context_editor.rs

   1use anyhow::Result;
   2use assistant_settings::AssistantSettings;
   3use assistant_slash_command::{SlashCommand, SlashCommandOutputSection, SlashCommandWorkingSet};
   4use assistant_slash_commands::{
   5    DefaultSlashCommand, DocsSlashCommand, DocsSlashCommandArgs, FileSlashCommand,
   6    selections_creases,
   7};
   8use client::{proto, zed_urls};
   9use collections::{BTreeSet, HashMap, HashSet, hash_map};
  10use editor::{
  11    Anchor, Editor, EditorEvent, MenuInlineCompletionsPolicy, MultiBuffer, MultiBufferSnapshot,
  12    ProposedChangeLocation, ProposedChangesEditor, RowExt, ToOffset as _, ToPoint,
  13    actions::{MoveToEndOfLine, Newline, ShowCompletions},
  14    display_map::{
  15        BlockContext, BlockId, BlockPlacement, BlockProperties, BlockStyle, Crease, CreaseMetadata,
  16        CustomBlockId, FoldId, RenderBlock, ToDisplayPoint,
  17    },
  18    scroll::Autoscroll,
  19};
  20use editor::{FoldPlaceholder, display_map::CreaseId};
  21use feature_flags::{Assistant2FeatureFlag, FeatureFlagAppExt as _};
  22use fs::Fs;
  23use futures::FutureExt;
  24use gpui::{
  25    Animation, AnimationExt, AnyElement, AnyView, App, AsyncWindowContext, ClipboardEntry,
  26    ClipboardItem, CursorStyle, Empty, Entity, EventEmitter, FocusHandle, Focusable, FontWeight,
  27    Global, InteractiveElement, IntoElement, ParentElement, Pixels, Render, RenderImage,
  28    SharedString, Size, StatefulInteractiveElement, Styled, Subscription, Task, Transformation,
  29    WeakEntity, actions, div, img, impl_internal_actions, percentage, point, prelude::*,
  30    pulsating_between, size,
  31};
  32use indexed_docs::IndexedDocsStore;
  33use language::{
  34    BufferSnapshot, LspAdapterDelegate, ToOffset,
  35    language_settings::{SoftWrap, all_language_settings},
  36};
  37use language_model::{
  38    LanguageModelImage, LanguageModelProvider, LanguageModelProviderTosView, LanguageModelRegistry,
  39    Role,
  40};
  41use language_model_selector::{
  42    LanguageModelSelector, LanguageModelSelectorPopoverMenu, ModelType, ToggleModelSelector,
  43};
  44use multi_buffer::MultiBufferRow;
  45use picker::Picker;
  46use project::lsp_store::LocalLspAdapterDelegate;
  47use project::{Project, Worktree};
  48use rope::Point;
  49use serde::{Deserialize, Serialize};
  50use settings::{Settings, SettingsStore, update_settings_file};
  51use std::{any::TypeId, borrow::Cow, cmp, ops::Range, path::PathBuf, sync::Arc, time::Duration};
  52use text::SelectionGoal;
  53use ui::{
  54    ButtonLike, Disclosure, ElevationIndex, KeyBinding, PopoverMenuHandle, TintColor, Tooltip,
  55    prelude::*,
  56};
  57use util::{ResultExt, maybe};
  58use workspace::searchable::{Direction, SearchableItemHandle};
  59use workspace::{
  60    Save, Toast, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView, Workspace,
  61    item::{self, FollowableItem, Item, ItemHandle},
  62    notifications::NotificationId,
  63    pane::{self, SaveIntent},
  64    searchable::{SearchEvent, SearchableItem},
  65};
  66
  67use crate::{
  68    AssistantContext, AssistantPatch, AssistantPatchStatus, CacheStatus, Content, ContextEvent,
  69    ContextId, InvokedSlashCommandId, InvokedSlashCommandStatus, Message, MessageId,
  70    MessageMetadata, MessageStatus, ParsedSlashCommand, PendingSlashCommandStatus, RequestType,
  71};
  72use crate::{
  73    ThoughtProcessOutputSection, slash_command::SlashCommandCompletionProvider,
  74    slash_command_picker,
  75};
  76
  77actions!(
  78    assistant,
  79    [
  80        Assist,
  81        ConfirmCommand,
  82        CopyCode,
  83        CycleMessageRole,
  84        Edit,
  85        InsertIntoEditor,
  86        QuoteSelection,
  87        Split,
  88    ]
  89);
  90
  91#[derive(PartialEq, Clone)]
  92pub enum InsertDraggedFiles {
  93    ProjectPaths(Vec<PathBuf>),
  94    ExternalFiles(Vec<PathBuf>),
  95}
  96
  97impl_internal_actions!(assistant, [InsertDraggedFiles]);
  98
  99#[derive(Copy, Clone, Debug, PartialEq)]
 100struct ScrollPosition {
 101    offset_before_cursor: gpui::Point<f32>,
 102    cursor: Anchor,
 103}
 104
 105struct PatchViewState {
 106    crease_id: CreaseId,
 107    editor: Option<PatchEditorState>,
 108    update_task: Option<Task<()>>,
 109}
 110
 111struct PatchEditorState {
 112    editor: WeakEntity<ProposedChangesEditor>,
 113    opened_patch: AssistantPatch,
 114}
 115
 116type MessageHeader = MessageMetadata;
 117
 118#[derive(Clone)]
 119enum AssistError {
 120    FileRequired,
 121    PaymentRequired,
 122    MaxMonthlySpendReached,
 123    Message(SharedString),
 124}
 125
 126pub enum ThoughtProcessStatus {
 127    Pending,
 128    Completed,
 129}
 130
 131pub trait AssistantPanelDelegate {
 132    fn active_context_editor(
 133        &self,
 134        workspace: &mut Workspace,
 135        window: &mut Window,
 136        cx: &mut Context<Workspace>,
 137    ) -> Option<Entity<ContextEditor>>;
 138
 139    fn open_saved_context(
 140        &self,
 141        workspace: &mut Workspace,
 142        path: PathBuf,
 143        window: &mut Window,
 144        cx: &mut Context<Workspace>,
 145    ) -> Task<Result<()>>;
 146
 147    fn open_remote_context(
 148        &self,
 149        workspace: &mut Workspace,
 150        context_id: ContextId,
 151        window: &mut Window,
 152        cx: &mut Context<Workspace>,
 153    ) -> Task<Result<Entity<ContextEditor>>>;
 154
 155    fn quote_selection(
 156        &self,
 157        workspace: &mut Workspace,
 158        selection_ranges: Vec<Range<Anchor>>,
 159        buffer: Entity<MultiBuffer>,
 160        window: &mut Window,
 161        cx: &mut Context<Workspace>,
 162    );
 163}
 164
 165impl dyn AssistantPanelDelegate {
 166    /// Returns the global [`AssistantPanelDelegate`], if it exists.
 167    pub fn try_global(cx: &App) -> Option<Arc<Self>> {
 168        cx.try_global::<GlobalAssistantPanelDelegate>()
 169            .map(|global| global.0.clone())
 170    }
 171
 172    /// Sets the global [`AssistantPanelDelegate`].
 173    pub fn set_global(delegate: Arc<Self>, cx: &mut App) {
 174        cx.set_global(GlobalAssistantPanelDelegate(delegate));
 175    }
 176}
 177
 178struct GlobalAssistantPanelDelegate(Arc<dyn AssistantPanelDelegate>);
 179
 180impl Global for GlobalAssistantPanelDelegate {}
 181
 182pub struct ContextEditor {
 183    context: Entity<AssistantContext>,
 184    fs: Arc<dyn Fs>,
 185    slash_commands: Arc<SlashCommandWorkingSet>,
 186    workspace: WeakEntity<Workspace>,
 187    project: Entity<Project>,
 188    lsp_adapter_delegate: Option<Arc<dyn LspAdapterDelegate>>,
 189    editor: Entity<Editor>,
 190    pending_thought_process: Option<(CreaseId, language::Anchor)>,
 191    blocks: HashMap<MessageId, (MessageHeader, CustomBlockId)>,
 192    image_blocks: HashSet<CustomBlockId>,
 193    scroll_position: Option<ScrollPosition>,
 194    remote_id: Option<workspace::ViewId>,
 195    pending_slash_command_creases: HashMap<Range<language::Anchor>, CreaseId>,
 196    invoked_slash_command_creases: HashMap<InvokedSlashCommandId, CreaseId>,
 197    _subscriptions: Vec<Subscription>,
 198    patches: HashMap<Range<language::Anchor>, PatchViewState>,
 199    active_patch: Option<Range<language::Anchor>>,
 200    last_error: Option<AssistError>,
 201    show_accept_terms: bool,
 202    pub(crate) slash_menu_handle:
 203        PopoverMenuHandle<Picker<slash_command_picker::SlashCommandDelegate>>,
 204    // dragged_file_worktrees is used to keep references to worktrees that were added
 205    // when the user drag/dropped an external file onto the context editor. Since
 206    // the worktree is not part of the project panel, it would be dropped as soon as
 207    // the file is opened. In order to keep the worktree alive for the duration of the
 208    // context editor, we keep a reference here.
 209    dragged_file_worktrees: Vec<Entity<Worktree>>,
 210    language_model_selector: Entity<LanguageModelSelector>,
 211    language_model_selector_menu_handle: PopoverMenuHandle<LanguageModelSelector>,
 212}
 213
 214pub const DEFAULT_TAB_TITLE: &str = "New Chat";
 215const MAX_TAB_TITLE_LEN: usize = 16;
 216
 217impl ContextEditor {
 218    pub fn for_context(
 219        context: Entity<AssistantContext>,
 220        fs: Arc<dyn Fs>,
 221        workspace: WeakEntity<Workspace>,
 222        project: Entity<Project>,
 223        lsp_adapter_delegate: Option<Arc<dyn LspAdapterDelegate>>,
 224        window: &mut Window,
 225        cx: &mut Context<Self>,
 226    ) -> Self {
 227        let completion_provider = SlashCommandCompletionProvider::new(
 228            context.read(cx).slash_commands().clone(),
 229            Some(cx.entity().downgrade()),
 230            Some(workspace.clone()),
 231        );
 232
 233        let editor = cx.new(|cx| {
 234            let mut editor =
 235                Editor::for_buffer(context.read(cx).buffer().clone(), None, window, cx);
 236            editor.set_soft_wrap_mode(SoftWrap::EditorWidth, cx);
 237            editor.set_show_line_numbers(false, cx);
 238            editor.set_show_scrollbars(false, cx);
 239            editor.set_show_git_diff_gutter(false, cx);
 240            editor.set_show_code_actions(false, cx);
 241            editor.set_show_runnables(false, cx);
 242            editor.set_show_breakpoints(false, cx);
 243            editor.set_show_wrap_guides(false, cx);
 244            editor.set_show_indent_guides(false, cx);
 245            editor.set_completion_provider(Some(Box::new(completion_provider)));
 246            editor.set_menu_inline_completions_policy(MenuInlineCompletionsPolicy::Never);
 247            editor.set_collaboration_hub(Box::new(project.clone()));
 248
 249            let show_edit_predictions = all_language_settings(None, cx)
 250                .edit_predictions
 251                .enabled_in_assistant;
 252
 253            editor.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 254
 255            editor
 256        });
 257
 258        let _subscriptions = vec![
 259            cx.observe(&context, |_, _, cx| cx.notify()),
 260            cx.subscribe_in(&context, window, Self::handle_context_event),
 261            cx.subscribe_in(&editor, window, Self::handle_editor_event),
 262            cx.subscribe_in(&editor, window, Self::handle_editor_search_event),
 263            cx.observe_global_in::<SettingsStore>(window, Self::settings_changed),
 264        ];
 265
 266        let slash_command_sections = context.read(cx).slash_command_output_sections().to_vec();
 267        let thought_process_sections = context.read(cx).thought_process_output_sections().to_vec();
 268        let patch_ranges = context.read(cx).patch_ranges().collect::<Vec<_>>();
 269        let slash_commands = context.read(cx).slash_commands().clone();
 270        let mut this = Self {
 271            context,
 272            slash_commands,
 273            editor,
 274            lsp_adapter_delegate,
 275            blocks: Default::default(),
 276            image_blocks: Default::default(),
 277            scroll_position: None,
 278            remote_id: None,
 279            pending_thought_process: None,
 280            fs: fs.clone(),
 281            workspace,
 282            project,
 283            pending_slash_command_creases: HashMap::default(),
 284            invoked_slash_command_creases: HashMap::default(),
 285            _subscriptions,
 286            patches: HashMap::default(),
 287            active_patch: None,
 288            last_error: None,
 289            show_accept_terms: false,
 290            slash_menu_handle: Default::default(),
 291            dragged_file_worktrees: Vec::new(),
 292            language_model_selector: cx.new(|cx| {
 293                LanguageModelSelector::new(
 294                    move |model, cx| {
 295                        update_settings_file::<AssistantSettings>(
 296                            fs.clone(),
 297                            cx,
 298                            move |settings, _| settings.set_model(model.clone()),
 299                        );
 300                    },
 301                    ModelType::Default,
 302                    window,
 303                    cx,
 304                )
 305            }),
 306            language_model_selector_menu_handle: PopoverMenuHandle::default(),
 307        };
 308        this.update_message_headers(cx);
 309        this.update_image_blocks(cx);
 310        this.insert_slash_command_output_sections(slash_command_sections, false, window, cx);
 311        this.insert_thought_process_output_sections(
 312            thought_process_sections
 313                .into_iter()
 314                .map(|section| (section, ThoughtProcessStatus::Completed)),
 315            window,
 316            cx,
 317        );
 318        this.patches_updated(&Vec::new(), &patch_ranges, window, cx);
 319        this
 320    }
 321
 322    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 323        self.editor.update(cx, |editor, cx| {
 324            let show_edit_predictions = all_language_settings(None, cx)
 325                .edit_predictions
 326                .enabled_in_assistant;
 327
 328            editor.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 329        });
 330    }
 331
 332    pub fn context(&self) -> &Entity<AssistantContext> {
 333        &self.context
 334    }
 335
 336    pub fn editor(&self) -> &Entity<Editor> {
 337        &self.editor
 338    }
 339
 340    pub fn insert_default_prompt(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 341        let command_name = DefaultSlashCommand.name();
 342        self.editor.update(cx, |editor, cx| {
 343            editor.insert(&format!("/{command_name}\n\n"), window, cx)
 344        });
 345        let command = self.context.update(cx, |context, cx| {
 346            context.reparse(cx);
 347            context.parsed_slash_commands()[0].clone()
 348        });
 349        self.run_command(
 350            command.source_range,
 351            &command.name,
 352            &command.arguments,
 353            false,
 354            self.workspace.clone(),
 355            window,
 356            cx,
 357        );
 358    }
 359
 360    fn assist(&mut self, _: &Assist, window: &mut Window, cx: &mut Context<Self>) {
 361        self.send_to_model(RequestType::Chat, window, cx);
 362    }
 363
 364    fn edit(&mut self, _: &Edit, window: &mut Window, cx: &mut Context<Self>) {
 365        self.send_to_model(RequestType::SuggestEdits, window, cx);
 366    }
 367
 368    fn focus_active_patch(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 369        if let Some((_range, patch)) = self.active_patch() {
 370            if let Some(editor) = patch
 371                .editor
 372                .as_ref()
 373                .and_then(|state| state.editor.upgrade())
 374            {
 375                editor.focus_handle(cx).focus(window);
 376                return true;
 377            }
 378        }
 379
 380        false
 381    }
 382
 383    fn send_to_model(
 384        &mut self,
 385        request_type: RequestType,
 386        window: &mut Window,
 387        cx: &mut Context<Self>,
 388    ) {
 389        let provider = LanguageModelRegistry::read_global(cx)
 390            .default_model()
 391            .map(|default| default.provider);
 392        if provider
 393            .as_ref()
 394            .map_or(false, |provider| provider.must_accept_terms(cx))
 395        {
 396            self.show_accept_terms = true;
 397            cx.notify();
 398            return;
 399        }
 400
 401        if self.focus_active_patch(window, cx) {
 402            return;
 403        }
 404
 405        self.last_error = None;
 406
 407        if request_type == RequestType::SuggestEdits && !self.context.read(cx).contains_files(cx) {
 408            self.last_error = Some(AssistError::FileRequired);
 409            cx.notify();
 410        } else if let Some(user_message) = self
 411            .context
 412            .update(cx, |context, cx| context.assist(request_type, cx))
 413        {
 414            let new_selection = {
 415                let cursor = user_message
 416                    .start
 417                    .to_offset(self.context.read(cx).buffer().read(cx));
 418                cursor..cursor
 419            };
 420            self.editor.update(cx, |editor, cx| {
 421                editor.change_selections(Some(Autoscroll::fit()), window, cx, |selections| {
 422                    selections.select_ranges([new_selection])
 423                });
 424            });
 425            // Avoid scrolling to the new cursor position so the assistant's output is stable.
