qgsprocessingmeshdatasetwidget.cpp

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/***************************************************************************
  qgsprocessingmeshdatasetgroupswidget.h
  ---------------------
  Date                 : October 2020
  Copyright            : (C) 2020 by Vincent Cloarec
  Email                : vcloarec at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   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 "qgsprocessingmeshdatasetwidget.h"
 
#include "qgsdatetimeedit.h"
#include "qgsmapcanvas.h"
#include "qgsmeshlayer.h"
#include "qgsmeshlayertemporalproperties.h"
#include "qgsmeshlayerutils.h"
#include "qgspanelwidget.h"
#include "qgsprocessingmodelalgorithm.h"
#include "qgsprocessingmodelparameter.h"
#include "qgsprocessingmultipleselectiondialog.h"
#include "qgsprocessingoutputs.h"
 
#include <QLabel>
#include <QLineEdit>
#include <QMenu>
#include <QToolButton>
#include <QVBoxLayout>
 
#include "moc_qgsprocessingmeshdatasetwidget.cpp"

 
QgsProcessingMeshDatasetGroupsWidget::QgsProcessingMeshDatasetGroupsWidget( QWidget *parent, const QgsProcessingParameterMeshDatasetGroups *param )
  : QWidget( parent ), mParam( param )
{
  QHBoxLayout *hl = new QHBoxLayout();
  hl->setContentsMargins( 0, 0, 0, 0 );
 
  mLineEdit = new QLineEdit();
  mLineEdit->setEnabled( false );
  hl->addWidget( mLineEdit, 1 );
 
  mToolButton = new QToolButton();
  mToolButton->setText( QString( QChar( 0x2026 ) ) );
  hl->addWidget( mToolButton );
 
  setLayout( hl );
 
  mLineEdit->setText( tr( "%1 dataset groups selected" ).arg( 0 ) );
 
  mToolButton->setPopupMode( QToolButton::InstantPopup );
  QMenu *toolButtonMenu = new QMenu( this );
  mActionCurrentActiveDatasetGroups = toolButtonMenu->addAction( tr( "Current Active Dataset Group" ) );
  connect( mActionCurrentActiveDatasetGroups, &QAction::triggered, this, &QgsProcessingMeshDatasetGroupsWidget::selectCurrentActiveDatasetGroup );
 
  mActionAvailableDatasetGroups = toolButtonMenu->addAction( tr( "Select in Available Dataset Groups" ) );
  connect( mActionAvailableDatasetGroups, &QAction::triggered, this, &QgsProcessingMeshDatasetGroupsWidget::showDialog );
 
  mToolButton->setMenu( toolButtonMenu );
}
 
void QgsProcessingMeshDatasetGroupsWidget::setMeshLayer( QgsMeshLayer *layer, bool layerFromProject )
{
  mActionCurrentActiveDatasetGroups->setEnabled( layer && layerFromProject );
  mActionAvailableDatasetGroups->setEnabled( layer );
 
  if ( mMeshLayer == layer )
    return;
 
  mDatasetGroupsNames.clear();
 
  if ( layerFromProject )
    mMeshLayer = layer;
  else
  {
    mMeshLayer = nullptr;
    if ( layer )
    {
      QList<int> datasetGroupsIndexes = layer->datasetGroupsIndexes();
      for ( int i : datasetGroupsIndexes )
      {
        QgsMeshDatasetGroupMetadata meta = layer->datasetGroupMetadata( i );
        if ( mParam->isDataTypeSupported( meta.dataType() ) )
        {
          mDatasetGroupsNames[i] = meta.name();
        }
      }
    }
  }
  mValue.clear();
  updateSummaryText();
  emit changed();
}
 
void QgsProcessingMeshDatasetGroupsWidget::setValue( const QVariant &value )
{
  if ( value.isValid() )
    mValue = value.userType() == QMetaType::Type::QVariantList ? value.toList() : QVariantList() << value;
  else
    mValue.clear();
 
  updateSummaryText();
  emit changed();
}
 
QVariant QgsProcessingMeshDatasetGroupsWidget::value() const
{
  return mValue;
}
 
void QgsProcessingMeshDatasetGroupsWidget::showDialog()
{
  QList<int> datasetGroupsIndexes;
  QStringList options;
  QVariantList availableOptions;
  if ( mMeshLayer )
  {
    datasetGroupsIndexes = mMeshLayer->datasetGroupsIndexes();
    for ( int i : std::as_const( datasetGroupsIndexes ) )
    {
      QgsMeshDatasetGroupMetadata meta = mMeshLayer->datasetGroupMetadata( i );
      if ( mParam->isDataTypeSupported( meta.dataType() ) )
      {
        availableOptions.append( i );
        options.append( meta.name() );
      }
    }
  }
  else
  {
    for ( auto it = mDatasetGroupsNames.constBegin(); it != mDatasetGroupsNames.constEnd(); it++ )
    {
      availableOptions.append( it.key() );
      options.append( it.value() );
    }
  }
 
