[gnome-control-center] window: Disable selection when panel list is folded

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 661df1b6830dea73f267334b5f5bc102e411ebd5
Author: Mohammed Sadiq <sadiq sadiqpk org>
Date:   Thu Jul 25 21:48:35 2019 +0530

    window: Disable selection when panel list is folded
    
    When the panel list is folded, either the panel items list or the
    panel itself is shown, not both.  And when the list is shown it
    doesn’t mean anything for an item to be marked as selected.

 shell/cc-panel-list.c | 23 +++++++++++++++++++++++
 shell/cc-panel-list.h |  3 +++
 shell/cc-window.c     | 16 ++++++++++++++++
 shell/cc-window.ui    |  1 +
 4 files changed, 43 insertions(+)
---
diff --git a/shell/cc-panel-list.c b/shell/cc-panel-list.c
index 67a0ac77f..e5134ac6b 100644
--- a/shell/cc-panel-list.c
+++ b/shell/cc-panel-list.c
@@ -1137,3 +1137,26 @@ cc_panel_list_add_sidebar_widget (CcPanelList *self,
         gtk_container_remove (GTK_CONTAINER (self), widget);
     }
 }
+
+void
+cc_panel_list_set_selection_mode (CcPanelList      *self,
+                                  GtkSelectionMode  selection_mode)
+{
+  g_return_if_fail (CC_IS_PANEL_LIST (self));
+
+  gtk_list_box_set_selection_mode (GTK_LIST_BOX (self->main_listbox), selection_mode);
+  gtk_list_box_set_selection_mode (GTK_LIST_BOX (self->devices_listbox), selection_mode);
+  gtk_list_box_set_selection_mode (GTK_LIST_BOX (self->details_listbox), selection_mode);
+
+  /* When selection mode changed, selection will be lost.  So reselect */
+  if (selection_mode == GTK_SELECTION_SINGLE && self->current_panel_id)
+    {
+      GtkWidget *listbox;
+      RowData *data;
+
+      data = g_hash_table_lookup (self->id_to_data, self->current_panel_id);
+      listbox = gtk_widget_get_parent (data->row);
+      gtk_list_box_select_row (GTK_LIST_BOX (listbox), GTK_LIST_BOX_ROW (data->row));
+    }
+}
+
diff --git a/shell/cc-panel-list.h b/shell/cc-panel-list.h
index 525734ea5..76995c2b8 100644
--- a/shell/cc-panel-list.h
+++ b/shell/cc-panel-list.h
@@ -73,6 +73,9 @@ void                 cc_panel_list_set_panel_visibility          (CcPanelList
 void                 cc_panel_list_add_sidebar_widget            (CcPanelList        *self,
                                                                   GtkWidget          *widget);
 
+void                 cc_panel_list_set_selection_mode            (CcPanelList        *self,
+                                                                  GtkSelectionMode    selection_mode);
+
 G_END_DECLS
 
 #endif /* CC_PANEL_LIST_H */
diff --git a/shell/cc-window.c b/shell/cc-window.c
index 6cbe22c71..8a6c6eeeb 100644
--- a/shell/cc-window.c
+++ b/shell/cc-window.c
@@ -536,6 +536,21 @@ notify_fold_cb (HdyLeaflet *leaflet,
   update_fold_state (shell);
 }
 
+static void
+on_main_leaflet_fold_changed_cb (CcWindow *self)
+{
+  GtkSelectionMode selection_mode;
+
+  g_assert (CC_IS_WINDOW (self));
+
+  selection_mode = GTK_SELECTION_SINGLE;
+
+  if (hdy_leaflet_get_fold (HDY_LEAFLET (self->main_leaflet)) == HDY_FOLD_FOLDED)
+    selection_mode = GTK_SELECTION_NONE;
+
+  cc_panel_list_set_selection_mode (CC_PANEL_LIST (self->panel_list), selection_mode);
+}
+
 static void
 show_panel_cb (CcPanelList *panel_list,
                const gchar *panel_id,
@@ -917,6 +932,7 @@ cc_window_class_init (CcWindowClass *klass)
   gtk_widget_class_bind_template_callback (widget_class, gdk_window_set_cb);
   gtk_widget_class_bind_template_callback (widget_class, notify_header_visible_child_cb);
   gtk_widget_class_bind_template_callback (widget_class, notify_fold_cb);
+  gtk_widget_class_bind_template_callback (widget_class, on_main_leaflet_fold_changed_cb);
   gtk_widget_class_bind_template_callback (widget_class, on_development_warning_dialog_responded_cb);
   gtk_widget_class_bind_template_callback (widget_class, previous_button_clicked_cb);
   gtk_widget_class_bind_template_callback (widget_class, search_entry_activate_cb);
diff --git a/shell/cc-window.ui b/shell/cc-window.ui
index 45f9182f1..e7b2a5d89 100644
--- a/shell/cc-window.ui
+++ b/shell/cc-window.ui
@@ -15,6 +15,7 @@
         <property name="can_focus">False</property>
         <property name="mode-transition-type">slide</property>
         <property name="child-transition-type">slide</property>
+        <signal name="notify::fold" handler="on_main_leaflet_fold_changed_cb" object="CcWindow" 
swapped="yes" />
         <child>
           <object class="GtkBox" id="sidebar_box">
             <property name="visible">True</property>