text_thread_editor.rs

   1use crate::{
   2    language_model_selector::{LanguageModelSelector, language_model_selector},
   3    ui::BurnModeTooltip,
   4};
   5use agent_settings::CompletionMode;
   6use anyhow::Result;
   7use assistant_slash_command::{SlashCommand, SlashCommandOutputSection, SlashCommandWorkingSet};
   8use assistant_slash_commands::{DefaultSlashCommand, FileSlashCommand, selections_creases};
   9use client::{proto, zed_urls};
  10use collections::{BTreeSet, HashMap, HashSet, hash_map};
  11use editor::{
  12    Anchor, Editor, EditorEvent, MenuEditPredictionsPolicy, MultiBuffer, MultiBufferOffset,
  13    MultiBufferSnapshot, RowExt, ToOffset as _, ToPoint,
  14    actions::{MoveToEndOfLine, Newline, ShowCompletions},
  15    display_map::{
  16        BlockPlacement, BlockProperties, BlockStyle, Crease, CreaseMetadata, CustomBlockId, FoldId,
  17        RenderBlock, ToDisplayPoint,
  18    },
  19    scroll::ScrollOffset,
  20};
  21use editor::{FoldPlaceholder, display_map::CreaseId};
  22use fs::Fs;
  23use futures::FutureExt;
  24use gpui::{
  25    Action, Animation, AnimationExt, AnyElement, App, ClipboardEntry, ClipboardItem, Empty, Entity,
  26    EventEmitter, FocusHandle, Focusable, FontWeight, Global, InteractiveElement, IntoElement,
  27    ParentElement, Pixels, Render, RenderImage, SharedString, Size, StatefulInteractiveElement,
  28    Styled, Subscription, Task, WeakEntity, actions, div, img, point, prelude::*,
  29    pulsating_between, size,
  30};
  31use language::{
  32    BufferSnapshot, LspAdapterDelegate, ToOffset,
  33    language_settings::{SoftWrap, all_language_settings},
  34};
  35use language_model::{
  36    ConfigurationError, LanguageModelExt, LanguageModelImage, LanguageModelRegistry, Role,
  37};
  38use multi_buffer::MultiBufferRow;
  39use picker::{Picker, popover_menu::PickerPopoverMenu};
  40use project::{Project, Worktree};
  41use project::{ProjectPath, lsp_store::LocalLspAdapterDelegate};
  42use rope::Point;
  43use serde::{Deserialize, Serialize};
  44use settings::{
  45    LanguageModelProviderSetting, LanguageModelSelection, Settings, SettingsStore,
  46    update_settings_file,
  47};
  48use std::{
  49    any::TypeId,
  50    cmp,
  51    ops::Range,
  52    path::{Path, PathBuf},
  53    rc::Rc,
  54    sync::Arc,
  55    time::Duration,
  56};
  57use text::SelectionGoal;
  58use ui::{
  59    ButtonLike, CommonAnimationExt, Disclosure, ElevationIndex, KeyBinding, PopoverMenuHandle,
  60    TintColor, Tooltip, prelude::*,
  61};
  62use util::{ResultExt, maybe};
  63use workspace::{
  64    CollaboratorId,
  65    searchable::{Direction, SearchableItemHandle},
  66};
  67use workspace::{
  68    Save, Toast, Workspace,
  69    item::{self, FollowableItem, Item},
  70    notifications::NotificationId,
  71    pane,
  72    searchable::{SearchEvent, SearchableItem},
  73};
  74use zed_actions::agent::{AddSelectionToThread, ToggleModelSelector};
  75
  76use crate::{slash_command::SlashCommandCompletionProvider, slash_command_picker};
  77use assistant_text_thread::{
  78    CacheStatus, Content, InvokedSlashCommandId, InvokedSlashCommandStatus, Message, MessageId,
  79    MessageMetadata, MessageStatus, PendingSlashCommandStatus, TextThread, TextThreadEvent,
  80    TextThreadId, ThoughtProcessOutputSection,
  81};
  82
  83actions!(
  84    assistant,
  85    [
  86        /// Sends the current message to the assistant.
  87        Assist,
  88        /// Confirms and executes the entered slash command.
  89        ConfirmCommand,
  90        /// Copies code from the assistant's response to the clipboard.
  91        CopyCode,
  92        /// Cycles between user and assistant message roles.
  93        CycleMessageRole,
  94        /// Inserts the selected text into the active editor.
  95        InsertIntoEditor,
  96        /// Splits the conversation at the current cursor position.
  97        Split,
  98    ]
  99);
 100
 101/// Inserts files that were dragged and dropped into the assistant conversation.
 102#[derive(PartialEq, Clone, Action)]
 103#[action(namespace = assistant, no_json, no_register)]
 104pub enum InsertDraggedFiles {
 105    ProjectPaths(Vec<ProjectPath>),
 106    ExternalFiles(Vec<PathBuf>),
 107}
 108
 109#[derive(Copy, Clone, Debug, PartialEq)]
 110struct ScrollPosition {
 111    offset_before_cursor: gpui::Point<ScrollOffset>,
 112    cursor: Anchor,
 113}
 114
 115type MessageHeader = MessageMetadata;
 116
 117#[derive(Clone)]
 118enum AssistError {
 119    PaymentRequired,
 120    Message(SharedString),
 121}
 122
 123pub enum ThoughtProcessStatus {
 124    Pending,
 125    Completed,
 126}
 127
 128pub trait AgentPanelDelegate {
 129    fn active_text_thread_editor(
 130        &self,
 131        workspace: &mut Workspace,
 132        window: &mut Window,
 133        cx: &mut Context<Workspace>,
 134    ) -> Option<Entity<TextThreadEditor>>;
 135
 136    fn open_local_text_thread(
 137        &self,
 138        workspace: &mut Workspace,
 139        path: Arc<Path>,
 140        window: &mut Window,
 141        cx: &mut Context<Workspace>,
 142    ) -> Task<Result<()>>;
 143
 144    fn open_remote_text_thread(
 145        &self,
 146        workspace: &mut Workspace,
 147        text_thread_id: TextThreadId,
 148        window: &mut Window,
 149        cx: &mut Context<Workspace>,
 150    ) -> Task<Result<Entity<TextThreadEditor>>>;
 151
 152    fn quote_selection(
 153        &self,
 154        workspace: &mut Workspace,
 155        selection_ranges: Vec<Range<Anchor>>,
 156        buffer: Entity<MultiBuffer>,
 157        window: &mut Window,
 158        cx: &mut Context<Workspace>,
 159    );
 160}
 161
 162impl dyn AgentPanelDelegate {
 163    /// Returns the global [`AssistantPanelDelegate`], if it exists.
 164    pub fn try_global(cx: &App) -> Option<Arc<Self>> {
 165        cx.try_global::<GlobalAssistantPanelDelegate>()
 166            .map(|global| global.0.clone())
 167    }
 168
 169    /// Sets the global [`AssistantPanelDelegate`].
 170    pub fn set_global(delegate: Arc<Self>, cx: &mut App) {
 171        cx.set_global(GlobalAssistantPanelDelegate(delegate));
 172    }
 173}
 174
 175struct GlobalAssistantPanelDelegate(Arc<dyn AgentPanelDelegate>);
 176
 177impl Global for GlobalAssistantPanelDelegate {}
 178
 179pub struct TextThreadEditor {
 180    text_thread: Entity<TextThread>,
 181    fs: Arc<dyn Fs>,
 182    slash_commands: Arc<SlashCommandWorkingSet>,
 183    workspace: WeakEntity<Workspace>,
 184    project: Entity<Project>,
 185    lsp_adapter_delegate: Option<Arc<dyn LspAdapterDelegate>>,
 186    editor: Entity<Editor>,
 187    pending_thought_process: Option<(CreaseId, language::Anchor)>,
 188    blocks: HashMap<MessageId, (MessageHeader, CustomBlockId)>,
 189    image_blocks: HashSet<CustomBlockId>,
 190    scroll_position: Option<ScrollPosition>,
 191    remote_id: Option<workspace::ViewId>,
 192    pending_slash_command_creases: HashMap<Range<language::Anchor>, CreaseId>,
 193    invoked_slash_command_creases: HashMap<InvokedSlashCommandId, CreaseId>,
 194    _subscriptions: Vec<Subscription>,
 195    last_error: Option<AssistError>,
 196    pub(crate) slash_menu_handle:
 197        PopoverMenuHandle<Picker<slash_command_picker::SlashCommandDelegate>>,
 198    // dragged_file_worktrees is used to keep references to worktrees that were added
 199    // when the user drag/dropped an external file onto the context editor. Since
 200    // the worktree is not part of the project panel, it would be dropped as soon as
 201    // the file is opened. In order to keep the worktree alive for the duration of the
 202    // context editor, we keep a reference here.
 203    dragged_file_worktrees: Vec<Entity<Worktree>>,
 204    language_model_selector: Entity<LanguageModelSelector>,
 205    language_model_selector_menu_handle: PopoverMenuHandle<LanguageModelSelector>,
 206}
 207
 208const MAX_TAB_TITLE_LEN: usize = 16;
 209
 210impl TextThreadEditor {
 211    pub fn init(cx: &mut App) {
 212        workspace::FollowableViewRegistry::register::<TextThreadEditor>(cx);
 213
 214        cx.observe_new(
 215            |workspace: &mut Workspace, _window, _cx: &mut Context<Workspace>| {
 216                workspace
 217                    .register_action(TextThreadEditor::quote_selection)
 218                    .register_action(TextThreadEditor::insert_selection)
 219                    .register_action(TextThreadEditor::copy_code)
 220                    .register_action(TextThreadEditor::handle_insert_dragged_files);
 221            },
 222        )
 223        .detach();
 224    }
 225
 226    pub fn for_text_thread(
 227        text_thread: Entity<TextThread>,
 228        fs: Arc<dyn Fs>,
 229        workspace: WeakEntity<Workspace>,
 230        project: Entity<Project>,
 231        lsp_adapter_delegate: Option<Arc<dyn LspAdapterDelegate>>,
 232        window: &mut Window,
 233        cx: &mut Context<Self>,
 234    ) -> Self {
 235        let completion_provider = SlashCommandCompletionProvider::new(
 236            text_thread.read(cx).slash_commands().clone(),
 237            Some(cx.entity().downgrade()),
 238            Some(workspace.clone()),
 239        );
 240
 241        let editor = cx.new(|cx| {
 242            let mut editor =
 243                Editor::for_buffer(text_thread.read(cx).buffer().clone(), None, window, cx);
 244            editor.disable_scrollbars_and_minimap(window, cx);
 245            editor.set_soft_wrap_mode(SoftWrap::EditorWidth, cx);
 246            editor.set_show_line_numbers(false, cx);
 247            editor.set_show_git_diff_gutter(false, cx);
 248            editor.set_show_code_actions(false, cx);
 249            editor.set_show_runnables(false, cx);
 250            editor.set_show_breakpoints(false, cx);
 251            editor.set_show_wrap_guides(false, cx);
 252            editor.set_show_indent_guides(false, cx);
 253            editor.set_completion_provider(Some(Rc::new(completion_provider)));
 254            editor.set_menu_edit_predictions_policy(MenuEditPredictionsPolicy::Never);
 255            editor.set_collaboration_hub(Box::new(project.clone()));
 256
 257            let show_edit_predictions = all_language_settings(None, cx)
 258                .edit_predictions
 259                .enabled_in_text_threads;
 260
 261            editor.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 262
 263            editor
 264        });
 265
 266        let _subscriptions = vec![
 267            cx.observe(&text_thread, |_, _, cx| cx.notify()),
 268            cx.subscribe_in(&text_thread, window, Self::handle_text_thread_event),
 269            cx.subscribe_in(&editor, window, Self::handle_editor_event),
 270            cx.subscribe_in(&editor, window, Self::handle_editor_search_event),
 271            cx.observe_global_in::<SettingsStore>(window, Self::settings_changed),
 272        ];
 273
 274        let slash_command_sections = text_thread
 275            .read(cx)
 276            .slash_command_output_sections()
 277            .to_vec();
 278        let thought_process_sections = text_thread
 279            .read(cx)
 280            .thought_process_output_sections()
 281            .to_vec();
 282        let slash_commands = text_thread.read(cx).slash_commands().clone();
 283        let focus_handle = editor.read(cx).focus_handle(cx);
 284
 285        let mut this = Self {
 286            text_thread,
 287            slash_commands,
 288            editor,
 289            lsp_adapter_delegate,
 290            blocks: Default::default(),
 291            image_blocks: Default::default(),
 292            scroll_position: None,
 293            remote_id: None,
 294            pending_thought_process: None,
 295            fs: fs.clone(),
 296            workspace,
 297            project,
 298            pending_slash_command_creases: HashMap::default(),
 299            invoked_slash_command_creases: HashMap::default(),
 300            _subscriptions,
 301            last_error: None,
 302            slash_menu_handle: Default::default(),
 303            dragged_file_worktrees: Vec::new(),
 304            language_model_selector: cx.new(|cx| {
 305                language_model_selector(
 306                    |cx| LanguageModelRegistry::read_global(cx).default_model(),
 307                    move |model, cx| {
 308                        update_settings_file(fs.clone(), cx, move |settings, _| {
 309                            let provider = model.provider_id().0.to_string();
 310                            let model = model.id().0.to_string();
 311                            settings.agent.get_or_insert_default().set_model(
 312                                LanguageModelSelection {
 313                                    provider: LanguageModelProviderSetting(provider),
 314                                    model,
 315                                },
 316                            )
 317                        });
 318                    },
 319                    true, // Use popover styles for picker
 320                    focus_handle,
 321                    window,
 322                    cx,
 323                )
 324            }),
 325            language_model_selector_menu_handle: PopoverMenuHandle::default(),
 326        };
 327        this.update_message_headers(cx);
 328        this.update_image_blocks(cx);
 329        this.insert_slash_command_output_sections(slash_command_sections, false, window, cx);
 330        this.insert_thought_process_output_sections(
 331            thought_process_sections
 332                .into_iter()
 333                .map(|section| (section, ThoughtProcessStatus::Completed)),
 334            window,
 335            cx,
 336        );
 337        this
 338    }
 339
 340    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 341        self.editor.update(cx, |editor, cx| {
 342            let show_edit_predictions = all_language_settings(None, cx)
 343                .edit_predictions
 344                .enabled_in_text_threads;
 345
 346            editor.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 347        });
 348    }
 349
 350    pub fn text_thread(&self) -> &Entity<TextThread> {
 351        &self.text_thread
 352    }
 353
 354    pub fn editor(&self) -> &Entity<Editor> {
 355        &self.editor
 356    }
 357
 358    pub fn insert_default_prompt(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 359        let command_name = DefaultSlashCommand.name();
 360        self.editor.update(cx, |editor, cx| {
 361            editor.insert(&format!("/{command_name}\n\n"), window, cx)
 362        });
 363        let command = self.text_thread.update(cx, |text_thread, cx| {
 364            text_thread.reparse(cx);
 365            text_thread.parsed_slash_commands()[0].clone()
 366        });
 367        self.run_command(
 368            command.source_range,
 369            &command.name,
 370            &command.arguments,
 371            false,
 372            self.workspace.clone(),
 373            window,
 374            cx,
 375        );
 376    }
 377
 378    fn assist(&mut self, _: &Assist, window: &mut Window, cx: &mut Context<Self>) {
 379        if self.sending_disabled(cx) {
 380            return;
 381        }
 382        telemetry::event!("Agent Message Sent", agent = "zed-text");
 383        self.send_to_model(window, cx);
 384    }
 385
 386    fn send_to_model(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 387        self.last_error = None;
 388        if let Some(user_message) = self
 389            .text_thread
 390            .update(cx, |text_thread, cx| text_thread.assist(cx))
 391        {
 392            let new_selection = {
 393                let cursor = user_message
 394                    .start
 395                    .to_offset(self.text_thread.read(cx).buffer().read(cx));
 396                MultiBufferOffset(cursor)..MultiBufferOffset(cursor)
 397            };
 398            self.editor.update(cx, |editor, cx| {
 399                editor.change_selections(Default::default(), window, cx, |selections| {
 400                    selections.select_ranges([new_selection])
 401                });
 402            });
 403            // Avoid scrolling to the new cursor position so the assistant's output is stable.
