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Show completions as soon as possible

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Co-Authored-By: Nathan Sobo <nathan@zed.dev>
This commit is contained in:
Antonio Scandurra 2022-02-04 16:01:04 +01:00
parent 625beaaa9b
commit 55f0933872
1 changed files with 21 additions and 5 deletions
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26
crates/editor/src/editor.rs
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@ -383,6 +383,8 @@ pub enum SoftWrap {
Column(u32),
}
type CompletionId = usize;
pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
pub struct Editor {
@ -416,7 +418,8 @@ pub struct Editor {
highlighted_ranges: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
nav_history: Option<ItemNavHistory>,
completion_state: Option<CompletionState>,
completions_task: Option<Task<Option<()>>>,
completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
next_completion_id: CompletionId,
}
pub struct EditorSnapshot {
@ -457,6 +460,7 @@ struct SnippetState {
struct InvalidationStack<T>(Vec<T>);
struct CompletionState {
id: CompletionId,
initial_position: Anchor,
completions: Arc<[Completion<Anchor>]>,
match_candidates: Vec<StringMatchCandidate>,
@ -617,7 +621,8 @@ impl Editor {
highlighted_ranges: Default::default(),
nav_history: None,
completion_state: None,
completions_task: None,
completion_tasks: Default::default(),
next_completion_id: 0,
};
let selection = Selection {
id: post_inc(&mut this.next_selection_id),
@ -1628,11 +1633,13 @@ impl Editor {
.buffer
.update(cx, |buffer, cx| buffer.completions(position.clone(), cx));
self.completions_task = Some(cx.spawn_weak(|this, mut cx| {
let id = post_inc(&mut self.next_completion_id);
let task = cx.spawn_weak(|this, mut cx| {
async move {
let completions = completions.await?;
let mut completion_state = CompletionState {
id,
initial_position: position,
match_candidates: completions
.iter()
@ -1656,6 +1663,14 @@ impl Editor {
if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
this.update(&mut cx, |this, cx| {
if let Some(prev_completion_state) = this.completion_state.as_ref() {
if prev_completion_state.id > completion_state.id {
return;
}
}
this.completion_tasks
.retain(|(id, _)| *id > completion_state.id);
if completion_state.matches.is_empty() {
this.hide_completions(cx);
} else if this.focused {
@ -1668,12 +1683,13 @@ impl Editor {
Ok::<_, anyhow::Error>(())
}
.log_err()
}));
});
self.completion_tasks.push((id, task));
}
fn hide_completions(&mut self, cx: &mut ViewContext<Self>) -> Option<CompletionState> {
cx.notify();
self.completions_task.take();
self.completion_tasks.clear();
self.completion_state.take()
}