[gnome-builder/wip/gtk4-port] plugins/buildui: insert actions on pane

[Christian Hergert <chergert src gnome org>]

commit 038fa693b4ef1db14846bb915f11bc07db1569e5
Author: Christian Hergert <chergert redhat com>
Date:   Fri Apr 29 10:10:33 2022 -0700

    plugins/buildui: insert actions on pane
    
    Until we can set action muxer parents, we'll have to install these to
    the pane so that we can actually activate them from the popover (which
    has to be parented there because GtkTreeView can't host them).

 src/plugins/buildui/gbp-buildui-tree-addin.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/src/plugins/buildui/gbp-buildui-tree-addin.c b/src/plugins/buildui/gbp-buildui-tree-addin.c
index cdab48de2..88fdf0425 100644
--- a/src/plugins/buildui/gbp-buildui-tree-addin.c
+++ b/src/plugins/buildui/gbp-buildui-tree-addin.c
@@ -41,6 +41,7 @@ struct _GbpBuilduiTreeAddin
   IdeTreeModel *model;
 
   /* Owned references */
+  GtkWidget    *pane;
   GActionGroup *group;
 };
 
@@ -310,6 +311,7 @@ gbp_buildui_tree_addin_load (IdeTreeAddin *addin,
 {
   GbpBuilduiTreeAddin *self = (GbpBuilduiTreeAddin *)addin;
   IdeContext *context;
+  GtkWidget *pane;
   static const GActionEntry actions[] = {
     { "build", gbp_buildui_tree_addin_action_build },
     { "rebuild", gbp_buildui_tree_addin_action_rebuild },
@@ -329,12 +331,16 @@ gbp_buildui_tree_addin_load (IdeTreeAddin *addin,
   if (!ide_context_has_project (context))
     return;
 
+  pane = gtk_widget_get_ancestor (GTK_WIDGET (tree), IDE_TYPE_PANE);
+  g_assert (IDE_IS_PANE (pane));
+
+  self->pane = g_object_ref (pane);
   self->group = G_ACTION_GROUP (g_simple_action_group_new ());
   g_action_map_add_action_entries (G_ACTION_MAP (self->group),
                                    actions,
                                    G_N_ELEMENTS (actions),
                                    self);
-  gtk_widget_insert_action_group (GTK_WIDGET (tree), "buildui", self->group);
+  gtk_widget_insert_action_group (pane, "buildui", self->group);
 }
 
 static void
@@ -349,8 +355,9 @@ gbp_buildui_tree_addin_unload (IdeTreeAddin *addin,
   g_assert (IDE_IS_TREE (tree));
   g_assert (IDE_IS_TREE_MODEL (model));
 
-  gtk_widget_insert_action_group (GTK_WIDGET (tree), "buildui", NULL);
+  gtk_widget_insert_action_group (self->pane, "buildui", NULL);
 
+  g_clear_object (&self->pane);
   g_clear_object (&self->group);
   self->model = NULL;
   self->tree = NULL;