 404            cx.defer_in(window, |this, _, _| this.scroll_position = None);
 405        }
 406
 407        cx.notify();
 408    }
 409
 410    fn cancel(
 411        &mut self,
 412        _: &editor::actions::Cancel,
 413        _window: &mut Window,
 414        cx: &mut Context<Self>,
 415    ) {
 416        self.last_error = None;
 417
 418        if self
 419            .text_thread
 420            .update(cx, |text_thread, cx| text_thread.cancel_last_assist(cx))
 421        {
 422            return;
 423        }
 424
 425        cx.propagate();
 426    }
 427
 428    fn cycle_message_role(
 429        &mut self,
 430        _: &CycleMessageRole,
 431        _window: &mut Window,
 432        cx: &mut Context<Self>,
 433    ) {
 434        let cursors = self.cursors(cx);
 435        self.text_thread.update(cx, |text_thread, cx| {
 436            let messages = text_thread
 437                .messages_for_offsets(cursors.into_iter().map(|cursor| cursor.0), cx)
 438                .into_iter()
 439                .map(|message| message.id)
 440                .collect();
 441            text_thread.cycle_message_roles(messages, cx)
 442        });
 443    }
 444
 445    fn cursors(&self, cx: &mut App) -> Vec<MultiBufferOffset> {
 446        let selections = self.editor.update(cx, |editor, cx| {
 447            editor
 448                .selections
 449                .all::<MultiBufferOffset>(&editor.display_snapshot(cx))
 450        });
 451        selections
 452            .into_iter()
 453            .map(|selection| selection.head())
 454            .collect()
 455    }
 456
 457    pub fn insert_command(&mut self, name: &str, window: &mut Window, cx: &mut Context<Self>) {
 458        if let Some(command) = self.slash_commands.command(name, cx) {
 459            self.editor.update(cx, |editor, cx| {
 460                editor.transact(window, cx, |editor, window, cx| {
 461                    editor.change_selections(Default::default(), window, cx, |s| s.try_cancel());
 462                    let snapshot = editor.buffer().read(cx).snapshot(cx);
 463                    let newest_cursor = editor
 464                        .selections
 465                        .newest::<Point>(&editor.display_snapshot(cx))
 466                        .head();
 467                    if newest_cursor.column > 0
 468                        || snapshot
 469                            .chars_at(newest_cursor)
 470                            .next()
 471                            .is_some_and(|ch| ch != '\n')
 472                    {
 473                        editor.move_to_end_of_line(
 474                            &MoveToEndOfLine {
 475                                stop_at_soft_wraps: false,
 476                            },
 477                            window,
 478                            cx,
 479                        );
 480                        editor.newline(&Newline, window, cx);
 481                    }
 482
 483                    editor.insert(&format!("/{name}"), window, cx);
 484                    if command.accepts_arguments() {
 485                        editor.insert(" ", window, cx);
 486                        editor.show_completions(&ShowCompletions, window, cx);
 487                    }
 488                });
 489            });
 490            if !command.requires_argument() {
 491                self.confirm_command(&ConfirmCommand, window, cx);
 492            }
 493        }
 494    }
 495
 496    pub fn confirm_command(
 497        &mut self,
 498        _: &ConfirmCommand,
 499        window: &mut Window,
 500        cx: &mut Context<Self>,
 501    ) {
 502        if self.editor.read(cx).has_visible_completions_menu() {
 503            return;
 504        }
 505
 506        let selections = self.editor.read(cx).selections.disjoint_anchors_arc();
 507        let mut commands_by_range = HashMap::default();
 508        let workspace = self.workspace.clone();
 509        self.text_thread.update(cx, |text_thread, cx| {
 510            text_thread.reparse(cx);
 511            for selection in selections.iter() {
 512                if let Some(command) =
 513                    text_thread.pending_command_for_position(selection.head().text_anchor, cx)
 514                {
 515                    commands_by_range
 516                        .entry(command.source_range.clone())
 517                        .or_insert_with(|| command.clone());
 518                }
 519            }
 520        });
 521
 522        if commands_by_range.is_empty() {
 523            cx.propagate();
 524        } else {
 525            for command in commands_by_range.into_values() {
 526                self.run_command(
 527                    command.source_range,
 528                    &command.name,
 529                    &command.arguments,
 530                    true,
 531                    workspace.clone(),
 532                    window,
 533                    cx,
 534                );
 535            }
 536            cx.stop_propagation();
 537        }
 538    }
 539
 540    pub fn run_command(
 541        &mut self,
 542        command_range: Range<language::Anchor>,
 543        name: &str,
 544        arguments: &[String],
 545        ensure_trailing_newline: bool,
 546        workspace: WeakEntity<Workspace>,
 547        window: &mut Window,
 548        cx: &mut Context<Self>,
 549    ) {
 550        if let Some(command) = self.slash_commands.command(name, cx) {
 551            let text_thread = self.text_thread.read(cx);
 552            let sections = text_thread
 553                .slash_command_output_sections()
 554                .iter()
 555                .filter(|section| section.is_valid(text_thread.buffer().read(cx)))
 556                .cloned()
 557                .collect::<Vec<_>>();
 558            let snapshot = text_thread.buffer().read(cx).snapshot();
 559            let output = command.run(
 560                arguments,
 561                &sections,
 562                snapshot,
 563                workspace,
 564                self.lsp_adapter_delegate.clone(),
 565                window,
 566                cx,
 567            );
 568            self.text_thread.update(cx, |text_thread, cx| {
 569                text_thread.insert_command_output(
 570                    command_range,
 571                    name,
 572                    output,
 573                    ensure_trailing_newline,
 574                    cx,
 575                )
 576            });
 577        }
 578    }
 579
 580    fn handle_text_thread_event(
 581        &mut self,
 582        _: &Entity<TextThread>,
 583        event: &TextThreadEvent,
 584        window: &mut Window,
 585        cx: &mut Context<Self>,
 586    ) {
 587        let text_thread_editor = cx.entity().downgrade();
 588
 589        match event {
 590            TextThreadEvent::MessagesEdited => {
 591                self.update_message_headers(cx);
 592                self.update_image_blocks(cx);
 593                self.text_thread.update(cx, |text_thread, cx| {
 594                    text_thread.save(Some(Duration::from_millis(500)), self.fs.clone(), cx);
 595                });
 596            }
 597            TextThreadEvent::SummaryChanged => {
 598                cx.emit(EditorEvent::TitleChanged);
 599                self.text_thread.update(cx, |text_thread, cx| {
 600                    text_thread.save(Some(Duration::from_millis(500)), self.fs.clone(), cx);
 601                });
 602            }
 603            TextThreadEvent::SummaryGenerated => {}
 604            TextThreadEvent::PathChanged { .. } => {}
 605            TextThreadEvent::StartedThoughtProcess(range) => {
 606                let creases = self.insert_thought_process_output_sections(
 607                    [(
 608                        ThoughtProcessOutputSection {
 609                            range: range.clone(),
 610                        },
 611                        ThoughtProcessStatus::Pending,
 612                    )],
 613                    window,
 614                    cx,
 615                );
 616                self.pending_thought_process = Some((creases[0], range.start));
 617            }
 618            TextThreadEvent::EndedThoughtProcess(end) => {
 619                if let Some((crease_id, start)) = self.pending_thought_process.take() {
 620                    self.editor.update(cx, |editor, cx| {
 621                        let multi_buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
 622                        let start_anchor =
 623                            multi_buffer_snapshot.as_singleton_anchor(start).unwrap();
 624
 625                        editor.display_map.update(cx, |display_map, cx| {
 626                            display_map.unfold_intersecting(
 627                                vec![start_anchor..start_anchor],
 628                                true,
 629                                cx,
 630                            );
 631                        });
 632                        editor.remove_creases(vec![crease_id], cx);
 633                    });
 634                    self.insert_thought_process_output_sections(
 635                        [(
 636                            ThoughtProcessOutputSection { range: start..*end },
 637                            ThoughtProcessStatus::Completed,
 638                        )],
 639                        window,
 640                        cx,
 641                    );
 642                }
 643            }
 644            TextThreadEvent::StreamedCompletion => {
 645                self.editor.update(cx, |editor, cx| {
 646                    if let Some(scroll_position) = self.scroll_position {
 647                        let snapshot = editor.snapshot(window, cx);
 648                        let cursor_point = scroll_position.cursor.to_display_point(&snapshot);
 649                        let scroll_top =
 650                            cursor_point.row().as_f64() - scroll_position.offset_before_cursor.y;
 651                        editor.set_scroll_position(
 652                            point(scroll_position.offset_before_cursor.x, scroll_top),
 653                            window,
 654                            cx,
 655                        );
 656                    }
 657                });
 658            }
 659            TextThreadEvent::ParsedSlashCommandsUpdated { removed, updated } => {
 660                self.editor.update(cx, |editor, cx| {
 661                    let buffer = editor.buffer().read(cx).snapshot(cx);
 662                    let (&excerpt_id, _, _) = buffer.as_singleton().unwrap();
 663
 664                    editor.remove_creases(
 665                        removed
 666                            .iter()
 667                            .filter_map(|range| self.pending_slash_command_creases.remove(range)),
 668                        cx,
 669                    );
 670
 671                    let crease_ids = editor.insert_creases(
 672                        updated.iter().map(|command| {
 673                            let workspace = self.workspace.clone();
 674                            let confirm_command = Arc::new({
 675                                let text_thread_editor = text_thread_editor.clone();
 676                                let command = command.clone();
 677                                move |window: &mut Window, cx: &mut App| {
 678                                    text_thread_editor
 679                                        .update(cx, |text_thread_editor, cx| {
 680                                            text_thread_editor.run_command(
 681                                                command.source_range.clone(),
 682                                                &command.name,
 683                                                &command.arguments,
 684                                                false,
 685                                                workspace.clone(),
 686                                                window,
 687                                                cx,
 688                                            );
 689                                        })
 690                                        .ok();
 691                                }
 692                            });
 693                            let placeholder = FoldPlaceholder {
 694                                render: Arc::new(move |_, _, _| Empty.into_any()),
 695                                ..Default::default()
 696                            };
 697                            let render_toggle = {
 698                                let confirm_command = confirm_command.clone();
 699                                let command = command.clone();
 700                                move |row, _, _, _window: &mut Window, _cx: &mut App| {
 701                                    render_pending_slash_command_gutter_decoration(
 702                                        row,
 703                                        &command.status,
 704                                        confirm_command.clone(),
 705                                    )
 706                                }
 707                            };
 708                            let render_trailer = {
 709                                move |_row, _unfold, _window: &mut Window, _cx: &mut App| {
 710                                    Empty.into_any()
 711                                }
 712                            };
 713
 714                            let range = buffer
 715                                .anchor_range_in_excerpt(excerpt_id, command.source_range.clone())
 716                                .unwrap();
 717                            Crease::inline(range, placeholder, render_toggle, render_trailer)
 718                        }),
 719                        cx,
 720                    );
 721
 722                    self.pending_slash_command_creases.extend(
 723                        updated
 724                            .iter()
 725                            .map(|command| command.source_range.clone())
 726                            .zip(crease_ids),
 727                    );
 728                })
 729            }
 730            TextThreadEvent::InvokedSlashCommandChanged { command_id } => {
 731                self.update_invoked_slash_command(*command_id, window, cx);
 732            }
 733            TextThreadEvent::SlashCommandOutputSectionAdded { section } => {
 734                self.insert_slash_command_output_sections([section.clone()], false, window, cx);
 735            }
 736            TextThreadEvent::Operation(_) => {}
 737            TextThreadEvent::ShowAssistError(error_message) => {
 738                self.last_error = Some(AssistError::Message(error_message.clone()));
 739            }
 740            TextThreadEvent::ShowPaymentRequiredError => {
 741                self.last_error = Some(AssistError::PaymentRequired);
 742            }
 743        }
 744    }
 745
 746    fn update_invoked_slash_command(
 747        &mut self,
 748        command_id: InvokedSlashCommandId,
 749        window: &mut Window,
 750        cx: &mut Context<Self>,
 751    ) {
 752        if let Some(invoked_slash_command) =
 753            self.text_thread.read(cx).invoked_slash_command(&command_id)
 754            && let InvokedSlashCommandStatus::Finished = invoked_slash_command.status
 755        {
 756            let run_commands_in_ranges = invoked_slash_command.run_commands_in_ranges.clone();
 757            for range in run_commands_in_ranges {
 758                let commands = self.text_thread.update(cx, |text_thread, cx| {
 759                    text_thread.reparse(cx);
 760                    text_thread
 761                        .pending_commands_for_range(range.clone(), cx)
 762                        .to_vec()
 763                });
 764
 765                for command in commands {
 766                    self.run_command(
 767                        command.source_range,
 768                        &command.name,
 769                        &command.arguments,
 770                        false,
 771                        self.workspace.clone(),
 772                        window,
 773                        cx,
 774                    );
 775                }
 776            }
 777        }
 778
 779        self.editor.update(cx, |editor, cx| {
 780            if let Some(invoked_slash_command) =
 781                self.text_thread.read(cx).invoked_slash_command(&command_id)
 782            {
 783                if let InvokedSlashCommandStatus::Finished = invoked_slash_command.status {
 784                    let buffer = editor.buffer().read(cx).snapshot(cx);
 785                    let (&excerpt_id, _buffer_id, _buffer_snapshot) =
 786                        buffer.as_singleton().unwrap();
 787
 788                    let range = buffer
 789                        .anchor_range_in_excerpt(excerpt_id, invoked_slash_command.range.clone())
 790                        .unwrap();
 791                    editor.remove_folds_with_type(
 792                        &[range],
 793                        TypeId::of::<PendingSlashCommand>(),
 794                        false,
 795                        cx,
 796                    );
 797
 798                    editor.remove_creases(
 799                        HashSet::from_iter(self.invoked_slash_command_creases.remove(&command_id)),
 800                        cx,
 801                    );
 802                } else if let hash_map::Entry::Vacant(entry) =
 803                    self.invoked_slash_command_creases.entry(command_id)
 804                {
 805                    let buffer = editor.buffer().read(cx).snapshot(cx);
 806                    let (&excerpt_id, _buffer_id, _buffer_snapshot) =
 807                        buffer.as_singleton().unwrap();
 808                    let context = self.text_thread.downgrade();
 809                    let range = buffer
 810                        .anchor_range_in_excerpt(excerpt_id, invoked_slash_command.range.clone())
 811                        .unwrap();
 812                    let crease = Crease::inline(
 813                        range,
 814                        invoked_slash_command_fold_placeholder(command_id, context),
 815                        fold_toggle("invoked-slash-command"),
 816                        |_row, _folded, _window, _cx| Empty.into_any(),
 817                    );
 818                    let crease_ids = editor.insert_creases([crease.clone()], cx);
 819                    editor.fold_creases(vec![crease], false, window, cx);
 820                    entry.insert(crease_ids[0]);
 821                } else {
 822                    cx.notify()
 823                }
 824            } else {
 825                editor.remove_creases(
 826                    HashSet::from_iter(self.invoked_slash_command_creases.remove(&command_id)),
 827                    cx,
 828                );
 829                cx.notify();
 830            };
 831        });
 832    }
 833
 834    fn insert_thought_process_output_sections(
 835        &mut self,
 836        sections: impl IntoIterator<
