active_thread.rs

   1use crate::context::{AgentContextHandle, RULES_ICON};
   2use crate::context_picker::{ContextPicker, MentionLink};
   3use crate::context_store::ContextStore;
   4use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
   5use crate::thread::{
   6    LastRestoreCheckpoint, MessageId, MessageSegment, Thread, ThreadError, ThreadEvent,
   7    ThreadFeedback,
   8};
   9use crate::thread_store::{RulesLoadingError, ThreadStore};
  10use crate::tool_use::{PendingToolUseStatus, ToolUse};
  11use crate::ui::{
  12    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
  13};
  14use crate::{AssistantPanel, OpenActiveThreadAsMarkdown};
  15use anyhow::Context as _;
  16use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
  17use assistant_tool::ToolUseStatus;
  18use collections::{HashMap, HashSet};
  19use editor::actions::{MoveUp, Paste};
  20use editor::scroll::Autoscroll;
  21use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer};
  22use gpui::{
  23    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardEntry,
  24    ClipboardItem, DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla,
  25    ListAlignment, ListState, MouseButton, PlatformDisplay, ScrollHandle, Stateful,
  26    StyleRefinement, Subscription, Task, TextStyle, TextStyleRefinement, Transformation,
  27    UnderlineStyle, WeakEntity, WindowHandle, linear_color_stop, linear_gradient, list, percentage,
  28    pulsating_between,
  29};
  30use language::{Buffer, Language, LanguageRegistry};
  31use language_model::{
  32    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, Role, StopReason,
  33};
  34use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  35use markdown::{HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
  36use project::{ProjectEntryId, ProjectItem as _};
  37use rope::Point;
  38use settings::{Settings as _, update_settings_file};
  39use std::ffi::OsStr;
  40use std::path::Path;
  41use std::rc::Rc;
  42use std::sync::Arc;
  43use std::time::Duration;
  44use text::ToPoint;
  45use theme::ThemeSettings;
  46use ui::{
  47    Disclosure, IconButton, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize,
  48    Tooltip, prelude::*,
  49};
  50use util::ResultExt as _;
  51use util::markdown::MarkdownCodeBlock;
  52use workspace::Workspace;
  53use zed_actions::assistant::OpenRulesLibrary;
  54
  55pub struct ActiveThread {
  56    context_store: Entity<ContextStore>,
  57    language_registry: Arc<LanguageRegistry>,
  58    thread_store: Entity<ThreadStore>,
  59    thread: Entity<Thread>,
  60    workspace: WeakEntity<Workspace>,
  61    save_thread_task: Option<Task<()>>,
  62    messages: Vec<MessageId>,
  63    list_state: ListState,
  64    scrollbar_state: ScrollbarState,
  65    show_scrollbar: bool,
  66    hide_scrollbar_task: Option<Task<()>>,
  67    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  68    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  69    editing_message: Option<(MessageId, EditingMessageState)>,
  70    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  71    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  72    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  73    last_error: Option<ThreadError>,
  74    notifications: Vec<WindowHandle<AgentNotification>>,
  75    copied_code_block_ids: HashSet<(MessageId, usize)>,
  76    _subscriptions: Vec<Subscription>,
  77    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  78    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  79    _load_edited_message_context_task: Option<Task<()>>,
  80}
  81
  82struct RenderedMessage {
  83    language_registry: Arc<LanguageRegistry>,
  84    segments: Vec<RenderedMessageSegment>,
  85}
  86
  87#[derive(Clone)]
  88struct RenderedToolUse {
  89    label: Entity<Markdown>,
  90    input: Entity<Markdown>,
  91    output: Entity<Markdown>,
  92}
  93
  94impl RenderedMessage {
  95    fn from_segments(
  96        segments: &[MessageSegment],
  97        language_registry: Arc<LanguageRegistry>,
  98        cx: &mut App,
  99    ) -> Self {
 100        let mut this = Self {
 101            language_registry,
 102            segments: Vec::with_capacity(segments.len()),
 103        };
 104        for segment in segments {
 105            this.push_segment(segment, cx);
 106        }
 107        this
 108    }
 109
 110    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 111        if let Some(RenderedMessageSegment::Thinking {
 112            content,
 113            scroll_handle,
 114        }) = self.segments.last_mut()
 115        {
 116            content.update(cx, |markdown, cx| {
 117                markdown.append(text, cx);
 118            });
 119            scroll_handle.scroll_to_bottom();
 120        } else {
 121            self.segments.push(RenderedMessageSegment::Thinking {
 122                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 123                scroll_handle: ScrollHandle::default(),
 124            });
 125        }
 126    }
 127
 128    fn append_text(&mut self, text: &String, cx: &mut App) {
 129        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 130            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 131        } else {
 132            self.segments
 133                .push(RenderedMessageSegment::Text(parse_markdown(
 134                    SharedString::from(text),
 135                    self.language_registry.clone(),
 136                    cx,
 137                )));
 138        }
 139    }
 140
 141    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 142        match segment {
 143            MessageSegment::Thinking { text, .. } => {
 144                self.segments.push(RenderedMessageSegment::Thinking {
 145                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 146                    scroll_handle: ScrollHandle::default(),
 147                })
 148            }
 149            MessageSegment::Text(text) => {
 150                self.segments
 151                    .push(RenderedMessageSegment::Text(parse_markdown(
 152                        text.into(),
 153                        self.language_registry.clone(),
 154                        cx,
 155                    )))
 156            }
 157            MessageSegment::RedactedThinking(_) => {}
 158        };
 159    }
 160}
 161
 162enum RenderedMessageSegment {
 163    Thinking {
 164        content: Entity<Markdown>,
 165        scroll_handle: ScrollHandle,
 166    },
 167    Text(Entity<Markdown>),
 168}
 169
 170fn parse_markdown(
 171    text: SharedString,
 172    language_registry: Arc<LanguageRegistry>,
 173    cx: &mut App,
 174) -> Entity<Markdown> {
 175    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 176}
 177
 178fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 179    let theme_settings = ThemeSettings::get_global(cx);
 180    let colors = cx.theme().colors();
 181    let ui_font_size = TextSize::Default.rems(cx);
 182    let buffer_font_size = TextSize::Small.rems(cx);
 183    let mut text_style = window.text_style();
 184
 185    text_style.refine(&TextStyleRefinement {
 186        font_family: Some(theme_settings.ui_font.family.clone()),
 187        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 188        font_features: Some(theme_settings.ui_font.features.clone()),
 189        font_size: Some(ui_font_size.into()),
 190        color: Some(cx.theme().colors().text),
 191        ..Default::default()
 192    });
 193
 194    MarkdownStyle {
 195        base_text_style: text_style.clone(),
 196        syntax: cx.theme().syntax().clone(),
 197        selection_background_color: cx.theme().players().local().selection,
 198        code_block_overflow_x_scroll: true,
 199        table_overflow_x_scroll: true,
 200        heading_level_styles: Some(HeadingLevelStyles {
 201            h1: Some(TextStyleRefinement {
 202                font_size: Some(rems(1.15).into()),
 203                ..Default::default()
 204            }),
 205            h2: Some(TextStyleRefinement {
 206                font_size: Some(rems(1.1).into()),
 207                ..Default::default()
 208            }),
 209            h3: Some(TextStyleRefinement {
 210                font_size: Some(rems(1.05).into()),
 211                ..Default::default()
 212            }),
 213            h4: Some(TextStyleRefinement {
 214                font_size: Some(rems(1.).into()),
 215                ..Default::default()
 216            }),
 217            h5: Some(TextStyleRefinement {
 218                font_size: Some(rems(0.95).into()),
 219                ..Default::default()
 220            }),
 221            h6: Some(TextStyleRefinement {
 222                font_size: Some(rems(0.875).into()),
 223                ..Default::default()
 224            }),
 225        }),
 226        code_block: StyleRefinement {
 227            padding: EdgesRefinement {
 228                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 229                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 230                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 231                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 232            },
 233            background: Some(colors.editor_background.into()),
 234            text: Some(TextStyleRefinement {
 235                font_family: Some(theme_settings.buffer_font.family.clone()),
 236                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 237                font_features: Some(theme_settings.buffer_font.features.clone()),
 238                font_size: Some(buffer_font_size.into()),
 239                ..Default::default()
 240            }),
 241            ..Default::default()
 242        },
 243        inline_code: TextStyleRefinement {
 244            font_family: Some(theme_settings.buffer_font.family.clone()),
 245            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 246            font_features: Some(theme_settings.buffer_font.features.clone()),
 247            font_size: Some(buffer_font_size.into()),
 248            background_color: Some(colors.editor_foreground.opacity(0.08)),
 249            ..Default::default()
 250        },
 251        link: TextStyleRefinement {
 252            background_color: Some(colors.editor_foreground.opacity(0.025)),
 253            underline: Some(UnderlineStyle {
 254                color: Some(colors.text_accent.opacity(0.5)),
 255                thickness: px(1.),
 256                ..Default::default()
 257            }),
 258            ..Default::default()
 259        },
 260        link_callback: Some(Rc::new(move |url, cx| {
 261            if MentionLink::is_valid(url) {
 262                let colors = cx.theme().colors();
 263                Some(TextStyleRefinement {
 264                    background_color: Some(colors.element_background),
 265                    ..Default::default()
 266                })
 267            } else {
 268                None
 269            }
 270        })),
 271        ..Default::default()
 272    }
 273}
 274
 275fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 276    let theme_settings = ThemeSettings::get_global(cx);
 277    let colors = cx.theme().colors();
 278    let ui_font_size = TextSize::Default.rems(cx);
 279    let buffer_font_size = TextSize::Small.rems(cx);
 280    let mut text_style = window.text_style();
 281
 282    text_style.refine(&TextStyleRefinement {
 283        font_family: Some(theme_settings.ui_font.family.clone()),
 284        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 285        font_features: Some(theme_settings.ui_font.features.clone()),
 286        font_size: Some(ui_font_size.into()),
 287        color: Some(cx.theme().colors().text),
 288        ..Default::default()
 289    });
 290
 291    MarkdownStyle {
 292        base_text_style: text_style,
 293        syntax: cx.theme().syntax().clone(),
 294        selection_background_color: cx.theme().players().local().selection,
 295        code_block_overflow_x_scroll: true,
 296        code_block: StyleRefinement {
 297            margin: EdgesRefinement::default(),
 298            padding: EdgesRefinement::default(),
 299            background: Some(colors.editor_background.into()),
 300            border_color: None,
 301            border_widths: EdgesRefinement::default(),
 302            text: Some(TextStyleRefinement {
 303                font_family: Some(theme_settings.buffer_font.family.clone()),
 304                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 305                font_features: Some(theme_settings.buffer_font.features.clone()),
 306                font_size: Some(buffer_font_size.into()),
 307                ..Default::default()
 308            }),
 309            ..Default::default()
 310        },
 311        inline_code: TextStyleRefinement {
 312            font_family: Some(theme_settings.buffer_font.family.clone()),
 313            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 314            font_features: Some(theme_settings.buffer_font.features.clone()),
 315            font_size: Some(TextSize::XSmall.rems(cx).into()),
 316            ..Default::default()
 317        },
 318        heading: StyleRefinement {
 319            text: Some(TextStyleRefinement {
 320                font_size: Some(ui_font_size.into()),
 321                ..Default::default()
 322            }),
 323            ..Default::default()
 324        },
 325        ..Default::default()
 326    }
 327}
 328
 329const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 10;
 330
 331fn render_markdown_code_block(
 332    message_id: MessageId,
 333    ix: usize,
 334    kind: &CodeBlockKind,
 335    parsed_markdown: &ParsedMarkdown,
 336    metadata: CodeBlockMetadata,
 337    active_thread: Entity<ActiveThread>,
 338    workspace: WeakEntity<Workspace>,
 339    _window: &Window,
 340    cx: &App,
 341) -> Div {
 342    let label = match kind {
 343        CodeBlockKind::Indented => None,
 344        CodeBlockKind::Fenced => Some(
 345            h_flex()
 346                .gap_1()
 347                .child(
 348                    Icon::new(IconName::Code)
 349                        .color(Color::Muted)
 350                        .size(IconSize::XSmall),
 351                )
 352                .child(Label::new("untitled").size(LabelSize::Small))
 353                .into_any_element(),
 354        ),
 355        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 356            parsed_markdown.languages_by_name.get(raw_language_name),
 357            raw_language_name.clone(),
 358            cx,
 359        )),
 360        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 361            // We tell the model to use /dev/null for the path instead of using ```language
 362            // because otherwise it consistently fails to use code citations.
