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// ************************************************************************** //
//
// BornAgain: simulate and fit scattering at grazing incidence
//
//! @file GUI/coregui/Views/CommonWidgets/ItemComboWidget.cpp
//! @brief Implements class ItemComboWidget
//!
//! @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/coregui/Views/CommonWidgets/ItemComboWidget.h"
#include "Base/Utils/Assert.h"
#include "GUI/coregui/Views/CommonWidgets/ItemComboToolBar.h"
#include "GUI/coregui/utils/GUIHelpers.h"
#include <QComboBox>
#include <QEvent>
#include <QStackedWidget>
#include <QVBoxLayout>
ItemComboWidget::ItemComboWidget(QWidget* parent)
: SessionItemWidget(parent), m_toolBar(new ItemComboToolBar),
m_stackedWidget(new QStackedWidget)
{
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
m_stackedWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
QVBoxLayout* layout = new QVBoxLayout;
layout->setMargin(0);
layout->setSpacing(0);
layout->setContentsMargins(0, 0, 0, 0);
layout->addWidget(m_toolBar);
layout->addWidget(m_stackedWidget);
setLayout(layout);
connect(m_toolBar, SIGNAL(comboChanged(QString)), this, SLOT(onComboChanged(QString)));
}
void ItemComboWidget::registerWidget(const QString& presentationType, factory_function_t f)
{
m_widgetFactory.registerItem(presentationType, f);
}
//! Sets stack to show widget corresponding to given presentation
void ItemComboWidget::setPresentation(const QString& presentationType)
{
if (!activePresentationList(currentItem()).contains(presentationType))
return;
m_toolBar->setPresentation(presentationType);
ASSERT(currentItem());
SessionItemWidget* widget = m_presentationTypeToWidget[presentationType];
if (!widget) {
widget = m_widgetFactory.createItemPtr(presentationType).release();
m_stackedWidget->addWidget(widget);
m_presentationTypeToWidget[presentationType] = widget;
}
ASSERT(widget);
widget->setItem(currentItem());
m_toolBar->setActionList(widget->actionList());
m_stackedWidget->setCurrentWidget(widget);
if (widget->isHidden())
widget->show();
setSizeToCurrentWidget();
}
void ItemComboWidget::setToolBarVisible(bool value)
{
m_toolBar->setVisible(value);
}
//! Returns list of active presentations for given item. Active presentation is the one
//! which is present in QComboBox selector and can be selected. For example, if JobItem
//! is fittable, the list will contain "FitComparisonWidgetName".
QStringList ItemComboWidget::activePresentationList(SessionItem* item)
{
Q_UNUSED(item);
return QStringList();
}
//! Returns full list of presentations available for given item.
QStringList ItemComboWidget::presentationList(SessionItem* item)
{
return activePresentationList(item);
}
//! Presentation which should be shown for current item.
QString ItemComboWidget::itemPresentation() const
{
return selectedPresentation();
}
//! Presentation selected in combo selector.
QString ItemComboWidget::selectedPresentation() const
{
return m_toolBar->currentPresentation();
}
void ItemComboWidget::subscribeToItem()
{
m_toolBar->setPresentationList(presentationList(currentItem()),
activePresentationList(currentItem()));
setPresentation(itemPresentation());
}
void ItemComboWidget::onComboChanged(const QString&)
{
setPresentation(selectedPresentation());
}
//! Resizes QStackedWidget to currently active page.
void ItemComboWidget::setSizeToCurrentWidget()
{
for (int i = 0; i < m_stackedWidget->count(); ++i) {
// determine the vertical size policy
QSizePolicy::Policy policy = QSizePolicy::Ignored;
if (i == m_stackedWidget->currentIndex())
policy = QSizePolicy::Expanding;
// update the size policy
auto page = m_stackedWidget->widget(i);
page->setSizePolicy(policy, policy);
}
}
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