 837            Item = (
 838                ThoughtProcessOutputSection<language::Anchor>,
 839                ThoughtProcessStatus,
 840            ),
 841        >,
 842        window: &mut Window,
 843        cx: &mut Context<Self>,
 844    ) -> Vec<CreaseId> {
 845        self.editor.update(cx, |editor, cx| {
 846            let buffer = editor.buffer().read(cx).snapshot(cx);
 847            let excerpt_id = *buffer.as_singleton().unwrap().0;
 848            let mut buffer_rows_to_fold = BTreeSet::new();
 849            let mut creases = Vec::new();
 850            for (section, status) in sections {
 851                let range = buffer
 852                    .anchor_range_in_excerpt(excerpt_id, section.range)
 853                    .unwrap();
 854                let buffer_row = MultiBufferRow(range.start.to_point(&buffer).row);
 855                buffer_rows_to_fold.insert(buffer_row);
 856                creases.push(
 857                    Crease::inline(
 858                        range,
 859                        FoldPlaceholder {
 860                            render: render_thought_process_fold_icon_button(
 861                                cx.entity().downgrade(),
 862                                status,
 863                            ),
 864                            merge_adjacent: false,
 865                            ..Default::default()
 866                        },
 867                        render_slash_command_output_toggle,
 868                        |_, _, _, _| Empty.into_any_element(),
 869                    )
 870                    .with_metadata(CreaseMetadata {
 871                        icon_path: SharedString::from(IconName::Ai.path()),
 872                        label: "Thinking Process".into(),
 873                    }),
 874                );
 875            }
 876
 877            let creases = editor.insert_creases(creases, cx);
 878
 879            for buffer_row in buffer_rows_to_fold.into_iter().rev() {
 880                editor.fold_at(buffer_row, window, cx);
 881            }
 882
 883            creases
 884        })
 885    }
 886
 887    fn insert_slash_command_output_sections(
 888        &mut self,
 889        sections: impl IntoIterator<Item = SlashCommandOutputSection<language::Anchor>>,
 890        expand_result: bool,
 891        window: &mut Window,
 892        cx: &mut Context<Self>,
 893    ) {
 894        self.editor.update(cx, |editor, cx| {
 895            let buffer = editor.buffer().read(cx).snapshot(cx);
 896            let excerpt_id = *buffer.as_singleton().unwrap().0;
 897            let mut buffer_rows_to_fold = BTreeSet::new();
 898            let mut creases = Vec::new();
 899            for section in sections {
 900                let range = buffer
 901                    .anchor_range_in_excerpt(excerpt_id, section.range)
 902                    .unwrap();
 903                let buffer_row = MultiBufferRow(range.start.to_point(&buffer).row);
 904                buffer_rows_to_fold.insert(buffer_row);
 905                creases.push(
 906                    Crease::inline(
 907                        range,
 908                        FoldPlaceholder {
 909                            render: render_fold_icon_button(
 910                                cx.entity().downgrade(),
 911                                section.icon.path().into(),
 912                                section.label.clone(),
 913                            ),
 914                            merge_adjacent: false,
 915                            ..Default::default()
 916                        },
 917                        render_slash_command_output_toggle,
 918                        |_, _, _, _| Empty.into_any_element(),
 919                    )
 920                    .with_metadata(CreaseMetadata {
 921                        icon_path: section.icon.path().into(),
 922                        label: section.label,
 923                    }),
 924                );
 925            }
 926
 927            editor.insert_creases(creases, cx);
 928
 929            if expand_result {
 930                buffer_rows_to_fold.clear();
 931            }
 932            for buffer_row in buffer_rows_to_fold.into_iter().rev() {
 933                editor.fold_at(buffer_row, window, cx);
 934            }
 935        });
 936    }
 937
 938    fn handle_editor_event(
 939        &mut self,
 940        _: &Entity<Editor>,
 941        event: &EditorEvent,
 942        window: &mut Window,
 943        cx: &mut Context<Self>,
 944    ) {
 945        match event {
 946            EditorEvent::ScrollPositionChanged { autoscroll, .. } => {
 947                let cursor_scroll_position = self.cursor_scroll_position(window, cx);
 948                if *autoscroll {
 949                    self.scroll_position = cursor_scroll_position;
 950                } else if self.scroll_position != cursor_scroll_position {
 951                    self.scroll_position = None;
 952                }
 953            }
 954            EditorEvent::SelectionsChanged { .. } => {
 955                self.scroll_position = self.cursor_scroll_position(window, cx);
 956            }
 957            _ => {}
 958        }
 959        cx.emit(event.clone());
 960    }
 961
 962    fn handle_editor_search_event(
 963        &mut self,
 964        _: &Entity<Editor>,
 965        event: &SearchEvent,
 966        _window: &mut Window,
 967        cx: &mut Context<Self>,
 968    ) {
 969        cx.emit(event.clone());
 970    }
 971
 972    fn cursor_scroll_position(
 973        &self,
 974        window: &mut Window,
 975        cx: &mut Context<Self>,
 976    ) -> Option<ScrollPosition> {
 977        self.editor.update(cx, |editor, cx| {
 978            let snapshot = editor.snapshot(window, cx);
 979            let cursor = editor.selections.newest_anchor().head();
 980            let cursor_row = cursor
 981                .to_display_point(&snapshot.display_snapshot)
 982                .row()
 983                .as_f64();
 984            let scroll_position = editor
 985                .scroll_manager
 986                .anchor()
 987                .scroll_position(&snapshot.display_snapshot);
 988
 989            let scroll_bottom = scroll_position.y + editor.visible_line_count().unwrap_or(0.);
 990            if (scroll_position.y..scroll_bottom).contains(&cursor_row) {
 991                Some(ScrollPosition {
 992                    cursor,
 993                    offset_before_cursor: point(scroll_position.x, cursor_row - scroll_position.y),
 994                })
 995            } else {
 996                None
 997            }
 998        })
 999    }
1000
1001    fn esc_kbd(cx: &App) -> Div {
1002        let colors = cx.theme().colors().clone();
1003
1004        h_flex()
1005            .items_center()
1006            .gap_1()
1007            .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
1008            .text_size(TextSize::XSmall.rems(cx))
1009            .text_color(colors.text_muted)
1010            .child("Press")
1011            .child(
1012                h_flex()
1013                    .rounded_sm()
1014                    .px_1()
1015                    .mr_0p5()
1016                    .border_1()
1017                    .border_color(colors.border_variant.alpha(0.6))
1018                    .bg(colors.element_background.alpha(0.6))
1019                    .child("esc"),
1020            )
1021            .child("to cancel")
1022    }
1023
1024    fn update_message_headers(&mut self, cx: &mut Context<Self>) {
1025        self.editor.update(cx, |editor, cx| {
1026            let buffer = editor.buffer().read(cx).snapshot(cx);
1027
1028            let excerpt_id = *buffer.as_singleton().unwrap().0;
1029            let mut old_blocks = std::mem::take(&mut self.blocks);
1030            let mut blocks_to_remove: HashMap<_, _> = old_blocks
1031                .iter()
1032                .map(|(message_id, (_, block_id))| (*message_id, *block_id))
1033                .collect();
1034            let mut blocks_to_replace: HashMap<_, RenderBlock> = Default::default();
1035
1036            let render_block = |message: MessageMetadata| -> RenderBlock {
1037                Arc::new({
1038                    let text_thread = self.text_thread.clone();
1039
1040                    move |cx| {
1041                        let message_id = MessageId(message.timestamp);
1042                        let llm_loading = message.role == Role::Assistant
1043                            && message.status == MessageStatus::Pending;
1044
1045                        let (label, spinner, note) = match message.role {
1046                            Role::User => (
1047                                Label::new("You").color(Color::Default).into_any_element(),
1048                                None,
1049                                None,
1050                            ),
1051                            Role::Assistant => {
1052                                let base_label = Label::new("Agent").color(Color::Info);
1053                                let mut spinner = None;
1054                                let mut note = None;
1055                                let animated_label = if llm_loading {
1056                                    base_label
1057                                        .with_animation(
1058                                            "pulsating-label",
1059                                            Animation::new(Duration::from_secs(2))
1060                                                .repeat()
1061                                                .with_easing(pulsating_between(0.4, 0.8)),
1062                                            |label, delta| label.alpha(delta),
1063                                        )
1064                                        .into_any_element()
1065                                } else {
1066                                    base_label.into_any_element()
1067                                };
1068                                if llm_loading {
1069                                    spinner = Some(
1070                                        Icon::new(IconName::ArrowCircle)
1071                                            .size(IconSize::XSmall)
1072                                            .color(Color::Info)
1073                                            .with_rotate_animation(2)
1074                                            .into_any_element(),
1075                                    );
1076                                    note = Some(Self::esc_kbd(cx).into_any_element());
1077                                }
1078                                (animated_label, spinner, note)
1079                            }
1080                            Role::System => (
1081                                Label::new("System")
1082                                    .color(Color::Warning)
1083                                    .into_any_element(),
1084                                None,
1085                                None,
1086                            ),
1087                        };
1088
1089                        let sender = h_flex()
1090                            .items_center()
1091                            .gap_2p5()
1092                            .child(
1093                                ButtonLike::new("role")
1094                                    .style(ButtonStyle::Filled)
1095                                    .child(
1096                                        h_flex()
1097                                            .items_center()
1098                                            .gap_1p5()
1099                                            .child(label)
1100                                            .children(spinner),
1101                                    )
1102                                    .tooltip(|_window, cx| {
1103                                        Tooltip::with_meta(
1104                                            "Toggle message role",
1105                                            None,
1106                                            "Available roles: You (User), Agent, System",
1107                                            cx,
1108                                        )
1109                                    })
1110                                    .on_click({
1111                                        let text_thread = text_thread.clone();
1112                                        move |_, _window, cx| {
1113                                            text_thread.update(cx, |text_thread, cx| {
1114                                                text_thread.cycle_message_roles(
1115                                                    HashSet::from_iter(Some(message_id)),
1116                                                    cx,
1117                                                )
1118                                            })
1119                                        }
1120                                    }),
1121                            )
1122                            .children(note);
1123
1124                        h_flex()
1125                            .id(("message_header", message_id.as_u64()))
1126                            .pl(cx.margins.gutter.full_width())
1127                            .h_11()
1128                            .w_full()
1129                            .relative()
1130                            .gap_1p5()
1131                            .child(sender)
1132                            .children(match &message.cache {
1133                                Some(cache) if cache.is_final_anchor => match cache.status {
1134                                    CacheStatus::Cached => Some(
1135                                        div()
1136                                            .id("cached")
1137                                            .child(
1138                                                Icon::new(IconName::DatabaseZap)
1139                                                    .size(IconSize::XSmall)
1140                                                    .color(Color::Hint),
1141                                            )
1142                                            .tooltip(|_window, cx| {
1143                                                Tooltip::with_meta(
1144                                                    "Context Cached",
1145                                                    None,
1146                                                    "Large messages cached to optimize performance",
1147                                                    cx,
1148                                                )
1149                                            })
1150                                            .into_any_element(),
1151                                    ),
1152                                    CacheStatus::Pending => Some(
1153                                        div()
1154                                            .child(
1155                                                Icon::new(IconName::Ellipsis)
1156                                                    .size(IconSize::XSmall)
1157                                                    .color(Color::Hint),
1158                                            )
1159                                            .into_any_element(),
1160                                    ),
1161                                },
1162                                _ => None,
1163                            })
1164                            .children(match &message.status {
1165                                MessageStatus::Error(error) => Some(
1166                                    Button::new("show-error", "Error")
1167                                        .color(Color::Error)
1168                                        .selected_label_color(Color::Error)
1169                                        .selected_icon_color(Color::Error)
1170                                        .icon(IconName::XCircle)
1171                                        .icon_color(Color::Error)
1172                                        .icon_size(IconSize::XSmall)
1173                                        .icon_position(IconPosition::Start)
1174                                        .tooltip(Tooltip::text("View Details"))
1175                                        .on_click({
1176                                            let text_thread = text_thread.clone();
1177                                            let error = error.clone();
1178                                            move |_, _window, cx| {
1179                                                text_thread.update(cx, |_, cx| {
1180                                                    cx.emit(TextThreadEvent::ShowAssistError(
1181                                                        error.clone(),
1182                                                    ));
1183                                                });
1184                                            }
1185                                        })
1186                                        .into_any_element(),
1187                                ),
1188                                MessageStatus::Canceled => Some(
1189                                    h_flex()
1190                                        .gap_1()
1191                                        .items_center()
1192                                        .child(
1193                                            Icon::new(IconName::XCircle)
1194                                                .color(Color::Disabled)
1195                                                .size(IconSize::XSmall),
1196                                        )
1197                                        .child(
1198                                            Label::new("Canceled")
1199                                                .size(LabelSize::Small)
1200                                                .color(Color::Disabled),
1201                                        )
1202                                        .into_any_element(),
1203                                ),
1204                                _ => None,
1205                            })
1206                            .into_any_element()
1207                    }
1208                })
1209            };
1210            let create_block_properties = |message: &Message| BlockProperties {
1211                height: Some(2),
1212                style: BlockStyle::Sticky,
1213                placement: BlockPlacement::Above(
1214                    buffer
1215                        .anchor_in_excerpt(excerpt_id, message.anchor_range.start)
1216                        .unwrap(),
1217                ),
1218                priority: usize::MAX,
1219                render: render_block(MessageMetadata::from(message)),
1220            };
1221            let mut new_blocks = vec![];
1222            let mut block_index_to_message = vec![];
1223            for message in self.text_thread.read(cx).messages(cx) {
1224                if blocks_to_remove.remove(&message.id).is_some() {
1225                    // This is an old message that we might modify.