 426            cx.defer_in(window, |this, _, _| this.scroll_position = None);
 427        }
 428
 429        cx.notify();
 430    }
 431
 432    fn cancel(
 433        &mut self,
 434        _: &editor::actions::Cancel,
 435        _window: &mut Window,
 436        cx: &mut Context<Self>,
 437    ) {
 438        self.last_error = None;
 439
 440        if self
 441            .context
 442            .update(cx, |context, cx| context.cancel_last_assist(cx))
 443        {
 444            return;
 445        }
 446
 447        cx.propagate();
 448    }
 449
 450    fn cycle_message_role(
 451        &mut self,
 452        _: &CycleMessageRole,
 453        _window: &mut Window,
 454        cx: &mut Context<Self>,
 455    ) {
 456        let cursors = self.cursors(cx);
 457        self.context.update(cx, |context, cx| {
 458            let messages = context
 459                .messages_for_offsets(cursors, cx)
 460                .into_iter()
 461                .map(|message| message.id)
 462                .collect();
 463            context.cycle_message_roles(messages, cx)
 464        });
 465    }
 466
 467    fn cursors(&self, cx: &mut App) -> Vec<usize> {
 468        let selections = self
 469            .editor
 470            .update(cx, |editor, cx| editor.selections.all::<usize>(cx));
 471        selections
 472            .into_iter()
 473            .map(|selection| selection.head())
 474            .collect()
 475    }
 476
 477    pub fn insert_command(&mut self, name: &str, window: &mut Window, cx: &mut Context<Self>) {
 478        if let Some(command) = self.slash_commands.command(name, cx) {
 479            self.editor.update(cx, |editor, cx| {
 480                editor.transact(window, cx, |editor, window, cx| {
 481                    editor
 482                        .change_selections(Some(Autoscroll::fit()), window, cx, |s| s.try_cancel());
 483                    let snapshot = editor.buffer().read(cx).snapshot(cx);
 484                    let newest_cursor = editor.selections.newest::<Point>(cx).head();
 485                    if newest_cursor.column > 0
 486                        || snapshot
 487                            .chars_at(newest_cursor)
 488                            .next()
 489                            .map_or(false, |ch| ch != '\n')
 490                    {
 491                        editor.move_to_end_of_line(
 492                            &MoveToEndOfLine {
 493                                stop_at_soft_wraps: false,
 494                            },
 495                            window,
 496                            cx,
 497                        );
 498                        editor.newline(&Newline, window, cx);
 499                    }
 500
 501                    editor.insert(&format!("/{name}"), window, cx);
 502                    if command.accepts_arguments() {
 503                        editor.insert(" ", window, cx);
 504                        editor.show_completions(&ShowCompletions::default(), window, cx);
 505                    }
 506                });
 507            });
 508            if !command.requires_argument() {
 509                self.confirm_command(&ConfirmCommand, window, cx);
 510            }
 511        }
 512    }
 513
 514    pub fn confirm_command(
 515        &mut self,
 516        _: &ConfirmCommand,
 517        window: &mut Window,
 518        cx: &mut Context<Self>,
 519    ) {
 520        if self.editor.read(cx).has_visible_completions_menu() {
 521            return;
 522        }
 523
 524        let selections = self.editor.read(cx).selections.disjoint_anchors();
 525        let mut commands_by_range = HashMap::default();
 526        let workspace = self.workspace.clone();
 527        self.context.update(cx, |context, cx| {
 528            context.reparse(cx);
 529            for selection in selections.iter() {
 530                if let Some(command) =
 531                    context.pending_command_for_position(selection.head().text_anchor, cx)
 532                {
 533                    commands_by_range
 534                        .entry(command.source_range.clone())
 535                        .or_insert_with(|| command.clone());
 536                }
 537            }
 538        });
 539
 540        if commands_by_range.is_empty() {
 541            cx.propagate();
 542        } else {
 543            for command in commands_by_range.into_values() {
 544                self.run_command(
 545                    command.source_range,
 546                    &command.name,
 547                    &command.arguments,
 548                    true,
 549                    workspace.clone(),
 550                    window,
 551                    cx,
 552                );
 553            }
 554            cx.stop_propagation();
 555        }
 556    }
 557
 558    pub fn run_command(
 559        &mut self,
 560        command_range: Range<language::Anchor>,
 561        name: &str,
 562        arguments: &[String],
 563        ensure_trailing_newline: bool,
 564        workspace: WeakEntity<Workspace>,
 565        window: &mut Window,
 566        cx: &mut Context<Self>,
 567    ) {
 568        if let Some(command) = self.slash_commands.command(name, cx) {
 569            let context = self.context.read(cx);
 570            let sections = context
 571                .slash_command_output_sections()
 572                .into_iter()
 573                .filter(|section| section.is_valid(context.buffer().read(cx)))
 574                .cloned()
 575                .collect::<Vec<_>>();
 576            let snapshot = context.buffer().read(cx).snapshot();
 577            let output = command.run(
 578                arguments,
 579                &sections,
 580                snapshot,
 581                workspace,
 582                self.lsp_adapter_delegate.clone(),
 583                window,
 584                cx,
 585            );
 586            self.context.update(cx, |context, cx| {
 587                context.insert_command_output(
 588                    command_range,
 589                    name,
 590                    output,
 591                    ensure_trailing_newline,
 592                    cx,
 593                )
 594            });
 595        }
 596    }
 597
 598    fn handle_context_event(
 599        &mut self,
 600        _: &Entity<AssistantContext>,
 601        event: &ContextEvent,
 602        window: &mut Window,
 603        cx: &mut Context<Self>,
 604    ) {
 605        let context_editor = cx.entity().downgrade();
 606
 607        match event {
 608            ContextEvent::MessagesEdited => {
 609                self.update_message_headers(cx);
 610                self.update_image_blocks(cx);
 611                self.context.update(cx, |context, cx| {
 612                    context.save(Some(Duration::from_millis(500)), self.fs.clone(), cx);
 613                });
 614            }
 615            ContextEvent::SummaryChanged => {
 616                cx.emit(EditorEvent::TitleChanged);
 617                self.context.update(cx, |context, cx| {
 618                    context.save(Some(Duration::from_millis(500)), self.fs.clone(), cx);
 619                });
 620            }
 621            ContextEvent::StartedThoughtProcess(range) => {
 622                let creases = self.insert_thought_process_output_sections(
 623                    [(
 624                        ThoughtProcessOutputSection {
 625                            range: range.clone(),
 626                        },
 627                        ThoughtProcessStatus::Pending,
 628                    )],
 629                    window,
 630                    cx,
 631                );
 632                self.pending_thought_process = Some((creases[0], range.start));
 633            }
 634            ContextEvent::EndedThoughtProcess(end) => {
 635                if let Some((crease_id, start)) = self.pending_thought_process.take() {
 636                    self.editor.update(cx, |editor, cx| {
 637                        let multi_buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
 638                        let (excerpt_id, _, _) = multi_buffer_snapshot.as_singleton().unwrap();
 639                        let start_anchor = multi_buffer_snapshot
 640                            .anchor_in_excerpt(*excerpt_id, start)
 641                            .unwrap();
 642
 643                        editor.display_map.update(cx, |display_map, cx| {
 644                            display_map.unfold_intersecting(
 645                                vec![start_anchor..start_anchor],
 646                                true,
 647                                cx,
 648                            );
 649                        });
 650                        editor.remove_creases(vec![crease_id], cx);
 651                    });
 652                    self.insert_thought_process_output_sections(
 653                        [(
 654                            ThoughtProcessOutputSection { range: start..*end },
 655                            ThoughtProcessStatus::Completed,
 656                        )],
 657                        window,
 658                        cx,
 659                    );
 660                }
 661            }
 662            ContextEvent::StreamedCompletion => {
 663                self.editor.update(cx, |editor, cx| {
 664                    if let Some(scroll_position) = self.scroll_position {
 665                        let snapshot = editor.snapshot(window, cx);
 666                        let cursor_point = scroll_position.cursor.to_display_point(&snapshot);
 667                        let scroll_top =
 668                            cursor_point.row().as_f32() - scroll_position.offset_before_cursor.y;
 669                        editor.set_scroll_position(
 670                            point(scroll_position.offset_before_cursor.x, scroll_top),
 671                            window,
 672                            cx,
 673                        );
 674                    }
 675                });
 676            }
 677            ContextEvent::PatchesUpdated { removed, updated } => {
 678                self.patches_updated(removed, updated, window, cx);
 679            }
 680            ContextEvent::ParsedSlashCommandsUpdated { removed, updated } => {
 681                self.editor.update(cx, |editor, cx| {
 682                    let buffer = editor.buffer().read(cx).snapshot(cx);
 683                    let (&excerpt_id, _, _) = buffer.as_singleton().unwrap();
 684
 685                    editor.remove_creases(
 686                        removed
 687                            .iter()
 688                            .filter_map(|range| self.pending_slash_command_creases.remove(range)),
 689                        cx,
 690                    );
 691
 692                    let crease_ids = editor.insert_creases(
 693                        updated.iter().map(|command| {
 694                            let workspace = self.workspace.clone();
 695                            let confirm_command = Arc::new({
 696                                let context_editor = context_editor.clone();
 697                                let command = command.clone();
 698                                move |window: &mut Window, cx: &mut App| {
 699                                    context_editor
 700                                        .update(cx, |context_editor, cx| {
 701                                            context_editor.run_command(
 702                                                command.source_range.clone(),
 703                                                &command.name,
 704                                                &command.arguments,
 705                                                false,
 706                                                workspace.clone(),
 707                                                window,
 708                                                cx,
 709                                            );
 710                                        })
 711                                        .ok();
 712                                }
 713                            });
 714                            let placeholder = FoldPlaceholder {
 715                                render: Arc::new(move |_, _, _| Empty.into_any()),
 716                                ..Default::default()
 717                            };
 718                            let render_toggle = {
 719                                let confirm_command = confirm_command.clone();
 720                                let command = command.clone();
 721                                move |row, _, _, _window: &mut Window, _cx: &mut App| {
 722                                    render_pending_slash_command_gutter_decoration(
 723                                        row,
 724                                        &command.status,
 725                                        confirm_command.clone(),
 726                                    )
 727                                }
 728                            };
 729                            let render_trailer = {
 730                                let command = command.clone();
 731                                move |row, _unfold, _window: &mut Window, cx: &mut App| {
 732                                    // TODO: In the future we should investigate how we can expose
 733                                    // this as a hook on the `SlashCommand` trait so that we don't
 734                                    // need to special-case it here.
 735                                    if command.name == DocsSlashCommand::NAME {
 736                                        return render_docs_slash_command_trailer(
 737                                            row,
 738                                            command.clone(),
 739                                            cx,
 740                                        );
 741                                    }
 742
 743                                    Empty.into_any()
 744                                }
 745                            };
 746
 747                            let start = buffer
 748                                .anchor_in_excerpt(excerpt_id, command.source_range.start)
 749                                .unwrap();
 750                            let end = buffer
 751                                .anchor_in_excerpt(excerpt_id, command.source_range.end)
 752                                .unwrap();
 753                            Crease::inline(start..end, placeholder, render_toggle, render_trailer)
 754                        }),
 755                        cx,
 756                    );
 757
 758                    self.pending_slash_command_creases.extend(
 759                        updated
 760                            .iter()
 761                            .map(|command| command.source_range.clone())
 762                            .zip(crease_ids),
 763                    );
 764                })
 765            }
 766            ContextEvent::InvokedSlashCommandChanged { command_id } => {
 767                self.update_invoked_slash_command(*command_id, window, cx);
 768            }
 769            ContextEvent::SlashCommandOutputSectionAdded { section } => {
 770                self.insert_slash_command_output_sections([section.clone()], false, window, cx);
 771            }
 772            ContextEvent::Operation(_) => {}
 773            ContextEvent::ShowAssistError(error_message) => {
 774                self.last_error = Some(AssistError::Message(error_message.clone()));
 775            }
 776            ContextEvent::ShowPaymentRequiredError => {
 777                self.last_error = Some(AssistError::PaymentRequired);
 778            }
 779            ContextEvent::ShowMaxMonthlySpendReachedError => {
 780                self.last_error = Some(AssistError::MaxMonthlySpendReached);
 781            }
 782        }
 783    }
 784
 785    fn update_invoked_slash_command(
 786        &mut self,
 787        command_id: InvokedSlashCommandId,
 788        window: &mut Window,
 789        cx: &mut Context<Self>,
 790    ) {
 791        if let Some(invoked_slash_command) =
 792            self.context.read(cx).invoked_slash_command(&command_id)
 793        {
 794            if let InvokedSlashCommandStatus::Finished = invoked_slash_command.status {
 795                let run_commands_in_ranges = invoked_slash_command
 796                    .run_commands_in_ranges
 797                    .iter()
 798                    .cloned()
 799                    .collect::<Vec<_>>();
 800                for range in run_commands_in_ranges {
 801                    let commands = self.context.update(cx, |context, cx| {
 802                        context.reparse(cx);
 803                        context
 804                            .pending_commands_for_range(range.clone(), cx)
 805                            .to_vec()
 806                    });
 807
 808                    for command in commands {
 809                        self.run_command(
 810                            command.source_range,
 811                            &command.name,
 812                            &command.arguments,
 813                            false,
 814                            self.workspace.clone(),
 815                            window,
 816                            cx,
 817                        );
 818                    }
 819                }
 820            }
 821        }
 822
 823        self.editor.update(cx, |editor, cx| {
 824            if let Some(invoked_slash_command) =
 825                self.context.read(cx).invoked_slash_command(&command_id)
 826            {
 827                if let InvokedSlashCommandStatus::Finished = invoked_slash_command.status {
 828                    let buffer = editor.buffer().read(cx).snapshot(cx);
 829                    let (&excerpt_id, _buffer_id, _buffer_snapshot) =
 830                        buffer.as_singleton().unwrap();
 831
 832                    let start = buffer
 833                        .anchor_in_excerpt(excerpt_id, invoked_slash_command.range.start)
 834                        .unwrap();
 835                    let end = buffer
