1 files changed, 279 insertions, 0 deletions
diff --git a/src/qml/qml/v8/qv8variantwrapper.cpp b/src/qml/qml/v8/qv8variantwrapper.cpp
new file mode 100644
index 0000000000..4b1fc643f6
--- /dev/null
+++ b/src/qml/qml/v8/qv8variantwrapper.cpp
@@ -0,0 +1,279 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qv8variantwrapper_p.h"
+#include "qv8variantresource_p.h"
+#include "qv8engine_p.h"
+#include <private/qqmlengine_p.h>
+
+QT_BEGIN_NAMESPACE
+
+QV8VariantResource::QV8VariantResource(QV8Engine *engine, const QVariant &data)
+: QV8ObjectResource(engine), QQmlEnginePrivate::ScarceResourceData(data), m_isScarceResource(false), m_vmePropertyReferenceCount(0)
+{
+}
+
+void QV8VariantResource::addVmePropertyReference()
+{
+    if (m_isScarceResource && ++m_vmePropertyReferenceCount == 1) {
+        // remove from the ep->scarceResources list
+        // since it is now no longer eligible to be
+        // released automatically by the engine.
+        node.remove();
+    }
+}
+
+void QV8VariantResource::removeVmePropertyReference()
+{
+    if (m_isScarceResource && --m_vmePropertyReferenceCount == 0) {
+        // and add to the ep->scarceResources list
+        // since it is now eligible to be released
+        // automatically by the engine.
+        QQmlEnginePrivate::get(engine->engine())->scarceResources.insert(this);
+    }
+}
+
+QV8VariantWrapper::QV8VariantWrapper()
+: m_engine(0)
+{
+}
+
+QV8VariantWrapper::~QV8VariantWrapper()
+{
+}
+
+void QV8VariantWrapper::init(QV8Engine *engine)
+{
+    m_engine = engine;
+    m_toString = qPersistentNew<v8::Function>(v8::FunctionTemplate::New(ToString)->GetFunction());
+    m_valueOf = qPersistentNew<v8::Function>(v8::FunctionTemplate::New(ValueOf)->GetFunction());
+
+    {
+    v8::Local<v8::FunctionTemplate> ft = v8::FunctionTemplate::New();
+    ft->InstanceTemplate()->SetFallbackPropertyHandler(Getter, Setter);
+    ft->InstanceTemplate()->SetHasExternalResource(true);
+    ft->InstanceTemplate()->MarkAsUseUserObjectComparison();
+    ft->InstanceTemplate()->SetAccessor(v8::String::New("toString"), ToStringGetter, 0, 
+                                        m_toString, v8::DEFAULT, 
+                                        v8::PropertyAttribute(v8::ReadOnly | v8::DontDelete));
+    ft->InstanceTemplate()->SetAccessor(v8::String::New("valueOf"), ValueOfGetter, 0,
+                                        m_valueOf, v8::DEFAULT,
+                                        v8::PropertyAttribute(v8::ReadOnly | v8::DontDelete));
+    m_constructor = qPersistentNew<v8::Function>(ft->GetFunction());
+    }
+    {
+    m_preserve = qPersistentNew<v8::Function>(v8::FunctionTemplate::New(Preserve)->GetFunction());
+    m_destroy = qPersistentNew<v8::Function>(v8::FunctionTemplate::New(Destroy)->GetFunction());
+    v8::Local<v8::FunctionTemplate> ft = v8::FunctionTemplate::New();
+    ft->InstanceTemplate()->SetFallbackPropertyHandler(Getter, Setter);
+    ft->InstanceTemplate()->SetHasExternalResource(true);
+    ft->InstanceTemplate()->MarkAsUseUserObjectComparison();
+    ft->InstanceTemplate()->SetAccessor(v8::String::New("preserve"), PreserveGetter, 0, 
+                                        m_preserve, v8::DEFAULT, 
+                                        v8::PropertyAttribute(v8::ReadOnly | v8::DontDelete));
+    ft->InstanceTemplate()->SetAccessor(v8::String::New("destroy"), DestroyGetter, 0, 
+                                        m_destroy, v8::DEFAULT, 
+                                        v8::PropertyAttribute(v8::ReadOnly | v8::DontDelete));
+    ft->InstanceTemplate()->SetAccessor(v8::String::New("toString"), ToStringGetter, 0, 
+                                        m_toString, v8::DEFAULT, 
+                                        v8::PropertyAttribute(v8::ReadOnly | v8::DontDelete));
+    ft->InstanceTemplate()->SetAccessor(v8::String::New("valueOf"), ValueOfGetter, 0,
+                                        m_valueOf, v8::DEFAULT,
+                                        v8::PropertyAttribute(v8::ReadOnly | v8::DontDelete));
+    m_scarceConstructor = qPersistentNew<v8::Function>(ft->GetFunction());
+    }
+
+}
+
+void QV8VariantWrapper::destroy()
+{
+    qPersistentDispose(m_valueOf);
+    qPersistentDispose(m_toString);
+    qPersistentDispose(m_destroy);
+    qPersistentDispose(m_preserve);
+    qPersistentDispose(m_scarceConstructor);
+    qPersistentDispose(m_constructor);
+}
+
+v8::Local<v8::Object> QV8VariantWrapper::newVariant(const QVariant &value)
+{
+    bool scarceResource = value.type() == QVariant::Pixmap ||
+                          value.type() == QVariant::Image;
+
+    // XXX NewInstance() should be optimized
