implement bar box as trait

src/app/browser/window/header/bar/widget.rs

@@ -1,30 +0,0 @@
-use gtk::{
-    prelude::{BoxExt, IsA},
-    Box, Orientation,
-};
-
-pub struct Widget {
-    pub g_box: Box,
-}
-
-impl Widget {
-    // Constructors
-
-    /// Build new `Self`
-    pub fn build(
-        control: &impl IsA<gtk::Widget>,
-        menu: &impl IsA<gtk::Widget>,
-        tab: &impl IsA<gtk::Widget>,
-    ) -> Self {
-        let g_box = Box::builder()
-            .orientation(Orientation::Horizontal)
-            .spacing(8)
-            .build();
-
-        g_box.append(tab);
-        g_box.append(menu);
-        g_box.append(control);
-
-        Self { g_box }
-    }
-}