/****************************************************************************
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** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
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** Alternatively, this file may be used under the terms of the GNU
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****************************************************************************/

#include "sortmethod_p.h"
#include <Qt3DRenderer/qsortcriterion.h>
#include <Qt3DCore/qscenepropertychange.h>

QT_BEGIN_NAMESPACE

namespace Qt3D {

namespace Render {

SortMethod::SortMethod()
    : FrameGraphNode(FrameGraphNode::SortMethod)
{
}

void SortMethod::updateFromPeer(QNode *peer)
{
    QSortMethod *sortMethod = static_cast<QSortMethod *>(peer);
    m_criteria.clear();
    Q_FOREACH (QSortCriterion *c, sortMethod->criteria())
        m_criteria.append(c->id());
    setEnabled(sortMethod->isEnabled());
}

void SortMethod::sceneChangeEvent(const QSceneChangePtr &e)
{
    QScenePropertyChangePtr propertyChange = qSharedPointerCast<QScenePropertyChange>(e);
    if (propertyChange->propertyName() == QByteArrayLiteral("sortCriterion")) {
        QSortCriterion *c = propertyChange->value().value<QSortCriterion *>();
        if (c != Q_NULLPTR) {
            if (e->type() == NodeAdded)
                m_criteria.append(c->id());
            else if (e->type() == NodeRemoved)
                m_criteria.removeAll(c->id());
        }
    } else if (propertyChange->propertyName() == QByteArrayLiteral("enabled") && e->type() == NodeUpdated) {
        setEnabled(propertyChange->value().toBool());
    }
}

QList<QNodeId> SortMethod::criteria() const
{
    return m_criteria;
}

} // Render

} // Qt3D

QT_END_NAMESPACE
