When buffer closes, focus on parent buffer (#4766)

pull/1/head
wes adams 2 years ago committed by GitHub
parent 1569d2000b
commit 19694877aa
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GPG Key ID: 4AEE18F83AFDEB23

@ -219,7 +219,7 @@ impl Tree {
if self.focus == index { if self.focus == index {
// focus on something else // focus on something else
self.focus = self.next(); self.focus = self.prev();
} }
stack.push(index); stack.push(index);
@ -521,6 +521,26 @@ impl Tree {
Some(child_id) Some(child_id)
} }
pub fn prev(&self) -> ViewId {
// This function is very dumb, but that's because we don't store any parent links.
// (we'd be able to go parent.prev_sibling() recursively until we find something)
// For now that's okay though, since it's unlikely you'll be able to open a large enough
// number of splits to notice.
let mut views = self
.traverse()
.rev()
.skip_while(|&(id, _view)| id != self.focus)
.skip(1); // Skip focused value
if let Some((id, _)) = views.next() {
id
} else {
// extremely crude, take the last item
let (key, _) = self.traverse().rev().next().unwrap();
key
}
}
pub fn next(&self) -> ViewId { pub fn next(&self) -> ViewId {
// This function is very dumb, but that's because we don't store any parent links. // This function is very dumb, but that's because we don't store any parent links.
// (we'd be able to go parent.next_sibling() recursively until we find something) // (we'd be able to go parent.next_sibling() recursively until we find something)
@ -661,6 +681,23 @@ impl<'a> Iterator for Traverse<'a> {
} }
} }
impl<'a> DoubleEndedIterator for Traverse<'a> {
fn next_back(&mut self) -> Option<Self::Item> {
loop {
let key = self.stack.pop()?;
let node = &self.tree.nodes[key];
match &node.content {
Content::View(view) => return Some((key, view)),
Content::Container(container) => {
self.stack.extend(container.children.iter());
}
}
}
}
}
#[cfg(test)] #[cfg(test)]
mod test { mod test {
use super::*; use super::*;

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