 363            if path_range.path.starts_with("/dev/null") {
 364                let ext = path_range
 365                    .path
 366                    .extension()
 367                    .and_then(OsStr::to_str)
 368                    .map(|str| SharedString::new(str.to_string()))
 369                    .unwrap_or_default();
 370
 371                render_code_language(
 372                    parsed_markdown
 373                        .languages_by_path
 374                        .get(&path_range.path)
 375                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 376                    ext,
 377                    cx,
 378                )
 379            } else {
 380                let content = if let Some(parent) = path_range.path.parent() {
 381                    h_flex()
 382                        .ml_1()
 383                        .gap_1()
 384                        .child(
 385                            Label::new(file_name.to_string_lossy().to_string())
 386                                .size(LabelSize::Small),
 387                        )
 388                        .child(
 389                            Label::new(parent.to_string_lossy().to_string())
 390                                .color(Color::Muted)
 391                                .size(LabelSize::Small),
 392                        )
 393                        .into_any_element()
 394                } else {
 395                    Label::new(path_range.path.to_string_lossy().to_string())
 396                        .size(LabelSize::Small)
 397                        .ml_1()
 398                        .into_any_element()
 399                };
 400
 401                h_flex()
 402                    .id(("code-block-header-label", ix))
 403                    .w_full()
 404                    .max_w_full()
 405                    .px_1()
 406                    .gap_0p5()
 407                    .cursor_pointer()
 408                    .rounded_sm()
 409                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 410                    .tooltip(Tooltip::text("Jump to File"))
 411                    .child(
 412                        h_flex()
 413                            .gap_0p5()
 414                            .children(
 415                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 416                                    .map(Icon::from_path)
 417                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 418                            )
 419                            .child(content)
 420                            .child(
 421                                Icon::new(IconName::ArrowUpRight)
 422                                    .size(IconSize::XSmall)
 423                                    .color(Color::Ignored),
 424                            ),
 425                    )
 426                    .on_click({
 427                        let path_range = path_range.clone();
 428                        move |_, window, cx| {
 429                            workspace
 430                                .update(cx, {
 431                                    |workspace, cx| {
 432                                        let Some(project_path) = workspace
 433                                            .project()
 434                                            .read(cx)
 435                                            .find_project_path(&path_range.path, cx)
 436                                        else {
 437                                            return;
 438                                        };
 439                                        let Some(target) = path_range.range.as_ref().map(|range| {
 440                                            Point::new(
 441                                                // Line number is 1-based
 442                                                range.start.line.saturating_sub(1),
 443                                                range.start.col.unwrap_or(0),
 444                                            )
 445                                        }) else {
 446                                            return;
 447                                        };
 448                                        let open_task = workspace.open_path(
 449                                            project_path,
 450                                            None,
 451                                            true,
 452                                            window,
 453                                            cx,
 454                                        );
 455                                        window
 456                                            .spawn(cx, async move |cx| {
 457                                                let item = open_task.await?;
 458                                                if let Some(active_editor) =
 459                                                    item.downcast::<Editor>()
 460                                                {
 461                                                    active_editor
 462                                                        .update_in(cx, |editor, window, cx| {
 463                                                            editor.go_to_singleton_buffer_point(
 464                                                                target, window, cx,
 465                                                            );
 466                                                        })
 467                                                        .ok();
 468                                                }
 469                                                anyhow::Ok(())
 470                                            })
 471                                            .detach_and_log_err(cx);
 472                                    }
 473                                })
 474                                .ok();
 475                        }
 476                    })
 477                    .into_any_element()
 478            }
 479        }),
 480    };
 481
 482    let codeblock_was_copied = active_thread
 483        .read(cx)
 484        .copied_code_block_ids
 485        .contains(&(message_id, ix));
 486
 487    let is_expanded = active_thread
 488        .read(cx)
 489        .expanded_code_blocks
 490        .get(&(message_id, ix))
 491        .copied()
 492        .unwrap_or(true);
 493
 494    let codeblock_header_bg = cx
 495        .theme()
 496        .colors()
 497        .element_background
 498        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 499
 500    let codeblock_header = h_flex()
 501        .py_1()
 502        .pl_1p5()
 503        .pr_1()
 504        .gap_1()
 505        .justify_between()
 506        .border_b_1()
 507        .border_color(cx.theme().colors().border.opacity(0.6))
 508        .bg(codeblock_header_bg)
 509        .rounded_t_md()
 510        .children(label)
 511        .child(
 512            h_flex()
 513                .visible_on_hover("codeblock_container")
 514                .gap_1()
 515                .child(
 516                    IconButton::new(
 517                        ("copy-markdown-code", ix),
 518                        if codeblock_was_copied {
 519                            IconName::Check
 520                        } else {
 521                            IconName::Copy
 522                        },
 523                    )
 524                    .icon_color(Color::Muted)
 525                    .shape(ui::IconButtonShape::Square)
 526                    .tooltip(Tooltip::text("Copy Code"))
 527                    .on_click({
 528                        let active_thread = active_thread.clone();
 529                        let parsed_markdown = parsed_markdown.clone();
 530                        let code_block_range = metadata.content_range.clone();
 531                        move |_event, _window, cx| {
 532                            active_thread.update(cx, |this, cx| {
 533                                this.copied_code_block_ids.insert((message_id, ix));
 534
 535                                let code =
 536                                    parsed_markdown.source()[code_block_range.clone()].to_string();
 537                                cx.write_to_clipboard(ClipboardItem::new_string(code));
 538
 539                                cx.spawn(async move |this, cx| {
 540                                    cx.background_executor().timer(Duration::from_secs(2)).await;
 541
 542                                    cx.update(|cx| {
 543                                        this.update(cx, |this, cx| {
 544                                            this.copied_code_block_ids.remove(&(message_id, ix));
 545                                            cx.notify();
 546                                        })
 547                                    })
 548                                    .ok();
 549                                })
 550                                .detach();
 551                            });
 552                        }
 553                    }),
 554                )
 555                .when(
 556                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 557                    |header| {
 558                        header.child(
 559                            IconButton::new(
 560                                ("expand-collapse-code", ix),
 561                                if is_expanded {
 562                                    IconName::ChevronUp
 563                                } else {
 564                                    IconName::ChevronDown
 565                                },
 566                            )
 567                            .icon_color(Color::Muted)
 568                            .shape(ui::IconButtonShape::Square)
 569                            .tooltip(Tooltip::text(if is_expanded {
 570                                "Collapse Code"
 571                            } else {
 572                                "Expand Code"
 573                            }))
 574                            .on_click({
 575                                let active_thread = active_thread.clone();
 576                                move |_event, _window, cx| {
 577                                    active_thread.update(cx, |this, cx| {
 578                                        let is_expanded = this
 579                                            .expanded_code_blocks
 580                                            .entry((message_id, ix))
 581                                            .or_insert(true);
 582                                        *is_expanded = !*is_expanded;
 583                                        cx.notify();
 584                                    });
 585                                }
 586                            }),
 587                        )
 588                    },
 589                ),
 590        );
 591
 592    v_flex()
 593        .group("codeblock_container")
 594        .my_2()
 595        .overflow_hidden()
 596        .rounded_lg()
 597        .border_1()
 598        .border_color(cx.theme().colors().border.opacity(0.6))
 599        .bg(cx.theme().colors().editor_background)
 600        .child(codeblock_header)
 601        .when(
 602            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 603            |this| {
 604                if is_expanded {
 605                    this.h_full()
 606                } else {
 607                    this.max_h_80()
 608                }
 609            },
 610        )
 611}
 612
 613fn render_code_language(
 614    language: Option<&Arc<Language>>,
 615    name_fallback: SharedString,
 616    cx: &App,
 617) -> AnyElement {
 618    let icon_path = language.and_then(|language| {
 619        language
 620            .config()
 621            .matcher
 622            .path_suffixes
 623            .iter()
 624            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 625            .map(Icon::from_path)
 626    });
 627
 628    let language_label = language
 629        .map(|language| language.name().into())
 630        .unwrap_or(name_fallback);
 631
 632    h_flex()
 633        .gap_1()
 634        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::Small)))
 635        .child(Label::new(language_label).size(LabelSize::Small))
 636        .into_any_element()
 637}
 638
 639fn open_markdown_link(
 640    text: SharedString,
 641    workspace: WeakEntity<Workspace>,
 642    window: &mut Window,
 643    cx: &mut App,
 644) {
 645    let Some(workspace) = workspace.upgrade() else {
 646        cx.open_url(&text);
 647        return;
 648    };
 649
 650    match MentionLink::try_parse(&text, &workspace, cx) {
 651        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 652            if entry.is_dir() {
 653                workspace.project().update(cx, |_, cx| {
 654                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 655                })
 656            } else {
 657                workspace
 658                    .open_path(path, None, true, window, cx)
 659                    .detach_and_log_err(cx);
 660            }
 661        }),
 662        Some(MentionLink::Symbol(path, symbol_name)) => {
 663            let open_task = workspace.update(cx, |workspace, cx| {
 664                workspace.open_path(path, None, true, window, cx)
 665            });
 666            window
 667                .spawn(cx, async move |cx| {
 668                    let active_editor = open_task
 669                        .await?
 670                        .downcast::<Editor>()
 671                        .context("Item is not an editor")?;
 672                    active_editor.update_in(cx, |editor, window, cx| {
 673                        let symbol_range = editor
 674                            .buffer()
 675                            .read(cx)
 676                            .snapshot(cx)
 677                            .outline(None)
 678                            .and_then(|outline| {
 679                                outline
 680                                    .find_most_similar(&symbol_name)
 681                                    .map(|(_, item)| item.range.clone())
 682                            })
 683                            .context("Could not find matching symbol")?;
 684
 685                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 686                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 687                        });
 688                        anyhow::Ok(())
 689                    })
 690                })
 691                .detach_and_log_err(cx);
 692        }
 693        Some(MentionLink::Selection(path, line_range)) => {
 694            let open_task = workspace.update(cx, |workspace, cx| {
 695                workspace.open_path(path, None, true, window, cx)
 696            });
 697            window
 698                .spawn(cx, async move |cx| {
 699                    let active_editor = open_task
 700                        .await?
 701                        .downcast::<Editor>()
 702                        .context("Item is not an editor")?;
 703                    active_editor.update_in(cx, |editor, window, cx| {
 704                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 705                            s.select_ranges([Point::new(line_range.start as u32, 0)
 706                                ..Point::new(line_range.start as u32, 0)])
 707                        });
 708                        anyhow::Ok(())
 709                    })
 710                })
 711                .detach_and_log_err(cx);
 712        }
 713        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 714            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 715                panel.update(cx, |panel, cx| {
 716                    panel
 717                        .open_thread_by_id(&thread_id, window, cx)
 718                        .detach_and_log_err(cx)
 719                });
 720            }
 721        }),
 722        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 723        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
 724            Box::new(OpenRulesLibrary {
 725                prompt_to_select: Some(prompt_id.0),
 726            }),
 727            cx,
 728        ),
 729        None => cx.open_url(&text),
 730    }
 731}
 732
 733struct EditingMessageState {
 734    editor: Entity<Editor>,
 735    context_strip: Entity<ContextStrip>,
 736    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 737    last_estimated_token_count: Option<usize>,
 738    _subscriptions: [Subscription; 2],
 739    _update_token_count_task: Option<Task<()>>,
 740}
 741
 742impl ActiveThread {
 743    pub fn new(
 744        thread: Entity<Thread>,
 745        thread_store: Entity<ThreadStore>,
 746        context_store: Entity<ContextStore>,
 747        language_registry: Arc<LanguageRegistry>,
 748        workspace: WeakEntity<Workspace>,
 749        window: &mut Window,
 750        cx: &mut Context<Self>,
 751    ) -> Self {
 752        let subscriptions = vec![
 753            cx.observe(&thread, |_, _, cx| cx.notify()),
 754            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 755            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 756        ];
 757
 758        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 759            let this = cx.entity().downgrade();
 760            move |ix, window: &mut Window, cx: &mut App| {
 761                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 762                    .unwrap()
 763            }
 764        });
 765        let mut this = Self {
 766            language_registry,
 767            thread_store,
 768            context_store,
 769            thread: thread.clone(),
 770            workspace,
 771            save_thread_task: None,
 772            messages: Vec::new(),
 773            rendered_messages_by_id: HashMap::default(),
 774            rendered_tool_uses: HashMap::default(),
