ParameterTuningStackPresenter inherit directly from QStackedWidget

GUI/View/Tuning/JobRealTimeWidget.cpp

@@ -55,7 +55,7 @@ ParameterTuningWidget* JobRealTimeWidget::parameterTuningWidget()
 void JobRealTimeWidget::setJobItem(JobItem* jobItem)
 {
     if (!isValidJobItem(jobItem)) {
-        m_stacked_widget->hideWidgets();
+        m_stacked_widget->hide();
         return;
     }
     m_stacked_widget->setItem(jobItem, m_job_model);

GUI/View/Tuning/ParameterTuningStackPresenter.cpp

@@ -18,21 +18,23 @@
 void ParameterTuningStackPresenter::setItem(JobItem* item, QObject* model)
 {
     if (!item) {
-        hideWidgets();
+        hide();
         return;
     }
 
-    ParameterTuningWidget* widget = itemWidget();
-
-    if (!widget) {
+    ParameterTuningWidget* widget;
+    auto it = m_item_to_widget.find(item);
+    if (it != m_item_to_widget.end()) {
+        widget = it.value();
+    } else {
         widget = new ParameterTuningWidget;
-        m_stacked_widget->addWidget(widget);
+        addWidget(widget);
         m_item_to_widget[item] = widget;
     }
 
-    m_stacked_widget->setCurrentWidget(widget);
-    if (widget->isHidden())
-        widget->show();
+    setCurrentWidget(widget);
+    widget->show();
+    show();
 
     widget->setModel(model);
     widget->setJobItem(item);
@@ -40,7 +42,7 @@ void ParameterTuningStackPresenter::setItem(JobItem* item, QObject* model)
 
 ParameterTuningWidget* ParameterTuningStackPresenter::itemWidget()
 {
-    if (!m_item_to_widget.empty())
-        return m_item_to_widget.first();
-    return nullptr;
+    if (m_item_to_widget.empty())
+	return nullptr;
+    return dynamic_cast<ParameterTuningWidget*>(currentWidget());
 }

GUI/View/Tuning/ParameterTuningStackPresenter.h

@@ -15,13 +15,13 @@
 #ifndef BORNAGAIN_GUI_VIEW_TUNING_PARAMETERTUNINGSTACKPRESENTER_H
 #define BORNAGAIN_GUI_VIEW_TUNING_PARAMETERTUNINGSTACKPRESENTER_H
 
-#include "GUI/View/Widget/ItemStackWidget.h"
 #include <QMap>
+#include <QStackedWidget>
 
 class JobItem;
 class ParameterTuningWidget;
 
-class ParameterTuningStackPresenter : public ItemStackWidget {
+class ParameterTuningStackPresenter : public QStackedWidget {
 public:
     //! Shows the widget for given item (and hides previous one).
     //! If no widget yet exists, it will be created.