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, TextThreadStore, 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    text_thread_store: Entity<TextThreadStore>,
  60    thread: Entity<Thread>,
  61    workspace: WeakEntity<Workspace>,
  62    save_thread_task: Option<Task<()>>,
  63    messages: Vec<MessageId>,
  64    list_state: ListState,
  65    scrollbar_state: ScrollbarState,
  66    show_scrollbar: bool,
  67    hide_scrollbar_task: Option<Task<()>>,
  68    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  69    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  70    editing_message: Option<(MessageId, EditingMessageState)>,
  71    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  72    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  73    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  74    last_error: Option<ThreadError>,
  75    notifications: Vec<WindowHandle<AgentNotification>>,
  76    copied_code_block_ids: HashSet<(MessageId, usize)>,
  77    _subscriptions: Vec<Subscription>,
  78    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  79    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  80    _load_edited_message_context_task: Option<Task<()>>,
  81}
  82
  83struct RenderedMessage {
  84    language_registry: Arc<LanguageRegistry>,
  85    segments: Vec<RenderedMessageSegment>,
  86}
  87
  88#[derive(Clone)]
  89struct RenderedToolUse {
  90    label: Entity<Markdown>,
  91    input: Entity<Markdown>,
  92    output: Entity<Markdown>,
  93}
  94
  95impl RenderedMessage {
  96    fn from_segments(
  97        segments: &[MessageSegment],
  98        language_registry: Arc<LanguageRegistry>,
  99        cx: &mut App,
 100    ) -> Self {
 101        let mut this = Self {
 102            language_registry,
 103            segments: Vec::with_capacity(segments.len()),
 104        };
 105        for segment in segments {
 106            this.push_segment(segment, cx);
 107        }
 108        this
 109    }
 110
 111    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 112        if let Some(RenderedMessageSegment::Thinking {
 113            content,
 114            scroll_handle,
 115        }) = self.segments.last_mut()
 116        {
 117            content.update(cx, |markdown, cx| {
 118                markdown.append(text, cx);
 119            });
 120            scroll_handle.scroll_to_bottom();
 121        } else {
 122            self.segments.push(RenderedMessageSegment::Thinking {
 123                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 124                scroll_handle: ScrollHandle::default(),
 125            });
 126        }
 127    }
 128
 129    fn append_text(&mut self, text: &String, cx: &mut App) {
 130        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 131            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 132        } else {
 133            self.segments
 134                .push(RenderedMessageSegment::Text(parse_markdown(
 135                    SharedString::from(text),
 136                    self.language_registry.clone(),
 137                    cx,
 138                )));
 139        }
 140    }
 141
 142    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 143        match segment {
 144            MessageSegment::Thinking { text, .. } => {
 145                self.segments.push(RenderedMessageSegment::Thinking {
 146                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 147                    scroll_handle: ScrollHandle::default(),
 148                })
 149            }
 150            MessageSegment::Text(text) => {
 151                self.segments
 152                    .push(RenderedMessageSegment::Text(parse_markdown(
 153                        text.into(),
 154                        self.language_registry.clone(),
 155                        cx,
 156                    )))
 157            }
 158            MessageSegment::RedactedThinking(_) => {}
 159        };
 160    }
 161}
 162
 163enum RenderedMessageSegment {
 164    Thinking {
 165        content: Entity<Markdown>,
 166        scroll_handle: ScrollHandle,
 167    },
 168    Text(Entity<Markdown>),
 169}
 170
 171fn parse_markdown(
 172    text: SharedString,
 173    language_registry: Arc<LanguageRegistry>,
 174    cx: &mut App,
 175) -> Entity<Markdown> {
 176    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 177}
 178
 179fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 180    let theme_settings = ThemeSettings::get_global(cx);
 181    let colors = cx.theme().colors();
 182    let ui_font_size = TextSize::Default.rems(cx);
 183    let buffer_font_size = TextSize::Small.rems(cx);
 184    let mut text_style = window.text_style();
 185
 186    text_style.refine(&TextStyleRefinement {
 187        font_family: Some(theme_settings.ui_font.family.clone()),
 188        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 189        font_features: Some(theme_settings.ui_font.features.clone()),
 190        font_size: Some(ui_font_size.into()),
 191        color: Some(cx.theme().colors().text),
 192        ..Default::default()
 193    });
 194
 195    MarkdownStyle {
 196        base_text_style: text_style.clone(),
 197        syntax: cx.theme().syntax().clone(),
 198        selection_background_color: cx.theme().players().local().selection,
 199        code_block_overflow_x_scroll: true,
 200        table_overflow_x_scroll: true,
 201        heading_level_styles: Some(HeadingLevelStyles {
 202            h1: Some(TextStyleRefinement {
 203                font_size: Some(rems(1.15).into()),
 204                ..Default::default()
 205            }),
 206            h2: Some(TextStyleRefinement {
 207                font_size: Some(rems(1.1).into()),
 208                ..Default::default()
 209            }),
 210            h3: Some(TextStyleRefinement {
 211                font_size: Some(rems(1.05).into()),
 212                ..Default::default()
 213            }),
 214            h4: Some(TextStyleRefinement {
 215                font_size: Some(rems(1.).into()),
 216                ..Default::default()
 217            }),
 218            h5: Some(TextStyleRefinement {
 219                font_size: Some(rems(0.95).into()),
 220                ..Default::default()
 221            }),
 222            h6: Some(TextStyleRefinement {
 223                font_size: Some(rems(0.875).into()),
 224                ..Default::default()
 225            }),
 226        }),
 227        code_block: StyleRefinement {
 228            padding: EdgesRefinement {
 229                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 230                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 231                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 232                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 233            },
 234            background: Some(colors.editor_background.into()),
 235            text: Some(TextStyleRefinement {
 236                font_family: Some(theme_settings.buffer_font.family.clone()),
 237                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 238                font_features: Some(theme_settings.buffer_font.features.clone()),
 239                font_size: Some(buffer_font_size.into()),
 240                ..Default::default()
 241            }),
 242            ..Default::default()
 243        },
 244        inline_code: TextStyleRefinement {
 245            font_family: Some(theme_settings.buffer_font.family.clone()),
 246            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 247            font_features: Some(theme_settings.buffer_font.features.clone()),
 248            font_size: Some(buffer_font_size.into()),
 249            background_color: Some(colors.editor_foreground.opacity(0.08)),
 250            ..Default::default()
 251        },
 252        link: TextStyleRefinement {
 253            background_color: Some(colors.editor_foreground.opacity(0.025)),
 254            underline: Some(UnderlineStyle {
 255                color: Some(colors.text_accent.opacity(0.5)),
 256                thickness: px(1.),
 257                ..Default::default()
 258            }),
 259            ..Default::default()
 260        },
 261        link_callback: Some(Rc::new(move |url, cx| {
 262            if MentionLink::is_valid(url) {
 263                let colors = cx.theme().colors();
 264                Some(TextStyleRefinement {
 265                    background_color: Some(colors.element_background),
 266                    ..Default::default()
 267                })
 268            } else {
 269                None
 270            }
 271        })),
 272        ..Default::default()
 273    }
 274}
 275
 276fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 277    let theme_settings = ThemeSettings::get_global(cx);
 278    let colors = cx.theme().colors();
 279    let ui_font_size = TextSize::Default.rems(cx);
 280    let buffer_font_size = TextSize::Small.rems(cx);
 281    let mut text_style = window.text_style();
 282
 283    text_style.refine(&TextStyleRefinement {
 284        font_family: Some(theme_settings.ui_font.family.clone()),
 285        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 286        font_features: Some(theme_settings.ui_font.features.clone()),
 287        font_size: Some(ui_font_size.into()),
 288        color: Some(cx.theme().colors().text),
 289        ..Default::default()
 290    });
 291
 292    MarkdownStyle {
 293        base_text_style: text_style,
 294        syntax: cx.theme().syntax().clone(),
 295        selection_background_color: cx.theme().players().local().selection,
 296        code_block_overflow_x_scroll: true,
 297        code_block: StyleRefinement {
 298            margin: EdgesRefinement::default(),
 299            padding: EdgesRefinement::default(),
 300            background: Some(colors.editor_background.into()),
 301            border_color: None,
 302            border_widths: EdgesRefinement::default(),
 303            text: Some(TextStyleRefinement {
 304                font_family: Some(theme_settings.buffer_font.family.clone()),
 305                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 306                font_features: Some(theme_settings.buffer_font.features.clone()),
 307                font_size: Some(buffer_font_size.into()),
 308                ..Default::default()
 309            }),
 310            ..Default::default()
 311        },
 312        inline_code: TextStyleRefinement {
 313            font_family: Some(theme_settings.buffer_font.family.clone()),
 314            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 315            font_features: Some(theme_settings.buffer_font.features.clone()),
 316            font_size: Some(TextSize::XSmall.rems(cx).into()),
 317            ..Default::default()
 318        },
 319        heading: StyleRefinement {
 320            text: Some(TextStyleRefinement {
 321                font_size: Some(ui_font_size.into()),
 322                ..Default::default()
 323            }),
 324            ..Default::default()
 325        },
 326        ..Default::default()
 327    }
 328}
 329
 330const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 10;
 331
 332fn render_markdown_code_block(
 333    message_id: MessageId,
 334    ix: usize,
 335    kind: &CodeBlockKind,
 336    parsed_markdown: &ParsedMarkdown,
 337    metadata: CodeBlockMetadata,
 338    active_thread: Entity<ActiveThread>,
 339    workspace: WeakEntity<Workspace>,
 340    _window: &Window,
 341    cx: &App,
 342) -> Div {
 343    let label = match kind {
 344        CodeBlockKind::Indented => None,
 345        CodeBlockKind::Fenced => Some(
 346            h_flex()
 347                .gap_1()
 348                .child(
 349                    Icon::new(IconName::Code)
 350                        .color(Color::Muted)
 351                        .size(IconSize::XSmall),
 352                )
 353                .child(Label::new("untitled").size(LabelSize::Small))
 354                .into_any_element(),
 355        ),
 356        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 357            parsed_markdown.languages_by_name.get(raw_language_name),
 358            raw_language_name.clone(),
 359            cx,
 360        )),
 361        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 362            // We tell the model to use /dev/null for the path instead of using ```language
 363            // because otherwise it consistently fails to use code citations.
