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/****************************************************************************
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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** This file is part of the QtQml module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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****************************************************************************/
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#ifndef QQMLVMEMETAOBJECT_P_H
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#define QQMLVMEMETAOBJECT_P_H
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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#include <QtCore/QMetaObject>
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#include <QtCore/QBitArray>
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#include <QtCore/QPair>
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#include <QtGui/QColor>
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#include <QtCore/QDate>
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#include <QtCore/qlist.h>
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#include <QtCore/qdebug.h>
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#include <private/qobject_p.h>
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#include "qqmlguard_p.h"
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#include "qqmlcompiler_p.h"
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#include "qqmlcontext_p.h"
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#include <private/qv8engine_p.h>
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#include <private/qv8_p.h>
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#define QML_ALIAS_FLAG_PTR 0x00000001
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struct QQmlVMEMetaData
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short varPropertyCount;
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short dummyForAlignment; // Add padding to ensure that the following
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// AliasData/PropertyData/MethodData is int aligned.
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bool isObjectAlias() const {
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return propertyIdx == -1;
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bool isPropertyAlias() const {
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return !isObjectAlias() && !(propertyIdx & 0xFF000000);
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bool isValueTypeAlias() const {
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return !isObjectAlias() && (propertyIdx & 0xFF000000);
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int propertyIndex() const {
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return propertyIdx & 0x0000FFFF;
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int valueTypeIndex() const {
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return (propertyIdx & 0x00FF0000) >> 16;
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int valueType() const {
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return ((unsigned int)propertyIdx) >> 24;
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struct PropertyData {
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PropertyData *propertyData() const {
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return (PropertyData *)(((const char *)this) + sizeof(QQmlVMEMetaData));
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AliasData *aliasData() const {
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return (AliasData *)(propertyData() + propertyCount);
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MethodData *methodData() const {
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return (MethodData *)(aliasData() + aliasCount);
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class QQmlVMEMetaObject;
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class QQmlVMEVariantQObjectPtr : public QQmlGuard<QObject>
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inline QQmlVMEVariantQObjectPtr();
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inline ~QQmlVMEVariantQObjectPtr();
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inline void objectDestroyed(QObject *);
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inline void setGuardedValue(QObject *obj, QQmlVMEMetaObject *target, int index);
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QQmlVMEMetaObject *m_target;
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class QV8QObjectWrapper;
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class QQmlVMEVariant;
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class QQmlVMEMetaObjectEndpoint;
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class Q_AUTOTEST_EXPORT QQmlVMEMetaObject : public QAbstractDynamicMetaObject,
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public QV8GCCallback::Node
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QQmlVMEMetaObject(QObject *obj, const QMetaObject *other, const QQmlVMEMetaData *data,
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QQmlCompiledData *compiledData);
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~QQmlVMEMetaObject();
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bool aliasTarget(int index, QObject **target, int *coreIndex, int *valueTypeIndex) const;
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void registerInterceptor(int index, int valueIndex, QQmlPropertyValueInterceptor *interceptor);
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v8::Handle<v8::Function> vmeMethod(int index);
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int vmeMethodLineNumber(int index);
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void setVmeMethod(int index, v8::Persistent<v8::Function>);
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v8::Handle<v8::Value> vmeProperty(int index);
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void setVMEProperty(int index, v8::Handle<v8::Value> v);
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void connectAliasSignal(int index);
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virtual int metaCall(QMetaObject::Call _c, int _id, void **_a);
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friend class QQmlVMEMetaObjectEndpoint;
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friend class QQmlVMEVariantQObjectPtr;
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QQmlCompiledData *compiledData;
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QQmlGuardedContextData ctxt;
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const QQmlVMEMetaData *metaData;
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QQmlVMEVariant *data;
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QQmlVMEMetaObjectEndpoint *aliasEndpoints;
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v8::Persistent<v8::Array> varProperties;
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int firstVarPropertyIndex;
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bool varPropertiesInitialized;
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static void VarPropertiesWeakReferenceCallback(v8::Persistent<v8::Value> object, void* parameter);
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static void GcPrologueCallback(QV8GCCallback::Node *node);
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inline void allocateVarPropertiesArray();
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inline bool ensureVarPropertiesAllocated();
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void connectAlias(int aliasId);
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QBitArray aConnected;
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QBitArray aInterceptors;
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QHash<int, QPair<int, QQmlPropertyValueInterceptor*> > interceptors;
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v8::Persistent<v8::Function> *v8methods;
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v8::Handle<v8::Function> method(int);
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v8::Handle<v8::Value> readVarProperty(int);
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void writeVarProperty(int, v8::Handle<v8::Value>);
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QVariant readPropertyAsVariant(int);
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void writeProperty(int, const QVariant &);
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QAbstractDynamicMetaObject *parent;
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void listChanged(int);
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class List : public QList<QObject*>
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List(int lpi) : notifyIndex(lpi) {}
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QList<List> listProperties;
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static void list_append(QQmlListProperty<QObject> *, QObject *);
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static int list_count(QQmlListProperty<QObject> *);
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static QObject *list_at(QQmlListProperty<QObject> *, int);
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static void list_clear(QQmlListProperty<QObject> *);
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friend class QV8GCCallback;
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friend class QV8QObjectWrapper;
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#endif // QQMLVMEMETAOBJECT_P_H