  QgsPanelWidget *panel = QgsPanelWidget::findParentPanel( this );
  if ( panel && panel->dockMode() )
  {
    QgsProcessingMultipleSelectionPanelWidget *widget = new QgsProcessingMultipleSelectionPanelWidget( availableOptions, mValue );
    widget->setPanelTitle( tr( "Dataset Groups Available" ) );
 
    widget->setValueFormatter( [availableOptions, options]( const QVariant &v ) -> QString {
      const int index = v.toInt();
      const int pos = availableOptions.indexOf( index );
      return ( pos >= 0 && pos < options.size() ) ? options.at( pos ) : QString();
    } );
 
    connect( widget, &QgsProcessingMultipleSelectionPanelWidget::selectionChanged, this, [this, widget]() {
      setValue( widget->selectedOptions() );
    } );
    connect( widget, &QgsProcessingMultipleSelectionPanelWidget::acceptClicked, widget, &QgsPanelWidget::acceptPanel );
    panel->openPanel( widget );
  }
  else
  {
    QgsProcessingMultipleSelectionDialog dlg( availableOptions, mValue, this, Qt::WindowFlags() );
 
    dlg.setValueFormatter( [datasetGroupsIndexes, options]( const QVariant &v ) -> QString {
      const int index = v.toInt();
      const int pos = datasetGroupsIndexes.indexOf( index );
      return ( pos >= 0 && pos < options.size() ) ? options.at( pos ) : QString();
    } );
    if ( dlg.exec() )
    {
      setValue( dlg.selectedOptions() );
    }
  }
}
 
void QgsProcessingMeshDatasetGroupsWidget::selectCurrentActiveDatasetGroup()
{
  QVariantList options;
  if ( mMeshLayer && mParam )
  {
    int scalarDatasetGroup = mMeshLayer->rendererSettings().activeScalarDatasetGroup();
    int vectorDatasetGroup = mMeshLayer->rendererSettings().activeVectorDatasetGroup();
 
    if ( scalarDatasetGroup >= 0 && mParam->isDataTypeSupported( mMeshLayer->datasetGroupMetadata( scalarDatasetGroup ).dataType() ) )
      options.append( scalarDatasetGroup );
 
    if ( vectorDatasetGroup >= 0
         && mParam->isDataTypeSupported( mMeshLayer->datasetGroupMetadata( vectorDatasetGroup ).dataType() )
         && vectorDatasetGroup != scalarDatasetGroup )
      options.append( vectorDatasetGroup );
  }
 
  setValue( options );
}
 
QgsProcessingMeshDatasetGroupsWidgetWrapper::QgsProcessingMeshDatasetGroupsWidgetWrapper( const QgsProcessingParameterDefinition *parameter, Qgis::ProcessingMode type, QWidget *parent )
  : QgsAbstractProcessingParameterWidgetWrapper( parameter, type, parent )
{}
 
QString QgsProcessingMeshDatasetGroupsWidgetWrapper::parameterType() const
{
  return QgsProcessingParameterMeshDatasetGroups::typeName();
}
 
QgsAbstractProcessingParameterWidgetWrapper *QgsProcessingMeshDatasetGroupsWidgetWrapper::createWidgetWrapper( const QgsProcessingParameterDefinition *parameter, Qgis::ProcessingMode type )
{
  return new QgsProcessingMeshDatasetGroupsWidgetWrapper( parameter, type );
}
 
QgsProcessingAbstractParameterDefinitionWidget *QgsProcessingMeshDatasetGroupsWidgetWrapper::createParameterDefinitionWidget( QgsProcessingContext &context, const QgsProcessingParameterWidgetContext &widgetContext, const QgsProcessingParameterDefinition *definition, const QgsProcessingAlgorithm *algorithm )
{
  return new QgsProcessingMeshDatasetGroupsParameterDefinitionWidget( context, widgetContext, definition, algorithm );
}
 
