File indexing completed on 2024-06-09 05:30:57

 /*
     SPDX-FileCopyrightText: 2014 Eike Hein <hein@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #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();
 
         Q_EMIT countChanged();
 
         Q_EMIT sourceModelChanged();
         Q_EMIT descriptionChanged();
 
         return;
     }
 
     int oldCount = m_sourceModel->rowCount();
     int newCount = model->rowCount();
 
     auto setNewModel = [this, model]() {
         disconnectSignals();
         m_sourceModel = model;
         connectSignals();
     };
 
     if (newCount > oldCount) {
         beginInsertRows(QModelIndex(), oldCount, newCount - 1);
         setNewModel();
         endInsertRows();
     } else if (newCount < oldCount) {
         if (newCount == 0) {
             beginResetModel();
             setNewModel();
             endResetModel();
         } else {
             beginRemoveRows(QModelIndex(), newCount, oldCount - 1);
             setNewModel();
             endRemoveRows();
         }
     } else {
         setNewModel();
     }
 
     if (newCount > 0) {
         Q_EMIT dataChanged(index(0, 0), index(qMin(oldCount, newCount) - 1, 0));
     }
 
     if (oldCount != newCount) {
         Q_EMIT countChanged();
     }
 
     Q_EMIT sourceModelChanged();
     Q_EMIT descriptionChanged();
 }