From a105e4c8c881ac720c41ef342769adee14caca47 Mon Sep 17 00:00:00 2001
From: Mikaël Capelle <capelle.mikael@gmail.com>
Date: Thu, 31 Dec 2020 12:34:17 +0100
Subject: Move more stuff from MainWindow. Minor improvements for prev/next
 button in ModInfoDialog.

---
 src/modlistview.cpp | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

(limited to 'src/modlistview.cpp')

diff --git a/src/modlistview.cpp b/src/modlistview.cpp
index 40959e6d..f2b83beb 100644
--- a/src/modlistview.cpp
+++ b/src/modlistview.cpp
@@ -128,7 +128,7 @@ ModListViewActions& ModListView::actions() const
   return *m_actions;
 }
 
-int ModListView::nextMod(int modIndex) const
+std::optional<unsigned int> ModListView::nextMod(unsigned int modIndex) const
 {
   const QModelIndex start = indexModelToView(m_core->modList()->index(modIndex, 0));
 
@@ -156,10 +156,10 @@ int ModListView::nextMod(int modIndex) const
     return modIndex;
   }
 
-  return -1;
+  return {};
 }
 
-int ModListView::prevMod(int modIndex) const
+std::optional<unsigned int> ModListView::prevMod(unsigned int  modIndex) const
 {
   const QModelIndex start = indexModelToView(m_core->modList()->index(modIndex, 0));
 
@@ -187,7 +187,7 @@ int ModListView::prevMod(int modIndex) const
     return modIndex;
   }
 
-  return -1;
+  return {};
 }
 
 void ModListView::enableAllVisible()
@@ -730,6 +730,7 @@ void ModListView::setup(OrganizerCore& core, CategoryFactory& factory, FilterLis
       m_byPriorityProxy->refreshExpandedItems();
     }
   });
+  connect(selectionModel(), &QItemSelectionModel::selectionChanged, this, &ModListView::onSelectionChanged);
 }
 
 void ModListView::setModel(QAbstractItemModel* model)
@@ -848,6 +849,17 @@ void ModListView::onDoubleClicked(const QModelIndex& index)
   }
 }
 
+void ModListView::onSelectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
+{
+  if (hasCollapsibleSeparators()) {
+    for (auto& idx : selected.indexes()) {
+      if (idx.parent().isValid() && !isExpanded(idx.parent())) {
+        setExpanded(idx.parent(), true);
+      }
+    }
+  }
+}
+
 void ModListView::dragEnterEvent(QDragEnterEvent* event)
 {
   emit dragEntered(event->mimeData());
-- 
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