 836                        .anchor_in_excerpt(excerpt_id, invoked_slash_command.range.end)
 837                        .unwrap();
 838                    editor.remove_folds_with_type(
 839                        &[start..end],
 840                        TypeId::of::<PendingSlashCommand>(),
 841                        false,
 842                        cx,
 843                    );
 844
 845                    editor.remove_creases(
 846                        HashSet::from_iter(self.invoked_slash_command_creases.remove(&command_id)),
 847                        cx,
 848                    );
 849                } else if let hash_map::Entry::Vacant(entry) =
 850                    self.invoked_slash_command_creases.entry(command_id)
 851                {
 852                    let buffer = editor.buffer().read(cx).snapshot(cx);
 853                    let (&excerpt_id, _buffer_id, _buffer_snapshot) =
 854                        buffer.as_singleton().unwrap();
 855                    let context = self.context.downgrade();
 856                    let crease_start = buffer
 857                        .anchor_in_excerpt(excerpt_id, invoked_slash_command.range.start)
 858                        .unwrap();
 859                    let crease_end = buffer
 860                        .anchor_in_excerpt(excerpt_id, invoked_slash_command.range.end)
 861                        .unwrap();
 862                    let crease = Crease::inline(
 863                        crease_start..crease_end,
 864                        invoked_slash_command_fold_placeholder(command_id, context),
 865                        fold_toggle("invoked-slash-command"),
 866                        |_row, _folded, _window, _cx| Empty.into_any(),
 867                    );
 868                    let crease_ids = editor.insert_creases([crease.clone()], cx);
 869                    editor.fold_creases(vec![crease], false, window, cx);
 870                    entry.insert(crease_ids[0]);
 871                } else {
 872                    cx.notify()
 873                }
 874            } else {
 875                editor.remove_creases(
 876                    HashSet::from_iter(self.invoked_slash_command_creases.remove(&command_id)),
 877                    cx,
 878                );
 879                cx.notify();
 880            };
 881        });
 882    }
 883
 884    fn patches_updated(
 885        &mut self,
 886        removed: &Vec<Range<text::Anchor>>,
 887        updated: &Vec<Range<text::Anchor>>,
 888        window: &mut Window,
 889        cx: &mut Context<ContextEditor>,
 890    ) {
 891        let this = cx.entity().downgrade();
 892        let mut editors_to_close = Vec::new();
 893
 894        self.editor.update(cx, |editor, cx| {
 895            let snapshot = editor.snapshot(window, cx);
 896            let multibuffer = &snapshot.buffer_snapshot;
 897            let (&excerpt_id, _, _) = multibuffer.as_singleton().unwrap();
 898
 899            let mut removed_crease_ids = Vec::new();
 900            let mut ranges_to_unfold: Vec<Range<Anchor>> = Vec::new();
 901            for range in removed {
 902                if let Some(state) = self.patches.remove(range) {
 903                    let patch_start = multibuffer
 904                        .anchor_in_excerpt(excerpt_id, range.start)
 905                        .unwrap();
 906                    let patch_end = multibuffer
 907                        .anchor_in_excerpt(excerpt_id, range.end)
 908                        .unwrap();
 909
 910                    editors_to_close.extend(state.editor.and_then(|state| state.editor.upgrade()));
 911                    ranges_to_unfold.push(patch_start..patch_end);
 912                    removed_crease_ids.push(state.crease_id);
 913                }
 914            }
 915            editor.unfold_ranges(&ranges_to_unfold, true, false, cx);
 916            editor.remove_creases(removed_crease_ids, cx);
 917
 918            for range in updated {
 919                let Some(patch) = self.context.read(cx).patch_for_range(&range, cx).cloned() else {
 920                    continue;
 921                };
 922
 923                let path_count = patch.path_count();
 924                let patch_start = multibuffer
 925                    .anchor_in_excerpt(excerpt_id, patch.range.start)
 926                    .unwrap();
 927                let patch_end = multibuffer
 928                    .anchor_in_excerpt(excerpt_id, patch.range.end)
 929                    .unwrap();
 930                let render_block: RenderBlock = Arc::new({
 931                    let this = this.clone();
 932                    let patch_range = range.clone();
 933                    move |cx: &mut BlockContext| {
 934                        let max_width = cx.max_width;
 935                        let gutter_width = cx.gutter_dimensions.full_width();
 936                        let block_id = cx.block_id;
 937                        let selected = cx.selected;
 938                        let window = &mut cx.window;
 939                        this.update(cx.app, |this, cx| {
 940                            this.render_patch_block(
 941                                patch_range.clone(),
 942                                max_width,
 943                                gutter_width,
 944                                block_id,
 945                                selected,
 946                                window,
 947                                cx,
 948                            )
 949                        })
 950                        .ok()
 951                        .flatten()
 952                        .unwrap_or_else(|| Empty.into_any())
 953                    }
 954                });
 955
 956                let height = path_count as u32 + 1;
 957                let crease = Crease::block(
 958                    patch_start..patch_end,
 959                    height,
 960                    BlockStyle::Flex,
 961                    render_block.clone(),
 962                );
 963
 964                let should_refold;
 965                if let Some(state) = self.patches.get_mut(&range) {
 966                    if let Some(editor_state) = &state.editor {
 967                        if editor_state.opened_patch != patch {
 968                            state.update_task = Some({
 969                                let this = this.clone();
 970                                cx.spawn_in(window, async move |_, cx| {
 971                                    Self::update_patch_editor(this.clone(), patch, cx)
 972                                        .await
 973                                        .log_err();
 974                                })
 975                            });
 976                        }
 977                    }
 978
 979                    should_refold =
 980                        snapshot.intersects_fold(patch_start.to_offset(&snapshot.buffer_snapshot));
 981                } else {
 982                    let crease_id = editor.insert_creases([crease.clone()], cx)[0];
 983                    self.patches.insert(
 984                        range.clone(),
 985                        PatchViewState {
 986                            crease_id,
 987                            editor: None,
 988                            update_task: None,
 989                        },
 990                    );
 991
 992                    should_refold = true;
 993                }
 994
 995                if should_refold {
 996                    editor.unfold_ranges(&[patch_start..patch_end], true, false, cx);
 997                    editor.fold_creases(vec![crease], false, window, cx);
 998                }
 999            }
1000        });
1001
1002        for editor in editors_to_close {
1003            self.close_patch_editor(editor, window, cx);
1004        }
1005
1006        self.update_active_patch(window, cx);
1007    }
1008
1009    fn insert_thought_process_output_sections(
1010        &mut self,
1011        sections: impl IntoIterator<
1012            Item = (
1013                ThoughtProcessOutputSection<language::Anchor>,
1014                ThoughtProcessStatus,
1015            ),
1016        >,
1017        window: &mut Window,
1018        cx: &mut Context<Self>,
1019    ) -> Vec<CreaseId> {
1020        self.editor.update(cx, |editor, cx| {
1021            let buffer = editor.buffer().read(cx).snapshot(cx);
1022            let excerpt_id = *buffer.as_singleton().unwrap().0;
1023            let mut buffer_rows_to_fold = BTreeSet::new();
1024            let mut creases = Vec::new();
1025            for (section, status) in sections {
1026                let start = buffer
1027                    .anchor_in_excerpt(excerpt_id, section.range.start)
1028                    .unwrap();
1029                let end = buffer
1030                    .anchor_in_excerpt(excerpt_id, section.range.end)
1031                    .unwrap();
1032                let buffer_row = MultiBufferRow(start.to_point(&buffer).row);
1033                buffer_rows_to_fold.insert(buffer_row);
1034                creases.push(
1035                    Crease::inline(
1036                        start..end,
1037                        FoldPlaceholder {
1038                            render: render_thought_process_fold_icon_button(
1039                                cx.entity().downgrade(),
1040                                status,
1041                            ),
1042                            merge_adjacent: false,
1043                            ..Default::default()
1044                        },
1045                        render_slash_command_output_toggle,
1046                        |_, _, _, _| Empty.into_any_element(),
1047                    )
1048                    .with_metadata(CreaseMetadata {
1049                        icon: IconName::Ai,
1050                        label: "Thinking Process".into(),
1051                    }),
1052                );
1053            }
1054
1055            let creases = editor.insert_creases(creases, cx);
1056
1057            for buffer_row in buffer_rows_to_fold.into_iter().rev() {
1058                editor.fold_at(buffer_row, window, cx);
1059            }
1060
1061            creases
1062        })
1063    }
1064
1065    fn insert_slash_command_output_sections(
1066        &mut self,
1067        sections: impl IntoIterator<Item = SlashCommandOutputSection<language::Anchor>>,
1068        expand_result: bool,
1069        window: &mut Window,
1070        cx: &mut Context<Self>,
1071    ) {
1072        self.editor.update(cx, |editor, cx| {
1073            let buffer = editor.buffer().read(cx).snapshot(cx);
1074            let excerpt_id = *buffer.as_singleton().unwrap().0;
1075            let mut buffer_rows_to_fold = BTreeSet::new();
1076            let mut creases = Vec::new();
1077            for section in sections {
1078                let start = buffer
1079                    .anchor_in_excerpt(excerpt_id, section.range.start)
1080                    .unwrap();
1081                let end = buffer
1082                    .anchor_in_excerpt(excerpt_id, section.range.end)
1083                    .unwrap();
1084                let buffer_row = MultiBufferRow(start.to_point(&buffer).row);
1085                buffer_rows_to_fold.insert(buffer_row);
1086                creases.push(
1087                    Crease::inline(
1088                        start..end,
1089                        FoldPlaceholder {
1090                            render: render_fold_icon_button(
1091                                cx.entity().downgrade(),
1092                                section.icon,
1093                                section.label.clone(),
1094                            ),
1095                            merge_adjacent: false,
1096                            ..Default::default()
1097                        },
1098                        render_slash_command_output_toggle,
1099                        |_, _, _, _| Empty.into_any_element(),
1100                    )
1101                    .with_metadata(CreaseMetadata {
1102                        icon: section.icon,
1103                        label: section.label,
1104                    }),
1105                );
1106            }
1107
1108            editor.insert_creases(creases, cx);
1109
1110            if expand_result {
1111                buffer_rows_to_fold.clear();
1112            }
1113            for buffer_row in buffer_rows_to_fold.into_iter().rev() {
1114                editor.fold_at(buffer_row, window, cx);
1115            }
1116        });
1117    }
1118
1119    fn handle_editor_event(
1120        &mut self,
1121        _: &Entity<Editor>,
1122        event: &EditorEvent,
1123        window: &mut Window,
1124        cx: &mut Context<Self>,
1125    ) {
1126        match event {
1127            EditorEvent::ScrollPositionChanged { autoscroll, .. } => {
1128                let cursor_scroll_position = self.cursor_scroll_position(window, cx);
1129                if *autoscroll {
1130                    self.scroll_position = cursor_scroll_position;
1131                } else if self.scroll_position != cursor_scroll_position {
1132                    self.scroll_position = None;
1133                }
1134            }
1135            EditorEvent::SelectionsChanged { .. } => {
1136                self.scroll_position = self.cursor_scroll_position(window, cx);
1137                self.update_active_patch(window, cx);
1138            }
1139            _ => {}
1140        }
1141        cx.emit(event.clone());
1142    }
1143
1144    fn active_patch(&self) -> Option<(Range<text::Anchor>, &PatchViewState)> {
1145        let patch = self.active_patch.as_ref()?;
1146        Some((patch.clone(), self.patches.get(&patch)?))
1147    }
1148
1149    fn update_active_patch(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1150        let newest_cursor = self.editor.update(cx, |editor, cx| {
1151            editor.selections.newest::<Point>(cx).head()
1152        });
1153        let context = self.context.read(cx);
1154
1155        let new_patch = context.patch_containing(newest_cursor, cx).cloned();
1156
1157        if new_patch.as_ref().map(|p| &p.range) == self.active_patch.as_ref() {
1158            return;
1159        }
1160
1161        if let Some(old_patch_range) = self.active_patch.take() {
1162            if let Some(patch_state) = self.patches.get_mut(&old_patch_range) {
1163                if let Some(state) = patch_state.editor.take() {
1164                    if let Some(editor) = state.editor.upgrade() {
1165                        self.close_patch_editor(editor, window, cx);
1166                    }
1167                }
1168            }
1169        }
1170
1171        if let Some(new_patch) = new_patch {
1172            self.active_patch = Some(new_patch.range.clone());
1173
1174            if let Some(patch_state) = self.patches.get_mut(&new_patch.range) {
1175                let mut editor = None;
1176                if let Some(state) = &patch_state.editor {
1177                    if let Some(opened_editor) = state.editor.upgrade() {
1178                        editor = Some(opened_editor);
1179                    }
1180                }
1181
1182                if let Some(editor) = editor {
1183                    self.workspace
1184                        .update(cx, |workspace, cx| {
1185                            workspace.activate_item(&editor, true, false, window, cx);
1186                        })
1187                        .ok();
1188                } else {
1189                    patch_state.update_task = Some(cx.spawn_in(window, async move |this, cx| {
1190                        Self::open_patch_editor(this, new_patch, cx).await.log_err();
1191                    }));
1192                }
1193            }
1194        }
1195    }
1196
1197    fn close_patch_editor(
1198        &mut self,
1199        editor: Entity<ProposedChangesEditor>,
1200        window: &mut Window,
1201        cx: &mut Context<ContextEditor>,
1202    ) {
1203        self.workspace
1204            .update(cx, |workspace, cx| {
1205                if let Some(pane) = workspace.pane_for(&editor) {
1206                    pane.update(cx, |pane, cx| {
1207                        let item_id = editor.entity_id();
1208                        if !editor.read(cx).focus_handle(cx).is_focused(window) {
1209                            pane.close_item_by_id(item_id, SaveIntent::Skip, window, cx)
1210                                .detach_and_log_err(cx);
1211                        }
1212                    });
1213                }
1214            })
1215            .ok();
1216    }
1217
1218    async fn open_patch_editor(
1219        this: WeakEntity<Self>,
1220        patch: AssistantPatch,
1221        cx: &mut AsyncWindowContext,
1222    ) -> Result<()> {
1223        let project = this.read_with(cx, |this, _| this.project.clone())?;
1224        let resolved_patch = patch.resolve(project.clone(), cx).await;
1225
1226        let editor = cx.new_window_entity(|window, cx| {
1227            let editor = ProposedChangesEditor::new(
1228                patch.title.clone(),
1229                resolved_patch
1230                    .edit_groups
1231                    .iter()
1232                    .map(|(buffer, groups)| ProposedChangeLocation {
1233                        buffer: buffer.clone(),
1234                        ranges: groups
1235                            .iter()
1236                            .map(|group| group.context_range.clone())
1237                            .collect(),
1238                    })
1239                    .collect(),
1240                Some(project.clone()),
1241                window,
1242                cx,
1243            );
1244            resolved_patch.apply(&editor, cx);
1245            editor
1246        })?;
1247
1248        this.update(cx, |this, _| {
1249            if let Some(patch_state) = this.patches.get_mut(&patch.range) {
1250                patch_state.editor = Some(PatchEditorState {
1251                    editor: editor.downgrade(),
1252                    opened_patch: patch,
1253                });
1254                patch_state.update_task.take();
1255            }
1256        })?;
1257        this.read_with(cx, |this, _| this.workspace.clone())?