void QgsProcessingMeshDatasetGroupsWidgetWrapper::postInitialize( const QList<QgsAbstractProcessingParameterWidgetWrapper *> &wrappers )
{
  QgsAbstractProcessingParameterWidgetWrapper::postInitialize( wrappers ); //necessary here?
  switch ( type() )
  {
    case Qgis::ProcessingMode::Standard:
    case Qgis::ProcessingMode::Batch:
    {
      for ( const QgsAbstractProcessingParameterWidgetWrapper *wrapper : wrappers )
      {
        if ( wrapper->parameterDefinition()->name() == static_cast<const QgsProcessingParameterMeshDatasetGroups *>( parameterDefinition() )->meshLayerParameterName() )
        {
          setMeshLayerWrapperValue( wrapper );
          connect( wrapper, &QgsAbstractProcessingParameterWidgetWrapper::widgetValueHasChanged, this, [this, wrapper] {
            setMeshLayerWrapperValue( wrapper );
          } );
          break;
        }
      }
    }
    break;
    case Qgis::ProcessingMode::Modeler:
      break;
  }
}
 
void QgsProcessingMeshDatasetGroupsWidgetWrapper::setMeshLayerWrapperValue( const QgsAbstractProcessingParameterWidgetWrapper *wrapper )
{
  if ( !mWidget )
    return;
 
  // evaluate value to layer
  QgsProcessingContext *context = nullptr;
  if ( mProcessingContextGenerator )
    context = mProcessingContextGenerator->processingContext();
 
  bool layerFromProject;
  QgsMeshLayer *meshLayer;
  if ( !context )
  {
    QgsProcessingContext dummyContext;
    meshLayer = QgsProcessingParameters::parameterAsMeshLayer( wrapper->parameterDefinition(), wrapper->parameterValue(), dummyContext );
    layerFromProject = false;
  }
  else
  {
    meshLayer = QgsProcessingParameters::parameterAsMeshLayer( wrapper->parameterDefinition(), wrapper->parameterValue(), *context );
    layerFromProject = context->project() && context->project()->layerStore()->layers<QgsMeshLayer *>().contains( meshLayer );
  }
 
  if ( mWidget )
    mWidget->setMeshLayer( meshLayer, layerFromProject );
}
 
QWidget *QgsProcessingMeshDatasetGroupsWidgetWrapper::createWidget() SIP_FACTORY
{
  mWidget = new QgsProcessingMeshDatasetGroupsWidget( nullptr, static_cast<const QgsProcessingParameterMeshDatasetGroups *>( parameterDefinition() ) );
  connect( mWidget, &QgsProcessingMeshDatasetGroupsWidget::changed, this, [this] {
    emit widgetValueHasChanged( this );
  } );
 
  return mWidget;
}
 
void QgsProcessingMeshDatasetGroupsWidgetWrapper::setWidgetValue( const QVariant &value, QgsProcessingContext &context )
{
  if ( !mWidget )
    return;
 
  QList<int> datasetGroupIndexes;
  if ( value.userType() == QMetaType::Type::QVariantList )
  {
    //here we can't use  QgsProcessingParameters::parameterAsInts() because this method return empry list when first value is 0...
    datasetGroupIndexes = QgsProcessingParameters::parameterAsInts( parameterDefinition(), value, context );
  }
  else
    datasetGroupIndexes.append( QgsProcessingParameters::parameterAsInt( parameterDefinition(), value, context ) );
 
  QVariantList varList;
  for ( const int index : std::as_const( datasetGroupIndexes ) )
    varList.append( index );
 
  mWidget->setValue( varList );
}
 
QVariant QgsProcessingMeshDatasetGroupsWidgetWrapper::widgetValue() const
{
  if ( mWidget )
    return mWidget->value();
  return QVariant();
}
 
 
void QgsProcessingMeshDatasetGroupsWidget::updateSummaryText()
{
  mLineEdit->setText( tr( "%n option(s) selected", nullptr, mValue.count() ) );
}
 
QgsProcessingMeshDatasetTimeWidgetWrapper::QgsProcessingMeshDatasetTimeWidgetWrapper( const QgsProcessingParameterDefinition *parameter, Qgis::ProcessingMode type, QWidget *parent )
  : QgsAbstractProcessingParameterWidgetWrapper( parameter, type, parent )
{
}
 
QString QgsProcessingMeshDatasetTimeWidgetWrapper::parameterType() const
{
  return QgsProcessingParameterMeshDatasetTime::typeName();
}
 
QgsAbstractProcessingParameterWidgetWrapper *QgsProcessingMeshDatasetTimeWidgetWrapper::createWidgetWrapper( const QgsProcessingParameterDefinition *parameter, Qgis::ProcessingMode type )
{
  return new QgsProcessingMeshDatasetTimeWidgetWrapper( parameter, type );
}
 
