src/plugins/geometry_checker/qgsgeometrycheckerresulttab.cpp

/***************************************************************************
 *  qgsgeometrycheckerresulttab.cpp                                        *
 *  -------------------                                                    *
 *  copyright            : (C) 2014 by Sandro Mani / Sourcepole AG         *
 *  email                : smani@sourcepole.ch                             *
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#include <QComboBox>
#include <QFileDialog>
#include <QGroupBox>
#include <QMessageBox>
#include <QDialogButtonBox>
#include <QPlainTextEdit>

#include "qgsgeometrycheckcontext.h"
#include "qgsgeometrycheckerresulttab.h"
#include "qgsgeometrycheckfixdialog.h"

#include "qgsgeometrychecker.h"
#include "qgsgeometrycheck.h"
#include "qgsfeaturepool.h"
#include "qgsfileutils.h"

#include "qgsgeometry.h"
#include "qgisinterface.h"
#include "qgsmapcanvas.h"
#include "qgsproject.h"
#include "qgsproviderregistry.h"
#include "qgsrubberband.h"
#include "qgsvectorlayer.h"
#include "qgsvectordataprovider.h"
#include "qgsvectorfilewriter.h"
#include "qgsvscrollarea.h"
#include "qgssettings.h"
#include "qgsscrollarea.h"
#include "qgsgeometrycheckerror.h"
#include "qgsogrprovider.h"

QString QgsGeometryCheckerResultTab::sSettingsGroup = QStringLiteral( "/geometry_checker/default_fix_methods/" );

QgsGeometryCheckerResultTab::QgsGeometryCheckerResultTab( QgisInterface *iface, QgsGeometryChecker *checker, QTabWidget *tabWidget, QWidget *parent )
  : QWidget( parent )
  , mTabWidget( tabWidget )
  , mIface( iface )
  , mChecker( checker )
{
  ui.setupUi( this );
  mErrorCount = 0;
  mFixedCount = 0;
  mCloseable = true;

  const QStringList layers = mChecker->featurePools().keys();
  for ( const QString &layerId : layers )
  {
    QgsVectorLayer *layer = mChecker->featurePools()[layerId]->layer();
    QTreeWidgetItem *item = new QTreeWidgetItem( ui.treeWidgetMergeAttribute, QStringList() << layer->name() << QString() );
    QComboBox *attribCombo = new QComboBox();
    const QgsFields fields = layer->fields();
    for ( const QgsField &field : fields )
    {
      attribCombo->addItem( field.name() );
    }
    attribCombo->setCurrentIndex( 0 );
    connect( attribCombo, SIGNAL( currentIndexChanged( int ) ), this, SLOT( updateMergeAttributeIndices() ) );
    ui.treeWidgetMergeAttribute->setItemWidget( item, 1, attribCombo );
  }
  updateMergeAttributeIndices();

  connect( checker, &QgsGeometryChecker::errorAdded, this, &QgsGeometryCheckerResultTab::addError );
  connect( checker, &QgsGeometryChecker::errorUpdated, this, &QgsGeometryCheckerResultTab::updateError );
  connect( ui.tableWidgetErrors->selectionModel(), &QItemSelectionModel::selectionChanged, this, &QgsGeometryCheckerResultTab::onSelectionChanged );
  connect( ui.buttonGroupSelectAction, static_cast<void ( QButtonGroup::* )( int )>( &QButtonGroup::buttonClicked ), this, [this]( int ) { QgsGeometryCheckerResultTab::highlightErrors(); } );
  connect( ui.pushButtonOpenAttributeTable, &QAbstractButton::clicked, this, &QgsGeometryCheckerResultTab::openAttributeTable );
  connect( ui.pushButtonFixWithDefault, &QAbstractButton::clicked, this, &QgsGeometryCheckerResultTab::fixErrorsWithDefault );
  connect( ui.pushButtonFixWithPrompt, &QAbstractButton::clicked, this, &QgsGeometryCheckerResultTab::fixErrorsWithPrompt );
  connect( ui.pushButtonErrorResolutionSettings, &QAbstractButton::clicked, this, &QgsGeometryCheckerResultTab::setDefaultResolutionMethods );
  connect( ui.checkBoxHighlight, &QAbstractButton::clicked, this, &QgsGeometryCheckerResultTab::highlightErrors );
  connect( QgsProject::instance(), static_cast<void ( QgsProject::* )( const QStringList & )>( &QgsProject::layersWillBeRemoved ), this, &QgsGeometryCheckerResultTab::checkRemovedLayer );
  connect( ui.pushButtonExport, &QAbstractButton::clicked, this, &QgsGeometryCheckerResultTab::exportErrors );

