1use crate::context::{AssistantContext, ContextId};
   2use crate::context_picker::MentionLink;
   3use crate::thread::{
   4    LastRestoreCheckpoint, MessageId, MessageSegment, RequestKind, Thread, ThreadError,
   5    ThreadEvent, ThreadFeedback,
   6};
   7use crate::thread_store::{RulesLoadingError, ThreadStore};
   8use crate::tool_use::{PendingToolUseStatus, ToolUse, ToolUseStatus};
   9use crate::ui::{AddedContext, AgentNotification, AgentNotificationEvent, ContextPill};
  10use crate::{AssistantPanel, OpenActiveThreadAsMarkdown};
  11use anyhow::Context as _;
  12use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
  13use collections::{HashMap, HashSet};
  14use editor::scroll::Autoscroll;
  15use editor::{Editor, MultiBuffer};
  16use gpui::{
  17    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardItem,
  18    DefiniteLength, EdgesRefinement, Empty, Entity, Focusable, Hsla, ListAlignment, ListState,
  19    MouseButton, PlatformDisplay, ScrollHandle, Stateful, StyleRefinement, Subscription, Task,
  20    TextStyleRefinement, Transformation, UnderlineStyle, WeakEntity, WindowHandle,
  21    linear_color_stop, linear_gradient, list, percentage, pulsating_between,
  22};
  23use language::{Buffer, LanguageRegistry};
  24use language_model::{LanguageModelRegistry, LanguageModelToolUseId, Role, StopReason};
  25use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  26use markdown::{Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
  27use project::ProjectItem as _;
  28use rope::Point;
  29use settings::{Settings as _, update_settings_file};
  30use std::path::Path;
  31use std::rc::Rc;
  32use std::sync::Arc;
  33use std::time::Duration;
  34use text::ToPoint;
  35use theme::ThemeSettings;
  36use ui::{Disclosure, IconButton, KeyBinding, Scrollbar, ScrollbarState, Tooltip, prelude::*};
  37use util::ResultExt as _;
  38use workspace::{OpenOptions, Workspace};
  39
  40use crate::context_store::ContextStore;
  41
  42pub struct ActiveThread {
  43    language_registry: Arc<LanguageRegistry>,
  44    thread_store: Entity<ThreadStore>,
  45    thread: Entity<Thread>,
  46    context_store: Entity<ContextStore>,
  47    workspace: WeakEntity<Workspace>,
  48    save_thread_task: Option<Task<()>>,
  49    messages: Vec<MessageId>,
  50    list_state: ListState,
  51    scrollbar_state: ScrollbarState,
  52    show_scrollbar: bool,
  53    hide_scrollbar_task: Option<Task<()>>,
  54    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  55    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  56    editing_message: Option<(MessageId, EditMessageState)>,
  57    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  58    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  59    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  60    last_error: Option<ThreadError>,
  61    notifications: Vec<WindowHandle<AgentNotification>>,
  62    copied_code_block_ids: HashSet<(MessageId, usize)>,
  63    _subscriptions: Vec<Subscription>,
  64    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  65    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  66}
  67
  68const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 5;
  69
  70struct RenderedMessage {
  71    language_registry: Arc<LanguageRegistry>,
  72    segments: Vec<RenderedMessageSegment>,
  73}
  74
  75#[derive(Clone)]
  76struct RenderedToolUse {
  77    label: Entity<Markdown>,
  78    input: Entity<Markdown>,
  79    output: Entity<Markdown>,
  80}
  81
  82impl RenderedMessage {
  83    fn from_segments(
  84        segments: &[MessageSegment],
  85        language_registry: Arc<LanguageRegistry>,
  86        cx: &mut App,
  87    ) -> Self {
  88        let mut this = Self {
  89            language_registry,
  90            segments: Vec::with_capacity(segments.len()),
  91        };
  92        for segment in segments {
  93            this.push_segment(segment, cx);
  94        }
  95        this
  96    }
  97
  98    fn append_thinking(&mut self, text: &String, cx: &mut App) {
  99        if let Some(RenderedMessageSegment::Thinking {
 100            content,
 101            scroll_handle,
 102        }) = self.segments.last_mut()
 103        {
 104            content.update(cx, |markdown, cx| {
 105                markdown.append(text, cx);
 106            });
 107            scroll_handle.scroll_to_bottom();
 108        } else {
 109            self.segments.push(RenderedMessageSegment::Thinking {
 110                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 111                scroll_handle: ScrollHandle::default(),
 112            });
 113        }
 114    }
 115
 116    fn append_text(&mut self, text: &String, cx: &mut App) {
 117        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 118            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 119        } else {
 120            self.segments
 121                .push(RenderedMessageSegment::Text(parse_markdown(
 122                    SharedString::from(text),
 123                    self.language_registry.clone(),
 124                    cx,
 125                )));
 126        }
 127    }
 128
 129    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 130        let rendered_segment = match segment {
 131            MessageSegment::Thinking(text) => RenderedMessageSegment::Thinking {
 132                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 133                scroll_handle: ScrollHandle::default(),
 134            },
 135            MessageSegment::Text(text) => RenderedMessageSegment::Text(parse_markdown(
 136                text.into(),
 137                self.language_registry.clone(),
 138                cx,
 139            )),
 140        };
 141        self.segments.push(rendered_segment);
 142    }
 143}
 144
 145enum RenderedMessageSegment {
 146    Thinking {
 147        content: Entity<Markdown>,
 148        scroll_handle: ScrollHandle,
 149    },
 150    Text(Entity<Markdown>),
 151}
 152
 153fn parse_markdown(
 154    text: SharedString,
 155    language_registry: Arc<LanguageRegistry>,
 156    cx: &mut App,
 157) -> Entity<Markdown> {
 158    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 159}
 160
 161fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 162    let theme_settings = ThemeSettings::get_global(cx);
 163    let colors = cx.theme().colors();
 164    let ui_font_size = TextSize::Default.rems(cx);
 165    let buffer_font_size = TextSize::Small.rems(cx);
 166    let mut text_style = window.text_style();
 167
 168    text_style.refine(&TextStyleRefinement {
 169        font_family: Some(theme_settings.ui_font.family.clone()),
 170        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 171        font_features: Some(theme_settings.ui_font.features.clone()),
 172        font_size: Some(ui_font_size.into()),
 173        color: Some(cx.theme().colors().text),
 174        ..Default::default()
 175    });
 176
 177    MarkdownStyle {
 178        base_text_style: text_style,
 179        syntax: cx.theme().syntax().clone(),
 180        selection_background_color: cx.theme().players().local().selection,
 181        code_block_overflow_x_scroll: true,
 182        table_overflow_x_scroll: true,
 183        code_block: StyleRefinement {
 184            padding: EdgesRefinement {
 185                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 186                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 187                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 188                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 189            },
 190            background: Some(colors.editor_background.into()),
 191            text: Some(TextStyleRefinement {
 192                font_family: Some(theme_settings.buffer_font.family.clone()),
 193                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 194                font_features: Some(theme_settings.buffer_font.features.clone()),
 195                font_size: Some(buffer_font_size.into()),
 196                ..Default::default()
 197            }),
 198            ..Default::default()
 199        },
 200        inline_code: TextStyleRefinement {
 201            font_family: Some(theme_settings.buffer_font.family.clone()),
 202            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 203            font_features: Some(theme_settings.buffer_font.features.clone()),
 204            font_size: Some(buffer_font_size.into()),
 205            background_color: Some(colors.editor_foreground.opacity(0.08)),
 206            ..Default::default()
 207        },
 208        link: TextStyleRefinement {
 209            background_color: Some(colors.editor_foreground.opacity(0.025)),
 210            underline: Some(UnderlineStyle {
 211                color: Some(colors.text_accent.opacity(0.5)),
 212                thickness: px(1.),
 213                ..Default::default()
 214            }),
 215            ..Default::default()
 216        },
 217        link_callback: Some(Rc::new(move |url, cx| {
 218            if MentionLink::is_valid(url) {
 219                let colors = cx.theme().colors();
 220                Some(TextStyleRefinement {
 221                    background_color: Some(colors.element_background),
 222                    ..Default::default()
 223                })
 224            } else {
 225                None
 226            }
 227        })),
 228        ..Default::default()
 229    }
 230}
 231
 232fn render_tool_use_markdown(
 233    text: SharedString,
 234    language_registry: Arc<LanguageRegistry>,
 235    cx: &mut App,
 236) -> Entity<Markdown> {
 237    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 238}
 239
 240fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 241    let theme_settings = ThemeSettings::get_global(cx);
 242    let colors = cx.theme().colors();
 243    let ui_font_size = TextSize::Default.rems(cx);
 244    let buffer_font_size = TextSize::Small.rems(cx);
 245    let mut text_style = window.text_style();
 246
 247    text_style.refine(&TextStyleRefinement {
 248        font_family: Some(theme_settings.ui_font.family.clone()),
 249        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 250        font_features: Some(theme_settings.ui_font.features.clone()),
 251        font_size: Some(ui_font_size.into()),
 252        color: Some(cx.theme().colors().text),
 253        ..Default::default()
 254    });
 255
 256    MarkdownStyle {
 257        base_text_style: text_style,
 258        syntax: cx.theme().syntax().clone(),
 259        selection_background_color: cx.theme().players().local().selection,
 260        code_block_overflow_x_scroll: true,
 261        code_block: StyleRefinement {
 262            margin: EdgesRefinement::default(),
 263            padding: EdgesRefinement::default(),
 264            background: Some(colors.editor_background.into()),
 265            border_color: None,
 266            border_widths: EdgesRefinement::default(),
 267            text: Some(TextStyleRefinement {
 268                font_family: Some(theme_settings.buffer_font.family.clone()),
 269                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 270                font_features: Some(theme_settings.buffer_font.features.clone()),
 271                font_size: Some(buffer_font_size.into()),
 272                ..Default::default()
 273            }),
 274            ..Default::default()
 275        },
 276        inline_code: TextStyleRefinement {
 277            font_family: Some(theme_settings.buffer_font.family.clone()),
 278            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 279            font_features: Some(theme_settings.buffer_font.features.clone()),
 280            font_size: Some(TextSize::XSmall.rems(cx).into()),
 281            ..Default::default()
 282        },
 283        heading: StyleRefinement {
 284            text: Some(TextStyleRefinement {
 285                font_size: Some(ui_font_size.into()),
 286                ..Default::default()
 287            }),
 288            ..Default::default()
 289        },
 290        ..Default::default()
 291    }
 292}
 293
 294fn render_markdown_code_block(
 295    message_id: MessageId,
 296    ix: usize,
 297    kind: &CodeBlockKind,
 298    parsed_markdown: &ParsedMarkdown,
 299    metadata: CodeBlockMetadata,
 300    active_thread: Entity<ActiveThread>,
 301    workspace: WeakEntity<Workspace>,
 302    _window: &Window,
 303    cx: &App,
 304) -> Div {
 305    let label = match kind {
 306        CodeBlockKind::Indented => None,
 307        CodeBlockKind::Fenced => Some(
 308            h_flex()
 309                .gap_1()
 310                .child(
 311                    Icon::new(IconName::Code)
 312                        .color(Color::Muted)
 313                        .size(IconSize::XSmall),
 314                )
 315                .child(Label::new("untitled").size(LabelSize::Small))
 316                .into_any_element(),
 317        ),
 318        CodeBlockKind::FencedLang(raw_language_name) => Some(
 319            h_flex()
 320                .gap_1()
 321                .children(
 322                    parsed_markdown
 323                        .languages_by_name
 324                        .get(raw_language_name)
 325                        .and_then(|language| {
 326                            language
 327                                .config()
 328                                .matcher