 775            expanded_tool_uses: HashMap::default(),
 776            expanded_thinking_segments: HashMap::default(),
 777            expanded_code_blocks: HashMap::default(),
 778            list_state: list_state.clone(),
 779            scrollbar_state: ScrollbarState::new(list_state),
 780            show_scrollbar: false,
 781            hide_scrollbar_task: None,
 782            editing_message: None,
 783            last_error: None,
 784            copied_code_block_ids: HashSet::default(),
 785            notifications: Vec::new(),
 786            _subscriptions: subscriptions,
 787            notification_subscriptions: HashMap::default(),
 788            open_feedback_editors: HashMap::default(),
 789            _load_edited_message_context_task: None,
 790        };
 791
 792        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 793            this.push_message(&message.id, &message.segments, window, cx);
 794
 795            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 796                this.render_tool_use_markdown(
 797                    tool_use.id.clone(),
 798                    tool_use.ui_text.clone(),
 799                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 800                    tool_use.status.text(),
 801                    cx,
 802                );
 803            }
 804        }
 805
 806        this
 807    }
 808
 809    pub fn thread(&self) -> &Entity<Thread> {
 810        &self.thread
 811    }
 812
 813    pub fn is_empty(&self) -> bool {
 814        self.messages.is_empty()
 815    }
 816
 817    pub fn summary(&self, cx: &App) -> Option<SharedString> {
 818        self.thread.read(cx).summary()
 819    }
 820
 821    pub fn summary_or_default(&self, cx: &App) -> SharedString {
 822        self.thread.read(cx).summary_or_default()
 823    }
 824
 825    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 826        self.last_error.take();
 827        self.thread.update(cx, |thread, cx| {
 828            thread.cancel_last_completion(Some(window.window_handle()), cx)
 829        })
 830    }
 831
 832    pub fn last_error(&self) -> Option<ThreadError> {
 833        self.last_error.clone()
 834    }
 835
 836    pub fn clear_last_error(&mut self) {
 837        self.last_error.take();
 838    }
 839
 840    /// Returns the editing message id and the estimated token count in the content
 841    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
 842        self.editing_message
 843            .as_ref()
 844            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 845    }
 846
 847    fn push_message(
 848        &mut self,
 849        id: &MessageId,
 850        segments: &[MessageSegment],
 851        _window: &mut Window,
 852        cx: &mut Context<Self>,
 853    ) {
 854        let old_len = self.messages.len();
 855        self.messages.push(*id);
 856        self.list_state.splice(old_len..old_len, 1);
 857
 858        let rendered_message =
 859            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 860        self.rendered_messages_by_id.insert(*id, rendered_message);
 861    }
 862
 863    fn edited_message(
 864        &mut self,
 865        id: &MessageId,
 866        segments: &[MessageSegment],
 867        _window: &mut Window,
 868        cx: &mut Context<Self>,
 869    ) {
 870        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 871            return;
 872        };
 873        self.list_state.splice(index..index + 1, 1);
 874        let rendered_message =
 875            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 876        self.rendered_messages_by_id.insert(*id, rendered_message);
 877    }
 878
 879    fn deleted_message(&mut self, id: &MessageId) {
 880        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 881            return;
 882        };
 883        self.messages.remove(index);
 884        self.list_state.splice(index..index + 1, 0);
 885        self.rendered_messages_by_id.remove(id);
 886    }
 887
 888    fn render_tool_use_markdown(
 889        &mut self,
 890        tool_use_id: LanguageModelToolUseId,
 891        tool_label: impl Into<SharedString>,
 892        tool_input: &str,
 893        tool_output: SharedString,
 894        cx: &mut Context<Self>,
 895    ) {
 896        let rendered = self
 897            .rendered_tool_uses
 898            .entry(tool_use_id.clone())
 899            .or_insert_with(|| RenderedToolUse {
 900                label: cx.new(|cx| {
 901                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 902                }),
 903                input: cx.new(|cx| {
 904                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 905                }),
 906                output: cx.new(|cx| {
 907                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 908                }),
 909            });
 910
 911        rendered.label.update(cx, |this, cx| {
 912            this.replace(tool_label, cx);
 913        });
 914        rendered.input.update(cx, |this, cx| {
 915            this.replace(
 916                MarkdownCodeBlock {
 917                    tag: "json",
 918                    text: tool_input,
 919                }
 920                .to_string(),
 921                cx,
 922            );
 923        });
 924        rendered.output.update(cx, |this, cx| {
 925            this.replace(tool_output, cx);
 926        });
 927    }
 928
 929    fn handle_thread_event(
 930        &mut self,
 931        _thread: &Entity<Thread>,
 932        event: &ThreadEvent,
 933        window: &mut Window,
 934        cx: &mut Context<Self>,
 935    ) {
 936        match event {
 937            ThreadEvent::CancelEditing => {
 938                if self.editing_message.is_some() {
 939                    self.cancel_editing_message(&menu::Cancel, window, cx);
 940                }
 941            }
 942            ThreadEvent::ShowError(error) => {
 943                self.last_error = Some(error.clone());
 944            }
 945            ThreadEvent::NewRequest | ThreadEvent::CompletionCanceled => {
 946                cx.notify();
 947            }
 948            ThreadEvent::StreamedCompletion
 949            | ThreadEvent::SummaryGenerated
 950            | ThreadEvent::SummaryChanged => {
 951                self.save_thread(cx);
 952            }
 953            ThreadEvent::Stopped(reason) => match reason {
 954                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 955                    let thread = self.thread.read(cx);
 956                    self.show_notification(
 957                        if thread.used_tools_since_last_user_message() {
 958                            "Finished running tools"
 959                        } else {
 960                            "New message"
 961                        },
 962                        IconName::ZedAssistant,
 963                        window,
 964                        cx,
 965                    );
 966                }
 967                _ => {}
 968            },
 969            ThreadEvent::ToolConfirmationNeeded => {
 970                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 971            }
 972            ThreadEvent::StreamedAssistantText(message_id, text) => {
 973                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 974                    rendered_message.append_text(text, cx);
 975                }
 976            }
 977            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
 978                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 979                    rendered_message.append_thinking(text, cx);
 980                }
 981            }
 982            ThreadEvent::MessageAdded(message_id) => {
 983                if let Some(message_segments) = self
 984                    .thread
 985                    .read(cx)
 986                    .message(*message_id)
 987                    .map(|message| message.segments.clone())
 988                {
 989                    self.push_message(message_id, &message_segments, window, cx);
 990                }
 991
 992                self.save_thread(cx);
 993                cx.notify();
 994            }
 995            ThreadEvent::MessageEdited(message_id) => {
 996                if let Some(message_segments) = self
 997                    .thread
 998                    .read(cx)
 999                    .message(*message_id)
1000                    .map(|message| message.segments.clone())
1001                {
1002                    self.edited_message(message_id, &message_segments, window, cx);
1003                }
1004
1005                self.save_thread(cx);
1006                cx.notify();
1007            }
1008            ThreadEvent::MessageDeleted(message_id) => {
1009                self.deleted_message(message_id);
1010                self.save_thread(cx);
1011                cx.notify();
1012            }
1013            ThreadEvent::UsePendingTools { tool_uses } => {
1014                for tool_use in tool_uses {
1015                    self.render_tool_use_markdown(
1016                        tool_use.id.clone(),
1017                        tool_use.ui_text.clone(),
1018                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1019                        "".into(),
1020                        cx,
1021                    );
1022                }
1023            }
1024            ThreadEvent::StreamedToolUse {
1025                tool_use_id,
1026                ui_text,
1027                input,
1028            } => {
1029                self.render_tool_use_markdown(
1030                    tool_use_id.clone(),
1031                    ui_text.clone(),
1032                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1033                    "".into(),
1034                    cx,
1035                );
1036            }
1037            ThreadEvent::ToolFinished {
1038                pending_tool_use, ..
1039            } => {
1040                if let Some(tool_use) = pending_tool_use {
1041                    self.render_tool_use_markdown(
1042                        tool_use.id.clone(),
1043                        tool_use.ui_text.clone(),
1044                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1045                        self.thread
1046                            .read(cx)
1047                            .output_for_tool(&tool_use.id)
1048                            .map(|output| output.clone().into())
1049                            .unwrap_or("".into()),
1050                        cx,
1051                    );
1052                }
1053            }
1054            ThreadEvent::CheckpointChanged => cx.notify(),
1055            ThreadEvent::ReceivedTextChunk => {}
1056            ThreadEvent::InvalidToolInput {
1057                tool_use_id,
1058                ui_text,
1059                invalid_input_json,
1060            } => {
1061                self.render_tool_use_markdown(
1062                    tool_use_id.clone(),
1063                    ui_text,
1064                    invalid_input_json,
1065                    self.thread
1066                        .read(cx)
1067                        .output_for_tool(tool_use_id)
1068                        .map(|output| output.clone().into())
1069                        .unwrap_or("".into()),
1070                    cx,
1071                );
1072            }
1073        }
1074    }
1075
1076    fn handle_rules_loading_error(
1077        &mut self,
1078        _thread_store: Entity<ThreadStore>,
1079        error: &RulesLoadingError,
1080        cx: &mut Context<Self>,
1081    ) {
1082        self.last_error = Some(ThreadError::Message {
1083            header: "Error loading rules file".into(),
1084            message: error.message.clone(),
1085        });
1086        cx.notify();
1087    }
1088
1089    fn show_notification(
1090        &mut self,
1091        caption: impl Into<SharedString>,
1092        icon: IconName,
1093        window: &mut Window,
1094        cx: &mut Context<ActiveThread>,
1095    ) {
1096        if window.is_window_active() || !self.notifications.is_empty() {
1097            return;
1098        }
1099
1100        let title = self
1101            .thread
1102            .read(cx)
1103            .summary()
1104            .unwrap_or("Agent Panel".into());
1105
1106        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1107            NotifyWhenAgentWaiting::PrimaryScreen => {
1108                if let Some(primary) = cx.primary_display() {
1109                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1110                }
1111            }
1112            NotifyWhenAgentWaiting::AllScreens => {
1113                let caption = caption.into();
1114                for screen in cx.displays() {
1115                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1116                }
1117            }
1118            NotifyWhenAgentWaiting::Never => {
1119                // Don't show anything
1120            }
1121        }
1122    }
1123
1124    fn pop_up(
1125        &mut self,
1126        icon: IconName,
1127        caption: SharedString,
1128        title: SharedString,
1129        window: &mut Window,
1130        screen: Rc<dyn PlatformDisplay>,
1131        cx: &mut Context<'_, ActiveThread>,
1132    ) {
1133        let options = AgentNotification::window_options(screen, cx);
1134
1135        let project_name = self.workspace.upgrade().and_then(|workspace| {
1136            workspace
1137                .read(cx)
1138                .project()
1139                .read(cx)
1140                .visible_worktrees(cx)
1141                .next()
1142                .map(|worktree| worktree.read(cx).root_name().to_string())
1143        });
1144
1145        if let Some(screen_window) = cx
1146            .open_window(options, |_, cx| {
1147                cx.new(|_| {
1148                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1149                })
1150            })
1151            .log_err()
1152        {
1153            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1154                self.notification_subscriptions
1155                    .entry(screen_window)
1156                    .or_insert_with(Vec::new)
1157                    .push(cx.subscribe_in(&pop_up, window, {
1158                        |this, _, event, window, cx| match event {
1159                            AgentNotificationEvent::Accepted => {
1160                                let handle = window.window_handle();
1161                                cx.activate(true);
1162
1163                                let workspace_handle = this.workspace.clone();
1164
1165                                // If there are multiple Zed windows, activate the correct one.
1166                                cx.defer(move |cx| {
1167                                    handle
1168                                        .update(cx, |_view, window, _cx| {
1169                                            window.activate_window();
1170
1171                                            if let Some(workspace) = workspace_handle.upgrade() {
1172                                                workspace.update(_cx, |workspace, cx| {
1173                                                    workspace
1174                                                        .focus_panel::<AssistantPanel>(window, cx);
1175                                                });
1176                                            }
1177                                        })
1178                                        .log_err();
1179                                });
1180
1181                                this.dismiss_notifications(cx);
1182                            }
1183                            AgentNotificationEvent::Dismissed => {
1184                                this.dismiss_notifications(cx);
1185                            }
1186                        }
1187                    }));
1188
1189                self.notifications.push(screen_window);
1190
1191                // If the user manually refocuses the original window, dismiss the popup.
1192                self.notification_subscriptions
1193                    .entry(screen_window)
1194                    .or_insert_with(Vec::new)
1195                    .push({
1196                        let pop_up_weak = pop_up.downgrade();
1197
1198                        cx.observe_window_activation(window, move |_, window, cx| {
1199                            if window.is_window_active() {
1200                                if let Some(pop_up) = pop_up_weak.upgrade() {
1201                                    pop_up.update(cx, |_, cx| {
1202                                        cx.emit(AgentNotificationEvent::Dismissed);
1203                                    });
1204                                }
1205                            }
1206                        })
1207                    });
1208            }
1209        }
1210    }
1211
1212    /// Spawns a task to save the active thread.
1213    ///
1214    /// Only one task to save the thread will be in flight at a time.
1215    fn save_thread(&mut self, cx: &mut Context<Self>) {
1216        let thread = self.thread.clone();
1217        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1218            let task = this
1219                .update(cx, |this, cx| {
1220                    this.thread_store
1221                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1222                })
1223                .ok();
1224
1225            if let Some(task) = task {
1226                task.await.log_err();
1227            }
1228        }));
1229    }
1230
1231    fn start_editing_message(
1232        &mut self,
1233        message_id: MessageId,
1234        message_segments: &[MessageSegment],
1235        window: &mut Window,
1236        cx: &mut Context<Self>,
1237    ) {
1238        // User message should always consist of a single text segment,
1239        // therefore we can skip returning early if it's not a text segment.