 364            if path_range.path.starts_with("/dev/null") {
 365                let ext = path_range
 366                    .path
 367                    .extension()
 368                    .and_then(OsStr::to_str)
 369                    .map(|str| SharedString::new(str.to_string()))
 370                    .unwrap_or_default();
 371
 372                render_code_language(
 373                    parsed_markdown
 374                        .languages_by_path
 375                        .get(&path_range.path)
 376                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 377                    ext,
 378                    cx,
 379                )
 380            } else {
 381                let content = if let Some(parent) = path_range.path.parent() {
 382                    h_flex()
 383                        .ml_1()
 384                        .gap_1()
 385                        .child(
 386                            Label::new(file_name.to_string_lossy().to_string())
 387                                .size(LabelSize::Small),
 388                        )
 389                        .child(
 390                            Label::new(parent.to_string_lossy().to_string())
 391                                .color(Color::Muted)
 392                                .size(LabelSize::Small),
 393                        )
 394                        .into_any_element()
 395                } else {
 396                    Label::new(path_range.path.to_string_lossy().to_string())
 397                        .size(LabelSize::Small)
 398                        .ml_1()
 399                        .into_any_element()
 400                };
 401
 402                h_flex()
 403                    .id(("code-block-header-label", ix))
 404                    .w_full()
 405                    .max_w_full()
 406                    .px_1()
 407                    .gap_0p5()
 408                    .cursor_pointer()
 409                    .rounded_sm()
 410                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 411                    .tooltip(Tooltip::text("Jump to File"))
 412                    .child(
 413                        h_flex()
 414                            .gap_0p5()
 415                            .children(
 416                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 417                                    .map(Icon::from_path)
 418                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 419                            )
 420                            .child(content)
 421                            .child(
 422                                Icon::new(IconName::ArrowUpRight)
 423                                    .size(IconSize::XSmall)
 424                                    .color(Color::Ignored),
 425                            ),
 426                    )
 427                    .on_click({
 428                        let path_range = path_range.clone();
 429                        move |_, window, cx| {
 430                            workspace
 431                                .update(cx, {
 432                                    |workspace, cx| {
 433                                        let Some(project_path) = workspace
 434                                            .project()
 435                                            .read(cx)
 436                                            .find_project_path(&path_range.path, cx)
 437                                        else {
 438                                            return;
 439                                        };
 440                                        let Some(target) = path_range.range.as_ref().map(|range| {
 441                                            Point::new(
 442                                                // Line number is 1-based
 443                                                range.start.line.saturating_sub(1),
 444                                                range.start.col.unwrap_or(0),
 445                                            )
 446                                        }) else {
 447                                            return;
 448                                        };
 449                                        let open_task = workspace.open_path(
 450                                            project_path,
 451                                            None,
 452                                            true,
 453                                            window,
 454                                            cx,
 455                                        );
 456                                        window
 457                                            .spawn(cx, async move |cx| {
 458                                                let item = open_task.await?;
 459                                                if let Some(active_editor) =
 460                                                    item.downcast::<Editor>()
 461                                                {
 462                                                    active_editor
 463                                                        .update_in(cx, |editor, window, cx| {
 464                                                            editor.go_to_singleton_buffer_point(
 465                                                                target, window, cx,
 466                                                            );
 467                                                        })
 468                                                        .ok();
 469                                                }
 470                                                anyhow::Ok(())
 471                                            })
 472                                            .detach_and_log_err(cx);
 473                                    }
 474                                })
 475                                .ok();
 476                        }
 477                    })
 478                    .into_any_element()
 479            }
 480        }),
 481    };
 482
 483    let codeblock_was_copied = active_thread
 484        .read(cx)
 485        .copied_code_block_ids
 486        .contains(&(message_id, ix));
 487
 488    let is_expanded = active_thread
 489        .read(cx)
 490        .expanded_code_blocks
 491        .get(&(message_id, ix))
 492        .copied()
 493        .unwrap_or(true);
 494
 495    let codeblock_header_bg = cx
 496        .theme()
 497        .colors()
 498        .element_background
 499        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 500
 501    let codeblock_header = h_flex()
 502        .py_1()
 503        .pl_1p5()
 504        .pr_1()
 505        .gap_1()
 506        .justify_between()
 507        .border_b_1()
 508        .border_color(cx.theme().colors().border.opacity(0.6))
 509        .bg(codeblock_header_bg)
 510        .rounded_t_md()
 511        .children(label)
 512        .child(
 513            h_flex()
 514                .visible_on_hover("codeblock_container")
 515                .gap_1()
 516                .child(
 517                    IconButton::new(
 518                        ("copy-markdown-code", ix),
 519                        if codeblock_was_copied {
 520                            IconName::Check
 521                        } else {
 522                            IconName::Copy
 523                        },
 524                    )
 525                    .icon_color(Color::Muted)
 526                    .shape(ui::IconButtonShape::Square)
 527                    .tooltip(Tooltip::text("Copy Code"))
 528                    .on_click({
 529                        let active_thread = active_thread.clone();
 530                        let parsed_markdown = parsed_markdown.clone();
 531                        let code_block_range = metadata.content_range.clone();
 532                        move |_event, _window, cx| {
 533                            active_thread.update(cx, |this, cx| {
 534                                this.copied_code_block_ids.insert((message_id, ix));
 535
 536                                let code =
 537                                    parsed_markdown.source()[code_block_range.clone()].to_string();
 538                                cx.write_to_clipboard(ClipboardItem::new_string(code));
 539
 540                                cx.spawn(async move |this, cx| {
 541                                    cx.background_executor().timer(Duration::from_secs(2)).await;
 542
 543                                    cx.update(|cx| {
 544                                        this.update(cx, |this, cx| {
 545                                            this.copied_code_block_ids.remove(&(message_id, ix));
 546                                            cx.notify();
 547                                        })
 548                                    })
 549                                    .ok();
 550                                })
 551                                .detach();
 552                            });
 553                        }
 554                    }),
 555                )
 556                .when(
 557                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 558                    |header| {
 559                        header.child(
 560                            IconButton::new(
 561                                ("expand-collapse-code", ix),
 562                                if is_expanded {
 563                                    IconName::ChevronUp
 564                                } else {
 565                                    IconName::ChevronDown
 566                                },
 567                            )
 568                            .icon_color(Color::Muted)
 569                            .shape(ui::IconButtonShape::Square)
 570                            .tooltip(Tooltip::text(if is_expanded {
 571                                "Collapse Code"
 572                            } else {
 573                                "Expand Code"
 574                            }))
 575                            .on_click({
 576                                let active_thread = active_thread.clone();
 577                                move |_event, _window, cx| {
 578                                    active_thread.update(cx, |this, cx| {
 579                                        let is_expanded = this
 580                                            .expanded_code_blocks
 581                                            .entry((message_id, ix))
 582                                            .or_insert(true);
 583                                        *is_expanded = !*is_expanded;
 584                                        cx.notify();
 585                                    });
 586                                }
 587                            }),
 588                        )
 589                    },
 590                ),
 591        );
 592
 593    v_flex()
 594        .group("codeblock_container")
 595        .my_2()
 596        .overflow_hidden()
 597        .rounded_lg()
 598        .border_1()
 599        .border_color(cx.theme().colors().border.opacity(0.6))
 600        .bg(cx.theme().colors().editor_background)
 601        .child(codeblock_header)
 602        .when(
 603            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 604            |this| {
 605                if is_expanded {
 606                    this.h_full()
 607                } else {
 608                    this.max_h_80()
 609                }
 610            },
 611        )
 612}
 613
 614fn render_code_language(
 615    language: Option<&Arc<Language>>,
 616    name_fallback: SharedString,
 617    cx: &App,
 618) -> AnyElement {
 619    let icon_path = language.and_then(|language| {
 620        language
 621            .config()
 622            .matcher
 623            .path_suffixes
 624            .iter()
 625            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 626            .map(Icon::from_path)
 627    });
 628
 629    let language_label = language
 630        .map(|language| language.name().into())
 631        .unwrap_or(name_fallback);
 632
 633    h_flex()
 634        .gap_1()
 635        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::Small)))
 636        .child(Label::new(language_label).size(LabelSize::Small))
 637        .into_any_element()
 638}
 639
 640fn open_markdown_link(
 641    text: SharedString,
 642    workspace: WeakEntity<Workspace>,
 643    window: &mut Window,
 644    cx: &mut App,
 645) {
 646    let Some(workspace) = workspace.upgrade() else {
 647        cx.open_url(&text);
 648        return;
 649    };
 650
 651    match MentionLink::try_parse(&text, &workspace, cx) {
 652        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 653            if entry.is_dir() {
 654                workspace.project().update(cx, |_, cx| {
 655                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 656                })
 657            } else {
 658                workspace
 659                    .open_path(path, None, true, window, cx)
 660                    .detach_and_log_err(cx);
 661            }
 662        }),
 663        Some(MentionLink::Symbol(path, symbol_name)) => {
 664            let open_task = workspace.update(cx, |workspace, cx| {
 665                workspace.open_path(path, None, true, window, cx)
 666            });
 667            window
 668                .spawn(cx, async move |cx| {
 669                    let active_editor = open_task
 670                        .await?
 671                        .downcast::<Editor>()
 672                        .context("Item is not an editor")?;
 673                    active_editor.update_in(cx, |editor, window, cx| {
 674                        let symbol_range = editor
 675                            .buffer()
 676                            .read(cx)
 677                            .snapshot(cx)
 678                            .outline(None)
 679                            .and_then(|outline| {
 680                                outline
 681                                    .find_most_similar(&symbol_name)
 682                                    .map(|(_, item)| item.range.clone())
 683                            })
 684                            .context("Could not find matching symbol")?;
 685
 686                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 687                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 688                        });
 689                        anyhow::Ok(())
 690                    })
 691                })
 692                .detach_and_log_err(cx);
 693        }
 694        Some(MentionLink::Selection(path, line_range)) => {
 695            let open_task = workspace.update(cx, |workspace, cx| {
 696                workspace.open_path(path, None, true, window, cx)
 697            });
 698            window
 699                .spawn(cx, async move |cx| {
 700                    let active_editor = open_task
 701                        .await?
 702                        .downcast::<Editor>()
 703                        .context("Item is not an editor")?;
 704                    active_editor.update_in(cx, |editor, window, cx| {
 705                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 706                            s.select_ranges([Point::new(line_range.start as u32, 0)
 707                                ..Point::new(line_range.start as u32, 0)])
 708                        });
 709                        anyhow::Ok(())
 710                    })
 711                })
 712                .detach_and_log_err(cx);
 713        }
 714        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 715            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 716                panel.update(cx, |panel, cx| {
 717                    panel
 718                        .open_thread_by_id(&thread_id, window, cx)
 719                        .detach_and_log_err(cx)
 720                });
 721            }
 722        }),
 723        Some(MentionLink::TextThread(path)) => workspace.update(cx, |workspace, cx| {
 724            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 725                panel.update(cx, |panel, cx| {
 726                    panel
 727                        .open_saved_prompt_editor(path, window, cx)
 728                        .detach_and_log_err(cx);
 729                });
 730            }
 731        }),
 732        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 733        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
 734            Box::new(OpenRulesLibrary {
 735                prompt_to_select: Some(prompt_id.0),
 736            }),
 737            cx,
 738        ),
 739        None => cx.open_url(&text),
 740    }
 741}
 742
 743struct EditingMessageState {
 744    editor: Entity<Editor>,
 745    context_strip: Entity<ContextStrip>,
 746    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 747    last_estimated_token_count: Option<usize>,
 748    _subscriptions: [Subscription; 2],
 749    _update_token_count_task: Option<Task<()>>,
 750}
 751
 752impl ActiveThread {
 753    pub fn new(
 754        thread: Entity<Thread>,
 755        thread_store: Entity<ThreadStore>,
 756        text_thread_store: Entity<TextThreadStore>,
 757        context_store: Entity<ContextStore>,
 758        language_registry: Arc<LanguageRegistry>,
 759        workspace: WeakEntity<Workspace>,
 760        window: &mut Window,
 761        cx: &mut Context<Self>,
 762    ) -> Self {
 763        let subscriptions = vec![
 764            cx.observe(&thread, |_, _, cx| cx.notify()),
 765            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 766            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 767        ];
 768
 769        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 770            let this = cx.entity().downgrade();
 771            move |ix, window: &mut Window, cx: &mut App| {
 772                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 773                    .unwrap()
 774            }
 775        });
 776        let mut this = Self {
 777            language_registry,
 778            thread_store,
 779            text_thread_store,
 780            context_store,
 781            thread: thread.clone(),
 782            workspace,
 783            save_thread_task: None,
 784            messages: Vec::new(),
 785            rendered_messages_by_id: HashMap::default(),
 786            rendered_tool_uses: HashMap::default(),
 787            expanded_tool_uses: HashMap::default(),
 788            expanded_thinking_segments: HashMap::default(),
 789            expanded_code_blocks: HashMap::default(),
 790            list_state: list_state.clone(),
 791            scrollbar_state: ScrollbarState::new(list_state),
 792            show_scrollbar: false,
 793            hide_scrollbar_task: None,
 794            editing_message: None,
 795            last_error: None,
 796            copied_code_block_ids: HashSet::default(),
 797            notifications: Vec::new(),
 798            _subscriptions: subscriptions,
 799            notification_subscriptions: HashMap::default(),
 800            open_feedback_editors: HashMap::default(),
 801            _load_edited_message_context_task: None,
 802        };
 803
 804        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 805            this.push_message(&message.id, &message.segments, window, cx);
 806
 807            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 808                this.render_tool_use_markdown(
 809                    tool_use.id.clone(),
 810                    tool_use.ui_text.clone(),
 811                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 812                    tool_use.status.text(),
 813                    cx,
 814                );
 815            }
 816        }
 817
 818        this
 819    }
 820
 821    pub fn thread(&self) -> &Entity<Thread> {
 822        &self.thread
 823    }
 824
 825    pub fn is_empty(&self) -> bool {
 826        self.messages.is_empty()
 827    }
 828
 829    pub fn summary(&self, cx: &App) -> Option<SharedString> {
 830        self.thread.read(cx).summary()
 831    }
 832
 833    pub fn summary_or_default(&self, cx: &App) -> SharedString {
 834        self.thread.read(cx).summary_or_default()
 835    }
 836
 837    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 838        self.last_error.take();
 839        self.thread.update(cx, |thread, cx| {
 840            thread.cancel_last_completion(Some(window.window_handle()), cx)
 841        })
 842    }
 843
 844    pub fn last_error(&self) -> Option<ThreadError> {
 845        self.last_error.clone()
 846    }
 847
 848    pub fn clear_last_error(&mut self) {
 849        self.last_error.take();
 850    }
 851
 852    /// Returns the editing message id and the estimated token count in the content
 853    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
 854        self.editing_message
 855            .as_ref()
 856            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 857    }
 858
 859    pub fn thread_store(&self) -> &Entity<ThreadStore> {
 860        &self.thread_store
 861    }
 862
 863    pub fn text_thread_store(&self) -> &Entity<TextThreadStore> {
 864        &self.text_thread_store
 865    }
 866
 867    fn push_message(
 868        &mut self,
 869        id: &MessageId,
 870        segments: &[MessageSegment],
 871        _window: &mut Window,
 872        cx: &mut Context<Self>,
 873    ) {
 874        let old_len = self.messages.len();
 875        self.messages.push(*id);
 876        self.list_state.splice(old_len..old_len, 1);
 877
 878        let rendered_message =
 879            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 880        self.rendered_messages_by_id.insert(*id, rendered_message);
 881    }
 882
 883    fn edited_message(
 884        &mut self,
 885        id: &MessageId,
 886        segments: &[MessageSegment],
 887        _window: &mut Window,
 888        cx: &mut Context<Self>,
 889    ) {
 890        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 891            return;
 892        };
 893        self.list_state.splice(index..index + 1, 1);
 894        let rendered_message =
 895            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 896        self.rendered_messages_by_id.insert(*id, rendered_message);
 897    }
 898
 899    fn deleted_message(&mut self, id: &MessageId) {
 900        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 901            return;
 902        };
 903        self.messages.remove(index);
 904        self.list_state.splice(index..index + 1, 0);
 905        self.rendered_messages_by_id.remove(id);
 906    }
 907
 908    fn render_tool_use_markdown(
 909        &mut self,
 910        tool_use_id: LanguageModelToolUseId,
 911        tool_label: impl Into<SharedString>,
 912        tool_input: &str,
 913        tool_output: SharedString,
 914        cx: &mut Context<Self>,
 915    ) {
 916        let rendered = self
 917            .rendered_tool_uses
 918            .entry(tool_use_id.clone())
 919            .or_insert_with(|| RenderedToolUse {
 920                label: cx.new(|cx| {
 921                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 922                }),
 923                input: cx.new(|cx| {
 924                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 925                }),
 926                output: cx.new(|cx| {
 927                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 928                }),
 929            });
 930
 931        rendered.label.update(cx, |this, cx| {
 932            this.replace(tool_label, cx);
 933        });
 934        rendered.input.update(cx, |this, cx| {
 935            this.replace(
 936                MarkdownCodeBlock {
 937                    tag: "json",
 938                    text: tool_input,
 939                }
 940                .to_string(),
 941                cx,
 942            );
 943        });
 944        rendered.output.update(cx, |this, cx| {
 945            this.replace(tool_output, cx);
 946        });
 947    }
 948
 949    fn handle_thread_event(
 950        &mut self,
 951        _thread: &Entity<Thread>,
 952        event: &ThreadEvent,
 953        window: &mut Window,
 954        cx: &mut Context<Self>,
 955    ) {
 956        match event {
 957            ThreadEvent::CancelEditing => {
 958                if self.editing_message.is_some() {
 959                    self.cancel_editing_message(&menu::Cancel, window, cx);
 960                }
 961            }
 962            ThreadEvent::ShowError(error) => {
 963                self.last_error = Some(error.clone());
 964            }
 965            ThreadEvent::NewRequest | ThreadEvent::CompletionCanceled => {
 966                cx.notify();
 967            }
 968            ThreadEvent::StreamedCompletion
 969            | ThreadEvent::SummaryGenerated
 970            | ThreadEvent::SummaryChanged => {
 971                self.save_thread(cx);
 972            }
 973            ThreadEvent::Stopped(reason) => match reason {
 974                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 975                    let thread = self.thread.read(cx);
 976                    self.show_notification(
 977                        if thread.used_tools_since_last_user_message() {
 978                            "Finished running tools"
 979                        } else {
 980                            "New message"
 981                        },
 982                        IconName::ZedAssistant,
 983                        window,
 984                        cx,
 985                    );
 986                }
 987                _ => {}
 988            },
 989            ThreadEvent::ToolConfirmationNeeded => {
 990                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 991            }
 992            ThreadEvent::StreamedAssistantText(message_id, text) => {
 993                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 994                    rendered_message.append_text(text, cx);
 995                }
 996            }
 997            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
 998                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 999                    rendered_message.append_thinking(text, cx);
1000                }
1001            }
1002            ThreadEvent::MessageAdded(message_id) => {
1003                if let Some(message_segments) = self
1004                    .thread
1005                    .read(cx)
1006                    .message(*message_id)
1007                    .map(|message| message.segments.clone())
1008                {
1009                    self.push_message(message_id, &message_segments, window, cx);
1010                }
1011
1012                self.save_thread(cx);
1013                cx.notify();
1014            }
1015            ThreadEvent::MessageEdited(message_id) => {
1016                if let Some(message_segments) = self
1017                    .thread
1018                    .read(cx)
1019                    .message(*message_id)
1020                    .map(|message| message.segments.clone())
1021                {
1022                    self.edited_message(message_id, &message_segments, window, cx);
1023                }
1024
1025                self.save_thread(cx);
1026                cx.notify();
1027            }
1028            ThreadEvent::MessageDeleted(message_id) => {
1029                self.deleted_message(message_id);
1030                self.save_thread(cx);
1031                cx.notify();
1032            }
1033            ThreadEvent::UsePendingTools { tool_uses } => {
1034                for tool_use in tool_uses {
1035                    self.render_tool_use_markdown(
1036                        tool_use.id.clone(),
1037                        tool_use.ui_text.clone(),
1038                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1039                        "".into(),
1040                        cx,
1041                    );
1042                }
1043            }
1044            ThreadEvent::StreamedToolUse {
1045                tool_use_id,
1046                ui_text,
1047                input,
1048            } => {
1049                self.render_tool_use_markdown(
1050                    tool_use_id.clone(),
1051                    ui_text.clone(),
1052                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1053                    "".into(),
1054                    cx,
1055                );
1056            }
1057            ThreadEvent::ToolFinished {
1058                pending_tool_use, ..
