wip: Content and Widget traits

crates/tek_test/src/main.rs

@@ -1,23 +1,53 @@
 use tek_core::*;
+use tek_core::jack::*;
 
 pub fn main () -> Usually<()> {
     Tui::run(Arc::new(RwLock::new(Demo::new())))?;
     Ok(())
 }
 
-pub struct Demo {
+pub struct Demo<E: Engine> {
     index: usize,
-    items: Vec<Box<dyn Component<Tui>>>
+    items: Vec<Box<dyn Component<E>>>
 }
 
-impl Demo {
+impl Demo<Tui> {
     fn new () -> Self {
-        let items = vec![];
+        let mut items: Vec<Box<dyn Component<Tui>>> = vec![];
+        items.push(Box::new(tek_sequencer::TransportPlayPauseButton {
+            value:   Some(TransportState::Stopped),
+            focused: true
+        }));
+        items.push(Box::new(tek_sequencer::TransportPlayPauseButton {
+            value:   Some(TransportState::Rolling),
+            focused: false
+        }));
         Self { index: 0, items }
     }
+    fn content <'a> (&'a self) -> impl Layout<Tui> + 'a {
+        Align::Center(Layers(&[
+            &Outset::WH(2, 1, FillBg(Color::Rgb(0,128,128))),
+            &Layers(&[
+                &"---------",
+                &Align::Center("...")
+            ])
+        ]))
+    }
 }
 
-impl Handle<Tui> for Demo {
+impl Layout<Tui> for Demo<Tui> {
+    fn layout (&self, area: [u16;4]) -> Perhaps<[u16;4]> {
+        self.content().layout(area)
+    }
+}
+
+impl Render<Tui> for Demo<Tui> {
+    fn render (&self, to: &mut Tui) -> Perhaps<[u16;4]> {
+        self.content().render(to)
+    }
+}
+
+impl Handle<Tui> for Demo<Tui> {
     fn handle (&mut self, from: &Tui) -> Perhaps<bool> {
         match from.event() {
             key!(KeyCode::PageUp) => {
@@ -36,15 +66,3 @@ impl Handle<Tui> for Demo {
         }
     }
 }
-
-impl Layout<Tui> for Demo {
-    fn layout (&self, area: [u16;4]) -> Perhaps<[u16;4]> {
-        Align::Center(self.items[self.index]).layout(area)
-    }
-}
-
-impl Render<Tui> for Demo {
-    fn render (&self, to: &mut Tui) -> Perhaps<[u16;4]> {
-        Align::Center(self.items[self.index]).render(to)
-    }
-}