1240        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1241            return;
1242        };
1243
1244        // Cancel any ongoing streaming when user starts editing a previous message
1245        self.cancel_last_completion(window, cx);
1246
1247        let editor = crate::message_editor::create_editor(
1248            self.workspace.clone(),
1249            self.context_store.downgrade(),
1250            self.thread_store.downgrade(),
1251            window,
1252            cx,
1253        );
1254        editor.update(cx, |editor, cx| {
1255            editor.set_text(message_text.clone(), window, cx);
1256            editor.focus_handle(cx).focus(window);
1257            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1258        });
1259        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1260            EditorEvent::BufferEdited => {
1261                this.update_editing_message_token_count(true, cx);
1262            }
1263            _ => {}
1264        });
1265
1266        let context_picker_menu_handle = PopoverMenuHandle::default();
1267        let context_strip = cx.new(|cx| {
1268            ContextStrip::new(
1269                self.context_store.clone(),
1270                self.workspace.clone(),
1271                Some(self.thread_store.downgrade()),
1272                context_picker_menu_handle.clone(),
1273                SuggestContextKind::File,
1274                window,
1275                cx,
1276            )
1277        });
1278
1279        let context_strip_subscription =
1280            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1281
1282        self.editing_message = Some((
1283            message_id,
1284            EditingMessageState {
1285                editor: editor.clone(),
1286                context_strip,
1287                context_picker_menu_handle,
1288                last_estimated_token_count: None,
1289                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1290                _update_token_count_task: None,
1291            },
1292        ));
1293        self.update_editing_message_token_count(false, cx);
1294        cx.notify();
1295    }
1296
1297    fn handle_context_strip_event(
1298        &mut self,
1299        _context_strip: &Entity<ContextStrip>,
1300        event: &ContextStripEvent,
1301        window: &mut Window,
1302        cx: &mut Context<Self>,
1303    ) {
1304        if let Some((_, state)) = self.editing_message.as_ref() {
1305            match event {
1306                ContextStripEvent::PickerDismissed
1307                | ContextStripEvent::BlurredEmpty
1308                | ContextStripEvent::BlurredDown => {
1309                    let editor_focus_handle = state.editor.focus_handle(cx);
1310                    window.focus(&editor_focus_handle);
1311                }
1312                ContextStripEvent::BlurredUp => {}
1313            }
1314        }
1315    }
1316
1317    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1318        let Some((message_id, state)) = self.editing_message.as_mut() else {
1319            return;
1320        };
1321
1322        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1323        state._update_token_count_task.take();
1324
1325        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1326            state.last_estimated_token_count.take();
1327            return;
1328        };
1329
1330        let editor = state.editor.clone();
1331        let thread = self.thread.clone();
1332        let message_id = *message_id;
1333
1334        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1335            if debounce {
1336                cx.background_executor()
1337                    .timer(Duration::from_millis(200))
1338                    .await;
1339            }
1340
1341            let token_count = if let Some(task) = cx
1342                .update(|cx| {
1343                    let Some(message) = thread.read(cx).message(message_id) else {
1344                        log::error!("Message that was being edited no longer exists");
1345                        return None;
1346                    };
1347                    let message_text = editor.read(cx).text(cx);
1348
1349                    if message_text.is_empty() && message.loaded_context.is_empty() {
1350                        return None;
1351                    }
1352
1353                    let mut request_message = LanguageModelRequestMessage {
1354                        role: language_model::Role::User,
1355                        content: Vec::new(),
1356                        cache: false,
1357                    };
1358
1359                    message
1360                        .loaded_context
1361                        .add_to_request_message(&mut request_message);
1362
1363                    if !message_text.is_empty() {
1364                        request_message
1365                            .content
1366                            .push(MessageContent::Text(message_text));
1367                    }
1368
1369                    let request = language_model::LanguageModelRequest {
1370                        thread_id: None,
1371                        prompt_id: None,
1372                        mode: None,
1373                        messages: vec![request_message],
1374                        tools: vec![],
1375                        stop: vec![],
1376                        temperature: None,
1377                    };
1378
1379                    Some(configured_model.model.count_tokens(request, cx))
1380                })
1381                .ok()
1382                .flatten()
1383            {
1384                task.await.log_err()
1385            } else {
1386                Some(0)
1387            };
1388
1389            if let Some(token_count) = token_count {
1390                this.update(cx, |this, cx| {
1391                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1392                        return;
1393                    };
1394
1395                    state.last_estimated_token_count = Some(token_count);
1396                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1397                })
1398                .ok();
1399            };
1400        }));
1401    }
1402
1403    fn toggle_context_picker(
1404        &mut self,
1405        _: &crate::ToggleContextPicker,
1406        window: &mut Window,
1407        cx: &mut Context<Self>,
1408    ) {
1409        if let Some((_, state)) = self.editing_message.as_mut() {
1410            let handle = state.context_picker_menu_handle.clone();
1411            window.defer(cx, move |window, cx| {
1412                handle.toggle(window, cx);
1413            });
1414        }
1415    }
1416
1417    fn remove_all_context(
1418        &mut self,
1419        _: &crate::RemoveAllContext,
1420        _window: &mut Window,
1421        cx: &mut Context<Self>,
1422    ) {
1423        self.context_store.update(cx, |store, _cx| store.clear());
1424        cx.notify();
1425    }
1426
1427    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1428        if let Some((_, state)) = self.editing_message.as_mut() {
1429            if state.context_picker_menu_handle.is_deployed() {
1430                cx.propagate();
1431            } else {
1432                state.context_strip.focus_handle(cx).focus(window);
1433            }
1434        }
1435    }
1436
1437    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1438        let images = cx
1439            .read_from_clipboard()
1440            .map(|item| {
1441                item.into_entries()
1442                    .filter_map(|entry| {
1443                        if let ClipboardEntry::Image(image) = entry {
1444                            Some(image)
1445                        } else {
1446                            None
1447                        }
1448                    })
1449                    .collect::<Vec<_>>()
1450            })
1451            .unwrap_or_default();
1452
1453        if images.is_empty() {
1454            return;
1455        }
1456        cx.stop_propagation();
1457
1458        self.context_store.update(cx, |store, cx| {
1459            for image in images {
1460                store.add_image_instance(Arc::new(image), cx);
1461            }
1462        });
1463    }
1464
1465    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1466        self.editing_message.take();
1467        cx.notify();
1468    }
1469
1470    fn confirm_editing_message(
1471        &mut self,
1472        _: &menu::Confirm,
1473        window: &mut Window,
1474        cx: &mut Context<Self>,
1475    ) {
1476        let Some((message_id, state)) = self.editing_message.take() else {
1477            return;
1478        };
1479
1480        let Some(model) = self
1481            .thread
1482            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1483        else {
1484            return;
1485        };
1486
1487        if model.provider.must_accept_terms(cx) {
1488            cx.notify();
1489            return;
1490        }
1491
1492        let edited_text = state.editor.read(cx).text(cx);
1493
1494        let new_context = self
1495            .context_store
1496            .read(cx)
1497            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1498
1499        let project = self.thread.read(cx).project().clone();
1500        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1501
1502        let load_context_task =
1503            crate::context::load_context(new_context, &project, &prompt_store, cx);
1504        self._load_edited_message_context_task =
1505            Some(cx.spawn_in(window, async move |this, cx| {
1506                let context = load_context_task.await;
1507                let _ = this
1508                    .update_in(cx, |this, window, cx| {
1509                        this.thread.update(cx, |thread, cx| {
1510                            thread.edit_message(
1511                                message_id,
1512                                Role::User,
1513                                vec![MessageSegment::Text(edited_text)],
1514                                Some(context.loaded_context),
1515                                cx,
1516                            );
1517                            for message_id in this.messages_after(message_id) {
1518                                thread.delete_message(*message_id, cx);
1519                            }
1520                        });
1521
1522                        this.thread.update(cx, |thread, cx| {
1523                            thread.advance_prompt_id();
1524                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1525                        });
1526                        this._load_edited_message_context_task = None;
1527                        cx.notify();
1528                    })
1529                    .log_err();
1530            }));
1531    }
1532
1533    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1534        self.messages
1535            .iter()
1536            .position(|id| *id == message_id)
1537            .map(|index| &self.messages[index + 1..])
1538            .unwrap_or(&[])
1539    }
1540
1541    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1542        self.cancel_editing_message(&menu::Cancel, window, cx);
1543    }
1544
1545    fn handle_regenerate_click(
1546        &mut self,
1547        _: &ClickEvent,
1548        window: &mut Window,
1549        cx: &mut Context<Self>,
1550    ) {
1551        self.confirm_editing_message(&menu::Confirm, window, cx);
1552    }
1553
1554    fn handle_feedback_click(
1555        &mut self,
1556        message_id: MessageId,
1557        feedback: ThreadFeedback,
1558        window: &mut Window,
1559        cx: &mut Context<Self>,
1560    ) {
1561        let report = self.thread.update(cx, |thread, cx| {
1562            thread.report_message_feedback(message_id, feedback, cx)
1563        });
1564
1565        cx.spawn(async move |this, cx| {
1566            report.await?;
1567            this.update(cx, |_this, cx| cx.notify())
1568        })
1569        .detach_and_log_err(cx);
1570
1571        match feedback {
1572            ThreadFeedback::Positive => {
1573                self.open_feedback_editors.remove(&message_id);
1574            }
1575            ThreadFeedback::Negative => {
1576                self.handle_show_feedback_comments(message_id, window, cx);
1577            }
1578        }
1579    }
1580
1581    fn handle_show_feedback_comments(
1582        &mut self,
1583        message_id: MessageId,
1584        window: &mut Window,
1585        cx: &mut Context<Self>,
1586    ) {
1587        let buffer = cx.new(|cx| {
1588            let empty_string = String::new();
1589            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1590        });
1591
1592        let editor = cx.new(|cx| {
1593            let mut editor = Editor::new(
1594                editor::EditorMode::AutoHeight { max_lines: 4 },
1595                buffer,
1596                None,
1597                window,
1598                cx,
1599            );
1600            editor.set_placeholder_text(
1601                "What went wrong? Share your feedback so we can improve.",
1602                cx,
1603            );
1604            editor
1605        });
1606
1607        editor.read(cx).focus_handle(cx).focus(window);
1608        self.open_feedback_editors.insert(message_id, editor);
1609        cx.notify();
1610    }
1611
1612    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1613        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1614            return;
1615        };
1616
1617        let report_task = self.thread.update(cx, |thread, cx| {
1618            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1619        });
1620
1621        let comments = editor.read(cx).text(cx);
1622        if !comments.is_empty() {
1623            let thread_id = self.thread.read(cx).id().clone();
1624            let comments_value = String::from(comments.as_str());
1625
1626            let message_content = self
1627                .thread
1628                .read(cx)
1629                .message(message_id)
1630                .map(|msg| msg.to_string())
1631                .unwrap_or_default();
1632
1633            telemetry::event!(
1634                "Assistant Thread Feedback Comments",
1635                thread_id,
1636                message_id = message_id.0,
1637                message_content,
1638                comments = comments_value
1639            );
1640
1641            self.open_feedback_editors.remove(&message_id);
1642
1643            cx.spawn(async move |this, cx| {
1644                report_task.await?;
1645                this.update(cx, |_this, cx| cx.notify())
1646            })
1647            .detach_and_log_err(cx);
1648        }
1649    }
1650
1651    fn render_edit_message_editor(
1652        &self,
1653        state: &EditingMessageState,
1654        window: &mut Window,
1655        cx: &Context<Self>,
1656    ) -> impl IntoElement {
1657        let settings = ThemeSettings::get_global(cx);
1658        let font_size = TextSize::Small.rems(cx);
1659        let line_height = font_size.to_pixels(window.rem_size()) * 1.75;
1660
1661        let colors = cx.theme().colors();
1662
1663        let text_style = TextStyle {
1664            color: colors.text,
1665            font_family: settings.buffer_font.family.clone(),
1666            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1667            font_features: settings.buffer_font.features.clone(),
1668            font_size: font_size.into(),
1669            line_height: line_height.into(),
1670            ..Default::default()
1671        };
1672
1673        v_flex()
1674            .key_context("EditMessageEditor")
1675            .on_action(cx.listener(Self::toggle_context_picker))
1676            .on_action(cx.listener(Self::remove_all_context))
1677            .on_action(cx.listener(Self::move_up))
1678            .on_action(cx.listener(Self::cancel_editing_message))
1679            .on_action(cx.listener(Self::confirm_editing_message))
1680            .capture_action(cx.listener(Self::paste))
1681            .min_h_6()
1682            .flex_grow()
1683            .w_full()
1684            .gap_2()
1685            .child(EditorElement::new(
1686                &state.editor,
1687                EditorStyle {
1688                    background: colors.editor_background,
1689                    local_player: cx.theme().players().local(),
1690                    text: text_style,
1691                    syntax: cx.theme().syntax().clone(),
1692                    ..Default::default()
1693                },
1694            ))
1695            .child(state.context_strip.clone())
1696    }
1697
1698    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1699        let message_id = self.messages[ix];
1700        let Some(message) = self.thread.read(cx).message(message_id) else {
1701            return Empty.into_any();
1702        };
1703
1704        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1705            return Empty.into_any();
1706        };
1707
1708        let workspace = self.workspace.clone();
1709        let thread = self.thread.read(cx);
1710
1711        // Get all the data we need from thread before we start using it in closures
1712        let checkpoint = thread.checkpoint_for_message(message_id);
1713        let added_context = thread
1714            .context_for_message(message_id)
1715            .map(|context| AddedContext::new_attached(context, cx))
1716            .collect::<Vec<_>>();
1717
1718        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1719        let has_tool_uses = !tool_uses.is_empty();
1720        let is_generating = thread.is_generating();
1721        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1722
1723        let is_first_message = ix == 0;
1724        let is_last_message = ix == self.messages.len() - 1;
1725
1726        let loading_dots = (is_generating_stale && is_last_message)
1727            .then(|| AnimatedLabel::new("").size(LabelSize::Small));
1728
1729        let editing_message_state = self
1730            .editing_message
1731            .as_ref()
1732            .filter(|(id, _)| *id == message_id)
1733            .map(|(_, state)| state);
1734
1735        let colors = cx.theme().colors();
1736        let editor_bg_color = colors.editor_background;
1737
1738        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileCode)
1739            .shape(ui::IconButtonShape::Square)
1740            .icon_size(IconSize::XSmall)
1741            .icon_color(Color::Ignored)
1742            .tooltip(Tooltip::text("Open Thread as Markdown"))
1743            .on_click(|_, window, cx| {
1744                window.dispatch_action(Box::new(OpenActiveThreadAsMarkdown), cx)
1745            });
1746
1747        // For all items that should be aligned with the LLM's response.
1748        const RESPONSE_PADDING_X: Pixels = px(19.);
1749
1750        let show_feedback = thread.is_turn_end(ix);
1751
1752        let feedback_container = h_flex()
1753            .group("feedback_container")
1754            .mt_1()
1755            .py_2()
1756            .px(RESPONSE_PADDING_X)
1757            .gap_1()
1758            .flex_wrap()
1759            .justify_end();
1760        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1761            Some(feedback) => feedback_container
1762                .child(
1763                    div().mr_1().visible_on_hover("feedback_container").child(
1764                        Label::new(match feedback {
1765                            ThreadFeedback::Positive => "Thanks for your feedback!",
1766                            ThreadFeedback::Negative => {
1767                                "We appreciate your feedback and will use it to improve."