1059            } => {
1060                if let Some(tool_use) = pending_tool_use {
1061                    self.render_tool_use_markdown(
1062                        tool_use.id.clone(),
1063                        tool_use.ui_text.clone(),
1064                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
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            ThreadEvent::CheckpointChanged => cx.notify(),
1075            ThreadEvent::ReceivedTextChunk => {}
1076            ThreadEvent::InvalidToolInput {
1077                tool_use_id,
1078                ui_text,
1079                invalid_input_json,
1080            } => {
1081                self.render_tool_use_markdown(
1082                    tool_use_id.clone(),
1083                    ui_text,
1084                    invalid_input_json,
1085                    self.thread
1086                        .read(cx)
1087                        .output_for_tool(tool_use_id)
1088                        .map(|output| output.clone().into())
1089                        .unwrap_or("".into()),
1090                    cx,
1091                );
1092            }
1093            ThreadEvent::MissingToolUse {
1094                tool_use_id,
1095                ui_text,
1096            } => {
1097                self.render_tool_use_markdown(
1098                    tool_use_id.clone(),
1099                    ui_text,
1100                    "",
1101                    self.thread
1102                        .read(cx)
1103                        .output_for_tool(tool_use_id)
1104                        .map(|output| output.clone().into())
1105                        .unwrap_or("".into()),
1106                    cx,
1107                );
1108            }
1109        }
1110    }
1111
1112    fn handle_rules_loading_error(
1113        &mut self,
1114        _thread_store: Entity<ThreadStore>,
1115        error: &RulesLoadingError,
1116        cx: &mut Context<Self>,
1117    ) {
1118        self.last_error = Some(ThreadError::Message {
1119            header: "Error loading rules file".into(),
1120            message: error.message.clone(),
1121        });
1122        cx.notify();
1123    }
1124
1125    fn show_notification(
1126        &mut self,
1127        caption: impl Into<SharedString>,
1128        icon: IconName,
1129        window: &mut Window,
1130        cx: &mut Context<ActiveThread>,
1131    ) {
1132        if window.is_window_active() || !self.notifications.is_empty() {
1133            return;
1134        }
1135
1136        let title = self
1137            .thread
1138            .read(cx)
1139            .summary()
1140            .unwrap_or("Agent Panel".into());
1141
1142        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1143            NotifyWhenAgentWaiting::PrimaryScreen => {
1144                if let Some(primary) = cx.primary_display() {
1145                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1146                }
1147            }
1148            NotifyWhenAgentWaiting::AllScreens => {
1149                let caption = caption.into();
1150                for screen in cx.displays() {
1151                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1152                }
1153            }
1154            NotifyWhenAgentWaiting::Never => {
1155                // Don't show anything
1156            }
1157        }
1158    }
1159
1160    fn pop_up(
1161        &mut self,
1162        icon: IconName,
1163        caption: SharedString,
1164        title: SharedString,
1165        window: &mut Window,
1166        screen: Rc<dyn PlatformDisplay>,
1167        cx: &mut Context<'_, ActiveThread>,
1168    ) {
1169        let options = AgentNotification::window_options(screen, cx);
1170
1171        let project_name = self.workspace.upgrade().and_then(|workspace| {
1172            workspace
1173                .read(cx)
1174                .project()
1175                .read(cx)
1176                .visible_worktrees(cx)
1177                .next()
1178                .map(|worktree| worktree.read(cx).root_name().to_string())
1179        });
1180
1181        if let Some(screen_window) = cx
1182            .open_window(options, |_, cx| {
1183                cx.new(|_| {
1184                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1185                })
1186            })
1187            .log_err()
1188        {
1189            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1190                self.notification_subscriptions
1191                    .entry(screen_window)
1192                    .or_insert_with(Vec::new)
1193                    .push(cx.subscribe_in(&pop_up, window, {
1194                        |this, _, event, window, cx| match event {
1195                            AgentNotificationEvent::Accepted => {
1196                                let handle = window.window_handle();
1197                                cx.activate(true);
1198
1199                                let workspace_handle = this.workspace.clone();
1200
1201                                // If there are multiple Zed windows, activate the correct one.
1202                                cx.defer(move |cx| {
1203                                    handle
1204                                        .update(cx, |_view, window, _cx| {
1205                                            window.activate_window();
1206
1207                                            if let Some(workspace) = workspace_handle.upgrade() {
1208                                                workspace.update(_cx, |workspace, cx| {
1209                                                    workspace
1210                                                        .focus_panel::<AssistantPanel>(window, cx);
1211                                                });
1212                                            }
1213                                        })
1214                                        .log_err();
1215                                });
1216
1217                                this.dismiss_notifications(cx);
1218                            }
1219                            AgentNotificationEvent::Dismissed => {
1220                                this.dismiss_notifications(cx);
1221                            }
1222                        }
1223                    }));
1224
1225                self.notifications.push(screen_window);
1226
1227                // If the user manually refocuses the original window, dismiss the popup.
1228                self.notification_subscriptions
1229                    .entry(screen_window)
1230                    .or_insert_with(Vec::new)
1231                    .push({
1232                        let pop_up_weak = pop_up.downgrade();
1233
1234                        cx.observe_window_activation(window, move |_, window, cx| {
1235                            if window.is_window_active() {
1236                                if let Some(pop_up) = pop_up_weak.upgrade() {
1237                                    pop_up.update(cx, |_, cx| {
1238                                        cx.emit(AgentNotificationEvent::Dismissed);
1239                                    });
1240                                }
1241                            }
1242                        })
1243                    });
1244            }
1245        }
1246    }
1247
1248    /// Spawns a task to save the active thread.
1249    ///
1250    /// Only one task to save the thread will be in flight at a time.
1251    fn save_thread(&mut self, cx: &mut Context<Self>) {
1252        let thread = self.thread.clone();
1253        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1254            let task = this
1255                .update(cx, |this, cx| {
1256                    this.thread_store
1257                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1258                })
1259                .ok();
1260
1261            if let Some(task) = task {
1262                task.await.log_err();
1263            }
1264        }));
1265    }
1266
1267    fn start_editing_message(
1268        &mut self,
1269        message_id: MessageId,
1270        message_segments: &[MessageSegment],
1271        window: &mut Window,
1272        cx: &mut Context<Self>,
1273    ) {
1274        // User message should always consist of a single text segment,
1275        // therefore we can skip returning early if it's not a text segment.
1276        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1277            return;
1278        };
1279
1280        // Cancel any ongoing streaming when user starts editing a previous message
1281        self.cancel_last_completion(window, cx);
1282
1283        let editor = crate::message_editor::create_editor(
1284            self.workspace.clone(),
1285            self.context_store.downgrade(),
1286            self.thread_store.downgrade(),
1287            self.text_thread_store.downgrade(),
1288            window,
1289            cx,
1290        );
1291        editor.update(cx, |editor, cx| {
1292            editor.set_text(message_text.clone(), window, cx);
1293            editor.focus_handle(cx).focus(window);
1294            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1295        });
1296        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1297            EditorEvent::BufferEdited => {
1298                this.update_editing_message_token_count(true, cx);
1299            }
1300            _ => {}
1301        });
1302
1303        let context_picker_menu_handle = PopoverMenuHandle::default();
1304        let context_strip = cx.new(|cx| {
1305            ContextStrip::new(
1306                self.context_store.clone(),
1307                self.workspace.clone(),
1308                Some(self.thread_store.downgrade()),
1309                Some(self.text_thread_store.downgrade()),
1310                context_picker_menu_handle.clone(),
1311                SuggestContextKind::File,
1312                window,
1313                cx,
1314            )
1315        });
1316
1317        let context_strip_subscription =
1318            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1319
1320        self.editing_message = Some((
1321            message_id,
1322            EditingMessageState {
1323                editor: editor.clone(),
1324                context_strip,
1325                context_picker_menu_handle,
1326                last_estimated_token_count: None,
1327                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1328                _update_token_count_task: None,
1329            },
1330        ));
1331        self.update_editing_message_token_count(false, cx);
1332        cx.notify();
1333    }
1334
1335    fn handle_context_strip_event(
1336        &mut self,
1337        _context_strip: &Entity<ContextStrip>,
1338        event: &ContextStripEvent,
1339        window: &mut Window,
1340        cx: &mut Context<Self>,
1341    ) {
1342        if let Some((_, state)) = self.editing_message.as_ref() {
1343            match event {
1344                ContextStripEvent::PickerDismissed
1345                | ContextStripEvent::BlurredEmpty
1346                | ContextStripEvent::BlurredDown => {
1347                    let editor_focus_handle = state.editor.focus_handle(cx);
1348                    window.focus(&editor_focus_handle);
1349                }
1350                ContextStripEvent::BlurredUp => {}
1351            }
1352        }
1353    }
1354
1355    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1356        let Some((message_id, state)) = self.editing_message.as_mut() else {
1357            return;
1358        };
1359
1360        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1361        state._update_token_count_task.take();
1362
1363        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1364            state.last_estimated_token_count.take();
1365            return;
1366        };
1367
1368        let editor = state.editor.clone();
1369        let thread = self.thread.clone();
1370        let message_id = *message_id;
1371
1372        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1373            if debounce {
1374                cx.background_executor()
1375                    .timer(Duration::from_millis(200))
1376                    .await;
1377            }
1378
1379            let token_count = if let Some(task) = cx
1380                .update(|cx| {
1381                    let Some(message) = thread.read(cx).message(message_id) else {
1382                        log::error!("Message that was being edited no longer exists");
1383                        return None;
1384                    };
1385                    let message_text = editor.read(cx).text(cx);
1386
1387                    if message_text.is_empty() && message.loaded_context.is_empty() {
1388                        return None;
1389                    }
1390
1391                    let mut request_message = LanguageModelRequestMessage {
1392                        role: language_model::Role::User,
1393                        content: Vec::new(),
1394                        cache: false,
1395                    };
1396
1397                    message
1398                        .loaded_context
1399                        .add_to_request_message(&mut request_message);
1400
1401                    if !message_text.is_empty() {
1402                        request_message
1403                            .content
1404                            .push(MessageContent::Text(message_text));
1405                    }
1406
1407                    let request = language_model::LanguageModelRequest {
1408                        thread_id: None,
1409                        prompt_id: None,
1410                        mode: None,
1411                        messages: vec![request_message],
1412                        tools: vec![],
1413                        stop: vec![],
1414                        temperature: None,
1415                    };
1416
1417                    Some(configured_model.model.count_tokens(request, cx))
1418                })
1419                .ok()
1420                .flatten()
1421            {
1422                task.await.log_err()
1423            } else {
1424                Some(0)
1425            };
1426
1427            if let Some(token_count) = token_count {
1428                this.update(cx, |this, cx| {
1429                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1430                        return;
1431                    };
1432
1433                    state.last_estimated_token_count = Some(token_count);
1434                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1435                })
1436                .ok();
1437            };
1438        }));
1439    }
1440
1441    fn toggle_context_picker(
1442        &mut self,
1443        _: &crate::ToggleContextPicker,
1444        window: &mut Window,
1445        cx: &mut Context<Self>,
1446    ) {
1447        if let Some((_, state)) = self.editing_message.as_mut() {
1448            let handle = state.context_picker_menu_handle.clone();
1449            window.defer(cx, move |window, cx| {
1450                handle.toggle(window, cx);
1451            });
1452        }
1453    }
1454
1455    fn remove_all_context(
1456        &mut self,
1457        _: &crate::RemoveAllContext,
1458        _window: &mut Window,
1459        cx: &mut Context<Self>,
1460    ) {
1461        self.context_store.update(cx, |store, _cx| store.clear());
1462        cx.notify();
1463    }
1464
1465    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1466        if let Some((_, state)) = self.editing_message.as_mut() {
1467            if state.context_picker_menu_handle.is_deployed() {
1468                cx.propagate();
1469            } else {
1470                state.context_strip.focus_handle(cx).focus(window);
1471            }
1472        }
1473    }
1474
1475    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1476        let images = cx
1477            .read_from_clipboard()
1478            .map(|item| {
1479                item.into_entries()
1480                    .filter_map(|entry| {
1481                        if let ClipboardEntry::Image(image) = entry {
1482                            Some(image)
1483                        } else {
1484                            None
1485                        }
1486                    })
1487                    .collect::<Vec<_>>()
1488            })
1489            .unwrap_or_default();
1490
1491        if images.is_empty() {
1492            return;
1493        }
1494        cx.stop_propagation();
1495
1496        self.context_store.update(cx, |store, cx| {
1497            for image in images {
1498                store.add_image_instance(Arc::new(image), cx);
1499            }
1500        });
1501    }
1502
1503    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1504        self.editing_message.take();
1505        cx.notify();
1506    }
1507
1508    fn confirm_editing_message(
1509        &mut self,
1510        _: &menu::Confirm,
1511        window: &mut Window,
1512        cx: &mut Context<Self>,
1513    ) {
1514        let Some((message_id, state)) = self.editing_message.take() else {
1515            return;
1516        };
1517
1518        let Some(model) = self
1519            .thread
1520            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1521        else {
1522            return;
1523        };
1524
1525        if model.provider.must_accept_terms(cx) {
1526            cx.notify();
1527            return;
1528        }
1529
1530        let edited_text = state.editor.read(cx).text(cx);
1531
1532        let new_context = self
1533            .context_store
1534            .read(cx)
1535            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1536
1537        let project = self.thread.read(cx).project().clone();
1538        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1539
1540        let load_context_task =
1541            crate::context::load_context(new_context, &project, &prompt_store, cx);
1542        self._load_edited_message_context_task =
1543            Some(cx.spawn_in(window, async move |this, cx| {
1544                let context = load_context_task.await;
1545                let _ = this
1546                    .update_in(cx, |this, window, cx| {
1547                        this.thread.update(cx, |thread, cx| {
1548                            thread.edit_message(
1549                                message_id,
1550                                Role::User,
1551                                vec![MessageSegment::Text(edited_text)],
1552                                Some(context.loaded_context),
1553                                cx,
1554                            );
1555                            for message_id in this.messages_after(message_id) {
1556                                thread.delete_message(*message_id, cx);
1557                            }
1558                        });
1559
1560                        this.thread.update(cx, |thread, cx| {
1561                            thread.advance_prompt_id();
1562                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1563                        });
1564                        this._load_edited_message_context_task = None;
1565                        cx.notify();
1566                    })
1567                    .log_err();
1568            }));
1569    }
1570
1571    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1572        self.messages
1573            .iter()
1574            .position(|id| *id == message_id)
1575            .map(|index| &self.messages[index + 1..])
