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use crate::{theme::Theme, tree::Tree, Document, View};
use std::path::PathBuf;
use slotmap::DefaultKey as Key;
use anyhow::Error;
pub struct Editor {
pub tree: Tree,
// pub documents: Vec<Document>,
pub count: Option<usize>,
pub theme: Theme,
pub language_servers: helix_lsp::Registry,
pub executor: &'static smol::Executor<'static>,
}
impl Editor {
pub fn new(executor: &'static smol::Executor<'static>, mut area: tui::layout::Rect) -> Self {
let theme = Theme::default();
let language_servers = helix_lsp::Registry::new();
// HAXX: offset the render area height by 1 to account for prompt/commandline
area.height -= 1;
Self {
tree: Tree::new(area),
count: None,
theme,
language_servers,
executor,
}
}
pub fn open(&mut self, path: PathBuf) -> Result<(), Error> {
let existing_view = self
.tree
.views()
.find(|(view, _)| view.doc.path() == Some(&path));
if let Some((view, _)) = existing_view {
self.tree.focus = view.id;
return Ok(());
}
let mut doc = Document::load(path, self.theme.scopes())?;
// try to find a language server based on the language name
let language_server = doc
.language
.as_ref()
.and_then(|language| self.language_servers.get(language, self.executor));
if let Some(language_server) = language_server {
doc.set_language_server(Some(language_server.clone()));
let language_id = doc
.language()
.and_then(|s| s.split('.').last()) // source.rust
.map(ToOwned::to_owned)
.unwrap_or_default();
smol::block_on(language_server.text_document_did_open(
doc.url().unwrap(),
doc.version(),
doc.text(),
language_id,
))
.unwrap();
}
let view = View::new(doc)?;
self.tree.insert(view);
Ok(())
}
pub fn close(&mut self, id: Key) {
let view = self.tree.get(self.tree.focus);
// get around borrowck issues
let language_servers = &mut self.language_servers;
let executor = self.executor;
let doc = &view.doc;
let language_server = doc
.language
.as_ref()
.and_then(|language| language_servers.get(language, executor));
if let Some(language_server) = language_server {
smol::block_on(language_server.text_document_did_close(doc.identifier())).unwrap();
}
self.tree.remove(id)
}
pub fn should_close(&self) -> bool {
self.tree.is_empty()
}
pub fn view(&self) -> &View {
self.tree.get(self.tree.focus)
}
pub fn view_mut(&mut self) -> &mut View {
self.tree.get_mut(self.tree.focus)
}
pub fn cursor_position(&self) -> Option<helix_core::Position> {
const OFFSET: u16 = 7; // 1 diagnostic + 5 linenr + 1 gutter
let view = self.view();
let cursor = view.doc.selection().cursor();
if let Some(mut pos) = view.screen_coords_at_pos(view.doc.text().slice(..), cursor) {
pos.col += view.area.x as usize + OFFSET as usize;
pos.row += view.area.y as usize;
return Some(pos);
}
None
}
}
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