
152 void registerInterceptor(int index, int valueIndex, QDeclarativePropertyValueInterceptor *interceptor);
153 v8::Handle<v8::Function> vmeMethod(int index);
154 int vmeMethodLineNumber(int index);
155 void setVmeMethod(int index, v8::Persistent<v8::Function>);
156 v8::Handle<v8::Value> vmeProperty(int index);
157 void setVMEProperty(int index, v8::Handle<v8::Value> v);
159 void connectAliasSignal(int index);
162 virtual int metaCall(QMetaObject::Call _c, int _id, void **_a);
165 friend class QDeclarativeVMEMetaObjectEndpoint;
168 QDeclarativeCompiledData *compiledData;
169 QDeclarativeGuardedContextData ctxt;
171 const QDeclarativeVMEMetaData *metaData;
175 QDeclarativeVMEVariant *data;
176 QDeclarativeVMEMetaObjectEndpoint *aliasEndpoints;
178 v8::Persistent<v8::Array> varProperties;
179 int firstVarPropertyIndex;
180 bool varPropertiesInitialized;
181 static void VarPropertiesWeakReferenceCallback(v8::Persistent<v8::Value> object, void* parameter);
182 static void GcPrologueCallback(QV8GCCallback::Node *node);
183 inline void allocateVarPropertiesArray();
184 inline void ensureVarPropertiesAllocated();
186 void connectAlias(int aliasId);
187 QBitArray aConnected;
188 QBitArray aInterceptors;
189 QHash<int, QPair<int, QDeclarativePropertyValueInterceptor*> > interceptors;
191 v8::Persistent<v8::Function> *v8methods;
192 v8::Handle<v8::Function> method(int);
194 v8::Handle<v8::Value> readVarProperty(int);
195 void writeVarProperty(int, v8::Handle<v8::Value>);
196 QVariant readPropertyAsVariant(int);
197 void writeProperty(int, const QVariant &);
199 QAbstractDynamicMetaObject *parent;
201 void listChanged(int);
202 class List : public QList<QObject*>
205 List(int lpi) : notifyIndex(lpi) {}
208 QList<List> listProperties;
210 static void list_append(QDeclarativeListProperty<QObject> *, QObject *);
211 static int list_count(QDeclarativeListProperty<QObject> *);
212 static QObject *list_at(QDeclarativeListProperty<QObject> *, int);
213 static void list_clear(QDeclarativeListProperty<QObject> *);
215 friend class QV8GCCallback;
216 friend class QV8QObjectWrapper;
221 #endif // QDECLARATIVEVMEMETAOBJECT_P_H