C++ (Cpp) QAbstractItemModel::parent示例

/*! \see QAbstractItemModel::setData */
bool SummaryHandlingProxyModel::setData( const QModelIndex& index, const QVariant& value, int role )
{
    QAbstractItemModel* model = sourceModel();
    if ( role==StartTimeRole || role==EndTimeRole ) {
        QModelIndex parentIdx = mapToSource( index );
        do {
            if ( d->isSummary(parentIdx) ) {
	      //qDebug() << "removing " << parentIdx << "from cache";
                d->removeFromCache( parentIdx );
                QModelIndex proxyParentIdx = mapFromSource( parentIdx );
                emit dataChanged( proxyParentIdx, proxyParentIdx );
            }
        } while ( ( parentIdx=model->parent( parentIdx ) ) != QModelIndex() );
    }
    return BASE::setData( index, value, role );
}

示例#2

显示文件

文件： kdganttsummaryhandlingproxymodel.cpp 项目： abhishekmurthy/Calligra

void SummaryHandlingProxyModel::sourceDataChanged( const QModelIndex& from, const QModelIndex& to )
{
    QAbstractItemModel* model = sourceModel();
    QModelIndex parentIdx = from;
    do {
        const QModelIndex& dataIdx = parentIdx;
        if ( model->data( dataIdx, ItemTypeRole )==TypeSummary ) {
            //qDebug() << "removing " << parentIdx << "from cache";
            d->removeFromCache( dataIdx );
            QModelIndex proxyDataIdx = mapFromSource( dataIdx );
            emit dataChanged( proxyDataIdx, proxyDataIdx );
        }
    } while ( ( parentIdx=model->parent( parentIdx ) ) != QModelIndex() );

    BASE::sourceDataChanged( from, to );
}