qgslistwidgetwrapper.cpp

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/***************************************************************************
    qgslistwidgetwrapper.cpp
     --------------------------------------
    Date                 : 09.2016
    Copyright            : (C) 2016 Patrick Valsecchi
    Email                : [email protected]
 ***************************************************************************
 *                                                                         *
 *   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 "qgslistwidgetwrapper.h"
#include "qgslistwidget.h"
#include "qgsattributeform.h"
 
QgsListWidgetWrapper::QgsListWidgetWrapper( QgsVectorLayer *layer, int fieldIdx, QWidget *editor, QWidget *parent ):
  QgsEditorWidgetWrapper( layer, fieldIdx, editor, parent )
{
}
 
void QgsListWidgetWrapper::showIndeterminateState()
{
  mWidget->setList( QVariantList() );
}
 
void QgsListWidgetWrapper::setEnabled( bool enabled )
{
  if ( mWidget )
  {
    mWidget->setReadOnly( !enabled );
  }
}
 
QWidget *QgsListWidgetWrapper::createWidget( QWidget *parent )
{
  QFrame *ret = new QFrame( parent );
  ret->setFrameShape( QFrame::StyledPanel );
  QHBoxLayout *layout = new QHBoxLayout( ret );
  layout->setContentsMargins( 0, 0, 0, 0 );
  QgsListWidget *widget = new QgsListWidget( field().subType(), ret );
  layout->addWidget( widget );
 
  if ( isInTable( parent ) )
  {
    // if to be put in a table, set a decent size
    ret->setMinimumSize( QSize( 320, 110 ) );
  }
  return ret;
}
 
void QgsListWidgetWrapper::initWidget( QWidget *editor )
{
  mWidget = qobject_cast<QgsListWidget *>( editor );
  if ( !mWidget )
  {
    mWidget = editor->findChild<QgsListWidget *>();
  }
 
  connect( mWidget, &QgsListWidget::valueChanged, this, &QgsListWidgetWrapper::onValueChanged );
}
 
bool QgsListWidgetWrapper::valid() const
{
  return mWidget ? mWidget->valid() : true;
}
 
void QgsListWidgetWrapper::updateValues( const QVariant &value, const QVariantList & )
{
  mWidget->setList( value.toList() );
}
 
QVariant QgsListWidgetWrapper::value() const
{
  const QMetaType::Type type = field().type();
  if ( !mWidget ) return QgsVariantUtils::createNullVariant( type );
  const QVariantList list = mWidget->list();
  if ( list.size() == 0 && config( QStringLiteral( "EmptyIsNull" ) ).toBool() )
  {
    return QVariant( );
  }
  if ( type == QMetaType::Type::QStringList )
  {
    QStringList result;
    for ( QVariantList::const_iterator it = list.constBegin(); it != list.constEnd(); ++it )
      result.append( it->toString() );
    return result;
  }
  else
  {
    return list;
  }
}
 
void QgsListWidgetWrapper::onValueChanged()
{
  emitValueChanged();
}
 
void QgsListWidgetWrapper::updateConstraintWidgetStatus()
{
  // Nothing
}