 329                                .path_suffixes
 330                                .iter()
 331                                .find_map(|extension| {
 332                                    file_icons::FileIcons::get_icon(Path::new(extension), cx)
 333                                })
 334                                .map(Icon::from_path)
 335                                .map(|icon| icon.color(Color::Muted).size(IconSize::Small))
 336                        }),
 337                )
 338                .child(
 339                    Label::new(
 340                        parsed_markdown
 341                            .languages_by_name
 342                            .get(raw_language_name)
 343                            .map(|language| language.name().into())
 344                            .clone()
 345                            .unwrap_or_else(|| raw_language_name.clone()),
 346                    )
 347                    .size(LabelSize::Small),
 348                )
 349                .into_any_element(),
 350        ),
 351        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 352            let content = if let Some(parent) = path_range.path.parent() {
 353                h_flex()
 354                    .ml_1()
 355                    .gap_1()
 356                    .child(
 357                        Label::new(file_name.to_string_lossy().to_string()).size(LabelSize::Small),
 358                    )
 359                    .child(
 360                        Label::new(parent.to_string_lossy().to_string())
 361                            .color(Color::Muted)
 362                            .size(LabelSize::Small),
 363                    )
 364                    .into_any_element()
 365            } else {
 366                Label::new(path_range.path.to_string_lossy().to_string())
 367                    .size(LabelSize::Small)
 368                    .ml_1()
 369                    .into_any_element()
 370            };
 371
 372            h_flex()
 373                .id(("code-block-header-label", ix))
 374                .w_full()
 375                .max_w_full()
 376                .px_1()
 377                .gap_0p5()
 378                .cursor_pointer()
 379                .rounded_sm()
 380                .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 381                .tooltip(Tooltip::text("Jump to File"))
 382                .child(
 383                    h_flex()
 384                        .gap_0p5()
 385                        .children(
 386                            file_icons::FileIcons::get_icon(&path_range.path, cx)
 387                                .map(Icon::from_path)
 388                                .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 389                        )
 390                        .child(content)
 391                        .child(
 392                            Icon::new(IconName::ArrowUpRight)
 393                                .size(IconSize::XSmall)
 394                                .color(Color::Ignored),
 395                        ),
 396                )
 397                .on_click({
 398                    let path_range = path_range.clone();
 399                    move |_, window, cx| {
 400                        workspace
 401                            .update(cx, {
 402                                |workspace, cx| {
 403                                    if let Some(project_path) = workspace
 404                                        .project()
 405                                        .read(cx)
 406                                        .find_project_path(&path_range.path, cx)
 407                                    {
 408                                        let target = path_range.range.as_ref().map(|range| {
 409                                            Point::new(
 410                                                // Line number is 1-based
 411                                                range.start.line.saturating_sub(1),
 412                                                range.start.col.unwrap_or(0),
 413                                            )
 414                                        });
 415                                        let open_task = workspace.open_path(
 416                                            project_path,
 417                                            None,
 418                                            true,
 419                                            window,
 420                                            cx,
 421                                        );
 422                                        window
 423                                            .spawn(cx, async move |cx| {
 424                                                let item = open_task.await?;
 425                                                if let Some(target) = target {
 426                                                    if let Some(active_editor) =
 427                                                        item.downcast::<Editor>()
 428                                                    {
 429                                                        active_editor
 430                                                            .downgrade()
 431                                                            .update_in(cx, |editor, window, cx| {
 432                                                                editor
 433                                                                    .go_to_singleton_buffer_point(
 434                                                                        target, window, cx,
 435                                                                    );
 436                                                            })
 437                                                            .log_err();
 438                                                    }
 439                                                }
 440                                                anyhow::Ok(())
 441                                            })
 442                                            .detach_and_log_err(cx);
 443                                    }
 444                                }
 445                            })
 446                            .ok();
 447                    }
 448                })
 449                .into_any_element()
 450        }),
 451    };
 452
 453    let codeblock_was_copied = active_thread
 454        .read(cx)
 455        .copied_code_block_ids
 456        .contains(&(message_id, ix));
 457
 458    let is_expanded = active_thread
 459        .read(cx)
 460        .expanded_code_blocks
 461        .get(&(message_id, ix))
 462        .copied()
 463        .unwrap_or(false);
 464
 465    let codeblock_header_bg = cx
 466        .theme()
 467        .colors()
 468        .element_background
 469        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 470
 471    let codeblock_header = h_flex()
 472        .group("codeblock_header")
 473        .p_1()
 474        .gap_1()
 475        .justify_between()
 476        .border_b_1()
 477        .border_color(cx.theme().colors().border_variant)
 478        .bg(codeblock_header_bg)
 479        .rounded_t_md()
 480        .children(label)
 481        .child(
 482            h_flex()
 483                .gap_1()
 484                .child(
 485                    div().visible_on_hover("codeblock_header").child(
 486                        IconButton::new(
 487                            ("copy-markdown-code", ix),
 488                            if codeblock_was_copied {
 489                                IconName::Check
 490                            } else {
 491                                IconName::Copy
 492                            },
 493                        )
 494                        .icon_color(Color::Muted)
 495                        .shape(ui::IconButtonShape::Square)
 496                        .tooltip(Tooltip::text("Copy Code"))
 497                        .on_click({
 498                            let active_thread = active_thread.clone();
 499                            let parsed_markdown = parsed_markdown.clone();
 500                            let code_block_range = metadata.content_range.clone();
 501                            move |_event, _window, cx| {
 502                                active_thread.update(cx, |this, cx| {
 503                                    this.copied_code_block_ids.insert((message_id, ix));
 504
 505                                    let code = parsed_markdown.source()[code_block_range.clone()]
 506                                        .to_string();
 507                                    cx.write_to_clipboard(ClipboardItem::new_string(code));
 508
 509                                    cx.spawn(async move |this, cx| {
 510                                        cx.background_executor()
 511                                            .timer(Duration::from_secs(2))
 512                                            .await;
 513
 514                                        cx.update(|cx| {
 515                                            this.update(cx, |this, cx| {
 516                                                this.copied_code_block_ids
 517                                                    .remove(&(message_id, ix));
 518                                                cx.notify();
 519                                            })
 520                                        })
 521                                        .ok();
 522                                    })
 523                                    .detach();
 524                                });
 525                            }
 526                        }),
 527                    ),
 528                )
 529                .when(
 530                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 531                    |header| {
 532                        header.child(
 533                            IconButton::new(
 534                                ("expand-collapse-code", ix),
 535                                if is_expanded {
 536                                    IconName::ChevronUp
 537                                } else {
 538                                    IconName::ChevronDown
 539                                },
 540                            )
 541                            .icon_color(Color::Muted)
 542                            .shape(ui::IconButtonShape::Square)
 543                            .tooltip(Tooltip::text(if is_expanded {
 544                                "Collapse Code"
 545                            } else {
 546                                "Expand Code"
 547                            }))
 548                            .on_click({
 549                                let active_thread = active_thread.clone();
 550                                move |_event, _window, cx| {
 551                                    active_thread.update(cx, |this, cx| {
 552                                        let is_expanded = this
 553                                            .expanded_code_blocks
 554                                            .entry((message_id, ix))
 555                                            .or_insert(false);
 556                                        *is_expanded = !*is_expanded;
 557                                        cx.notify();
 558                                    });
 559                                }
 560                            }),
 561                        )
 562                    },
 563                ),
 564        );
 565
 566    v_flex()
 567        .my_2()
 568        .overflow_hidden()
 569        .rounded_lg()
 570        .border_1()
 571        .border_color(cx.theme().colors().border_variant)
 572        .bg(cx.theme().colors().editor_background)
 573        .child(codeblock_header)
 574        .when(
 575            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 576            |this| {
 577                if is_expanded {
 578                    this.h_full()
 579                } else {
 580                    this.max_h_40()
 581                }
 582            },
 583        )
 584}
 585
 586fn open_markdown_link(
 587    text: SharedString,
 588    workspace: WeakEntity<Workspace>,
 589    window: &mut Window,
 590    cx: &mut App,
 591) {
 592    let Some(workspace) = workspace.upgrade() else {
 593        cx.open_url(&text);
 594        return;
 595    };
 596
 597    match MentionLink::try_parse(&text, &workspace, cx) {
 598        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 599            if entry.is_dir() {
 600                workspace.project().update(cx, |_, cx| {
 601                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 602                })
 603            } else {
 604                workspace
 605                    .open_path(path, None, true, window, cx)
 606                    .detach_and_log_err(cx);
 607            }
 608        }),
 609        Some(MentionLink::Symbol(path, symbol_name)) => {
 610            let open_task = workspace.update(cx, |workspace, cx| {
 611                workspace.open_path(path, None, true, window, cx)
 612            });
 613            window
 614                .spawn(cx, async move |cx| {
 615                    let active_editor = open_task
 616                        .await?
