wip set view

src/musicplayer/ui/control.gleam

@@ -5,6 +5,7 @@ import musicplayer/ui/layout.{type Section}
 pub type Control {
   UpdateDimensions(columns: Int, rows: Int)
   UpdateState(section: Section, content: String)
+  SetView(view_idx: layout.ViewIdx)
 
   Exit(reply_to: Subject(Nil))
 }

src/musicplayer/ui/layout.gleam

@@ -123,6 +123,9 @@ pub fn update_dimensions(layout: Layout, columns: Int, rows: Int) -> Layout {
   Layout(..layout, columns:, rows:)
 }
 
+pub fn set_view(layout: Layout, view_idx: ViewIdx) -> Layout {
+  Layout(..layout, current_view: view_idx)
+}
 
 pub fn render(layout: Layout) -> Nil {
   let context =
@@ -142,6 +145,7 @@ pub fn render(layout: Layout) -> Nil {
       render_loop(
         view,
         context,
+        // TODO extract to function `view_index`
         Section(string.append("view_", string.inspect(layout.current_view))),
         buffer,
       )

src/musicplayer/ui/ui.gleam

@@ -120,6 +120,12 @@ fn handle_message(
       process.send(reply_to, Nil)
       actor.stop()
     }
+    control.SetView(view_idx) -> {
+      let layout = layout.set_view(state.layout, view_idx)
+
+      actor.send(state.redraw, layout)
+      actor.continue(State(..state, layout:))
+    }
   }
 }