1258            .update_in(cx, |workspace, window, cx| {
1259                workspace.add_item_to_active_pane(Box::new(editor.clone()), None, false, window, cx)
1260            })
1261            .log_err();
1262
1263        Ok(())
1264    }
1265
1266    async fn update_patch_editor(
1267        this: WeakEntity<Self>,
1268        patch: AssistantPatch,
1269        cx: &mut AsyncWindowContext,
1270    ) -> Result<()> {
1271        let project = this.update(cx, |this, _| this.project.clone())?;
1272        let resolved_patch = patch.resolve(project.clone(), cx).await;
1273        this.update_in(cx, |this, window, cx| {
1274            let patch_state = this.patches.get_mut(&patch.range)?;
1275
1276            let locations = resolved_patch
1277                .edit_groups
1278                .iter()
1279                .map(|(buffer, groups)| ProposedChangeLocation {
1280                    buffer: buffer.clone(),
1281                    ranges: groups
1282                        .iter()
1283                        .map(|group| group.context_range.clone())
1284                        .collect(),
1285                })
1286                .collect();
1287
1288            if let Some(state) = &mut patch_state.editor {
1289                if let Some(editor) = state.editor.upgrade() {
1290                    editor.update(cx, |editor, cx| {
1291                        editor.set_title(patch.title.clone(), cx);
1292                        editor.reset_locations(locations, window, cx);
1293                        resolved_patch.apply(editor, cx);
1294                    });
1295
1296                    state.opened_patch = patch;
1297                } else {
1298                    patch_state.editor.take();
1299                }
1300            }
1301            patch_state.update_task.take();
1302
1303            Some(())
1304        })?;
1305        Ok(())
1306    }
1307
1308    fn handle_editor_search_event(
1309        &mut self,
1310        _: &Entity<Editor>,
1311        event: &SearchEvent,
1312        _window: &mut Window,
1313        cx: &mut Context<Self>,
1314    ) {
1315        cx.emit(event.clone());
1316    }
1317
1318    fn cursor_scroll_position(
1319        &self,
1320        window: &mut Window,
1321        cx: &mut Context<Self>,
1322    ) -> Option<ScrollPosition> {
1323        self.editor.update(cx, |editor, cx| {
1324            let snapshot = editor.snapshot(window, cx);
1325            let cursor = editor.selections.newest_anchor().head();
1326            let cursor_row = cursor
1327                .to_display_point(&snapshot.display_snapshot)
1328                .row()
1329                .as_f32();
1330            let scroll_position = editor
1331                .scroll_manager
1332                .anchor()
1333                .scroll_position(&snapshot.display_snapshot);
1334
1335            let scroll_bottom = scroll_position.y + editor.visible_line_count().unwrap_or(0.);
1336            if (scroll_position.y..scroll_bottom).contains(&cursor_row) {
1337                Some(ScrollPosition {
1338                    cursor,
1339                    offset_before_cursor: point(scroll_position.x, cursor_row - scroll_position.y),
1340                })
1341            } else {
1342                None
1343            }
1344        })
1345    }
1346
1347    fn esc_kbd(cx: &App) -> Div {
1348        let colors = cx.theme().colors().clone();
1349
1350        h_flex()
1351            .items_center()
1352            .gap_1()
1353            .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
1354            .text_size(TextSize::XSmall.rems(cx))
1355            .text_color(colors.text_muted)
1356            .child("Press")
1357            .child(
1358                h_flex()
1359                    .rounded_sm()
1360                    .px_1()
1361                    .mr_0p5()
1362                    .border_1()
1363                    .border_color(colors.border_variant.alpha(0.6))
1364                    .bg(colors.element_background.alpha(0.6))
1365                    .child("esc"),
1366            )
1367            .child("to cancel")
1368    }
1369
1370    fn update_message_headers(&mut self, cx: &mut Context<Self>) {
1371        self.editor.update(cx, |editor, cx| {
1372            let buffer = editor.buffer().read(cx).snapshot(cx);
1373
1374            let excerpt_id = *buffer.as_singleton().unwrap().0;
1375            let mut old_blocks = std::mem::take(&mut self.blocks);
1376            let mut blocks_to_remove: HashMap<_, _> = old_blocks
1377                .iter()
1378                .map(|(message_id, (_, block_id))| (*message_id, *block_id))
1379                .collect();
1380            let mut blocks_to_replace: HashMap<_, RenderBlock> = Default::default();
1381
1382            let render_block = |message: MessageMetadata| -> RenderBlock {
1383                Arc::new({
1384                    let context = self.context.clone();
1385
1386                    move |cx| {
1387                        let message_id = MessageId(message.timestamp);
1388                        let llm_loading = message.role == Role::Assistant
1389                            && message.status == MessageStatus::Pending;
1390
1391                        let (label, spinner, note) = match message.role {
1392                            Role::User => (
1393                                Label::new("You").color(Color::Default).into_any_element(),
1394                                None,
1395                                None,
1396                            ),
1397                            Role::Assistant => {
1398                                let base_label = Label::new("Assistant").color(Color::Info);
1399                                let mut spinner = None;
1400                                let mut note = None;
1401                                let animated_label = if llm_loading {
1402                                    base_label
1403                                        .with_animation(
1404                                            "pulsating-label",
1405                                            Animation::new(Duration::from_secs(2))
1406                                                .repeat()
1407                                                .with_easing(pulsating_between(0.4, 0.8)),
1408                                            |label, delta| label.alpha(delta),
1409                                        )
1410                                        .into_any_element()
1411                                } else {
1412                                    base_label.into_any_element()
1413                                };
1414                                if llm_loading {
1415                                    spinner = Some(
1416                                        Icon::new(IconName::ArrowCircle)
1417                                            .size(IconSize::XSmall)
1418                                            .color(Color::Info)
1419                                            .with_animation(
1420                                                "arrow-circle",
1421                                                Animation::new(Duration::from_secs(2)).repeat(),
1422                                                |icon, delta| {
1423                                                    icon.transform(Transformation::rotate(
1424                                                        percentage(delta),
1425                                                    ))
1426                                                },
1427                                            )
1428                                            .into_any_element(),
1429                                    );
1430                                    note = Some(Self::esc_kbd(cx).into_any_element());
1431                                }
1432                                (animated_label, spinner, note)
1433                            }
1434                            Role::System => (
1435                                Label::new("System")
1436                                    .color(Color::Warning)
1437                                    .into_any_element(),
1438                                None,
1439                                None,
1440                            ),
1441                        };
1442
1443                        let sender = h_flex()
1444                            .items_center()
1445                            .gap_2p5()
1446                            .child(
1447                                ButtonLike::new("role")
1448                                    .style(ButtonStyle::Filled)
1449                                    .child(
1450                                        h_flex()
1451                                            .items_center()
1452                                            .gap_1p5()
1453                                            .child(label)
1454                                            .children(spinner),
1455                                    )
1456                                    .tooltip(|window, cx| {
1457                                        Tooltip::with_meta(
1458                                            "Toggle message role",
1459                                            None,
1460                                            "Available roles: You (User), Assistant, System",
1461                                            window,
1462                                            cx,
1463                                        )
1464                                    })
1465                                    .on_click({
1466                                        let context = context.clone();
1467                                        move |_, _window, cx| {
1468                                            context.update(cx, |context, cx| {
1469                                                context.cycle_message_roles(
1470                                                    HashSet::from_iter(Some(message_id)),
1471                                                    cx,
1472                                                )
1473                                            })
1474                                        }
1475                                    }),
1476                            )
1477                            .children(note);
1478
1479                        h_flex()
1480                            .id(("message_header", message_id.as_u64()))
1481                            .pl(cx.gutter_dimensions.full_width())
1482                            .h_11()
1483                            .w_full()
1484                            .relative()
1485                            .gap_1p5()
1486                            .child(sender)
1487                            .children(match &message.cache {
1488                                Some(cache) if cache.is_final_anchor => match cache.status {
1489                                    CacheStatus::Cached => Some(
1490                                        div()
1491                                            .id("cached")
1492                                            .child(
1493                                                Icon::new(IconName::DatabaseZap)
1494                                                    .size(IconSize::XSmall)
1495                                                    .color(Color::Hint),
1496                                            )
1497                                            .tooltip(|window, cx| {
1498                                                Tooltip::with_meta(
1499                                                    "Context Cached",
1500                                                    None,
1501                                                    "Large messages cached to optimize performance",
1502                                                    window,
1503                                                    cx,
1504                                                )
1505                                            })
1506                                            .into_any_element(),
1507                                    ),
1508                                    CacheStatus::Pending => Some(
1509                                        div()
1510                                            .child(
1511                                                Icon::new(IconName::Ellipsis)
1512                                                    .size(IconSize::XSmall)
1513                                                    .color(Color::Hint),
1514                                            )
1515                                            .into_any_element(),
1516                                    ),
1517                                },
1518                                _ => None,
1519                            })
1520                            .children(match &message.status {
1521                                MessageStatus::Error(error) => Some(
1522                                    Button::new("show-error", "Error")
1523                                        .color(Color::Error)
1524                                        .selected_label_color(Color::Error)
1525                                        .selected_icon_color(Color::Error)
1526                                        .icon(IconName::XCircle)
1527                                        .icon_color(Color::Error)
1528                                        .icon_size(IconSize::XSmall)
1529                                        .icon_position(IconPosition::Start)
1530                                        .tooltip(Tooltip::text("View Details"))
1531                                        .on_click({
1532                                            let context = context.clone();
1533                                            let error = error.clone();
1534                                            move |_, _window, cx| {
1535                                                context.update(cx, |_, cx| {
1536                                                    cx.emit(ContextEvent::ShowAssistError(
1537                                                        error.clone(),
1538                                                    ));
1539                                                });
1540                                            }
1541                                        })
1542                                        .into_any_element(),
1543                                ),
1544                                MessageStatus::Canceled => Some(
1545                                    h_flex()
1546                                        .gap_1()
1547                                        .items_center()
1548                                        .child(
1549                                            Icon::new(IconName::XCircle)
1550                                                .color(Color::Disabled)
1551                                                .size(IconSize::XSmall),
1552                                        )
1553                                        .child(
1554                                            Label::new("Canceled")
1555                                                .size(LabelSize::Small)
1556                                                .color(Color::Disabled),
1557                                        )
1558                                        .into_any_element(),
1559                                ),
1560                                _ => None,
1561                            })
1562                            .into_any_element()
1563                    }
1564                })
1565            };
1566            let create_block_properties = |message: &Message| BlockProperties {
1567                height: Some(2),
1568                style: BlockStyle::Sticky,
1569                placement: BlockPlacement::Above(
1570                    buffer
1571                        .anchor_in_excerpt(excerpt_id, message.anchor_range.start)
1572                        .unwrap(),
1573                ),
1574                priority: usize::MAX,
1575                render: render_block(MessageMetadata::from(message)),
1576            };
1577            let mut new_blocks = vec![];
1578            let mut block_index_to_message = vec![];
1579            for message in self.context.read(cx).messages(cx) {
1580                if let Some(_) = blocks_to_remove.remove(&message.id) {
1581                    // This is an old message that we might modify.
1582                    let Some((meta, block_id)) = old_blocks.get_mut(&message.id) else {
1583                        debug_assert!(
1584                            false,
1585                            "old_blocks should contain a message_id we've just removed."
1586                        );
1587                        continue;
1588                    };
1589                    // Should we modify it?
1590                    let message_meta = MessageMetadata::from(&message);
1591                    if meta != &message_meta {
1592                        blocks_to_replace.insert(*block_id, render_block(message_meta.clone()));
1593                        *meta = message_meta;
1594                    }
1595                } else {
1596                    // This is a new message.
1597                    new_blocks.push(create_block_properties(&message));
1598                    block_index_to_message.push((message.id, MessageMetadata::from(&message)));
1599                }
1600            }
1601            editor.replace_blocks(blocks_to_replace, None, cx);
1602            editor.remove_blocks(blocks_to_remove.into_values().collect(), None, cx);
1603
1604            let ids = editor.insert_blocks(new_blocks, None, cx);
1605            old_blocks.extend(ids.into_iter().zip(block_index_to_message).map(
1606                |(block_id, (message_id, message_meta))| (message_id, (message_meta, block_id)),
1607            ));
1608            self.blocks = old_blocks;
1609        });
1610    }
1611
1612    /// Returns either the selected text, or the content of the Markdown code
1613    /// block surrounding the cursor.
1614    fn get_selection_or_code_block(
1615        context_editor_view: &Entity<ContextEditor>,
1616        cx: &mut Context<Workspace>,
1617    ) -> Option<(String, bool)> {
1618        const CODE_FENCE_DELIMITER: &'static str = "```";
1619
1620        let context_editor = context_editor_view.read(cx).editor.clone();
1621        context_editor.update(cx, |context_editor, cx| {
1622            if context_editor.selections.newest::<Point>(cx).is_empty() {
1623                let snapshot = context_editor.buffer().read(cx).snapshot(cx);
1624                let (_, _, snapshot) = snapshot.as_singleton()?;
1625
1626                let head = context_editor.selections.newest::<Point>(cx).head();
1627                let offset = snapshot.point_to_offset(head);
1628
1629                let surrounding_code_block_range = find_surrounding_code_block(snapshot, offset)?;
1630                let mut text = snapshot
1631                    .text_for_range(surrounding_code_block_range)
1632                    .collect::<String>();
1633
1634                // If there is no newline trailing the closing three-backticks, then
1635                // tree-sitter-md extends the range of the content node to include
1636                // the backticks.
1637                if text.ends_with(CODE_FENCE_DELIMITER) {
1638                    text.drain((text.len() - CODE_FENCE_DELIMITER.len())..);
1639                }
1640
1641                (!text.is_empty()).then_some((text, true))
1642            } else {
1643                let selection = context_editor.selections.newest_adjusted(cx);
1644                let buffer = context_editor.buffer().read(cx).snapshot(cx);
1645                let selected_text = buffer.text_for_range(selection.range()).collect::<String>();
1646
1647                (!selected_text.is_empty()).then_some((selected_text, false))
1648            }
1649        })
1650    }
1651
1652    pub fn insert_selection(
1653        workspace: &mut Workspace,
1654        _: &InsertIntoEditor,
1655        window: &mut Window,
1656        cx: &mut Context<Workspace>,
1657    ) {
1658        let Some(assistant_panel_delegate) = <dyn AssistantPanelDelegate>::try_global(cx) else {
1659            return;
1660        };
1661        let Some(context_editor_view) =
1662            assistant_panel_delegate.active_context_editor(workspace, window, cx)
1663        else {
1664            return;
1665        };
1666        let Some(active_editor_view) = workspace
1667            .active_item(cx)
1668            .and_then(|item| item.act_as::<Editor>(cx))
1669        else {
1670            return;
1671        };
1672
1673        if let Some((text, _)) = Self::get_selection_or_code_block(&context_editor_view, cx) {
1674            active_editor_view.update(cx, |editor, cx| {
1675                editor.insert(&text, window, cx);
1676                editor.focus_handle(cx).focus(window);
1677            })
1678        }
1679    }
1680
1681    pub fn copy_code(
1682        workspace: &mut Workspace,
1683        _: &CopyCode,
1684        window: &mut Window,
1685        cx: &mut Context<Workspace>,
1686    ) {
1687        let result = maybe!({
1688            let assistant_panel_delegate = <dyn AssistantPanelDelegate>::try_global(cx)?;
1689            let context_editor_view =
1690                assistant_panel_delegate.active_context_editor(workspace, window, cx)?;
1691            Self::get_selection_or_code_block(&context_editor_view, cx)
1692        });
1693        let Some((text, is_code_block)) = result else {
1694            return;
1695        };
1696
1697        cx.write_to_clipboard(ClipboardItem::new_string(text));
1698
1699        struct CopyToClipboardToast;
1700        workspace.show_toast(
1701            Toast::new(
1702                NotificationId::unique::<CopyToClipboardToast>(),
1703                format!(
1704                    "{} copied to clipboard.",
1705                    if is_code_block {
1706                        "Code block"
1707                    } else {
1708                        "Selection"
1709                    }
1710                ),
1711            )
1712            .autohide(),
1713            cx,
1714        );
1715    }
1716
1717    pub fn insert_dragged_files(
1718        workspace: &mut Workspace,
1719        action: &InsertDraggedFiles,
1720        window: &mut Window,
1721        cx: &mut Context<Workspace>,
1722    ) {
1723        let Some(assistant_panel_delegate) = <dyn AssistantPanelDelegate>::try_global(cx) else {
1724            return;
1725        };
1726        let Some(context_editor_view) =
1727            assistant_panel_delegate.active_context_editor(workspace, window, cx)
1728        else {
1729            return;
1730        };
1731
1732        let project = workspace.project().clone();
1733
1734        let paths = match action {
1735            InsertDraggedFiles::ProjectPaths(paths) => Task::ready((paths.clone(), vec![])),
1736            InsertDraggedFiles::ExternalFiles(paths) => {
1737                let tasks = paths
1738                    .clone()
1739                    .into_iter()
1740                    .map(|path| Workspace::project_path_for_path(project.clone(), &path, false, cx))
1741                    .collect::<Vec<_>>();
1742
1743                cx.spawn(async move |_, cx| {
1744                    let mut paths = vec![];
1745                    let mut worktrees = vec![];
1746
1747                    let opened_paths = futures::future::join_all(tasks).await;
1748                    for (worktree, project_path) in opened_paths.into_iter().flatten() {
1749                        let Ok(worktree_root_name) =
1750                            worktree.read_with(cx, |worktree, _| worktree.root_name().to_string())
1751                        else {
1752                            continue;
1753                        };
1754
1755                        let mut full_path = PathBuf::from(worktree_root_name.clone());
1756                        full_path.push(&project_path.path);
1757                        paths.push(full_path);
1758                        worktrees.push(worktree);
1759                    }
1760
1761                    (paths, worktrees)
1762                })
1763            }
1764        };
1765
1766        window
1767            .spawn(cx, async move |cx| {
1768                let (paths, dragged_file_worktrees) = paths.await;
1769                let cmd_name = FileSlashCommand.name();
1770
1771                context_editor_view
1772                    .update_in(cx, |context_editor, window, cx| {
1773                        let file_argument = paths
1774                            .into_iter()
1775                            .map(|path| path.to_string_lossy().to_string())
1776                            .collect::<Vec<_>>()
1777                            .join(" ");
1778
1779                        context_editor.editor.update(cx, |editor, cx| {
1780                            editor.insert("\n", window, cx);
1781                            editor.insert(&format!("/{} {}", cmd_name, file_argument), window, cx);
1782                        });
1783
1784                        context_editor.confirm_command(&ConfirmCommand, window, cx);
1785
1786                        context_editor
1787                            .dragged_file_worktrees
1788                            .extend(dragged_file_worktrees);
1789                    })
1790                    .log_err();
1791            })
1792            .detach();
1793    }
1794
1795    pub fn quote_selection(
1796        workspace: &mut Workspace,
1797        _: &QuoteSelection,
1798        window: &mut Window,
1799        cx: &mut Context<Workspace>,
1800    ) {
1801        let Some(assistant_panel_delegate) = <dyn AssistantPanelDelegate>::try_global(cx) else {
1802            return;
1803        };
1804
1805        let Some((selections, buffer)) = maybe!({
1806            let editor = workspace
1807                .active_item(cx)
1808                .and_then(|item| item.act_as::<Editor>(cx))?;
1809
1810            let buffer = editor.read(cx).buffer().clone();
1811            let snapshot = buffer.read(cx).snapshot(cx);
1812            let selections = editor.update(cx, |editor, cx| {
1813                editor
1814                    .selections
1815                    .all_adjusted(cx)
1816                    .into_iter()
1817                    .filter_map(|s| {
1818                        (!s.is_empty())
1819                            .then(|| snapshot.anchor_after(s.start)..snapshot.anchor_before(s.end))
1820                    })
1821                    .collect::<Vec<_>>()
1822            });
1823            Some((selections, buffer))
1824        }) else {
1825            return;
1826        };
1827
1828        if selections.is_empty() {
1829            return;
1830        }
1831
1832        assistant_panel_delegate.quote_selection(workspace, selections, buffer, window, cx);
1833    }
1834
1835    pub fn quote_ranges(
1836        &mut self,
1837        ranges: Vec<Range<Point>>,
1838        snapshot: MultiBufferSnapshot,
1839        window: &mut Window,
1840        cx: &mut Context<Self>,
1841    ) {
1842        let creases = selections_creases(ranges, snapshot, cx);
1843
1844        self.editor.update(cx, |editor, cx| {
1845            editor.insert("\n", window, cx);
1846            for (text, crease_title) in creases {
1847                let point = editor.selections.newest::<Point>(cx).head();
1848                let start_row = MultiBufferRow(point.row);
1849
1850                editor.insert(&text, window, cx);
1851
1852                let snapshot = editor.buffer().read(cx).snapshot(cx);
1853                let anchor_before = snapshot.anchor_after(point);
1854                let anchor_after = editor
1855                    .selections
1856                    .newest_anchor()
1857                    .head()
1858                    .bias_left(&snapshot);
1859
1860                editor.insert("\n", window, cx);
1861
1862                let fold_placeholder =
1863                    quote_selection_fold_placeholder(crease_title, cx.entity().downgrade());
1864                let crease = Crease::inline(
1865                    anchor_before..anchor_after,
1866                    fold_placeholder,
1867                    render_quote_selection_output_toggle,
1868                    |_, _, _, _| Empty.into_any(),
1869                );
1870                editor.insert_creases(vec![crease], cx);
1871                editor.fold_at(start_row, window, cx);
1872            }
1873        })
1874    }
1875
1876    fn copy(&mut self, _: &editor::actions::Copy, _window: &mut Window, cx: &mut Context<Self>) {
1877        if self.editor.read(cx).selections.count() == 1 {
1878            let (copied_text, metadata, _) = self.get_clipboard_contents(cx);
1879            cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
1880                copied_text,
1881                metadata,
1882            ));
1883            cx.stop_propagation();
1884            return;
1885        }
1886
1887        cx.propagate();
1888    }
1889
1890    fn cut(&mut self, _: &editor::actions::Cut, window: &mut Window, cx: &mut Context<Self>) {
1891        if self.editor.read(cx).selections.count() == 1 {
1892            let (copied_text, metadata, selections) = self.get_clipboard_contents(cx);
1893
1894            self.editor.update(cx, |editor, cx| {
1895                editor.transact(window, cx, |this, window, cx| {
1896                    this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
1897                        s.select(selections);
1898                    });
1899                    this.insert("", window, cx);
1900                    cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
1901                        copied_text,
1902                        metadata,
1903                    ));
1904                });
1905            });
1906
1907            cx.stop_propagation();
1908            return;
1909        }
1910
1911        cx.propagate();
1912    }
1913
1914    fn get_clipboard_contents(
1915        &mut self,
1916        cx: &mut Context<Self>,
1917    ) -> (String, CopyMetadata, Vec<text::Selection<usize>>) {
1918        let (selection, creases) = self.editor.update(cx, |editor, cx| {
1919            let mut selection = editor.selections.newest_adjusted(cx);
1920            let snapshot = editor.buffer().read(cx).snapshot(cx);
1921
1922            selection.goal = SelectionGoal::None;
1923
1924            let selection_start = snapshot.point_to_offset(selection.start);
1925
1926            (
1927                selection.map(|point| snapshot.point_to_offset(point)),
1928                editor.display_map.update(cx, |display_map, cx| {
1929                    display_map
1930                        .snapshot(cx)
1931                        .crease_snapshot
1932                        .creases_in_range(
1933                            MultiBufferRow(selection.start.row)
1934                                ..MultiBufferRow(selection.end.row + 1),
1935                            &snapshot,
1936                        )
1937                        .filter_map(|crease| {
1938                            if let Crease::Inline {
1939                                range, metadata, ..