1576            .unwrap_or(&[])
1577    }
1578
1579    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1580        self.cancel_editing_message(&menu::Cancel, window, cx);
1581    }
1582
1583    fn handle_regenerate_click(
1584        &mut self,
1585        _: &ClickEvent,
1586        window: &mut Window,
1587        cx: &mut Context<Self>,
1588    ) {
1589        self.confirm_editing_message(&menu::Confirm, window, cx);
1590    }
1591
1592    fn handle_feedback_click(
1593        &mut self,
1594        message_id: MessageId,
1595        feedback: ThreadFeedback,
1596        window: &mut Window,
1597        cx: &mut Context<Self>,
1598    ) {
1599        let report = self.thread.update(cx, |thread, cx| {
1600            thread.report_message_feedback(message_id, feedback, cx)
1601        });
1602
1603        cx.spawn(async move |this, cx| {
1604            report.await?;
1605            this.update(cx, |_this, cx| cx.notify())
1606        })
1607        .detach_and_log_err(cx);
1608
1609        match feedback {
1610            ThreadFeedback::Positive => {
1611                self.open_feedback_editors.remove(&message_id);
1612            }
1613            ThreadFeedback::Negative => {
1614                self.handle_show_feedback_comments(message_id, window, cx);
1615            }
1616        }
1617    }
1618
1619    fn handle_show_feedback_comments(
1620        &mut self,
1621        message_id: MessageId,
1622        window: &mut Window,
1623        cx: &mut Context<Self>,
1624    ) {
1625        let buffer = cx.new(|cx| {
1626            let empty_string = String::new();
1627            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1628        });
1629
1630        let editor = cx.new(|cx| {
1631            let mut editor = Editor::new(
1632                editor::EditorMode::AutoHeight { max_lines: 4 },
1633                buffer,
1634                None,
1635                window,
1636                cx,
1637            );
1638            editor.set_placeholder_text(
1639                "What went wrong? Share your feedback so we can improve.",
1640                cx,
1641            );
1642            editor
1643        });
1644
1645        editor.read(cx).focus_handle(cx).focus(window);
1646        self.open_feedback_editors.insert(message_id, editor);
1647        cx.notify();
1648    }
1649
1650    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1651        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1652            return;
1653        };
1654
1655        let report_task = self.thread.update(cx, |thread, cx| {
1656            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1657        });
1658
1659        let comments = editor.read(cx).text(cx);
1660        if !comments.is_empty() {
1661            let thread_id = self.thread.read(cx).id().clone();
1662            let comments_value = String::from(comments.as_str());
1663
1664            let message_content = self
1665                .thread
1666                .read(cx)
1667                .message(message_id)
1668                .map(|msg| msg.to_string())
1669                .unwrap_or_default();
1670
1671            telemetry::event!(
1672                "Assistant Thread Feedback Comments",
1673                thread_id,
1674                message_id = message_id.0,
1675                message_content,
1676                comments = comments_value
1677            );
1678
1679            self.open_feedback_editors.remove(&message_id);
1680
1681            cx.spawn(async move |this, cx| {
1682                report_task.await?;
1683                this.update(cx, |_this, cx| cx.notify())
1684            })
1685            .detach_and_log_err(cx);
1686        }
1687    }
1688
1689    fn render_edit_message_editor(
1690        &self,
1691        state: &EditingMessageState,
1692        window: &mut Window,
1693        cx: &Context<Self>,
1694    ) -> impl IntoElement {
1695        let settings = ThemeSettings::get_global(cx);
1696        let font_size = TextSize::Small.rems(cx);
1697        let line_height = font_size.to_pixels(window.rem_size()) * 1.75;
1698
1699        let colors = cx.theme().colors();
1700
1701        let text_style = TextStyle {
1702            color: colors.text,
1703            font_family: settings.buffer_font.family.clone(),
1704            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1705            font_features: settings.buffer_font.features.clone(),
1706            font_size: font_size.into(),
1707            line_height: line_height.into(),
1708            ..Default::default()
1709        };
1710
1711        v_flex()
1712            .key_context("EditMessageEditor")
1713            .on_action(cx.listener(Self::toggle_context_picker))
1714            .on_action(cx.listener(Self::remove_all_context))
1715            .on_action(cx.listener(Self::move_up))
1716            .on_action(cx.listener(Self::cancel_editing_message))
1717            .on_action(cx.listener(Self::confirm_editing_message))
1718            .capture_action(cx.listener(Self::paste))
1719            .min_h_6()
1720            .flex_grow()
1721            .w_full()
1722            .gap_2()
1723            .child(EditorElement::new(
1724                &state.editor,
1725                EditorStyle {
1726                    background: colors.editor_background,
1727                    local_player: cx.theme().players().local(),
1728                    text: text_style,
1729                    syntax: cx.theme().syntax().clone(),
1730                    ..Default::default()
1731                },
1732            ))
1733            .child(state.context_strip.clone())
1734    }
1735
1736    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1737        let message_id = self.messages[ix];
1738        let Some(message) = self.thread.read(cx).message(message_id) else {
1739            return Empty.into_any();
1740        };
1741
1742        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1743            return Empty.into_any();
1744        };
1745
1746        let workspace = self.workspace.clone();
1747        let thread = self.thread.read(cx);
1748
1749        // Get all the data we need from thread before we start using it in closures
1750        let checkpoint = thread.checkpoint_for_message(message_id);
1751        let added_context = thread
1752            .context_for_message(message_id)
1753            .map(|context| AddedContext::new_attached(context, cx))
1754            .collect::<Vec<_>>();
1755
1756        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1757        let has_tool_uses = !tool_uses.is_empty();
1758        let is_generating = thread.is_generating();
1759        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1760
1761        let is_first_message = ix == 0;
1762        let is_last_message = ix == self.messages.len() - 1;
1763
1764        let loading_dots = (is_generating_stale && is_last_message)
1765            .then(|| AnimatedLabel::new("").size(LabelSize::Small));
1766
1767        let editing_message_state = self
1768            .editing_message
1769            .as_ref()
1770            .filter(|(id, _)| *id == message_id)
1771            .map(|(_, state)| state);
1772
1773        let colors = cx.theme().colors();
1774        let editor_bg_color = colors.editor_background;
1775
1776        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileCode)
1777            .shape(ui::IconButtonShape::Square)
1778            .icon_size(IconSize::XSmall)
1779            .icon_color(Color::Ignored)
1780            .tooltip(Tooltip::text("Open Thread as Markdown"))
1781            .on_click(|_, window, cx| {
1782                window.dispatch_action(Box::new(OpenActiveThreadAsMarkdown), cx)
1783            });
1784
1785        // For all items that should be aligned with the LLM's response.
1786        const RESPONSE_PADDING_X: Pixels = px(19.);
1787
1788        let show_feedback = thread.is_turn_end(ix);
1789
1790        let feedback_container = h_flex()
1791            .group("feedback_container")
1792            .mt_1()
1793            .py_2()
1794            .px(RESPONSE_PADDING_X)
1795            .gap_1()
1796            .flex_wrap()
1797            .justify_end();
1798        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1799            Some(feedback) => feedback_container
1800                .child(
1801                    div().mr_1().visible_on_hover("feedback_container").child(
1802                        Label::new(match feedback {
1803                            ThreadFeedback::Positive => "Thanks for your feedback!",
1804                            ThreadFeedback::Negative => {
1805                                "We appreciate your feedback and will use it to improve."