 617                        .downcast::<Editor>()
 618                        .context("Item is not an editor")?;
 619                    active_editor.update_in(cx, |editor, window, cx| {
 620                        let symbol_range = editor
 621                            .buffer()
 622                            .read(cx)
 623                            .snapshot(cx)
 624                            .outline(None)
 625                            .and_then(|outline| {
 626                                outline
 627                                    .find_most_similar(&symbol_name)
 628                                    .map(|(_, item)| item.range.clone())
 629                            })
 630                            .context("Could not find matching symbol")?;
 631
 632                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 633                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 634                        });
 635                        anyhow::Ok(())
 636                    })
 637                })
 638                .detach_and_log_err(cx);
 639        }
 640        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 641            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 642                panel.update(cx, |panel, cx| {
 643                    panel
 644                        .open_thread(&thread_id, window, cx)
 645                        .detach_and_log_err(cx)
 646                });
 647            }
 648        }),
 649        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 650        None => cx.open_url(&text),
 651    }
 652}
 653
 654struct EditMessageState {
 655    editor: Entity<Editor>,
 656}
 657
 658impl ActiveThread {
 659    pub fn new(
 660        thread: Entity<Thread>,
 661        thread_store: Entity<ThreadStore>,
 662        language_registry: Arc<LanguageRegistry>,
 663        context_store: Entity<ContextStore>,
 664        workspace: WeakEntity<Workspace>,
 665        window: &mut Window,
 666        cx: &mut Context<Self>,
 667    ) -> Self {
 668        let subscriptions = vec![
 669            cx.observe(&thread, |_, _, cx| cx.notify()),
 670            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 671            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 672        ];
 673
 674        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 675            let this = cx.entity().downgrade();
 676            move |ix, window: &mut Window, cx: &mut App| {
 677                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 678                    .unwrap()
 679            }
 680        });
 681
 682        let mut this = Self {
 683            language_registry,
 684            thread_store,
 685            thread: thread.clone(),
 686            context_store,
 687            workspace,
 688            save_thread_task: None,
 689            messages: Vec::new(),
 690            rendered_messages_by_id: HashMap::default(),
 691            rendered_tool_uses: HashMap::default(),
 692            expanded_tool_uses: HashMap::default(),
 693            expanded_thinking_segments: HashMap::default(),
 694            expanded_code_blocks: HashMap::default(),
 695            list_state: list_state.clone(),
 696            scrollbar_state: ScrollbarState::new(list_state),
 697            show_scrollbar: false,
 698            hide_scrollbar_task: None,
 699            editing_message: None,
 700            last_error: None,
 701            copied_code_block_ids: HashSet::default(),
 702            notifications: Vec::new(),
 703            _subscriptions: subscriptions,
 704            notification_subscriptions: HashMap::default(),
 705            open_feedback_editors: HashMap::default(),
 706        };
 707
 708        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 709            this.push_message(&message.id, &message.segments, window, cx);
 710
 711            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 712                this.render_tool_use_markdown(
 713                    tool_use.id.clone(),
 714                    tool_use.ui_text.clone(),
 715                    &tool_use.input,
 716                    tool_use.status.text(),
 717                    cx,
 718                );
 719            }
 720        }
 721
 722        this
 723    }
 724
 725    pub fn thread(&self) -> &Entity<Thread> {
 726        &self.thread
 727    }
 728
 729    pub fn is_empty(&self) -> bool {
 730        self.messages.is_empty()
 731    }
 732
 733    pub fn summary(&self, cx: &App) -> Option<SharedString> {
 734        self.thread.read(cx).summary()
 735    }
 736
 737    pub fn summary_or_default(&self, cx: &App) -> SharedString {
 738        self.thread.read(cx).summary_or_default()
 739    }
 740
 741    pub fn cancel_last_completion(&mut self, cx: &mut App) -> bool {
 742        self.last_error.take();
 743        self.thread
 744            .update(cx, |thread, cx| thread.cancel_last_completion(cx))
 745    }
 746
 747    pub fn last_error(&self) -> Option<ThreadError> {
 748        self.last_error.clone()
 749    }
 750
 751    pub fn clear_last_error(&mut self) {
 752        self.last_error.take();
 753    }
 754
 755    fn push_message(
 756        &mut self,
 757        id: &MessageId,
 758        segments: &[MessageSegment],
 759        _window: &mut Window,
 760        cx: &mut Context<Self>,
 761    ) {
 762        let old_len = self.messages.len();
 763        self.messages.push(*id);
 764        self.list_state.splice(old_len..old_len, 1);
 765
 766        let rendered_message =
 767            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 768        self.rendered_messages_by_id.insert(*id, rendered_message);
 769    }
 770
 771    fn edited_message(
 772        &mut self,
 773        id: &MessageId,
 774        segments: &[MessageSegment],
 775        _window: &mut Window,
 776        cx: &mut Context<Self>,
 777    ) {
 778        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 779            return;
 780        };
 781        self.list_state.splice(index..index + 1, 1);
 782        let rendered_message =
 783            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 784        self.rendered_messages_by_id.insert(*id, rendered_message);
 785    }
 786
 787    fn deleted_message(&mut self, id: &MessageId) {
 788        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 789            return;
 790        };
 791        self.messages.remove(index);
 792        self.list_state.splice(index..index + 1, 0);
 793        self.rendered_messages_by_id.remove(id);
 794    }
 795
 796    fn render_tool_use_markdown(
 797        &mut self,
 798        tool_use_id: LanguageModelToolUseId,
 799        tool_label: impl Into<SharedString>,
 800        tool_input: &serde_json::Value,
 801        tool_output: SharedString,
 802        cx: &mut Context<Self>,
 803    ) {
 804        let rendered = RenderedToolUse {
 805            label: render_tool_use_markdown(tool_label.into(), self.language_registry.clone(), cx),
 806            input: render_tool_use_markdown(
 807                format!(
 808                    "```json\n{}\n```",
 809                    serde_json::to_string_pretty(tool_input).unwrap_or_default()
 810                )
 811                .into(),
 812                self.language_registry.clone(),
 813                cx,
 814            ),
 815            output: render_tool_use_markdown(tool_output, self.language_registry.clone(), cx),
 816        };
 817        self.rendered_tool_uses
 818            .insert(tool_use_id.clone(), rendered);
 819    }
 820
 821    fn handle_thread_event(
 822        &mut self,
 823        _thread: &Entity<Thread>,
 824        event: &ThreadEvent,
 825        window: &mut Window,
 826        cx: &mut Context<Self>,
 827    ) {
 828        match event {
 829            ThreadEvent::ShowError(error) => {
 830                self.last_error = Some(error.clone());
 831            }
 832            ThreadEvent::StreamedCompletion
 833            | ThreadEvent::SummaryGenerated
 834            | ThreadEvent::SummaryChanged => {
 835                self.save_thread(cx);
 836            }
 837            ThreadEvent::Stopped(reason) => match reason {
 838                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 839                    let thread = self.thread.read(cx);
 840                    self.show_notification(
 841                        if thread.used_tools_since_last_user_message() {
 842                            "Finished running tools"
 843                        } else {
 844                            "New message"
 845                        },
 846                        IconName::ZedAssistant,
 847                        window,
 848                        cx,
 849                    );
 850                }
 851                _ => {}
 852            },
 853            ThreadEvent::ToolConfirmationNeeded => {
 854                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 855            }
 856            ThreadEvent::StreamedAssistantText(message_id, text) => {
 857                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 858                    rendered_message.append_text(text, cx);
 859                }
 860            }
 861            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
 862                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 863                    rendered_message.append_thinking(text, cx);
 864                }
 865            }
 866            ThreadEvent::MessageAdded(message_id) => {
 867                if let Some(message_segments) = self
 868                    .thread
 869                    .read(cx)
 870                    .message(*message_id)
 871                    .map(|message| message.segments.clone())
 872                {
 873                    self.push_message(message_id, &message_segments, window, cx);
 874                }
 875
 876                self.save_thread(cx);
 877                cx.notify();
 878            }
 879            ThreadEvent::MessageEdited(message_id) => {
 880                if let Some(message_segments) = self
 881                    .thread
 882                    .read(cx)
 883                    .message(*message_id)
 884                    .map(|message| message.segments.clone())
 885                {
 886                    self.edited_message(message_id, &message_segments, window, cx);
 887                }
 888
 889                self.save_thread(cx);
 890                cx.notify();
 891            }
 892            ThreadEvent::MessageDeleted(message_id) => {
 893                self.deleted_message(message_id);
 894                self.save_thread(cx);
 895                cx.notify();
 896            }
 897            ThreadEvent::UsePendingTools { tool_uses } => {
 898                for tool_use in tool_uses {
 899                    self.render_tool_use_markdown(
 900                        tool_use.id.clone(),
 901                        tool_use.ui_text.clone(),
 902                        &tool_use.input,
 903                        "".into(),
 904                        cx,
 905                    );
 906                }
 907            }
 908            ThreadEvent::ToolFinished {
 909                pending_tool_use, ..