  bool allLayersEditable = true;
  for ( const QgsFeaturePool *featurePool : mChecker->featurePools().values() )
  {
    if ( ( featurePool->layer()->dataProvider()->capabilities() & QgsVectorDataProvider::ChangeGeometries ) == 0 )
    {
      allLayersEditable = false;
      break;
    }
  }
  if ( !allLayersEditable )
  {
    ui.pushButtonFixWithDefault->setEnabled( false );
    ui.pushButtonFixWithPrompt->setEnabled( false );
  }

  ui.progressBarFixErrors->setVisible( false );
  ui.tableWidgetErrors->horizontalHeader()->setSortIndicator( 0, Qt::AscendingOrder );
  ui.tableWidgetErrors->resizeColumnToContents( 0 );
  ui.tableWidgetErrors->resizeColumnToContents( 1 );
  ui.tableWidgetErrors->horizontalHeader()->setStretchLastSection( true );
  // Not sure why, but this is needed...
  ui.tableWidgetErrors->setSortingEnabled( true );
  ui.tableWidgetErrors->setSortingEnabled( false );
}

QgsGeometryCheckerResultTab::~QgsGeometryCheckerResultTab()
{

  delete mChecker;
  qDeleteAll( mCurrentRubberBands );
}

void QgsGeometryCheckerResultTab::finalize()
{
  ui.tableWidgetErrors->setSortingEnabled( true );
  if ( !mChecker->getMessages().isEmpty() )
  {
    QDialog dialog;
    dialog.setLayout( new QVBoxLayout() );
    dialog.layout()->addWidget( new QLabel( tr( "The following checks reported errors:" ) ) );
    dialog.layout()->addWidget( new QPlainTextEdit( mChecker->getMessages().join( QLatin1Char( '\n' ) ) ) );
    QDialogButtonBox *bbox = new QDialogButtonBox( QDialogButtonBox::Close, Qt::Horizontal );
    dialog.layout()->addWidget( bbox );
    connect( bbox, &QDialogButtonBox::accepted, &dialog, &QDialog::accept );
    connect( bbox, &QDialogButtonBox::rejected, &dialog, &QDialog::reject );
    dialog.setWindowTitle( tr( "Check Errors Occurred" ) );
    dialog.exec();
  }
}

void QgsGeometryCheckerResultTab::addError( QgsGeometryCheckError *error )
{
  bool sortingWasEnabled = ui.tableWidgetErrors->isSortingEnabled();
  if ( sortingWasEnabled )
    ui.tableWidgetErrors->setSortingEnabled( false );

  int row = ui.tableWidgetErrors->rowCount();
  int prec = 7 - std::floor( std::max( 0., std::log10( std::max( error->location().x(), error->location().y() ) ) ) );
  QString posStr = QStringLiteral( "%1, %2" ).arg( error->location().x(), 0, 'f', prec ).arg( error->location().y(), 0, 'f', prec );

  ui.tableWidgetErrors->insertRow( row );
  QTableWidgetItem *idItem = new QTableWidgetItem();
  idItem->setData( Qt::EditRole, error->featureId() != FID_NULL ? QVariant( error->featureId() ) : QVariant() );
  ui.tableWidgetErrors->setItem( row, 0, new QTableWidgetItem( !error->layerId().isEmpty() ? mChecker->featurePools()[error->layerId()]->layer()->name() : "" ) );
  ui.tableWidgetErrors->setItem( row, 1, idItem );
  ui.tableWidgetErrors->setItem( row, 2, new QTableWidgetItem( error->description() ) );
  ui.tableWidgetErrors->setItem( row, 3, new QTableWidgetItem( posStr ) );
  QTableWidgetItem *valueItem = new QTableWidgetItem();
  valueItem->setData( Qt::EditRole, error->value() );
  ui.tableWidgetErrors->setItem( row, 4, valueItem );
  ui.tableWidgetErrors->setItem( row, 5, new QTableWidgetItem( QString() ) );
  ui.tableWidgetErrors->item( row, 0 )->setData( Qt::UserRole, QVariant::fromValue( error ) );
  ++mErrorCount;
  ui.labelErrorCount->setText( tr( "Total errors: %1, fixed errors: %2" ).arg( mErrorCount ).arg( mFixedCount ) );
  mStatistics.newErrors.insert( error );
  mErrorMap.insert( error, QPersistentModelIndex( ui.tableWidgetErrors->model()->index( row, 0 ) ) );

