lsp_log.rs

  1use collections::{HashMap, VecDeque};
  2use editor::{actions::MoveToEnd, Editor, EditorEvent};
  3use futures::{channel::mpsc, StreamExt};
  4use gpui::{
  5    actions, div, AnchorCorner, AnyElement, AppContext, Context, EventEmitter, FocusHandle,
  6    FocusableView, IntoElement, Model, ModelContext, ParentElement, Render, Styled, Subscription,
  7    View, ViewContext, VisualContext, WeakModel, WindowContext,
  8};
  9use language::{LanguageServerId, LanguageServerName};
 10use lsp::IoKind;
 11use project::{search::SearchQuery, Project};
 12use std::{borrow::Cow, sync::Arc};
 13use ui::{popover_menu, prelude::*, Button, Checkbox, ContextMenu, Label, Selection};
 14use util::maybe;
 15use workspace::{
 16    item::{Item, ItemHandle, TabContentParams},
 17    searchable::{SearchEvent, SearchableItem, SearchableItemHandle},
 18    ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView, Workspace,
 19};
 20
 21const SEND_LINE: &str = "// Send:";
 22const RECEIVE_LINE: &str = "// Receive:";
 23const MAX_STORED_LOG_ENTRIES: usize = 2000;
 24
 25pub struct LogStore {
 26    projects: HashMap<WeakModel<Project>, ProjectState>,
 27    io_tx: mpsc::UnboundedSender<(WeakModel<Project>, LanguageServerId, IoKind, String)>,
 28}
 29
 30struct ProjectState {
 31    servers: HashMap<LanguageServerId, LanguageServerState>,
 32    _subscriptions: [gpui::Subscription; 2],
 33}
 34
 35struct LanguageServerState {
 36    log_messages: VecDeque<String>,
 37    rpc_state: Option<LanguageServerRpcState>,
 38    _io_logs_subscription: Option<lsp::Subscription>,
 39    _lsp_logs_subscription: Option<lsp::Subscription>,
 40}
 41
 42struct LanguageServerRpcState {
 43    rpc_messages: VecDeque<String>,
 44    last_message_kind: Option<MessageKind>,
 45}
 46
 47pub struct LspLogView {
 48    pub(crate) editor: View<Editor>,
 49    editor_subscriptions: Vec<Subscription>,
 50    log_store: Model<LogStore>,
 51    current_server_id: Option<LanguageServerId>,
 52    is_showing_rpc_trace: bool,
 53    project: Model<Project>,
 54    focus_handle: FocusHandle,
 55    _log_store_subscriptions: Vec<Subscription>,
 56}
 57
 58pub struct LspLogToolbarItemView {
 59    log_view: Option<View<LspLogView>>,
 60    _log_view_subscription: Option<Subscription>,
 61}
 62
 63#[derive(Copy, Clone, PartialEq, Eq)]
 64enum MessageKind {
 65    Send,
 66    Receive,
 67}
 68
 69#[derive(Clone, Debug, PartialEq)]
 70pub(crate) struct LogMenuItem {
 71    pub server_id: LanguageServerId,
 72    pub server_name: LanguageServerName,
 73    pub worktree_root_name: String,
 74    pub rpc_trace_enabled: bool,
 75    pub rpc_trace_selected: bool,
 76    pub logs_selected: bool,
 77}
 78
 79actions!(debug, [OpenLanguageServerLogs]);
 80
 81pub fn init(cx: &mut AppContext) {
 82    let log_store = cx.new_model(|cx| LogStore::new(cx));
 83
 84    cx.observe_new_views(move |workspace: &mut Workspace, cx| {
 85        let project = workspace.project();
 86        if project.read(cx).is_local() {
 87            log_store.update(cx, |store, cx| {
 88                store.add_project(&project, cx);
 89            });
 90        }
 91
 92        let log_store = log_store.clone();
 93        workspace.register_action(move |workspace, _: &OpenLanguageServerLogs, cx| {
 94            let project = workspace.project().read(cx);
 95            if project.is_local() {
 96                workspace.add_item_to_active_pane(
 97                    Box::new(cx.new_view(|cx| {
 98                        LspLogView::new(workspace.project().clone(), log_store.clone(), cx)
 99                    })),
100                    cx,
101                );
102            }
103        });
104    })
105    .detach();
106}
107
108impl LogStore {
109    pub fn new(cx: &mut ModelContext<Self>) -> Self {
110        let (io_tx, mut io_rx) = mpsc::unbounded();
111        let this = Self {
112            projects: HashMap::default(),
113            io_tx,
114        };
115        cx.spawn(|this, mut cx| async move {
116            while let Some((project, server_id, io_kind, message)) = io_rx.next().await {
117                if let Some(this) = this.upgrade() {
