[gedit] replace-open-button: re-create simple Open Recent menu button (UI)

[Sébastien Wilmet <swilmet src gnome org>]

commit 1ee984a4147931e2f7d76837eecdef8c5ddfdd97
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Tue Nov 26 10:58:01 2019 +0100

    replace-open-button: re-create simple Open Recent menu button (UI)
    
    Just the UI as a first step.

 gedit/gedit-window.c | 33 +++++++++++++++++++++++----------
 1 file changed, 23 insertions(+), 10 deletions(-)
---
diff --git a/gedit/gedit-window.c b/gedit/gedit-window.c
index 6f91fdb90..44b4c423f 100644
--- a/gedit/gedit-window.c
+++ b/gedit/gedit-window.c
@@ -2644,19 +2644,32 @@ sync_fullscreen_actions (GeditWindow *window,
 }
 
 static void
-init_open_button (GeditWindow *window)
+init_open_buttons (GeditWindow *window)
 {
-       GtkWidget *open_button;
+       GtkWidget *hgrid;
+       GtkStyleContext *style_context;
+       GtkWidget *open_dialog_button;
+       GtkWidget *open_recent_button;
 
-       open_button = gtk_button_new_with_mnemonic (_("_Open"));
-       gtk_widget_set_tooltip_text (open_button, _("Open a file"));
-       gtk_actionable_set_action_name (GTK_ACTIONABLE (open_button), "win.open");
-       gtk_widget_show (open_button);
+       hgrid = gtk_grid_new ();
+       style_context = gtk_widget_get_style_context (hgrid);
+       gtk_style_context_add_class (style_context, GTK_STYLE_CLASS_LINKED);
+
+       open_dialog_button = gtk_button_new_with_mnemonic (_("_Open"));
+       gtk_widget_set_tooltip_text (open_dialog_button, _("Open a file"));
+       gtk_actionable_set_action_name (GTK_ACTIONABLE (open_dialog_button), "win.open");
+
+       open_recent_button = gtk_menu_button_new ();
+       gtk_widget_set_tooltip_text (open_recent_button, _("Open a recently used file"));
+       // gtk_menu_button_set_popup(); to set a GtkMenu.
+
+       gtk_container_add (GTK_CONTAINER (hgrid), open_dialog_button);
+       gtk_container_add (GTK_CONTAINER (hgrid), open_recent_button);
+       gtk_widget_show_all (hgrid);
 
-       /* Add before the New Tab button. */
        gtk_container_add_with_properties (GTK_CONTAINER (window->priv->headerbar),
-                                          open_button,
-                                          "position", 0,
+                                          hgrid,
+                                          "position", 0, /* The first on the left. */
                                           NULL);
 }
 
@@ -2688,7 +2701,7 @@ gedit_window_init (GeditWindow *window)
        window->priv->message_bus = gedit_message_bus_new ();
 
        gtk_widget_init_template (GTK_WIDGET (window));
-       init_open_button (window);
+       init_open_buttons (window);
 
        g_action_map_add_action_entries (G_ACTION_MAP (window),
                                         win_entries,