1940                            } = &crease
1941                            {
1942                                let metadata = metadata.as_ref()?;
1943                                let start = range
1944                                    .start
1945                                    .to_offset(&snapshot)
1946                                    .saturating_sub(selection_start);
1947                                let end = range
1948                                    .end
1949                                    .to_offset(&snapshot)
1950                                    .saturating_sub(selection_start);
1951
1952                                let range_relative_to_selection = start..end;
1953                                if !range_relative_to_selection.is_empty() {
1954                                    return Some(SelectedCreaseMetadata {
1955                                        range_relative_to_selection,
1956                                        crease: metadata.clone(),
1957                                    });
1958                                }
1959                            }
1960                            None
1961                        })
1962                        .collect::<Vec<_>>()
1963                }),
1964            )
1965        });
1966
1967        let context = self.context.read(cx);
1968
1969        let mut text = String::new();
1970        for message in context.messages(cx) {
1971            if message.offset_range.start >= selection.range().end {
1972                break;
1973            } else if message.offset_range.end >= selection.range().start {
1974                let range = cmp::max(message.offset_range.start, selection.range().start)
1975                    ..cmp::min(message.offset_range.end, selection.range().end);
1976                if !range.is_empty() {
1977                    for chunk in context.buffer().read(cx).text_for_range(range) {
1978                        text.push_str(chunk);
1979                    }
1980                    if message.offset_range.end < selection.range().end {
1981                        text.push('\n');
1982                    }
1983                }
1984            }
1985        }
1986
1987        (text, CopyMetadata { creases }, vec![selection])
1988    }
1989
1990    fn paste(
1991        &mut self,
1992        action: &editor::actions::Paste,
1993        window: &mut Window,
1994        cx: &mut Context<Self>,
1995    ) {
1996        cx.stop_propagation();
1997
1998        let images = if let Some(item) = cx.read_from_clipboard() {
1999            item.into_entries()
2000                .filter_map(|entry| {
2001                    if let ClipboardEntry::Image(image) = entry {
2002                        Some(image)
2003                    } else {
2004                        None
2005                    }
2006                })
2007                .collect()
2008        } else {
2009            Vec::new()
2010        };
2011
2012        let metadata = if let Some(item) = cx.read_from_clipboard() {
2013            item.entries().first().and_then(|entry| {
2014                if let ClipboardEntry::String(text) = entry {
2015                    text.metadata_json::<CopyMetadata>()
2016                } else {
2017                    None
2018                }
2019            })
2020        } else {
2021            None
2022        };
2023
2024        if images.is_empty() {
2025            self.editor.update(cx, |editor, cx| {
2026                let paste_position = editor.selections.newest::<usize>(cx).head();
2027                editor.paste(action, window, cx);
2028
2029                if let Some(metadata) = metadata {
2030                    let buffer = editor.buffer().read(cx).snapshot(cx);
2031
2032                    let mut buffer_rows_to_fold = BTreeSet::new();
2033                    let weak_editor = cx.entity().downgrade();
2034                    editor.insert_creases(
2035                        metadata.creases.into_iter().map(|metadata| {
2036                            let start = buffer.anchor_after(
2037                                paste_position + metadata.range_relative_to_selection.start,
2038                            );
2039                            let end = buffer.anchor_before(
2040                                paste_position + metadata.range_relative_to_selection.end,
2041                            );
2042
2043                            let buffer_row = MultiBufferRow(start.to_point(&buffer).row);
2044                            buffer_rows_to_fold.insert(buffer_row);
2045                            Crease::inline(
2046                                start..end,
2047                                FoldPlaceholder {
2048                                    render: render_fold_icon_button(
2049                                        weak_editor.clone(),
2050                                        metadata.crease.icon,
2051                                        metadata.crease.label.clone(),
2052                                    ),
2053                                    ..Default::default()
2054                                },
2055                                render_slash_command_output_toggle,
2056                                |_, _, _, _| Empty.into_any(),
2057                            )
2058                            .with_metadata(metadata.crease.clone())
2059                        }),
2060                        cx,
2061                    );
2062                    for buffer_row in buffer_rows_to_fold.into_iter().rev() {
2063                        editor.fold_at(buffer_row, window, cx);
2064                    }
2065                }
2066            });
2067        } else {
2068            let mut image_positions = Vec::new();
2069            self.editor.update(cx, |editor, cx| {
2070                editor.transact(window, cx, |editor, _window, cx| {
2071                    let edits = editor
2072                        .selections
2073                        .all::<usize>(cx)
2074                        .into_iter()
2075                        .map(|selection| (selection.start..selection.end, "\n"));
2076                    editor.edit(edits, cx);
2077
2078                    let snapshot = editor.buffer().read(cx).snapshot(cx);
2079                    for selection in editor.selections.all::<usize>(cx) {
2080                        image_positions.push(snapshot.anchor_before(selection.end));
2081                    }
2082                });
2083            });
2084
2085            self.context.update(cx, |context, cx| {
2086                for image in images {
2087                    let Some(render_image) = image.to_image_data(cx.svg_renderer()).log_err()
2088                    else {
2089                        continue;
2090                    };
2091                    let image_id = image.id();
2092                    let image_task = LanguageModelImage::from_image(Arc::new(image), cx).shared();
2093
2094                    for image_position in image_positions.iter() {
2095                        context.insert_content(
2096                            Content::Image {
2097                                anchor: image_position.text_anchor,
2098                                image_id,
2099                                image: image_task.clone(),
2100                                render_image: render_image.clone(),
2101                            },
2102                            cx,
2103                        );
2104                    }
2105                }
2106            });
2107        }
2108    }
2109
2110    fn update_image_blocks(&mut self, cx: &mut Context<Self>) {
2111        self.editor.update(cx, |editor, cx| {
2112            let buffer = editor.buffer().read(cx).snapshot(cx);
2113            let excerpt_id = *buffer.as_singleton().unwrap().0;
2114            let old_blocks = std::mem::take(&mut self.image_blocks);
2115            let new_blocks = self
2116                .context
2117                .read(cx)
2118                .contents(cx)
2119                .map(
2120                    |Content::Image {
2121                         anchor,
2122                         render_image,
2123                         ..
2124                     }| (anchor, render_image),
2125                )
2126                .filter_map(|(anchor, render_image)| {
2127                    const MAX_HEIGHT_IN_LINES: u32 = 8;
2128                    let anchor = buffer.anchor_in_excerpt(excerpt_id, anchor).unwrap();
2129                    let image = render_image.clone();
2130                    anchor.is_valid(&buffer).then(|| BlockProperties {
2131                        placement: BlockPlacement::Above(anchor),
2132                        height: Some(MAX_HEIGHT_IN_LINES),
2133                        style: BlockStyle::Sticky,
2134                        render: Arc::new(move |cx| {
2135                            let image_size = size_for_image(
2136                                &image,
2137                                size(
2138                                    cx.max_width - cx.gutter_dimensions.full_width(),
2139                                    MAX_HEIGHT_IN_LINES as f32 * cx.line_height,
2140                                ),
2141                            );
2142                            h_flex()
2143                                .pl(cx.gutter_dimensions.full_width())
2144                                .child(
2145                                    img(image.clone())
2146                                        .object_fit(gpui::ObjectFit::ScaleDown)
2147                                        .w(image_size.width)
2148                                        .h(image_size.height),
2149                                )
2150                                .into_any_element()
2151                        }),
2152                        priority: 0,
2153                    })
2154                })
2155                .collect::<Vec<_>>();
2156
2157            editor.remove_blocks(old_blocks, None, cx);
2158            let ids = editor.insert_blocks(new_blocks, None, cx);
2159            self.image_blocks = HashSet::from_iter(ids);
2160        });
2161    }
2162
2163    fn split(&mut self, _: &Split, _window: &mut Window, cx: &mut Context<Self>) {
2164        self.context.update(cx, |context, cx| {
2165            let selections = self.editor.read(cx).selections.disjoint_anchors();
2166            for selection in selections.as_ref() {
2167                let buffer = self.editor.read(cx).buffer().read(cx).snapshot(cx);
2168                let range = selection
2169                    .map(|endpoint| endpoint.to_offset(&buffer))
2170                    .range();
2171                context.split_message(range, cx);
2172            }
2173        });
2174    }
2175
2176    fn save(&mut self, _: &Save, _window: &mut Window, cx: &mut Context<Self>) {
2177        self.context.update(cx, |context, cx| {
2178            context.save(Some(Duration::from_millis(500)), self.fs.clone(), cx)
2179        });
2180    }
2181
2182    pub fn title(&self, cx: &App) -> Cow<str> {
2183        self.context
2184            .read(cx)
2185            .summary()
2186            .map(|summary| summary.text.clone())
2187            .map(Cow::Owned)
2188            .unwrap_or_else(|| Cow::Borrowed(DEFAULT_TAB_TITLE))
2189    }
2190
2191    fn render_patch_block(
2192        &mut self,
2193        range: Range<text::Anchor>,
2194        max_width: Pixels,
2195        gutter_width: Pixels,
2196        id: BlockId,
2197        selected: bool,
2198        window: &mut Window,
2199        cx: &mut Context<Self>,
2200    ) -> Option<AnyElement> {
2201        let snapshot = self
2202            .editor
2203            .update(cx, |editor, cx| editor.snapshot(window, cx));
2204        let (excerpt_id, _buffer_id, _) = snapshot.buffer_snapshot.as_singleton().unwrap();
2205        let excerpt_id = *excerpt_id;
2206        let anchor = snapshot
2207            .buffer_snapshot
2208            .anchor_in_excerpt(excerpt_id, range.start)
2209            .unwrap();
2210
2211        let theme = cx.theme().clone();
2212        let patch = self.context.read(cx).patch_for_range(&range, cx)?;
2213        let paths = patch
2214            .paths()
2215            .map(|p| SharedString::from(p.to_string()))
2216            .collect::<BTreeSet<_>>();
2217
2218        Some(
2219            v_flex()
2220                .id(id)
2221                .bg(theme.colors().editor_background)
2222                .ml(gutter_width)
2223                .pb_1()
2224                .w(max_width - gutter_width)
2225                .rounded_sm()
2226                .border_1()
2227                .border_color(theme.colors().border_variant)
2228                .overflow_hidden()
2229                .hover(|style| style.border_color(theme.colors().text_accent))
2230                .when(selected, |this| {
2231                    this.border_color(theme.colors().text_accent)
2232                })
2233                .cursor(CursorStyle::PointingHand)
2234                .on_click(cx.listener(move |this, _, window, cx| {
2235                    this.editor.update(cx, |editor, cx| {
2236                        editor.change_selections(None, window, cx, |selections| {
2237                            selections.select_ranges(vec![anchor..anchor]);
2238                        });
2239                    });
2240                    this.focus_active_patch(window, cx);
2241                }))
2242                .child(
2243                    div()
2244                        .px_2()
2245                        .py_1()
2246                        .overflow_hidden()
2247                        .text_ellipsis()
2248                        .border_b_1()
2249                        .border_color(theme.colors().border_variant)
2250                        .bg(theme.colors().element_background)
2251                        .child(
2252                            Label::new(patch.title.clone())
2253                                .size(LabelSize::Small)
2254                                .color(Color::Muted),
2255                        ),
2256                )
2257                .children(paths.into_iter().map(|path| {
2258                    h_flex()
2259                        .px_2()
2260                        .pt_1()
2261                        .gap_1p5()
2262                        .child(Icon::new(IconName::File).size(IconSize::Small))
2263                        .child(Label::new(path).size(LabelSize::Small))
2264                }))
2265                .when(patch.status == AssistantPatchStatus::Pending, |div| {
2266                    div.child(
2267                        h_flex()
2268                            .pt_1()
2269                            .px_2()
2270                            .gap_1()
2271                            .child(
2272                                Icon::new(IconName::ArrowCircle)
2273                                    .size(IconSize::XSmall)
2274                                    .color(Color::Muted)
2275                                    .with_animation(
2276                                        "arrow-circle",
2277                                        Animation::new(Duration::from_secs(2)).repeat(),
2278                                        |icon, delta| {
2279                                            icon.transform(Transformation::rotate(percentage(
2280                                                delta,
2281                                            )))
2282                                        },
2283                                    ),
2284                            )
2285                            .child(
2286                                Label::new("Generating…")
2287                                    .color(Color::Muted)
2288                                    .size(LabelSize::Small)
2289                                    .with_animation(
2290                                        "pulsating-label",
2291                                        Animation::new(Duration::from_secs(2))
2292                                            .repeat()
2293                                            .with_easing(pulsating_between(0.4, 0.8)),
2294                                        |label, delta| label.alpha(delta),
2295                                    ),
2296                            ),
2297                    )
2298                })
2299                .into_any(),
2300        )
2301    }
2302
2303    fn render_notice(&self, cx: &mut Context<Self>) -> Option<AnyElement> {
2304        // This was previously gated behind the `zed-pro` feature flag. Since we
2305        // aren't planning to ship that right now, we're just hard-coding this
2306        // value to not show the nudge.
2307        let nudge = Some(false);
2308
2309        if nudge.map_or(false, |value| value) {
2310            Some(
2311                h_flex()
2312                    .p_3()
2313                    .border_b_1()
2314                    .border_color(cx.theme().colors().border_variant)
2315                    .bg(cx.theme().colors().editor_background)
2316                    .justify_between()
2317                    .child(
2318                        h_flex()
2319                            .gap_3()
2320                            .child(Icon::new(IconName::ZedAssistant).color(Color::Accent))
2321                            .child(Label::new("Zed AI is here! Get started by signing in →")),
2322                    )
2323                    .child(
2324                        Button::new("sign-in", "Sign in")
2325                            .size(ButtonSize::Compact)
2326                            .style(ButtonStyle::Filled)
2327                            .on_click(cx.listener(|this, _event, _window, cx| {
2328                                let client = this
2329                                    .workspace
2330                                    .update(cx, |workspace, _| workspace.client().clone())
2331                                    .log_err();
2332
2333                                if let Some(client) = client {
2334                                    cx.spawn(async move |this, cx| {
2335                                        client.authenticate_and_connect(true, cx).await?;
2336                                        this.update(cx, |_, cx| cx.notify())
2337                                    })
2338                                    .detach_and_log_err(cx)
2339                                }
2340                            })),
2341                    )
2342                    .into_any_element(),
2343            )
2344        } else if let Some(configuration_error) = configuration_error(cx) {
2345            let label = match configuration_error {
2346                ConfigurationError::NoProvider => "No LLM provider selected.",
2347                ConfigurationError::ProviderNotAuthenticated => "LLM provider is not configured.",
2348                ConfigurationError::ProviderPendingTermsAcceptance(_) => {
2349                    "LLM provider requires accepting the Terms of Service."