void QgsProcessingMeshDatasetTimeWidgetWrapper::postInitialize( const QList<QgsAbstractProcessingParameterWidgetWrapper *> &wrappers )
{
  QgsAbstractProcessingParameterWidgetWrapper::postInitialize( wrappers ); //necessary here?
  switch ( type() )
  {
    case Qgis::ProcessingMode::Standard:
    case Qgis::ProcessingMode::Batch:
    {
      const QgsAbstractProcessingParameterWidgetWrapper *layerParameterWrapper = nullptr;
      const QgsAbstractProcessingParameterWidgetWrapper *datasetGroupsParameterWrapper = nullptr;
      for ( const QgsAbstractProcessingParameterWidgetWrapper *wrapper : wrappers )
      {
        if ( wrapper->parameterDefinition()->name() == static_cast<const QgsProcessingParameterMeshDatasetTime *>( parameterDefinition() )->meshLayerParameterName() )
          layerParameterWrapper = wrapper;
 
        if ( wrapper->parameterDefinition()->name() == static_cast<const QgsProcessingParameterMeshDatasetTime *>( parameterDefinition() )->datasetGroupParameterName() )
          datasetGroupsParameterWrapper = wrapper;
      }
      setMeshLayerWrapperValue( layerParameterWrapper );
      setDatasetGroupIndexesWrapperValue( datasetGroupsParameterWrapper );
      connect( datasetGroupsParameterWrapper, &QgsAbstractProcessingParameterWidgetWrapper::widgetValueHasChanged, this, [this, layerParameterWrapper, datasetGroupsParameterWrapper] {
        setMeshLayerWrapperValue( layerParameterWrapper );
        setDatasetGroupIndexesWrapperValue( datasetGroupsParameterWrapper );
      } );
 
      break;
    }
 
    case Qgis::ProcessingMode::Modeler:
      break;
  }
}
 
QgsProcessingAbstractParameterDefinitionWidget *QgsProcessingMeshDatasetTimeWidgetWrapper::createParameterDefinitionWidget( QgsProcessingContext &context, const QgsProcessingParameterWidgetContext &widgetContext, const QgsProcessingParameterDefinition *definition, const QgsProcessingAlgorithm *algorithm )
{
  return new QgsProcessingMeshDatasetTimeParameterDefinitionWidget( context, widgetContext, definition, algorithm );
}
 
void QgsProcessingMeshDatasetTimeWidgetWrapper::setMeshLayerWrapperValue( const QgsAbstractProcessingParameterWidgetWrapper *wrapper )
{
  if ( !mWidget || !wrapper )
    return;
 
  // evaluate value to layer
  QgsProcessingContext *context = nullptr;
  if ( mProcessingContextGenerator )
    context = mProcessingContextGenerator->processingContext();
 
  bool layerFromProject;
  QgsMeshLayer *meshLayer;
  if ( !context )
  {
    QgsProcessingContext dummyContext;
    meshLayer = QgsProcessingParameters::parameterAsMeshLayer( wrapper->parameterDefinition(), wrapper->parameterValue(), dummyContext );
    layerFromProject = false;
  }
  else
  {
    meshLayer = QgsProcessingParameters::parameterAsMeshLayer( wrapper->parameterDefinition(), wrapper->parameterValue(), *context );
    layerFromProject = context->project() && context->project()->layerStore()->layers<QgsMeshLayer *>().contains( meshLayer );
  }
 
  mWidget->setMeshLayer( meshLayer, layerFromProject );
}
 
void QgsProcessingMeshDatasetTimeWidgetWrapper::setDatasetGroupIndexesWrapperValue( const QgsAbstractProcessingParameterWidgetWrapper *wrapper )
{
  if ( !mWidget || !wrapper )
    return;
 
  QVariant datasetGroupsVariant = wrapper->parameterValue();
 
  if ( !datasetGroupsVariant.isValid() || datasetGroupsVariant.userType() != QMetaType::Type::QVariantList )
    mWidget->setDatasetGroupIndexes( QList<int>() );
 
  QVariantList datasetGroupsListVariant = datasetGroupsVariant.toList();
 
  QList<int> datasetGroupsIndexes;
  for ( const QVariant &variantIndex : datasetGroupsListVariant )
    datasetGroupsIndexes << variantIndex.toInt();
 
  mWidget->setDatasetGroupIndexes( datasetGroupsIndexes );
}
 
QWidget *QgsProcessingMeshDatasetTimeWidgetWrapper::createWidget()
{
  mWidget = new QgsProcessingMeshDatasetTimeWidget( nullptr, static_cast<const QgsProcessingParameterMeshDatasetTime *>( parameterDefinition() ), widgetContext() );
 
  QgsMapCanvas *canvas = widgetContext().mapCanvas();
  if ( canvas )
  {
    connect( canvas, &QgsMapCanvas::temporalRangeChanged, mWidget, &QgsProcessingMeshDatasetTimeWidget::updateValue );
  }
  connect( mWidget, &QgsProcessingMeshDatasetTimeWidget::changed, this, [this] {
    emit widgetValueHasChanged( this );
  } );
 
  return mWidget;
}
 
void QgsProcessingMeshDatasetTimeWidgetWrapper::setWidgetValue( const QVariant &value, QgsProcessingContext &context )
{
  Q_UNUSED( context );
  if ( mWidget )
    mWidget->setValue( value );
}
 
