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/*
*
* Copyright (C) 2011 Michal Malek <michalm@jabster.pl>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.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.
* See the file "COPYING" for the exact licensing terms.
*/
#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
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