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** General Public License version 2.0 or (at your option) the GNU General
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#include "statesetnode_p.h"

#include <Qt3DCore/qscenepropertychange.h>
#include <Qt3DRender/qstateset.h>
#include <Qt3DRender/private/genericstate_p.h>
#include <Qt3DRender/private/renderstateset_p.h>

QT_BEGIN_NAMESPACE

using namespace Qt3DCore;

namespace Qt3DRender {
namespace Render {

StateSetNode::StateSetNode()
    : FrameGraphNode(FrameGraphNode::StateSet)
{
}

StateSetNode::~StateSetNode()
{
}

void StateSetNode::updateFromPeer(Qt3DCore::QNode *peer)
{
    QStateSet *stateSet = static_cast<QStateSet*>(peer);

    setEnabled(stateSet->isEnabled());
    Q_FOREACH (QRenderState *renderState, stateSet->renderStates())
        appendRenderState(renderState->id(), RenderState::getOrCreateBackendState(renderState));
}

QList<RenderState *> StateSetNode::renderStates() const
{
    return m_renderStates.values();
}

void StateSetNode::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e)
{
    QScenePropertyChangePtr propertyChange = qSharedPointerCast<QScenePropertyChange>(e);
    switch (e->type()) {
    case NodeAdded: {
        if (propertyChange->propertyName() == QByteArrayLiteral("renderState")) {
            QNodePtr nodePtr = propertyChange->value().value<QNodePtr>();
            QRenderState *renderState = static_cast<QRenderState *>(nodePtr.data());
            appendRenderState(renderState->id(), RenderState::getOrCreateBackendState(renderState));
        }
    }
        break;

    case NodeRemoved: {
        if (propertyChange->propertyName() == QByteArrayLiteral("renderState"))
            removeRenderState(propertyChange->value().value<QNodeId>());
    }
        break;

    default:
        break;
    }
}

void StateSetNode::appendRenderState(const Qt3DCore::QNodeId &id, RenderState *renderState)
{
    if (!m_renderStates.contains(id))
        m_renderStates[id] = renderState;
}

void StateSetNode::removeRenderState(const Qt3DCore::QNodeId &renderStateId)
{
    m_renderStates.remove(renderStateId);
}

} // namespace Render

} // namespace Qt3DRender

QT_END_NAMESPACE