QVariant QgsProcessingMeshDatasetTimeWidgetWrapper::widgetValue() const
{
  if ( mWidget )
    return mWidget->value();
  return QVariant();
}
 
QgsProcessingMeshDatasetTimeWidget::QgsProcessingMeshDatasetTimeWidget( QWidget *parent, const QgsProcessingParameterMeshDatasetTime *param, const QgsProcessingParameterWidgetContext &context )
  : QWidget( parent ), mParam( param )
{
  setupUi( this );
 
  mValue.insert( QStringLiteral( "type" ), QStringLiteral( "static" ) );
 
  dateTimeEdit->setDisplayFormat( "yyyy-MM-dd HH:mm:ss" );
 
  mCanvas = context.mapCanvas();
 
  connect( radioButtonCurrentCanvasTime, &QRadioButton::toggled, this, [this]( bool isChecked ) {if ( isChecked ) this->updateValue(); } );
  connect( radioButtonDefinedDateTime, &QRadioButton::toggled, this, [this]( bool isChecked ) {if ( isChecked ) this->updateValue(); } );
  connect( radioButtonDatasetGroupTimeStep, &QRadioButton::toggled, this, [this]( bool isChecked ) {if ( isChecked ) this->updateValue(); } );
  connect( dateTimeEdit, &QgsDateTimeEdit::dateTimeChanged, this, &QgsProcessingMeshDatasetTimeWidget::updateValue );
  connect( comboBoxDatasetTimeStep, qOverload<int>( &QComboBox::currentIndexChanged ), this, &QgsProcessingMeshDatasetTimeWidget::updateValue );
 
  updateWidget();
}
 
void QgsProcessingMeshDatasetTimeWidget::setMeshLayer( QgsMeshLayer *layer, bool layerFromProject )
{
  if ( mMeshLayer == layer )
    return;
 
  mReferenceTime = QDateTime();
 
  if ( layerFromProject )
  {
    mMeshLayer = layer;
    mReferenceTime = static_cast<QgsMeshLayerTemporalProperties *>( layer->temporalProperties() )->referenceTime();
  }
  else
  {
    mMeshLayer = nullptr;
    if ( layer )
      mReferenceTime = layer->dataProvider()->temporalCapabilities()->referenceTime();
    storeTimeStepsFromLayer( layer );
  }
 
  if ( mReferenceTime.isValid() )
    whileBlocking( dateTimeEdit )->setDateTime( mReferenceTime );
 
  updateValue();
}
 
void QgsProcessingMeshDatasetTimeWidget::setDatasetGroupIndexes( const QList<int> datasetGroupIndexes )
{
  if ( datasetGroupIndexes == mDatasetGroupIndexes )
    return;
  mDatasetGroupIndexes = datasetGroupIndexes;
  populateTimeSteps();
  updateValue();
}
 
void QgsProcessingMeshDatasetTimeWidget::setValue( const QVariant &value )
{
  if ( !value.isValid() || ( value.userType() != QMetaType::Type::QVariantMap && !value.toDateTime().isValid() ) )
    return;
 
  mValue.clear();
  if ( value.toDateTime().isValid() )
  {
    QDateTime dateTime = value.toDateTime();
    dateTime.setTimeSpec( Qt::UTC );
    mValue.insert( QStringLiteral( "type" ), QStringLiteral( "defined-date-time" ) );
    mValue.insert( QStringLiteral( "value" ), dateTime );
  }
  else
    mValue = value.toMap();
 
  if ( !mValue.contains( QStringLiteral( "type" ) ) || !mValue.contains( QStringLiteral( "value" ) ) )
    return;
 
  QString type = mValue.value( QStringLiteral( "type" ) ).toString();
 
  setEnabled( true );
  if ( type == QLatin1String( "static" ) )
  {
    setEnabled( false );
  }
  else if ( type == QLatin1String( "dataset-time-step" ) )
  {
    QVariantList dataset = mValue.value( QStringLiteral( "value" ) ).toList();
    whileBlocking( comboBoxDatasetTimeStep )->setCurrentIndex( comboBoxDatasetTimeStep->findData( dataset ) );
    whileBlocking( radioButtonDatasetGroupTimeStep )->setChecked( true );
  }
  else if ( type == QLatin1String( "defined-date-time" ) )
  {
    whileBlocking( dateTimeEdit )->setDateTime( mValue.value( QStringLiteral( "value" ) ).toDateTime() );
    whileBlocking( radioButtonDefinedDateTime )->setChecked( true );
  }
  else if ( type == QLatin1String( "current-context-time" ) )
  {
    whileBlocking( radioButtonCurrentCanvasTime )->setChecked( true );
  }
 
