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qgsgeometryvalidationmodel.cpp
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qgsgeometryvalidationmodel.cpp
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#include "qgsgeometryvalidationmodel.h"
#include "qgsvectorlayer.h"
#include "qgssinglegeometrycheck.h"
#include <QIcon>
QgsGeometryValidationModel::QgsGeometryValidationModel( QgsGeometryValidationService *geometryValidationService, QObject *parent )
: QAbstractItemModel( parent )
, mGeometryValidationService( geometryValidationService )
{
connect( mGeometryValidationService, &QgsGeometryValidationService::geometryCheckCompleted, this, &QgsGeometryValidationModel::onGeometryCheckCompleted );
connect( mGeometryValidationService, &QgsGeometryValidationService::geometryCheckStarted, this, &QgsGeometryValidationModel::onGeometryCheckStarted );
connect( mGeometryValidationService, &QgsGeometryValidationService::topologyChecksUpdated, this, &QgsGeometryValidationModel::onTopologyChecksUpdated );
connect( mGeometryValidationService, &QgsGeometryValidationService::topologyChecksCleared, this, &QgsGeometryValidationModel::onTopologyChecksCleared );
}
QModelIndex QgsGeometryValidationModel::index( int row, int column, const QModelIndex &parent ) const
{
Q_UNUSED( parent )
return createIndex( row, column );
}
QModelIndex QgsGeometryValidationModel::parent( const QModelIndex &child ) const
{
Q_UNUSED( child )
return QModelIndex();
}
int QgsGeometryValidationModel::rowCount( const QModelIndex &parent ) const
{
Q_UNUSED( parent )
return mErrorStorage.value( mCurrentLayer ).size() + mTopologyErrorStorage.value( mCurrentLayer ).size();
}
int QgsGeometryValidationModel::columnCount( const QModelIndex &parent ) const
{
Q_UNUSED( parent )
return 1;
}
QVariant QgsGeometryValidationModel::data( const QModelIndex &index, int role ) const
{
const auto &layerErrors = mErrorStorage.value( mCurrentLayer );
if ( index.row() >= layerErrors.size() )
{
// Topology error
const auto &topologyErrors = mTopologyErrorStorage.value( mCurrentLayer );
auto topologyError = topologyErrors.at( index.row() - layerErrors.size() );
switch ( role )
{
case Qt::DisplayRole:
{
const QgsFeatureId fid = topologyError->featureId();
const QgsFeature feature = mCurrentLayer->getFeature( fid ); // TODO: this should be cached!
mExpressionContext.setFeature( feature );
QString featureTitle = mDisplayExpression.evaluate( &mExpressionContext ).toString();
if ( featureTitle.isEmpty() )
featureTitle = fid;
return tr( "%1: %2" ).arg( featureTitle, topologyError->description() );
}
case FeatureExtentRole:
{
const QgsFeatureId fid = topologyError->featureId();
const QgsFeature feature = mCurrentLayer->getFeature( fid ); // TODO: this should be cached!
return feature.geometry().boundingBox();
}
case ProblemExtentRole:
{
return topologyError->affectedAreaBBox();
}
case ErrorGeometryRole:
{
return topologyError->geometry();
}
case FeatureGeometryRole:
{
const QgsFeatureId fid = topologyError->featureId();
const QgsFeature feature = mCurrentLayer->getFeature( fid ); // TODO: this should be cached!
return feature.geometry();
}
case ErrorLocationGeometryRole:
{
return topologyError->location();
}
case GeometryCheckErrorRole:
{
return QVariant::fromValue<QgsGeometryCheckError *>( topologyError.get() );
}
}
}
else
{
// Geometry error
const auto &featureItem = layerErrors.at( index.row() );
switch ( role )
{
case Qt::DisplayRole:
{
QgsFeature feature = mCurrentLayer->getFeature( featureItem.fid ); // TODO: this should be cached!