1806                            }
1807                        })
1808                    .color(Color::Muted)
1809                    .size(LabelSize::XSmall)
1810                    .truncate())
1811                )
1812                .child(
1813                    h_flex()
1814                        .pr_1()
1815                        .gap_1()
1816                        .child(
1817                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1818                                .shape(ui::IconButtonShape::Square)
1819                                .icon_size(IconSize::XSmall)
1820                                .icon_color(match feedback {
1821                                    ThreadFeedback::Positive => Color::Accent,
1822                                    ThreadFeedback::Negative => Color::Ignored,
1823                                })
1824                                .tooltip(Tooltip::text("Helpful Response"))
1825                                .on_click(cx.listener(move |this, _, window, cx| {
1826                                    this.handle_feedback_click(
1827                                        message_id,
1828                                        ThreadFeedback::Positive,
1829                                        window,
1830                                        cx,
1831                                    );
1832                                })),
1833                        )
1834                        .child(
1835                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1836                                .shape(ui::IconButtonShape::Square)
1837                                .icon_size(IconSize::XSmall)
1838                                .icon_color(match feedback {
1839                                    ThreadFeedback::Positive => Color::Ignored,
1840                                    ThreadFeedback::Negative => Color::Accent,
1841                                })
1842                                .tooltip(Tooltip::text("Not Helpful"))
1843                                .on_click(cx.listener(move |this, _, window, cx| {
1844                                    this.handle_feedback_click(
1845                                        message_id,
1846                                        ThreadFeedback::Negative,
1847                                        window,
1848                                        cx,
1849                                    );
1850                                })),
1851                        )
1852                        .child(open_as_markdown),
1853                )
1854                .into_any_element(),
1855            None => feedback_container
1856                .child(
1857                    div().mr_1().visible_on_hover("feedback_container").child(
1858                        Label::new(
1859                            "Rating the thread sends all of your current conversation to the Zed team.",
1860                        )
1861                        .color(Color::Muted)
1862                    .size(LabelSize::XSmall)
1863                    .truncate())
1864                )
1865                .child(
1866                    h_flex()
1867                        .pr_1()
1868                        .gap_1()
1869                        .child(
1870                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1871                                .icon_size(IconSize::XSmall)
1872                                .icon_color(Color::Ignored)
1873                                .shape(ui::IconButtonShape::Square)
1874                                .tooltip(Tooltip::text("Helpful Response"))
1875                                .on_click(cx.listener(move |this, _, window, cx| {
1876                                    this.handle_feedback_click(
1877                                        message_id,
1878                                        ThreadFeedback::Positive,
1879                                        window,
1880                                        cx,
1881                                    );
1882                                })),
1883                        )
1884                        .child(
1885                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1886                                .icon_size(IconSize::XSmall)
1887                                .icon_color(Color::Ignored)
1888                                .shape(ui::IconButtonShape::Square)
1889                                .tooltip(Tooltip::text("Not Helpful"))
1890                                .on_click(cx.listener(move |this, _, window, cx| {
1891                                    this.handle_feedback_click(
1892                                        message_id,
1893                                        ThreadFeedback::Negative,
1894                                        window,
1895                                        cx,
1896                                    );
1897                                })),
1898                        )
1899                        .child(open_as_markdown),
1900                )
1901                .into_any_element(),
1902        };
1903
1904        let message_is_empty = message.should_display_content();
1905        let has_content = !message_is_empty || !added_context.is_empty();
1906
1907        let message_content = has_content.then(|| {
1908            if let Some(state) = editing_message_state.as_ref() {
1909                self.render_edit_message_editor(state, window, cx)
1910                    .into_any_element()
1911            } else {
1912                v_flex()
1913                    .w_full()
1914                    .gap_1()
1915                    .when(!message_is_empty, |parent| {
1916                        parent.child(div().min_h_6().child(self.render_message_content(
1917                            message_id,
1918                            rendered_message,
1919                            has_tool_uses,
1920                            workspace.clone(),
1921                            window,
1922                            cx,
1923                        )))
1924                    })
1925                    .when(!added_context.is_empty(), |parent| {
1926                        parent.child(h_flex().flex_wrap().gap_1().children(
1927                            added_context.into_iter().map(|added_context| {
1928                                let context = added_context.handle.clone();
1929                                ContextPill::added(added_context, false, false, None).on_click(
1930                                    Rc::new(cx.listener({
1931                                        let workspace = workspace.clone();
1932                                        move |_, _, window, cx| {
1933                                            if let Some(workspace) = workspace.upgrade() {
1934                                                open_context(&context, workspace, window, cx);
1935                                                cx.notify();
1936                                            }
1937                                        }
1938                                    })),
1939                                )
1940                            }),
1941                        ))
1942                    })
1943                    .into_any_element()
1944            }
1945        });
1946
1947        let styled_message = match message.role {
1948            Role::User => v_flex()
1949                .id(("message-container", ix))
1950                .pt_2()
1951                .pl_2()
1952                .pr_2p5()
1953                .pb_4()
1954                .child(
1955                    v_flex()
1956                        .id(("user-message", ix))
1957                        .bg(editor_bg_color)
1958                        .rounded_lg()
1959                        .shadow_md()
1960                        .border_1()
1961                        .border_color(colors.border)
1962                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1963                        .cursor_pointer()
1964                        .child(
1965                            h_flex()
1966                                .p_2p5()
1967                                .gap_1()
1968                                .children(message_content)
1969                                .when_some(editing_message_state, |this, state| {
1970                                    let focus_handle = state.editor.focus_handle(cx).clone();
1971                                    this.w_full().justify_between().child(
1972                                        h_flex()
1973                                            .gap_0p5()
1974                                            .child(
1975                                                IconButton::new(
1976                                                    "cancel-edit-message",
1977                                                    IconName::Close,
1978                                                )
1979                                                .shape(ui::IconButtonShape::Square)
1980                                                .icon_color(Color::Error)
1981                                                .tooltip({
1982                                                    let focus_handle = focus_handle.clone();
1983                                                    move |window, cx| {
1984                                                        Tooltip::for_action_in(
1985                                                            "Cancel Edit",
1986                                                            &menu::Cancel,
1987                                                            &focus_handle,
1988                                                            window,
1989                                                            cx,
1990                                                        )
1991                                                    }
1992                                                })
1993                                                .on_click(cx.listener(Self::handle_cancel_click)),
1994                                            )
1995                                            .child(
1996                                                IconButton::new(
1997                                                    "confirm-edit-message",
1998                                                    IconName::Check,
1999                                                )
2000                                                .disabled(state.editor.read(cx).is_empty(cx))
2001                                                .shape(ui::IconButtonShape::Square)
2002                                                .icon_color(Color::Success)
2003                                                .tooltip({
2004                                                    let focus_handle = focus_handle.clone();
2005                                                    move |window, cx| {
2006                                                        Tooltip::for_action_in(
2007                                                            "Regenerate",
2008                                                            &menu::Confirm,
2009                                                            &focus_handle,
2010                                                            window,
2011                                                            cx,
2012                                                        )
2013                                                    }
2014                                                })
2015                                                .on_click(
2016                                                    cx.listener(Self::handle_regenerate_click),
2017                                                ),
2018                                            ),
2019                                    )
2020                                }),
2021                        )
2022                        .when(editing_message_state.is_none(), |this| {
2023                            this.tooltip(Tooltip::text("Click To Edit"))
2024                        })
2025                        .on_click(cx.listener({
2026                            let message_segments = message.segments.clone();
2027                            move |this, _, window, cx| {
2028                                this.start_editing_message(
2029                                    message_id,
2030                                    &message_segments,
2031                                    window,
2032                                    cx,
2033                                );
2034                            }
2035                        })),
2036                ),
2037            Role::Assistant => v_flex()
2038                .id(("message-container", ix))
2039                .px(RESPONSE_PADDING_X)
2040                .gap_2()
2041                .children(message_content)
2042                .when(has_tool_uses, |parent| {
2043                    parent.children(tool_uses.into_iter().map(|tool_use| {
2044                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2045                    }))
2046                }),
2047            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2048                v_flex()
2049                    .bg(colors.editor_background)
2050                    .rounded_sm()
2051                    .child(div().p_4().children(message_content)),
2052            ),
2053        };
2054
2055        let after_editing_message = self
2056            .editing_message
2057            .as_ref()
2058            .map_or(false, |(editing_message_id, _)| {
2059                message_id > *editing_message_id
2060            });
2061
2062        let panel_background = cx.theme().colors().panel_background;
2063
2064        v_flex()
2065            .w_full()
2066            .map(|parent| {
2067                if let Some(checkpoint) = checkpoint.filter(|_| is_generating) {
2068                    let mut is_pending = false;
2069                    let mut error = None;
2070                    if let Some(last_restore_checkpoint) =
2071                        self.thread.read(cx).last_restore_checkpoint()
2072                    {
2073                        if last_restore_checkpoint.message_id() == message_id {
2074                            match last_restore_checkpoint {
2075                                LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2076                                LastRestoreCheckpoint::Error { error: err, .. } => {
2077                                    error = Some(err.clone());
2078                                }
2079                            }
2080                        }
2081                    }
2082
2083                    let restore_checkpoint_button =
2084                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2085                            .icon(if error.is_some() {
2086                                IconName::XCircle
2087                            } else {
2088                                IconName::Undo
2089                            })
2090                            .icon_size(IconSize::XSmall)
2091                            .icon_position(IconPosition::Start)
2092                            .icon_color(if error.is_some() {
2093                                Some(Color::Error)
2094                            } else {
2095                                None
2096                            })
2097                            .label_size(LabelSize::XSmall)
2098                            .disabled(is_pending)
2099                            .on_click(cx.listener(move |this, _, _window, cx| {
2100                                this.thread.update(cx, |thread, cx| {
2101                                    thread
2102                                        .restore_checkpoint(checkpoint.clone(), cx)
2103                                        .detach_and_log_err(cx);
2104                                });
2105                            }));
2106
2107                    let restore_checkpoint_button = if is_pending {
2108                        restore_checkpoint_button
2109                            .with_animation(
2110                                ("pulsating-restore-checkpoint-button", ix),
2111                                Animation::new(Duration::from_secs(2))
2112                                    .repeat()
2113                                    .with_easing(pulsating_between(0.6, 1.)),
2114                                |label, delta| label.alpha(delta),
2115                            )
2116                            .into_any_element()
2117                    } else if let Some(error) = error {
2118                        restore_checkpoint_button
2119                            .tooltip(Tooltip::text(error.to_string()))
2120                            .into_any_element()
2121                    } else {
2122                        restore_checkpoint_button.into_any_element()
2123                    };
2124
2125                    parent.child(
2126                        h_flex()
2127                            .pt_2p5()
2128                            .px_2p5()
2129                            .w_full()
2130                            .gap_1()
2131                            .child(ui::Divider::horizontal())
2132                            .child(restore_checkpoint_button)
2133                            .child(ui::Divider::horizontal()),
2134                    )
2135                } else {
2136                    parent
2137                }
2138            })
2139            .when(is_first_message, |parent| {
2140                parent.child(self.render_rules_item(cx))
2141            })
2142            .child(styled_message)
2143            .when(is_generating && is_last_message, |this| {
2144                this.child(
2145                    h_flex()
2146                        .h_8()
2147                        .mt_2()
2148                        .mb_4()
2149                        .ml_4()
2150                        .py_1p5()
2151                        .when_some(loading_dots, |this, loading_dots| this.child(loading_dots)),
2152                )
2153            })
2154            .when(show_feedback, move |parent| {
2155                parent.child(feedback_items).when_some(
2156                    self.open_feedback_editors.get(&message_id),
2157                    move |parent, feedback_editor| {
2158                        let focus_handle = feedback_editor.focus_handle(cx);
2159                        parent.child(
2160                            v_flex()
2161                                .key_context("AgentFeedbackMessageEditor")
2162                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2163                                    this.open_feedback_editors.remove(&message_id);
2164                                    cx.notify();
2165                                }))
2166                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2167                                    this.submit_feedback_message(message_id, cx);
2168                                    cx.notify();
2169                                }))
2170                                .on_action(cx.listener(Self::confirm_editing_message))
2171                                .mb_2()
2172                                .mx_4()
2173                                .p_2()
2174                                .rounded_md()
2175                                .border_1()
2176                                .border_color(cx.theme().colors().border)
2177                                .bg(cx.theme().colors().editor_background)
2178                                .child(feedback_editor.clone())
2179                                .child(
2180                                    h_flex()
2181                                        .gap_1()
2182                                        .justify_end()
2183                                        .child(
2184                                            Button::new("dismiss-feedback-message", "Cancel")
2185                                                .label_size(LabelSize::Small)
2186                                                .key_binding(
2187                                                    KeyBinding::for_action_in(
2188                                                        &menu::Cancel,
2189                                                        &focus_handle,
2190                                                        window,
2191                                                        cx,
2192                                                    )
2193                                                    .map(|kb| kb.size(rems_from_px(10.))),
2194                                                )
2195                                                .on_click(cx.listener(
2196                                                    move |this, _, _window, cx| {
2197                                                        this.open_feedback_editors
2198                                                            .remove(&message_id);
2199                                                        cx.notify();
2200                                                    },
2201                                                )),
2202                                        )
2203                                        .child(
2204                                            Button::new(
2205                                                "submit-feedback-message",
2206                                                "Share Feedback",
2207                                            )
2208                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2209                                            .label_size(LabelSize::Small)
2210                                            .key_binding(
2211                                                KeyBinding::for_action_in(
2212                                                    &menu::Confirm,
2213                                                    &focus_handle,
2214                                                    window,
2215                                                    cx,
2216                                                )
2217                                                .map(|kb| kb.size(rems_from_px(10.))),
2218                                            )
2219                                            .on_click(
2220                                                cx.listener(move |this, _, _window, cx| {
2221                                                    this.submit_feedback_message(message_id, cx);
2222                                                    cx.notify()
2223                                                }),
2224                                            ),
2225                                        ),
2226                                ),
2227                        )
2228                    },
2229                )
2230            })
2231            .when(after_editing_message, |parent| {
2232                // Backdrop to dim out the whole thread below the editing user message
2233                parent.relative().child(
2234                    div()
2235                        .occlude()
2236                        .absolute()
2237                        .inset_0()
2238                        .size_full()
2239                        .bg(panel_background)
2240                        .opacity(0.8),
2241                )
2242            })
2243            .into_any()
2244    }
2245
2246    fn render_message_content(
2247        &self,
2248        message_id: MessageId,
2249        rendered_message: &RenderedMessage,
2250        has_tool_uses: bool,
2251        workspace: WeakEntity<Workspace>,
2252        window: &Window,
2253        cx: &Context<Self>,
2254    ) -> impl IntoElement {
2255        let is_last_message = self.messages.last() == Some(&message_id);
2256        let is_generating = self.thread.read(cx).is_generating();
2257        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2258            rendered_message
2259                .segments
2260                .iter()
2261                .enumerate()
2262                .next_back()
2263                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2264                .map(|(index, _)| index)
2265        } else {
2266            None
2267        };
2268
2269        let message_role = self
2270            .thread
2271            .read(cx)
2272            .message(message_id)
2273            .map(|m| m.role)
2274            .unwrap_or(Role::User);
2275
2276        let is_assistant_message = message_role == Role::Assistant;
2277        let is_user_message = message_role == Role::User;
2278
2279        v_flex()
2280            .text_ui(cx)
2281            .gap_2()
2282            .when(is_user_message, |this| this.text_xs())
2283            .children(
2284                rendered_message.segments.iter().enumerate().map(
2285                    |(index, segment)| match segment {
2286                        RenderedMessageSegment::Thinking {
2287                            content,
2288                            scroll_handle,
2289                        } => self
2290                            .render_message_thinking_segment(
2291                                message_id,
2292                                index,
2293                                content.clone(),
2294                                &scroll_handle,
2295                                Some(index) == pending_thinking_segment_index,
2296                                window,
2297                                cx,
2298                            )
2299                            .into_any_element(),
2300                        RenderedMessageSegment::Text(markdown) => {
2301                            let markdown_element = MarkdownElement::new(
2302                                markdown.clone(),
2303                                if is_user_message {
2304                                    let mut style = default_markdown_style(window, cx);
2305                                    let mut text_style = window.text_style();
2306                                    let theme_settings = ThemeSettings::get_global(cx);
2307
2308                                    let buffer_font = theme_settings.buffer_font.family.clone();
2309                                    let buffer_font_size = TextSize::Small.rems(cx);
2310
2311                                    text_style.refine(&TextStyleRefinement {
2312                                        font_family: Some(buffer_font),
2313                                        font_size: Some(buffer_font_size.into()),
2314                                        ..Default::default()
2315                                    });