  if ( sortingWasEnabled )
    ui.tableWidgetErrors->setSortingEnabled( true );
}

void QgsGeometryCheckerResultTab::updateError( QgsGeometryCheckError *error, bool statusChanged )
{
  if ( !mErrorMap.contains( error ) )
  {
    return;
  }
  // Disable sorting to prevent crashes: if i.e. sorting by col 0, as soon as the item(row, 0) is set,
  // the row is potentially moved due to sorting, and subsequent item(row, col) reference wrong item
  bool sortingWasEnabled = ui.tableWidgetErrors->isSortingEnabled();
  if ( sortingWasEnabled )
    ui.tableWidgetErrors->setSortingEnabled( false );

  int row = mErrorMap.value( error ).row();
  int prec = 7 - std::floor( std::max( 0., std::log10( std::max( error->location().x(), error->location().y() ) ) ) );
  QString posStr = QStringLiteral( "%1, %2" ).arg( error->location().x(), 0, 'f', prec ).arg( error->location().y(), 0, 'f', prec );

  ui.tableWidgetErrors->item( row, 3 )->setText( posStr );
  ui.tableWidgetErrors->item( row, 4 )->setData( Qt::EditRole, error->value() );
  if ( error->status() == QgsGeometryCheckError::StatusFixed )
  {
    setRowStatus( row, Qt::green, tr( "Fixed: %1" ).arg( error->resolutionMessage() ), true );
    ++mFixedCount;
    if ( statusChanged )
    {
      mStatistics.fixedErrors.insert( error );
    }
  }
  else if ( error->status() == QgsGeometryCheckError::StatusFixFailed )
  {
    setRowStatus( row, Qt::red, tr( "Fix failed: %1" ).arg( error->resolutionMessage() ), true );
    if ( statusChanged )
    {
      mStatistics.failedErrors.insert( error );
    }
  }
  else if ( error->status() == QgsGeometryCheckError::StatusObsolete )
  {
    ui.tableWidgetErrors->setRowHidden( row, true );
//    setRowStatus( row, Qt::gray, tr( "Obsolete" ), false );
    --mErrorCount;
    // If error was new, don't report it as obsolete since the user never got to see the new error anyways
    if ( statusChanged && !mStatistics.newErrors.remove( error ) )
    {
      mStatistics.obsoleteErrors.insert( error );
    }
  }
  ui.labelErrorCount->setText( tr( "Total errors: %1, fixed errors: %2" ).arg( mErrorCount ).arg( mFixedCount ) );

  if ( sortingWasEnabled )
    ui.tableWidgetErrors->setSortingEnabled( true );
}

void QgsGeometryCheckerResultTab::exportErrors()
{
  QString initialdir;
  QDir dir = QFileInfo( mChecker->featurePools().first()->layer()->dataProvider()->dataSourceUri() ).dir();
  if ( dir.exists() )
  {
    initialdir = dir.absolutePath();
  }

  QString selectedFilter;
  QString file = QFileDialog::getSaveFileName( this, tr( "Select Output File" ), initialdir, QgsVectorFileWriter::fileFilterString(), &selectedFilter );
  if ( file.isEmpty() )
  {
    return;
  }

  file = QgsFileUtils::addExtensionFromFilter( file, selectedFilter );
  if ( !exportErrorsDo( file ) )
  {
    QMessageBox::critical( this, tr( "Export Errors" ), tr( "Failed to export errors to %1." ).arg( QDir::toNativeSeparators( file ) ) );
  }
}

bool QgsGeometryCheckerResultTab::exportErrorsDo( const QString &file )
{
  QList< QPair<QString, QString> > attributes;
  attributes.append( qMakePair( QStringLiteral( "Layer" ), QStringLiteral( "String;30;" ) ) );
  attributes.append( qMakePair( QStringLiteral( "FeatureID" ), QStringLiteral( "String;10;" ) ) );
  attributes.append( qMakePair( QStringLiteral( "ErrorDesc" ), QStringLiteral( "String;80;" ) ) );