+    v8::Local<v8::Object> rv;
+    QV8VariantResource *r = new QV8VariantResource(m_engine, value);
+
+    if (scarceResource) {
+        QQmlEnginePrivate *ep = QQmlEnginePrivate::get(m_engine->engine());
+        Q_ASSERT(ep->scarceResourcesRefCount);
+        rv = m_scarceConstructor->NewInstance();
+        r->m_isScarceResource = true;
+        ep->scarceResources.insert(r);
+    } else {
+        rv = m_constructor->NewInstance();
+    }
+
+    rv->SetExternalResource(r);
+    return rv;
+}
+
+bool QV8VariantWrapper::isVariant(v8::Handle<v8::Value> value)
+{
+    return value->IsObject() && v8_resource_cast<QV8VariantResource>(value->ToObject());
+}
+
+QVariant QV8VariantWrapper::toVariant(v8::Handle<v8::Object> obj)
+{
+    QV8VariantResource *r =  v8_resource_cast<QV8VariantResource>(obj);
+    return r?r->data:QVariant();
+}
+
+QVariant QV8VariantWrapper::toVariant(QV8ObjectResource *r)
+{
+    Q_ASSERT(r->resourceType() == QV8ObjectResource::VariantType);
+    return static_cast<QV8VariantResource *>(r)->data;
+}
+
+QVariant &QV8VariantWrapper::variantValue(v8::Handle<v8::Value> value)
+{
+    Q_ASSERT(isVariant(value));
+    QV8VariantResource *r =  v8_resource_cast<QV8VariantResource>(value->ToObject());
+    return static_cast<QV8VariantResource *>(r)->data;
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::Getter(v8::Local<v8::String> /* property */,
+                                                const v8::AccessorInfo & /* info */)
+{
+    return v8::Handle<v8::Value>();
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::Setter(v8::Local<v8::String> /* property */,
+                                                v8::Local<v8::Value> value,
+                                                const v8::AccessorInfo & /* info */)
+{
+    return value;
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::PreserveGetter(v8::Local<v8::String> property, 
+                                                        const v8::AccessorInfo &info)
+{
+    Q_UNUSED(property);
+    return info.Data();
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::DestroyGetter(v8::Local<v8::String> property, 
+                                                       const v8::AccessorInfo &info)
+{
+    Q_UNUSED(property);
+    return info.Data();
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::ToStringGetter(v8::Local<v8::String> property, 
+                                                        const v8::AccessorInfo &info)
+{
+    Q_UNUSED(property);
+    return info.Data();
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::ValueOfGetter(v8::Local<v8::String> property,
+                                                       const v8::AccessorInfo &info)
+{
+    Q_UNUSED(property);
+    return info.Data();
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::Preserve(const v8::Arguments &args)
+{
+    QV8VariantResource *resource = v8_resource_cast<QV8VariantResource>(args.This());
+    if (resource) {
+        resource->node.remove();
+    }
+    return v8::Undefined();
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::Destroy(const v8::Arguments &args)
+{
+    QV8VariantResource *resource = v8_resource_cast<QV8VariantResource>(args.This());
+    if (resource) {
+        resource->data = QVariant();
+        resource->node.remove();
+    }
+    return v8::Undefined();
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::ToString(const v8::Arguments &args)
+{
+    QV8VariantResource *resource = v8_resource_cast<QV8VariantResource>(args.This());
+    if (resource) {
+        QString result = resource->data.toString();
+        if (result.isEmpty() && !resource->data.canConvert(QVariant::String))
+            result = QString::fromLatin1("QVariant(%0)").arg(QString::fromLatin1(resource->data.typeName()));
+        return resource->engine->toString(result);
+    } else {
+        return v8::Undefined();
+    }
+}
+
+v8::Handle<v8::Value> QV8VariantWrapper::ValueOf(const v8::Arguments &args)
+{
+    QV8VariantResource *resource = v8_resource_cast<QV8VariantResource>(args.This());
+    if (resource) {
+        QVariant v = resource->data;
+        switch (v.type()) {
+        case QVariant::Invalid:
+            return v8::Undefined();
+        case QVariant::String:
+            return resource->engine->toString(v.toString());
+        case QVariant::Int:
+        case QVariant::Double:
+        case QVariant::UInt:
+            return v8::Number::New(v.toDouble());
+        case QVariant::Bool:
+            return v8::Boolean::New(v.toBool());
+        default:
+            break;
+        }
+    }
+    return args.This();
+}
+
+QT_END_NAMESPACE