* Copyright (C) 2014 by Eike Hein <hein@kde.org> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU 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 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 "funnelmodel.h"
FunnelModel::FunnelModel(QObject *parent) : ForwardingModel(parent)
{
}
FunnelModel::~FunnelModel()
{
}
void FunnelModel::setSourceModel(QAbstractItemModel *model)
{
if (model && m_sourceModel == model) {
return;
}
if (!model) {
reset();
return;
}
connect(model, SIGNAL(destroyed(QObject*)), this, SLOT(reset()));
if (!m_sourceModel) {
beginResetModel();
m_sourceModel = model;
connectSignals();
endResetModel();
emit countChanged();
emit sourceModelChanged();
emit descriptionChanged();
return;
}
int oldCount = m_sourceModel->rowCount();
int newCount = model->rowCount();
disconnectSignals();
m_sourceModel = model;
connectSignals();
if (newCount > oldCount) {
beginInsertRows(QModelIndex(), oldCount, newCount - 1);
endInsertRows();
} else if (newCount < oldCount) {
if (newCount == 0) {
beginResetModel();
endResetModel();
} else {
beginRemoveRows(QModelIndex(), newCount, oldCount - 1);
endRemoveRows();
}
}
if (newCount > 0) {
emit dataChanged(index(0, 0), index(qMin(oldCount, newCount) - 1, 0));
}
if (oldCount != newCount) {
emit countChanged();
}
emit sourceModelChanged();
emit descriptionChanged();
}