  emit changed();
  updateWidget();
}
 
QVariant QgsProcessingMeshDatasetTimeWidget::value() const
{
  return mValue;
}
 
void QgsProcessingMeshDatasetTimeWidget::updateWidget()
{
  bool isStatic = !hasTemporalDataset();
  setEnabled( !isStatic );
 
  if ( mCanvas && mCanvas->mapSettings().isTemporal() )
  {
    whileBlocking( radioButtonCurrentCanvasTime )->setEnabled( true && mReferenceTime.isValid() );
    labelCurrentCanvasTime->setText( mCanvas->mapSettings().temporalRange().begin().toString( "yyyy-MM-dd HH:mm:ss" ) );
  }
  else
  {
    whileBlocking( radioButtonCurrentCanvasTime )->setEnabled( false );
    if ( radioButtonCurrentCanvasTime->isChecked() )
      whileBlocking( radioButtonDefinedDateTime )->setChecked( true );
  }
 
  if ( !mReferenceTime.isValid() )
    whileBlocking( radioButtonDatasetGroupTimeStep )->setChecked( true );
 
  whileBlocking( radioButtonDefinedDateTime )->setEnabled( mReferenceTime.isValid() );
 
  dateTimeEdit->setVisible( radioButtonDefinedDateTime->isChecked() && !isStatic );
  labelCurrentCanvasTime->setVisible( radioButtonCurrentCanvasTime->isChecked() && !isStatic );
  comboBoxDatasetTimeStep->setVisible( radioButtonDatasetGroupTimeStep->isChecked() && !isStatic );
}
 
bool QgsProcessingMeshDatasetTimeWidget::hasTemporalDataset() const
{
  for ( int index : mDatasetGroupIndexes )
  {
    if ( mMeshLayer && mMeshLayer->datasetGroupMetadata( index ).isTemporal() )
      return true;
    else if ( mDatasetTimeSteps.contains( index ) )
      return true;
  }
 
  return false;
}
 
 
void QgsProcessingMeshDatasetTimeWidget::populateTimeSteps()
{
  if ( mMeshLayer )
  {
    populateTimeStepsFromLayer();
    return;
  }
 
  QMap<quint64, QgsMeshDatasetIndex> timeStep;
  for ( int groupIndex : mDatasetGroupIndexes )
  {
    if ( !mDatasetTimeSteps.contains( groupIndex ) )
      continue;
    const QList<qint64> relativeTimeSteps = mDatasetTimeSteps.value( groupIndex );
    for ( int index = 0; index < relativeTimeSteps.count(); ++index )
    {
      QgsMeshDatasetIndex datasetIndex( groupIndex, index );
      if ( timeStep.contains( relativeTimeSteps.at( index ) ) )
        continue;
      timeStep[relativeTimeSteps.at( index )] = datasetIndex;
    }
  }
 
  for ( auto it = timeStep.constBegin(); it != timeStep.constEnd(); it++ )
  {
    QString stringTime = QgsMeshLayerUtils::formatTime( static_cast<double>( it.key() ) / 1000. / 3600., mReferenceTime, QgsMeshTimeSettings() );
    QVariantList data;
    const QgsMeshDatasetIndex &index = it.value();
    data << index.group() << index.dataset();
    whileBlocking( comboBoxDatasetTimeStep )->addItem( stringTime, data );
  }
}
 
void QgsProcessingMeshDatasetTimeWidget::populateTimeStepsFromLayer()
{
  whileBlocking( comboBoxDatasetTimeStep )->clear();
 
  if ( !mMeshLayer )
    return;
 
  QMap<quint64, QgsMeshDatasetIndex> timeStep;
  for ( int groupIndex : std::as_const( mDatasetGroupIndexes ) )
  {
    QgsMeshDatasetGroupMetadata meta = mMeshLayer->datasetGroupMetadata( groupIndex );
    if ( !meta.isTemporal() )
      continue;
    int datasetCount = mMeshLayer->datasetCount( groupIndex );
 
    for ( int index = 0; index < datasetCount; ++index )
    {
      QgsMeshDatasetIndex datasetIndex( groupIndex, index );
      qint64 relativeTime = mMeshLayer->datasetRelativeTimeInMilliseconds( datasetIndex );
      if ( timeStep.contains( relativeTime ) )
        continue;
      timeStep[relativeTime] = datasetIndex;
    }
  }
 