2316
2317                                    style.base_text_style = text_style;
2318                                    style
2319                                } else {
2320                                    default_markdown_style(window, cx)
2321                                },
2322                            );
2323
2324                            let markdown_element = if is_assistant_message {
2325                                markdown_element.code_block_renderer(
2326                                    markdown::CodeBlockRenderer::Custom {
2327                                        render: Arc::new({
2328                                            let workspace = workspace.clone();
2329                                            let active_thread = cx.entity();
2330                                            move |kind,
2331                                                  parsed_markdown,
2332                                                  range,
2333                                                  metadata,
2334                                                  window,
2335                                                  cx| {
2336                                                render_markdown_code_block(
2337                                                    message_id,
2338                                                    range.start,
2339                                                    kind,
2340                                                    parsed_markdown,
2341                                                    metadata,
2342                                                    active_thread.clone(),
2343                                                    workspace.clone(),
2344                                                    window,
2345                                                    cx,
2346                                                )
2347                                            }
2348                                        }),
2349                                        transform: Some(Arc::new({
2350                                            let active_thread = cx.entity();
2351                                            let editor_bg = cx.theme().colors().editor_background;
2352
2353                                            move |el, range, metadata, _, cx| {
2354                                                let is_expanded = active_thread
2355                                                    .read(cx)
2356                                                    .expanded_code_blocks
2357                                                    .get(&(message_id, range.start))
2358                                                    .copied()
2359                                                    .unwrap_or(true);
2360
2361                                                if is_expanded
2362                                                    || metadata.line_count
2363                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2364                                                {
2365                                                    return el;
2366                                                }
2367                                                el.child(
2368                                                    div()
2369                                                        .absolute()
2370                                                        .bottom_0()
2371                                                        .left_0()
2372                                                        .w_full()
2373                                                        .h_1_4()
2374                                                        .rounded_b_lg()
2375                                                        .bg(linear_gradient(
2376                                                            0.,
2377                                                            linear_color_stop(editor_bg, 0.),
2378                                                            linear_color_stop(
2379                                                                editor_bg.opacity(0.),
2380                                                                1.,
2381                                                            ),
2382                                                        )),
2383                                                )
2384                                            }
2385                                        })),
2386                                    },
2387                                )
2388                            } else {
2389                                markdown_element.code_block_renderer(
2390                                    markdown::CodeBlockRenderer::Default {
2391                                        copy_button: false,
2392                                        border: true,
2393                                    },
2394                                )
2395                            };
2396
2397                            div()
2398                                .child(markdown_element.on_url_click({
2399                                    let workspace = self.workspace.clone();
2400                                    move |text, window, cx| {
2401                                        open_markdown_link(text, workspace.clone(), window, cx);
2402                                    }
2403                                }))
2404                                .into_any_element()
2405                        }
2406                    },
2407                ),
2408            )
2409    }
2410
2411    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2412        cx.theme().colors().border.opacity(0.5)
2413    }
2414
2415    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2416        cx.theme()
2417            .colors()
2418            .element_background
2419            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2420    }
2421
2422    fn render_message_thinking_segment(
2423        &self,
2424        message_id: MessageId,
2425        ix: usize,
2426        markdown: Entity<Markdown>,
2427        scroll_handle: &ScrollHandle,
2428        pending: bool,
2429        window: &Window,
2430        cx: &Context<Self>,
2431    ) -> impl IntoElement {
2432        let is_open = self
2433            .expanded_thinking_segments
2434            .get(&(message_id, ix))
2435            .copied()
2436            .unwrap_or_default();
2437
2438        let editor_bg = cx.theme().colors().panel_background;
2439
2440        div().map(|this| {
2441            if pending {
2442                this.v_flex()
2443                    .mt_neg_2()
2444                    .mb_1p5()
2445                    .child(
2446                        h_flex()
2447                            .group("disclosure-header")
2448                            .justify_between()
2449                            .child(
2450                                h_flex()
2451                                    .gap_1p5()
2452                                    .child(
2453                                        Icon::new(IconName::LightBulb)
2454                                            .size(IconSize::XSmall)
2455                                            .color(Color::Muted),
2456                                    )
2457                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2458                            )
2459                            .child(
2460                                h_flex()
2461                                    .gap_1()
2462                                    .child(
2463                                        div().visible_on_hover("disclosure-header").child(
2464                                            Disclosure::new("thinking-disclosure", is_open)
2465                                                .opened_icon(IconName::ChevronUp)
2466                                                .closed_icon(IconName::ChevronDown)
2467                                                .on_click(cx.listener({
2468                                                    move |this, _event, _window, _cx| {
2469                                                        let is_open = this
2470                                                            .expanded_thinking_segments
2471                                                            .entry((message_id, ix))
2472                                                            .or_insert(false);
2473
2474                                                        *is_open = !*is_open;
2475                                                    }
2476                                                })),
2477                                        ),
2478                                    )
2479                                    .child({
2480                                        Icon::new(IconName::ArrowCircle)
2481                                            .color(Color::Accent)
2482                                            .size(IconSize::Small)
2483                                            .with_animation(
2484                                                "arrow-circle",
2485                                                Animation::new(Duration::from_secs(2)).repeat(),
2486                                                |icon, delta| {
2487                                                    icon.transform(Transformation::rotate(
2488                                                        percentage(delta),
2489                                                    ))
2490                                                },
2491                                            )
2492                                    }),
2493                            ),
2494                    )
2495                    .when(!is_open, |this| {
2496                        let gradient_overlay = div()
2497                            .rounded_b_lg()
2498                            .h_full()
2499                            .absolute()
2500                            .w_full()
2501                            .bottom_0()
2502                            .left_0()
2503                            .bg(linear_gradient(
2504                                180.,
2505                                linear_color_stop(editor_bg, 1.),
2506                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2507                            ));
2508
2509                        this.child(
2510                            div()
2511                                .relative()
2512                                .bg(editor_bg)
2513                                .rounded_b_lg()
2514                                .mt_2()
2515                                .pl_4()
2516                                .child(
2517                                    div()
2518                                        .id(("thinking-content", ix))
2519                                        .max_h_20()
2520                                        .track_scroll(scroll_handle)
2521                                        .text_ui_sm(cx)
2522                                        .overflow_hidden()
2523                                        .child(
2524                                            MarkdownElement::new(
2525                                                markdown.clone(),
2526                                                default_markdown_style(window, cx),
2527                                            )
2528                                            .on_url_click({
2529                                                let workspace = self.workspace.clone();
2530                                                move |text, window, cx| {
2531                                                    open_markdown_link(
2532                                                        text,
2533                                                        workspace.clone(),
2534                                                        window,
2535                                                        cx,
2536                                                    );
2537                                                }
2538                                            }),
2539                                        ),
2540                                )
2541                                .child(gradient_overlay),
2542                        )
2543                    })
2544                    .when(is_open, |this| {
2545                        this.child(
2546                            div()
2547                                .id(("thinking-content", ix))
2548                                .h_full()
2549                                .bg(editor_bg)
2550                                .text_ui_sm(cx)
2551                                .child(
2552                                    MarkdownElement::new(
2553                                        markdown.clone(),
2554                                        default_markdown_style(window, cx),
2555                                    )
2556                                    .on_url_click({
2557                                        let workspace = self.workspace.clone();
2558                                        move |text, window, cx| {
2559                                            open_markdown_link(text, workspace.clone(), window, cx);
2560                                        }
2561                                    }),
2562                                ),
2563                        )
2564                    })
2565            } else {
2566                this.v_flex()
2567                    .mt_neg_2()
2568                    .child(
2569                        h_flex()
2570                            .group("disclosure-header")
2571                            .pr_1()
2572                            .justify_between()
2573                            .opacity(0.8)
2574                            .hover(|style| style.opacity(1.))
2575                            .child(
2576                                h_flex()
2577                                    .gap_1p5()
2578                                    .child(
2579                                        Icon::new(IconName::LightBulb)
2580                                            .size(IconSize::XSmall)
2581                                            .color(Color::Muted),
2582                                    )
2583                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2584                            )
2585                            .child(
2586                                div().visible_on_hover("disclosure-header").child(
2587                                    Disclosure::new("thinking-disclosure", is_open)
2588                                        .opened_icon(IconName::ChevronUp)
2589                                        .closed_icon(IconName::ChevronDown)
2590                                        .on_click(cx.listener({
2591                                            move |this, _event, _window, _cx| {
2592                                                let is_open = this
2593                                                    .expanded_thinking_segments
2594                                                    .entry((message_id, ix))
2595                                                    .or_insert(false);
2596
2597                                                *is_open = !*is_open;
2598                                            }
2599                                        })),
2600                                ),
2601                            ),
2602                    )
2603                    .child(
2604                        div()
2605                            .id(("thinking-content", ix))
2606                            .relative()
2607                            .mt_1p5()
2608                            .ml_1p5()
2609                            .pl_2p5()
2610                            .border_l_1()
2611                            .border_color(cx.theme().colors().border_variant)
2612                            .text_ui_sm(cx)
2613                            .when(is_open, |this| {
2614                                this.child(
2615                                    MarkdownElement::new(
2616                                        markdown.clone(),
2617                                        default_markdown_style(window, cx),
2618                                    )
2619                                    .on_url_click({
2620                                        let workspace = self.workspace.clone();
2621                                        move |text, window, cx| {
2622                                            open_markdown_link(text, workspace.clone(), window, cx);
2623                                        }
2624                                    }),
2625                                )
2626                            }),
2627                    )
2628            }
2629        })
2630    }
2631
2632    fn render_tool_use(
2633        &self,
2634        tool_use: ToolUse,
2635        window: &mut Window,
2636        workspace: WeakEntity<Workspace>,
2637        cx: &mut Context<Self>,
2638    ) -> impl IntoElement + use<> {
2639        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2640            return card.render(&tool_use.status, window, workspace, cx);
2641        }
2642
2643        let is_open = self
2644            .expanded_tool_uses
2645            .get(&tool_use.id)
2646            .copied()
2647            .unwrap_or_default();
2648
2649        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2650
2651        let fs = self
2652            .workspace
2653            .upgrade()
2654            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2655        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2656        let needs_confirmation_tools = tool_use.needs_confirmation;
2657
2658        let status_icons = div().child(match &tool_use.status {
2659            ToolUseStatus::NeedsConfirmation => {
2660                let icon = Icon::new(IconName::Warning)
2661                    .color(Color::Warning)
2662                    .size(IconSize::Small);
2663                icon.into_any_element()
2664            }
2665            ToolUseStatus::Pending
2666            | ToolUseStatus::InputStillStreaming
2667            | ToolUseStatus::Running => {
2668                let icon = Icon::new(IconName::ArrowCircle)
2669                    .color(Color::Accent)
2670                    .size(IconSize::Small);
2671                icon.with_animation(
2672                    "arrow-circle",
2673                    Animation::new(Duration::from_secs(2)).repeat(),
2674                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2675                )
2676                .into_any_element()
2677            }
2678            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2679            ToolUseStatus::Error(_) => {
2680                let icon = Icon::new(IconName::Close)
2681                    .color(Color::Error)
2682                    .size(IconSize::Small);
2683                icon.into_any_element()
2684            }
2685        });
2686
2687        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2688        let results_content_container = || v_flex().p_2().gap_0p5();
2689
2690        let results_content = v_flex()
2691            .gap_1()
2692            .child(
2693                results_content_container()
2694                    .child(
2695                        Label::new("Input")
2696                            .size(LabelSize::XSmall)
2697                            .color(Color::Muted)
2698                            .buffer_font(cx),
2699                    )
2700                    .child(
2701                        div()
2702                            .w_full()
2703                            .text_ui_sm(cx)
2704                            .children(rendered_tool_use.as_ref().map(|rendered| {
2705                                MarkdownElement::new(
2706                                    rendered.input.clone(),
2707                                    tool_use_markdown_style(window, cx),
2708                                )
2709                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2710                                    copy_button: false,
2711                                    border: false,
2712                                })
2713                                .on_url_click({
2714                                    let workspace = self.workspace.clone();
2715                                    move |text, window, cx| {
2716                                        open_markdown_link(text, workspace.clone(), window, cx);
2717                                    }
2718                                })
2719                            })),
2720                    ),
2721            )
2722            .map(|container| match tool_use.status {
2723                ToolUseStatus::Finished(_) => container.child(
2724                    results_content_container()
2725                        .border_t_1()
2726                        .border_color(self.tool_card_border_color(cx))
2727                        .child(
2728                            Label::new("Result")
2729                                .size(LabelSize::XSmall)
2730                                .color(Color::Muted)
2731                                .buffer_font(cx),
2732                        )
2733                        .child(div().w_full().text_ui_sm(cx).children(
2734                            rendered_tool_use.as_ref().map(|rendered| {
2735                                MarkdownElement::new(
2736                                    rendered.output.clone(),
2737                                    tool_use_markdown_style(window, cx),
2738                                )
2739                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2740                                    copy_button: false,
2741                                    border: false,
2742                                })
2743                                .on_url_click({
2744                                    let workspace = self.workspace.clone();
2745                                    move |text, window, cx| {
2746                                        open_markdown_link(text, workspace.clone(), window, cx);
2747                                    }
2748                                })
2749                                .into_any_element()
2750                            }),
2751                        )),
2752                ),
2753                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2754                    results_content_container()
2755                        .border_t_1()
2756                        .border_color(self.tool_card_border_color(cx))
2757                        .child(
2758                            h_flex()
2759                                .gap_1()
2760                                .child(
2761                                    Icon::new(IconName::ArrowCircle)
2762                                        .size(IconSize::Small)
2763                                        .color(Color::Accent)
2764                                        .with_animation(
2765                                            "arrow-circle",
2766                                            Animation::new(Duration::from_secs(2)).repeat(),
2767                                            |icon, delta| {
2768                                                icon.transform(Transformation::rotate(percentage(
2769                                                    delta,
2770                                                )))
2771                                            },
2772                                        ),
2773                                )
2774                                .child(
2775                                    Label::new("Running…")
2776                                        .size(LabelSize::XSmall)
2777                                        .color(Color::Muted)
2778                                        .buffer_font(cx),
2779                                ),
2780                        ),
2781                ),
2782                ToolUseStatus::Error(_) => container.child(
2783                    results_content_container()
2784                        .border_t_1()
2785                        .border_color(self.tool_card_border_color(cx))
2786                        .child(
2787                            Label::new("Error")
2788                                .size(LabelSize::XSmall)
2789                                .color(Color::Muted)
2790                                .buffer_font(cx),
2791                        )
2792                        .child(
2793                            div()
2794                                .text_ui_sm(cx)
2795                                .children(rendered_tool_use.as_ref().map(|rendered| {
2796                                    MarkdownElement::new(
2797                                        rendered.output.clone(),
2798                                        tool_use_markdown_style(window, cx),
2799                                    )
2800                                    .on_url_click({
2801                                        let workspace = self.workspace.clone();
2802                                        move |text, window, cx| {
2803                                            open_markdown_link(text, workspace.clone(), window, cx);
2804                                        }
2805                                    })
2806                                    .into_any_element()
2807                                })),
2808                        ),
2809                ),
2810                ToolUseStatus::Pending => container,
2811                ToolUseStatus::NeedsConfirmation => container.child(
2812                    results_content_container()
2813                        .border_t_1()
2814                        .border_color(self.tool_card_border_color(cx))
2815                        .child(
2816                            Label::new("Asking Permission")
2817                                .size(LabelSize::Small)
2818                                .color(Color::Muted)
2819                                .buffer_font(cx),
2820                        ),
2821                ),
2822            });
2823
2824        let gradient_overlay = |color: Hsla| {
2825            div()
2826                .h_full()
2827                .absolute()
2828                .w_12()
2829                .bottom_0()
2830                .map(|element| {
2831                    if is_status_finished {
2832                        element.right_6()
2833                    } else {
2834                        element.right(px(44.))
