[gnome-builder] symbol-tree: jump to first match on entry activate

[Christian Hergert <chergert src gnome org>]

commit 5c9badc8ba482adad00f2b622024b1263973c7dd
Author: Christian Hergert <chergert redhat com>
Date:   Tue Mar 27 15:22:42 2018 -0700

    symbol-tree: jump to first match on entry activate
    
    This jumps to the first item in the tree when Enter is pressed within the
    search entry. You can now ctrl+shift+k, type, Enter to jump to a symbol
    very similar to using global search.

 src/plugins/symbol-tree/gbp-symbol-menu-button.c  | 25 +++++++++++++++++++++++
 src/plugins/symbol-tree/gbp-symbol-menu-button.ui |  1 +
 2 files changed, 26 insertions(+)
---
diff --git a/src/plugins/symbol-tree/gbp-symbol-menu-button.c 
b/src/plugins/symbol-tree/gbp-symbol-menu-button.c
index 9d74f14e7..22c3787fe 100644
--- a/src/plugins/symbol-tree/gbp-symbol-menu-button.c
+++ b/src/plugins/symbol-tree/gbp-symbol-menu-button.c
@@ -112,6 +112,30 @@ gbp_symbol_menu_button_get_icon_cell (GbpSymbolMenuButton *self)
   return cell;
 }
 
+static void
+on_entry_activate (GbpSymbolMenuButton *self,
+                   GtkSearchEntry      *entry)
+{
+  GtkTreeModel *model;
+  GtkTreeIter iter;
+
+  g_assert (GBP_IS_SYMBOL_MENU_BUTTON (self));
+  g_assert (GTK_IS_SEARCH_ENTRY (entry));
+
+  model = gtk_tree_view_get_model (GTK_TREE_VIEW (self->tree));
+
+  if (gtk_tree_model_get_iter_first (model, &iter))
+    {
+      GtkTreePath *path;
+      GtkTreeViewColumn *column;
+
+      path = gtk_tree_path_new_first ();
+      column = gtk_tree_view_get_column (GTK_TREE_VIEW (self->tree), 0);
+      gtk_tree_view_row_activated (GTK_TREE_VIEW (self->tree), path, column);
+      gtk_tree_path_free (path);
+    }
+}
+
 static void
 gbp_symbol_menu_button_destroy (GtkWidget *widget)
 {
@@ -181,6 +205,7 @@ gbp_symbol_menu_button_class_init (GbpSymbolMenuButtonClass *klass)
   gtk_widget_class_bind_template_child (widget_class, GbpSymbolMenuButton, symbol_title);
   gtk_widget_class_bind_template_child (widget_class, GbpSymbolMenuButton, tree);
   gtk_widget_class_bind_template_child (widget_class, GbpSymbolMenuButton, tree_builder);
+  gtk_widget_class_bind_template_callback (widget_class, on_entry_activate);
 
   properties [PROP_SYMBOL_TREE] =
     g_param_spec_object ("symbol-tree",
diff --git a/src/plugins/symbol-tree/gbp-symbol-menu-button.ui 
b/src/plugins/symbol-tree/gbp-symbol-menu-button.ui
index 5ae48666d..cc425d04a 100644
--- a/src/plugins/symbol-tree/gbp-symbol-menu-button.ui
+++ b/src/plugins/symbol-tree/gbp-symbol-menu-button.ui
@@ -26,6 +26,7 @@
           <object class="GtkSearchEntry" id="search_entry">
             <property name="margin-bottom">6</property>
             <property name="visible">true</property>
+            <signal name="activate" handler="on_entry_activate" swapped="yes" object="GbpSymbolMenuButton"/>
           </object>
         </child>
         <child>