GroupItem.cpp

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/Model/BaseItem/GroupItem.cpp
//! @brief     Implements class GroupItem
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************
 
#include "GUI/Model/BaseItem/GroupItem.h"
#include "GUI/Util/ComboProperty.h"
#include "GUI/Util/Error.h"
 
GroupItem::GroupItem()
    : SessionItem(M_TYPE)
{
    registerTag(T_ITEMS);
    setDefaultTag(T_ITEMS);
 
    mapper()->setOnValueChange([this]() { onValueChange(); });
}
 
GroupItem::~GroupItem() = default;
 
void GroupItem::setGroupInfo(const GroupInfo& groupInfo)
{
    if (m_controller)
        throw Error("GroupItem::setGroup() -> Error. Attempt to set group twice.");
 
    m_controller = std::make_unique<GroupItemController>(this, groupInfo);
    updateComboValue();
}
 
SessionItem* GroupItem::currentItem() const
{
    return m_controller ? m_controller->currentItem() : nullptr;
}
 
QString GroupItem::currentType() const
{
    return m_controller->currentType();
}
 
SessionItem* GroupItem::setCurrentType(const QString& modelType)
{
    m_controller->setCurrentType(modelType);
    updateComboValue();
    return currentItem();
}
 
SessionItem* GroupItem::getItemOfType(const QString& type) const
{
    return m_controller->getItemOfType(type);
}
 
QVector<SessionItem*> GroupItem::groupItems() const
{
    return getItems(T_ITEMS);
}
 
bool GroupItem::isItemsTagName(const QString& name)
{
    return name == T_ITEMS;
}
 
void GroupItem::onValueChange()
{
    if (!value().canConvert<ComboProperty>())
        throw Error("GroupItem::onValueChange() -> Error. Wrong property type");
 
    auto property = value().value<ComboProperty>();
    if (property.currentIndex() != m_controller->currentIndex()) {
        m_controller->setCurrentIndex(property.currentIndex());
        // because of the delay between ComboProperty change and the change in GroupItem here,
        // we have to emit signals once again to inform other views (i.e. views other than the view
        // were property was changed)
        emitDataChanged(Qt::DisplayRole | Qt::EditRole);
    }
}
 
void GroupItem::updateComboValue()
{
    setValue(m_controller->createCombo());
}