2835                    }
2836                })
2837                .bg(linear_gradient(
2838                    90.,
2839                    linear_color_stop(color, 1.),
2840                    linear_color_stop(color.opacity(0.2), 0.),
2841                ))
2842        };
2843
2844        v_flex().gap_1().mb_2().map(|element| {
2845            if !needs_confirmation_tools {
2846                element.child(
2847                    v_flex()
2848                        .child(
2849                            h_flex()
2850                                .group("disclosure-header")
2851                                .relative()
2852                                .gap_1p5()
2853                                .justify_between()
2854                                .opacity(0.8)
2855                                .hover(|style| style.opacity(1.))
2856                                .when(!is_status_finished, |this| this.pr_2())
2857                                .child(
2858                                    h_flex()
2859                                        .id("tool-label-container")
2860                                        .gap_1p5()
2861                                        .max_w_full()
2862                                        .overflow_x_scroll()
2863                                        .child(
2864                                            Icon::new(tool_use.icon)
2865                                                .size(IconSize::XSmall)
2866                                                .color(Color::Muted),
2867                                        )
2868                                        .child(
2869                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2870                                                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| {
2871                                                    open_markdown_link(text, workspace.clone(), window, cx);
2872                                                }}))
2873                                            ),
2874                                        ),
2875                                )
2876                                .child(
2877                                    h_flex()
2878                                        .gap_1()
2879                                        .child(
2880                                            div().visible_on_hover("disclosure-header").child(
2881                                                Disclosure::new("tool-use-disclosure", is_open)
2882                                                    .opened_icon(IconName::ChevronUp)
2883                                                    .closed_icon(IconName::ChevronDown)
2884                                                    .on_click(cx.listener({
2885                                                        let tool_use_id = tool_use.id.clone();
2886                                                        move |this, _event, _window, _cx| {
2887                                                            let is_open = this
2888                                                                .expanded_tool_uses
2889                                                                .entry(tool_use_id.clone())
2890                                                                .or_insert(false);
2891
2892                                                            *is_open = !*is_open;
2893                                                        }
2894                                                    })),
2895                                            ),
2896                                        )
2897                                        .child(status_icons),
2898                                )
2899                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2900                        )
2901                        .map(|parent| {
2902                            if !is_open {
2903                                return parent;
2904                            }
2905
2906                            parent.child(
2907                                v_flex()
2908                                    .mt_1()
2909                                    .border_1()
2910                                    .border_color(self.tool_card_border_color(cx))
2911                                    .bg(cx.theme().colors().editor_background)
2912                                    .rounded_lg()
2913                                    .child(results_content),
2914                            )
2915                        }),
2916                )
2917            } else {
2918                v_flex()
2919                    .mb_2()
2920                    .rounded_lg()
2921                    .border_1()
2922                    .border_color(self.tool_card_border_color(cx))
2923                    .overflow_hidden()
2924                    .child(
2925                        h_flex()
2926                            .group("disclosure-header")
2927                            .relative()
2928                            .justify_between()
2929                            .py_1()
2930                            .map(|element| {
2931                                if is_status_finished {
2932                                    element.pl_2().pr_0p5()
2933                                } else {
2934                                    element.px_2()
2935                                }
2936                            })
2937                            .bg(self.tool_card_header_bg(cx))
2938                            .map(|element| {
2939                                if is_open {
2940                                    element.border_b_1().rounded_t_md()
2941                                } else if needs_confirmation {
2942                                    element.rounded_t_md()
2943                                } else {
2944                                    element.rounded_md()
2945                                }
2946                            })
2947                            .border_color(self.tool_card_border_color(cx))
2948                            .child(
2949                                h_flex()
2950                                    .id("tool-label-container")
2951                                    .gap_1p5()
2952                                    .max_w_full()
2953                                    .overflow_x_scroll()
2954                                    .child(
2955                                        Icon::new(tool_use.icon)
2956                                            .size(IconSize::XSmall)
2957                                            .color(Color::Muted),
2958                                    )
2959                                    .child(
2960                                        h_flex().pr_8().text_ui_sm(cx).children(
2961                                            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| {
2962                                                open_markdown_link(text, workspace.clone(), window, cx);
2963                                            }}))
2964                                        ),
2965                                    ),
2966                            )
2967                            .child(
2968                                h_flex()
2969                                    .gap_1()
2970                                    .child(
2971                                        div().visible_on_hover("disclosure-header").child(
2972                                            Disclosure::new("tool-use-disclosure", is_open)
2973                                                .opened_icon(IconName::ChevronUp)
2974                                                .closed_icon(IconName::ChevronDown)
2975                                                .on_click(cx.listener({
2976                                                    let tool_use_id = tool_use.id.clone();
2977                                                    move |this, _event, _window, _cx| {
2978                                                        let is_open = this
2979                                                            .expanded_tool_uses
2980                                                            .entry(tool_use_id.clone())
2981                                                            .or_insert(false);
2982
2983                                                        *is_open = !*is_open;
2984                                                    }
2985                                                })),
2986                                        ),
2987                                    )
2988                                    .child(status_icons),
2989                            )
2990                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
2991                    )
2992                    .map(|parent| {
2993                        if !is_open {
2994                            return parent;
2995                        }
2996
2997                        parent.child(
2998                            v_flex()
2999                                .bg(cx.theme().colors().editor_background)
3000                                .map(|element| {
3001                                    if  needs_confirmation {
3002                                        element.rounded_none()
3003                                    } else {
3004                                        element.rounded_b_lg()
3005                                    }
3006                                })
3007                                .child(results_content),
3008                        )
3009                    })
3010                    .when(needs_confirmation, |this| {
3011                        this.child(
3012                            h_flex()
3013                                .py_1()
3014                                .pl_2()
3015                                .pr_1()
3016                                .gap_1()
3017                                .justify_between()
3018                                .bg(cx.theme().colors().editor_background)
3019                                .border_t_1()
3020                                .border_color(self.tool_card_border_color(cx))
3021                                .rounded_b_lg()
3022                                .child(
3023                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3024                                )
3025                                .child(
3026                                    h_flex()
3027                                        .gap_0p5()
3028                                        .child({
3029                                            let tool_id = tool_use.id.clone();
3030                                            Button::new(
3031                                                "always-allow-tool-action",
3032                                                "Always Allow",
3033                                            )
3034                                            .label_size(LabelSize::Small)
3035                                            .icon(IconName::CheckDouble)
3036                                            .icon_position(IconPosition::Start)
3037                                            .icon_size(IconSize::Small)
3038                                            .icon_color(Color::Success)
3039                                            .tooltip(move |window, cx|  {
3040                                                Tooltip::with_meta(
3041                                                    "Never ask for permission",
3042                                                    None,
3043                                                    "Restore the original behavior in your Agent Panel settings",
3044                                                    window,
3045                                                    cx,
3046                                                )
3047                                            })
3048                                            .on_click(cx.listener(
3049                                                move |this, event, window, cx| {
3050                                                    if let Some(fs) = fs.clone() {
3051                                                        update_settings_file::<AssistantSettings>(
3052                                                            fs.clone(),
3053                                                            cx,
3054                                                            |settings, _| {
3055                                                                settings.set_always_allow_tool_actions(true);
3056                                                            },
3057                                                        );
3058                                                    }
3059                                                    this.handle_allow_tool(
3060                                                        tool_id.clone(),
3061                                                        event,
3062                                                        window,
3063                                                        cx,
3064                                                    )
3065                                                },
3066                                            ))
3067                                        })
3068                                        .child(ui::Divider::vertical())
3069                                        .child({
3070                                            let tool_id = tool_use.id.clone();
3071                                            Button::new("allow-tool-action", "Allow")
3072                                                .label_size(LabelSize::Small)
3073                                                .icon(IconName::Check)
3074                                                .icon_position(IconPosition::Start)
3075                                                .icon_size(IconSize::Small)
3076                                                .icon_color(Color::Success)
3077                                                .on_click(cx.listener(
3078                                                    move |this, event, window, cx| {
3079                                                        this.handle_allow_tool(
3080                                                            tool_id.clone(),
3081                                                            event,
3082                                                            window,
3083                                                            cx,
3084                                                        )
3085                                                    },
3086                                                ))
3087                                        })
3088                                        .child({
3089                                            let tool_id = tool_use.id.clone();
3090                                            let tool_name: Arc<str> = tool_use.name.into();
3091                                            Button::new("deny-tool", "Deny")
3092                                                .label_size(LabelSize::Small)
3093                                                .icon(IconName::Close)
3094                                                .icon_position(IconPosition::Start)
3095                                                .icon_size(IconSize::Small)
3096                                                .icon_color(Color::Error)
3097                                                .on_click(cx.listener(
3098                                                    move |this, event, window, cx| {
3099                                                        this.handle_deny_tool(
3100                                                            tool_id.clone(),
3101                                                            tool_name.clone(),
3102                                                            event,
3103                                                            window,
3104                                                            cx,
3105                                                        )
3106                                                    },
3107                                                ))
3108                                        }),
3109                                ),
3110                        )
3111                    })
3112            }
3113        }).into_any_element()
3114    }
3115
3116    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3117        let project_context = self.thread.read(cx).project_context();
3118        let project_context = project_context.borrow();
3119        let Some(project_context) = project_context.as_ref() else {
3120            return div().into_any();
3121        };
3122
3123        let user_rules_text = if project_context.user_rules.is_empty() {
3124            None
3125        } else if project_context.user_rules.len() == 1 {
3126            let user_rules = &project_context.user_rules[0];
3127
3128            match user_rules.title.as_ref() {
3129                Some(title) => Some(format!("Using \"{title}\" user rule")),
3130                None => Some("Using user rule".into()),
3131            }
3132        } else {
3133            Some(format!(
3134                "Using {} user rules",
3135                project_context.user_rules.len()
3136            ))
3137        };
3138
3139        let first_user_rules_id = project_context
3140            .user_rules
3141            .first()
3142            .map(|user_rules| user_rules.uuid.0);
3143
3144        let rules_files = project_context
3145            .worktrees
3146            .iter()
3147            .filter_map(|worktree| worktree.rules_file.as_ref())
3148            .collect::<Vec<_>>();
3149
3150        let rules_file_text = match rules_files.as_slice() {
3151            &[] => None,
3152            &[rules_file] => Some(format!(
3153                "Using project {:?} file",
3154                rules_file.path_in_worktree
3155            )),
3156            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3157        };
3158
3159        if user_rules_text.is_none() && rules_file_text.is_none() {
3160            return div().into_any();
3161        }
3162
3163        v_flex()
3164            .pt_2()
3165            .px_2p5()
3166            .gap_1()
3167            .when_some(user_rules_text, |parent, user_rules_text| {
3168                parent.child(
3169                    h_flex()
3170                        .w_full()
3171                        .child(
3172                            Icon::new(RULES_ICON)
3173                                .size(IconSize::XSmall)
3174                                .color(Color::Disabled),
