void QgsDualView::modifySort()
{
if ( !mLayer )
return;
QgsAttributeTableConfig config = mConfig;
QDialog orderByDlg;
orderByDlg.setWindowTitle( tr( "Configure Attribute Table Sort Order" ) );
QDialogButtonBox *dialogButtonBox = new QDialogButtonBox( QDialogButtonBox::Ok | QDialogButtonBox::Cancel );
QGridLayout *layout = new QGridLayout();
connect( dialogButtonBox, &QDialogButtonBox::accepted, &orderByDlg, &QDialog::accept );
connect( dialogButtonBox, &QDialogButtonBox::rejected, &orderByDlg, &QDialog::reject );
orderByDlg.setLayout( layout );
QGroupBox *sortingGroupBox = new QGroupBox();
sortingGroupBox->setTitle( tr( "Defined sort order in attribute table" ) );
sortingGroupBox->setCheckable( true );
sortingGroupBox->setChecked( !sortExpression().isEmpty() );
layout->addWidget( sortingGroupBox );
sortingGroupBox->setLayout( new QGridLayout() );
QgsExpressionBuilderWidget *expressionBuilder = new QgsExpressionBuilderWidget();
QgsExpressionContext context( QgsExpressionContextUtils::globalProjectLayerScopes( mLayer ) );
expressionBuilder->setExpressionContext( context );
expressionBuilder->setLayer( mLayer );
expressionBuilder->loadFieldNames();
expressionBuilder->loadRecent( QStringLiteral( "generic" ) );
expressionBuilder->setExpressionText( sortExpression().isEmpty() ? mLayer->displayExpression() : sortExpression() );
sortingGroupBox->layout()->addWidget( expressionBuilder );
QCheckBox *cbxSortAscending = new QCheckBox( tr( "Sort ascending" ) );
cbxSortAscending->setChecked( config.sortOrder() == Qt::AscendingOrder );
sortingGroupBox->layout()->addWidget( cbxSortAscending );
layout->addWidget( dialogButtonBox );
if ( orderByDlg.exec() )
{
Qt::SortOrder sortOrder = cbxSortAscending->isChecked() ? Qt::AscendingOrder : Qt::DescendingOrder;
if ( sortingGroupBox->isChecked() )
{
setSortExpression( expressionBuilder->expressionText(), sortOrder );
config.setSortExpression( expressionBuilder->expressionText() );
config.setSortOrder( sortOrder );
}
else
{
setSortExpression( QString(), sortOrder );
config.setSortExpression( QString() );
}
setAttributeTableConfig( config );
}
}
void QgsDualView::onSortColumnChanged()
{
QgsAttributeTableConfig cfg = attributeTableConfig();
if ( cfg.sortExpression() != mFilterModel->sortExpression() ||
cfg.sortOrder() != mFilterModel->sortOrder() )
{
cfg.setSortExpression( mFilterModel->sortExpression() );
cfg.setSortOrder( mFilterModel->sortOrder() );
setAttributeTableConfig( cfg );
}
}
void QgsAttributeTableFilterModel::setAttributeTableConfig( const QgsAttributeTableConfig& config )
{
mConfig = config;
mConfig.update( layer()->fields() );
QVector<int> newColumnMapping;
Q_FOREACH ( const QgsAttributeTableConfig::ColumnConfig& columnConfig, mConfig.columns() )
{
// Hidden? Forget about this column
if ( columnConfig.hidden )
continue;
// The new value for the mapping (field index or -1 for action column)
int newValue = ( columnConfig.type == QgsAttributeTableConfig::Action ) ? -1 : layer()->fieldNameIndex( columnConfig.name );
newColumnMapping << newValue;
}
if ( newColumnMapping != mColumnMapping )
{
bool requiresReset = false;
int firstRemovedColumn = -1;
int removedColumnCount = 0;
// Check if there have a contiguous set of columns have been removed or if we require a full reset
for ( int i = 0; i < qMin( newColumnMapping.size(), mColumnMapping.size() - removedColumnCount ); ++i )
{
if ( newColumnMapping.at( i ) == mColumnMapping.at( i + removedColumnCount ) )
continue;
if ( firstRemovedColumn == -1 )
{
firstRemovedColumn = i;
while ( i < mColumnMapping.size() - removedColumnCount && mColumnMapping.at( i + removedColumnCount ) != newColumnMapping.at( i ) )
{
++removedColumnCount;
}
}
else
{
requiresReset = true;
break;
}
}
// No difference found so far
if ( firstRemovedColumn == -1 )
{
if ( newColumnMapping.size() > mColumnMapping.size() )
{
// More columns: appended to the end
beginInsertColumns( QModelIndex(), mColumnMapping.size(), newColumnMapping.size() - 1 );
mColumnMapping = newColumnMapping;
endInsertColumns();
}
else
{
// Less columns: removed from the end
beginRemoveColumns( QModelIndex(), newColumnMapping.size(), mColumnMapping.size() - 1 );
mColumnMapping = newColumnMapping;
endRemoveColumns();
}
}
else
{
if ( newColumnMapping.size() == mColumnMapping.size() - removedColumnCount )
{
beginRemoveColumns( QModelIndex(), firstRemovedColumn, firstRemovedColumn + removedColumnCount );
mColumnMapping = newColumnMapping;
endRemoveColumns();
}
else
{
requiresReset = true;
}
}
if ( requiresReset )
{
beginResetModel();
mColumnMapping = newColumnMapping;
endResetModel();
}
}
sort( config.sortExpression(), config.sortOrder() );
}
