[gnome-builder/wip/gtk4-port] plugins/symbol-tree: move selection with up/down

[Christian Hergert <chergert src gnome org>]

commit d57d44228721bc2e7e90243d4d095b155389d57c
Author: Christian Hergert <chergert redhat com>
Date:   Fri May 13 08:14:33 2022 -0700

    plugins/symbol-tree: move selection with up/down

 src/plugins/symbol-tree/gbp-symbol-popover.c  | 33 +++++++++++++++++++++++++++
 src/plugins/symbol-tree/gbp-symbol-popover.ui |  6 +++++
 2 files changed, 39 insertions(+)
---
diff --git a/src/plugins/symbol-tree/gbp-symbol-popover.c b/src/plugins/symbol-tree/gbp-symbol-popover.c
index 035318044..205fd7057 100644
--- a/src/plugins/symbol-tree/gbp-symbol-popover.c
+++ b/src/plugins/symbol-tree/gbp-symbol-popover.c
@@ -135,6 +135,38 @@ gbp_symbol_popover_grab_focus (GtkWidget *widget)
   return gtk_widget_grab_focus (GTK_WIDGET (GBP_SYMBOL_POPOVER (widget)->search_entry));
 }
 
+static gboolean
+on_search_key_pressed_cb (GbpSymbolPopover      *self,
+                          guint                  keyval,
+                          guint                  keycode,
+                          GdkModifierType        state,
+                          GtkEventControllerKey *key)
+{
+  g_assert (GBP_IS_SYMBOL_POPOVER (self));
+  g_assert (GTK_IS_EVENT_CONTROLLER_KEY (key));
+
+  if ((state & (GDK_CONTROL_MASK | GDK_ALT_MASK)) == 0)
+    {
+      switch (keyval)
+        {
+        case GDK_KEY_Up:
+        case GDK_KEY_KP_Up:
+          ide_gtk_list_view_move_previous (self->list_view);
+          return TRUE;
+
+        case GDK_KEY_Down:
+        case GDK_KEY_KP_Down:
+          ide_gtk_list_view_move_next (self->list_view);
+          return TRUE;
+
+        default:
+          break;
+        }
+    }
+
+  return FALSE;
+}
+
 static void
 gbp_symbol_popover_dispose (GObject *object)
 {
@@ -211,6 +243,7 @@ gbp_symbol_popover_class_init (GbpSymbolPopoverClass *klass)
   gtk_widget_class_bind_template_child (widget_class, GbpSymbolPopover, search_entry);
   gtk_widget_class_bind_template_callback (widget_class, gbp_symbol_popover_activate_cb);
   gtk_widget_class_bind_template_callback (widget_class, gbp_symbol_popover_search_changed_cb);
+  gtk_widget_class_bind_template_callback (widget_class, on_search_key_pressed_cb);
 }
 
 static void
diff --git a/src/plugins/symbol-tree/gbp-symbol-popover.ui b/src/plugins/symbol-tree/gbp-symbol-popover.ui
index bbbc44627..18b862333 100644
--- a/src/plugins/symbol-tree/gbp-symbol-popover.ui
+++ b/src/plugins/symbol-tree/gbp-symbol-popover.ui
@@ -36,6 +36,12 @@
           <object class="GtkSearchEntry" id="search_entry">
             <property name="placeholder-text" translatable="yes">Filter Symbols…</property>
             <signal name="search-changed" handler="gbp_symbol_popover_search_changed_cb" swapped="true" 
object="GbpSymbolPopover"/>
+            <child>
+              <object class="GtkEventControllerKey">
+                <property name="propagation-phase">capture</property>
+                <signal name="key-pressed" handler="on_search_key_pressed_cb" swapped="true" 
object="GbpSymbolPopover"/>
+              </object>
+            </child>
           </object>
         </child>
       </object>