1768                            }
1769                        })
1770                    .color(Color::Muted)
1771                    .size(LabelSize::XSmall)
1772                    .truncate())
1773                )
1774                .child(
1775                    h_flex()
1776                        .pr_1()
1777                        .gap_1()
1778                        .child(
1779                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1780                                .shape(ui::IconButtonShape::Square)
1781                                .icon_size(IconSize::XSmall)
1782                                .icon_color(match feedback {
1783                                    ThreadFeedback::Positive => Color::Accent,
1784                                    ThreadFeedback::Negative => Color::Ignored,
1785                                })
1786                                .tooltip(Tooltip::text("Helpful Response"))
1787                                .on_click(cx.listener(move |this, _, window, cx| {
1788                                    this.handle_feedback_click(
1789                                        message_id,
1790                                        ThreadFeedback::Positive,
1791                                        window,
1792                                        cx,
1793                                    );
1794                                })),
1795                        )
1796                        .child(
1797                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1798                                .shape(ui::IconButtonShape::Square)
1799                                .icon_size(IconSize::XSmall)
1800                                .icon_color(match feedback {
1801                                    ThreadFeedback::Positive => Color::Ignored,
1802                                    ThreadFeedback::Negative => Color::Accent,
1803                                })
1804                                .tooltip(Tooltip::text("Not Helpful"))
1805                                .on_click(cx.listener(move |this, _, window, cx| {
1806                                    this.handle_feedback_click(
1807                                        message_id,
1808                                        ThreadFeedback::Negative,
1809                                        window,
1810                                        cx,
1811                                    );
1812                                })),
1813                        )
1814                        .child(open_as_markdown),
1815                )
1816                .into_any_element(),
1817            None => feedback_container
1818                .child(
1819                    div().mr_1().visible_on_hover("feedback_container").child(
1820                        Label::new(
1821                            "Rating the thread sends all of your current conversation to the Zed team.",
1822                        )
1823                        .color(Color::Muted)
1824                    .size(LabelSize::XSmall)
1825                    .truncate())
1826                )
1827                .child(
1828                    h_flex()
1829                        .pr_1()
1830                        .gap_1()
1831                        .child(
1832                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1833                                .icon_size(IconSize::XSmall)
1834                                .icon_color(Color::Ignored)
1835                                .shape(ui::IconButtonShape::Square)
1836                                .tooltip(Tooltip::text("Helpful Response"))
1837                                .on_click(cx.listener(move |this, _, window, cx| {
1838                                    this.handle_feedback_click(
1839                                        message_id,
1840                                        ThreadFeedback::Positive,
1841                                        window,
1842                                        cx,
1843                                    );
1844                                })),
1845                        )
1846                        .child(
1847                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1848                                .icon_size(IconSize::XSmall)
1849                                .icon_color(Color::Ignored)
1850                                .shape(ui::IconButtonShape::Square)
1851                                .tooltip(Tooltip::text("Not Helpful"))
1852                                .on_click(cx.listener(move |this, _, window, cx| {
1853                                    this.handle_feedback_click(
1854                                        message_id,
1855                                        ThreadFeedback::Negative,
1856                                        window,
1857                                        cx,
1858                                    );
1859                                })),
1860                        )
1861                        .child(open_as_markdown),
1862                )
1863                .into_any_element(),
1864        };
1865
1866        let message_is_empty = message.should_display_content();
1867        let has_content = !message_is_empty || !added_context.is_empty();
1868
1869        let message_content = has_content.then(|| {
1870            if let Some(state) = editing_message_state.as_ref() {
1871                self.render_edit_message_editor(state, window, cx)
1872                    .into_any_element()
1873            } else {
1874                v_flex()
1875                    .w_full()
1876                    .gap_1()
1877                    .when(!message_is_empty, |parent| {
1878                        parent.child(div().min_h_6().child(self.render_message_content(
1879                            message_id,
1880                            rendered_message,
1881                            has_tool_uses,
1882                            workspace.clone(),
1883                            window,
1884                            cx,
1885                        )))
1886                    })
1887                    .when(!added_context.is_empty(), |parent| {
1888                        parent.child(h_flex().flex_wrap().gap_1().children(
1889                            added_context.into_iter().map(|added_context| {
1890                                let context = added_context.handle.clone();
1891                                ContextPill::added(added_context, false, false, None).on_click(
1892                                    Rc::new(cx.listener({
1893                                        let workspace = workspace.clone();
1894                                        move |_, _, window, cx| {
1895                                            if let Some(workspace) = workspace.upgrade() {
1896                                                open_context(&context, workspace, window, cx);
1897                                                cx.notify();
1898                                            }
1899                                        }
1900                                    })),
1901                                )
1902                            }),
1903                        ))
1904                    })
1905                    .into_any_element()
1906            }
1907        });
1908
1909        let styled_message = match message.role {
1910            Role::User => v_flex()
1911                .id(("message-container", ix))
1912                .pt_2()
1913                .pl_2()
1914                .pr_2p5()
1915                .pb_4()
1916                .child(
1917                    v_flex()
1918                        .id(("user-message", ix))
1919                        .bg(editor_bg_color)
1920                        .rounded_lg()
1921                        .shadow_md()
1922                        .border_1()
1923                        .border_color(colors.border)
1924                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1925                        .cursor_pointer()
1926                        .child(
1927                            h_flex()
1928                                .p_2p5()
1929                                .gap_1()
1930                                .children(message_content)
1931                                .when_some(editing_message_state, |this, state| {
1932                                    let focus_handle = state.editor.focus_handle(cx).clone();
1933                                    this.w_full().justify_between().child(
1934                                        h_flex()
1935                                            .gap_0p5()
1936                                            .child(
1937                                                IconButton::new(
1938                                                    "cancel-edit-message",
1939                                                    IconName::Close,
1940                                                )
1941                                                .shape(ui::IconButtonShape::Square)
1942                                                .icon_color(Color::Error)
1943                                                .tooltip({
1944                                                    let focus_handle = focus_handle.clone();
1945                                                    move |window, cx| {
1946                                                        Tooltip::for_action_in(
1947                                                            "Cancel Edit",
1948                                                            &menu::Cancel,
1949                                                            &focus_handle,
1950                                                            window,
1951                                                            cx,
1952                                                        )
1953                                                    }
1954                                                })
1955                                                .on_click(cx.listener(Self::handle_cancel_click)),
1956                                            )
1957                                            .child(
1958                                                IconButton::new(
1959                                                    "confirm-edit-message",
1960                                                    IconName::Check,
1961                                                )
1962                                                .disabled(state.editor.read(cx).is_empty(cx))
1963                                                .shape(ui::IconButtonShape::Square)
1964                                                .icon_color(Color::Success)
1965                                                .tooltip({
1966                                                    let focus_handle = focus_handle.clone();
1967                                                    move |window, cx| {
1968                                                        Tooltip::for_action_in(
1969                                                            "Regenerate",
1970                                                            &menu::Confirm,
1971                                                            &focus_handle,
1972                                                            window,
1973                                                            cx,
1974                                                        )
1975                                                    }
1976                                                })
1977                                                .on_click(
1978                                                    cx.listener(Self::handle_regenerate_click),
1979                                                ),
1980                                            ),
1981                                    )
1982                                }),
1983                        )
1984                        .when(editing_message_state.is_none(), |this| {
1985                            this.tooltip(Tooltip::text("Click To Edit"))
1986                        })
1987                        .on_click(cx.listener({
1988                            let message_segments = message.segments.clone();
1989                            move |this, _, window, cx| {
1990                                this.start_editing_message(
1991                                    message_id,
1992                                    &message_segments,
1993                                    window,
1994                                    cx,
1995                                );
1996                            }
1997                        })),
1998                ),
1999            Role::Assistant => v_flex()
2000                .id(("message-container", ix))
2001                .px(RESPONSE_PADDING_X)
2002                .gap_2()
2003                .children(message_content)
2004                .when(has_tool_uses, |parent| {
2005                    parent.children(tool_uses.into_iter().map(|tool_use| {
2006                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2007                    }))
2008                }),
2009            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2010                v_flex()
2011                    .bg(colors.editor_background)
2012                    .rounded_sm()
2013                    .child(div().p_4().children(message_content)),
2014            ),
2015        };
2016
2017        let after_editing_message = self
2018            .editing_message
2019            .as_ref()
2020            .map_or(false, |(editing_message_id, _)| {
2021                message_id > *editing_message_id
2022            });
2023
2024        let panel_background = cx.theme().colors().panel_background;
2025
2026        v_flex()
2027            .w_full()
2028            .map(|parent| {
2029                if let Some(checkpoint) = checkpoint.filter(|_| is_generating) {
2030                    let mut is_pending = false;
2031                    let mut error = None;
2032                    if let Some(last_restore_checkpoint) =
2033                        self.thread.read(cx).last_restore_checkpoint()
2034                    {
2035                        if last_restore_checkpoint.message_id() == message_id {
2036                            match last_restore_checkpoint {
2037                                LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2038                                LastRestoreCheckpoint::Error { error: err, .. } => {
2039                                    error = Some(err.clone());
2040                                }
2041                            }
2042                        }
2043                    }
2044
2045                    let restore_checkpoint_button =
2046                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2047                            .icon(if error.is_some() {
2048                                IconName::XCircle
2049                            } else {
2050                                IconName::Undo
2051                            })
2052                            .icon_size(IconSize::XSmall)
2053                            .icon_position(IconPosition::Start)
2054                            .icon_color(if error.is_some() {
2055                                Some(Color::Error)
2056                            } else {
2057                                None
2058                            })
2059                            .label_size(LabelSize::XSmall)
2060                            .disabled(is_pending)
2061                            .on_click(cx.listener(move |this, _, _window, cx| {
2062                                this.thread.update(cx, |thread, cx| {
2063                                    thread
2064                                        .restore_checkpoint(checkpoint.clone(), cx)
2065                                        .detach_and_log_err(cx);
2066                                });
2067                            }));
2068
2069                    let restore_checkpoint_button = if is_pending {
2070                        restore_checkpoint_button
2071                            .with_animation(
2072                                ("pulsating-restore-checkpoint-button", ix),
2073                                Animation::new(Duration::from_secs(2))
2074                                    .repeat()
2075                                    .with_easing(pulsating_between(0.6, 1.)),
2076                                |label, delta| label.alpha(delta),
2077                            )
2078                            .into_any_element()
2079                    } else if let Some(error) = error {
2080                        restore_checkpoint_button
2081                            .tooltip(Tooltip::text(error.to_string()))
2082                            .into_any_element()
2083                    } else {
2084                        restore_checkpoint_button.into_any_element()
2085                    };
2086
2087                    parent.child(
2088                        h_flex()
2089                            .pt_2p5()
2090                            .px_2p5()
2091                            .w_full()
2092                            .gap_1()
2093                            .child(ui::Divider::horizontal())
2094                            .child(restore_checkpoint_button)
2095                            .child(ui::Divider::horizontal()),
2096                    )
2097                } else {
2098                    parent
2099                }
2100            })
2101            .when(is_first_message, |parent| {
2102                parent.child(self.render_rules_item(cx))
2103            })
2104            .child(styled_message)
2105            .when(is_generating && is_last_message, |this| {
2106                this.child(
2107                    h_flex()
2108                        .h_8()
2109                        .mt_2()
2110                        .mb_4()
2111                        .ml_4()
2112                        .py_1p5()
2113                        .when_some(loading_dots, |this, loading_dots| this.child(loading_dots)),
2114                )
2115            })
2116            .when(show_feedback, move |parent| {
2117                parent.child(feedback_items).when_some(
2118                    self.open_feedback_editors.get(&message_id),
2119                    move |parent, feedback_editor| {
2120                        let focus_handle = feedback_editor.focus_handle(cx);
2121                        parent.child(
2122                            v_flex()
2123                                .key_context("AgentFeedbackMessageEditor")
2124                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2125                                    this.open_feedback_editors.remove(&message_id);
2126                                    cx.notify();
2127                                }))
2128                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2129                                    this.submit_feedback_message(message_id, cx);
2130                                    cx.notify();
2131                                }))
2132                                .on_action(cx.listener(Self::confirm_editing_message))
2133                                .mb_2()
2134                                .mx_4()
2135                                .p_2()
2136                                .rounded_md()
2137                                .border_1()
2138                                .border_color(cx.theme().colors().border)
2139                                .bg(cx.theme().colors().editor_background)
2140                                .child(feedback_editor.clone())
2141                                .child(
2142                                    h_flex()
2143                                        .gap_1()
2144                                        .justify_end()
2145                                        .child(
2146                                            Button::new("dismiss-feedback-message", "Cancel")
2147                                                .label_size(LabelSize::Small)
2148                                                .key_binding(
2149                                                    KeyBinding::for_action_in(
2150                                                        &menu::Cancel,
2151                                                        &focus_handle,
2152                                                        window,
2153                                                        cx,
2154                                                    )
2155                                                    .map(|kb| kb.size(rems_from_px(10.))),
2156                                                )
2157                                                .on_click(cx.listener(
2158                                                    move |this, _, _window, cx| {
2159                                                        this.open_feedback_editors
2160                                                            .remove(&message_id);
2161                                                        cx.notify();
2162                                                    },
2163                                                )),
2164                                        )
2165                                        .child(
2166                                            Button::new(
2167                                                "submit-feedback-message",
2168                                                "Share Feedback",
2169                                            )
2170                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2171                                            .label_size(LabelSize::Small)
2172                                            .key_binding(
2173                                                KeyBinding::for_action_in(
2174                                                    &menu::Confirm,
2175                                                    &focus_handle,
2176                                                    window,
2177                                                    cx,
2178                                                )
2179                                                .map(|kb| kb.size(rems_from_px(10.))),
2180                                            )
2181                                            .on_click(
2182                                                cx.listener(move |this, _, _window, cx| {
2183                                                    this.submit_feedback_message(message_id, cx);
2184                                                    cx.notify()
2185                                                }),
2186                                            ),
2187                                        ),
2188                                ),
2189                        )
2190                    },
2191                )
2192            })
2193            .when(after_editing_message, |parent| {
2194                // Backdrop to dim out the whole thread below the editing user message
2195                parent.relative().child(
2196                    div()
2197                        .occlude()
2198                        .absolute()
2199                        .inset_0()
2200                        .size_full()
2201                        .bg(panel_background)
2202                        .opacity(0.8),
2203                )
2204            })
2205            .into_any()
2206    }
2207
2208    fn render_message_content(
2209        &self,
2210        message_id: MessageId,
2211        rendered_message: &RenderedMessage,
2212        has_tool_uses: bool,
2213        workspace: WeakEntity<Workspace>,
2214        window: &Window,
2215        cx: &Context<Self>,
2216    ) -> impl IntoElement {
2217        let is_last_message = self.messages.last() == Some(&message_id);
2218        let is_generating = self.thread.read(cx).is_generating();
2219        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2220            rendered_message
2221                .segments
2222                .iter()
2223                .enumerate()
2224                .next_back()
2225                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2226                .map(|(index, _)| index)
2227        } else {
2228            None
2229        };
2230
2231        let message_role = self
2232            .thread
2233            .read(cx)
2234            .message(message_id)
2235            .map(|m| m.role)
2236            .unwrap_or(Role::User);
2237
2238        let is_assistant_message = message_role == Role::Assistant;
2239        let is_user_message = message_role == Role::User;
2240
2241        v_flex()
2242            .text_ui(cx)
2243            .gap_2()
2244            .when(is_user_message, |this| this.text_xs())
2245            .children(
2246                rendered_message.segments.iter().enumerate().map(
2247                    |(index, segment)| match segment {
2248                        RenderedMessageSegment::Thinking {
2249                            content,
2250                            scroll_handle,
2251                        } => self
2252                            .render_message_thinking_segment(
2253                                message_id,
2254                                index,
2255                                content.clone(),
2256                                &scroll_handle,
2257                                Some(index) == pending_thinking_segment_index,
2258                                window,
2259                                cx,
2260                            )
2261                            .into_any_element(),
2262                        RenderedMessageSegment::Text(markdown) => {
2263                            let markdown_element = MarkdownElement::new(
2264                                markdown.clone(),
2265                                if is_user_message {
2266                                    let mut style = default_markdown_style(window, cx);
2267                                    let mut text_style = window.text_style();
2268                                    let theme_settings = ThemeSettings::get_global(cx);
2269
2270                                    let buffer_font = theme_settings.buffer_font.family.clone();
2271                                    let buffer_font_size = TextSize::Small.rems(cx);
2272
2273                                    text_style.refine(&TextStyleRefinement {
2274                                        font_family: Some(buffer_font),
2275                                        font_size: Some(buffer_font_size.into()),
2276                                        ..Default::default()
2277                                    });
