/*  This file is part of the KDE project

    Copyright (C) 2005-2007 Matthias Kretz <kretz@kde.org>

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) version 3, or any

    later version accepted by the membership of KDE e.V. (or its

    successor approved by the membership of KDE e.V.), Nokia Corporation

    (or its successors, if any) and the KDE Free Qt Foundation, which shall

    act as a proxy defined in Section 6 of version 3 of the license.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public 

    License along with this library.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "effect.h"

#include "effect_p.h"

#include "effectparameter.h"

#include "effectinterface.h"

#include "factory_p.h"

#define PHONON_INTERFACENAME EffectInterface

QT_BEGIN_NAMESPACE

#ifndef QT_NO_PHONON_EFFECT

namespace Phonon

{

Effect::~Effect()

{

}

Effect::Effect(const EffectDescription &description, QObject *parent)

    : QObject(parent), MediaNode(*new EffectPrivate)

{

    K_D(Effect);

    d->description = description;

    d->createBackendObject();

}

Effect::Effect(EffectPrivate &dd, QObject *parent)

    : QObject(parent), MediaNode(dd)

{

}

void EffectPrivate::createBackendObject()

{

    if (m_backendObject)

        return;

    Q_Q(Effect);

    m_backendObject = Factory::createEffect(description.index(), q);

    if (m_backendObject) {

        setupBackendObject();

    }

}

//X Effect::Type Effect::type() const

//X {

//X     K_D(const Effect);

//X     return d->type;

//X }

//X 

EffectDescription Effect::description() const

{

    K_D(const Effect);

    return d->description;

}

QList<EffectParameter> Effect::parameters() const

{

    K_D(const Effect);

    // there should be an iface object, but better be safe for those backend

    // switching corner-cases: when the backend switches the new backend might

    // not support this effect -> no iface object

    if (d->m_backendObject) {

        return INTERFACE_CALL(parameters());

    }

    return QList<EffectParameter>();

}

QVariant Effect::parameterValue(const EffectParameter &param) const

{

    K_D(const Effect);

    if (!d->m_backendObject) {

        return d->parameterValues[param];

    }

    return INTERFACE_CALL(parameterValue(param));

}

void Effect::setParameterValue(const EffectParameter &param, const QVariant &newValue)

{

    K_D(Effect);

    d->parameterValues[param] = newValue;

    if (d->backendObject()) {

        INTERFACE_CALL(setParameterValue(param, newValue));

    }

}

bool EffectPrivate::aboutToDeleteBackendObject()

{

    if (m_backendObject) {

        const QList<EffectParameter> parameters = pINTERFACE_CALL(parameters());

        for (int i = 0; i < parameters.count(); ++i) {

            const EffectParameter &p = parameters.at(i);

            parameterValues[p] = pINTERFACE_CALL(parameterValue(p));

        }

    }

    return true;

}

void EffectPrivate::setupBackendObject()

{

    Q_ASSERT(m_backendObject);

    // set up attributes

    const QList<EffectParameter> parameters = pINTERFACE_CALL(parameters());

    for (int i = 0; i < parameters.count(); ++i) {

        const EffectParameter &p = parameters.at(i);

        pINTERFACE_CALL(setParameterValue(p, parameterValues[p]));

    }

}

} //namespace Phonon

#endif //QT_NO_PHONON_EFFECT

QT_END_NAMESPACE

#include "moc_effect.cpp"

// vim: sw=4 ts=4 tw=80