/*
 *  Copyright (c) 2008 Cyrille Berger <cberger@cberger.net>
 *
 *  This program 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 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "kis_meta_data_filter_registry_model.h"
#include "kis_debug.h"

using namespace KisMetaData;

struct FilterRegistryModel::Private {
    QList<bool> enabled;
};

FilterRegistryModel::FilterRegistryModel()
        : KoGenericRegistryModel<const Filter*>(FilterRegistry::instance()), d(new Private)
{
    QList<QString> keys = FilterRegistry::instance()->keys();
    for (int i = 0; i < keys.size(); i++) {
        d->enabled.append(FilterRegistry::instance()->get(keys[i])->defaultEnabled());
    }
}

FilterRegistryModel::~FilterRegistryModel()
{
    delete d;
}

QVariant FilterRegistryModel::data(const QModelIndex &index, int role) const
{
    if (index.isValid()) {
        if (role == Qt::CheckStateRole) {
            if (d->enabled[index.row()]) return Qt::Checked;
            else return Qt::Unchecked;
        } else if (role == Qt::ToolTipRole) {
            return get(index)->description();
        }
    }
    return KoGenericRegistryModel<const Filter*>::data(index, role);
}

bool FilterRegistryModel::setData(const QModelIndex & index, const QVariant & value, int role)
{
    if (index.isValid()) {
        if (role == Qt::CheckStateRole) {
            d->enabled[index.row()] = value.toBool();
        }
    }
    return KoGenericRegistryModel<const Filter*>::setData(index, value, role);
}

Qt::ItemFlags FilterRegistryModel::flags(const QModelIndex &) const
{
    return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsUserCheckable;
}

QList<const Filter*> FilterRegistryModel::enabledFilters() const
{
    QList<const Filter*> enabledFilters;
    QList<QString> keys = FilterRegistry::instance()->keys();
    for (int i = 0; i < keys.size(); i++) {
        if (d->enabled[i]) {
            enabledFilters.append(FilterRegistry::instance()->get(keys[i]));
        }
    }
    return enabledFilters;
}