3175                        )
3176                        .child(
3177                            Label::new(user_rules_text)
3178                                .size(LabelSize::XSmall)
3179                                .color(Color::Muted)
3180                                .truncate()
3181                                .buffer_font(cx)
3182                                .ml_1p5()
3183                                .mr_0p5(),
3184                        )
3185                        .child(
3186                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3187                                .shape(ui::IconButtonShape::Square)
3188                                .icon_size(IconSize::XSmall)
3189                                .icon_color(Color::Ignored)
3190                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3191                                .tooltip(Tooltip::text("View User Rules"))
3192                                .on_click(move |_event, window, cx| {
3193                                    window.dispatch_action(
3194                                        Box::new(OpenRulesLibrary {
3195                                            prompt_to_select: first_user_rules_id,
3196                                        }),
3197                                        cx,
3198                                    )
3199                                }),
3200                        ),
3201                )
3202            })
3203            .when_some(rules_file_text, |parent, rules_file_text| {
3204                parent.child(
3205                    h_flex()
3206                        .w_full()
3207                        .child(
3208                            Icon::new(IconName::File)
3209                                .size(IconSize::XSmall)
3210                                .color(Color::Disabled),
3211                        )
3212                        .child(
3213                            Label::new(rules_file_text)
3214                                .size(LabelSize::XSmall)
3215                                .color(Color::Muted)
3216                                .buffer_font(cx)
3217                                .ml_1p5()
3218                                .mr_0p5(),
3219                        )
3220                        .child(
3221                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3222                                .shape(ui::IconButtonShape::Square)
3223                                .icon_size(IconSize::XSmall)
3224                                .icon_color(Color::Ignored)
3225                                .on_click(cx.listener(Self::handle_open_rules))
3226                                .tooltip(Tooltip::text("View Rules")),
3227                        ),
3228                )
3229            })
3230            .into_any()
3231    }
3232
3233    fn handle_allow_tool(
3234        &mut self,
3235        tool_use_id: LanguageModelToolUseId,
3236        _: &ClickEvent,
3237        window: &mut Window,
3238        cx: &mut Context<Self>,
3239    ) {
3240        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3241            .thread
3242            .read(cx)
3243            .pending_tool(&tool_use_id)
3244            .map(|tool_use| tool_use.status.clone())
3245        {
3246            self.thread.update(cx, |thread, cx| {
3247                thread.run_tool(
3248                    c.tool_use_id.clone(),
3249                    c.ui_text.clone(),
3250                    c.input.clone(),
3251                    &c.messages,
3252                    c.tool.clone(),
3253                    Some(window.window_handle()),
3254                    cx,
3255                );
3256            });
3257        }
3258    }
3259
3260    fn handle_deny_tool(
3261        &mut self,
3262        tool_use_id: LanguageModelToolUseId,
3263        tool_name: Arc<str>,
3264        _: &ClickEvent,
3265        window: &mut Window,
3266        cx: &mut Context<Self>,
3267    ) {
3268        let window_handle = window.window_handle();
3269        self.thread.update(cx, |thread, cx| {
3270            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3271        });
3272    }
3273
3274    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3275        let project_context = self.thread.read(cx).project_context();
3276        let project_context = project_context.borrow();
3277        let Some(project_context) = project_context.as_ref() else {
3278            return;
3279        };
3280
3281        let project_entry_ids = project_context
3282            .worktrees
3283            .iter()
3284            .flat_map(|worktree| worktree.rules_file.as_ref())
3285            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3286            .collect::<Vec<_>>();
3287
3288        self.workspace
3289            .update(cx, move |workspace, cx| {
3290                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3291                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3292                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3293                let project = workspace.project().read(cx);
3294                let project_paths = project_entry_ids
3295                    .into_iter()
3296                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3297                    .collect::<Vec<_>>();
3298                for project_path in project_paths {
3299                    workspace
3300                        .open_path(project_path, None, true, window, cx)
3301                        .detach_and_log_err(cx);
3302                }
3303            })
3304            .ok();
3305    }
3306
3307    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3308        for window in self.notifications.drain(..) {
3309            window
3310                .update(cx, |_, window, _| {
3311                    window.remove_window();
3312                })
3313                .ok();
3314
3315            self.notification_subscriptions.remove(&window);
3316        }
3317    }
3318
3319    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3320        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3321            return None;
3322        }
3323
3324        Some(
3325            div()
3326                .occlude()
3327                .id("active-thread-scrollbar")
3328                .on_mouse_move(cx.listener(|_, _, _, cx| {
3329                    cx.notify();
3330                    cx.stop_propagation()
3331                }))
3332                .on_hover(|_, _, cx| {
3333                    cx.stop_propagation();
3334                })
3335                .on_any_mouse_down(|_, _, cx| {
3336                    cx.stop_propagation();
3337                })
3338                .on_mouse_up(
3339                    MouseButton::Left,
3340                    cx.listener(|_, _, _, cx| {
3341                        cx.stop_propagation();
3342                    }),
3343                )
3344                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3345                    cx.notify();
3346                }))
3347                .h_full()
3348                .absolute()
3349                .right_1()
3350                .top_1()
3351                .bottom_0()
3352                .w(px(12.))
3353                .cursor_default()
3354                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3355        )
3356    }
3357
3358    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3359        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3360        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3361            cx.background_executor()
3362                .timer(SCROLLBAR_SHOW_INTERVAL)
3363                .await;
3364            thread
3365                .update(cx, |thread, cx| {
3366                    if !thread.scrollbar_state.is_dragging() {
3367                        thread.show_scrollbar = false;
3368                        cx.notify();
3369                    }
3370                })
3371                .log_err();
3372        }))
3373    }
3374}
3375
3376pub enum ActiveThreadEvent {
3377    EditingMessageTokenCountChanged,
3378}
3379
3380impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3381
3382impl Render for ActiveThread {
3383    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3384        v_flex()
3385            .size_full()
3386            .relative()
3387            .on_mouse_move(cx.listener(|this, _, _, cx| {
3388                this.show_scrollbar = true;
3389                this.hide_scrollbar_later(cx);
3390                cx.notify();
3391            }))
3392            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3393                this.show_scrollbar = true;
3394                this.hide_scrollbar_later(cx);
3395                cx.notify();
3396            }))
3397            .on_mouse_up(
3398                MouseButton::Left,
3399                cx.listener(|this, _, _, cx| {
3400                    this.hide_scrollbar_later(cx);
3401                }),
3402            )
3403            .child(list(self.list_state.clone()).flex_grow())
3404            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3405                this.child(scrollbar)
3406            })
3407    }
3408}
3409
3410pub(crate) fn open_context(
3411    context: &AgentContextHandle,
3412    workspace: Entity<Workspace>,
3413    window: &mut Window,
3414    cx: &mut App,
3415) {
3416    match context {
3417        AgentContextHandle::File(file_context) => {
3418            if let Some(project_path) = file_context.project_path(cx) {
3419                workspace.update(cx, |workspace, cx| {
3420                    workspace
3421                        .open_path(project_path, None, true, window, cx)
3422                        .detach_and_log_err(cx);
3423                });
3424            }
3425        }
3426
3427        AgentContextHandle::Directory(directory_context) => {
3428            let entry_id = directory_context.entry_id;
3429            workspace.update(cx, |workspace, cx| {
3430                workspace.project().update(cx, |_project, cx| {
3431                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3432                })
3433            })
3434        }
3435
3436        AgentContextHandle::Symbol(symbol_context) => {
3437            let buffer = symbol_context.buffer.read(cx);
3438            if let Some(project_path) = buffer.project_path(cx) {
3439                let snapshot = buffer.snapshot();
3440                let target_position = symbol_context.range.start.to_point(&snapshot);
3441                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3442                    .detach();
3443            }
3444        }
3445
3446        AgentContextHandle::Selection(selection_context) => {
3447            let buffer = selection_context.buffer.read(cx);
3448            if let Some(project_path) = buffer.project_path(cx) {
3449                let snapshot = buffer.snapshot();
3450                let target_position = selection_context.range.start.to_point(&snapshot);
3451
3452                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3453                    .detach();
3454            }
3455        }
3456
3457        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3458            cx.open_url(&fetched_url_context.url);
3459        }
3460
3461        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3462            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3463                panel.update(cx, |panel, cx| {
3464                    panel.open_thread(thread_context.thread.clone(), window, cx);
3465                });
3466            }
3467        }),
3468
3469        AgentContextHandle::TextThread(text_thread_context) => {
3470            workspace.update(cx, |workspace, cx| {
3471                if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3472                    panel.update(cx, |panel, cx| {
3473                        panel.open_prompt_editor(text_thread_context.context.clone(), window, cx)
3474                    });
3475                }
3476            })
3477        }
3478
3479        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3480            Box::new(OpenRulesLibrary {
3481                prompt_to_select: Some(rules_context.prompt_id.0),
3482            }),
3483            cx,
3484        ),
3485
3486        AgentContextHandle::Image(_) => {}
3487    }
3488}
3489
3490fn open_editor_at_position(
3491    project_path: project::ProjectPath,
3492    target_position: Point,
3493    workspace: &Entity<Workspace>,
3494    window: &mut Window,
3495    cx: &mut App,
3496) -> Task<()> {
3497    let open_task = workspace.update(cx, |workspace, cx| {
3498        workspace.open_path(project_path, None, true, window, cx)
3499    });
3500    window.spawn(cx, async move |cx| {
3501        if let Some(active_editor) = open_task
3502            .await
3503            .log_err()
3504            .and_then(|item| item.downcast::<Editor>())
3505        {
3506            active_editor
3507                .downgrade()
3508                .update_in(cx, |editor, window, cx| {
3509                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3510                })
3511                .log_err();
3512        }
3513    })
3514}
3515
3516#[cfg(test)]
3517mod tests {
3518    use assistant_tool::{ToolRegistry, ToolWorkingSet};
3519    use editor::EditorSettings;
3520    use fs::FakeFs;
3521    use gpui::{TestAppContext, VisualTestContext};
3522    use language_model::{LanguageModel, fake_provider::FakeLanguageModel};
3523    use project::Project;
3524    use prompt_store::PromptBuilder;
3525    use serde_json::json;
3526    use settings::SettingsStore;
3527    use util::path;
3528
3529    use crate::{ContextLoadResult, thread_store};
3530
3531    use super::*;
3532
3533    #[gpui::test]
3534    async fn test_current_completion_cancelled_when_message_edited(cx: &mut TestAppContext) {
3535        init_test_settings(cx);
3536
3537        let project = create_test_project(
3538            cx,
3539            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
3540        )
3541        .await;
3542
3543        let (cx, active_thread, thread, model) = setup_test_environment(cx, project.clone()).await;
3544
3545        // Insert user message without any context (empty context vector)
3546        let message = thread.update(cx, |thread, cx| {
3547            let message_id = thread.insert_user_message(
3548                "What is the best way to learn Rust?",
3549                ContextLoadResult::default(),
3550                None,
3551                vec![],
3552                cx,
3553            );
3554            thread
3555                .message(message_id)
3556                .expect("message should exist")
3557                .clone()
3558        });
3559
3560        // Stream response to user message
3561        thread.update(cx, |thread, cx| {
3562            let request = thread.to_completion_request(model.clone(), cx);
3563            thread.stream_completion(request, model, cx.active_window(), cx)
3564        });
3565        let generating = thread.update(cx, |thread, _cx| thread.is_generating());
3566        assert!(generating, "There should be one pending completion");
3567
3568        // Edit the previous message
3569        active_thread.update_in(cx, |active_thread, window, cx| {
3570            active_thread.start_editing_message(message.id, &message.segments, window, cx);
3571        });
3572
3573        // Check that the stream was cancelled
3574        let generating = thread.update(cx, |thread, _cx| thread.is_generating());
3575        assert!(!generating, "The completion should have been cancelled");
3576    }
3577
3578    fn init_test_settings(cx: &mut TestAppContext) {
3579        cx.update(|cx| {
3580            let settings_store = SettingsStore::test(cx);
3581            cx.set_global(settings_store);
3582            language::init(cx);
3583            Project::init_settings(cx);
3584            AssistantSettings::register(cx);
3585            prompt_store::init(cx);
3586            thread_store::init(cx);
3587            workspace::init_settings(cx);
3588            language_model::init_settings(cx);
3589            ThemeSettings::register(cx);
3590            EditorSettings::register(cx);
3591            ToolRegistry::default_global(cx);
3592        });
3593    }
3594
3595    // Helper to create a test project with test files
3596    async fn create_test_project(
3597        cx: &mut TestAppContext,
3598        files: serde_json::Value,
3599    ) -> Entity<Project> {
3600        let fs = FakeFs::new(cx.executor());
3601        fs.insert_tree(path!("/test"), files).await;
3602        Project::test(fs, [path!("/test").as_ref()], cx).await
3603    }
3604
3605    async fn setup_test_environment(
3606        cx: &mut TestAppContext,
3607        project: Entity<Project>,
3608    ) -> (
3609        &mut VisualTestContext,
3610        Entity<ActiveThread>,
3611        Entity<Thread>,
3612        Arc<dyn LanguageModel>,
3613    ) {
3614        let (workspace, cx) =
3615            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
3616
3617        let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3618        let thread_store = cx
3619            .update(|_, cx| {
3620                ThreadStore::load(
3621                    project.clone(),
3622                    cx.new(|_| ToolWorkingSet::default()),
3623                    None,
3624                    prompt_builder.clone(),
3625                    cx,
3626                )
3627            })
3628            .await
3629            .unwrap();
3630        let text_thread_store = cx
3631            .update(|_, cx| {
3632                TextThreadStore::new(project.clone(), prompt_builder, Default::default(), cx)
3633            })
3634            .await
3635            .unwrap();
3636
3637        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
3638        let context_store = cx.new(|_cx| ContextStore::new(project.downgrade(), None));
3639
3640        let model = FakeLanguageModel::default();
3641        let model: Arc<dyn LanguageModel> = Arc::new(model);
3642
3643        let language_registry = LanguageRegistry::new(cx.executor());
3644        let language_registry = Arc::new(language_registry);
3645
3646        let active_thread = cx.update(|window, cx| {
3647            cx.new(|cx| {
3648                ActiveThread::new(
3649                    thread.clone(),
3650                    thread_store.clone(),
3651                    text_thread_store.clone(),
3652                    context_store.clone(),
3653                    language_registry.clone(),
3654                    workspace.downgrade(),
3655                    window,
3656                    cx,
3657                )
3658            })
3659        });
3660
3661        (cx, active_thread, thread, model)
3662    }
3663}