  for ( auto it = timeStep.constBegin(); it != timeStep.constEnd(); it++ )
  {
    QString stringTime = mMeshLayer->formatTime( static_cast<double>( it.key() ) / 1000.0 / 3600.0 );
    QVariantList data;
    const QgsMeshDatasetIndex &index = it.value();
    data << index.group() << index.dataset();
    whileBlocking( comboBoxDatasetTimeStep )->addItem( stringTime, data );
  }
}
 
void QgsProcessingMeshDatasetTimeWidget::storeTimeStepsFromLayer( QgsMeshLayer *layer )
{
  mDatasetTimeSteps.clear();
  if ( !layer )
    return;
  QList<int> datasetGroupsList = layer->datasetGroupsIndexes();
  for ( int groupIndex : datasetGroupsList )
  {
    QgsMeshDatasetGroupMetadata meta = layer->datasetGroupMetadata( groupIndex );
    if ( !meta.isTemporal() )
      continue;
    int datasetCount = layer->datasetCount( groupIndex );
    QList<qint64> relativeTimeSteps;
    relativeTimeSteps.reserve( datasetCount );
    for ( int index = 0; index < datasetCount; ++index )
      relativeTimeSteps.append( layer->datasetRelativeTimeInMilliseconds( QgsMeshDatasetIndex( groupIndex, index ) ) );
    mDatasetTimeSteps[groupIndex] = relativeTimeSteps;
  }
}
 
void QgsProcessingMeshDatasetTimeWidget::buildValue()
{
  mValue.clear();
 
  if ( !isEnabled() )
  {
    mValue[QStringLiteral( "type" )] = QStringLiteral( "static" );
  }
  else if ( radioButtonDatasetGroupTimeStep->isChecked() )
  {
    mValue[QStringLiteral( "type" )] = QStringLiteral( "dataset-time-step" );
    mValue[QStringLiteral( "value" )] = comboBoxDatasetTimeStep->currentData();
  }
  else if ( radioButtonDefinedDateTime->isChecked() )
  {
    mValue[QStringLiteral( "type" )] = QStringLiteral( "defined-date-time" );
    mValue[QStringLiteral( "value" )] = dateTimeEdit->dateTime();
  }
  else if ( radioButtonCurrentCanvasTime->isChecked() && mCanvas )
  {
    mValue[QStringLiteral( "type" )] = QStringLiteral( "current-context-time" );
  }
 
  emit changed();
}
 
void QgsProcessingMeshDatasetTimeWidget::updateValue()
{
  updateWidget();
  buildValue();
}
 
 
QgsProcessingMeshDatasetGroupsParameterDefinitionWidget::QgsProcessingMeshDatasetGroupsParameterDefinitionWidget(
  QgsProcessingContext &context,
  const QgsProcessingParameterWidgetContext &widgetContext,
  const QgsProcessingParameterDefinition *definition,
  const QgsProcessingAlgorithm *algorithm,
  QWidget *parent
)
  : QgsProcessingAbstractParameterDefinitionWidget( context, widgetContext, definition, algorithm, parent )
{
  QVBoxLayout *vlayout = new QVBoxLayout();
  vlayout->setContentsMargins( 0, 0, 0, 0 );
 
  vlayout->addWidget( new QLabel( tr( "Linked input" ) ) );
 
  mParentLayerComboBox = new QComboBox();
  vlayout->addWidget( mParentLayerComboBox );
 
  if ( QgsProcessingModelAlgorithm *model = widgetContext.model() )
  {
    const QMap<QString, QgsProcessingModelParameter> components = model->parameterComponents();
    for ( auto it = components.constBegin(); it != components.constEnd(); ++it )
    {
      const QgsProcessingParameterDefinition *def = model->parameterDefinition( it.value().parameterName() );
      if ( def && def->type() == QgsProcessingParameterMeshLayer::typeName() )
      {
        mParentLayerComboBox->addItem( def->description(), def->name() );
      }
    }
  }
 
  const QgsProcessingParameterMeshDatasetGroups *datasetGroupDef = static_cast<const QgsProcessingParameterMeshDatasetGroups *>( definition );
  if ( datasetGroupDef )
  {
    int currentIndex = mParentLayerComboBox->findData( datasetGroupDef->meshLayerParameterName() );
    if ( currentIndex != -1 )
      mParentLayerComboBox->setCurrentIndex( currentIndex );
    else if ( !datasetGroupDef->meshLayerParameterName().isEmpty() )
    {
      // if no layer parameter candidates found, we just add the existing one as a placeholder
      mParentLayerComboBox->addItem( datasetGroupDef->meshLayerParameterName(), datasetGroupDef->meshLayerParameterName() );
      mParentLayerComboBox->setCurrentIndex( mParentLayerComboBox->count() - 1 );
    }
  }
 
