refactor(custom): split into enum with separate file per widget

src/modules/custom/box.rs

@@ -0,0 +1,43 @@
+use super::{try_get_orientation, CustomWidget, CustomWidgetContext, Widget};
+use gtk::prelude::*;
+use gtk::Orientation;
+use serde::Deserialize;
+
+#[derive(Debug, Deserialize, Clone)]
+pub struct BoxWidget {
+    name: Option<String>,
+    class: Option<String>,
+    orientation: Option<String>,
+    widgets: Option<Vec<Widget>>,
+}
+
+impl CustomWidget for BoxWidget {
+    type Widget = gtk::Box;
+
+    fn into_widget(self, context: CustomWidgetContext) -> Self::Widget {
+        let mut builder = gtk::Box::builder();
+
+        if let Some(name) = self.name {
+            builder = builder.name(&name);
+        }
+
+        if let Some(orientation) = self.orientation {
+            builder = builder
+                .orientation(try_get_orientation(&orientation).unwrap_or(Orientation::Horizontal));
+        }
+
+        let container = builder.build();
+
+        if let Some(class) = self.class {
+            container.style_context().add_class(&class);
+        }
+
+        if let Some(widgets) = self.widgets {
+            for widget in widgets {
+                widget.add_to(&container, context);
+            }
+        }
+
+        container
+    }
+}