2278
2279                                    style.base_text_style = text_style;
2280                                    style
2281                                } else {
2282                                    default_markdown_style(window, cx)
2283                                },
2284                            );
2285
2286                            let markdown_element = if is_assistant_message {
2287                                markdown_element.code_block_renderer(
2288                                    markdown::CodeBlockRenderer::Custom {
2289                                        render: Arc::new({
2290                                            let workspace = workspace.clone();
2291                                            let active_thread = cx.entity();
2292                                            move |kind,
2293                                                  parsed_markdown,
2294                                                  range,
2295                                                  metadata,
2296                                                  window,
2297                                                  cx| {
2298                                                render_markdown_code_block(
2299                                                    message_id,
2300                                                    range.start,
2301                                                    kind,
2302                                                    parsed_markdown,
2303                                                    metadata,
2304                                                    active_thread.clone(),
2305                                                    workspace.clone(),
2306                                                    window,
2307                                                    cx,
2308                                                )
2309                                            }
2310                                        }),
2311                                        transform: Some(Arc::new({
2312                                            let active_thread = cx.entity();
2313                                            let editor_bg = cx.theme().colors().editor_background;
2314
2315                                            move |el, range, metadata, _, cx| {
2316                                                let is_expanded = active_thread
2317                                                    .read(cx)
2318                                                    .expanded_code_blocks
2319                                                    .get(&(message_id, range.start))
2320                                                    .copied()
2321                                                    .unwrap_or(true);
2322
2323                                                if is_expanded
2324                                                    || metadata.line_count
2325                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2326                                                {
2327                                                    return el;
2328                                                }
2329                                                el.child(
2330                                                    div()
2331                                                        .absolute()
2332                                                        .bottom_0()
2333                                                        .left_0()
2334                                                        .w_full()
2335                                                        .h_1_4()
2336                                                        .rounded_b_lg()
2337                                                        .bg(linear_gradient(
2338                                                            0.,
2339                                                            linear_color_stop(editor_bg, 0.),
2340                                                            linear_color_stop(
2341                                                                editor_bg.opacity(0.),
2342                                                                1.,
2343                                                            ),
2344                                                        )),
2345                                                )
2346                                            }
2347                                        })),
2348                                    },
2349                                )
2350                            } else {
2351                                markdown_element.code_block_renderer(
2352                                    markdown::CodeBlockRenderer::Default {
2353                                        copy_button: false,
2354                                        border: true,
2355                                    },
2356                                )
2357                            };
2358
2359                            div()
2360                                .child(markdown_element.on_url_click({
2361                                    let workspace = self.workspace.clone();
2362                                    move |text, window, cx| {
2363                                        open_markdown_link(text, workspace.clone(), window, cx);
2364                                    }
2365                                }))
2366                                .into_any_element()
2367                        }
2368                    },
2369                ),
2370            )
2371    }
2372
2373    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2374        cx.theme().colors().border.opacity(0.5)
2375    }
2376
2377    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2378        cx.theme()
2379            .colors()
2380            .element_background
2381            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2382    }
2383
2384    fn render_message_thinking_segment(
2385        &self,
2386        message_id: MessageId,
2387        ix: usize,
2388        markdown: Entity<Markdown>,
2389        scroll_handle: &ScrollHandle,
2390        pending: bool,
2391        window: &Window,
2392        cx: &Context<Self>,
2393    ) -> impl IntoElement {
2394        let is_open = self
2395            .expanded_thinking_segments
2396            .get(&(message_id, ix))
2397            .copied()
2398            .unwrap_or_default();
2399
2400        let editor_bg = cx.theme().colors().panel_background;
2401
2402        div().map(|this| {
2403            if pending {
2404                this.v_flex()
2405                    .mt_neg_2()
2406                    .mb_1p5()
2407                    .child(
2408                        h_flex()
2409                            .group("disclosure-header")
2410                            .justify_between()
2411                            .child(
2412                                h_flex()
2413                                    .gap_1p5()
2414                                    .child(
2415                                        Icon::new(IconName::LightBulb)
2416                                            .size(IconSize::XSmall)
2417                                            .color(Color::Muted),
2418                                    )
2419                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2420                            )
2421                            .child(
2422                                h_flex()
2423                                    .gap_1()
2424                                    .child(
2425                                        div().visible_on_hover("disclosure-header").child(
2426                                            Disclosure::new("thinking-disclosure", is_open)
2427                                                .opened_icon(IconName::ChevronUp)
2428                                                .closed_icon(IconName::ChevronDown)
2429                                                .on_click(cx.listener({
2430                                                    move |this, _event, _window, _cx| {
2431                                                        let is_open = this
2432                                                            .expanded_thinking_segments
2433                                                            .entry((message_id, ix))
2434                                                            .or_insert(false);
2435
2436                                                        *is_open = !*is_open;
2437                                                    }
2438                                                })),
2439                                        ),
2440                                    )
2441                                    .child({
2442                                        Icon::new(IconName::ArrowCircle)
2443                                            .color(Color::Accent)
2444                                            .size(IconSize::Small)
2445                                            .with_animation(
2446                                                "arrow-circle",
2447                                                Animation::new(Duration::from_secs(2)).repeat(),
2448                                                |icon, delta| {
2449                                                    icon.transform(Transformation::rotate(
2450                                                        percentage(delta),
2451                                                    ))
2452                                                },
2453                                            )
2454                                    }),
2455                            ),
2456                    )
2457                    .when(!is_open, |this| {
2458                        let gradient_overlay = div()
2459                            .rounded_b_lg()
2460                            .h_full()
2461                            .absolute()
2462                            .w_full()
2463                            .bottom_0()
2464                            .left_0()
2465                            .bg(linear_gradient(
2466                                180.,
2467                                linear_color_stop(editor_bg, 1.),
2468                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2469                            ));
2470
2471                        this.child(
2472                            div()
2473                                .relative()
2474                                .bg(editor_bg)
2475                                .rounded_b_lg()
2476                                .mt_2()
2477                                .pl_4()
2478                                .child(
2479                                    div()
2480                                        .id(("thinking-content", ix))
2481                                        .max_h_20()
2482                                        .track_scroll(scroll_handle)
2483                                        .text_ui_sm(cx)
2484                                        .overflow_hidden()
2485                                        .child(
2486                                            MarkdownElement::new(
2487                                                markdown.clone(),
2488                                                default_markdown_style(window, cx),
2489                                            )
2490                                            .on_url_click({
2491                                                let workspace = self.workspace.clone();
2492                                                move |text, window, cx| {
2493                                                    open_markdown_link(
2494                                                        text,
2495                                                        workspace.clone(),
2496                                                        window,
2497                                                        cx,
2498                                                    );
2499                                                }
2500                                            }),
2501                                        ),
2502                                )
2503                                .child(gradient_overlay),
2504                        )
2505                    })
2506                    .when(is_open, |this| {
2507                        this.child(
2508                            div()
2509                                .id(("thinking-content", ix))
2510                                .h_full()
2511                                .bg(editor_bg)
2512                                .text_ui_sm(cx)
2513                                .child(
2514                                    MarkdownElement::new(
2515                                        markdown.clone(),
2516                                        default_markdown_style(window, cx),
2517                                    )
2518                                    .on_url_click({
2519                                        let workspace = self.workspace.clone();
2520                                        move |text, window, cx| {
2521                                            open_markdown_link(text, workspace.clone(), window, cx);
2522                                        }
2523                                    }),
2524                                ),
2525                        )
2526                    })
2527            } else {
2528                this.v_flex()
2529                    .mt_neg_2()
2530                    .child(
2531                        h_flex()
2532                            .group("disclosure-header")
2533                            .pr_1()
2534                            .justify_between()
2535                            .opacity(0.8)
2536                            .hover(|style| style.opacity(1.))
2537                            .child(
2538                                h_flex()
2539                                    .gap_1p5()
2540                                    .child(
2541                                        Icon::new(IconName::LightBulb)
2542                                            .size(IconSize::XSmall)
2543                                            .color(Color::Muted),
2544                                    )
2545                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2546                            )
2547                            .child(
2548                                div().visible_on_hover("disclosure-header").child(
2549                                    Disclosure::new("thinking-disclosure", is_open)
2550                                        .opened_icon(IconName::ChevronUp)
2551                                        .closed_icon(IconName::ChevronDown)
2552                                        .on_click(cx.listener({
2553                                            move |this, _event, _window, _cx| {
2554                                                let is_open = this
2555                                                    .expanded_thinking_segments
2556                                                    .entry((message_id, ix))
2557                                                    .or_insert(false);
2558
2559                                                *is_open = !*is_open;
2560                                            }
2561                                        })),
2562                                ),
2563                            ),
2564                    )
2565                    .child(
2566                        div()
2567                            .id(("thinking-content", ix))
2568                            .relative()
2569                            .mt_1p5()
2570                            .ml_1p5()
2571                            .pl_2p5()
2572                            .border_l_1()
2573                            .border_color(cx.theme().colors().border_variant)
2574                            .text_ui_sm(cx)
2575                            .when(is_open, |this| {
2576                                this.child(
2577                                    MarkdownElement::new(
2578                                        markdown.clone(),
2579                                        default_markdown_style(window, cx),
2580                                    )
2581                                    .on_url_click({
2582                                        let workspace = self.workspace.clone();
2583                                        move |text, window, cx| {
2584                                            open_markdown_link(text, workspace.clone(), window, cx);
2585                                        }
2586                                    }),
2587                                )
2588                            }),
2589                    )
2590            }
2591        })
2592    }
2593
2594    fn render_tool_use(
2595        &self,
2596        tool_use: ToolUse,
2597        window: &mut Window,
2598        workspace: WeakEntity<Workspace>,
2599        cx: &mut Context<Self>,
2600    ) -> impl IntoElement + use<> {
2601        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2602            return card.render(&tool_use.status, window, workspace, cx);
2603        }
2604
2605        let is_open = self
2606            .expanded_tool_uses
2607            .get(&tool_use.id)
2608            .copied()
2609            .unwrap_or_default();
2610
2611        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2612
2613        let fs = self
2614            .workspace
2615            .upgrade()
2616            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2617        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2618        let needs_confirmation_tools = tool_use.needs_confirmation;
2619
2620        let status_icons = div().child(match &tool_use.status {
2621            ToolUseStatus::NeedsConfirmation => {
2622                let icon = Icon::new(IconName::Warning)
2623                    .color(Color::Warning)
2624                    .size(IconSize::Small);
2625                icon.into_any_element()
2626            }
2627            ToolUseStatus::Pending
2628            | ToolUseStatus::InputStillStreaming
2629            | ToolUseStatus::Running => {
2630                let icon = Icon::new(IconName::ArrowCircle)
2631                    .color(Color::Accent)
2632                    .size(IconSize::Small);
2633                icon.with_animation(
2634                    "arrow-circle",
2635                    Animation::new(Duration::from_secs(2)).repeat(),
2636                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2637                )
2638                .into_any_element()
2639            }
2640            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2641            ToolUseStatus::Error(_) => {
2642                let icon = Icon::new(IconName::Close)
2643                    .color(Color::Error)
2644                    .size(IconSize::Small);
2645                icon.into_any_element()
2646            }
2647        });
2648
2649        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2650        let results_content_container = || v_flex().p_2().gap_0p5();
2651
2652        let results_content = v_flex()
2653            .gap_1()
2654            .child(
2655                results_content_container()
2656                    .child(
2657                        Label::new("Input")
2658                            .size(LabelSize::XSmall)
2659                            .color(Color::Muted)
2660                            .buffer_font(cx),
2661                    )
2662                    .child(
2663                        div()
2664                            .w_full()
2665                            .text_ui_sm(cx)
2666                            .children(rendered_tool_use.as_ref().map(|rendered| {
2667                                MarkdownElement::new(
2668                                    rendered.input.clone(),
2669                                    tool_use_markdown_style(window, cx),
2670                                )
2671                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2672                                    copy_button: false,
2673                                    border: false,
2674                                })
2675                                .on_url_click({
2676                                    let workspace = self.workspace.clone();
2677                                    move |text, window, cx| {
2678                                        open_markdown_link(text, workspace.clone(), window, cx);
2679                                    }
2680                                })
2681                            })),
2682                    ),
2683            )
2684            .map(|container| match tool_use.status {
2685                ToolUseStatus::Finished(_) => container.child(
2686                    results_content_container()
2687                        .border_t_1()
2688                        .border_color(self.tool_card_border_color(cx))
2689                        .child(
2690                            Label::new("Result")
2691                                .size(LabelSize::XSmall)
2692                                .color(Color::Muted)
2693                                .buffer_font(cx),
2694                        )
2695                        .child(div().w_full().text_ui_sm(cx).children(
2696                            rendered_tool_use.as_ref().map(|rendered| {
2697                                MarkdownElement::new(
2698                                    rendered.output.clone(),
2699                                    tool_use_markdown_style(window, cx),
2700                                )
2701                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2702                                    copy_button: false,
2703                                    border: false,
2704                                })
2705                                .on_url_click({
2706                                    let workspace = self.workspace.clone();
2707                                    move |text, window, cx| {
2708                                        open_markdown_link(text, workspace.clone(), window, cx);
2709                                    }
2710                                })
2711                                .into_any_element()
2712                            }),
2713                        )),
2714                ),
2715                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2716                    results_content_container()
2717                        .border_t_1()
2718                        .border_color(self.tool_card_border_color(cx))
2719                        .child(
2720                            h_flex()
2721                                .gap_1()
2722                                .child(
2723                                    Icon::new(IconName::ArrowCircle)
2724                                        .size(IconSize::Small)
2725                                        .color(Color::Accent)
2726                                        .with_animation(
2727                                            "arrow-circle",
2728                                            Animation::new(Duration::from_secs(2)).repeat(),
2729                                            |icon, delta| {
2730                                                icon.transform(Transformation::rotate(percentage(
2731                                                    delta,
2732                                                )))
2733                                            },
2734                                        ),
2735                                )
2736                                .child(
2737                                    Label::new("Running…")
2738                                        .size(LabelSize::XSmall)
2739                                        .color(Color::Muted)
2740                                        .buffer_font(cx),
2741                                ),
2742                        ),
2743                ),
2744                ToolUseStatus::Error(_) => container.child(
2745                    results_content_container()
2746                        .border_t_1()
2747                        .border_color(self.tool_card_border_color(cx))
2748                        .child(
2749                            Label::new("Error")
2750                                .size(LabelSize::XSmall)
2751                                .color(Color::Muted)
2752                                .buffer_font(cx),
2753                        )
2754                        .child(
2755                            div()
2756                                .text_ui_sm(cx)
2757                                .children(rendered_tool_use.as_ref().map(|rendered| {
2758                                    MarkdownElement::new(
2759                                        rendered.output.clone(),
2760                                        tool_use_markdown_style(window, cx),
2761                                    )
2762                                    .on_url_click({
2763                                        let workspace = self.workspace.clone();
2764                                        move |text, window, cx| {
2765                                            open_markdown_link(text, workspace.clone(), window, cx);
2766                                        }
2767                                    })
2768                                    .into_any_element()
2769                                })),
2770                        ),
2771                ),
2772                ToolUseStatus::Pending => container,
2773                ToolUseStatus::NeedsConfirmation => container.child(
2774                    results_content_container()
2775                        .border_t_1()
2776                        .border_color(self.tool_card_border_color(cx))
2777                        .child(
2778                            Label::new("Asking Permission")
2779                                .size(LabelSize::Small)
2780                                .color(Color::Muted)
2781                                .buffer_font(cx),
2782                        ),
2783                ),
2784            });
2785
2786        let gradient_overlay = |color: Hsla| {
2787            div()
2788                .h_full()
2789                .absolute()
2790                .w_12()
2791                .bottom_0()
2792                .map(|element| {
2793                    if is_status_finished {
2794                        element.right_6()
2795                    } else {
2796                        element.right(px(44.))