2350                }
2351            };
2352            Some(
2353                h_flex()
2354                    .px_3()
2355                    .py_2()
2356                    .border_b_1()
2357                    .border_color(cx.theme().colors().border_variant)
2358                    .bg(cx.theme().colors().editor_background)
2359                    .justify_between()
2360                    .child(
2361                        h_flex()
2362                            .gap_3()
2363                            .child(
2364                                Icon::new(IconName::Warning)
2365                                    .size(IconSize::Small)
2366                                    .color(Color::Warning),
2367                            )
2368                            .child(Label::new(label)),
2369                    )
2370                    .child(
2371                        Button::new("open-configuration", "Configure Providers")
2372                            .size(ButtonSize::Compact)
2373                            .icon(Some(IconName::SlidersVertical))
2374                            .icon_size(IconSize::Small)
2375                            .icon_position(IconPosition::Start)
2376                            .style(ButtonStyle::Filled)
2377                            .on_click({
2378                                let focus_handle = self.focus_handle(cx).clone();
2379                                move |_event, window, cx| {
2380                                    if cx.has_flag::<Assistant2FeatureFlag>() {
2381                                        focus_handle.dispatch_action(
2382                                            &zed_actions::agent::OpenConfiguration,
2383                                            window,
2384                                            cx,
2385                                        );
2386                                    } else {
2387                                        focus_handle.dispatch_action(
2388                                            &zed_actions::assistant::ShowConfiguration,
2389                                            window,
2390                                            cx,
2391                                        );
2392                                    };
2393                                }
2394                            }),
2395                    )
2396                    .into_any_element(),
2397            )
2398        } else {
2399            None
2400        }
2401    }
2402
2403    fn render_send_button(&self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
2404        let focus_handle = self.focus_handle(cx).clone();
2405
2406        let (style, tooltip) = match token_state(&self.context, cx) {
2407            Some(TokenState::NoTokensLeft { .. }) => (
2408                ButtonStyle::Tinted(TintColor::Error),
2409                Some(Tooltip::text("Token limit reached")(window, cx)),
2410            ),
2411            Some(TokenState::HasMoreTokens {
2412                over_warn_threshold,
2413                ..
2414            }) => {
2415                let (style, tooltip) = if over_warn_threshold {
2416                    (
2417                        ButtonStyle::Tinted(TintColor::Warning),
2418                        Some(Tooltip::text("Token limit is close to exhaustion")(
2419                            window, cx,
2420                        )),
2421                    )
2422                } else {
2423                    (ButtonStyle::Filled, None)
2424                };
2425                (style, tooltip)
2426            }
2427            None => (ButtonStyle::Filled, None),
2428        };
2429
2430        let model = LanguageModelRegistry::read_global(cx).default_model();
2431
2432        let has_configuration_error = configuration_error(cx).is_some();
2433        let needs_to_accept_terms = self.show_accept_terms
2434            && model
2435                .as_ref()
2436                .map_or(false, |model| model.provider.must_accept_terms(cx));
2437        let disabled = has_configuration_error || needs_to_accept_terms;
2438
2439        ButtonLike::new("send_button")
2440            .disabled(disabled)
2441            .style(style)
2442            .when_some(tooltip, |button, tooltip| {
2443                button.tooltip(move |_, _| tooltip.clone())
2444            })
2445            .layer(ElevationIndex::ModalSurface)
2446            .child(Label::new(
2447                if AssistantSettings::get_global(cx).are_live_diffs_enabled(cx) {
2448                    "Chat"
2449                } else {
2450                    "Send"
2451                },
2452            ))
2453            .children(
2454                KeyBinding::for_action_in(&Assist, &focus_handle, window, cx)
2455                    .map(|binding| binding.into_any_element()),
2456            )
2457            .on_click(move |_event, window, cx| {
2458                focus_handle.dispatch_action(&Assist, window, cx);
2459            })
2460    }
2461
2462    fn render_edit_button(&self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
2463        let focus_handle = self.focus_handle(cx).clone();
2464
2465        let (style, tooltip) = match token_state(&self.context, cx) {
2466            Some(TokenState::NoTokensLeft { .. }) => (
2467                ButtonStyle::Tinted(TintColor::Error),
2468                Some(Tooltip::text("Token limit reached")(window, cx)),
2469            ),
2470            Some(TokenState::HasMoreTokens {
2471                over_warn_threshold,
2472                ..
2473            }) => {
2474                let (style, tooltip) = if over_warn_threshold {
2475                    (
2476                        ButtonStyle::Tinted(TintColor::Warning),
2477                        Some(Tooltip::text("Token limit is close to exhaustion")(
2478                            window, cx,
2479                        )),
2480                    )
2481                } else {
2482                    (ButtonStyle::Filled, None)
2483                };
2484                (style, tooltip)
2485            }
2486            None => (ButtonStyle::Filled, None),
2487        };
2488
2489        let provider = LanguageModelRegistry::read_global(cx)
2490            .default_model()
2491            .map(|default| default.provider);
2492
2493        let has_configuration_error = configuration_error(cx).is_some();
2494        let needs_to_accept_terms = self.show_accept_terms
2495            && provider
2496                .as_ref()
2497                .map_or(false, |provider| provider.must_accept_terms(cx));
2498        let disabled = has_configuration_error || needs_to_accept_terms;
2499
2500        ButtonLike::new("edit_button")
2501            .disabled(disabled)
2502            .style(style)
2503            .when_some(tooltip, |button, tooltip| {
2504                button.tooltip(move |_, _| tooltip.clone())
2505            })
2506            .layer(ElevationIndex::ModalSurface)
2507            .child(Label::new("Suggest Edits"))
2508            .children(
2509                KeyBinding::for_action_in(&Edit, &focus_handle, window, cx)
2510                    .map(|binding| binding.into_any_element()),
2511            )
2512            .on_click(move |_event, window, cx| {
2513                focus_handle.dispatch_action(&Edit, window, cx);
2514            })
2515    }
2516
2517    fn render_inject_context_menu(&self, cx: &mut Context<Self>) -> impl IntoElement {
2518        slash_command_picker::SlashCommandSelector::new(
2519            self.slash_commands.clone(),
2520            cx.entity().downgrade(),
2521            IconButton::new("trigger", IconName::Plus)
2522                .icon_size(IconSize::Small)
2523                .icon_color(Color::Muted),
2524            move |window, cx| {
2525                Tooltip::with_meta(
2526                    "Add Context",
2527                    None,
2528                    "Type / to insert via keyboard",
2529                    window,
2530                    cx,
2531                )
2532            },
2533        )
2534    }
2535
2536    fn render_language_model_selector(&self, cx: &mut Context<Self>) -> impl IntoElement {
2537        let active_model = LanguageModelRegistry::read_global(cx)
2538            .default_model()
2539            .map(|default| default.model);
2540        let focus_handle = self.editor().focus_handle(cx).clone();
2541        let model_name = match active_model {
2542            Some(model) => model.name().0,
2543            None => SharedString::from("No model selected"),
2544        };
2545
2546        LanguageModelSelectorPopoverMenu::new(
2547            self.language_model_selector.clone(),
2548            ButtonLike::new("active-model")
2549                .style(ButtonStyle::Subtle)
2550                .child(
2551                    h_flex()
2552                        .gap_0p5()
2553                        .child(
2554                            Label::new(model_name)
2555                                .size(LabelSize::Small)
2556                                .color(Color::Muted),
2557                        )
2558                        .child(
2559                            Icon::new(IconName::ChevronDown)
2560                                .color(Color::Muted)
2561                                .size(IconSize::XSmall),
2562                        ),
2563                ),
2564            move |window, cx| {
2565                Tooltip::for_action_in(
2566                    "Change Model",
2567                    &ToggleModelSelector,
2568                    &focus_handle,
2569                    window,
2570                    cx,
2571                )
2572            },
2573            gpui::Corner::BottomLeft,
2574        )
2575        .with_handle(self.language_model_selector_menu_handle.clone())
2576    }
2577
2578    fn render_last_error(&self, cx: &mut Context<Self>) -> Option<AnyElement> {
2579        let last_error = self.last_error.as_ref()?;
2580
2581        Some(
2582            div()
2583                .absolute()
2584                .right_3()
2585                .bottom_12()
2586                .max_w_96()
2587                .py_2()
2588                .px_3()
2589                .elevation_2(cx)
2590                .occlude()
2591                .child(match last_error {
2592                    AssistError::FileRequired => self.render_file_required_error(cx),
2593                    AssistError::PaymentRequired => self.render_payment_required_error(cx),
2594                    AssistError::MaxMonthlySpendReached => {
2595                        self.render_max_monthly_spend_reached_error(cx)
2596                    }
2597                    AssistError::Message(error_message) => {
2598                        self.render_assist_error(error_message, cx)
2599                    }
2600                })
2601                .into_any(),
2602        )
2603    }
2604
2605    fn render_file_required_error(&self, cx: &mut Context<Self>) -> AnyElement {
2606        v_flex()
2607            .gap_0p5()
2608            .child(
2609                h_flex()
2610                    .gap_1p5()
2611                    .items_center()
2612                    .child(Icon::new(IconName::Warning).color(Color::Warning))
2613                    .child(
2614                        Label::new("Suggest Edits needs a file to edit").weight(FontWeight::MEDIUM),
2615                    ),
2616            )
2617            .child(
2618                div()
2619                    .id("error-message")
2620                    .max_h_24()
2621                    .overflow_y_scroll()
2622                    .child(Label::new(
2623                        "To include files, type /file or /tab in your prompt.",
2624                    )),
2625            )
2626            .child(
2627                h_flex()
2628                    .justify_end()
2629                    .mt_1()
2630                    .child(Button::new("dismiss", "Dismiss").on_click(cx.listener(
2631                        |this, _, _window, cx| {
2632                            this.last_error = None;
2633                            cx.notify();
2634                        },
2635                    ))),
2636            )
2637            .into_any()
2638    }
2639
2640    fn render_payment_required_error(&self, cx: &mut Context<Self>) -> AnyElement {
2641        const ERROR_MESSAGE: &str = "Free tier exceeded. Subscribe and add payment to continue using Zed LLMs. You'll be billed at cost for tokens used.";
2642
2643        v_flex()
2644            .gap_0p5()
2645            .child(
2646                h_flex()
2647                    .gap_1p5()
2648                    .items_center()
2649                    .child(Icon::new(IconName::XCircle).color(Color::Error))
2650                    .child(Label::new("Free Usage Exceeded").weight(FontWeight::MEDIUM)),
2651            )
2652            .child(
2653                div()
2654                    .id("error-message")
2655                    .max_h_24()
2656                    .overflow_y_scroll()
2657                    .child(Label::new(ERROR_MESSAGE)),
2658            )
2659            .child(
2660                h_flex()
2661                    .justify_end()
2662                    .mt_1()
2663                    .child(Button::new("subscribe", "Subscribe").on_click(cx.listener(
2664                        |this, _, _window, cx| {
2665                            this.last_error = None;
2666                            cx.open_url(&zed_urls::account_url(cx));
2667                            cx.notify();
2668                        },
2669                    )))
2670                    .child(Button::new("dismiss", "Dismiss").on_click(cx.listener(
2671                        |this, _, _window, cx| {
2672                            this.last_error = None;
2673                            cx.notify();
2674                        },
2675                    ))),
2676            )
2677            .into_any()
2678    }
2679
2680    fn render_max_monthly_spend_reached_error(&self, cx: &mut Context<Self>) -> AnyElement {
2681        const ERROR_MESSAGE: &str = "You have reached your maximum monthly spend. Increase your spend limit to continue using Zed LLMs.";
2682
2683        v_flex()
2684            .gap_0p5()
2685            .child(
2686                h_flex()
2687                    .gap_1p5()
2688                    .items_center()
2689                    .child(Icon::new(IconName::XCircle).color(Color::Error))
2690                    .child(Label::new("Max Monthly Spend Reached").weight(FontWeight::MEDIUM)),
2691            )
2692            .child(
2693                div()
2694                    .id("error-message")
2695                    .max_h_24()
2696                    .overflow_y_scroll()
2697                    .child(Label::new(ERROR_MESSAGE)),
2698            )
2699            .child(
2700                h_flex()
2701                    .justify_end()
2702                    .mt_1()
2703                    .child(
2704                        Button::new("subscribe", "Update Monthly Spend Limit").on_click(
2705                            cx.listener(|this, _, _window, cx| {
2706                                this.last_error = None;
2707                                cx.open_url(&zed_urls::account_url(cx));
2708                                cx.notify();
2709                            }),
2710                        ),
2711                    )
2712                    .child(Button::new("dismiss", "Dismiss").on_click(cx.listener(
2713                        |this, _, _window, cx| {
2714                            this.last_error = None;
2715                            cx.notify();
2716                        },
2717                    ))),
2718            )
2719            .into_any()
2720    }
2721
2722    fn render_assist_error(
2723        &self,
2724        error_message: &SharedString,
2725        cx: &mut Context<Self>,
2726    ) -> AnyElement {
2727        v_flex()
2728            .gap_0p5()
2729            .child(
2730                h_flex()
2731                    .gap_1p5()
2732                    .items_center()
2733                    .child(Icon::new(IconName::XCircle).color(Color::Error))
2734                    .child(
2735                        Label::new("Error interacting with language model")
2736                            .weight(FontWeight::MEDIUM),
2737                    ),
2738            )
2739            .child(
2740                div()
2741                    .id("error-message")
2742                    .max_h_32()
2743                    .overflow_y_scroll()
2744                    .child(Label::new(error_message.clone())),
2745            )
2746            .child(
2747                h_flex()
2748                    .justify_end()
2749                    .mt_1()
2750                    .child(Button::new("dismiss", "Dismiss").on_click(cx.listener(
2751                        |this, _, _window, cx| {
2752                            this.last_error = None;
2753                            cx.notify();
2754                        },
2755                    ))),
2756            )
2757            .into_any()
2758    }
2759}
2760
2761/// Returns the contents of the *outermost* fenced code block that contains the given offset.
2762fn find_surrounding_code_block(snapshot: &BufferSnapshot, offset: usize) -> Option<Range<usize>> {
2763    const CODE_BLOCK_NODE: &'static str = "fenced_code_block";
2764    const CODE_BLOCK_CONTENT: &'static str = "code_fence_content";
2765
2766    let layer = snapshot.syntax_layers().next()?;
2767
2768    let root_node = layer.node();
2769    let mut cursor = root_node.walk();
2770
2771    // Go to the first child for the given offset
2772    while cursor.goto_first_child_for_byte(offset).is_some() {
2773        // If we're at the end of the node, go to the next one.
2774        // Example: if you have a fenced-code-block, and you're on the start of the line
2775        // right after the closing ```, you want to skip the fenced-code-block and
2776        // go to the next sibling.
2777        if cursor.node().end_byte() == offset {
2778            cursor.goto_next_sibling();
2779        }
2780
2781        if cursor.node().start_byte() > offset {
2782            break;
2783        }
2784
2785        // We found the fenced code block.
2786        if cursor.node().kind() == CODE_BLOCK_NODE {
2787            // Now we need to find the child node that contains the code.
