[gnome-text-editor] searchbar: handle up/down keys while focused on search entry

[Christian Hergert <chergert src gnome org>]

commit 4c6733a3e4248706516d951bee50c8173c2969e0
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jun 30 14:24:19 2021 -0700

    searchbar: handle up/down keys while focused on search entry

 src/editor-search-bar.c  | 31 +++++++++++++++++++++++++++++++
 src/editor-search-bar.ui |  5 +++++
 2 files changed, 36 insertions(+)
---
diff --git a/src/editor-search-bar.c b/src/editor-search-bar.c
index c45596b..619a1c1 100644
--- a/src/editor-search-bar.c
+++ b/src/editor-search-bar.c
@@ -306,6 +306,36 @@ on_notify_search_text_cb (EditorSearchBar *self,
   self->scroll_to_first_match = TRUE;
 }
 
+static gboolean
+on_search_key_pressed_cb (GtkEventControllerKey *key,
+                          guint                  keyval,
+                          guint                  keycode,
+                          GdkModifierType        state,
+                          EditorSearchBar       *self)
+{
+  g_assert (GTK_IS_EVENT_CONTROLLER_KEY (key));
+  g_assert (EDITOR_IS_SEARCH_BAR (self));
+
+  if (state == 0)
+    {
+      switch (keyval)
+        {
+        case GDK_KEY_Up:
+          _editor_search_bar_move_next (self, FALSE);
+          return TRUE;
+
+        case GDK_KEY_Down:
+          _editor_search_bar_move_previous (self, FALSE);
+          return TRUE;
+
+        default:
+          break;
+        }
+    }
+
+  return FALSE;
+}
+
 static void
 editor_search_bar_dispose (GObject *object)
 {
@@ -409,6 +439,7 @@ editor_search_bar_class_init (EditorSearchBarClass *klass)
   gtk_widget_class_bind_template_child (widget_class, EditorSearchBar, search_entry);
   gtk_widget_class_bind_template_child (widget_class, EditorSearchBar, word_button);
   gtk_widget_class_bind_template_callback (widget_class, editor_search_bar_search_activate_cb);
+  gtk_widget_class_bind_template_callback (widget_class, on_search_key_pressed_cb);
 
   signals [MOVE_NEXT_SEARCH] =
     g_signal_new_class_handler ("move-next-search",
diff --git a/src/editor-search-bar.ui b/src/editor-search-bar.ui
index d69ff22..341011c 100644
--- a/src/editor-search-bar.ui
+++ b/src/editor-search-bar.ui
@@ -17,6 +17,11 @@
               <property name="row">0</property>
               <property name="column">0</property>
             </layout>
+            <child>
+              <object class="GtkEventControllerKey">
+                <signal name="key-pressed" handler="on_search_key_pressed_cb"/>
+              </object>
+            </child>
           </object>
         </child>
         <child>