118                    this.update(&mut cx, |this, cx| {
119                        this.on_io(project, server_id, io_kind, &message, cx);
120                    })?;
121                }
122            }
123            anyhow::Ok(())
124        })
125        .detach_and_log_err(cx);
126        this
127    }
128
129    pub fn add_project(&mut self, project: &Model<Project>, cx: &mut ModelContext<Self>) {
130        let weak_project = project.downgrade();
131        self.projects.insert(
132            project.downgrade(),
133            ProjectState {
134                servers: HashMap::default(),
135                _subscriptions: [
136                    cx.observe_release(project, move |this, _, _| {
137                        this.projects.remove(&weak_project);
138                    }),
139                    cx.subscribe(project, |this, project, event, cx| match event {
140                        project::Event::LanguageServerAdded(id) => {
141                            this.add_language_server(&project, *id, cx);
142                        }
143                        project::Event::LanguageServerRemoved(id) => {
144                            this.remove_language_server(&project, *id, cx);
145                        }
146                        project::Event::LanguageServerLog(id, message) => {
147                            this.add_language_server_log(&project, *id, message, cx);
148                        }
149                        _ => {}
150                    }),
151                ],
152            },
153        );
154    }
155
156    fn add_language_server(
157        &mut self,
158        project: &Model<Project>,
159        id: LanguageServerId,
160        cx: &mut ModelContext<Self>,
161    ) -> Option<&mut LanguageServerState> {
162        let project_state = self.projects.get_mut(&project.downgrade())?;
163        let server_state = project_state.servers.entry(id).or_insert_with(|| {
164            cx.notify();
165            LanguageServerState {
166                rpc_state: None,
167                log_messages: VecDeque::with_capacity(MAX_STORED_LOG_ENTRIES),
168                _io_logs_subscription: None,
169                _lsp_logs_subscription: None,
170            }
171        });
172
173        let server = project.read(cx).language_server_for_id(id);
174        if let Some(server) = server.as_deref() {
175            if server.has_notification_handler::<lsp::notification::LogMessage>() {
176                // Another event wants to re-add the server that was already added and subscribed to, avoid doing it again.
177                return Some(server_state);
178            }
179        }
180
181        let weak_project = project.downgrade();
182        let io_tx = self.io_tx.clone();
183        server_state._io_logs_subscription = server.as_ref().map(|server| {
184            server.on_io(move |io_kind, message| {
185                io_tx
186                    .unbounded_send((weak_project.clone(), id, io_kind, message.to_string()))
187                    .ok();
188            })
189        });
190        let this = cx.handle().downgrade();
191        let weak_project = project.downgrade();
192        server_state._lsp_logs_subscription = server.map(|server| {
193            let server_id = server.server_id();
194            server.on_notification::<lsp::notification::LogMessage, _>({
195                move |params, mut cx| {
196                    if let Some((project, this)) = weak_project.upgrade().zip(this.upgrade()) {
197                        this.update(&mut cx, |this, cx| {
198                            this.add_language_server_log(&project, server_id, &params.message, cx);
199                        })
200                        .ok();
201                    }
202                }
203            })
204        });
205        Some(server_state)
206    }
207
208    fn add_language_server_log(
209        &mut self,
210        project: &Model<Project>,
211        id: LanguageServerId,
212        message: &str,
213        cx: &mut ModelContext<Self>,
214    ) -> Option<()> {
215        let language_server_state = match self
216            .projects
217            .get_mut(&project.downgrade())?
218            .servers
219            .get_mut(&id)
220        {
221            Some(existing_state) => existing_state,
222            None => self.add_language_server(&project, id, cx)?,
223        };
224
225        let log_lines = &mut language_server_state.log_messages;
226        while log_lines.len() >= MAX_STORED_LOG_ENTRIES {
227            log_lines.pop_front();
228        }
229        let message = message.trim();
230        log_lines.push_back(message.to_string());
231        cx.emit(Event::NewServerLogEntry {
232            id,
233            entry: message.to_string(),
234            is_rpc: false,
235        });
236        cx.notify();
237        Some(())
238    }
239
240    fn remove_language_server(
241        &mut self,
242        project: &Model<Project>,
243        id: LanguageServerId,
244        cx: &mut ModelContext<Self>,
245    ) -> Option<()> {
246        let project_state = self.projects.get_mut(&project.downgrade())?;
247        project_state.servers.remove(&id);
248        cx.notify();
249        Some(())
250    }
251
252    fn server_logs(
253        &self,
254        project: &Model<Project>,
255        server_id: LanguageServerId,
256    ) -> Option<&VecDeque<String>> {
257        let weak_project = project.downgrade();
258        let project_state = self.projects.get(&weak_project)?;
259        let server_state = project_state.servers.get(&server_id)?;
260        Some(&server_state.log_messages)
261    }
262
263    fn enable_rpc_trace_for_language_server(
264        &mut self,
265        project: &Model<Project>,
266        server_id: LanguageServerId,
267    ) -> Option<&mut LanguageServerRpcState> {
268        let weak_project = project.downgrade();
269        let project_state = self.projects.get_mut(&weak_project)?;
270        let server_state = project_state.servers.get_mut(&server_id)?;
271        let rpc_state = server_state
272            .rpc_state
273            .get_or_insert_with(|| LanguageServerRpcState {
274                rpc_messages: VecDeque::with_capacity(MAX_STORED_LOG_ENTRIES),
275                last_message_kind: None,
276            });
277        Some(rpc_state)
278    }
279
280    pub fn disable_rpc_trace_for_language_server(
281        &mut self,
282        project: &Model<Project>,
283        server_id: LanguageServerId,
284        _: &mut ModelContext<Self>,
285    ) -> Option<()> {
286        let project = project.downgrade();
287        let project_state = self.projects.get_mut(&project)?;
288        let server_state = project_state.servers.get_mut(&server_id)?;
289        server_state.rpc_state.take();
290        Some(())
291    }
292
293    fn on_io(
294        &mut self,
295        project: WeakModel<Project>,
296        language_server_id: LanguageServerId,
297        io_kind: IoKind,
298        message: &str,
299        cx: &mut ModelContext<Self>,
300    ) -> Option<()> {
301        let is_received = match io_kind {
302            IoKind::StdOut => true,
303            IoKind::StdIn => false,
304            IoKind::StdErr => {
305                let project = project.upgrade()?;
306                let message = format!("stderr: {}", message.trim());
307                self.add_language_server_log(&project, language_server_id, &message, cx);
308                return Some(());
309            }
310        };
311
312        let state = self
313            .projects
314            .get_mut(&project)?
315            .servers
316            .get_mut(&language_server_id)?
317            .rpc_state
318            .as_mut()?;
319        let kind = if is_received {
320            MessageKind::Receive
321        } else {
322            MessageKind::Send
323        };
324
325        let rpc_log_lines = &mut state.rpc_messages;
326        if state.last_message_kind != Some(kind) {
327            let line_before_message = match kind {
328                MessageKind::Send => SEND_LINE,
329                MessageKind::Receive => RECEIVE_LINE,
330            };
331            rpc_log_lines.push_back(line_before_message.to_string());
332            cx.emit(Event::NewServerLogEntry {
333                id: language_server_id,
334                entry: line_before_message.to_string(),
335                is_rpc: true,
336            });
337        }
338
339        while rpc_log_lines.len() >= MAX_STORED_LOG_ENTRIES {
340            rpc_log_lines.pop_front();
341        }
342        let message = message.trim();
343        rpc_log_lines.push_back(message.to_string());
344        cx.emit(Event::NewServerLogEntry {
345            id: language_server_id,
346            entry: message.to_string(),
347            is_rpc: true,
348        });
349        cx.notify();
350        Some(())
351    }
352}
353
354impl LspLogView {
355    pub fn new(
356        project: Model<Project>,
357        log_store: Model<LogStore>,
358        cx: &mut ViewContext<Self>,
359    ) -> Self {
360        let server_id = log_store
361            .read(cx)
362            .projects
363            .get(&project.downgrade())
364            .and_then(|project| project.servers.keys().copied().next());
365        let model_changes_subscription = cx.observe(&log_store, |this, store, cx| {
366            maybe!({
367                let project_state = store.read(cx).projects.get(&this.project.downgrade())?;
368                if let Some(current_lsp) = this.current_server_id {
369                    if !project_state.servers.contains_key(&current_lsp) {
370                        if let Some(server) = project_state.servers.iter().next() {
371                            if this.is_showing_rpc_trace {
372                                this.show_rpc_trace_for_server(*server.0, cx)
373                            } else {
374                                this.show_logs_for_server(*server.0, cx)
375                            }
376                        } else {
377                            this.current_server_id = None;
378                            this.editor.update(cx, |editor, cx| {
379                                editor.set_read_only(false);
380                                editor.clear(cx);
381                                editor.set_read_only(true);
382                            });
383                            cx.notify();
384                        }
385                    }
386                } else {
387                    if let Some(server) = project_state.servers.iter().next() {
388                        if this.is_showing_rpc_trace {
389                            this.show_rpc_trace_for_server(*server.0, cx)
390                        } else {
391                            this.show_logs_for_server(*server.0, cx)
392                        }
393                    }
394                }
395
396                Some(())
397            });
398
399            cx.notify();
400        });
401        let events_subscriptions = cx.subscribe(&log_store, |log_view, _, e, cx| match e {
402            Event::NewServerLogEntry { id, entry, is_rpc } => {
403                if log_view.current_server_id == Some(*id) {
404                    if (*is_rpc && log_view.is_showing_rpc_trace)
405                        || (!*is_rpc && !log_view.is_showing_rpc_trace)
406                    {
407                        log_view.editor.update(cx, |editor, cx| {
408                            editor.set_read_only(false);
409                            let last_point = editor.buffer().read(cx).len(cx);
410                            editor.edit(
411                                vec![
412                                    (last_point..last_point, entry.trim()),
413                                    (last_point..last_point, "\n"),
414                                ],
415                                cx,
416                            );
417                            editor.set_read_only(true);
418                        });
419                    }
420                }
421            }
422        });
423        let (editor, editor_subscriptions) = Self::editor_for_logs(String::new(), cx);
424
425        let focus_handle = cx.focus_handle();
426        let focus_subscription = cx.on_focus(&focus_handle, |log_view, cx| {
427            cx.focus_view(&log_view.editor);
428        });
429
430        let mut this = Self {
431            focus_handle,
432            editor,
433            editor_subscriptions,
434            project,
435            log_store,
436            current_server_id: None,
437            is_showing_rpc_trace: false,
438            _log_store_subscriptions: vec![
439                model_changes_subscription,
440                events_subscriptions,
441                focus_subscription,
442            ],
443        };
444        if let Some(server_id) = server_id {
445            this.show_logs_for_server(server_id, cx);
446        }
447        this
448    }
449
450    fn editor_for_logs(
451        log_contents: String,
452        cx: &mut ViewContext<Self>,
453    ) -> (View<Editor>, Vec<Subscription>) {
454        let editor = cx.new_view(|cx| {
455            let mut editor = Editor::multi_line(cx);
456            editor.set_text(log_contents, cx);
457            editor.move_to_end(&MoveToEnd, cx);
458            editor.set_read_only(true);
459            editor.set_show_inline_completions(false);
460            editor
461        });
462        let editor_subscription = cx.subscribe(
463            &editor,
464            |_, _, event: &EditorEvent, cx: &mut ViewContext<'_, LspLogView>| {
465                cx.emit(event.clone())
466            },
467        );
468        let search_subscription = cx.subscribe(
469            &editor,
470            |_, _, event: &SearchEvent, cx: &mut ViewContext<'_, LspLogView>| {
471                cx.emit(event.clone())
472            },
473        );
474        (editor, vec![editor_subscription, search_subscription])
475    }
476
477    pub(crate) fn menu_items<'a>(&'a self, cx: &'a AppContext) -> Option<Vec<LogMenuItem>> {
478        let log_store = self.log_store.read(cx);
479        let state = log_store.projects.get(&self.project.downgrade())?;
480        let mut rows = self
481            .project
482            .read(cx)
483            .language_servers()
484            .filter_map(|(server_id, language_server_name, worktree_id)| {
485                let worktree = self.project.read(cx).worktree_for_id(worktree_id, cx)?;
486                let state = state.servers.get(&server_id)?;
487                Some(LogMenuItem {
488                    server_id,
489                    server_name: language_server_name,
490                    worktree_root_name: worktree.read(cx).root_name().to_string(),
491                    rpc_trace_enabled: state.rpc_state.is_some(),
492                    rpc_trace_selected: self.is_showing_rpc_trace
493                        && self.current_server_id == Some(server_id),
494                    logs_selected: !self.is_showing_rpc_trace
495                        && self.current_server_id == Some(server_id),
496                })
497            })
498            .chain(
499                self.project
500                    .read(cx)
501                    .supplementary_language_servers()
502                    .filter_map(|(&server_id, (name, _))| {
503                        let state = state.servers.get(&server_id)?;
504                        Some(LogMenuItem {
505                            server_id,
506                            server_name: name.clone(),
507                            worktree_root_name: "supplementary".to_string(),
508                            rpc_trace_enabled: state.rpc_state.is_some(),
509                            rpc_trace_selected: self.is_showing_rpc_trace
510                                && self.current_server_id == Some(server_id),
511                            logs_selected: !self.is_showing_rpc_trace
512                                && self.current_server_id == Some(server_id),
513                        })
514                    }),
515            )
516            .collect::<Vec<_>>();
517        rows.sort_by_key(|row| row.server_id);
518        rows.dedup_by_key(|row| row.server_id);
519        Some(rows)
520    }
521
522    fn show_logs_for_server(&mut self, server_id: LanguageServerId, cx: &mut ViewContext<Self>) {
523        let log_contents = self
524            .log_store
525            .read(cx)
526            .server_logs(&self.project, server_id)
527            .map(log_contents);
528        if let Some(log_contents) = log_contents {
529            self.current_server_id = Some(server_id);
530            self.is_showing_rpc_trace = false;
531            let (editor, editor_subscriptions) = Self::editor_for_logs(log_contents, cx);
532            self.editor = editor;
533            self.editor_subscriptions = editor_subscriptions;
534            cx.notify();
535        }
536        cx.focus(&self.focus_handle);
537    }
538
539    fn show_rpc_trace_for_server(
540        &mut self,
541        server_id: LanguageServerId,
542        cx: &mut ViewContext<Self>,
543    ) {
544        let rpc_log = self.log_store.update(cx, |log_store, _| {
545            log_store
546                .enable_rpc_trace_for_language_server(&self.project, server_id)
547                .map(|state| log_contents(&state.rpc_messages))
548        });
549        if let Some(rpc_log) = rpc_log {
550            self.current_server_id = Some(server_id);
551            self.is_showing_rpc_trace = true;
552            let (editor, editor_subscriptions) = Self::editor_for_logs(rpc_log, cx);
553            let language = self.project.read(cx).languages().language_for_name("JSON");
554            editor
555                .read(cx)
556                .buffer()
557                .read(cx)
558                .as_singleton()
559                .expect("log buffer should be a singleton")
560                .update(cx, |_, cx| {
561                    cx.spawn({
562                        let buffer = cx.handle();
563                        |_, mut cx| async move {
564                            let language = language.await.ok();
565                            buffer.update(&mut cx, |buffer, cx| {
566                                buffer.set_language(language, cx);
567                            })
568                        }
569                    })
570                    .detach_and_log_err(cx);
571                });
572
573            self.editor = editor;
574            self.editor_subscriptions = editor_subscriptions;
575            cx.notify();
576        }
577
578        cx.focus(&self.focus_handle);
579    }
580
581    fn toggle_rpc_trace_for_server(
582        &mut self,
583        server_id: LanguageServerId,
584        enabled: bool,
585        cx: &mut ViewContext<Self>,
586    ) {
587        self.log_store.update(cx, |log_store, cx| {
588            if enabled {
589                log_store.enable_rpc_trace_for_language_server(&self.project, server_id);
590            } else {
591                log_store.disable_rpc_trace_for_language_server(&self.project, server_id, cx);
592            }
593        });
594        if !enabled && Some(server_id) == self.current_server_id {
595            self.show_logs_for_server(server_id, cx);
596            cx.notify();
597        }
598    }
599}
600
601fn log_contents(lines: &VecDeque<String>) -> String {
602    let (a, b) = lines.as_slices();
603    let log_contents = a.join("\n");
604    if b.is_empty() {
605        log_contents
606    } else {
607        log_contents + "\n" + &b.join("\n")
608    }
609}
610
611impl Render for LspLogView {
612    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
613        self.editor
614            .update(cx, |editor, cx| editor.render(cx).into_any_element())
615    }
616}
617
618impl FocusableView for LspLogView {
619    fn focus_handle(&self, _: &AppContext) -> FocusHandle {
620        self.focus_handle.clone()
621    }
622}
623
624impl Item for LspLogView {
625    type Event = EditorEvent;
626
627    fn to_item_events(event: &Self::Event, f: impl FnMut(workspace::item::ItemEvent)) {
628        Editor::to_item_events(event, f)
629    }
630
631    fn tab_content(&self, params: TabContentParams, _: &WindowContext<'_>) -> AnyElement {
632        Label::new("LSP Logs")
633            .color(if params.selected {
634                Color::Default
635            } else {
636                Color::Muted
637            })
638            .into_any_element()
639    }
640
641    fn telemetry_event_text(&self) -> Option<&'static str> {
642        None
643    }
644
645    fn as_searchable(&self, handle: &View<Self>) -> Option<Box<dyn SearchableItemHandle>> {
646        Some(Box::new(handle.clone()))
647    }
648}
649
650impl SearchableItem for LspLogView {
651    type Match = <Editor as SearchableItem>::Match;
652
653    fn clear_matches(&mut self, cx: &mut ViewContext<Self>) {
654        self.editor.update(cx, |e, cx| e.clear_matches(cx))
655    }
656
657    fn update_matches(&mut self, matches: &[Self::Match], cx: &mut ViewContext<Self>) {
658        self.editor
659            .update(cx, |e, cx| e.update_matches(matches, cx))
660    }
661
662    fn query_suggestion(&mut self, cx: &mut ViewContext<Self>) -> String {
663        self.editor.update(cx, |e, cx| e.query_suggestion(cx))
664    }
665
666    fn activate_match(
667        &mut self,
668        index: usize,
669        matches: &[Self::Match],
670        cx: &mut ViewContext<Self>,
671    ) {
672        self.editor
673            .update(cx, |e, cx| e.activate_match(index, matches, cx))
674    }
675
676    fn select_matches(&mut self, matches: &[Self::Match], cx: &mut ViewContext<Self>) {
677        self.editor
678            .update(cx, |e, cx| e.select_matches(matches, cx))
679    }
680
681    fn find_matches(
682        &mut self,
683        query: Arc<project::search::SearchQuery>,
684        cx: &mut ViewContext<Self>,
685    ) -> gpui::Task<Vec<Self::Match>> {
686        self.editor.update(cx, |e, cx| e.find_matches(query, cx))
687    }
688
689    fn replace(&mut self, _: &Self::Match, _: &SearchQuery, _: &mut ViewContext<Self>) {
690        // Since LSP Log is read-only, it doesn't make sense to support replace operation.