2788            cursor.goto_first_child();
2789            loop {
2790                if cursor.node().kind() == CODE_BLOCK_CONTENT {
2791                    return Some(cursor.node().byte_range());
2792                }
2793                if !cursor.goto_next_sibling() {
2794                    break;
2795                }
2796            }
2797        }
2798    }
2799
2800    None
2801}
2802
2803fn render_thought_process_fold_icon_button(
2804    editor: WeakEntity<Editor>,
2805    status: ThoughtProcessStatus,
2806) -> Arc<dyn Send + Sync + Fn(FoldId, Range<Anchor>, &mut App) -> AnyElement> {
2807    Arc::new(move |fold_id, fold_range, _cx| {
2808        let editor = editor.clone();
2809
2810        let button = ButtonLike::new(fold_id).layer(ElevationIndex::ElevatedSurface);
2811        let button = match status {
2812            ThoughtProcessStatus::Pending => button
2813                .child(
2814                    Icon::new(IconName::LightBulb)
2815                        .size(IconSize::Small)
2816                        .color(Color::Muted),
2817                )
2818                .child(
2819                    Label::new("Thinking…").color(Color::Muted).with_animation(
2820                        "pulsating-label",
2821                        Animation::new(Duration::from_secs(2))
2822                            .repeat()
2823                            .with_easing(pulsating_between(0.4, 0.8)),
2824                        |label, delta| label.alpha(delta),
2825                    ),
2826                ),
2827            ThoughtProcessStatus::Completed => button
2828                .style(ButtonStyle::Filled)
2829                .child(Icon::new(IconName::LightBulb).size(IconSize::Small))
2830                .child(Label::new("Thought Process").single_line()),
2831        };
2832
2833        button
2834            .on_click(move |_, window, cx| {
2835                editor
2836                    .update(cx, |editor, cx| {
2837                        let buffer_start = fold_range
2838                            .start
2839                            .to_point(&editor.buffer().read(cx).read(cx));
2840                        let buffer_row = MultiBufferRow(buffer_start.row);
2841                        editor.unfold_at(buffer_row, window, cx);
2842                    })
2843                    .ok();
2844            })
2845            .into_any_element()
2846    })
2847}
2848
2849fn render_fold_icon_button(
2850    editor: WeakEntity<Editor>,
2851    icon: IconName,
2852    label: SharedString,
2853) -> Arc<dyn Send + Sync + Fn(FoldId, Range<Anchor>, &mut App) -> AnyElement> {
2854    Arc::new(move |fold_id, fold_range, _cx| {
2855        let editor = editor.clone();
2856        ButtonLike::new(fold_id)
2857            .style(ButtonStyle::Filled)
2858            .layer(ElevationIndex::ElevatedSurface)
2859            .child(Icon::new(icon))
2860            .child(Label::new(label.clone()).single_line())
2861            .on_click(move |_, window, cx| {
2862                editor
2863                    .update(cx, |editor, cx| {
2864                        let buffer_start = fold_range
2865                            .start
2866                            .to_point(&editor.buffer().read(cx).read(cx));
2867                        let buffer_row = MultiBufferRow(buffer_start.row);
2868                        editor.unfold_at(buffer_row, window, cx);
2869                    })
2870                    .ok();
2871            })
2872            .into_any_element()
2873    })
2874}
2875
2876type ToggleFold = Arc<dyn Fn(bool, &mut Window, &mut App) + Send + Sync>;
2877
2878fn render_slash_command_output_toggle(
2879    row: MultiBufferRow,
2880    is_folded: bool,
2881    fold: ToggleFold,
2882    _window: &mut Window,
2883    _cx: &mut App,
2884) -> AnyElement {
2885    Disclosure::new(
2886        ("slash-command-output-fold-indicator", row.0 as u64),
2887        !is_folded,
2888    )
2889    .toggle_state(is_folded)
2890    .on_click(move |_e, window, cx| fold(!is_folded, window, cx))
2891    .into_any_element()
2892}
2893
2894pub fn fold_toggle(
2895    name: &'static str,
2896) -> impl Fn(
2897    MultiBufferRow,
2898    bool,
2899    Arc<dyn Fn(bool, &mut Window, &mut App) + Send + Sync>,
2900    &mut Window,
2901    &mut App,
2902) -> AnyElement {
2903    move |row, is_folded, fold, _window, _cx| {
2904        Disclosure::new((name, row.0 as u64), !is_folded)
2905            .toggle_state(is_folded)
2906            .on_click(move |_e, window, cx| fold(!is_folded, window, cx))
2907            .into_any_element()
2908    }
2909}
2910
2911fn quote_selection_fold_placeholder(title: String, editor: WeakEntity<Editor>) -> FoldPlaceholder {
2912    FoldPlaceholder {
2913        render: Arc::new({
2914            move |fold_id, fold_range, _cx| {
2915                let editor = editor.clone();
2916                ButtonLike::new(fold_id)
2917                    .style(ButtonStyle::Filled)
2918                    .layer(ElevationIndex::ElevatedSurface)
2919                    .child(Icon::new(IconName::TextSnippet))
2920                    .child(Label::new(title.clone()).single_line())
2921                    .on_click(move |_, window, cx| {
2922                        editor
2923                            .update(cx, |editor, cx| {
2924                                let buffer_start = fold_range
2925                                    .start
2926                                    .to_point(&editor.buffer().read(cx).read(cx));
2927                                let buffer_row = MultiBufferRow(buffer_start.row);
2928                                editor.unfold_at(buffer_row, window, cx);
2929                            })
2930                            .ok();
2931                    })
2932                    .into_any_element()
2933            }
2934        }),
2935        merge_adjacent: false,
2936        ..Default::default()
2937    }
2938}
2939
2940fn render_quote_selection_output_toggle(
2941    row: MultiBufferRow,
2942    is_folded: bool,
2943    fold: ToggleFold,
2944    _window: &mut Window,
2945    _cx: &mut App,
2946) -> AnyElement {
2947    Disclosure::new(("quote-selection-indicator", row.0 as u64), !is_folded)
2948        .toggle_state(is_folded)
2949        .on_click(move |_e, window, cx| fold(!is_folded, window, cx))
2950        .into_any_element()
2951}
2952
2953fn render_pending_slash_command_gutter_decoration(
2954    row: MultiBufferRow,
2955    status: &PendingSlashCommandStatus,
2956    confirm_command: Arc<dyn Fn(&mut Window, &mut App)>,
2957) -> AnyElement {
2958    let mut icon = IconButton::new(
2959        ("slash-command-gutter-decoration", row.0),
2960        ui::IconName::TriangleRight,
2961    )
2962    .on_click(move |_e, window, cx| confirm_command(window, cx))
2963    .icon_size(ui::IconSize::Small)
2964    .size(ui::ButtonSize::None);
2965
2966    match status {
2967        PendingSlashCommandStatus::Idle => {
2968            icon = icon.icon_color(Color::Muted);
2969        }
2970        PendingSlashCommandStatus::Running { .. } => {
2971            icon = icon.toggle_state(true);
2972        }
2973        PendingSlashCommandStatus::Error(_) => icon = icon.icon_color(Color::Error),
2974    }
2975
2976    icon.into_any_element()
2977}
2978
2979fn render_docs_slash_command_trailer(
2980    row: MultiBufferRow,
2981    command: ParsedSlashCommand,
2982    cx: &mut App,
2983) -> AnyElement {
2984    if command.arguments.is_empty() {
2985        return Empty.into_any();
2986    }
2987    let args = DocsSlashCommandArgs::parse(&command.arguments);
2988
2989    let Some(store) = args
2990        .provider()
2991        .and_then(|provider| IndexedDocsStore::try_global(provider, cx).ok())
2992    else {
2993        return Empty.into_any();
2994    };
2995
2996    let Some(package) = args.package() else {
2997        return Empty.into_any();
2998    };
2999
3000    let mut children = Vec::new();
3001
3002    if store.is_indexing(&package) {
3003        children.push(
3004            div()
3005                .id(("crates-being-indexed", row.0))
3006                .child(Icon::new(IconName::ArrowCircle).with_animation(
3007                    "arrow-circle",
3008                    Animation::new(Duration::from_secs(4)).repeat(),
3009                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
3010                ))
3011                .tooltip({
3012                    let package = package.clone();
3013                    Tooltip::text(format!("Indexing {package}"))
3014                })
3015                .into_any_element(),
3016        );
3017    }
3018
3019    if let Some(latest_error) = store.latest_error_for_package(&package) {
3020        children.push(
3021            div()
3022                .id(("latest-error", row.0))
3023                .child(
3024                    Icon::new(IconName::Warning)
3025                        .size(IconSize::Small)
3026                        .color(Color::Warning),
3027                )
3028                .tooltip(Tooltip::text(format!("Failed to index: {latest_error}")))
3029                .into_any_element(),
3030        )
3031    }
3032
3033    let is_indexing = store.is_indexing(&package);
3034    let latest_error = store.latest_error_for_package(&package);
3035
3036    if !is_indexing && latest_error.is_none() {
3037        return Empty.into_any();
3038    }
3039
3040    h_flex().gap_2().children(children).into_any_element()
3041}
3042
3043#[derive(Debug, Clone, Serialize, Deserialize)]
3044struct CopyMetadata {
3045    creases: Vec<SelectedCreaseMetadata>,
3046}
3047
3048#[derive(Debug, Clone, Serialize, Deserialize)]
3049struct SelectedCreaseMetadata {
3050    range_relative_to_selection: Range<usize>,
3051    crease: CreaseMetadata,
3052}
3053
3054impl EventEmitter<EditorEvent> for ContextEditor {}
3055impl EventEmitter<SearchEvent> for ContextEditor {}
3056
3057impl Render for ContextEditor {
3058    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3059        let provider = LanguageModelRegistry::read_global(cx)
3060            .default_model()
3061            .map(|default| default.provider);
3062        let accept_terms = if self.show_accept_terms {
3063            provider.as_ref().and_then(|provider| {
3064                provider.render_accept_terms(LanguageModelProviderTosView::PromptEditorPopup, cx)
3065            })
3066        } else {
3067            None
3068        };
3069
3070        let language_model_selector = self.language_model_selector_menu_handle.clone();
3071        v_flex()
3072            .key_context("ContextEditor")
3073            .capture_action(cx.listener(ContextEditor::cancel))
3074            .capture_action(cx.listener(ContextEditor::save))
3075            .capture_action(cx.listener(ContextEditor::copy))
3076            .capture_action(cx.listener(ContextEditor::cut))
3077            .capture_action(cx.listener(ContextEditor::paste))
3078            .capture_action(cx.listener(ContextEditor::cycle_message_role))
3079            .capture_action(cx.listener(ContextEditor::confirm_command))
3080            .on_action(cx.listener(ContextEditor::edit))
3081            .on_action(cx.listener(ContextEditor::assist))
3082            .on_action(cx.listener(ContextEditor::split))
3083            .on_action(move |_: &ToggleModelSelector, window, cx| {
3084                language_model_selector.toggle(window, cx);
3085            })
3086            .size_full()
3087            .children(self.render_notice(cx))
3088            .child(
3089                div()
3090                    .flex_grow()
3091                    .bg(cx.theme().colors().editor_background)
3092                    .child(self.editor.clone()),
3093            )
3094            .when_some(accept_terms, |this, element| {
3095                this.child(
3096                    div()
3097                        .absolute()
3098                        .right_3()
3099                        .bottom_12()
3100                        .max_w_96()
3101                        .py_2()
3102                        .px_3()
3103                        .elevation_2(cx)
3104                        .bg(cx.theme().colors().surface_background)
3105                        .occlude()
3106                        .child(element),
3107                )
3108            })
3109            .children(self.render_last_error(cx))
3110            .child(
3111                h_flex().w_full().relative().child(
3112                    h_flex()
3113                        .p_2()
3114                        .w_full()
3115                        .border_t_1()
3116                        .border_color(cx.theme().colors().border_variant)
3117                        .bg(cx.theme().colors().editor_background)
3118                        .child(
3119                            h_flex()
3120                                .gap_1()
3121                                .child(self.render_inject_context_menu(cx))
3122                                .child(ui::Divider::vertical())
3123                                .child(
3124                                    div()
3125                                        .pl_0p5()
3126                                        .child(self.render_language_model_selector(cx)),
3127                                ),
3128                        )
3129                        .child(
3130                            h_flex()
3131                                .w_full()
3132                                .justify_end()
3133                                .when(
3134                                    AssistantSettings::get_global(cx).are_live_diffs_enabled(cx),
3135                                    |buttons| {
3136                                        buttons
3137                                            .items_center()
3138                                            .gap_1p5()
3139                                            .child(self.render_edit_button(window, cx))
3140                                            .child(
3141                                                Label::new("or")
3142                                                    .size(LabelSize::Small)
3143                                                    .color(Color::Muted),
3144                                            )
3145                                    },
3146                                )
3147                                .child(self.render_send_button(window, cx)),
3148                        ),
3149                ),
3150            )
3151    }
3152}
3153
3154impl Focusable for ContextEditor {
3155    fn focus_handle(&self, cx: &App) -> FocusHandle {
3156        self.editor.focus_handle(cx)
3157    }
3158}
3159
3160impl Item for ContextEditor {
3161    type Event = editor::EditorEvent;
3162
3163    fn tab_content_text(&self, _detail: usize, cx: &App) -> SharedString {
3164        util::truncate_and_trailoff(&self.title(cx), MAX_TAB_TITLE_LEN).into()
3165    }
3166
3167    fn to_item_events(event: &Self::Event, mut f: impl FnMut(item::ItemEvent)) {
3168        match event {
3169            EditorEvent::Edited { .. } => {
3170                f(item::ItemEvent::Edit);
3171            }
3172            EditorEvent::TitleChanged => {
3173                f(item::ItemEvent::UpdateTab);
3174            }
3175            _ => {}
3176        }
3177    }
3178
3179    fn tab_tooltip_text(&self, cx: &App) -> Option<SharedString> {
3180        Some(self.title(cx).to_string().into())
3181    }
3182
3183    fn as_searchable(&self, handle: &Entity<Self>) -> Option<Box<dyn SearchableItemHandle>> {
3184        Some(Box::new(handle.clone()))
3185    }
3186
3187    fn set_nav_history(
3188        &mut self,
3189        nav_history: pane::ItemNavHistory,
3190        window: &mut Window,
3191        cx: &mut Context<Self>,
3192    ) {
3193        self.editor.update(cx, |editor, cx| {
3194            Item::set_nav_history(editor, nav_history, window, cx)
3195        })
3196    }
3197
3198    fn navigate(
3199        &mut self,
3200        data: Box<dyn std::any::Any>,
3201        window: &mut Window,
3202        cx: &mut Context<Self>,
3203    ) -> bool {
3204        self.editor
3205            .update(cx, |editor, cx| Item::navigate(editor, data, window, cx))
3206    }
3207
3208    fn deactivated(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3209        self.editor
3210            .update(cx, |editor, cx| Item::deactivated(editor, window, cx))
3211    }
3212
3213    fn act_as_type<'a>(
3214        &'a self,
3215        type_id: TypeId,
3216        self_handle: &'a Entity<Self>,
3217        _: &'a App,
3218    ) -> Option<AnyView> {
3219        if type_id == TypeId::of::<Self>() {
3220            Some(self_handle.to_any())
3221        } else if type_id == TypeId::of::<Editor>() {
3222            Some(self.editor.to_any())
3223        } else {
3224            None
3225        }
3226    }
3227
3228    fn include_in_nav_history() -> bool {
3229        false
3230    }
3231}
3232
3233impl SearchableItem for ContextEditor {
3234    type Match = <Editor as SearchableItem>::Match;
3235
3236    fn clear_matches(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3237        self.editor.update(cx, |editor, cx| {
3238            editor.clear_matches(window, cx);
3239        });
3240    }
3241
3242    fn update_matches(
3243        &mut self,
3244        matches: &[Self::Match],
3245        window: &mut Window,
3246        cx: &mut Context<Self>,
3247    ) {
3248        self.editor
3249            .update(cx, |editor, cx| editor.update_matches(matches, window, cx));
3250    }
3251
3252    fn query_suggestion(&mut self, window: &mut Window, cx: &mut Context<Self>) -> String {
3253        self.editor
3254            .update(cx, |editor, cx| editor.query_suggestion(window, cx))
3255    }
3256
3257    fn activate_match(
3258        &mut self,
3259        index: usize,
3260        matches: &[Self::Match],
3261        window: &mut Window,
3262        cx: &mut Context<Self>,
3263    ) {
3264        self.editor.update(cx, |editor, cx| {
3265            editor.activate_match(index, matches, window, cx);
3266        });
3267    }
3268
3269    fn select_matches(
3270        &mut self,
3271        matches: &[Self::Match],
3272        window: &mut Window,
3273        cx: &mut Context<Self>,
3274    ) {
3275        self.editor
3276            .update(cx, |editor, cx| editor.select_matches(matches, window, cx));
3277    }
3278
3279    fn replace(
3280        &mut self,
3281        identifier: &Self::Match,
3282        query: &project::search::SearchQuery,
3283        window: &mut Window,
3284        cx: &mut Context<Self>,
3285    ) {
3286        self.editor.update(cx, |editor, cx| {
3287            editor.replace(identifier, query, window, cx)
3288        });
3289    }
3290
3291    fn find_matches(
3292        &mut self,
3293        query: Arc<project::search::SearchQuery>,
3294        window: &mut Window,
3295        cx: &mut Context<Self>,
3296    ) -> Task<Vec<Self::Match>> {
3297        self.editor
3298            .update(cx, |editor, cx| editor.find_matches(query, window, cx))
3299    }
3300
3301    fn active_match_index(
3302        &mut self,
3303        direction: Direction,
3304        matches: &[Self::Match],
3305        window: &mut Window,
3306        cx: &mut Context<Self>,
3307    ) -> Option<usize> {
3308        self.editor.update(cx, |editor, cx| {
3309            editor.active_match_index(direction, matches, window, cx)
3310        })
3311    }
3312}
3313
3314impl FollowableItem for ContextEditor {
3315    fn remote_id(&self) -> Option<workspace::ViewId> {
3316        self.remote_id
3317    }
3318
3319    fn to_state_proto(&self, window: &Window, cx: &App) -> Option<proto::view::Variant> {
3320        let context = self.context.read(cx);
3321        Some(proto::view::Variant::ContextEditor(
3322            proto::view::ContextEditor {
3323                context_id: context.id().to_proto(),
3324                editor: if let Some(proto::view::Variant::Editor(proto)) =
3325                    self.editor.read(cx).to_state_proto(window, cx)
3326                {
3327                    Some(proto)
3328                } else {
3329                    None
3330                },
3331            },
3332        ))
3333    }
3334
3335    fn from_state_proto(
3336        workspace: Entity<Workspace>,
3337        id: workspace::ViewId,
3338        state: &mut Option<proto::view::Variant>,
3339        window: &mut Window,
3340        cx: &mut App,
3341    ) -> Option<Task<Result<Entity<Self>>>> {
3342        let proto::view::Variant::ContextEditor(_) = state.as_ref()? else {
3343            return None;
3344        };
3345        let Some(proto::view::Variant::ContextEditor(state)) = state.take() else {
3346            unreachable!()
3347        };
3348
3349        let context_id = ContextId::from_proto(state.context_id);
3350        let editor_state = state.editor?;
3351
3352        let project = workspace.read(cx).project().clone();
3353        let assistant_panel_delegate = <dyn AssistantPanelDelegate>::try_global(cx)?;
3354
3355        let context_editor_task = workspace.update(cx, |workspace, cx| {
3356            assistant_panel_delegate.open_remote_context(workspace, context_id, window, cx)
3357        });
3358
3359        Some(window.spawn(cx, async move |cx| {
3360            let context_editor = context_editor_task.await?;
3361            context_editor
3362                .update_in(cx, |context_editor, window, cx| {
3363                    context_editor.remote_id = Some(id);
3364                    context_editor.editor.update(cx, |editor, cx| {
3365                        editor.apply_update_proto(
3366                            &project,
3367                            proto::update_view::Variant::Editor(proto::update_view::Editor {
3368                                selections: editor_state.selections,
3369                                pending_selection: editor_state.pending_selection,
3370                                scroll_top_anchor: editor_state.scroll_top_anchor,
3371                                scroll_x: editor_state.scroll_y,
3372                                scroll_y: editor_state.scroll_y,
3373                                ..Default::default()
3374                            }),
3375                            window,
3376                            cx,
3377                        )
3378                    })
3379                })?
