mirror of https://github.com/helix-editor/helix
Filter the completion menu based on text entered.
parent
2a3910c1d9
commit
a24c3fff54
@ -0,0 +1,149 @@
|
||||
use crate::compositor::{Component, Compositor, Context, EventResult};
|
||||
use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};
|
||||
use tui::{
|
||||
buffer::Buffer as Surface,
|
||||
layout::Rect,
|
||||
style::{Color, Style},
|
||||
widgets::{Block, Borders},
|
||||
};
|
||||
|
||||
use std::borrow::Cow;
|
||||
|
||||
use helix_core::{Position, Transaction};
|
||||
use helix_view::Editor;
|
||||
|
||||
use crate::ui::{Menu, Popup, PromptEvent};
|
||||
|
||||
use helix_lsp::lsp;
|
||||
use lsp::CompletionItem;
|
||||
|
||||
/// Wraps a Menu.
|
||||
pub struct Completion {
|
||||
popup: Popup<Menu<CompletionItem>>, // TODO: Popup<Menu> need to be able to access contents.
|
||||
trigger_offset: usize,
|
||||
}
|
||||
|
||||
impl Completion {
|
||||
pub fn new(items: Vec<CompletionItem>, trigger_offset: usize) -> Self {
|
||||
// let items: Vec<CompletionItem> = Vec::new();
|
||||
let mut menu = Menu::new(
|
||||
items,
|
||||
|item| {
|
||||
// format_fn
|
||||
item.label.as_str().into()
|
||||
|
||||
// TODO: use item.filter_text for filtering
|
||||
},
|
||||
move |editor: &mut Editor, item, event| {
|
||||
match event {
|
||||
PromptEvent::Abort => {
|
||||
// revert state
|
||||
// let id = editor.view().doc;
|
||||
// let doc = &mut editor.documents[id];
|
||||
// doc.state = snapshot.clone();
|
||||
}
|
||||
PromptEvent::Validate => {
|
||||
let id = editor.view().doc;
|
||||
let doc = &mut editor.documents[id];
|
||||
|
||||
// revert state to what it was before the last update
|
||||
// doc.state = snapshot.clone();
|
||||
|
||||
// extract as fn(doc, item):
|
||||
|
||||
// TODO: need to apply without composing state...
|
||||
// TODO: need to update lsp on accept/cancel by diffing the snapshot with
|
||||
// the final state?
|
||||
// -> on update simply update the snapshot, then on accept redo the call,
|
||||
// finally updating doc.changes + notifying lsp.
|
||||
//
|
||||
// or we could simply use doc.undo + apply when changing between options
|
||||
|
||||
// always present here
|
||||
let item = item.unwrap();
|
||||
|
||||
use helix_lsp::{lsp, util};
|
||||
// determine what to insert: text_edit | insert_text | label
|
||||
let edit = if let Some(edit) = &item.text_edit {
|
||||
match edit {
|
||||
lsp::CompletionTextEdit::Edit(edit) => edit.clone(),
|
||||
lsp::CompletionTextEdit::InsertAndReplace(item) => {
|
||||
unimplemented!("completion: insert_and_replace {:?}", item)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
item.insert_text.as_ref().unwrap_or(&item.label);
|
||||
unimplemented!();
|
||||
// lsp::TextEdit::new(); TODO: calculate a TextEdit from insert_text
|
||||
// and we insert at position.
|
||||
};
|
||||
|
||||
// TODO: merge edit with additional_text_edits
|
||||
if let Some(additional_edits) = &item.additional_text_edits {
|
||||
if !additional_edits.is_empty() {
|
||||
unimplemented!(
|
||||
"completion: additional_text_edits: {:?}",
|
||||
additional_edits
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// if more text was entered, remove it
|
||||
let cursor = doc.selection().cursor();
|
||||
if trigger_offset < cursor {
|
||||
let remove = Transaction::change(
|
||||
doc.text(),
|
||||
vec![(trigger_offset, cursor, None)].into_iter(),
|
||||
);
|
||||
doc.apply(&remove);
|
||||
}
|
||||
|
||||
let transaction =
|
||||
util::generate_transaction_from_edits(doc.text(), vec![edit]);
|
||||
doc.apply(&transaction);
|
||||
}
|
||||
_ => (),
|
||||
};
|
||||
},
|
||||
);
|
||||
let popup = Popup::new(menu);
|
||||
Self {
|
||||
popup,
|
||||
trigger_offset,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Component for Completion {
|
||||
fn handle_event(&mut self, event: Event, cx: &mut Context) -> EventResult {
|
||||
// input
|
||||
if let Event::Key(KeyEvent {
|
||||
code: KeyCode::Char(ch),
|
||||
..
|
||||
}) = event
|
||||
{
|
||||
// recompute menu based on matches
|
||||
let menu = self.popup.contents();
|
||||
let id = cx.editor.view().doc;
|
||||
let doc = cx.editor.document(id).unwrap();
|
||||
|
||||
let cursor = doc.selection().cursor();
|
||||
if self.trigger_offset <= cursor {
|
||||
let fragment = doc.text().slice(self.trigger_offset..cursor);
|
||||
let text = Cow::from(fragment);
|
||||
// TODO: logic is same as ui/picker
|
||||
menu.score(&text);
|
||||
}
|
||||
}
|
||||
|
||||
self.popup.handle_event(event, cx)
|
||||
}
|
||||
|
||||
fn required_size(&mut self, viewport: (u16, u16)) -> Option<(u16, u16)> {
|
||||
self.popup.required_size(viewport)
|
||||
}
|
||||
|
||||
fn render(&self, area: Rect, surface: &mut Surface, cx: &mut Context) {
|
||||
self.popup.render(area, surface, cx)
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue