wip: refactor pt.12, separate tek_snd

crates/tek_tui/src/tui_app_foc.rs

@@ -0,0 +1,59 @@
+use crate::*;
+
+#[derive(Debug, Copy, Clone)]
+pub enum AppContainerCommand<T: std::fmt::Debug + Copy + Clone> {
+    Focus(FocusCommand),
+    App(T)
+}
+
+#[derive(Debug, Copy, Clone)]
+pub enum AppContainerFocus<F: std::fmt::Debug + Copy + Clone> {
+    Menu,
+    Content(F),
+}
+
+impl<T, C, U, A, S> FocusGrid for AppContainer<T, Tui, C, U, A, S>
+where
+    T: Send + Sync,
+    C: Command<T>,
+    U: From<Arc<RwLock<T>>> + Widget<Engine = Tui> + Handle<Tui> + FocusGrid,
+    A: From<Arc<RwLock<T>>> + Audio,
+    S: From<Arc<RwLock<T>>> + StatusBar<Tui>
+{
+    type Item = AppContainerFocus<<U as FocusGrid>::Item>;
+    fn cursor (&self) -> (usize, usize) {
+        self.cursor
+    }
+    fn cursor_mut (&mut self) -> &mut (usize, usize) {
+        &mut self.cursor
+    }
+    fn focus_enter (&mut self) {
+        let focused = self.focused();
+        if !self.entered {
+            self.entered = true;
+            // TODO
+        }
+    }
+    fn focus_exit (&mut self) {
+        if self.entered {
+            self.entered = false;
+            // TODO
+        }
+    }
+    fn entered (&self) -> Option<Self::Item> {
+        if self.entered {
+            Some(self.focused())
+        } else {
+            None
+        }
+    }
+    fn layout (&self) -> &[&[Self::Item]] {
+        &[
+            &[AppContainerFocus::Menu],
+            &[AppContainerFocus::Content],
+        ]
+    }
+    fn update_focus (&mut self) {
+        // TODO
+    }
+}