1226                    let Some((meta, block_id)) = old_blocks.get_mut(&message.id) else {
1227                        debug_assert!(
1228                            false,
1229                            "old_blocks should contain a message_id we've just removed."
1230                        );
1231                        continue;
1232                    };
1233                    // Should we modify it?
1234                    let message_meta = MessageMetadata::from(&message);
1235                    if meta != &message_meta {
1236                        blocks_to_replace.insert(*block_id, render_block(message_meta.clone()));
1237                        *meta = message_meta;
1238                    }
1239                } else {
1240                    // This is a new message.
1241                    new_blocks.push(create_block_properties(&message));
1242                    block_index_to_message.push((message.id, MessageMetadata::from(&message)));
1243                }
1244            }
1245            editor.replace_blocks(blocks_to_replace, None, cx);
1246            editor.remove_blocks(blocks_to_remove.into_values().collect(), None, cx);
1247
1248            let ids = editor.insert_blocks(new_blocks, None, cx);
1249            old_blocks.extend(ids.into_iter().zip(block_index_to_message).map(
1250                |(block_id, (message_id, message_meta))| (message_id, (message_meta, block_id)),
1251            ));
1252            self.blocks = old_blocks;
1253        });
1254    }
1255
1256    /// Returns either the selected text, or the content of the Markdown code
1257    /// block surrounding the cursor.
1258    fn get_selection_or_code_block(
1259        context_editor_view: &Entity<TextThreadEditor>,
1260        cx: &mut Context<Workspace>,
1261    ) -> Option<(String, bool)> {
1262        const CODE_FENCE_DELIMITER: &str = "```";
1263
1264        let text_thread_editor = context_editor_view.read(cx).editor.clone();
1265        text_thread_editor.update(cx, |text_thread_editor, cx| {
1266            let display_map = text_thread_editor.display_snapshot(cx);
1267            if text_thread_editor
1268                .selections
1269                .newest::<Point>(&display_map)
1270                .is_empty()
1271            {
1272                let snapshot = text_thread_editor.buffer().read(cx).snapshot(cx);
1273                let (_, _, snapshot) = snapshot.as_singleton()?;
1274
1275                let head = text_thread_editor
1276                    .selections
1277                    .newest::<Point>(&display_map)
1278                    .head();
1279                let offset = snapshot.point_to_offset(head);
1280
1281                let surrounding_code_block_range = find_surrounding_code_block(snapshot, offset)?;
1282                let mut text = snapshot
1283                    .text_for_range(surrounding_code_block_range)
1284                    .collect::<String>();
1285
1286                // If there is no newline trailing the closing three-backticks, then
1287                // tree-sitter-md extends the range of the content node to include
1288                // the backticks.
1289                if text.ends_with(CODE_FENCE_DELIMITER) {
1290                    text.drain((text.len() - CODE_FENCE_DELIMITER.len())..);
1291                }
1292
1293                (!text.is_empty()).then_some((text, true))
1294            } else {
1295                let selection = text_thread_editor.selections.newest_adjusted(&display_map);
1296                let buffer = text_thread_editor.buffer().read(cx).snapshot(cx);
1297                let selected_text = buffer.text_for_range(selection.range()).collect::<String>();
1298
1299                (!selected_text.is_empty()).then_some((selected_text, false))
1300            }
1301        })
1302    }
1303
1304    pub fn insert_selection(
1305        workspace: &mut Workspace,
1306        _: &InsertIntoEditor,
1307        window: &mut Window,
1308        cx: &mut Context<Workspace>,
1309    ) {
1310        let Some(agent_panel_delegate) = <dyn AgentPanelDelegate>::try_global(cx) else {
1311            return;
1312        };
1313        let Some(context_editor_view) =
1314            agent_panel_delegate.active_text_thread_editor(workspace, window, cx)
1315        else {
1316            return;
1317        };
1318        let Some(active_editor_view) = workspace
1319            .active_item(cx)
1320            .and_then(|item| item.act_as::<Editor>(cx))
1321        else {
1322            return;
1323        };
1324
1325        if let Some((text, _)) = Self::get_selection_or_code_block(&context_editor_view, cx) {
1326            active_editor_view.update(cx, |editor, cx| {
1327                editor.insert(&text, window, cx);
1328                editor.focus_handle(cx).focus(window);
1329            })
1330        }
1331    }
1332
1333    pub fn copy_code(
1334        workspace: &mut Workspace,
1335        _: &CopyCode,
1336        window: &mut Window,
1337        cx: &mut Context<Workspace>,
1338    ) {
1339        let result = maybe!({
1340            let agent_panel_delegate = <dyn AgentPanelDelegate>::try_global(cx)?;
1341            let context_editor_view =
1342                agent_panel_delegate.active_text_thread_editor(workspace, window, cx)?;
1343            Self::get_selection_or_code_block(&context_editor_view, cx)
1344        });
1345        let Some((text, is_code_block)) = result else {
1346            return;
1347        };
1348
1349        cx.write_to_clipboard(ClipboardItem::new_string(text));
1350
1351        struct CopyToClipboardToast;
1352        workspace.show_toast(
1353            Toast::new(
1354                NotificationId::unique::<CopyToClipboardToast>(),
1355                format!(
1356                    "{} copied to clipboard.",
1357                    if is_code_block {
1358                        "Code block"
1359                    } else {
1360                        "Selection"
1361                    }
1362                ),
1363            )
1364            .autohide(),
1365            cx,
1366        );
1367    }
1368
1369    pub fn handle_insert_dragged_files(
1370        workspace: &mut Workspace,
1371        action: &InsertDraggedFiles,
1372        window: &mut Window,
1373        cx: &mut Context<Workspace>,
1374    ) {
1375        let Some(agent_panel_delegate) = <dyn AgentPanelDelegate>::try_global(cx) else {
1376            return;
1377        };
1378        let Some(context_editor_view) =
1379            agent_panel_delegate.active_text_thread_editor(workspace, window, cx)
1380        else {
1381            return;
1382        };
1383
1384        let project = context_editor_view.read(cx).project.clone();
1385
1386        let paths = match action {
1387            InsertDraggedFiles::ProjectPaths(paths) => Task::ready((paths.clone(), vec![])),
1388            InsertDraggedFiles::ExternalFiles(paths) => {
1389                let tasks = paths
1390                    .clone()
1391                    .into_iter()
1392                    .map(|path| Workspace::project_path_for_path(project.clone(), &path, false, cx))
1393                    .collect::<Vec<_>>();
1394
1395                cx.background_spawn(async move {
1396                    let mut paths = vec![];
1397                    let mut worktrees = vec![];
1398
1399                    let opened_paths = futures::future::join_all(tasks).await;
1400
1401                    for entry in opened_paths {
1402                        if let Some((worktree, project_path)) = entry.log_err() {
1403                            worktrees.push(worktree);
1404                            paths.push(project_path);
1405                        }
1406                    }
1407
1408                    (paths, worktrees)
1409                })
1410            }
1411        };
1412
1413        context_editor_view.update(cx, |_, cx| {
1414            cx.spawn_in(window, async move |this, cx| {
1415                let (paths, dragged_file_worktrees) = paths.await;
1416                this.update_in(cx, |this, window, cx| {
1417                    this.insert_dragged_files(paths, dragged_file_worktrees, window, cx);
1418                })
1419                .ok();
1420            })
1421            .detach();
1422        })
1423    }
1424
1425    pub fn insert_dragged_files(
1426        &mut self,
1427        opened_paths: Vec<ProjectPath>,
1428        added_worktrees: Vec<Entity<Worktree>>,
1429        window: &mut Window,
1430        cx: &mut Context<Self>,
1431    ) {
1432        let mut file_slash_command_args = vec![];
1433        for project_path in opened_paths.into_iter() {
1434            let Some(worktree) = self
1435                .project
1436                .read(cx)
1437                .worktree_for_id(project_path.worktree_id, cx)
1438            else {
1439                continue;
1440            };
1441            let path_style = worktree.read(cx).path_style();
1442            let full_path = worktree
1443                .read(cx)
1444                .root_name()
1445                .join(&project_path.path)
1446                .display(path_style)
1447                .into_owned();
1448            file_slash_command_args.push(full_path);
1449        }
1450
1451        let cmd_name = FileSlashCommand.name();
1452
1453        let file_argument = file_slash_command_args.join(" ");
1454
1455        self.editor.update(cx, |editor, cx| {
1456            editor.insert("\n", window, cx);
1457            editor.insert(&format!("/{} {}", cmd_name, file_argument), window, cx);
1458        });
1459        self.confirm_command(&ConfirmCommand, window, cx);
1460        self.dragged_file_worktrees.extend(added_worktrees);
1461    }
1462
1463    pub fn quote_selection(
1464        workspace: &mut Workspace,
1465        _: &AddSelectionToThread,
1466        window: &mut Window,
1467        cx: &mut Context<Workspace>,
1468    ) {
1469        let Some(agent_panel_delegate) = <dyn AgentPanelDelegate>::try_global(cx) else {
1470            return;
1471        };
1472
1473        let Some((selections, buffer)) = maybe!({
1474            let editor = workspace
1475                .active_item(cx)
1476                .and_then(|item| item.act_as::<Editor>(cx))?;
1477
1478            let buffer = editor.read(cx).buffer().clone();
1479            let snapshot = buffer.read(cx).snapshot(cx);
1480            let selections = editor.update(cx, |editor, cx| {
1481                editor
1482                    .selections
1483                    .all_adjusted(&editor.display_snapshot(cx))
1484                    .into_iter()
1485                    .filter_map(|s| {
1486                        (!s.is_empty())
1487                            .then(|| snapshot.anchor_after(s.start)..snapshot.anchor_before(s.end))
1488                    })
1489                    .collect::<Vec<_>>()
1490            });
1491            Some((selections, buffer))
1492        }) else {
1493            return;
1494        };
1495
1496        if selections.is_empty() {
1497            return;
1498        }
1499
1500        agent_panel_delegate.quote_selection(workspace, selections, buffer, window, cx);
1501    }
1502
1503    pub fn quote_ranges(
1504        &mut self,
1505        ranges: Vec<Range<Point>>,
1506        snapshot: MultiBufferSnapshot,
1507        window: &mut Window,
1508        cx: &mut Context<Self>,
1509    ) {
1510        let creases = selections_creases(ranges, snapshot, cx);
1511
1512        self.editor.update(cx, |editor, cx| {
1513            editor.insert("\n", window, cx);
1514            for (text, crease_title) in creases {
1515                let point = editor
1516                    .selections
1517                    .newest::<Point>(&editor.display_snapshot(cx))
1518                    .head();
1519                let start_row = MultiBufferRow(point.row);
1520
1521                editor.insert(&text, window, cx);
1522
1523                let snapshot = editor.buffer().read(cx).snapshot(cx);
1524                let anchor_before = snapshot.anchor_after(point);
1525                let anchor_after = editor
1526                    .selections
1527                    .newest_anchor()
1528                    .head()
1529                    .bias_left(&snapshot);
1530
1531                editor.insert("\n", window, cx);
1532
1533                let fold_placeholder =
1534                    quote_selection_fold_placeholder(crease_title, cx.entity().downgrade());
1535                let crease = Crease::inline(
1536                    anchor_before..anchor_after,
1537                    fold_placeholder,
1538                    render_quote_selection_output_toggle,
1539                    |_, _, _, _| Empty.into_any(),
1540                );
1541                editor.insert_creases(vec![crease], cx);
1542                editor.fold_at(start_row, window, cx);
1543            }
1544        })
1545    }
1546
1547    fn copy(&mut self, _: &editor::actions::Copy, _window: &mut Window, cx: &mut Context<Self>) {
1548        if self.editor.read(cx).selections.count() == 1 {
1549            let (copied_text, metadata, _) = self.get_clipboard_contents(cx);
1550            cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
1551                copied_text,
1552                metadata,
1553            ));
1554            cx.stop_propagation();
1555            return;
1556        }
1557
1558        cx.propagate();
1559    }
1560
1561    fn cut(&mut self, _: &editor::actions::Cut, window: &mut Window, cx: &mut Context<Self>) {
1562        if self.editor.read(cx).selections.count() == 1 {
1563            let (copied_text, metadata, selections) = self.get_clipboard_contents(cx);
1564
1565            self.editor.update(cx, |editor, cx| {
1566                editor.transact(window, cx, |this, window, cx| {
1567                    this.change_selections(Default::default(), window, cx, |s| {
1568                        s.select(selections);
1569                    });
1570                    this.insert("", window, cx);
1571                    cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
1572                        copied_text,
1573                        metadata,
1574                    ));
1575                });
1576            });
1577
1578            cx.stop_propagation();
1579            return;
1580        }
1581
1582        cx.propagate();
1583    }
1584
1585    fn get_clipboard_contents(
1586        &mut self,
1587        cx: &mut Context<Self>,
1588    ) -> (
1589        String,
1590        CopyMetadata,
1591        Vec<text::Selection<MultiBufferOffset>>,
1592    ) {
1593        let (mut selection, creases) = self.editor.update(cx, |editor, cx| {
1594            let mut selection = editor
1595                .selections
1596                .newest_adjusted(&editor.display_snapshot(cx));
1597            let snapshot = editor.buffer().read(cx).snapshot(cx);
1598
1599            selection.goal = SelectionGoal::None;
1600
1601            let selection_start = snapshot.point_to_offset(selection.start);
1602
1603            (
1604                selection.map(|point| snapshot.point_to_offset(point)),
1605                editor.display_map.update(cx, |display_map, cx| {
1606                    display_map
1607                        .snapshot(cx)
1608                        .crease_snapshot
1609                        .creases_in_range(
1610                            MultiBufferRow(selection.start.row)
1611                                ..MultiBufferRow(selection.end.row + 1),
1612                            &snapshot,
1613                        )
1614                        .filter_map(|crease| {
1615                            if let Crease::Inline {
1616                                range, metadata, ..