  setLayout( vlayout );
}
 
QgsProcessingParameterDefinition *QgsProcessingMeshDatasetGroupsParameterDefinitionWidget::createParameter(
  const QString &name,
  const QString &description,
  Qgis::ProcessingParameterFlags flags
) const
{
  QSet<int> supportedDataType;
  supportedDataType.insert( QgsMeshDatasetGroupMetadata::DataOnEdges );
  supportedDataType.insert( QgsMeshDatasetGroupMetadata::DataOnVertices );
  supportedDataType.insert( QgsMeshDatasetGroupMetadata::DataOnFaces );
  supportedDataType.insert( QgsMeshDatasetGroupMetadata::DataOnVolumes );
  auto param = std::make_unique<QgsProcessingParameterMeshDatasetGroups>( name, description, mParentLayerComboBox->currentData().toString(), supportedDataType );
  param->setFlags( flags );
  return param.release();
}
 
QgsProcessingMeshDatasetTimeParameterDefinitionWidget::QgsProcessingMeshDatasetTimeParameterDefinitionWidget(
  QgsProcessingContext &context,
  const QgsProcessingParameterWidgetContext &widgetContext,
  const QgsProcessingParameterDefinition *definition,
  const QgsProcessingAlgorithm *algorithm,
  QWidget *parent
)
  : QgsProcessingAbstractParameterDefinitionWidget( context, widgetContext, definition, algorithm, parent )
{
  if ( definition )
  {
    const QgsProcessingParameterMeshDatasetTime *datasetTimeDef = static_cast<const QgsProcessingParameterMeshDatasetTime *>( definition );
    mMeshLayerParameterName = datasetTimeDef->meshLayerParameterName();
  }
 
  QVBoxLayout *vlayout = new QVBoxLayout();
  vlayout->setContentsMargins( 0, 0, 0, 0 );
 
  vlayout->addWidget( new QLabel( tr( "Linked input" ) ) );
 
  mParentDatasetComboBox = new QComboBox();
  vlayout->addWidget( mParentDatasetComboBox );
 
  QgsProcessingModelAlgorithm *model = widgetContext.model();
  if ( model )
  {
    const QMap<QString, QgsProcessingModelParameter> components = model->parameterComponents();
    for ( auto it = components.constBegin(); it != components.constEnd(); ++it )
    {
      const QgsProcessingParameterDefinition *def = model->parameterDefinition( it.value().parameterName() );
      if ( def && def->type() == QgsProcessingParameterMeshDatasetGroups::typeName() )
        mParentDatasetComboBox->addItem( def->description(), def->name() );
    }
  }
 
  if ( definition )
  {
    const QgsProcessingParameterMeshDatasetTime *datasetTimeDef = static_cast<const QgsProcessingParameterMeshDatasetTime *>( definition );
    int currentIndex = mParentDatasetComboBox->findData( datasetTimeDef->datasetGroupParameterName() );
    if ( currentIndex != -1 )
      mParentDatasetComboBox->setCurrentIndex( currentIndex );
    else if ( !datasetTimeDef->meshLayerParameterName().isEmpty() )
    {
      // if no layer parameter candidates found, we just add the existing one as a placeholder
      mParentDatasetComboBox->addItem( datasetTimeDef->datasetGroupParameterName(), datasetTimeDef->datasetGroupParameterName() );
      mParentDatasetComboBox->setCurrentIndex( mParentDatasetComboBox->count() - 1 );
    }
  }
 
  if ( model )
  {
    const QgsProcessingParameterDefinition *currentDef = model->parameterDefinition( mParentDatasetComboBox->currentData().toString() );
    if ( currentDef )
      mMeshLayerParameterName = static_cast<const QgsProcessingParameterMeshDatasetGroups *>( currentDef )->meshLayerParameterName();
 
    connect( mParentDatasetComboBox, qOverload<int>( &QComboBox::currentIndexChanged ), this, [this, model] {
      const QgsProcessingParameterDefinition *currentDef = model->parameterDefinition( mParentDatasetComboBox->currentData().toString() );
      if ( currentDef )
        mMeshLayerParameterName = static_cast<const QgsProcessingParameterMeshDatasetGroups *>( currentDef )->meshLayerParameterName();
    } );
  }
 
  setLayout( vlayout );
}
 
QgsProcessingParameterDefinition *QgsProcessingMeshDatasetTimeParameterDefinitionWidget::createParameter( const QString &name, const QString &description, Qgis::ProcessingParameterFlags flags ) const
{
  auto param = std::make_unique<QgsProcessingParameterMeshDatasetTime>(
    name, description, mMeshLayerParameterName, mParentDatasetComboBox->currentData().toString()
  );
 
  param->setFlags( flags );
  return param.release();
}