 910            } => {
 911                if let Some(tool_use) = pending_tool_use {
 912                    self.render_tool_use_markdown(
 913                        tool_use.id.clone(),
 914                        tool_use.ui_text.clone(),
 915                        &tool_use.input,
 916                        self.thread
 917                            .read(cx)
 918                            .tool_result(&tool_use.id)
 919                            .map(|result| result.content.clone().into())
 920                            .unwrap_or("".into()),
 921                        cx,
 922                    );
 923                }
 924            }
 925            ThreadEvent::CheckpointChanged => cx.notify(),
 926        }
 927    }
 928
 929    fn handle_rules_loading_error(
 930        &mut self,
 931        _thread_store: Entity<ThreadStore>,
 932        error: &RulesLoadingError,
 933        cx: &mut Context<Self>,
 934    ) {
 935        self.last_error = Some(ThreadError::Message {
 936            header: "Error loading rules file".into(),
 937            message: error.message.clone(),
 938        });
 939        cx.notify();
 940    }
 941
 942    fn show_notification(
 943        &mut self,
 944        caption: impl Into<SharedString>,
 945        icon: IconName,
 946        window: &mut Window,
 947        cx: &mut Context<ActiveThread>,
 948    ) {
 949        if window.is_window_active() || !self.notifications.is_empty() {
 950            return;
 951        }
 952
 953        let title = self
 954            .thread
 955            .read(cx)
 956            .summary()
 957            .unwrap_or("Agent Panel".into());
 958
 959        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
 960            NotifyWhenAgentWaiting::PrimaryScreen => {
 961                if let Some(primary) = cx.primary_display() {
 962                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
 963                }
 964            }
 965            NotifyWhenAgentWaiting::AllScreens => {
 966                let caption = caption.into();
 967                for screen in cx.displays() {
 968                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
 969                }
 970            }
 971            NotifyWhenAgentWaiting::Never => {
 972                // Don't show anything
 973            }
 974        }
 975    }
 976
 977    fn pop_up(
 978        &mut self,
 979        icon: IconName,
 980        caption: SharedString,
 981        title: SharedString,
 982        window: &mut Window,
 983        screen: Rc<dyn PlatformDisplay>,
 984        cx: &mut Context<'_, ActiveThread>,
 985    ) {
 986        let options = AgentNotification::window_options(screen, cx);
 987
 988        if let Some(screen_window) = cx
 989            .open_window(options, |_, cx| {
 990                cx.new(|_| AgentNotification::new(title.clone(), caption.clone(), icon))
 991            })
 992            .log_err()
 993        {
 994            if let Some(pop_up) = screen_window.entity(cx).log_err() {
 995                self.notification_subscriptions
 996                    .entry(screen_window)
 997                    .or_insert_with(Vec::new)
 998                    .push(cx.subscribe_in(&pop_up, window, {
 999                        |this, _, event, window, cx| match event {
1000                            AgentNotificationEvent::Accepted => {
1001                                let handle = window.window_handle();
1002                                cx.activate(true);
1003
1004                                let workspace_handle = this.workspace.clone();
1005
1006                                // If there are multiple Zed windows, activate the correct one.
1007                                cx.defer(move |cx| {
1008                                    handle
1009                                        .update(cx, |_view, window, _cx| {
1010                                            window.activate_window();
1011
1012                                            if let Some(workspace) = workspace_handle.upgrade() {
1013                                                workspace.update(_cx, |workspace, cx| {
1014                                                    workspace
1015                                                        .focus_panel::<AssistantPanel>(window, cx);
1016                                                });
1017                                            }
1018                                        })
1019                                        .log_err();
1020                                });
1021
1022                                this.dismiss_notifications(cx);
1023                            }
1024                            AgentNotificationEvent::Dismissed => {
1025                                this.dismiss_notifications(cx);
1026                            }
1027                        }
1028                    }));
1029
1030                self.notifications.push(screen_window);
1031
1032                // If the user manually refocuses the original window, dismiss the popup.
1033                self.notification_subscriptions
1034                    .entry(screen_window)
1035                    .or_insert_with(Vec::new)
1036                    .push({
1037                        let pop_up_weak = pop_up.downgrade();
1038
1039                        cx.observe_window_activation(window, move |_, window, cx| {
1040                            if window.is_window_active() {
1041                                if let Some(pop_up) = pop_up_weak.upgrade() {
1042                                    pop_up.update(cx, |_, cx| {
1043                                        cx.emit(AgentNotificationEvent::Dismissed);
1044                                    });
1045                                }
1046                            }
1047                        })
1048                    });
1049            }
1050        }
1051    }
1052
1053    /// Spawns a task to save the active thread.
1054    ///
1055    /// Only one task to save the thread will be in flight at a time.
1056    fn save_thread(&mut self, cx: &mut Context<Self>) {
1057        let thread = self.thread.clone();
1058        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1059            let task = this
1060                .update(cx, |this, cx| {
1061                    this.thread_store
1062                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1063                })
1064                .ok();
1065
1066            if let Some(task) = task {
1067                task.await.log_err();
1068            }
1069        }));
1070    }
1071
1072    fn start_editing_message(
1073        &mut self,
1074        message_id: MessageId,
1075        message_segments: &[MessageSegment],
1076        window: &mut Window,
1077        cx: &mut Context<Self>,
1078    ) {
1079        // User message should always consist of a single text segment,
1080        // therefore we can skip returning early if it's not a text segment.
1081        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1082            return;
1083        };
1084
1085        let buffer = cx.new(|cx| {
1086            MultiBuffer::singleton(cx.new(|cx| Buffer::local(message_text.clone(), cx)), cx)
1087        });
1088        let editor = cx.new(|cx| {
1089            let mut editor = Editor::new(
1090                editor::EditorMode::AutoHeight { max_lines: 8 },
1091                buffer,
1092                None,
1093                window,
1094                cx,
1095            );
1096            editor.focus_handle(cx).focus(window);
1097            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1098            editor
1099        });
1100        self.editing_message = Some((
1101            message_id,
1102            EditMessageState {
1103                editor: editor.clone(),
1104            },
1105        ));
1106        cx.notify();
1107    }
1108
1109    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1110        self.editing_message.take();
1111        cx.notify();
1112    }
1113
1114    fn confirm_editing_message(
1115        &mut self,
1116        _: &menu::Confirm,
1117        _: &mut Window,
1118        cx: &mut Context<Self>,
1119    ) {
1120        let Some((message_id, state)) = self.editing_message.take() else {
1121            return;
1122        };
1123        let edited_text = state.editor.read(cx).text(cx);
1124        self.thread.update(cx, |thread, cx| {
1125            thread.edit_message(
1126                message_id,
1127                Role::User,
1128                vec![MessageSegment::Text(edited_text)],
1129                cx,
1130            );
1131            for message_id in self.messages_after(message_id) {
1132                thread.delete_message(*message_id, cx);
1133            }
1134        });
1135
1136        let Some(model) = LanguageModelRegistry::read_global(cx).default_model() else {
1137            return;
1138        };
1139
1140        if model.provider.must_accept_terms(cx) {
1141            cx.notify();
1142            return;
1143        }
1144
1145        self.thread.update(cx, |thread, cx| {
1146            thread.send_to_model(model.model, RequestKind::Chat, cx)
1147        });
1148        cx.notify();
1149    }
1150
1151    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1152        self.messages
1153            .iter()
1154            .position(|id| *id == message_id)
1155            .map(|index| &self.messages[index + 1..])