2797                    }
2798                })
2799                .bg(linear_gradient(
2800                    90.,
2801                    linear_color_stop(color, 1.),
2802                    linear_color_stop(color.opacity(0.2), 0.),
2803                ))
2804        };
2805
2806        v_flex().gap_1().mb_2().map(|element| {
2807            if !needs_confirmation_tools {
2808                element.child(
2809                    v_flex()
2810                        .child(
2811                            h_flex()
2812                                .group("disclosure-header")
2813                                .relative()
2814                                .gap_1p5()
2815                                .justify_between()
2816                                .opacity(0.8)
2817                                .hover(|style| style.opacity(1.))
2818                                .when(!is_status_finished, |this| this.pr_2())
2819                                .child(
2820                                    h_flex()
2821                                        .id("tool-label-container")
2822                                        .gap_1p5()
2823                                        .max_w_full()
2824                                        .overflow_x_scroll()
2825                                        .child(
2826                                            Icon::new(tool_use.icon)
2827                                                .size(IconSize::XSmall)
2828                                                .color(Color::Muted),
2829                                        )
2830                                        .child(
2831                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2832                                                rendered_tool_use.map(|rendered| MarkdownElement::new(rendered.label, tool_use_markdown_style(window, cx)).on_url_click({let workspace = self.workspace.clone(); move |text, window, cx| {
2833                                                    open_markdown_link(text, workspace.clone(), window, cx);
2834                                                }}))
2835                                            ),
2836                                        ),
2837                                )
2838                                .child(
2839                                    h_flex()
2840                                        .gap_1()
2841                                        .child(
2842                                            div().visible_on_hover("disclosure-header").child(
2843                                                Disclosure::new("tool-use-disclosure", is_open)
2844                                                    .opened_icon(IconName::ChevronUp)
2845                                                    .closed_icon(IconName::ChevronDown)
2846                                                    .on_click(cx.listener({
2847                                                        let tool_use_id = tool_use.id.clone();
2848                                                        move |this, _event, _window, _cx| {
2849                                                            let is_open = this
2850                                                                .expanded_tool_uses
2851                                                                .entry(tool_use_id.clone())
2852                                                                .or_insert(false);
2853
2854                                                            *is_open = !*is_open;
2855                                                        }
2856                                                    })),
2857                                            ),
2858                                        )
2859                                        .child(status_icons),
2860                                )
2861                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2862                        )
2863                        .map(|parent| {
2864                            if !is_open {
2865                                return parent;
2866                            }
2867
2868                            parent.child(
2869                                v_flex()
2870                                    .mt_1()
2871                                    .border_1()
2872                                    .border_color(self.tool_card_border_color(cx))
2873                                    .bg(cx.theme().colors().editor_background)
2874                                    .rounded_lg()
2875                                    .child(results_content),
2876                            )
2877                        }),
2878                )
2879            } else {
2880                v_flex()
2881                    .mb_2()
2882                    .rounded_lg()
2883                    .border_1()
2884                    .border_color(self.tool_card_border_color(cx))
2885                    .overflow_hidden()
2886                    .child(
2887                        h_flex()
2888                            .group("disclosure-header")
2889                            .relative()
2890                            .justify_between()
2891                            .py_1()
2892                            .map(|element| {
2893                                if is_status_finished {
2894                                    element.pl_2().pr_0p5()
2895                                } else {
2896                                    element.px_2()
2897                                }
2898                            })
2899                            .bg(self.tool_card_header_bg(cx))
2900                            .map(|element| {
2901                                if is_open {
2902                                    element.border_b_1().rounded_t_md()
2903                                } else if needs_confirmation {
2904                                    element.rounded_t_md()
2905                                } else {
2906                                    element.rounded_md()
2907                                }
2908                            })
2909                            .border_color(self.tool_card_border_color(cx))
2910                            .child(
2911                                h_flex()
2912                                    .id("tool-label-container")
2913                                    .gap_1p5()
2914                                    .max_w_full()
2915                                    .overflow_x_scroll()
2916                                    .child(
2917                                        Icon::new(tool_use.icon)
2918                                            .size(IconSize::XSmall)
2919                                            .color(Color::Muted),
2920                                    )
2921                                    .child(
2922                                        h_flex().pr_8().text_ui_sm(cx).children(
2923                                            rendered_tool_use.map(|rendered| MarkdownElement::new(rendered.label, tool_use_markdown_style(window, cx)).on_url_click({let workspace = self.workspace.clone(); move |text, window, cx| {
2924                                                open_markdown_link(text, workspace.clone(), window, cx);
2925                                            }}))
2926                                        ),
2927                                    ),
2928                            )
2929                            .child(
2930                                h_flex()
2931                                    .gap_1()
2932                                    .child(
2933                                        div().visible_on_hover("disclosure-header").child(
2934                                            Disclosure::new("tool-use-disclosure", is_open)
2935                                                .opened_icon(IconName::ChevronUp)
2936                                                .closed_icon(IconName::ChevronDown)
2937                                                .on_click(cx.listener({
2938                                                    let tool_use_id = tool_use.id.clone();
2939                                                    move |this, _event, _window, _cx| {
2940                                                        let is_open = this
2941                                                            .expanded_tool_uses
2942                                                            .entry(tool_use_id.clone())
2943                                                            .or_insert(false);
2944
2945                                                        *is_open = !*is_open;
2946                                                    }
2947                                                })),
2948                                        ),
2949                                    )
2950                                    .child(status_icons),
2951                            )
2952                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
2953                    )
2954                    .map(|parent| {
2955                        if !is_open {
2956                            return parent;
2957                        }
2958
2959                        parent.child(
2960                            v_flex()
2961                                .bg(cx.theme().colors().editor_background)
2962                                .map(|element| {
2963                                    if  needs_confirmation {
2964                                        element.rounded_none()
2965                                    } else {
2966                                        element.rounded_b_lg()
2967                                    }
2968                                })
2969                                .child(results_content),
2970                        )
2971                    })
2972                    .when(needs_confirmation, |this| {
2973                        this.child(
2974                            h_flex()
2975                                .py_1()
2976                                .pl_2()
2977                                .pr_1()
2978                                .gap_1()
2979                                .justify_between()
2980                                .bg(cx.theme().colors().editor_background)
2981                                .border_t_1()
2982                                .border_color(self.tool_card_border_color(cx))
2983                                .rounded_b_lg()
2984                                .child(
2985                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
2986                                )
2987                                .child(
2988                                    h_flex()
2989                                        .gap_0p5()
2990                                        .child({
2991                                            let tool_id = tool_use.id.clone();
2992                                            Button::new(
2993                                                "always-allow-tool-action",
2994                                                "Always Allow",
2995                                            )
2996                                            .label_size(LabelSize::Small)
2997                                            .icon(IconName::CheckDouble)
2998                                            .icon_position(IconPosition::Start)
2999                                            .icon_size(IconSize::Small)
3000                                            .icon_color(Color::Success)
3001                                            .tooltip(move |window, cx|  {
3002                                                Tooltip::with_meta(
3003                                                    "Never ask for permission",
3004                                                    None,
3005                                                    "Restore the original behavior in your Agent Panel settings",
3006                                                    window,
3007                                                    cx,
3008                                                )
3009                                            })
3010                                            .on_click(cx.listener(
3011                                                move |this, event, window, cx| {
3012                                                    if let Some(fs) = fs.clone() {
3013                                                        update_settings_file::<AssistantSettings>(
3014                                                            fs.clone(),
3015                                                            cx,
3016                                                            |settings, _| {
3017                                                                settings.set_always_allow_tool_actions(true);
3018                                                            },
3019                                                        );
3020                                                    }
3021                                                    this.handle_allow_tool(
3022                                                        tool_id.clone(),
3023                                                        event,
3024                                                        window,
3025                                                        cx,
3026                                                    )
3027                                                },
3028                                            ))
3029                                        })
3030                                        .child(ui::Divider::vertical())
3031                                        .child({
3032                                            let tool_id = tool_use.id.clone();
3033                                            Button::new("allow-tool-action", "Allow")
3034                                                .label_size(LabelSize::Small)
3035                                                .icon(IconName::Check)
3036                                                .icon_position(IconPosition::Start)
3037                                                .icon_size(IconSize::Small)
3038                                                .icon_color(Color::Success)
3039                                                .on_click(cx.listener(
3040                                                    move |this, event, window, cx| {
3041                                                        this.handle_allow_tool(
3042                                                            tool_id.clone(),
3043                                                            event,
3044                                                            window,
3045                                                            cx,
3046                                                        )
3047                                                    },
3048                                                ))
3049                                        })
3050                                        .child({
3051                                            let tool_id = tool_use.id.clone();
3052                                            let tool_name: Arc<str> = tool_use.name.into();
3053                                            Button::new("deny-tool", "Deny")
3054                                                .label_size(LabelSize::Small)
3055                                                .icon(IconName::Close)
3056                                                .icon_position(IconPosition::Start)
3057                                                .icon_size(IconSize::Small)
3058                                                .icon_color(Color::Error)
3059                                                .on_click(cx.listener(
3060                                                    move |this, event, window, cx| {
3061                                                        this.handle_deny_tool(
3062                                                            tool_id.clone(),
3063                                                            tool_name.clone(),
3064                                                            event,
3065                                                            window,
3066                                                            cx,
3067                                                        )
3068                                                    },
3069                                                ))
3070                                        }),
3071                                ),
3072                        )
3073                    })
3074            }
3075        }).into_any_element()
3076    }
3077
3078    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3079        let project_context = self.thread.read(cx).project_context();
3080        let project_context = project_context.borrow();
3081        let Some(project_context) = project_context.as_ref() else {
3082            return div().into_any();
3083        };
3084
3085        let user_rules_text = if project_context.user_rules.is_empty() {
3086            None
3087        } else if project_context.user_rules.len() == 1 {
3088            let user_rules = &project_context.user_rules[0];
3089
3090            match user_rules.title.as_ref() {
3091                Some(title) => Some(format!("Using \"{title}\" user rule")),
3092                None => Some("Using user rule".into()),
3093            }
3094        } else {
3095            Some(format!(
3096                "Using {} user rules",
3097                project_context.user_rules.len()
3098            ))
3099        };
3100
3101        let first_user_rules_id = project_context
3102            .user_rules
3103            .first()
3104            .map(|user_rules| user_rules.uuid.0);
3105
3106        let rules_files = project_context
3107            .worktrees
3108            .iter()
3109            .filter_map(|worktree| worktree.rules_file.as_ref())
3110            .collect::<Vec<_>>();
3111
3112        let rules_file_text = match rules_files.as_slice() {
3113            &[] => None,
3114            &[rules_file] => Some(format!(
3115                "Using project {:?} file",
3116                rules_file.path_in_worktree
3117            )),
3118            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3119        };
3120
3121        if user_rules_text.is_none() && rules_file_text.is_none() {
3122            return div().into_any();
3123        }
3124
3125        v_flex()
3126            .pt_2()
3127            .px_2p5()
3128            .gap_1()
