From b242394c0f9c24ca8f9bbced44076abbcd274fee Mon Sep 17 00:00:00 2001
From: Mikaël Capelle <capelle.mikael@gmail.com>
Date: Mon, 4 Jan 2021 19:37:20 +0100
Subject: Keep track of expanded items in the view instead of the models.

---
 src/modlistview.h | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

(limited to 'src/modlistview.h')

diff --git a/src/modlistview.h b/src/modlistview.h
index faa33b6a..ed4ad2d0 100644
--- a/src/modlistview.h
+++ b/src/modlistview.h
@@ -1,6 +1,8 @@
 #ifndef MODLISTVIEW_H
 #define MODLISTVIEW_H
 
+#include <map>
+#include <set>
 #include <vector>
 
 #include <QLabel>
@@ -203,10 +205,9 @@ private:
   std::pair<QModelIndex, QModelIndexList> selected() const;
   void setSelected(const QModelIndex& current, const QModelIndexList& selected);
 
-  // call expand() after fixing the index if it comes from the source
-  // of the proxy
+  // refresh stored expanded items for the current intermediate proxy
   //
-  void expandItem(const QModelIndex& index);
+  void refreshExpandedItems();
 
   // refresh the group-by proxy, if the index is -1 will refresh the
   // current one (e.g. when changing the sort column)
@@ -249,6 +250,10 @@ private:
   QtGroupingProxy* m_byCategoryProxy;
   QtGroupingProxy* m_byNexusIdProxy;
 
+  // maintain collapsed items for each proxy to avoid
+  // losing them on model reset
+  std::map<QAbstractItemModel*, std::set<QString>> m_collapsed;
+
   struct MarkerInfos {
     // conflicts
     std::set<unsigned int> overwrite;
-- 
cgit v1.3.1