1156            .unwrap_or(&[])
1157    }
1158
1159    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1160        self.cancel_editing_message(&menu::Cancel, window, cx);
1161    }
1162
1163    fn handle_regenerate_click(
1164        &mut self,
1165        _: &ClickEvent,
1166        window: &mut Window,
1167        cx: &mut Context<Self>,
1168    ) {
1169        self.confirm_editing_message(&menu::Confirm, window, cx);
1170    }
1171
1172    fn handle_feedback_click(
1173        &mut self,
1174        message_id: MessageId,
1175        feedback: ThreadFeedback,
1176        window: &mut Window,
1177        cx: &mut Context<Self>,
1178    ) {
1179        let report = self.thread.update(cx, |thread, cx| {
1180            thread.report_message_feedback(message_id, feedback, cx)
1181        });
1182
1183        cx.spawn(async move |this, cx| {
1184            report.await?;
1185            this.update(cx, |_this, cx| cx.notify())
1186        })
1187        .detach_and_log_err(cx);
1188
1189        match feedback {
1190            ThreadFeedback::Positive => {
1191                self.open_feedback_editors.remove(&message_id);
1192            }
1193            ThreadFeedback::Negative => {
1194                self.handle_show_feedback_comments(message_id, window, cx);
1195            }
1196        }
1197    }
1198
1199    fn handle_show_feedback_comments(
1200        &mut self,
1201        message_id: MessageId,
1202        window: &mut Window,
1203        cx: &mut Context<Self>,
1204    ) {
1205        let buffer = cx.new(|cx| {
1206            let empty_string = String::new();
1207            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1208        });
1209
1210        let editor = cx.new(|cx| {
1211            let mut editor = Editor::new(
1212                editor::EditorMode::AutoHeight { max_lines: 4 },
1213                buffer,
1214                None,
1215                window,
1216                cx,
1217            );
1218            editor.set_placeholder_text(
1219                "What went wrong? Share your feedback so we can improve.",
1220                cx,
1221            );
1222            editor
1223        });
1224
1225        editor.read(cx).focus_handle(cx).focus(window);
1226        self.open_feedback_editors.insert(message_id, editor);
1227        cx.notify();
1228    }
1229
1230    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1231        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1232            return;
1233        };
1234
1235        let report_task = self.thread.update(cx, |thread, cx| {
1236            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1237        });
1238
1239        let comments = editor.read(cx).text(cx);
1240        if !comments.is_empty() {
1241            let thread_id = self.thread.read(cx).id().clone();
1242            let comments_value = String::from(comments.as_str());
1243
1244            let message_content = self
1245                .thread
1246                .read(cx)
1247                .message(message_id)
1248                .map(|msg| msg.to_string())
1249                .unwrap_or_default();
1250
1251            telemetry::event!(
1252                "Assistant Thread Feedback Comments",
1253                thread_id,
1254                message_id = message_id.0,
1255                message_content,
1256                comments = comments_value
1257            );
1258
1259            self.open_feedback_editors.remove(&message_id);
1260
1261            cx.spawn(async move |this, cx| {
1262                report_task.await?;
1263                this.update(cx, |_this, cx| cx.notify())
1264            })
1265            .detach_and_log_err(cx);
1266        }
1267    }
1268
1269    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1270        let message_id = self.messages[ix];
1271        let Some(message) = self.thread.read(cx).message(message_id) else {
1272            return Empty.into_any();
1273        };
1274
1275        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1276            return Empty.into_any();
1277        };
1278
1279        let context_store = self.context_store.clone();
1280        let workspace = self.workspace.clone();
1281        let thread = self.thread.read(cx);
1282
1283        // Get all the data we need from thread before we start using it in closures
1284        let checkpoint = thread.checkpoint_for_message(message_id);
1285        let context = thread.context_for_message(message_id).collect::<Vec<_>>();
1286
1287        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1288        let has_tool_uses = !tool_uses.is_empty();
1289        let is_generating = thread.is_generating();
1290
1291        let is_first_message = ix == 0;
1292        let is_last_message = ix == self.messages.len() - 1;
1293
1294        let show_feedback = (!is_generating && is_last_message && message.role != Role::User)
1295            || self.messages.get(ix + 1).map_or(false, |next_id| {
1296                self.thread
1297                    .read(cx)
1298                    .message(*next_id)
1299                    .map_or(false, |next_message| {
1300                        next_message.role == Role::User
1301                            && thread.tool_uses_for_message(*next_id, cx).is_empty()
1302                            && thread.tool_results_for_message(*next_id).is_empty()
1303                    })
1304            });
1305
1306        let needs_confirmation = tool_uses.iter().any(|tool_use| tool_use.needs_confirmation);
1307
1308        let generating_label = (is_generating && is_last_message).then(|| {
1309            Label::new("Generating")
1310                .color(Color::Muted)
1311                .size(LabelSize::Small)
1312                .with_animations(
1313                    "generating-label",
1314                    vec![
1315                        Animation::new(Duration::from_secs(1)),
1316                        Animation::new(Duration::from_secs(1)).repeat(),
1317                    ],
1318                    |mut label, animation_ix, delta| {
1319                        match animation_ix {
1320                            0 => {
1321                                let chars_to_show = (delta * 10.).ceil() as usize;
1322                                let text = &"Generating"[0..chars_to_show];
1323                                label.set_text(text);
1324                            }
1325                            1 => {
1326                                let text = match delta {
1327                                    d if d < 0.25 => "Generating",
1328                                    d if d < 0.5 => "Generating.",
1329                                    d if d < 0.75 => "Generating..",
1330                                    _ => "Generating...",
1331                                };
1332                                label.set_text(text);
1333                            }
1334                            _ => {}
1335                        }
1336                        label
1337                    },
1338                )
1339                .with_animation(
1340                    "pulsating-label",
1341                    Animation::new(Duration::from_secs(2))
1342                        .repeat()
1343                        .with_easing(pulsating_between(0.6, 1.)),
1344                    |label, delta| label.map_element(|label| label.alpha(delta)),
1345                )
1346        });
1347
1348        // Don't render user messages that are just there for returning tool results.
1349        if message.role == Role::User && thread.message_has_tool_results(message_id) {
1350            if let Some(generating_label) = generating_label {
1351                return h_flex()
1352                    .w_full()
1353                    .h_10()
1354                    .py_1p5()
1355                    .pl_4()
1356                    .pb_3()
1357                    .child(generating_label)
1358                    .into_any_element();
1359            }
1360
1361            return Empty.into_any();
1362        }
1363
1364        let allow_editing_message = message.role == Role::User;
1365
1366        let edit_message_editor = self
1367            .editing_message
1368            .as_ref()
1369            .filter(|(id, _)| *id == message_id)
1370            .map(|(_, state)| state.editor.clone());
1371
1372        let colors = cx.theme().colors();
1373        let active_color = colors.element_active;
1374        let editor_bg_color = colors.editor_background;
1375        let bg_user_message_header = editor_bg_color.blend(active_color.opacity(0.25));
1376
1377        let open_as_markdown = IconButton::new("open-as-markdown", IconName::FileCode)
1378            .shape(ui::IconButtonShape::Square)
1379            .icon_size(IconSize::XSmall)
1380            .icon_color(Color::Ignored)
1381            .tooltip(Tooltip::text("Open Thread as Markdown"))
1382            .on_click(|_event, window, cx| {
1383                window.dispatch_action(Box::new(OpenActiveThreadAsMarkdown), cx)
1384            });
1385
1386        let feedback_container = h_flex().py_2().px_4().gap_1().justify_between();
1387        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1388            Some(feedback) => feedback_container
1389                .child(
1390                    Label::new(match feedback {
1391                        ThreadFeedback::Positive => "Thanks for your feedback!",
1392                        ThreadFeedback::Negative => {
1393                            "We appreciate your feedback and will use it to improve."
