[gitg] Preserve ref collapsed state

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 07983e8ca1c3a0b9073d3ede037eeea6ad47b6fd
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Sun Aug 9 09:44:52 2015 +0200

    Preserve ref collapsed state

 gitg/history/gitg-history-refs-list.vala |   47 ++++++++++++++++++++++++++----
 1 files changed, 41 insertions(+), 6 deletions(-)
---
diff --git a/gitg/history/gitg-history-refs-list.vala b/gitg/history/gitg-history-refs-list.vala
index af944f1..fcab205 100644
--- a/gitg/history/gitg-history-refs-list.vala
+++ b/gitg/history/gitg-history-refs-list.vala
@@ -479,6 +479,12 @@ private class RefHeader : RefTyped, Gtk.ListBoxRow
 
 public class RefsList : Gtk.ListBox
 {
+       private struct HeaderState
+       {
+               public Gitg.RefType type;
+               public string name;
+       }
+
        private Gitg.Repository? d_repository;
        private Gee.HashMap<Gitg.Ref, RefRow> d_ref_map;
        private Gtk.ListBoxRow? d_selected_row;
@@ -488,6 +494,7 @@ public class RefsList : Gtk.ListBox
        private RefHeader? d_all_remotes;
        private RefHeader? d_all_tags;
        private RefRow.SortOrder d_ref_sort_order;
+       private HeaderState[] d_collapsed;
 
        public signal void changed();
 
@@ -780,13 +787,25 @@ public class RefsList : Gtk.ListBox
                invalidate_filter();
        }
 
-       private RefHeader add_header(Gitg.RefType ref_type, string name)
+       private void init_header(RefHeader header)
        {
-               var header = new RefHeader(ref_type, name);
                header.show();
-
                header.notify["expanded"].connect(expanded_changed);
 
+               foreach (var state in d_collapsed)
+               {
+                       if (state.name == header.ref_name && state.type == header.ref_type)
+                       {
+                               header.expanded = false;
+                       }
+               }
+       }
+
+       private RefHeader add_header(Gitg.RefType ref_type, string name)
+       {
+               var header = new RefHeader(ref_type, name);
+               init_header(header);
+
                add(header);
                return header;
        }
@@ -851,9 +870,7 @@ public class RefsList : Gtk.ListBox
                }
 
                var header = new RefHeader.remote(name, remote);
-               header.show();
-
-               header.notify["expanded"].connect(expanded_changed);
+               init_header(header);
 
                d_header_map[name] = new RemoteHeader(header);
                add(header);
@@ -1056,11 +1073,29 @@ public class RefsList : Gtk.ListBox
                return false;
        }
 
+       private void store_collapsed_state()
+       {
+               d_collapsed = new HeaderState[0];
+
+               @foreach((child) => {
+                       var header = child as RefHeader;
+
+                       if (header != null && !header.expanded)
+                       {
+                               d_collapsed += HeaderState() {
+                                       name = header.ref_name,
+                                       type = header.ref_type
+                               };
+                       }
+               });
+       }
+
        private void refresh()
        {
                freeze_notify();
 
                d_selected_row = get_selected_row();
+               store_collapsed_state();
 
                clear();