1617                            } = &crease
1618                            {
1619                                let metadata = metadata.as_ref()?;
1620                                let start = range
1621                                    .start
1622                                    .to_offset(&snapshot)
1623                                    .saturating_sub(selection_start);
1624                                let end = range
1625                                    .end
1626                                    .to_offset(&snapshot)
1627                                    .saturating_sub(selection_start);
1628
1629                                let range_relative_to_selection = start..end;
1630                                if !range_relative_to_selection.is_empty() {
1631                                    return Some(SelectedCreaseMetadata {
1632                                        range_relative_to_selection,
1633                                        crease: metadata.clone(),
1634                                    });
1635                                }
1636                            }
1637                            None
1638                        })
1639                        .collect::<Vec<_>>()
1640                }),
1641            )
1642        });
1643
1644        let text_thread = self.text_thread.read(cx);
1645
1646        let mut text = String::new();
1647
1648        // If selection is empty, we want to copy the entire line
1649        if selection.range().is_empty() {
1650            let snapshot = self.editor.read(cx).buffer().read(cx).snapshot(cx);
1651            let point = snapshot.offset_to_point(selection.range().start);
1652            selection.start = snapshot.point_to_offset(Point::new(point.row, 0));
1653            selection.end = snapshot
1654                .point_to_offset(cmp::min(Point::new(point.row + 1, 0), snapshot.max_point()));
1655            for chunk in snapshot.text_for_range(selection.range()) {
1656                text.push_str(chunk);
1657            }
1658        } else {
1659            for message in text_thread.messages(cx) {
1660                if message.offset_range.start >= selection.range().end.0 {
1661                    break;
1662                } else if message.offset_range.end >= selection.range().start.0 {
1663                    let range = cmp::max(message.offset_range.start, selection.range().start.0)
1664                        ..cmp::min(message.offset_range.end, selection.range().end.0);
1665                    if !range.is_empty() {
1666                        for chunk in text_thread.buffer().read(cx).text_for_range(range) {
1667                            text.push_str(chunk);
1668                        }
1669                        if message.offset_range.end < selection.range().end.0 {
1670                            text.push('\n');
1671                        }
1672                    }
1673                }
1674            }
1675        }
1676        (text, CopyMetadata { creases }, vec![selection])
1677    }
1678
1679    fn paste(
1680        &mut self,
1681        action: &editor::actions::Paste,
1682        window: &mut Window,
1683        cx: &mut Context<Self>,
1684    ) {
1685        cx.stop_propagation();
1686
1687        let mut images = if let Some(item) = cx.read_from_clipboard() {
1688            item.into_entries()
1689                .filter_map(|entry| {
1690                    if let ClipboardEntry::Image(image) = entry {
1691                        Some(image)
1692                    } else {
1693                        None
1694                    }
1695                })
1696                .collect()
1697        } else {
1698            Vec::new()
1699        };
1700
1701        if let Some(paths) = cx.read_from_clipboard() {
1702            for path in paths
1703                .into_entries()
1704                .filter_map(|entry| {
1705                    if let ClipboardEntry::ExternalPaths(paths) = entry {
1706                        Some(paths.paths().to_owned())
1707                    } else {
1708                        None
1709                    }
1710                })
1711                .flatten()
1712            {
1713                let Ok(content) = std::fs::read(path) else {
1714                    continue;
1715                };
1716                let Ok(format) = image::guess_format(&content) else {
1717                    continue;
1718                };
1719                images.push(gpui::Image::from_bytes(
1720                    match format {
1721                        image::ImageFormat::Png => gpui::ImageFormat::Png,
1722                        image::ImageFormat::Jpeg => gpui::ImageFormat::Jpeg,
1723                        image::ImageFormat::WebP => gpui::ImageFormat::Webp,
1724                        image::ImageFormat::Gif => gpui::ImageFormat::Gif,
1725                        image::ImageFormat::Bmp => gpui::ImageFormat::Bmp,
1726                        image::ImageFormat::Tiff => gpui::ImageFormat::Tiff,
1727                        image::ImageFormat::Ico => gpui::ImageFormat::Ico,
1728                        _ => continue,
1729                    },
1730                    content,
1731                ));
1732            }
1733        }
1734
1735        let metadata = if let Some(item) = cx.read_from_clipboard() {
1736            item.entries().first().and_then(|entry| {
1737                if let ClipboardEntry::String(text) = entry {
1738                    text.metadata_json::<CopyMetadata>()
1739                } else {
1740                    None
1741                }
1742            })
1743        } else {
1744            None
1745        };
1746
1747        if images.is_empty() {
1748            self.editor.update(cx, |editor, cx| {
1749                let paste_position = editor
1750                    .selections
1751                    .newest::<MultiBufferOffset>(&editor.display_snapshot(cx))
1752                    .head();
1753                editor.paste(action, window, cx);
1754
1755                if let Some(metadata) = metadata {
1756                    let buffer = editor.buffer().read(cx).snapshot(cx);
1757
1758                    let mut buffer_rows_to_fold = BTreeSet::new();
1759                    let weak_editor = cx.entity().downgrade();
1760                    editor.insert_creases(
1761                        metadata.creases.into_iter().map(|metadata| {
1762                            let start = buffer.anchor_after(
1763                                paste_position + metadata.range_relative_to_selection.start,
1764                            );
1765                            let end = buffer.anchor_before(
1766                                paste_position + metadata.range_relative_to_selection.end,
1767                            );
1768
1769                            let buffer_row = MultiBufferRow(start.to_point(&buffer).row);
1770                            buffer_rows_to_fold.insert(buffer_row);
1771                            Crease::inline(
1772                                start..end,
1773                                FoldPlaceholder {
1774                                    render: render_fold_icon_button(
1775                                        weak_editor.clone(),
1776                                        metadata.crease.icon_path.clone(),
1777                                        metadata.crease.label.clone(),
1778                                    ),
1779                                    ..Default::default()
1780                                },
1781                                render_slash_command_output_toggle,
1782                                |_, _, _, _| Empty.into_any(),
1783                            )
1784                            .with_metadata(metadata.crease)
1785                        }),
1786                        cx,
1787                    );
1788                    for buffer_row in buffer_rows_to_fold.into_iter().rev() {
1789                        editor.fold_at(buffer_row, window, cx);
1790                    }
1791                }
1792            });
1793        } else {
1794            let mut image_positions = Vec::new();
1795            self.editor.update(cx, |editor, cx| {
1796                editor.transact(window, cx, |editor, _window, cx| {
1797                    let edits = editor
1798                        .selections
1799                        .all::<MultiBufferOffset>(&editor.display_snapshot(cx))
1800                        .into_iter()
1801                        .map(|selection| (selection.start..selection.end, "\n"));
1802                    editor.edit(edits, cx);
1803
1804                    let snapshot = editor.buffer().read(cx).snapshot(cx);
1805                    for selection in editor
1806                        .selections
1807                        .all::<MultiBufferOffset>(&editor.display_snapshot(cx))
1808                    {
1809                        image_positions.push(snapshot.anchor_before(selection.end));
1810                    }
1811                });
1812            });
1813
1814            self.text_thread.update(cx, |text_thread, cx| {
1815                for image in images {
1816                    let Some(render_image) = image.to_image_data(cx.svg_renderer()).log_err()
1817                    else {
1818                        continue;
1819                    };
1820                    let image_id = image.id();
1821                    let image_task = LanguageModelImage::from_image(Arc::new(image), cx).shared();
1822
1823                    for image_position in image_positions.iter() {
1824                        text_thread.insert_content(
1825                            Content::Image {
1826                                anchor: image_position.text_anchor,
1827                                image_id,
1828                                image: image_task.clone(),
1829                                render_image: render_image.clone(),
1830                            },
1831                            cx,
1832                        );
1833                    }
1834                }
1835            });
1836        }
1837    }
1838
1839    fn update_image_blocks(&mut self, cx: &mut Context<Self>) {
1840        self.editor.update(cx, |editor, cx| {
1841            let buffer = editor.buffer().read(cx).snapshot(cx);
1842            let excerpt_id = *buffer.as_singleton().unwrap().0;
1843            let old_blocks = std::mem::take(&mut self.image_blocks);
1844            let new_blocks = self
1845                .text_thread
1846                .read(cx)
1847                .contents(cx)
1848                .map(
1849                    |Content::Image {
1850                         anchor,
1851                         render_image,
1852                         ..
1853                     }| (anchor, render_image),
1854                )
1855                .filter_map(|(anchor, render_image)| {
1856                    const MAX_HEIGHT_IN_LINES: u32 = 8;
1857                    let anchor = buffer.anchor_in_excerpt(excerpt_id, anchor).unwrap();
1858                    let image = render_image;
1859                    anchor.is_valid(&buffer).then(|| BlockProperties {
1860                        placement: BlockPlacement::Above(anchor),
1861                        height: Some(MAX_HEIGHT_IN_LINES),
1862                        style: BlockStyle::Sticky,
1863                        render: Arc::new(move |cx| {
1864                            let image_size = size_for_image(
1865                                &image,
1866                                size(
1867                                    cx.max_width - cx.margins.gutter.full_width(),
1868                                    MAX_HEIGHT_IN_LINES as f32 * cx.line_height,
1869                                ),
1870                            );
1871                            h_flex()
1872                                .pl(cx.margins.gutter.full_width())
1873                                .child(
1874                                    img(image.clone())
1875                                        .object_fit(gpui::ObjectFit::ScaleDown)
1876                                        .w(image_size.width)
1877                                        .h(image_size.height),
1878                                )
1879                                .into_any_element()
1880                        }),
1881                        priority: 0,
1882                    })
1883                })
1884                .collect::<Vec<_>>();
1885
1886            editor.remove_blocks(old_blocks, None, cx);
1887            let ids = editor.insert_blocks(new_blocks, None, cx);
1888            self.image_blocks = HashSet::from_iter(ids);
1889        });
1890    }
1891
1892    fn split(&mut self, _: &Split, _window: &mut Window, cx: &mut Context<Self>) {
1893        self.text_thread.update(cx, |text_thread, cx| {
1894            let selections = self.editor.read(cx).selections.disjoint_anchors_arc();
1895            for selection in selections.as_ref() {
1896                let buffer = self.editor.read(cx).buffer().read(cx).snapshot(cx);
1897                let range = selection
1898                    .map(|endpoint| endpoint.to_offset(&buffer))
1899                    .range();
1900                text_thread.split_message(range.start.0..range.end.0, cx);
1901            }
1902        });
1903    }
1904
1905    fn save(&mut self, _: &Save, _window: &mut Window, cx: &mut Context<Self>) {
1906        self.text_thread.update(cx, |text_thread, cx| {
1907            text_thread.save(Some(Duration::from_millis(500)), self.fs.clone(), cx)
1908        });
1909    }
1910
1911    pub fn title(&self, cx: &App) -> SharedString {
1912        self.text_thread.read(cx).summary().or_default()
1913    }
1914
1915    pub fn regenerate_summary(&mut self, cx: &mut Context<Self>) {
1916        self.text_thread
1917            .update(cx, |text_thread, cx| text_thread.summarize(true, cx));
1918    }
1919
1920    fn render_remaining_tokens(&self, cx: &App) -> Option<impl IntoElement + use<>> {
1921        let (token_count_color, token_count, max_token_count, tooltip) =
1922            match token_state(&self.text_thread, cx)? {
1923                TokenState::NoTokensLeft {
1924                    max_token_count,
1925                    token_count,
1926                } => (
1927                    Color::Error,
1928                    token_count,
1929                    max_token_count,
1930                    Some("Token Limit Reached"),
1931                ),
1932                TokenState::HasMoreTokens {
1933                    max_token_count,
1934                    token_count,
1935                    over_warn_threshold,
1936                } => {
1937                    let (color, tooltip) = if over_warn_threshold {
1938                        (Color::Warning, Some("Token Limit is Close to Exhaustion"))
1939                    } else {
1940                        (Color::Muted, None)
1941                    };
1942                    (color, token_count, max_token_count, tooltip)
1943                }
1944            };
1945
1946        Some(
1947            h_flex()
1948                .id("token-count")
1949                .gap_0p5()
1950                .child(
1951                    Label::new(humanize_token_count(token_count))
1952                        .size(LabelSize::Small)
1953                        .color(token_count_color),
1954                )
1955                .child(Label::new("/").size(LabelSize::Small).color(Color::Muted))
1956                .child(
1957                    Label::new(humanize_token_count(max_token_count))
1958                        .size(LabelSize::Small)
1959                        .color(Color::Muted),
1960                )
1961                .when_some(tooltip, |element, tooltip| {
1962                    element.tooltip(Tooltip::text(tooltip))
1963                }),
1964        )
1965    }
1966
1967    fn render_send_button(&self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1968        let focus_handle = self.focus_handle(cx);
1969
1970        let (style, tooltip) = match token_state(&self.text_thread, cx) {
1971            Some(TokenState::NoTokensLeft { .. }) => (
1972                ButtonStyle::Tinted(TintColor::Error),
1973                Some(Tooltip::text("Token limit reached")(window, cx)),
1974            ),
1975            Some(TokenState::HasMoreTokens {
1976                over_warn_threshold,
1977                ..
1978            }) => {
1979                let (style, tooltip) = if over_warn_threshold {
1980                    (
1981                        ButtonStyle::Tinted(TintColor::Warning),
1982                        Some(Tooltip::text("Token limit is close to exhaustion")(
1983                            window, cx,
1984                        )),
1985                    )
1986                } else {
1987                    (ButtonStyle::Filled, None)
1988                };
1989                (style, tooltip)
1990            }
1991            None => (ButtonStyle::Filled, None),
1992        };
1993
1994        Button::new("send_button", "Send")
1995            .label_size(LabelSize::Small)
1996            .disabled(self.sending_disabled(cx))
1997            .style(style)
1998            .when_some(tooltip, |button, tooltip| {
1999                button.tooltip(move |_, _| tooltip.clone())
2000            })
2001            .layer(ElevationIndex::ModalSurface)
2002            .key_binding(
2003                KeyBinding::for_action_in(&Assist, &focus_handle, cx)
2004                    .map(|kb| kb.size(rems_from_px(12.))),
2005            )
2006            .on_click(move |_event, window, cx| {
2007                focus_handle.dispatch_action(&Assist, window, cx);
2008            })
2009    }
2010
2011    /// Whether or not we should allow messages to be sent.
2012    /// Will return false if the selected provided has a configuration error or
2013    /// if the user has not accepted the terms of service for this provider.