mExpressionContext.setFeature( feature );
QString featureTitle = mDisplayExpression.evaluate( &mExpressionContext ).toString();
if ( featureTitle.isEmpty() )
featureTitle = featureItem.fid;
if ( featureItem.errors.count() > 1 )
return tr( "%1: %n Errors", "", featureItem.errors.count() ).arg( featureTitle );
else if ( featureItem.errors.count() == 1 )
return tr( "%1: %2" ).arg( featureTitle, featureItem.errors.at( 0 )->description() );
else
return QVariant();
}
case Qt::DecorationRole:
{
if ( mGeometryValidationService->validationActive( mCurrentLayer, featureItem.fid ) )
return QgsApplication::getThemeIcon( "/mActionTracing.svg" );
else
return QVariant();
}
default:
return QVariant();
}
}
return QVariant();
}
QgsVectorLayer *QgsGeometryValidationModel::currentLayer() const
{
return mCurrentLayer;
}
void QgsGeometryValidationModel::setCurrentLayer( QgsVectorLayer *currentLayer )
{
if ( mCurrentLayer == currentLayer )
return;
beginResetModel();
mCurrentLayer = currentLayer;
if ( mCurrentLayer )
{
mDisplayExpression = mCurrentLayer ? mCurrentLayer->displayExpression() : QString();
mExpressionContext = QgsExpressionContext( QgsExpressionContextUtils::globalProjectLayerScopes( mCurrentLayer ) );
mDisplayExpression.prepare( &mExpressionContext );
}
else
{
mDisplayExpression = QString();
mExpressionContext = QgsExpressionContext();
}
endResetModel();
}
void QgsGeometryValidationModel::onGeometryCheckCompleted( QgsVectorLayer *layer, QgsFeatureId fid, const QList<std::shared_ptr<QgsSingleGeometryCheckError>> &errors )
{
auto &layerErrors = mErrorStorage[layer];
int featureIdx = errorsForFeature( layer, fid );
// The last check for this feature finished: remove
if ( featureIdx > -1 && errors.empty() && !mGeometryValidationService->validationActive( layer, fid ) )
{
if ( mCurrentLayer == layer )
beginRemoveRows( QModelIndex(), featureIdx, featureIdx );
layerErrors.removeAt( featureIdx );
if ( mCurrentLayer == layer )
endRemoveRows();
}
else if ( !errors.empty() )
{
// a new or updated feature
if ( featureIdx == -1 )
{
featureIdx = layerErrors.count();
if ( mCurrentLayer == layer )
beginInsertRows( QModelIndex(), featureIdx, featureIdx );
layerErrors << FeatureErrors( fid );
if ( mCurrentLayer == layer )
endInsertRows();
}
auto &featureItem = layerErrors[featureIdx];
featureItem.errors.append( errors );
if ( mCurrentLayer == layer )
{
QModelIndex modelIndex = index( featureIdx, 0, QModelIndex() );
emit dataChanged( modelIndex, modelIndex );
}
}
}
void QgsGeometryValidationModel::onGeometryCheckStarted( QgsVectorLayer *layer, QgsFeatureId fid )
{
auto &layerErrors = mErrorStorage[layer];
int featureIdx = errorsForFeature( layer, fid );
if ( featureIdx != -1 )
{
auto &featureItem = layerErrors[featureIdx];
featureItem.errors.clear();
if ( mCurrentLayer == layer )
{
QModelIndex modelIndex = index( featureIdx, 0, QModelIndex() );
emit dataChanged( modelIndex, modelIndex );
}
}
}
void QgsGeometryValidationModel::onTopologyChecksUpdated( QgsVectorLayer *layer, const QList<std::shared_ptr<QgsGeometryCheckError> > &errors )
{
auto &topologyLayerErrors = mTopologyErrorStorage[layer];
if ( layer == currentLayer() )
{
const int oldRowCount = rowCount();
beginInsertRows( QModelIndex(), oldRowCount, oldRowCount + errors.size() );
}
topologyLayerErrors.append( errors );
if ( layer == currentLayer() )
{
endInsertRows();
}
}
void QgsGeometryValidationModel::onTopologyChecksCleared( QgsVectorLayer *layer )
{
auto &topologyLayerErrors = mTopologyErrorStorage[layer];
if ( topologyLayerErrors.empty() )
return;
if ( layer == currentLayer() )
{
beginRemoveRows( QModelIndex(), mErrorStorage.size(), rowCount() - 1 );
}
topologyLayerErrors.clear();
if ( layer == currentLayer() )
{
endRemoveRows();
}
}
int QgsGeometryValidationModel::errorsForFeature( QgsVectorLayer *layer, QgsFeatureId fid )
{
const auto &layerErrors = mErrorStorage[layer];
int idx = 0;
for ( const auto &feature : layerErrors )
{
if ( feature.fid == fid )
return idx;
idx++;
}
return -1;
}