3129            .when_some(user_rules_text, |parent, user_rules_text| {
3130                parent.child(
3131                    h_flex()
3132                        .w_full()
3133                        .child(
3134                            Icon::new(RULES_ICON)
3135                                .size(IconSize::XSmall)
3136                                .color(Color::Disabled),
3137                        )
3138                        .child(
3139                            Label::new(user_rules_text)
3140                                .size(LabelSize::XSmall)
3141                                .color(Color::Muted)
3142                                .truncate()
3143                                .buffer_font(cx)
3144                                .ml_1p5()
3145                                .mr_0p5(),
3146                        )
3147                        .child(
3148                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3149                                .shape(ui::IconButtonShape::Square)
3150                                .icon_size(IconSize::XSmall)
3151                                .icon_color(Color::Ignored)
3152                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3153                                .tooltip(Tooltip::text("View User Rules"))
3154                                .on_click(move |_event, window, cx| {
3155                                    window.dispatch_action(
3156                                        Box::new(OpenRulesLibrary {
3157                                            prompt_to_select: first_user_rules_id,
3158                                        }),
3159                                        cx,
3160                                    )
3161                                }),
3162                        ),
3163                )
3164            })
3165            .when_some(rules_file_text, |parent, rules_file_text| {
3166                parent.child(
3167                    h_flex()
3168                        .w_full()
3169                        .child(
3170                            Icon::new(IconName::File)
3171                                .size(IconSize::XSmall)
3172                                .color(Color::Disabled),
3173                        )
3174                        .child(
3175                            Label::new(rules_file_text)
3176                                .size(LabelSize::XSmall)
3177                                .color(Color::Muted)
3178                                .buffer_font(cx)
3179                                .ml_1p5()
3180                                .mr_0p5(),
3181                        )
3182                        .child(
3183                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3184                                .shape(ui::IconButtonShape::Square)
3185                                .icon_size(IconSize::XSmall)
3186                                .icon_color(Color::Ignored)
3187                                .on_click(cx.listener(Self::handle_open_rules))
3188                                .tooltip(Tooltip::text("View Rules")),
3189                        ),
3190                )
3191            })
3192            .into_any()
3193    }
3194
3195    fn handle_allow_tool(
3196        &mut self,
3197        tool_use_id: LanguageModelToolUseId,
3198        _: &ClickEvent,
3199        window: &mut Window,
3200        cx: &mut Context<Self>,
3201    ) {
3202        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3203            .thread
3204            .read(cx)
3205            .pending_tool(&tool_use_id)
3206            .map(|tool_use| tool_use.status.clone())
3207        {
3208            self.thread.update(cx, |thread, cx| {
3209                thread.run_tool(
3210                    c.tool_use_id.clone(),
3211                    c.ui_text.clone(),
3212                    c.input.clone(),
3213                    &c.messages,
3214                    c.tool.clone(),
3215                    Some(window.window_handle()),
3216                    cx,
3217                );
3218            });
3219        }
3220    }
3221
3222    fn handle_deny_tool(
3223        &mut self,
3224        tool_use_id: LanguageModelToolUseId,
3225        tool_name: Arc<str>,
3226        _: &ClickEvent,
3227        window: &mut Window,
3228        cx: &mut Context<Self>,
3229    ) {
3230        let window_handle = window.window_handle();
3231        self.thread.update(cx, |thread, cx| {
3232            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3233        });
3234    }
3235
3236    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3237        let project_context = self.thread.read(cx).project_context();
3238        let project_context = project_context.borrow();
3239        let Some(project_context) = project_context.as_ref() else {
3240            return;
3241        };
3242
3243        let project_entry_ids = project_context
3244            .worktrees
3245            .iter()
3246            .flat_map(|worktree| worktree.rules_file.as_ref())
3247            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3248            .collect::<Vec<_>>();
3249
3250        self.workspace
3251            .update(cx, move |workspace, cx| {
3252                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3253                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3254                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3255                let project = workspace.project().read(cx);
3256                let project_paths = project_entry_ids
3257                    .into_iter()
3258                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3259                    .collect::<Vec<_>>();
3260                for project_path in project_paths {
3261                    workspace
3262                        .open_path(project_path, None, true, window, cx)
3263                        .detach_and_log_err(cx);
3264                }
3265            })
3266            .ok();
3267    }
3268
3269    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3270        for window in self.notifications.drain(..) {
3271            window
3272                .update(cx, |_, window, _| {
3273                    window.remove_window();
3274                })
3275                .ok();
3276
3277            self.notification_subscriptions.remove(&window);
3278        }
3279    }
3280
3281    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3282        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3283            return None;
3284        }
3285
3286        Some(
3287            div()
3288                .occlude()
3289                .id("active-thread-scrollbar")
3290                .on_mouse_move(cx.listener(|_, _, _, cx| {
3291                    cx.notify();
3292                    cx.stop_propagation()
3293                }))
3294                .on_hover(|_, _, cx| {
3295                    cx.stop_propagation();
3296                })
3297                .on_any_mouse_down(|_, _, cx| {
3298                    cx.stop_propagation();
3299                })
3300                .on_mouse_up(
3301                    MouseButton::Left,
3302                    cx.listener(|_, _, _, cx| {
3303                        cx.stop_propagation();
3304                    }),
3305                )
3306                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3307                    cx.notify();
3308                }))
3309                .h_full()
3310                .absolute()
3311                .right_1()
3312                .top_1()
3313                .bottom_0()
3314                .w(px(12.))
3315                .cursor_default()
3316                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3317        )
3318    }
3319
3320    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3321        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3322        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3323            cx.background_executor()
3324                .timer(SCROLLBAR_SHOW_INTERVAL)
3325                .await;
3326            thread
3327                .update(cx, |thread, cx| {
3328                    if !thread.scrollbar_state.is_dragging() {
3329                        thread.show_scrollbar = false;
3330                        cx.notify();
3331                    }
3332                })
3333                .log_err();
3334        }))
3335    }
3336}
3337
3338pub enum ActiveThreadEvent {
3339    EditingMessageTokenCountChanged,
3340}
3341
3342impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3343
3344impl Render for ActiveThread {
3345    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3346        v_flex()
3347            .size_full()
3348            .relative()
3349            .on_mouse_move(cx.listener(|this, _, _, cx| {
3350                this.show_scrollbar = true;
3351                this.hide_scrollbar_later(cx);
3352                cx.notify();
3353            }))
3354            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3355                this.show_scrollbar = true;
3356                this.hide_scrollbar_later(cx);
3357                cx.notify();
3358            }))
3359            .on_mouse_up(
3360                MouseButton::Left,
3361                cx.listener(|this, _, _, cx| {
3362                    this.hide_scrollbar_later(cx);
3363                }),
3364            )
3365            .child(list(self.list_state.clone()).flex_grow())
3366            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3367                this.child(scrollbar)
3368            })
3369    }
3370}
3371
3372pub(crate) fn open_context(
3373    context: &AgentContextHandle,
3374    workspace: Entity<Workspace>,
3375    window: &mut Window,
3376    cx: &mut App,
3377) {
3378    match context {
3379        AgentContextHandle::File(file_context) => {
3380            if let Some(project_path) = file_context.project_path(cx) {
3381                workspace.update(cx, |workspace, cx| {
3382                    workspace
3383                        .open_path(project_path, None, true, window, cx)
3384                        .detach_and_log_err(cx);
3385                });
3386            }
3387        }
3388
3389        AgentContextHandle::Directory(directory_context) => {
3390            let entry_id = directory_context.entry_id;
3391            workspace.update(cx, |workspace, cx| {
3392                workspace.project().update(cx, |_project, cx| {
3393                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3394                })
3395            })
3396        }
3397
3398        AgentContextHandle::Symbol(symbol_context) => {
3399            let buffer = symbol_context.buffer.read(cx);
3400            if let Some(project_path) = buffer.project_path(cx) {
3401                let snapshot = buffer.snapshot();
3402                let target_position = symbol_context.range.start.to_point(&snapshot);
3403                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3404                    .detach();
3405            }
3406        }
3407
3408        AgentContextHandle::Selection(selection_context) => {
3409            let buffer = selection_context.buffer.read(cx);
3410            if let Some(project_path) = buffer.project_path(cx) {
3411                let snapshot = buffer.snapshot();
3412                let target_position = selection_context.range.start.to_point(&snapshot);
3413
3414                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3415                    .detach();
3416            }
3417        }
3418
3419        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3420            cx.open_url(&fetched_url_context.url);
3421        }
3422
3423        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3424            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3425                panel.update(cx, |panel, cx| {
3426                    let thread_id = thread_context.thread.read(cx).id().clone();
3427                    panel
3428                        .open_thread_by_id(&thread_id, window, cx)
3429                        .detach_and_log_err(cx)
3430                });
3431            }
3432        }),
3433
3434        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3435            Box::new(OpenRulesLibrary {
3436                prompt_to_select: Some(rules_context.prompt_id.0),
3437            }),
3438            cx,
3439        ),
3440
3441        AgentContextHandle::Image(_) => {}
3442    }
3443}
3444
3445fn open_editor_at_position(
3446    project_path: project::ProjectPath,
3447    target_position: Point,
3448    workspace: &Entity<Workspace>,
3449    window: &mut Window,
3450    cx: &mut App,
3451) -> Task<()> {
3452    let open_task = workspace.update(cx, |workspace, cx| {
3453        workspace.open_path(project_path, None, true, window, cx)
3454    });
3455    window.spawn(cx, async move |cx| {
3456        if let Some(active_editor) = open_task
3457            .await
3458            .log_err()
3459            .and_then(|item| item.downcast::<Editor>())
3460        {
3461            active_editor
3462                .downgrade()
3463                .update_in(cx, |editor, window, cx| {
3464                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3465                })
3466                .log_err();
3467        }
3468    })
3469}
3470
3471#[cfg(test)]
3472mod tests {
3473    use assistant_tool::{ToolRegistry, ToolWorkingSet};
3474    use context_server::ContextServerSettings;
3475    use editor::EditorSettings;
3476    use fs::FakeFs;
3477    use gpui::{TestAppContext, VisualTestContext};
3478    use language_model::{LanguageModel, fake_provider::FakeLanguageModel};
3479    use project::Project;
3480    use prompt_store::PromptBuilder;
3481    use serde_json::json;
3482    use settings::SettingsStore;
3483    use util::path;
3484
3485    use crate::{ContextLoadResult, thread_store};
3486
3487    use super::*;
3488
3489    #[gpui::test]
3490    async fn test_current_completion_cancelled_when_message_edited(cx: &mut TestAppContext) {
3491        init_test_settings(cx);
3492
3493        let project = create_test_project(
3494            cx,
3495            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
3496        )
3497        .await;
3498
3499        let (cx, active_thread, thread, model) = setup_test_environment(cx, project.clone()).await;
3500
3501        // Insert user message without any context (empty context vector)
3502        let message = thread.update(cx, |thread, cx| {
3503            let message_id = thread.insert_user_message(
3504                "What is the best way to learn Rust?",
3505                ContextLoadResult::default(),
3506                None,
3507                vec![],
3508                cx,
3509            );
3510            thread
3511                .message(message_id)
3512                .expect("message should exist")
3513                .clone()
3514        });
3515
3516        // Stream response to user message
3517        thread.update(cx, |thread, cx| {
3518            let request = thread.to_completion_request(model.clone(), cx);
3519            thread.stream_completion(request, model, cx.active_window(), cx)
3520        });
3521        let generating = thread.update(cx, |thread, _cx| thread.is_generating());
3522        assert!(generating, "There should be one pending completion");
3523
3524        // Edit the previous message
3525        active_thread.update_in(cx, |active_thread, window, cx| {
3526            active_thread.start_editing_message(message.id, &message.segments, window, cx);
3527        });
3528
3529        // Check that the stream was cancelled
3530        let generating = thread.update(cx, |thread, _cx| thread.is_generating());
3531        assert!(!generating, "The completion should have been cancelled");
3532    }
3533
3534    fn init_test_settings(cx: &mut TestAppContext) {
3535        cx.update(|cx| {
3536            let settings_store = SettingsStore::test(cx);
3537            cx.set_global(settings_store);
3538            language::init(cx);
3539            Project::init_settings(cx);
3540            AssistantSettings::register(cx);
3541            prompt_store::init(cx);
3542            thread_store::init(cx);
3543            workspace::init_settings(cx);
3544            language_model::init_settings(cx);
3545            ThemeSettings::register(cx);
3546            ContextServerSettings::register(cx);
3547            EditorSettings::register(cx);
3548            ToolRegistry::default_global(cx);
3549        });
3550    }
3551
3552    // Helper to create a test project with test files
3553    async fn create_test_project(
3554        cx: &mut TestAppContext,
3555        files: serde_json::Value,
3556    ) -> Entity<Project> {
3557        let fs = FakeFs::new(cx.executor());
3558        fs.insert_tree(path!("/test"), files).await;
3559        Project::test(fs, [path!("/test").as_ref()], cx).await
3560    }
3561
3562    async fn setup_test_environment(
3563        cx: &mut TestAppContext,
3564        project: Entity<Project>,
3565    ) -> (
3566        &mut VisualTestContext,
3567        Entity<ActiveThread>,
3568        Entity<Thread>,
3569        Arc<dyn LanguageModel>,
3570    ) {
3571        let (workspace, cx) =
3572            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
3573
3574        let thread_store = cx
3575            .update(|_, cx| {
3576                ThreadStore::load(
3577                    project.clone(),
3578                    cx.new(|_| ToolWorkingSet::default()),
3579                    None,
3580                    Arc::new(PromptBuilder::new(None).unwrap()),
3581                    cx,
3582                )
3583            })
3584            .await
3585            .unwrap();
3586
3587        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
3588        let context_store = cx.new(|_cx| ContextStore::new(project.downgrade(), None));
3589
3590        let model = FakeLanguageModel::default();
3591        let model: Arc<dyn LanguageModel> = Arc::new(model);
3592
3593        let language_registry = LanguageRegistry::new(cx.executor());
3594        let language_registry = Arc::new(language_registry);
3595
3596        let active_thread = cx.update(|window, cx| {
3597            cx.new(|cx| {
3598                ActiveThread::new(
3599                    thread.clone(),
3600                    thread_store.clone(),
3601                    context_store.clone(),
3602                    language_registry.clone(),
3603                    workspace.downgrade(),
3604                    window,
3605                    cx,
3606                )
3607            })
3608        });
3609
3610        (cx, active_thread, thread, model)
3611    }
3612}