2014    fn sending_disabled(&self, cx: &mut Context<'_, TextThreadEditor>) -> bool {
2015        let model_registry = LanguageModelRegistry::read_global(cx);
2016        let Some(configuration_error) =
2017            model_registry.configuration_error(model_registry.default_model(), cx)
2018        else {
2019            return false;
2020        };
2021
2022        match configuration_error {
2023            ConfigurationError::NoProvider
2024            | ConfigurationError::ModelNotFound
2025            | ConfigurationError::ProviderNotAuthenticated(_) => true,
2026        }
2027    }
2028
2029    fn render_inject_context_menu(&self, cx: &mut Context<Self>) -> impl IntoElement {
2030        slash_command_picker::SlashCommandSelector::new(
2031            self.slash_commands.clone(),
2032            cx.entity().downgrade(),
2033            IconButton::new("trigger", IconName::Plus)
2034                .icon_size(IconSize::Small)
2035                .icon_color(Color::Muted)
2036                .selected_icon_color(Color::Accent)
2037                .selected_style(ButtonStyle::Filled),
2038            move |_window, cx| {
2039                Tooltip::with_meta("Add Context", None, "Type / to insert via keyboard", cx)
2040            },
2041        )
2042    }
2043
2044    fn render_burn_mode_toggle(&self, cx: &mut Context<Self>) -> Option<AnyElement> {
2045        let text_thread = self.text_thread().read(cx);
2046        let active_model = LanguageModelRegistry::read_global(cx)
2047            .default_model()
2048            .map(|default| default.model)?;
2049        if !active_model.supports_burn_mode() {
2050            return None;
2051        }
2052
2053        let active_completion_mode = text_thread.completion_mode();
2054        let burn_mode_enabled = active_completion_mode == CompletionMode::Burn;
2055        let icon = if burn_mode_enabled {
2056            IconName::ZedBurnModeOn
2057        } else {
2058            IconName::ZedBurnMode
2059        };
2060
2061        Some(
2062            IconButton::new("burn-mode", icon)
2063                .icon_size(IconSize::Small)
2064                .icon_color(Color::Muted)
2065                .toggle_state(burn_mode_enabled)
2066                .selected_icon_color(Color::Error)
2067                .on_click(cx.listener(move |this, _event, _window, cx| {
2068                    this.text_thread().update(cx, |text_thread, _cx| {
2069                        text_thread.set_completion_mode(match active_completion_mode {
2070                            CompletionMode::Burn => CompletionMode::Normal,
2071                            CompletionMode::Normal => CompletionMode::Burn,
2072                        });
2073                    });
2074                }))
2075                .tooltip(move |_window, cx| {
2076                    cx.new(|_| BurnModeTooltip::new().selected(burn_mode_enabled))
2077                        .into()
2078                })
2079                .into_any_element(),
2080        )
2081    }
2082
2083    fn render_language_model_selector(
2084        &self,
2085        window: &mut Window,
2086        cx: &mut Context<Self>,
2087    ) -> impl IntoElement {
2088        let active_model = LanguageModelRegistry::read_global(cx)
2089            .default_model()
2090            .map(|default| default.model);
2091        let model_name = match active_model {
2092            Some(model) => model.name().0,
2093            None => SharedString::from("Select Model"),
2094        };
2095
2096        let active_provider = LanguageModelRegistry::read_global(cx)
2097            .default_model()
2098            .map(|default| default.provider);
2099
2100        let provider_icon_path = active_provider.as_ref().and_then(|p| p.icon_path());
2101        let provider_icon_name = match &active_provider {
2102            Some(provider) => provider.icon(),
2103            None => IconName::Ai,
2104        };
2105
2106        let focus_handle = self.editor().focus_handle(cx);
2107        let (color, icon) = if self.language_model_selector_menu_handle.is_deployed() {
2108            (Color::Accent, IconName::ChevronUp)
2109        } else {
2110            (Color::Muted, IconName::ChevronDown)
2111        };
2112
2113        let provider_icon_element = if let Some(icon_path) = provider_icon_path {
2114            Icon::from_external_svg(icon_path)
2115                .color(color)
2116                .size(IconSize::XSmall)
2117        } else {
2118            Icon::new(provider_icon_name)
2119                .color(color)
2120                .size(IconSize::XSmall)
2121        };
2122
2123        PickerPopoverMenu::new(
2124            self.language_model_selector.clone(),
2125            ButtonLike::new("active-model")
2126                .selected_style(ButtonStyle::Tinted(TintColor::Accent))
2127                .child(
2128                    h_flex()
2129                        .gap_0p5()
2130                        .child(provider_icon_element)
2131                        .child(
2132                            Label::new(model_name)
2133                                .color(color)
2134                                .size(LabelSize::Small)
2135                                .ml_0p5(),
2136                        )
2137                        .child(Icon::new(icon).color(color).size(IconSize::XSmall)),
2138                ),
2139            move |_window, cx| {
2140                Tooltip::for_action_in("Change Model", &ToggleModelSelector, &focus_handle, cx)
2141            },
2142            gpui::Corner::BottomRight,
2143            cx,
2144        )
2145        .with_handle(self.language_model_selector_menu_handle.clone())
2146        .render(window, cx)
2147    }
2148
2149    fn render_last_error(&self, cx: &mut Context<Self>) -> Option<AnyElement> {
2150        let last_error = self.last_error.as_ref()?;
2151
2152        Some(
2153            div()
2154                .absolute()
2155                .right_3()
2156                .bottom_12()
2157                .max_w_96()
2158                .py_2()
2159                .px_3()
2160                .elevation_2(cx)
2161                .occlude()
2162                .child(match last_error {
2163                    AssistError::PaymentRequired => self.render_payment_required_error(cx),
2164                    AssistError::Message(error_message) => {
2165                        self.render_assist_error(error_message, cx)
2166                    }
2167                })
2168                .into_any(),
2169        )
2170    }
2171
2172    fn render_payment_required_error(&self, cx: &mut Context<Self>) -> AnyElement {
2173        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.";
2174
2175        v_flex()
2176            .gap_0p5()
2177            .child(
2178                h_flex()
2179                    .gap_1p5()
2180                    .items_center()
2181                    .child(Icon::new(IconName::XCircle).color(Color::Error))
2182                    .child(Label::new("Free Usage Exceeded").weight(FontWeight::MEDIUM)),
2183            )
2184            .child(
2185                div()
2186                    .id("error-message")
2187                    .max_h_24()
2188                    .overflow_y_scroll()
2189                    .child(Label::new(ERROR_MESSAGE)),
2190            )
2191            .child(
2192                h_flex()
2193                    .justify_end()
2194                    .mt_1()
2195                    .child(Button::new("subscribe", "Subscribe").on_click(cx.listener(
2196                        |this, _, _window, cx| {
2197                            this.last_error = None;
2198                            cx.open_url(&zed_urls::account_url(cx));
2199                            cx.notify();
2200                        },
2201                    )))
2202                    .child(Button::new("dismiss", "Dismiss").on_click(cx.listener(
2203                        |this, _, _window, cx| {
2204                            this.last_error = None;
2205                            cx.notify();
2206                        },
2207                    ))),
2208            )
2209            .into_any()
2210    }
2211
2212    fn render_assist_error(
2213        &self,
2214        error_message: &SharedString,
2215        cx: &mut Context<Self>,
2216    ) -> AnyElement {
2217        v_flex()
2218            .gap_0p5()
2219            .child(
2220                h_flex()
2221                    .gap_1p5()
2222                    .items_center()
2223                    .child(Icon::new(IconName::XCircle).color(Color::Error))
2224                    .child(
2225                        Label::new("Error interacting with language model")
2226                            .weight(FontWeight::MEDIUM),
2227                    ),
2228            )
2229            .child(
2230                div()
2231                    .id("error-message")
2232                    .max_h_32()
2233                    .overflow_y_scroll()
2234                    .child(Label::new(error_message.clone())),
2235            )
2236            .child(
2237                h_flex()
2238                    .justify_end()
2239                    .mt_1()
2240                    .child(Button::new("dismiss", "Dismiss").on_click(cx.listener(
2241                        |this, _, _window, cx| {
2242                            this.last_error = None;
2243                            cx.notify();
2244                        },
2245                    ))),
2246            )
2247            .into_any()
2248    }
2249}
2250
2251/// Returns the contents of the *outermost* fenced code block that contains the given offset.
2252fn find_surrounding_code_block(snapshot: &BufferSnapshot, offset: usize) -> Option<Range<usize>> {
2253    const CODE_BLOCK_NODE: &str = "fenced_code_block";
2254    const CODE_BLOCK_CONTENT: &str = "code_fence_content";
2255
2256    let layer = snapshot.syntax_layers().next()?;
2257
2258    let root_node = layer.node();
2259    let mut cursor = root_node.walk();
2260
2261    // Go to the first child for the given offset
2262    while cursor.goto_first_child_for_byte(offset).is_some() {
2263        // If we're at the end of the node, go to the next one.
2264        // Example: if you have a fenced-code-block, and you're on the start of the line
2265        // right after the closing ```, you want to skip the fenced-code-block and
2266        // go to the next sibling.
2267        if cursor.node().end_byte() == offset {
2268            cursor.goto_next_sibling();
2269        }
2270
2271        if cursor.node().start_byte() > offset {
2272            break;
2273        }
2274
2275        // We found the fenced code block.
2276        if cursor.node().kind() == CODE_BLOCK_NODE {
2277            // Now we need to find the child node that contains the code.
2278            cursor.goto_first_child();
2279            loop {
2280                if cursor.node().kind() == CODE_BLOCK_CONTENT {
2281                    return Some(cursor.node().byte_range());
2282                }
2283                if !cursor.goto_next_sibling() {
2284                    break;
2285                }
2286            }
2287        }
2288    }
2289
2290    None
2291}
2292
2293fn render_thought_process_fold_icon_button(
2294    editor: WeakEntity<Editor>,
2295    status: ThoughtProcessStatus,
2296) -> Arc<dyn Send + Sync + Fn(FoldId, Range<Anchor>, &mut App) -> AnyElement> {
2297    Arc::new(move |fold_id, fold_range, _cx| {
2298        let editor = editor.clone();
2299
2300        let button = ButtonLike::new(fold_id).layer(ElevationIndex::ElevatedSurface);
2301        let button = match status {
2302            ThoughtProcessStatus::Pending => button
2303                .child(
2304                    Icon::new(IconName::ToolThink)
2305                        .size(IconSize::Small)
2306                        .color(Color::Muted),
2307                )
2308                .child(
2309                    Label::new("Thinking…").color(Color::Muted).with_animation(
2310                        "pulsating-label",
2311                        Animation::new(Duration::from_secs(2))
2312                            .repeat()
2313                            .with_easing(pulsating_between(0.4, 0.8)),
2314                        |label, delta| label.alpha(delta),
2315                    ),
2316                ),
2317            ThoughtProcessStatus::Completed => button
2318                .style(ButtonStyle::Filled)
2319                .child(Icon::new(IconName::ToolThink).size(IconSize::Small))
2320                .child(Label::new("Thought Process").single_line()),
2321        };
2322
2323        button
2324            .on_click(move |_, window, cx| {
2325                editor
2326                    .update(cx, |editor, cx| {
2327                        let buffer_start = fold_range
2328                            .start
2329                            .to_point(&editor.buffer().read(cx).read(cx));
2330                        let buffer_row = MultiBufferRow(buffer_start.row);
2331                        editor.unfold_at(buffer_row, window, cx);
2332                    })
2333                    .ok();
2334            })
2335            .into_any_element()
2336    })
2337}
2338
2339fn render_fold_icon_button(
2340    editor: WeakEntity<Editor>,
2341    icon_path: SharedString,
2342    label: SharedString,
2343) -> Arc<dyn Send + Sync + Fn(FoldId, Range<Anchor>, &mut App) -> AnyElement> {
2344    Arc::new(move |fold_id, fold_range, _cx| {
2345        let editor = editor.clone();
2346        ButtonLike::new(fold_id)
2347            .style(ButtonStyle::Filled)
2348            .layer(ElevationIndex::ElevatedSurface)
2349            .child(Icon::from_path(icon_path.clone()))
2350            .child(Label::new(label.clone()).single_line())
2351            .on_click(move |_, window, cx| {
2352                editor
2353                    .update(cx, |editor, cx| {
2354                        let buffer_start = fold_range
2355                            .start
2356                            .to_point(&editor.buffer().read(cx).read(cx));
2357                        let buffer_row = MultiBufferRow(buffer_start.row);
2358                        editor.unfold_at(buffer_row, window, cx);
2359                    })
2360                    .ok();
2361            })
2362            .into_any_element()
2363    })
2364}
2365
2366type ToggleFold = Arc<dyn Fn(bool, &mut Window, &mut App) + Send + Sync>;
2367
2368fn render_slash_command_output_toggle(
2369    row: MultiBufferRow,
2370    is_folded: bool,
2371    fold: ToggleFold,
2372    _window: &mut Window,
2373    _cx: &mut App,
2374) -> AnyElement {
2375    Disclosure::new(
2376        ("slash-command-output-fold-indicator", row.0 as u64),
2377        !is_folded,
2378    )
2379    .toggle_state(is_folded)
2380    .on_click(move |_e, window, cx| fold(!is_folded, window, cx))
2381    .into_any_element()
2382}
2383
2384pub fn fold_toggle(
2385    name: &'static str,
2386) -> impl Fn(
2387    MultiBufferRow,
2388    bool,
2389    Arc<dyn Fn(bool, &mut Window, &mut App) + Send + Sync>,
2390    &mut Window,
2391    &mut App,
2392) -> AnyElement {
2393    move |row, is_folded, fold, _window, _cx| {
2394        Disclosure::new((name, row.0 as u64), !is_folded)
2395            .toggle_state(is_folded)
2396            .on_click(move |_e, window, cx| fold(!is_folded, window, cx))
2397            .into_any_element()
2398    }
2399}
2400
2401fn quote_selection_fold_placeholder(title: String, editor: WeakEntity<Editor>) -> FoldPlaceholder {
2402    FoldPlaceholder {
2403        render: Arc::new({
2404            move |fold_id, fold_range, _cx| {
2405                let editor = editor.clone();
2406                ButtonLike::new(fold_id)
2407                    .style(ButtonStyle::Filled)
2408                    .layer(ElevationIndex::ElevatedSurface)
2409                    .child(Icon::new(IconName::TextSnippet))
2410                    .child(Label::new(title.clone()).single_line())
2411                    .on_click(move |_, window, cx| {
2412                        editor
2413                            .update(cx, |editor, cx| {
2414                                let buffer_start = fold_range
2415                                    .start
2416                                    .to_point(&editor.buffer().read(cx).read(cx));
2417                                let buffer_row = MultiBufferRow(buffer_start.row);
2418                                editor.unfold_at(buffer_row, window, cx);
2419                            })
2420                            .ok();
2421                    })
2422                    .into_any_element()
