Pull out draw code into closure

src/interactive/app.rs

@@ -34,14 +34,11 @@ pub struct Traversal {
 }
 
 impl Traversal {
- pub fn from_walk<B>(
- terminal: &mut Terminal<B>,
+ pub fn from_walk(
  options: WalkOptions,
  input: Vec<PathBuf>,
- ) -> Result<Traversal, Error>
- where
- B: Backend,
- {
+ mut update: impl FnMut(&Traversal) -> Result<(), Error>,
+ ) -> Result<Traversal, Error> {
  fn set_size_or_panic(
  tree: &mut Tree,
  parent_node_idx: TreeIndex,
@@ -158,14 +155,7 @@ impl Traversal {
  last_seen_eid = eid;
  last_checked = now;
 
- terminal.draw(|mut f| {
- let full_screen = f.size();
- super::widgets::Entries {
- tree: &t.tree,
- root: t.root_index,
- }
- .render(&mut f, full_screen)
- })?;
+ update(&t)?;
  }
  }
  }
@@ -213,7 +203,17 @@ impl TerminalApp {
  B: Backend,
  {
  Ok(TerminalApp {
- traversal: Traversal::from_walk(terminal, options, input)?,
+ traversal: Traversal::from_walk(options, input, |t| {
+ terminal.draw(|mut f| {
+ let full_screen = f.size();
+ super::widgets::Entries {
+ tree: &t.tree,
+ root: t.root_index,
+ }
+ .render(&mut f, full_screen)
+ })?;
+ Ok(())
+ })?,
  })
  }
 }