qgsrelationwidgetregistry.cpp

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/***************************************************************************
                         qgsrelationwidgetregistry.h
                         ----------------------
    begin                : October 2020
    copyright            : (C) 2020 by Ivan Ivanov
    email                : ivan@opengis.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 "qgsrelationwidgetregistry.h"
 
#include "qgsrelationeditorwidget.h"
 
QgsRelationWidgetRegistry::QgsRelationWidgetRegistry()
{
  QgsRelationEditorWidgetFactory *factory = new QgsRelationEditorWidgetFactory();
  addRelationWidget( factory );
  setDefaultWidgetType( factory->type() );
}
 
QgsRelationWidgetRegistry::~QgsRelationWidgetRegistry()
{
  qDeleteAll( mRelationWidgetFactories );
  mRelationWidgetFactories.clear();
}
 
void QgsRelationWidgetRegistry::addRelationWidget( QgsAbstractRelationEditorWidgetFactory *widgetFactory )
{
  if ( !widgetFactory )
    return;
 
  if ( mRelationWidgetFactories.contains( widgetFactory->type() ) )
    return;
 
  mRelationWidgetFactories.insert( widgetFactory->type(), widgetFactory );
}
 
void QgsRelationWidgetRegistry::removeRelationWidget( const QString &widgetType )
{
  // protect the default relation editor widget from removing, so the user has at least one relation widget type
  if ( widgetType == mDefaultWidgetType )
    return;
 
  mRelationWidgetFactories.remove( widgetType );
}
 
QStringList QgsRelationWidgetRegistry::relationWidgetNames() const
{
  return mRelationWidgetFactories.keys();
}
 
void QgsRelationWidgetRegistry::setDefaultWidgetType( const QString &defaultWidgetType )
{
  if ( !mRelationWidgetFactories.contains( defaultWidgetType ) )
    return;
 
  mDefaultWidgetType = defaultWidgetType;
}
 
QString QgsRelationWidgetRegistry::defaultWidgetType() const
{
  return mDefaultWidgetType;
}
 
QMap<QString, QgsAbstractRelationEditorWidgetFactory *> QgsRelationWidgetRegistry::factories() const
{
  return mRelationWidgetFactories;
}
 
QgsAbstractRelationEditorWidget *QgsRelationWidgetRegistry::create( const QString &widgetType, const QVariantMap &config, QWidget *parent ) const
{
  auto it = mRelationWidgetFactories.constFind( widgetType );
  if ( it == mRelationWidgetFactories.constEnd() )
    return nullptr;
 
  return it.value()->create( config, parent );
}
 
QgsAbstractRelationEditorConfigWidget *QgsRelationWidgetRegistry::createConfigWidget( const QString &widgetType, const QgsRelation &relation, QWidget *parent ) const
{
  auto it = mRelationWidgetFactories.constFind( widgetType );
  if ( it == mRelationWidgetFactories.constEnd() )
    return nullptr;
 
  return it.value()->configWidget( relation, parent );
}