2423            }
2424        }),
2425        merge_adjacent: false,
2426        ..Default::default()
2427    }
2428}
2429
2430fn render_quote_selection_output_toggle(
2431    row: MultiBufferRow,
2432    is_folded: bool,
2433    fold: ToggleFold,
2434    _window: &mut Window,
2435    _cx: &mut App,
2436) -> AnyElement {
2437    Disclosure::new(("quote-selection-indicator", row.0 as u64), !is_folded)
2438        .toggle_state(is_folded)
2439        .on_click(move |_e, window, cx| fold(!is_folded, window, cx))
2440        .into_any_element()
2441}
2442
2443fn render_pending_slash_command_gutter_decoration(
2444    row: MultiBufferRow,
2445    status: &PendingSlashCommandStatus,
2446    confirm_command: Arc<dyn Fn(&mut Window, &mut App)>,
2447) -> AnyElement {
2448    let mut icon = IconButton::new(
2449        ("slash-command-gutter-decoration", row.0),
2450        ui::IconName::TriangleRight,
2451    )
2452    .on_click(move |_e, window, cx| confirm_command(window, cx))
2453    .icon_size(ui::IconSize::Small)
2454    .size(ui::ButtonSize::None);
2455
2456    match status {
2457        PendingSlashCommandStatus::Idle => {
2458            icon = icon.icon_color(Color::Muted);
2459        }
2460        PendingSlashCommandStatus::Running { .. } => {
2461            icon = icon.toggle_state(true);
2462        }
2463        PendingSlashCommandStatus::Error(_) => icon = icon.icon_color(Color::Error),
2464    }
2465
2466    icon.into_any_element()
2467}
2468
2469#[derive(Debug, Clone, Serialize, Deserialize)]
2470struct CopyMetadata {
2471    creases: Vec<SelectedCreaseMetadata>,
2472}
2473
2474#[derive(Debug, Clone, Serialize, Deserialize)]
2475struct SelectedCreaseMetadata {
2476    range_relative_to_selection: Range<usize>,
2477    crease: CreaseMetadata,
2478}
2479
2480impl EventEmitter<EditorEvent> for TextThreadEditor {}
2481impl EventEmitter<SearchEvent> for TextThreadEditor {}
2482
2483impl Render for TextThreadEditor {
2484    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
2485        let language_model_selector = self.language_model_selector_menu_handle.clone();
2486
2487        v_flex()
2488            .key_context("ContextEditor")
2489            .capture_action(cx.listener(TextThreadEditor::cancel))
2490            .capture_action(cx.listener(TextThreadEditor::save))
2491            .capture_action(cx.listener(TextThreadEditor::copy))
2492            .capture_action(cx.listener(TextThreadEditor::cut))
2493            .capture_action(cx.listener(TextThreadEditor::paste))
2494            .capture_action(cx.listener(TextThreadEditor::cycle_message_role))
2495            .capture_action(cx.listener(TextThreadEditor::confirm_command))
2496            .on_action(cx.listener(TextThreadEditor::assist))
2497            .on_action(cx.listener(TextThreadEditor::split))
2498            .on_action(move |_: &ToggleModelSelector, window, cx| {
2499                language_model_selector.toggle(window, cx);
2500            })
2501            .size_full()
2502            .child(
2503                div()
2504                    .flex_grow()
2505                    .bg(cx.theme().colors().editor_background)
2506                    .child(self.editor.clone()),
2507            )
2508            .children(self.render_last_error(cx))
2509            .child(
2510                h_flex()
2511                    .relative()
2512                    .py_2()
2513                    .pl_1p5()
2514                    .pr_2()
2515                    .w_full()
2516                    .justify_between()
2517                    .border_t_1()
2518                    .border_color(cx.theme().colors().border_variant)
2519                    .bg(cx.theme().colors().editor_background)
2520                    .child(
2521                        h_flex()
2522                            .gap_0p5()
2523                            .child(self.render_inject_context_menu(cx))
2524                            .children(self.render_burn_mode_toggle(cx)),
2525                    )
2526                    .child(
2527                        h_flex()
2528                            .gap_2p5()
2529                            .children(self.render_remaining_tokens(cx))
2530                            .child(
2531                                h_flex()
2532                                    .gap_1()
2533                                    .child(self.render_language_model_selector(window, cx))
2534                                    .child(self.render_send_button(window, cx)),
2535                            ),
2536                    ),
2537            )
2538    }
2539}
2540
2541impl Focusable for TextThreadEditor {
2542    fn focus_handle(&self, cx: &App) -> FocusHandle {
2543        self.editor.focus_handle(cx)
2544    }
2545}
2546
2547impl Item for TextThreadEditor {
2548    type Event = editor::EditorEvent;
2549
2550    fn tab_content_text(&self, _detail: usize, cx: &App) -> SharedString {
2551        util::truncate_and_trailoff(&self.title(cx), MAX_TAB_TITLE_LEN).into()
2552    }
2553
2554    fn to_item_events(event: &Self::Event, mut f: impl FnMut(item::ItemEvent)) {
2555        match event {
2556            EditorEvent::Edited { .. } => {
2557                f(item::ItemEvent::Edit);
2558            }
2559            EditorEvent::TitleChanged => {
2560                f(item::ItemEvent::UpdateTab);
2561            }
2562            _ => {}
2563        }
2564    }
2565
2566    fn tab_tooltip_text(&self, cx: &App) -> Option<SharedString> {
2567        Some(self.title(cx).to_string().into())
2568    }
2569
2570    fn as_searchable(
2571        &self,
2572        handle: &Entity<Self>,
2573        _: &App,
2574    ) -> Option<Box<dyn SearchableItemHandle>> {
2575        Some(Box::new(handle.clone()))
2576    }
2577
2578    fn set_nav_history(
2579        &mut self,
2580        nav_history: pane::ItemNavHistory,
2581        window: &mut Window,
2582        cx: &mut Context<Self>,
2583    ) {
2584        self.editor.update(cx, |editor, cx| {
2585            Item::set_nav_history(editor, nav_history, window, cx)
2586        })
2587    }
2588
2589    fn navigate(
2590        &mut self,
2591        data: Box<dyn std::any::Any>,
2592        window: &mut Window,
2593        cx: &mut Context<Self>,
2594    ) -> bool {
2595        self.editor
2596            .update(cx, |editor, cx| Item::navigate(editor, data, window, cx))
2597    }
2598
2599    fn deactivated(&mut self, window: &mut Window, cx: &mut Context<Self>) {
2600        self.editor
2601            .update(cx, |editor, cx| Item::deactivated(editor, window, cx))
2602    }
2603
2604    fn act_as_type<'a>(
2605        &'a self,
2606        type_id: TypeId,
2607        self_handle: &'a Entity<Self>,
2608        _: &'a App,
2609    ) -> Option<gpui::AnyEntity> {
2610        if type_id == TypeId::of::<Self>() {
2611            Some(self_handle.clone().into())
2612        } else if type_id == TypeId::of::<Editor>() {
2613            Some(self.editor.clone().into())
2614        } else {
2615            None
2616        }
2617    }
2618
2619    fn include_in_nav_history() -> bool {
2620        false
2621    }
2622}
2623
2624impl SearchableItem for TextThreadEditor {
2625    type Match = <Editor as SearchableItem>::Match;
2626
2627    fn clear_matches(&mut self, window: &mut Window, cx: &mut Context<Self>) {
2628        self.editor.update(cx, |editor, cx| {
2629            editor.clear_matches(window, cx);
2630        });
2631    }
2632
2633    fn update_matches(
2634        &mut self,
2635        matches: &[Self::Match],
2636        active_match_index: Option<usize>,
2637        window: &mut Window,
2638        cx: &mut Context<Self>,
2639    ) {
2640        self.editor.update(cx, |editor, cx| {
2641            editor.update_matches(matches, active_match_index, window, cx)
2642        });
2643    }
2644
2645    fn query_suggestion(&mut self, window: &mut Window, cx: &mut Context<Self>) -> String {
2646        self.editor
2647            .update(cx, |editor, cx| editor.query_suggestion(window, cx))
2648    }
2649
2650    fn activate_match(
2651        &mut self,
2652        index: usize,
2653        matches: &[Self::Match],
2654        window: &mut Window,
2655        cx: &mut Context<Self>,
2656    ) {
2657        self.editor.update(cx, |editor, cx| {
2658            editor.activate_match(index, matches, window, cx);
2659        });
2660    }
2661
2662    fn select_matches(
2663        &mut self,
2664        matches: &[Self::Match],
2665        window: &mut Window,
2666        cx: &mut Context<Self>,
2667    ) {
2668        self.editor
2669            .update(cx, |editor, cx| editor.select_matches(matches, window, cx));
2670    }
2671
2672    fn replace(
2673        &mut self,
2674        identifier: &Self::Match,
2675        query: &project::search::SearchQuery,
2676        window: &mut Window,
2677        cx: &mut Context<Self>,
2678    ) {
2679        self.editor.update(cx, |editor, cx| {
2680            editor.replace(identifier, query, window, cx)
2681        });
2682    }
2683
2684    fn find_matches(
2685        &mut self,
2686        query: Arc<project::search::SearchQuery>,
2687        window: &mut Window,
2688        cx: &mut Context<Self>,
2689    ) -> Task<Vec<Self::Match>> {
2690        self.editor
2691            .update(cx, |editor, cx| editor.find_matches(query, window, cx))
2692    }
2693
2694    fn active_match_index(
2695        &mut self,
2696        direction: Direction,
2697        matches: &[Self::Match],
2698        window: &mut Window,
2699        cx: &mut Context<Self>,
2700    ) -> Option<usize> {
2701        self.editor.update(cx, |editor, cx| {
2702            editor.active_match_index(direction, matches, window, cx)
2703        })
2704    }
2705}
2706
2707impl FollowableItem for TextThreadEditor {
2708    fn remote_id(&self) -> Option<workspace::ViewId> {
2709        self.remote_id
2710    }
2711
2712    fn to_state_proto(&self, window: &Window, cx: &App) -> Option<proto::view::Variant> {
2713        let text_thread = self.text_thread.read(cx);
2714        Some(proto::view::Variant::ContextEditor(
2715            proto::view::ContextEditor {
2716                context_id: text_thread.id().to_proto(),
2717                editor: if let Some(proto::view::Variant::Editor(proto)) =
2718                    self.editor.read(cx).to_state_proto(window, cx)
2719                {
2720                    Some(proto)
2721                } else {
2722                    None
2723                },
2724            },
2725        ))
2726    }
2727
2728    fn from_state_proto(
2729        workspace: Entity<Workspace>,
2730        id: workspace::ViewId,
2731        state: &mut Option<proto::view::Variant>,
2732        window: &mut Window,
2733        cx: &mut App,
2734    ) -> Option<Task<Result<Entity<Self>>>> {
2735        let proto::view::Variant::ContextEditor(_) = state.as_ref()? else {
2736            return None;
2737        };
2738        let Some(proto::view::Variant::ContextEditor(state)) = state.take() else {
2739            unreachable!()
2740        };
2741
2742        let text_thread_id = TextThreadId::from_proto(state.context_id);
2743        let editor_state = state.editor?;
2744
2745        let project = workspace.read(cx).project().clone();
2746        let agent_panel_delegate = <dyn AgentPanelDelegate>::try_global(cx)?;
2747
2748        let text_thread_editor_task = workspace.update(cx, |workspace, cx| {
2749            agent_panel_delegate.open_remote_text_thread(workspace, text_thread_id, window, cx)
2750        });
2751
2752        Some(window.spawn(cx, async move |cx| {
2753            let text_thread_editor = text_thread_editor_task.await?;
2754            text_thread_editor
2755                .update_in(cx, |text_thread_editor, window, cx| {
2756                    text_thread_editor.remote_id = Some(id);
2757                    text_thread_editor.editor.update(cx, |editor, cx| {
2758                        editor.apply_update_proto(
2759                            &project,
2760                            proto::update_view::Variant::Editor(proto::update_view::Editor {
2761                                selections: editor_state.selections,
2762                                pending_selection: editor_state.pending_selection,
2763                                scroll_top_anchor: editor_state.scroll_top_anchor,
2764                                scroll_x: editor_state.scroll_y,
2765                                scroll_y: editor_state.scroll_y,
2766                                ..Default::default()
2767                            }),
2768                            window,
2769                            cx,
2770                        )
2771                    })
2772                })?
2773                .await?;
2774            Ok(text_thread_editor)
2775        }))
2776    }
2777
2778    fn to_follow_event(event: &Self::Event) -> Option<item::FollowEvent> {
2779        Editor::to_follow_event(event)
2780    }
2781
2782    fn add_event_to_update_proto(
2783        &self,
2784        event: &Self::Event,
2785        update: &mut Option<proto::update_view::Variant>,
2786        window: &Window,
2787        cx: &App,
2788    ) -> bool {
2789        self.editor
2790            .read(cx)
2791            .add_event_to_update_proto(event, update, window, cx)
2792    }
2793
2794    fn apply_update_proto(
2795        &mut self,
2796        project: &Entity<Project>,
2797        message: proto::update_view::Variant,
2798        window: &mut Window,
2799        cx: &mut Context<Self>,
2800    ) -> Task<Result<()>> {
2801        self.editor.update(cx, |editor, cx| {
2802            editor.apply_update_proto(project, message, window, cx)
2803        })
2804    }
2805
2806    fn is_project_item(&self, _window: &Window, _cx: &App) -> bool {
2807        true
2808    }
2809
2810    fn set_leader_id(
2811        &mut self,
2812        leader_id: Option<CollaboratorId>,
2813        window: &mut Window,
2814        cx: &mut Context<Self>,
2815    ) {
2816        self.editor
2817            .update(cx, |editor, cx| editor.set_leader_id(leader_id, window, cx))
2818    }
2819
2820    fn dedup(&self, existing: &Self, _window: &Window, cx: &App) -> Option<item::Dedup> {
2821        if existing.text_thread.read(cx).id() == self.text_thread.read(cx).id() {
2822            Some(item::Dedup::KeepExisting)
2823        } else {
2824            None
2825        }
2826    }
2827}
2828
2829enum PendingSlashCommand {}
2830
2831fn invoked_slash_command_fold_placeholder(
2832    command_id: InvokedSlashCommandId,
2833    text_thread: WeakEntity<TextThread>,
2834) -> FoldPlaceholder {
2835    FoldPlaceholder {
2836        constrain_width: false,
2837        merge_adjacent: false,
2838        render: Arc::new(move |fold_id, _, cx| {
2839            let Some(text_thread) = text_thread.upgrade() else {
2840                return Empty.into_any();
2841            };
2842
2843            let Some(command) = text_thread.read(cx).invoked_slash_command(&command_id) else {
2844                return Empty.into_any();
2845            };
2846
2847            h_flex()
2848                .id(fold_id)
2849                .px_1()
2850                .ml_6()
2851                .gap_2()
2852                .bg(cx.theme().colors().surface_background)
2853                .rounded_sm()
2854                .child(Label::new(format!("/{}", command.name)))
2855                .map(|parent| match &command.status {
2856                    InvokedSlashCommandStatus::Running(_) => {
2857                        parent.child(Icon::new(IconName::ArrowCircle).with_rotate_animation(4))
2858                    }
2859                    InvokedSlashCommandStatus::Error(message) => parent.child(
2860                        Label::new(format!("error: {message}"))
2861                            .single_line()
2862                            .color(Color::Error),
2863                    ),
2864                    InvokedSlashCommandStatus::Finished => parent,
2865                })
2866                .into_any_element()
2867        }),
2868        type_tag: Some(TypeId::of::<PendingSlashCommand>()),
2869    }
2870}
2871
2872enum TokenState {
2873    NoTokensLeft {
2874        max_token_count: u64,
2875        token_count: u64,
2876    },
2877    HasMoreTokens {
2878        max_token_count: u64,
2879        token_count: u64,
2880        over_warn_threshold: bool,
2881    },
2882}
2883
2884fn token_state(text_thread: &Entity<TextThread>, cx: &App) -> Option<TokenState> {
2885    const WARNING_TOKEN_THRESHOLD: f32 = 0.8;
2886
2887    let model = LanguageModelRegistry::read_global(cx)
2888        .default_model()?