3380                .await?;
3381            Ok(context_editor)
3382        }))
3383    }
3384
3385    fn to_follow_event(event: &Self::Event) -> Option<item::FollowEvent> {
3386        Editor::to_follow_event(event)
3387    }
3388
3389    fn add_event_to_update_proto(
3390        &self,
3391        event: &Self::Event,
3392        update: &mut Option<proto::update_view::Variant>,
3393        window: &Window,
3394        cx: &App,
3395    ) -> bool {
3396        self.editor
3397            .read(cx)
3398            .add_event_to_update_proto(event, update, window, cx)
3399    }
3400
3401    fn apply_update_proto(
3402        &mut self,
3403        project: &Entity<Project>,
3404        message: proto::update_view::Variant,
3405        window: &mut Window,
3406        cx: &mut Context<Self>,
3407    ) -> Task<Result<()>> {
3408        self.editor.update(cx, |editor, cx| {
3409            editor.apply_update_proto(project, message, window, cx)
3410        })
3411    }
3412
3413    fn is_project_item(&self, _window: &Window, _cx: &App) -> bool {
3414        true
3415    }
3416
3417    fn set_leader_peer_id(
3418        &mut self,
3419        leader_peer_id: Option<proto::PeerId>,
3420        window: &mut Window,
3421        cx: &mut Context<Self>,
3422    ) {
3423        self.editor.update(cx, |editor, cx| {
3424            editor.set_leader_peer_id(leader_peer_id, window, cx)
3425        })
3426    }
3427
3428    fn dedup(&self, existing: &Self, _window: &Window, cx: &App) -> Option<item::Dedup> {
3429        if existing.context.read(cx).id() == self.context.read(cx).id() {
3430            Some(item::Dedup::KeepExisting)
3431        } else {
3432            None
3433        }
3434    }
3435}
3436
3437pub struct ContextEditorToolbarItem {
3438    active_context_editor: Option<WeakEntity<ContextEditor>>,
3439    model_summary_editor: Entity<Editor>,
3440}
3441
3442impl ContextEditorToolbarItem {
3443    pub fn new(model_summary_editor: Entity<Editor>) -> Self {
3444        Self {
3445            active_context_editor: None,
3446            model_summary_editor,
3447        }
3448    }
3449}
3450
3451pub fn render_remaining_tokens(
3452    context_editor: &Entity<ContextEditor>,
3453    cx: &App,
3454) -> Option<impl IntoElement + use<>> {
3455    let context = &context_editor.read(cx).context;
3456
3457    let (token_count_color, token_count, max_token_count, tooltip) = match token_state(context, cx)?
3458    {
3459        TokenState::NoTokensLeft {
3460            max_token_count,
3461            token_count,
3462        } => (
3463            Color::Error,
3464            token_count,
3465            max_token_count,
3466            Some("Token Limit Reached"),
3467        ),
3468        TokenState::HasMoreTokens {
3469            max_token_count,
3470            token_count,
3471            over_warn_threshold,
3472        } => {
3473            let (color, tooltip) = if over_warn_threshold {
3474                (Color::Warning, Some("Token Limit is Close to Exhaustion"))
3475            } else {
3476                (Color::Muted, None)
3477            };
3478            (color, token_count, max_token_count, tooltip)
3479        }
3480    };
3481
3482    Some(
3483        h_flex()
3484            .id("token-count")
3485            .gap_0p5()
3486            .child(
3487                Label::new(humanize_token_count(token_count))
3488                    .size(LabelSize::Small)
3489                    .color(token_count_color),
3490            )
3491            .child(Label::new("/").size(LabelSize::Small).color(Color::Muted))
3492            .child(
3493                Label::new(humanize_token_count(max_token_count))
3494                    .size(LabelSize::Small)
3495                    .color(Color::Muted),
3496            )
3497            .when_some(tooltip, |element, tooltip| {
3498                element.tooltip(Tooltip::text(tooltip))
3499            }),
3500    )
3501}
3502
3503impl Render for ContextEditorToolbarItem {
3504    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3505        let left_side = h_flex()
3506            .group("chat-title-group")
3507            .gap_1()
3508            .items_center()
3509            .flex_grow()
3510            .child(
3511                div()
3512                    .w_full()
3513                    .when(self.active_context_editor.is_some(), |left_side| {
3514                        left_side.child(self.model_summary_editor.clone())
3515                    }),
3516            )
3517            .child(
3518                div().visible_on_hover("chat-title-group").child(
3519                    IconButton::new("regenerate-context", IconName::RefreshTitle)
3520                        .shape(ui::IconButtonShape::Square)
3521                        .tooltip(Tooltip::text("Regenerate Title"))
3522                        .on_click(cx.listener(move |_, _, _window, cx| {
3523                            cx.emit(ContextEditorToolbarItemEvent::RegenerateSummary)
3524                        })),
3525                ),
3526            );
3527
3528        let right_side = h_flex()
3529            .gap_2()
3530            // TODO display this in a nicer way, once we have a design for it.
3531            // .children({
3532            //     let project = self
3533            //         .workspace
3534            //         .upgrade()
3535            //         .map(|workspace| workspace.read(cx).project().downgrade());
3536            //
3537            //     let scan_items_remaining = cx.update_global(|db: &mut SemanticDb, cx| {
3538            //         project.and_then(|project| db.remaining_summaries(&project, cx))
3539            //     });
3540            //     scan_items_remaining
3541            //         .map(|remaining_items| format!("Files to scan: {}", remaining_items))
3542            // })
3543            .children(
3544                self.active_context_editor
3545                    .as_ref()
3546                    .and_then(|editor| editor.upgrade())
3547                    .and_then(|editor| render_remaining_tokens(&editor, cx)),
3548            );
3549
3550        h_flex()
3551            .px_0p5()
3552            .size_full()
3553            .gap_2()
3554            .justify_between()
3555            .child(left_side)
3556            .child(right_side)
3557    }
3558}
3559
3560impl ToolbarItemView for ContextEditorToolbarItem {
3561    fn set_active_pane_item(
3562        &mut self,
3563        active_pane_item: Option<&dyn ItemHandle>,
3564        _window: &mut Window,
3565        cx: &mut Context<Self>,
3566    ) -> ToolbarItemLocation {
3567        self.active_context_editor = active_pane_item
3568            .and_then(|item| item.act_as::<ContextEditor>(cx))
3569            .map(|editor| editor.downgrade());
3570        cx.notify();
3571        if self.active_context_editor.is_none() {
3572            ToolbarItemLocation::Hidden
3573        } else {
3574            ToolbarItemLocation::PrimaryRight
3575        }
3576    }
3577
3578    fn pane_focus_update(
3579        &mut self,
3580        _pane_focused: bool,
3581        _window: &mut Window,
3582        cx: &mut Context<Self>,
3583    ) {
3584        cx.notify();
3585    }
3586}
3587
3588impl EventEmitter<ToolbarItemEvent> for ContextEditorToolbarItem {}
3589
3590pub enum ContextEditorToolbarItemEvent {
3591    RegenerateSummary,
3592}
3593impl EventEmitter<ContextEditorToolbarItemEvent> for ContextEditorToolbarItem {}
3594
3595enum PendingSlashCommand {}
3596
3597fn invoked_slash_command_fold_placeholder(
3598    command_id: InvokedSlashCommandId,
3599    context: WeakEntity<AssistantContext>,
3600) -> FoldPlaceholder {
3601    FoldPlaceholder {
3602        constrain_width: false,
3603        merge_adjacent: false,
3604        render: Arc::new(move |fold_id, _, cx| {
3605            let Some(context) = context.upgrade() else {
3606                return Empty.into_any();
3607            };
3608
3609            let Some(command) = context.read(cx).invoked_slash_command(&command_id) else {
3610                return Empty.into_any();
3611            };
3612
3613            h_flex()
3614                .id(fold_id)
3615                .px_1()
3616                .ml_6()
3617                .gap_2()
3618                .bg(cx.theme().colors().surface_background)
3619                .rounded_sm()
3620                .child(Label::new(format!("/{}", command.name.clone())))
3621                .map(|parent| match &command.status {
3622                    InvokedSlashCommandStatus::Running(_) => {
3623                        parent.child(Icon::new(IconName::ArrowCircle).with_animation(
3624                            "arrow-circle",
3625                            Animation::new(Duration::from_secs(4)).repeat(),
3626                            |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
3627                        ))
3628                    }
3629                    InvokedSlashCommandStatus::Error(message) => parent.child(
3630                        Label::new(format!("error: {message}"))
3631                            .single_line()
3632                            .color(Color::Error),
3633                    ),
3634                    InvokedSlashCommandStatus::Finished => parent,
3635                })
3636                .into_any_element()
3637        }),
3638        type_tag: Some(TypeId::of::<PendingSlashCommand>()),
3639    }
3640}
3641
3642enum TokenState {
3643    NoTokensLeft {
3644        max_token_count: usize,
3645        token_count: usize,
3646    },
3647    HasMoreTokens {
3648        max_token_count: usize,
3649        token_count: usize,
3650        over_warn_threshold: bool,
3651    },
3652}
3653
3654fn token_state(context: &Entity<AssistantContext>, cx: &App) -> Option<TokenState> {
3655    const WARNING_TOKEN_THRESHOLD: f32 = 0.8;
3656
3657    let model = LanguageModelRegistry::read_global(cx)
3658        .default_model()?
3659        .model;
3660    let token_count = context.read(cx).token_count()?;
3661    let max_token_count = model.max_token_count();
3662
3663    let remaining_tokens = max_token_count as isize - token_count as isize;
3664    let token_state = if remaining_tokens <= 0 {
3665        TokenState::NoTokensLeft {
3666            max_token_count,
3667            token_count,
3668        }
3669    } else {
3670        let over_warn_threshold =
3671            token_count as f32 / max_token_count as f32 >= WARNING_TOKEN_THRESHOLD;
3672        TokenState::HasMoreTokens {
3673            max_token_count,
3674            token_count,
3675            over_warn_threshold,
3676        }
3677    };
3678    Some(token_state)
3679}
3680
3681fn size_for_image(data: &RenderImage, max_size: Size<Pixels>) -> Size<Pixels> {
3682    let image_size = data
3683        .size(0)
3684        .map(|dimension| Pixels::from(u32::from(dimension)));
3685    let image_ratio = image_size.width / image_size.height;
3686    let bounds_ratio = max_size.width / max_size.height;
3687
3688    if image_size.width > max_size.width || image_size.height > max_size.height {
3689        if bounds_ratio > image_ratio {
3690            size(
3691                image_size.width * (max_size.height / image_size.height),
3692                max_size.height,
3693            )
3694        } else {
3695            size(
3696                max_size.width,
3697                image_size.height * (max_size.width / image_size.width),
3698            )
3699        }
3700    } else {
3701        size(image_size.width, image_size.height)
3702    }
3703}
3704
3705pub enum ConfigurationError {
3706    NoProvider,
3707    ProviderNotAuthenticated,
3708    ProviderPendingTermsAcceptance(Arc<dyn LanguageModelProvider>),
3709}
3710
3711fn configuration_error(cx: &App) -> Option<ConfigurationError> {
3712    let model = LanguageModelRegistry::read_global(cx).default_model();
3713    let is_authenticated = model
3714        .as_ref()
3715        .map_or(false, |model| model.provider.is_authenticated(cx));
3716
3717    if model.is_some() && is_authenticated {
3718        return None;
3719    }
3720
3721    if model.is_none() {
3722        return Some(ConfigurationError::NoProvider);
3723    }
3724
3725    if !is_authenticated {
3726        return Some(ConfigurationError::ProviderNotAuthenticated);
3727    }
3728
3729    None
3730}
3731
3732pub fn humanize_token_count(count: usize) -> String {
3733    match count {
3734        0..=999 => count.to_string(),
3735        1000..=9999 => {
3736            let thousands = count / 1000;
3737            let hundreds = (count % 1000 + 50) / 100;
3738            if hundreds == 0 {
3739                format!("{}k", thousands)
3740            } else if hundreds == 10 {
3741                format!("{}k", thousands + 1)
3742            } else {
3743                format!("{}.{}k", thousands, hundreds)
3744            }
3745        }
3746        1_000_000..=9_999_999 => {
3747            let millions = count / 1_000_000;
3748            let hundred_thousands = (count % 1_000_000 + 50_000) / 100_000;
3749            if hundred_thousands == 0 {
3750                format!("{}M", millions)
3751            } else if hundred_thousands == 10 {
3752                format!("{}M", millions + 1)
3753            } else {
3754                format!("{}.{}M", millions, hundred_thousands)
3755            }
3756        }
3757        10_000_000.. => format!("{}M", (count + 500_000) / 1_000_000),
3758        _ => format!("{}k", (count + 500) / 1000),
3759    }
3760}
3761
3762pub fn make_lsp_adapter_delegate(
3763    project: &Entity<Project>,
3764    cx: &mut App,
3765) -> Result<Option<Arc<dyn LspAdapterDelegate>>> {
3766    project.update(cx, |project, cx| {
3767        // TODO: Find the right worktree.
3768        let Some(worktree) = project.worktrees(cx).next() else {
3769            return Ok(None::<Arc<dyn LspAdapterDelegate>>);
3770        };
3771        let http_client = project.client().http_client();
3772        project.lsp_store().update(cx, |_, cx| {
3773            Ok(Some(LocalLspAdapterDelegate::new(
3774                project.languages().clone(),
3775                project.environment(),
3776                cx.weak_entity(),
3777                &worktree,
3778                http_client,
3779                project.fs().clone(),
3780                cx,
3781            ) as Arc<dyn LspAdapterDelegate>))
3782        })
3783    })
3784}
3785
3786#[cfg(test)]
3787mod tests {
3788    use super::*;
3789    use gpui::App;
3790    use language::Buffer;
3791    use unindent::Unindent;
3792
3793    #[gpui::test]
3794    fn test_find_code_blocks(cx: &mut App) {
3795        let markdown = languages::language("markdown", tree_sitter_md::LANGUAGE.into());
3796
3797        let buffer = cx.new(|cx| {
3798            let text = r#"
3799                line 0
3800                line 1
3801                ```rust
3802                fn main() {}
3803                ```
3804                line 5
3805                line 6
3806                line 7
3807                ```go
3808                func main() {}
3809                ```
3810                line 11
3811                ```
3812                this is plain text code block
3813                ```
3814
3815                ```go
3816                func another() {}
3817                ```
3818                line 19
3819            "#
3820            .unindent();
3821            let mut buffer = Buffer::local(text, cx);
3822            buffer.set_language(Some(markdown.clone()), cx);
3823            buffer
3824        });
3825        let snapshot = buffer.read(cx).snapshot();
3826
3827        let code_blocks = vec![
3828            Point::new(3, 0)..Point::new(4, 0),
3829            Point::new(9, 0)..Point::new(10, 0),
3830            Point::new(13, 0)..Point::new(14, 0),
3831            Point::new(17, 0)..Point::new(18, 0),
3832        ]
3833        .into_iter()
3834        .map(|range| snapshot.point_to_offset(range.start)..snapshot.point_to_offset(range.end))
3835        .collect::<Vec<_>>();
3836
3837        let expected_results = vec![
3838            (0, None),
3839            (1, None),
3840            (2, Some(code_blocks[0].clone())),
3841            (3, Some(code_blocks[0].clone())),
3842            (4, Some(code_blocks[0].clone())),
3843            (5, None),
3844            (6, None),
3845            (7, None),
3846            (8, Some(code_blocks[1].clone())),
3847            (9, Some(code_blocks[1].clone())),
3848            (10, Some(code_blocks[1].clone())),
3849            (11, None),
3850            (12, Some(code_blocks[2].clone())),
3851            (13, Some(code_blocks[2].clone())),
3852            (14, Some(code_blocks[2].clone())),
3853            (15, None),
3854            (16, Some(code_blocks[3].clone())),
3855            (17, Some(code_blocks[3].clone())),
3856            (18, Some(code_blocks[3].clone())),
3857            (19, None),
3858        ];
3859
3860        for (row, expected) in expected_results {
3861            let offset = snapshot.point_to_offset(Point::new(row, 0));
3862            let range = find_surrounding_code_block(&snapshot, offset);
3863            assert_eq!(range, expected, "unexpected result on row {:?}", row);
3864        }
3865    }
3866}