File indexing completed on 2024-06-16 05:09:56

 /*
     SPDX-FileCopyrightText: 2015 Eike Hein <hein@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "forwardingmodel.h"
 
 ForwardingModel::ForwardingModel(QObject *parent)
     : AbstractModel(parent)
 {
 }
 
 ForwardingModel::~ForwardingModel()
 {
 }
 
 QString ForwardingModel::description() const
 {
     if (!m_sourceModel) {
         return QString();
     }
 
     AbstractModel *abstractModel = qobject_cast<AbstractModel *>(m_sourceModel);
 
     if (!abstractModel) {
         return QString();
     }
 
     return abstractModel->description();
 }
 
 QAbstractItemModel *ForwardingModel::sourceModel() const
 {
     return m_sourceModel;
 }
 
 void ForwardingModel::setSourceModel(QAbstractItemModel *sourceModel)
 {
     disconnectSignals();
 
     beginResetModel();
 
     m_sourceModel = sourceModel;
 
     connectSignals();
 
     endResetModel();
 
     Q_EMIT countChanged();
     Q_EMIT sourceModelChanged();
     Q_EMIT descriptionChanged();
 }
 
 bool ForwardingModel::canFetchMore(const QModelIndex &parent) const
 {
     if (!m_sourceModel) {
         return false;
     }
 
     return m_sourceModel->canFetchMore(indexToSourceIndex(parent));
 }
 
 void ForwardingModel::fetchMore(const QModelIndex &parent)
 {
     if (m_sourceModel) {
         m_sourceModel->fetchMore(indexToSourceIndex(parent));
     }
 }
 
 QModelIndex ForwardingModel::index(int row, int column, const QModelIndex &parent) const
 {
     Q_UNUSED(parent)
 
     if (!m_sourceModel) {
         return QModelIndex();
     }
 
     return createIndex(row, column);
 }
 
 QModelIndex ForwardingModel::parent(const QModelIndex &index) const
 {
     Q_UNUSED(index)
 
     return QModelIndex();
 }
 
 QVariant ForwardingModel::data(const QModelIndex &index, int role) const
 {
     if (!m_sourceModel) {
         return QVariant();
     }
 
     return m_sourceModel->data(indexToSourceIndex(index), role);
 }
 
 int ForwardingModel::rowCount(const QModelIndex &parent) const
 {
     if (!m_sourceModel) {
         return 0;
     }
 
     return m_sourceModel->rowCount(indexToSourceIndex(parent));
 }
 
 QModelIndex ForwardingModel::indexToSourceIndex(const QModelIndex &index) const
 {
     if (!m_sourceModel || !index.isValid()) {
         return QModelIndex();
     }
 
     return m_sourceModel->index(index.row(), index.column(), index.parent().isValid() ? indexToSourceIndex(index.parent()) : QModelIndex());
 }
 
 bool ForwardingModel::trigger(int row, const QString &actionId, const QVariant &argument)
 {
     if (!m_sourceModel) {
         return false;
     }
 
     AbstractModel *abstractModel = qobject_cast<AbstractModel *>(m_sourceModel);
 
     if (!abstractModel) {
         return false;
     }
 
     return abstractModel->trigger(row, actionId, argument);
 }
 
 QString ForwardingModel::labelForRow(int row)
 {
     if (!m_sourceModel) {
         return QString();
     }
 
     AbstractModel *abstractModel = qobject_cast<AbstractModel *>(m_sourceModel);
 
     if (!abstractModel) {
         return QString();
     }
 
     return abstractModel->labelForRow(row);
 }
 
 AbstractModel *ForwardingModel::modelForRow(int row)
 {
     if (!m_sourceModel) {
         return nullptr;
     }
 
     AbstractModel *abstractModel = qobject_cast<AbstractModel *>(m_sourceModel);
 
     if (!abstractModel) {
         return nullptr;
     }
 
     return abstractModel->modelForRow(row);
 }
 
 AbstractModel *ForwardingModel::favoritesModel()
 {
     AbstractModel *sourceModel = qobject_cast<AbstractModel *>(m_sourceModel);
 
     if (sourceModel) {
         return sourceModel->favoritesModel();
     }
 
     return AbstractModel::favoritesModel();
 }
 
 int ForwardingModel::separatorCount() const
 {
     if (!m_sourceModel) {
         return 0;
     }
 
     AbstractModel *abstractModel = qobject_cast<AbstractModel *>(m_sourceModel);
 
     if (!abstractModel) {
         return 0;
     }
 
     return abstractModel->separatorCount();
 }
 
 void ForwardingModel::reset()
 {
     beginResetModel();
     endResetModel();
 
     Q_EMIT countChanged();
     Q_EMIT separatorCountChanged();
 }
 
 void ForwardingModel::connectSignals()
 {
     if (!m_sourceModel) {
         return;
     }
 
     connect(m_sourceModel, SIGNAL(destroyed()), this, SLOT(reset()));
     connect(m_sourceModel.data(), &QAbstractItemModel::dataChanged, this, &QAbstractItemModel::dataChanged, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::rowsAboutToBeInserted, this, &QAbstractItemModel::rowsAboutToBeInserted, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::rowsAboutToBeMoved, this, &QAbstractItemModel::rowsAboutToBeMoved, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::rowsAboutToBeRemoved, this, &QAbstractItemModel::rowsAboutToBeRemoved, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::layoutAboutToBeChanged, this, &QAbstractItemModel::layoutAboutToBeChanged, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::rowsInserted, this, &QAbstractItemModel::rowsInserted, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::rowsInserted, this, &AbstractModel::countChanged, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::rowsMoved, this, &QAbstractItemModel::rowsMoved, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::rowsRemoved, this, &QAbstractItemModel::rowsRemoved, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::rowsRemoved, this, &AbstractModel::countChanged, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::modelAboutToBeReset, this, &QAbstractItemModel::modelAboutToBeReset, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::modelReset, this, &QAbstractItemModel::modelReset, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::modelReset, this, &AbstractModel::countChanged, Qt::UniqueConnection);
     connect(m_sourceModel.data(), &QAbstractItemModel::layoutChanged, this, &QAbstractItemModel::layoutChanged, Qt::UniqueConnection);
 }
 
 void ForwardingModel::disconnectSignals()
 {
     if (!m_sourceModel) {
         return;
     }
 
     disconnect(m_sourceModel, nullptr, this, nullptr);
 }