[gnome-builder] project-tree: refresh tree when node is expanded

[Christian Hergert <chergert src gnome org>]

commit 81ddccb806aa6b3507f440bd888d6bcd454cfa6a
Author: Christian Hergert <chergert redhat com>
Date:   Tue Nov 28 17:04:31 2017 -0800

    project-tree: refresh tree when node is expanded
    
    This actually works in the opposite fashion of the byline. What this does
    is remove all the children when the node is collapsed, and marks it for
    rebuild. That way, it gets rebuilt in the normal fashion when the node is
    expanded (and ensures we have a common flow for both cases now).

 src/plugins/project-tree/gb-project-tree-builder.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/src/plugins/project-tree/gb-project-tree-builder.c 
b/src/plugins/project-tree/gb-project-tree-builder.c
index 8e8fe8b..32893a1 100644
--- a/src/plugins/project-tree/gb-project-tree-builder.c
+++ b/src/plugins/project-tree/gb-project-tree-builder.c
@@ -78,6 +78,7 @@ build_context (GbProjectTreeBuilder *self,
                         "item", item,
                         "icon-name", "folder-symbolic",
                         "expanded-icon-name", "folder-open-symbolic",
+                        "reset-on-collapse", TRUE,
                         NULL);
   g_object_bind_property (project, "name", child, "text", G_BINDING_SYNC_CREATE);
   dzl_tree_node_append (node, child);
@@ -195,7 +196,10 @@ build_file (GbProjectTreeBuilder *self,
       dzl_tree_node_insert_sorted (node, child, compare_nodes_func, self);
 
       if (g_file_info_get_file_type (item_file_info) == G_FILE_TYPE_DIRECTORY)
-        dzl_tree_node_set_children_possible (child, TRUE);
+        {
+          dzl_tree_node_set_children_possible (child, TRUE);
+          dzl_tree_node_set_reset_on_collapse (child, TRUE);
+        }
 
       count++;
     }