691    }
692    fn supported_options() -> workspace::searchable::SearchOptions {
693        workspace::searchable::SearchOptions {
694            case: true,
695            word: true,
696            regex: true,
697            // LSP log is read-only.
698            replacement: false,
699        }
700    }
701    fn active_match_index(
702        &mut self,
703        matches: &[Self::Match],
704        cx: &mut ViewContext<Self>,
705    ) -> Option<usize> {
706        self.editor
707            .update(cx, |e, cx| e.active_match_index(matches, cx))
708    }
709}
710
711impl EventEmitter<ToolbarItemEvent> for LspLogToolbarItemView {}
712
713impl ToolbarItemView for LspLogToolbarItemView {
714    fn set_active_pane_item(
715        &mut self,
716        active_pane_item: Option<&dyn ItemHandle>,
717        cx: &mut ViewContext<Self>,
718    ) -> workspace::ToolbarItemLocation {
719        if let Some(item) = active_pane_item {
720            if let Some(log_view) = item.downcast::<LspLogView>() {
721                self.log_view = Some(log_view.clone());
722                self._log_view_subscription = Some(cx.observe(&log_view, |_, _, cx| {
723                    cx.notify();
724                }));
725                return ToolbarItemLocation::PrimaryLeft;
726            }
727        }
728        self.log_view = None;
729        self._log_view_subscription = None;
730        ToolbarItemLocation::Hidden
731    }
732}
733
734impl Render for LspLogToolbarItemView {
735    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
736        let Some(log_view) = self.log_view.clone() else {
737            return div();
738        };
739        let (menu_rows, current_server_id) = log_view.update(cx, |log_view, cx| {
740            let menu_rows = log_view.menu_items(cx).unwrap_or_default();
741            let current_server_id = log_view.current_server_id;
742            (menu_rows, current_server_id)
743        });
744
745        let current_server = current_server_id.and_then(|current_server_id| {
746            if let Ok(ix) = menu_rows.binary_search_by_key(&current_server_id, |e| e.server_id) {
747                Some(menu_rows[ix].clone())
748            } else {
749                None
750            }
751        });
752
753        let log_toolbar_view = cx.view().clone();
754        let lsp_menu = popover_menu("LspLogView")
755            .anchor(AnchorCorner::TopLeft)
756            .trigger(Button::new(
757                "language_server_menu_header",
758                current_server
759                    .map(|row| {
760                        Cow::Owned(format!(
761                            "{} ({}) - {}",
762                            row.server_name.0,
763                            row.worktree_root_name,
764                            if row.rpc_trace_selected {
765                                RPC_MESSAGES
766                            } else {
767                                SERVER_LOGS
768                            },
769                        ))
770                    })
771                    .unwrap_or_else(|| "No server selected".into()),
772            ))
773            .menu(move |cx| {
774                let menu_rows = menu_rows.clone();
775                let log_view = log_view.clone();
776                let log_toolbar_view = log_toolbar_view.clone();
777                ContextMenu::build(cx, move |mut menu, cx| {
778                    for (ix, row) in menu_rows.into_iter().enumerate() {
779                        let server_selected = Some(row.server_id) == current_server_id;
780                        menu = menu
781                            .header(format!(
782                                "{} ({})",
783                                row.server_name.0, row.worktree_root_name
784                            ))
785                            .entry(
786                                SERVER_LOGS,
787                                None,
788                                cx.handler_for(&log_view, move |view, cx| {
789                                    view.show_logs_for_server(row.server_id, cx);
790                                }),
791                            );
792                        if server_selected && row.logs_selected {
793                            let selected_ix = menu.select_last();
794                            debug_assert_eq!(
795                                Some(ix * 3 + 1),
796                                selected_ix,
797                                "Could not scroll to a just added LSP menu item"
798                            );
799                        }
800
801                        menu = menu.custom_entry(
802                            {
803                                let log_toolbar_view = log_toolbar_view.clone();
804                                move |cx| {
805                                    h_flex()
806                                        .w_full()
807                                        .justify_between()
808                                        .child(Label::new(RPC_MESSAGES))
