File indexing completed on 2024-04-28 08:42:26

 /* 
     SPDX-FileCopyrightText: 2011 Michal Malek <michalm@jabster.pl>
     SPDX-FileCopyrightText: 1998-2007 Sebastian Trueg <trueg@k3b.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "k3bmodelutils.h"
 #include <QModelIndex>
 
 namespace K3b
 {
 namespace ModelUtils
 {
     
     Qt::CheckState commonCheckState( const QModelIndexList& indexes )
     {
         int checked = 0;
         foreach( const QModelIndex& index, indexes ) {
             if ( index.data( Qt::CheckStateRole ).toInt() == Qt::Checked ) {
                 ++checked;
             }
         }
         
         if ( checked == 0 )
             return Qt::Unchecked;
         else if( checked == indexes.count() )
             return Qt::Checked;
         else
             return Qt::PartiallyChecked;
     }
     
     void toggleCommonCheckState( QAbstractItemModel* model, const QModelIndexList& indexes )
     {
         if ( model != 0 ) {
             Qt::CheckState commonState = commonCheckState( indexes );
             if ( commonState == Qt::Checked )
                 commonState = Qt::Unchecked;
             else
                 commonState = Qt::Checked;
             
             foreach( const QModelIndex& index, indexes ) {
                 model->setData( index, commonState, Qt::CheckStateRole );
             }
         }
     }
     
     QString commonText( const QModelIndexList& indexes, int role )
     {
         if ( !indexes.isEmpty() ) {
             QString firstData = indexes.first().data( role ).toString();
             for ( int i = 1; i < indexes.size(); ++i ) {
                 if ( indexes[i].data( role ).toString() != firstData )
                     return QString();
             }
             return firstData;
         }
         return QString();
     }
     
     void setCommonText( QAbstractItemModel* model, const QModelIndexList& indexes, const QString& value, int role )
     {
         if ( model != 0 ) {
             Q_FOREACH( QModelIndex index, indexes ) {
                 if( !value.isEmpty() || indexes.size() == 1 )
                     model->setData( index, value, role );
             }
         }
     }
     
 } // namespace ModelUtils
 } // namespace K3b