1394                        }
1395                    })
1396                    .color(Color::Muted)
1397                    .size(LabelSize::XSmall),
1398                )
1399                .child(
1400                    h_flex()
1401                        .pr_1()
1402                        .gap_1()
1403                        .child(
1404                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1405                                .shape(ui::IconButtonShape::Square)
1406                                .icon_size(IconSize::XSmall)
1407                                .icon_color(match feedback {
1408                                    ThreadFeedback::Positive => Color::Accent,
1409                                    ThreadFeedback::Negative => Color::Ignored,
1410                                })
1411                                .tooltip(Tooltip::text("Helpful Response"))
1412                                .on_click(cx.listener(move |this, _, window, cx| {
1413                                    this.handle_feedback_click(
1414                                        message_id,
1415                                        ThreadFeedback::Positive,
1416                                        window,
1417                                        cx,
1418                                    );
1419                                })),
1420                        )
1421                        .child(
1422                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1423                                .shape(ui::IconButtonShape::Square)
1424                                .icon_size(IconSize::XSmall)
1425                                .icon_color(match feedback {
1426                                    ThreadFeedback::Positive => Color::Ignored,
1427                                    ThreadFeedback::Negative => Color::Accent,
1428                                })
1429                                .tooltip(Tooltip::text("Not Helpful"))
1430                                .on_click(cx.listener(move |this, _, window, cx| {
1431                                    this.handle_feedback_click(
1432                                        message_id,
1433                                        ThreadFeedback::Negative,
1434                                        window,
1435                                        cx,
1436                                    );
1437                                })),
1438                        )
1439                        .child(open_as_markdown),
1440                )
1441                .into_any_element(),
1442            None => feedback_container
1443                .child(
1444                    Label::new(
1445                        "Rating the thread sends all of your current conversation to the Zed team.",
1446                    )
1447                    .color(Color::Muted)
1448                    .size(LabelSize::XSmall),
1449                )
1450                .child(
1451                    h_flex()
1452                        .pr_1()
1453                        .gap_1()
1454                        .child(
1455                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1456                                .icon_size(IconSize::XSmall)
1457                                .icon_color(Color::Ignored)
1458                                .shape(ui::IconButtonShape::Square)
1459                                .tooltip(Tooltip::text("Helpful Response"))
1460                                .on_click(cx.listener(move |this, _, window, cx| {
1461                                    this.handle_feedback_click(
1462                                        message_id,
1463                                        ThreadFeedback::Positive,
1464                                        window,
1465                                        cx,
1466                                    );
1467                                })),
1468                        )
1469                        .child(
1470                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1471                                .icon_size(IconSize::XSmall)
1472                                .icon_color(Color::Ignored)
1473                                .shape(ui::IconButtonShape::Square)
1474                                .tooltip(Tooltip::text("Not Helpful"))
1475                                .on_click(cx.listener(move |this, _, window, cx| {
1476                                    this.handle_feedback_click(
1477                                        message_id,
1478                                        ThreadFeedback::Negative,
1479                                        window,
1480                                        cx,
1481                                    );
1482                                })),
1483                        )
1484                        .child(open_as_markdown),
1485                )
1486                .into_any_element(),
1487        };
1488
1489        let message_is_empty = message.should_display_content();
1490        let has_content = !message_is_empty || !context.is_empty();
1491
1492        let message_content =
1493            has_content.then(|| {
1494                v_flex()
1495                    .gap_1p5()
1496                    .when(!message_is_empty, |parent| {
1497                        parent.child(
1498                            if let Some(edit_message_editor) = edit_message_editor.clone() {
1499                                div()
1500                                    .key_context("EditMessageEditor")
1501                                    .on_action(cx.listener(Self::cancel_editing_message))
1502                                    .on_action(cx.listener(Self::confirm_editing_message))
1503                                    .min_h_6()
1504                                    .child(edit_message_editor)
1505                                    .into_any()
1506                            } else {
1507                                div()
1508                                    .min_h_6()
1509                                    .text_ui(cx)
1510                                    .child(self.render_message_content(
1511                                        message_id,
1512                                        rendered_message,
1513                                        has_tool_uses,
1514                                        workspace.clone(),
1515                                        window,
1516                                        cx,
1517                                    ))
1518                                    .into_any()
1519                            },
1520                        )
1521                    })
1522                    .when(!context.is_empty(), |parent| {
1523                        parent.child(h_flex().flex_wrap().gap_1().children(
1524                            context.into_iter().map(|context| {
1525                                let context_id = context.id();
1526                                ContextPill::added(
1527                                    AddedContext::new(context, cx),
1528                                    false,
1529                                    false,
1530                                    None,
1531                                )
1532                                .on_click(Rc::new(cx.listener({
1533                                    let workspace = workspace.clone();
1534                                    let context_store = context_store.clone();
1535                                    move |_, _, window, cx| {
1536                                        if let Some(workspace) = workspace.upgrade() {
1537                                            open_context(
1538                                                context_id,
1539                                                context_store.clone(),
1540                                                workspace,
1541                                                window,
1542                                                cx,
1543                                            );
1544                                            cx.notify();
1545                                        }
1546                                    }
1547                                })))
1548                            }),
1549                        ))
1550                    })
1551            });
1552
1553        let styled_message = match message.role {
1554            Role::User => v_flex()
1555                .id(("message-container", ix))
1556                .map(|this| {
1557                    if is_first_message {
1558                        this.pt_2()
1559                    } else {
1560                        this.pt_4()
1561                    }
1562                })
1563                .pb_4()
1564                .pl_2()
1565                .pr_2p5()
1566                .child(
1567                    v_flex()
1568                        .bg(colors.editor_background)
1569                        .rounded_lg()
1570                        .border_1()
1571                        .border_color(colors.border)
1572                        .shadow_md()
1573                        .child(
1574                            h_flex()
1575                                .py_1()
1576                                .pl_2()
1577                                .pr_1()
1578                                .bg(bg_user_message_header)
1579                                .border_b_1()
1580                                .border_color(colors.border)
1581                                .justify_between()
1582                                .rounded_t_md()
1583                                .child(
1584                                    h_flex()
1585                                        .gap_1p5()
1586                                        .child(
1587                                            Icon::new(IconName::PersonCircle)
1588                                                .size(IconSize::XSmall)
1589                                                .color(Color::Muted),
1590                                        )
1591                                        .child(
1592                                            Label::new("You")
1593                                                .size(LabelSize::Small)
1594                                                .color(Color::Muted),
1595                                        ),
1596                                )
1597                                .child(
1598                                    h_flex()
1599                                        .gap_1()
1600                                        .when_some(
1601                                            edit_message_editor.clone(),
1602                                            |this, edit_message_editor| {
1603                                                let focus_handle =
1604                                                    edit_message_editor.focus_handle(cx);
1605                                                this.child(
1606                                                    Button::new("cancel-edit-message", "Cancel")
1607                                                        .label_size(LabelSize::Small)
1608                                                        .key_binding(
1609                                                            KeyBinding::for_action_in(
1610                                                                &menu::Cancel,
1611                                                                &focus_handle,
1612                                                                window,
1613                                                                cx,
1614                                                            )
1615                                                            .map(|kb| kb.size(rems_from_px(12.))),
1616                                                        )
1617                                                        .on_click(
1618                                                            cx.listener(Self::handle_cancel_click),
1619                                                        ),
1620                                                )
1621                                                .child(
1622                                                    Button::new(
1623                                                        "confirm-edit-message",
1624                                                        "Regenerate",
1625                                                    )
1626                                                    .label_size(LabelSize::Small)
1627                                                    .key_binding(
1628                                                        KeyBinding::for_action_in(
1629                                                            &menu::Confirm,
1630                                                            &focus_handle,
1631                                                            window,
1632                                                            cx,
1633                                                        )
1634                                                        .map(|kb| kb.size(rems_from_px(12.))),
1635                                                    )
1636                                                    .on_click(
1637                                                        cx.listener(Self::handle_regenerate_click),
1638                                                    ),
1639                                                )
1640                                            },
1641                                        )
1642                                        .when(
1643                                            edit_message_editor.is_none() && allow_editing_message,
1644                                            |this| {
1645                                                this.child(
1646                                                    Button::new("edit-message", "Edit")
1647                                                        .label_size(LabelSize::Small)
1648                                                        .on_click(cx.listener({
1649                                                            let message_segments =
1650                                                                message.segments.clone();
1651                                                            move |this, _, window, cx| {
1652                                                                this.start_editing_message(
1653                                                                    message_id,
1654                                                                    &message_segments,
1655                                                                    window,
1656                                                                    cx,
1657                                                                );
1658                                                            }
1659                                                        })),
1660                                                )
1661                                            },
1662                                        ),
1663                                ),
1664                        )
1665                        .child(div().p_2().children(message_content)),
1666                ),
1667            Role::Assistant => v_flex()
1668                .id(("message-container", ix))
1669                .ml_2()
1670                .pl_2()
1671                .pr_4()
1672                .border_l_1()
1673                .border_color(cx.theme().colors().border_variant)
1674                .children(message_content)
1675                .when(has_tool_uses, |parent| {
1676                    parent.children(
1677                        tool_uses
1678                            .into_iter()
1679                            .map(|tool_use| self.render_tool_use(tool_use, window, cx)),
1680                    )
1681                }),
1682            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
1683                v_flex()
1684                    .bg(colors.editor_background)
1685                    .rounded_sm()
1686                    .child(div().p_4().children(message_content)),
1687            ),
1688        };
1689
1690        v_flex()
1691            .w_full()
1692            .when_some(checkpoint, |parent, checkpoint| {
1693                let mut is_pending = false;
1694                let mut error = None;
1695                if let Some(last_restore_checkpoint) =
1696                    self.thread.read(cx).last_restore_checkpoint()
1697                {
1698                    if last_restore_checkpoint.message_id() == message_id {
1699                        match last_restore_checkpoint {
1700                            LastRestoreCheckpoint::Pending { .. } => is_pending = true,
1701                            LastRestoreCheckpoint::Error { error: err, .. } => {
1702                                error = Some(err.clone());
1703                            }