809                                        .child(
810                                            div().child(
811                                                Checkbox::new(
812                                                    ix,
813                                                    if row.rpc_trace_enabled {
814                                                        Selection::Selected
815                                                    } else {
816                                                        Selection::Unselected
817                                                    },
818                                                )
819                                                .on_click(cx.listener_for(
820                                                    &log_toolbar_view,
821                                                    move |view, selection, cx| {
822                                                        let enabled = matches!(
823                                                            selection,
824                                                            Selection::Selected
825                                                        );
826                                                        view.toggle_rpc_logging_for_server(
827                                                            row.server_id,
828                                                            enabled,
829                                                            cx,
830                                                        );
831                                                        cx.stop_propagation();
832                                                    },
833                                                )),
834                                            ),
835                                        )
836                                        .into_any_element()
837                                }
838                            },
839                            cx.handler_for(&log_view, move |view, cx| {
840                                view.show_rpc_trace_for_server(row.server_id, cx);
841                            }),
842                        );
843                        if server_selected && row.rpc_trace_selected {
844                            let selected_ix = menu.select_last();
845                            debug_assert_eq!(
846                                Some(ix * 3 + 2),
847                                selected_ix,
848                                "Could not scroll to a just added LSP menu item"
849                            );
850                        }
851                    }
852                    menu
853                })
854                .into()
855            });
856
857        h_flex().size_full().child(lsp_menu).child(
858            div()
859                .child(
860                    Button::new("clear_log_button", "Clear").on_click(cx.listener(
861                        |this, _, cx| {
862                            if let Some(log_view) = this.log_view.as_ref() {
863                                log_view.update(cx, |log_view, cx| {
864                                    log_view.editor.update(cx, |editor, cx| {
865                                        editor.set_read_only(false);
866                                        editor.clear(cx);
867                                        editor.set_read_only(true);
868                                    });
869                                })
870                            }
871                        },
872                    )),
873                )
874                .ml_2(),
875        )
876    }
877}
878
879const RPC_MESSAGES: &str = "RPC Messages";
880const SERVER_LOGS: &str = "Server Logs";
881
882impl LspLogToolbarItemView {
883    pub fn new() -> Self {
884        Self {
885            log_view: None,
886            _log_view_subscription: None,
887        }
888    }
889
890    fn toggle_rpc_logging_for_server(
891        &mut self,
892        id: LanguageServerId,
893        enabled: bool,
894        cx: &mut ViewContext<Self>,
895    ) {
896        if let Some(log_view) = &self.log_view {
897            log_view.update(cx, |log_view, cx| {
898                log_view.toggle_rpc_trace_for_server(id, enabled, cx);
899                if !enabled && Some(id) == log_view.current_server_id {
900                    log_view.show_logs_for_server(id, cx);
901                    cx.notify();
902                } else if enabled {
903                    log_view.show_rpc_trace_for_server(id, cx);
904                    cx.notify();
905                }
906                cx.focus(&log_view.focus_handle);
907            });
908        }
909        cx.notify();
910    }
911}
912
913pub enum Event {
914    NewServerLogEntry {
915        id: LanguageServerId,
916        entry: String,
917        is_rpc: bool,
918    },
919}
920
921impl EventEmitter<Event> for LogStore {}
922impl EventEmitter<Event> for LspLogView {}
923impl EventEmitter<EditorEvent> for LspLogView {}
924impl EventEmitter<SearchEvent> for LspLogView {}