  QFileInfo fi( file );
  QString ext = fi.suffix();
  QString driver = QgsVectorFileWriter::driverForExtension( ext );

  QString createError;
  bool success = QgsOgrProviderUtils::createEmptyDataSource( file, driver, "UTF-8", QgsWkbTypes::Point, attributes, QgsProject::instance()->crs(), createError );
  if ( !success )
  {
    return false;
  }

  const QgsVectorLayer::LayerOptions options { QgsProject::instance()->transformContext() };
  QgsVectorLayer *layer = new QgsVectorLayer( file, QFileInfo( file ).baseName(), QStringLiteral( "ogr" ), options );
  if ( !layer->isValid() )
  {
    delete layer;
    return false;
  }

  int fieldLayer = layer->fields().lookupField( QStringLiteral( "Layer" ) );
  int fieldFeatureId = layer->fields().lookupField( QStringLiteral( "FeatureID" ) );
  int fieldErrDesc = layer->fields().lookupField( QStringLiteral( "ErrorDesc" ) );
  for ( int row = 0, nRows = ui.tableWidgetErrors->rowCount(); row < nRows; ++row )
  {
    QgsGeometryCheckError *error = ui.tableWidgetErrors->item( row, 0 )->data( Qt::UserRole ).value<QgsGeometryCheckError *>();
    QString layerName = QString();
    const QString layerId = error->layerId();
    if ( mChecker->featurePools().contains( layerId ) )
    {
      QgsVectorLayer *srcLayer = mChecker->featurePools()[layerId]->layer();
      layerName = srcLayer->name();
    }

    QgsFeature f( layer->fields() );
    f.setAttribute( fieldLayer, layerName );
    f.setAttribute( fieldFeatureId, error->featureId() );
    f.setAttribute( fieldErrDesc, error->description() );
    QgsGeometry geom( new QgsPoint( error->location() ) );
    f.setGeometry( geom );
    layer->dataProvider()->addFeatures( QgsFeatureList() << f );
  }

  // Remove existing layer with same uri
  QStringList toRemove;
  for ( QgsMapLayer *maplayer : QgsProject::instance()->mapLayers() )
  {
    if ( qobject_cast<QgsVectorLayer *>( maplayer ) &&
         static_cast<QgsVectorLayer *>( maplayer )->dataProvider()->dataSourceUri() == layer->dataProvider()->dataSourceUri() )
    {
      toRemove.append( maplayer->id() );
    }
  }
  if ( !toRemove.isEmpty() )
  {
    QgsProject::instance()->removeMapLayers( toRemove );
  }

  QgsProject::instance()->addMapLayers( QList<QgsMapLayer *>() << layer );
  return true;
}

void QgsGeometryCheckerResultTab::highlightError( QgsGeometryCheckError *error )
{
  if ( !mErrorMap.contains( error ) )
  {
    return;
  }
  int row = mErrorMap.value( error ).row();
  ui.tableWidgetErrors->setCurrentIndex( ui.tableWidgetErrors->model()->index( row, 0 ) );
  highlightErrors( true );
}

void QgsGeometryCheckerResultTab::highlightErrors( bool current )
{
  qDeleteAll( mCurrentRubberBands );
  mCurrentRubberBands.clear();

  QList<QTableWidgetItem *> items;
  QVector<QgsPointXY> errorPositions;
  QgsRectangle totextent;

  if ( current )
  {
    items.append( ui.tableWidgetErrors->currentItem() );
  }
  else
  {
    items.append( ui.tableWidgetErrors->selectedItems() );
  }
  for ( QTableWidgetItem *item : std::as_const( items ) )
  {
    QgsGeometryCheckError *error = ui.tableWidgetErrors->item( item->row(), 0 )->data( Qt::UserRole ).value<QgsGeometryCheckError *>();