1704                        }
1705                    }
1706                }
1707
1708                let restore_checkpoint_button =
1709                    Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
1710                        .icon(if error.is_some() {
1711                            IconName::XCircle
1712                        } else {
1713                            IconName::Undo
1714                        })
1715                        .icon_size(IconSize::XSmall)
1716                        .icon_position(IconPosition::Start)
1717                        .icon_color(if error.is_some() {
1718                            Some(Color::Error)
1719                        } else {
1720                            None
1721                        })
1722                        .label_size(LabelSize::XSmall)
1723                        .disabled(is_pending)
1724                        .on_click(cx.listener(move |this, _, _window, cx| {
1725                            this.thread.update(cx, |thread, cx| {
1726                                thread
1727                                    .restore_checkpoint(checkpoint.clone(), cx)
1728                                    .detach_and_log_err(cx);
1729                            });
1730                        }));
1731
1732                let restore_checkpoint_button = if is_pending {
1733                    restore_checkpoint_button
1734                        .with_animation(
1735                            ("pulsating-restore-checkpoint-button", ix),
1736                            Animation::new(Duration::from_secs(2))
1737                                .repeat()
1738                                .with_easing(pulsating_between(0.6, 1.)),
1739                            |label, delta| label.alpha(delta),
1740                        )
1741                        .into_any_element()
1742                } else if let Some(error) = error {
1743                    restore_checkpoint_button
1744                        .tooltip(Tooltip::text(error.to_string()))
1745                        .into_any_element()
1746                } else {
1747                    restore_checkpoint_button.into_any_element()
1748                };
1749
1750                parent.child(
1751                    h_flex()
1752                        .pt_2p5()
1753                        .px_2p5()
1754                        .w_full()
1755                        .gap_1()
1756                        .child(ui::Divider::horizontal())
1757                        .child(restore_checkpoint_button)
1758                        .child(ui::Divider::horizontal()),
1759                )
1760            })
1761            .when(is_first_message, |parent| {
1762                parent.child(self.render_rules_item(cx))
1763            })
1764            .child(styled_message)
1765            .when(!needs_confirmation && generating_label.is_some(), |this| {
1766                this.child(
1767                    h_flex()
1768                        .h_8()
1769                        .mt_2()
1770                        .mb_4()
1771                        .ml_4()
1772                        .py_1p5()
1773                        .child(generating_label.unwrap()),
1774                )
1775            })
1776            .when(show_feedback, move |parent| {
1777                parent.child(feedback_items).when_some(
1778                    self.open_feedback_editors.get(&message_id),
1779                    move |parent, feedback_editor| {
1780                        let focus_handle = feedback_editor.focus_handle(cx);
1781                        parent.child(
1782                            v_flex()
1783                                .key_context("AgentFeedbackMessageEditor")
1784                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
1785                                    this.open_feedback_editors.remove(&message_id);
1786                                    cx.notify();
1787                                }))
1788                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
1789                                    this.submit_feedback_message(message_id, cx);
1790                                    cx.notify();
1791                                }))
1792                                .on_action(cx.listener(Self::confirm_editing_message))
1793                                .mb_2()
1794                                .mx_4()
1795                                .p_2()
1796                                .rounded_md()
1797                                .border_1()
1798                                .border_color(cx.theme().colors().border)
1799                                .bg(cx.theme().colors().editor_background)
1800                                .child(feedback_editor.clone())
1801                                .child(
1802                                    h_flex()
1803                                        .gap_1()
1804                                        .justify_end()
1805                                        .child(
1806                                            Button::new("dismiss-feedback-message", "Cancel")
1807                                                .label_size(LabelSize::Small)
1808                                                .key_binding(
1809                                                    KeyBinding::for_action_in(
1810                                                        &menu::Cancel,
1811                                                        &focus_handle,
1812                                                        window,
1813                                                        cx,
1814                                                    )
1815                                                    .map(|kb| kb.size(rems_from_px(10.))),
1816                                                )
1817                                                .on_click(cx.listener(
1818                                                    move |this, _, _window, cx| {
1819                                                        this.open_feedback_editors
1820                                                            .remove(&message_id);
1821                                                        cx.notify();
1822                                                    },
1823                                                )),
1824                                        )
1825                                        .child(
1826                                            Button::new(
1827                                                "submit-feedback-message",
1828                                                "Share Feedback",
1829                                            )
1830                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
1831                                            .label_size(LabelSize::Small)
1832                                            .key_binding(
1833                                                KeyBinding::for_action_in(
1834                                                    &menu::Confirm,
1835                                                    &focus_handle,
1836                                                    window,
1837                                                    cx,
1838                                                )
1839                                                .map(|kb| kb.size(rems_from_px(10.))),
1840                                            )
1841                                            .on_click(
1842                                                cx.listener(move |this, _, _window, cx| {
1843                                                    this.submit_feedback_message(message_id, cx);
1844                                                    cx.notify()
1845                                                }),
1846                                            ),
1847                                        ),
1848                                ),
1849                        )
1850                    },
1851                )
1852            })
1853            .into_any()
1854    }
1855
1856    fn render_message_content(
1857        &self,
1858        message_id: MessageId,
1859        rendered_message: &RenderedMessage,
1860        has_tool_uses: bool,
1861        workspace: WeakEntity<Workspace>,
1862        window: &Window,
1863        cx: &Context<Self>,
1864    ) -> impl IntoElement {
1865        let is_last_message = self.messages.last() == Some(&message_id);
1866        let is_generating = self.thread.read(cx).is_generating();
1867        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
1868            rendered_message
1869                .segments
1870                .iter()
1871                .enumerate()
1872                .next_back()
1873                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
1874                .map(|(index, _)| index)
1875        } else {
1876            None
1877        };
1878
1879        v_flex()
1880            .text_ui(cx)
1881            .gap_2()
1882            .children(
1883                rendered_message.segments.iter().enumerate().map(
1884                    |(index, segment)| match segment {
1885                        RenderedMessageSegment::Thinking {
1886                            content,
1887                            scroll_handle,
1888                        } => self
1889                            .render_message_thinking_segment(
1890                                message_id,
1891                                index,
1892                                content.clone(),
1893                                &scroll_handle,
1894                                Some(index) == pending_thinking_segment_index,
1895                                window,
1896                                cx,
1897                            )
1898                            .into_any_element(),
1899                        RenderedMessageSegment::Text(markdown) => div()
1900                            .child(
1901                                MarkdownElement::new(
1902                                    markdown.clone(),
1903                                    default_markdown_style(window, cx),
1904                                )
1905                                .code_block_renderer(markdown::CodeBlockRenderer::Custom {
1906                                    render: Arc::new({
1907                                        let workspace = workspace.clone();
1908                                        let active_thread = cx.entity();
1909                                        move |kind, parsed_markdown, range, metadata, window, cx| {
1910                                            render_markdown_code_block(
1911                                                message_id,
1912                                                range.start,
1913                                                kind,
1914                                                parsed_markdown,
1915                                                metadata,
1916                                                active_thread.clone(),
1917                                                workspace.clone(),
1918                                                window,
1919                                                cx,
1920                                            )
1921                                        }
1922                                    }),
1923                                    transform: Some(Arc::new({
1924                                        let active_thread = cx.entity();
1925                                        move |el, range, metadata, _, cx| {
1926                                            let is_expanded = active_thread
1927                                                .read(cx)
1928                                                .expanded_code_blocks
1929                                                .get(&(message_id, range.start))
1930                                                .copied()
1931                                                .unwrap_or(false);
1932
1933                                            if is_expanded
1934                                                || metadata.line_count
1935                                                    <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
1936                                            {
1937                                                return el;
1938                                            }
1939                                            el.child(
1940                                                div()
1941                                                    .absolute()
1942                                                    .bottom_0()
1943                                                    .left_0()
1944                                                    .w_full()
1945                                                    .h_1_4()
1946                                                    .rounded_b_lg()
1947                                                    .bg(gpui::linear_gradient(
1948                                                        0.,
1949                                                        gpui::linear_color_stop(
1950                                                            cx.theme().colors().editor_background,
1951                                                            0.,
1952                                                        ),
1953                                                        gpui::linear_color_stop(
1954                                                            cx.theme()
1955                                                                .colors()
1956                                                                .editor_background
1957                                                                .opacity(0.),
1958                                                            1.,
1959                                                        ),
1960                                                    )),
1961                                            )
1962                                        }
1963                                    })),
1964                                })
1965                                .on_url_click({
1966                                    let workspace = self.workspace.clone();
1967                                    move |text, window, cx| {
1968                                        open_markdown_link(text, workspace.clone(), window, cx);
1969                                    }
1970                                }),
1971                            )
1972                            .into_any_element(),
1973                    },
1974                ),
1975            )
1976    }
1977
1978    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
1979        cx.theme().colors().border.opacity(0.5)
1980    }
1981
1982    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
1983        cx.theme()
1984            .colors()
1985            .element_background
1986            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
1987    }
1988
1989    fn render_message_thinking_segment(
1990        &self,
1991        message_id: MessageId,
1992        ix: usize,
1993        markdown: Entity<Markdown>,
1994        scroll_handle: &ScrollHandle,
1995        pending: bool,
1996        window: &Window,
1997        cx: &Context<Self>,
1998    ) -> impl IntoElement {
1999        let is_open = self
2000            .expanded_thinking_segments
2001            .get(&(message_id, ix))
2002            .copied()
2003            .unwrap_or_default();
2004
2005        let editor_bg = cx.theme().colors().panel_background;
2006
2007        div().map(|this| {
2008            if pending {
2009                this.v_flex()
2010                    .mt_neg_2()
2011                    .mb_1p5()
2012                    .child(
2013                        h_flex()
2014                            .group("disclosure-header")
2015                            .justify_between()
2016                            .child(
2017                                h_flex()
2018                                    .gap_1p5()
2019                                    .child(
2020                                        Icon::new(IconName::LightBulb)
2021                                            .size(IconSize::XSmall)
2022                                            .color(Color::Muted),
2023                                    )
2024                                    .child({
2025                                        Label::new("Thinking")
2026                                            .color(Color::Muted)
2027                                            .size(LabelSize::Small)
2028                                            .with_animation(
2029                                                "generating-label",
2030                                                Animation::new(Duration::from_secs(1)).repeat(),
2031                                                |mut label, delta| {
2032                                                    let text = match delta {