2889        .model;
2890    let token_count = text_thread.read(cx).token_count()?;
2891    let max_token_count =
2892        model.max_token_count_for_mode(text_thread.read(cx).completion_mode().into());
2893    let token_state = if max_token_count.saturating_sub(token_count) == 0 {
2894        TokenState::NoTokensLeft {
2895            max_token_count,
2896            token_count,
2897        }
2898    } else {
2899        let over_warn_threshold =
2900            token_count as f32 / max_token_count as f32 >= WARNING_TOKEN_THRESHOLD;
2901        TokenState::HasMoreTokens {
2902            max_token_count,
2903            token_count,
2904            over_warn_threshold,
2905        }
2906    };
2907    Some(token_state)
2908}
2909
2910fn size_for_image(data: &RenderImage, max_size: Size<Pixels>) -> Size<Pixels> {
2911    let image_size = data
2912        .size(0)
2913        .map(|dimension| Pixels::from(u32::from(dimension)));
2914    let image_ratio = image_size.width / image_size.height;
2915    let bounds_ratio = max_size.width / max_size.height;
2916
2917    if image_size.width > max_size.width || image_size.height > max_size.height {
2918        if bounds_ratio > image_ratio {
2919            size(
2920                image_size.width * (max_size.height / image_size.height),
2921                max_size.height,
2922            )
2923        } else {
2924            size(
2925                max_size.width,
2926                image_size.height * (max_size.width / image_size.width),
2927            )
2928        }
2929    } else {
2930        size(image_size.width, image_size.height)
2931    }
2932}
2933
2934pub fn humanize_token_count(count: u64) -> String {
2935    match count {
2936        0..=999 => count.to_string(),
2937        1000..=9999 => {
2938            let thousands = count / 1000;
2939            let hundreds = (count % 1000 + 50) / 100;
2940            if hundreds == 0 {
2941                format!("{}k", thousands)
2942            } else if hundreds == 10 {
2943                format!("{}k", thousands + 1)
2944            } else {
2945                format!("{}.{}k", thousands, hundreds)
2946            }
2947        }
2948        1_000_000..=9_999_999 => {
2949            let millions = count / 1_000_000;
2950            let hundred_thousands = (count % 1_000_000 + 50_000) / 100_000;
2951            if hundred_thousands == 0 {
2952                format!("{}M", millions)
2953            } else if hundred_thousands == 10 {
2954                format!("{}M", millions + 1)
2955            } else {
2956                format!("{}.{}M", millions, hundred_thousands)
2957            }
2958        }
2959        10_000_000.. => format!("{}M", (count + 500_000) / 1_000_000),
2960        _ => format!("{}k", (count + 500) / 1000),
2961    }
2962}
2963
2964pub fn make_lsp_adapter_delegate(
2965    project: &Entity<Project>,
2966    cx: &mut App,
2967) -> Result<Option<Arc<dyn LspAdapterDelegate>>> {
2968    project.update(cx, |project, cx| {
2969        // TODO: Find the right worktree.
2970        let Some(worktree) = project.worktrees(cx).next() else {
2971            return Ok(None::<Arc<dyn LspAdapterDelegate>>);
2972        };
2973        let http_client = project.client().http_client();
2974        project.lsp_store().update(cx, |_, cx| {
2975            Ok(Some(LocalLspAdapterDelegate::new(
2976                project.languages().clone(),
2977                project.environment(),
2978                cx.weak_entity(),
2979                &worktree,
2980                http_client,
2981                project.fs().clone(),
2982                cx,
2983            ) as Arc<dyn LspAdapterDelegate>))
2984        })
2985    })
2986}
2987
2988#[cfg(test)]
2989mod tests {
2990    use super::*;
2991    use editor::{MultiBufferOffset, SelectionEffects};
2992    use fs::FakeFs;
2993    use gpui::{App, TestAppContext, VisualTestContext};
2994    use indoc::indoc;
2995    use language::{Buffer, LanguageRegistry};
2996    use pretty_assertions::assert_eq;
2997    use prompt_store::PromptBuilder;
2998    use text::OffsetRangeExt;
2999    use unindent::Unindent;
3000    use util::path;
3001
3002    #[gpui::test]
3003    async fn test_copy_paste_whole_message(cx: &mut TestAppContext) {
3004        let (context, text_thread_editor, mut cx) = setup_text_thread_editor_text(vec![
3005            (Role::User, "What is the Zed editor?"),
3006            (
3007                Role::Assistant,
3008                "Zed is a modern, high-performance code editor designed from the ground up for speed and collaboration.",
3009            ),
3010            (Role::User, ""),
3011        ],cx).await;
3012
3013        // Select & Copy whole user message
3014        assert_copy_paste_text_thread_editor(
3015            &text_thread_editor,
3016            message_range(&context, 0, &mut cx),
3017            indoc! {"
3018                What is the Zed editor?
3019                Zed is a modern, high-performance code editor designed from the ground up for speed and collaboration.
3020                What is the Zed editor?
3021            "},
3022            &mut cx,
3023        );
3024
3025        // Select & Copy whole assistant message
3026        assert_copy_paste_text_thread_editor(
3027            &text_thread_editor,
3028            message_range(&context, 1, &mut cx),
3029            indoc! {"
3030                What is the Zed editor?
3031                Zed is a modern, high-performance code editor designed from the ground up for speed and collaboration.
3032                What is the Zed editor?
3033                Zed is a modern, high-performance code editor designed from the ground up for speed and collaboration.
3034            "},
3035            &mut cx,
3036        );
3037    }
3038
3039    #[gpui::test]
3040    async fn test_copy_paste_no_selection(cx: &mut TestAppContext) {
3041        let (context, text_thread_editor, mut cx) = setup_text_thread_editor_text(
3042            vec![
3043                (Role::User, "user1"),
3044                (Role::Assistant, "assistant1"),
3045                (Role::Assistant, "assistant2"),
3046                (Role::User, ""),
3047            ],
3048            cx,
3049        )
3050        .await;
3051
3052        // Copy and paste first assistant message
3053        let message_2_range = message_range(&context, 1, &mut cx);
3054        assert_copy_paste_text_thread_editor(
3055            &text_thread_editor,
3056            message_2_range.start..message_2_range.start,
3057            indoc! {"
3058                user1
3059                assistant1
3060                assistant2
3061                assistant1
3062            "},
3063            &mut cx,
3064        );
3065
3066        // Copy and cut second assistant message
3067        let message_3_range = message_range(&context, 2, &mut cx);
3068        assert_copy_paste_text_thread_editor(
3069            &text_thread_editor,
3070            message_3_range.start..message_3_range.start,
3071            indoc! {"
3072                user1
3073                assistant1
3074                assistant2
3075                assistant1
3076                assistant2
3077            "},
3078            &mut cx,
3079        );
3080    }
3081
3082    #[gpui::test]
3083    fn test_find_code_blocks(cx: &mut App) {
3084        let markdown = languages::language("markdown", tree_sitter_md::LANGUAGE.into());
3085
3086        let buffer = cx.new(|cx| {
3087            let text = r#"
3088                line 0
3089                line 1
3090                ```rust
3091                fn main() {}
3092                ```
3093                line 5
3094                line 6
3095                line 7
3096                ```go
3097                func main() {}
3098                ```
3099                line 11
3100                ```
3101                this is plain text code block
3102                ```
3103
3104                ```go
3105                func another() {}
3106                ```
3107                line 19
3108            "#
3109            .unindent();
3110            let mut buffer = Buffer::local(text, cx);
3111            buffer.set_language(Some(markdown.clone()), cx);
3112            buffer
3113        });
3114        let snapshot = buffer.read(cx).snapshot();
3115
3116        let code_blocks = vec![
3117            Point::new(3, 0)..Point::new(4, 0),
3118            Point::new(9, 0)..Point::new(10, 0),
3119            Point::new(13, 0)..Point::new(14, 0),
3120            Point::new(17, 0)..Point::new(18, 0),
3121        ]
3122        .into_iter()
3123        .map(|range| snapshot.point_to_offset(range.start)..snapshot.point_to_offset(range.end))
3124        .collect::<Vec<_>>();
3125
3126        let expected_results = vec![
3127            (0, None),
3128            (1, None),
3129            (2, Some(code_blocks[0].clone())),
3130            (3, Some(code_blocks[0].clone())),
3131            (4, Some(code_blocks[0].clone())),
3132            (5, None),
3133            (6, None),
3134            (7, None),
3135            (8, Some(code_blocks[1].clone())),
3136            (9, Some(code_blocks[1].clone())),
3137            (10, Some(code_blocks[1].clone())),
3138            (11, None),
3139            (12, Some(code_blocks[2].clone())),
3140            (13, Some(code_blocks[2].clone())),
3141            (14, Some(code_blocks[2].clone())),
3142            (15, None),
3143            (16, Some(code_blocks[3].clone())),
3144            (17, Some(code_blocks[3].clone())),
3145            (18, Some(code_blocks[3].clone())),
3146            (19, None),
3147        ];
3148
3149        for (row, expected) in expected_results {
3150            let offset = snapshot.point_to_offset(Point::new(row, 0));
3151            let range = find_surrounding_code_block(&snapshot, offset);
3152            assert_eq!(range, expected, "unexpected result on row {:?}", row);
3153        }
3154    }
3155
3156    async fn setup_text_thread_editor_text(
3157        messages: Vec<(Role, &str)>,
3158        cx: &mut TestAppContext,
3159    ) -> (
3160        Entity<TextThread>,
3161        Entity<TextThreadEditor>,
3162        VisualTestContext,
3163    ) {
3164        cx.update(init_test);
3165
3166        let fs = FakeFs::new(cx.executor());
3167        let text_thread = create_text_thread_with_messages(messages, cx);
3168
3169        let project = Project::test(fs.clone(), [path!("/test").as_ref()], cx).await;
3170        let window = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
3171        let workspace = window.root(cx).unwrap();
3172        let mut cx = VisualTestContext::from_window(*window, cx);
3173
3174        let text_thread_editor = window
3175            .update(&mut cx, |_, window, cx| {
3176                cx.new(|cx| {
3177                    TextThreadEditor::for_text_thread(
3178                        text_thread.clone(),
3179                        fs,
3180                        workspace.downgrade(),
3181                        project,
3182                        None,
3183                        window,
3184                        cx,
3185                    )
3186                })
3187            })
3188            .unwrap();
3189
3190        (text_thread, text_thread_editor, cx)
3191    }
3192
3193    fn message_range(
3194        text_thread: &Entity<TextThread>,
3195        message_ix: usize,
3196        cx: &mut TestAppContext,
3197    ) -> Range<MultiBufferOffset> {
3198        let range = text_thread.update(cx, |text_thread, cx| {
3199            text_thread
3200                .messages(cx)
3201                .nth(message_ix)
3202                .unwrap()
3203                .anchor_range
3204                .to_offset(&text_thread.buffer().read(cx).snapshot())
3205        });
3206        MultiBufferOffset(range.start)..MultiBufferOffset(range.end)
3207    }
3208
3209    fn assert_copy_paste_text_thread_editor<T: editor::ToOffset>(
3210        text_thread_editor: &Entity<TextThreadEditor>,
3211        range: Range<T>,
3212        expected_text: &str,
3213        cx: &mut VisualTestContext,
3214    ) {
3215        text_thread_editor.update_in(cx, |text_thread_editor, window, cx| {
3216            text_thread_editor.editor.update(cx, |editor, cx| {
3217                editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
3218                    s.select_ranges([range])
3219                });
3220            });
3221
3222            text_thread_editor.copy(&Default::default(), window, cx);
3223
3224            text_thread_editor.editor.update(cx, |editor, cx| {
3225                editor.move_to_end(&Default::default(), window, cx);
3226            });
3227
3228            text_thread_editor.paste(&Default::default(), window, cx);
3229
3230            text_thread_editor.editor.update(cx, |editor, cx| {
3231                assert_eq!(editor.text(cx), expected_text);
3232            });
3233        });
3234    }
3235
3236    fn create_text_thread_with_messages(
3237        mut messages: Vec<(Role, &str)>,
3238        cx: &mut TestAppContext,
3239    ) -> Entity<TextThread> {
3240        let registry = Arc::new(LanguageRegistry::test(cx.executor()));
3241        let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3242        cx.new(|cx| {
3243            let mut text_thread = TextThread::local(
3244                registry,
3245                None,
3246                None,
3247                prompt_builder.clone(),
3248                Arc::new(SlashCommandWorkingSet::default()),
3249                cx,
3250            );
3251            let mut message_1 = text_thread.messages(cx).next().unwrap();
3252            let (role, text) = messages.remove(0);
3253
3254            loop {
3255                if role == message_1.role {
3256                    text_thread.buffer().update(cx, |buffer, cx| {
3257                        buffer.edit([(message_1.offset_range, text)], None, cx);
3258                    });
3259                    break;
3260                }
3261                let mut ids = HashSet::default();
3262                ids.insert(message_1.id);
3263                text_thread.cycle_message_roles(ids, cx);
3264                message_1 = text_thread.messages(cx).next().unwrap();
3265            }
3266
3267            let mut last_message_id = message_1.id;
3268            for (role, text) in messages {
3269                text_thread.insert_message_after(last_message_id, role, MessageStatus::Done, cx);
3270                let message = text_thread.messages(cx).last().unwrap();
3271                last_message_id = message.id;
3272                text_thread.buffer().update(cx, |buffer, cx| {
3273                    buffer.edit([(message.offset_range, text)], None, cx);
3274                })
3275            }
3276
3277            text_thread
3278        })
3279    }
3280
3281    fn init_test(cx: &mut App) {
3282        let settings_store = SettingsStore::test(cx);
3283        prompt_store::init(cx);
3284        LanguageModelRegistry::test(cx);
3285        cx.set_global(settings_store);
3286
3287        theme::init(theme::LoadThemes::JustBase, cx);
3288    }
3289}