[gtksourceview] test-widget: hide vscrollbar when map is shown

[Christian Hergert <chergert src gnome org>]

commit a0512042b8dd9d2e2e44f61dad75df4ffaeb6961
Author: Christian Hergert <chergert redhat com>
Date:   Mon Aug 9 11:18:57 2021 -0700

    test-widget: hide vscrollbar when map is shown

 tests/test-widget.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
---
diff --git a/tests/test-widget.c b/tests/test-widget.c
index 2282772d..69500ba1 100644
--- a/tests/test-widget.c
+++ b/tests/test-widget.c
@@ -46,6 +46,7 @@ struct _TestWidget
        GtkSourceStyleSchemeChooserButton *chooser_button;
        GtkComboBoxText *background_pattern;
        GtkWidget *top;
+       GtkScrolledWindow *scrolledwindow1;
 };
 
 struct _TestHoverProvider
@@ -1034,6 +1035,7 @@ test_widget_class_init (TestWidgetClass *klass)
        gtk_widget_class_bind_template_child (widget_class, TestWidget, cursor_position_info);
        gtk_widget_class_bind_template_child (widget_class, TestWidget, chooser_button);
        gtk_widget_class_bind_template_child (widget_class, TestWidget, background_pattern);
+       gtk_widget_class_bind_template_child (widget_class, TestWidget, scrolledwindow1);
 
   gtk_widget_class_add_binding_action (widget_class, GDK_KEY_w, GDK_CONTROL_MASK, "window.close", NULL);
 }
@@ -1057,6 +1059,19 @@ show_top_border_window_toggled_cb (GtkCheckButton *checkbutton,
        gtk_widget_set_size_request (self->top, -1, size);
 }
 
+static gboolean
+boolean_to_scrollbar_policy (GBinding     *binding,
+                            const GValue *from_value,
+                            GValue       *to_value,
+                            gpointer      user_data)
+{
+       if (g_value_get_boolean (from_value))
+               g_value_set_enum (to_value, GTK_POLICY_EXTERNAL);
+       else
+               g_value_set_enum (to_value, GTK_POLICY_AUTOMATIC);
+       return TRUE;
+}
+
 static void
 test_widget_init (TestWidget *self)
 {
@@ -1131,6 +1146,13 @@ test_widget_init (TestWidget *self)
                                self->map,
                                "visible",
                                G_BINDING_SYNC_CREATE);
+       g_object_bind_property_full (self->show_map_checkbutton,
+                                    "active",
+                                    self->scrolledwindow1,
+                                    "vscrollbar-policy",
+                                    G_BINDING_SYNC_CREATE,
+                                    boolean_to_scrollbar_policy, NULL,
+                                    NULL, NULL);
 
        g_object_bind_property (self->smart_backspace_checkbutton,
                                "active",