wip: broken collect enum

crates/tek_core/src/render_collect.rs

@@ -0,0 +1,41 @@
+use crate::*;
+
+pub enum Collected<'a> {
+    Box(Box<dyn Render + 'a>),
+    Ref(&'a (dyn Render + 'a)),
+    None
+}
+
+impl<'a> Render for Collected<'a> {
+    fn render (&self, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
+        Ok(match self {
+            Self::Box(item) => (*item).render(buf, area)?,
+            Self::Ref(item) => (*item).render(buf, area)?,
+            Self::None => ().render(buf, area)?
+        })
+    }
+}
+
+pub struct Collection<'a>(Vec<Collected<'a>>);
+
+impl<'a> Collection<'a> {
+    pub fn new () -> Self {
+        Self(vec![])
+    }
+}
+
+pub trait Collect<'a> {
+    fn add_box (self, item: Box<dyn Render>) -> Self;
+    fn add_ref (self, item: &'a dyn Render) -> Self;
+}
+
+impl<'a> Collect<'a> for Collection<'a> {
+    fn add_box (mut self, item: Box<dyn Render>) -> Self {
+        self.0.push(Collected::Box(item));
+        self
+    }
+    fn add_ref (mut self, item: &'a dyn Render) -> Self {
+        self.0.push(Collected::Ref(item));
+        self
+    }
+}