    const QgsGeometry geom = error->geometry();
    if ( ui.checkBoxHighlight->isChecked() && !geom.isNull() )
    {
      QgsRubberBand *featureRubberBand = new QgsRubberBand( mIface->mapCanvas() );
      featureRubberBand->addGeometry( geom, nullptr );
      featureRubberBand->setWidth( 5 );
      featureRubberBand->setColor( Qt::yellow );
      mCurrentRubberBands.append( featureRubberBand );
    }

    if ( ui.radioButtonError->isChecked() || current || error->status() == QgsGeometryCheckError::StatusFixed )
    {
      QgsRubberBand *pointRubberBand = new QgsRubberBand( mIface->mapCanvas(), QgsWkbTypes::PointGeometry );
      pointRubberBand->addPoint( error->location() );
      pointRubberBand->setWidth( 20 );
      pointRubberBand->setColor( Qt::red );
      mCurrentRubberBands.append( pointRubberBand );
      errorPositions.append( error->location() );
    }
    else if ( ui.radioButtonFeature->isChecked() )
    {
      QgsRectangle geomextent = error->affectedAreaBBox();
      if ( totextent.isEmpty() )
      {
        totextent = geomextent;
      }
      else
      {
        totextent.combineExtentWith( geomextent );
      }
    }
  }

  // If error positions positions are marked, pan to the center of all positions,
  // and zoom out if necessary to make all points fit.
  if ( !errorPositions.isEmpty() )
  {
    double cx = 0., cy = 0.;
    QgsRectangle pointExtent( errorPositions.first(), errorPositions.first() );
    for ( const QgsPointXY &p : std::as_const( errorPositions ) )
    {
      cx += p.x();
      cy += p.y();
      pointExtent.include( p );
    }
    QgsPointXY center = QgsPointXY( cx / errorPositions.size(), cy / errorPositions.size() );
    if ( totextent.isEmpty() )
    {
      QgsRectangle extent = mIface->mapCanvas()->extent();
      QgsVector diff = center - extent.center();
      extent.setXMinimum( extent.xMinimum() + diff.x() );
      extent.setXMaximum( extent.xMaximum() + diff.x() );
      extent.setYMinimum( extent.yMinimum() + diff.y() );
      extent.setYMaximum( extent.yMaximum() + diff.y() );
      extent.combineExtentWith( pointExtent );
      totextent = extent;
    }
    else
    {
      totextent.combineExtentWith( pointExtent );
    }
  }

  if ( !totextent.isEmpty() )
  {
    mIface->mapCanvas()->setExtent( totextent, true );
  }
  mIface->mapCanvas()->refresh();
}

void QgsGeometryCheckerResultTab::onSelectionChanged( const QItemSelection &newSel, const QItemSelection &/*oldSel*/ )
{
  QModelIndex idx = ui.tableWidgetErrors->currentIndex();
  if ( idx.isValid() && !ui.tableWidgetErrors->isRowHidden( idx.row() ) && newSel.contains( idx ) )
  {
    highlightErrors();
  }
  else
  {
    qDeleteAll( mCurrentRubberBands );
    mCurrentRubberBands.clear();
  }
  ui.pushButtonOpenAttributeTable->setEnabled( !newSel.isEmpty() );
}

void QgsGeometryCheckerResultTab::openAttributeTable()
{
  QMap<QString, QSet<QgsFeatureId>> ids;
  for ( QModelIndex idx : ui.tableWidgetErrors->selectionModel()->selectedRows() )
  {
    QgsGeometryCheckError *error = ui.tableWidgetErrors->item( idx.row(), 0 )->data( Qt::UserRole ).value<QgsGeometryCheckError *>();
    QgsFeatureId id = error->featureId();
    if ( id >= 0 )
    {
      ids[error->layerId()].insert( id );
    }
  }
  if ( ids.isEmpty() )
  {
    return;
  }
  for ( const QString &layerId : ids.keys() )
  {
    QStringList expr;
    for ( QgsFeatureId id : ids[layerId] )
    {
      expr.append( QStringLiteral( "$id = %1 " ).arg( id ) );
    }
    if ( mAttribTableDialogs[layerId] )
    {
      mAttribTableDialogs[layerId]->close();
    }
    mAttribTableDialogs[layerId] = mIface->showAttributeTable( mChecker->featurePools()[layerId]->layer(), expr.join( QLatin1String( " or " ) ) );
  }
}

