/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qqmllistwrapper_p.h"
#include <private/qv8engine_p.h>
#include <private/qqmllist_p.h>
#include <private/qv4objectproto_p.h>

#include <private/qv4functionobject_p.h>

QT_BEGIN_NAMESPACE

using namespace QV4;

DEFINE_OBJECT_VTABLE(QmlListWrapper);

QmlListWrapper::Data::Data(QV8Engine *engine)
    : Object::Data(QV8Engine::getV4(engine))
    , v8(engine)
{
    setVTable(staticVTable());

    QV4::Scope scope(QV8Engine::getV4(engine));
    QV4::ScopedObject o(scope, this);
    o->setArrayType(ArrayData::Custom);
}

QmlListWrapper::Data::~Data()
{
}

ReturnedValue QmlListWrapper::create(QV8Engine *v8, QObject *object, int propId, int propType)
{
    if (!object || propId == -1)
        return Encode::null();

    ExecutionEngine *v4 = QV8Engine::getV4(v8);
    Scope scope(v4);

    Scoped<QmlListWrapper> r(scope, v4->memoryManager->alloc<QmlListWrapper>(v8));
    r->d()->object = object;
    r->d()->propertyType = propType;
    void *args[] = { &r->d()->property, 0 };
    QMetaObject::metacall(object, QMetaObject::ReadProperty, propId, args);
    return r.asReturnedValue();
}

ReturnedValue QmlListWrapper::create(QV8Engine *v8, const QQmlListProperty<QObject> &prop, int propType)
{
    ExecutionEngine *v4 = QV8Engine::getV4(v8);
    Scope scope(v4);

    Scoped<QmlListWrapper> r(scope, v4->memoryManager->alloc<QmlListWrapper>(v8));
    r->d()->object = prop.object;
    r->d()->property = prop;
    r->d()->propertyType = propType;
    return r.asReturnedValue();
}

QVariant QmlListWrapper::toVariant() const
{
    if (!d()->object)
        return QVariant();

    return QVariant::fromValue(QQmlListReferencePrivate::init(d()->property, d()->propertyType, d()->v8->engine()));
}


ReturnedValue QmlListWrapper::get(Managed *m, String *name, bool *hasProperty)
{
    QV4::ExecutionEngine *v4 = m->engine();
    QmlListWrapper *w = m->as<QmlListWrapper>();
    if (!w)
        return v4->currentContext()->throwTypeError();

    if (name->equals(v4->id_length) && !w->d()->object.isNull()) {
        quint32 count = w->d()->property.count ? w->d()->property.count(&w->d()->property) : 0;
        return Primitive::fromUInt32(count).asReturnedValue();
    }

    uint idx = name->asArrayIndex();
    if (idx != UINT_MAX)
        return getIndexed(m, idx, hasProperty);

    return Object::get(m, name, hasProperty);
}

ReturnedValue QmlListWrapper::getIndexed(Managed *m, uint index, bool *hasProperty)
{
    Q_UNUSED(hasProperty);

    QV4::ExecutionEngine *e = m->engine();
    QmlListWrapper *w = m->as<QmlListWrapper>();
    if (!w) {
        if (hasProperty)
            *hasProperty = false;
        return e->currentContext()->throwTypeError();
    }

    quint32 count = w->d()->property.count ? w->d()->property.count(&w->d()->property) : 0;
    if (index < count && w->d()->property.at) {
        if (hasProperty)
            *hasProperty = true;
        return QV4::QObjectWrapper::wrap(e, w->d()->property.at(&w->d()->property, index));
    }

    if (hasProperty)
        *hasProperty = false;
    return Primitive::undefinedValue().asReturnedValue();
}

void QmlListWrapper::put(Managed *m, String *name, const ValueRef value)
{
    // doesn't do anything. Should we throw?
    Q_UNUSED(m);
    Q_UNUSED(name);
    Q_UNUSED(value);
}

void QmlListWrapper::destroy(Managed *that)
{
    QmlListWrapper *w = that->as<QmlListWrapper>();
    w->d()->~Data();
}

void QmlListWrapper::advanceIterator(Managed *m, ObjectIterator *it, String *&name, uint *index, Property *p, PropertyAttributes *attrs)
{
    name = (String *)0;
    *index = UINT_MAX;
    QmlListWrapper *w = m->as<QmlListWrapper>();
    quint32 count = w->d()->property.count ? w->d()->property.count(&w->d()->property) : 0;
    if (it->arrayIndex < count) {
        *index = it->arrayIndex;
        ++it->arrayIndex;
        *attrs = QV4::Attr_Data;
        p->value = QV4::QObjectWrapper::wrap(w->engine(), w->d()->property.at(&w->d()->property, *index));
        return;
    }
    return QV4::Object::advanceIterator(m, it, name, index, p, attrs);
}

QT_END_NAMESPACE