void QgsGeometryCheckerResultTab::fixErrors( bool prompt )
{

  //! Collect errors to fix
  QModelIndexList rows = ui.tableWidgetErrors->selectionModel()->selectedRows();
  if ( rows.isEmpty() )
  {
    ui.tableWidgetErrors->selectAll();
    rows = ui.tableWidgetErrors->selectionModel()->selectedRows();
  }
  QList<QgsGeometryCheckError *> errors;
  for ( const QModelIndex &index : std::as_const( rows ) )
  {
    QgsGeometryCheckError *error = ui.tableWidgetErrors->item( index.row(), 0 )->data( Qt::UserRole ).value<QgsGeometryCheckError *>();
    if ( error->status() < QgsGeometryCheckError::StatusFixed )
    {
      errors.append( error );
    }
  }
  if ( errors.isEmpty() )
  {
    return;
  }
  if ( QMessageBox::Yes != QMessageBox::question( this, tr( "Fix Errors" ), tr( "Do you want to fix %1 errors?" ).arg( errors.size() ), QMessageBox::Yes, QMessageBox::No ) )
  {
    return;
  }

  // Disable sorting while fixing errors
  ui.tableWidgetErrors->setSortingEnabled( false );

  //! Reset statistics, clear rubberbands
  mStatistics = QgsGeometryCheckerFixSummaryDialog::Statistics();
  qDeleteAll( mCurrentRubberBands );
  mCurrentRubberBands.clear();


  //! Fix errors
  mCloseable = false;
  if ( prompt )
  {
    QgsGeometryCheckerFixDialog fixdialog( mChecker, errors, mIface->mainWindow() );
    QEventLoop loop;
    connect( &fixdialog, &QgsGeometryCheckerFixDialog::currentErrorChanged, this, &QgsGeometryCheckerResultTab::highlightError );
    connect( &fixdialog, &QDialog::finished, &loop, &QEventLoop::quit );
    fixdialog.show();
    fixdialog.move( window()->frameGeometry().topLeft() + window()->rect().center() - fixdialog.rect().center() );
    parentWidget()->parentWidget()->parentWidget()->setEnabled( false );
    loop.exec();
    parentWidget()->parentWidget()->parentWidget()->setEnabled( true );
  }
  else
  {
    setCursor( Qt::WaitCursor );
    ui.progressBarFixErrors->setVisible( true );
    ui.progressBarFixErrors->setRange( 0, errors.size() );

    for ( QgsGeometryCheckError *error : std::as_const( errors ) )
    {
      int fixMethod = QgsSettings().value( sSettingsGroup + error->check()->id(), QVariant::fromValue<int>( 0 ) ).toInt();
      mChecker->fixError( error, fixMethod );
      ui.progressBarFixErrors->setValue( ui.progressBarFixErrors->value() + 1 );
      QApplication::processEvents( QEventLoop::ExcludeUserInputEvents );
    }

    ui.progressBarFixErrors->setVisible( false );
    unsetCursor();
  }
  for ( const QString &layerId : mChecker->featurePools().keys() )
  {
    mChecker->featurePools()[layerId]->layer()->triggerRepaint();
  }

  if ( mStatistics.itemCount() > 0 )
  {
    parentWidget()->parentWidget()->parentWidget()->setEnabled( false );
    QgsGeometryCheckerFixSummaryDialog summarydialog( mStatistics, mChecker, mIface->mainWindow() );
    connect( &summarydialog, &QgsGeometryCheckerFixSummaryDialog::errorSelected, this, &QgsGeometryCheckerResultTab::highlightError );
    summarydialog.exec();
    parentWidget()->parentWidget()->parentWidget()->setEnabled( true );
  }
  mCloseable = true;
  ui.tableWidgetErrors->setSortingEnabled( true );
}

void QgsGeometryCheckerResultTab::setRowStatus( int row, const QColor &color, const QString &message, bool selectable )
{
  for ( int col = 0, nCols = ui.tableWidgetErrors->columnCount(); col < nCols; ++col )
  {
    QTableWidgetItem *item = ui.tableWidgetErrors->item( row, col );
    item->setBackground( color );
    if ( !selectable )
    {
      item->setFlags( item->flags() & ~Qt::ItemIsSelectable );
      item->setForeground( Qt::lightGray );
    }
  }
  ui.tableWidgetErrors->item( row, 5 )->setText( message );
}

void QgsGeometryCheckerResultTab::setDefaultResolutionMethods()
{
  QDialog dialog( this );
  dialog.setWindowTitle( tr( "Set Error Resolutions" ) );

  QVBoxLayout *layout = new QVBoxLayout( &dialog );

  QgsVScrollArea *scrollArea = new QgsVScrollArea( &dialog );
  layout->setContentsMargins( 6, 6, 6, 6 );
  layout->addWidget( new QLabel( tr( "Select default error resolutions:" ) ) );
  layout->addWidget( scrollArea );

  QWidget *scrollAreaContents = new QWidget( scrollArea );
  QVBoxLayout *scrollAreaLayout = new QVBoxLayout( scrollAreaContents );

  for ( const QgsGeometryCheck *check : mChecker->getChecks() )
  {
    QGroupBox *groupBox = new QGroupBox( scrollAreaContents );
    groupBox->setTitle( check->description() );
    groupBox->setFlat( true );

    QVBoxLayout *groupBoxLayout = new QVBoxLayout( groupBox );
    groupBoxLayout->setContentsMargins( 2, 0, 2, 2 );
    QButtonGroup *radioGroup = new QButtonGroup( groupBox );
    radioGroup->setProperty( "errorType", check->id() );
    int checkedId = QgsSettings().value( sSettingsGroup + check->id(), QVariant::fromValue<int>( 0 ) ).toInt();
    const QList<QgsGeometryCheckResolutionMethod> resolutionMethods = check->availableResolutionMethods();
    for ( const QgsGeometryCheckResolutionMethod &method : resolutionMethods )
    {
      QRadioButton *radio = new QRadioButton( method.name(), groupBox );
      radio->setChecked( method.id() == checkedId );
      groupBoxLayout->addWidget( radio );
      radioGroup->addButton( radio, method.id() );
    }
    connect( radioGroup, static_cast<void ( QButtonGroup::* )( int )>( &QButtonGroup::buttonClicked ), this, &QgsGeometryCheckerResultTab::storeDefaultResolutionMethod );

    scrollAreaLayout->addWidget( groupBox );
  }
  scrollAreaLayout->addItem( new QSpacerItem( 1, 1, QSizePolicy::Preferred, QSizePolicy::Expanding ) );
  scrollArea->setWidget( scrollAreaContents );

  QDialogButtonBox *buttonBox = new QDialogButtonBox( QDialogButtonBox::Ok, Qt::Horizontal, &dialog );
  connect( buttonBox, &QDialogButtonBox::accepted, &dialog, &QDialog::accept );
  layout->addWidget( buttonBox );
  dialog.exec();
}

void QgsGeometryCheckerResultTab::storeDefaultResolutionMethod( int id ) const
{
  QString errorType = qobject_cast<QButtonGroup *>( QObject::sender() )->property( "errorType" ).toString();
  QgsSettings().setValue( sSettingsGroup + errorType, id );
}

void QgsGeometryCheckerResultTab::checkRemovedLayer( const QStringList &ids )
{
  bool requiredLayersRemoved = false;
  for ( const QString &layerId : mChecker->featurePools().keys() )
  {
    if ( ids.contains( layerId ) )
    {
      if ( isEnabled() )
        requiredLayersRemoved = true;
    }
  }
  if ( requiredLayersRemoved )
  {
    if ( mTabWidget->currentWidget() == this )
    {
      QMessageBox::critical( this, tr( "Remove Layer" ), tr( "One or more layers have been removed." ) );
    }
    setEnabled( false );
    qDeleteAll( mCurrentRubberBands );
    mCurrentRubberBands.clear();
  }
}

void QgsGeometryCheckerResultTab::updateMergeAttributeIndices()
{
  QMap<QString, int> mergeAttribIndices;
  QTreeWidgetItemIterator it( ui.treeWidgetMergeAttribute );
  while ( *it )
  {
    QTreeWidgetItem *item = *it;
    QComboBox *combo = qobject_cast<QComboBox *>( ui.treeWidgetMergeAttribute->itemWidget( item, 1 ) );
    mergeAttribIndices.insert( item->text( 0 ), combo->currentIndex() );
    ++it;
  }
  mChecker->setMergeAttributeIndices( mergeAttribIndices );
}