2033                                                        d if d < 0.25 => "Thinking",
2034                                                        d if d < 0.5 => "Thinking.",
2035                                                        d if d < 0.75 => "Thinking..",
2036                                                        _ => "Thinking...",
2037                                                    };
2038                                                    label.set_text(text);
2039                                                    label
2040                                                },
2041                                            )
2042                                            .with_animation(
2043                                                "pulsating-label",
2044                                                Animation::new(Duration::from_secs(2))
2045                                                    .repeat()
2046                                                    .with_easing(pulsating_between(0.6, 1.)),
2047                                                |label, delta| {
2048                                                    label.map_element(|label| label.alpha(delta))
2049                                                },
2050                                            )
2051                                    }),
2052                            )
2053                            .child(
2054                                h_flex()
2055                                    .gap_1()
2056                                    .child(
2057                                        div().visible_on_hover("disclosure-header").child(
2058                                            Disclosure::new("thinking-disclosure", is_open)
2059                                                .opened_icon(IconName::ChevronUp)
2060                                                .closed_icon(IconName::ChevronDown)
2061                                                .on_click(cx.listener({
2062                                                    move |this, _event, _window, _cx| {
2063                                                        let is_open = this
2064                                                            .expanded_thinking_segments
2065                                                            .entry((message_id, ix))
2066                                                            .or_insert(false);
2067
2068                                                        *is_open = !*is_open;
2069                                                    }
2070                                                })),
2071                                        ),
2072                                    )
2073                                    .child({
2074                                        Icon::new(IconName::ArrowCircle)
2075                                            .color(Color::Accent)
2076                                            .size(IconSize::Small)
2077                                            .with_animation(
2078                                                "arrow-circle",
2079                                                Animation::new(Duration::from_secs(2)).repeat(),
2080                                                |icon, delta| {
2081                                                    icon.transform(Transformation::rotate(
2082                                                        percentage(delta),
2083                                                    ))
2084                                                },
2085                                            )
2086                                    }),
2087                            ),
2088                    )
2089                    .when(!is_open, |this| {
2090                        let gradient_overlay = div()
2091                            .rounded_b_lg()
2092                            .h_full()
2093                            .absolute()
2094                            .w_full()
2095                            .bottom_0()
2096                            .left_0()
2097                            .bg(linear_gradient(
2098                                180.,
2099                                linear_color_stop(editor_bg, 1.),
2100                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2101                            ));
2102
2103                        this.child(
2104                            div()
2105                                .relative()
2106                                .bg(editor_bg)
2107                                .rounded_b_lg()
2108                                .mt_2()
2109                                .pl_4()
2110                                .child(
2111                                    div()
2112                                        .id(("thinking-content", ix))
2113                                        .max_h_20()
2114                                        .track_scroll(scroll_handle)
2115                                        .text_ui_sm(cx)
2116                                        .overflow_hidden()
2117                                        .child(
2118                                            MarkdownElement::new(
2119                                                markdown.clone(),
2120                                                default_markdown_style(window, cx),
2121                                            )
2122                                            .on_url_click({
2123                                                let workspace = self.workspace.clone();
2124                                                move |text, window, cx| {
2125                                                    open_markdown_link(
2126                                                        text,
2127                                                        workspace.clone(),
2128                                                        window,
2129                                                        cx,
2130                                                    );
2131                                                }
2132                                            }),
2133                                        ),
2134                                )
2135                                .child(gradient_overlay),
2136                        )
2137                    })
2138                    .when(is_open, |this| {
2139                        this.child(
2140                            div()
2141                                .id(("thinking-content", ix))
2142                                .h_full()
2143                                .bg(editor_bg)
2144                                .text_ui_sm(cx)
2145                                .child(
2146                                    MarkdownElement::new(
2147                                        markdown.clone(),
2148                                        default_markdown_style(window, cx),
2149                                    )
2150                                    .on_url_click({
2151                                        let workspace = self.workspace.clone();
2152                                        move |text, window, cx| {
2153                                            open_markdown_link(text, workspace.clone(), window, cx);
2154                                        }
2155                                    }),
2156                                ),
2157                        )
2158                    })
2159            } else {
2160                this.v_flex()
2161                    .mt_neg_2()
2162                    .child(
2163                        h_flex()
2164                            .group("disclosure-header")
2165                            .pr_1()
2166                            .justify_between()
2167                            .opacity(0.8)
2168                            .hover(|style| style.opacity(1.))
2169                            .child(
2170                                h_flex()
2171                                    .gap_1p5()
2172                                    .child(
2173                                        Icon::new(IconName::LightBulb)
2174                                            .size(IconSize::XSmall)
2175                                            .color(Color::Muted),
2176                                    )
2177                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2178                            )
2179                            .child(
2180                                div().visible_on_hover("disclosure-header").child(
2181                                    Disclosure::new("thinking-disclosure", is_open)
2182                                        .opened_icon(IconName::ChevronUp)
2183                                        .closed_icon(IconName::ChevronDown)
2184                                        .on_click(cx.listener({
2185                                            move |this, _event, _window, _cx| {
2186                                                let is_open = this
2187                                                    .expanded_thinking_segments
2188                                                    .entry((message_id, ix))
2189                                                    .or_insert(false);
2190
2191                                                *is_open = !*is_open;
2192                                            }
2193                                        })),
2194                                ),
2195                            ),
2196                    )
2197                    .child(
2198                        div()
2199                            .id(("thinking-content", ix))
2200                            .relative()
2201                            .mt_1p5()
2202                            .ml_1p5()
2203                            .pl_2p5()
2204                            .border_l_1()
2205                            .border_color(cx.theme().colors().border_variant)
2206                            .text_ui_sm(cx)
2207                            .when(is_open, |this| {
2208                                this.child(
2209                                    MarkdownElement::new(
2210                                        markdown.clone(),
2211                                        default_markdown_style(window, cx),
2212                                    )
2213                                    .on_url_click({
2214                                        let workspace = self.workspace.clone();
2215                                        move |text, window, cx| {
2216                                            open_markdown_link(text, workspace.clone(), window, cx);
2217                                        }
2218                                    }),
2219                                )
2220                            }),
2221                    )
2222            }
2223        })
2224    }
2225
2226    fn render_tool_use(
2227        &self,
2228        tool_use: ToolUse,
2229        window: &mut Window,
2230        cx: &mut Context<Self>,
2231    ) -> impl IntoElement + use<> {
2232        let is_open = self
2233            .expanded_tool_uses
2234            .get(&tool_use.id)
2235            .copied()
2236            .unwrap_or_default();
2237
2238        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2239
2240        let fs = self
2241            .workspace
2242            .upgrade()
2243            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2244        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2245        let edit_tools = tool_use.needs_confirmation;
2246
2247        let status_icons = div().child(match &tool_use.status {
2248            ToolUseStatus::Pending | ToolUseStatus::NeedsConfirmation => {
2249                let icon = Icon::new(IconName::Warning)
2250                    .color(Color::Warning)
2251                    .size(IconSize::Small);
2252                icon.into_any_element()
2253            }
2254            ToolUseStatus::Running => {
2255                let icon = Icon::new(IconName::ArrowCircle)
2256                    .color(Color::Accent)
2257                    .size(IconSize::Small);
2258                icon.with_animation(
2259                    "arrow-circle",
2260                    Animation::new(Duration::from_secs(2)).repeat(),
2261                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2262                )
2263                .into_any_element()
2264            }
2265            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2266            ToolUseStatus::Error(_) => {
2267                let icon = Icon::new(IconName::Close)
2268                    .color(Color::Error)
2269                    .size(IconSize::Small);
2270                icon.into_any_element()
2271            }
2272        });
2273
2274        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2275        let results_content_container = || v_flex().p_2().gap_0p5();
2276
2277        let results_content = v_flex()
2278            .gap_1()
2279            .child(
2280                results_content_container()
2281                    .child(
2282                        Label::new("Input")
2283                            .size(LabelSize::XSmall)
2284                            .color(Color::Muted)
2285                            .buffer_font(cx),
2286                    )
2287                    .child(
2288                        div()
2289                            .w_full()
2290                            .text_ui_sm(cx)
2291                            .children(rendered_tool_use.as_ref().map(|rendered| {
2292                                MarkdownElement::new(
2293                                    rendered.input.clone(),
2294                                    tool_use_markdown_style(window, cx),
2295                                )
2296                                .on_url_click({
2297                                    let workspace = self.workspace.clone();
2298                                    move |text, window, cx| {
2299                                        open_markdown_link(text, workspace.clone(), window, cx);
2300                                    }
2301                                })
2302                            })),
2303                    ),
2304            )
2305            .map(|container| match tool_use.status {
2306                ToolUseStatus::Finished(_) => container.child(
2307                    results_content_container()
2308                        .border_t_1()
2309                        .border_color(self.tool_card_border_color(cx))
2310                        .child(
2311                            Label::new("Result")
2312                                .size(LabelSize::XSmall)
2313                                .color(Color::Muted)
2314                                .buffer_font(cx),
2315                        )
2316                        .child(div().w_full().text_ui_sm(cx).children(
2317                            rendered_tool_use.as_ref().map(|rendered| {
2318                                MarkdownElement::new(
2319                                    rendered.output.clone(),
2320                                    tool_use_markdown_style(window, cx),
2321                                )
2322                                .on_url_click({
2323                                    let workspace = self.workspace.clone();
2324                                    move |text, window, cx| {
2325                                        open_markdown_link(text, workspace.clone(), window, cx);
2326                                    }
2327                                })
2328                            }),
2329                        )),
2330                ),
2331                ToolUseStatus::Running => container.child(
2332                    results_content_container().child(
2333                        h_flex()
2334                            .gap_1()
2335                            .pb_1()
2336                            .border_t_1()
2337                            .border_color(self.tool_card_border_color(cx))
2338                            .child(
2339                                Icon::new(IconName::ArrowCircle)
2340                                    .size(IconSize::Small)
2341                                    .color(Color::Accent)
2342                                    .with_animation(
2343                                        "arrow-circle",
2344                                        Animation::new(Duration::from_secs(2)).repeat(),
2345                                        |icon, delta| {
2346                                            icon.transform(Transformation::rotate(percentage(
2347                                                delta,
2348                                            )))
2349                                        },
2350                                    ),
2351                            )
2352                            .child(
2353                                Label::new("Running…")
2354                                    .size(LabelSize::XSmall)
2355                                    .color(Color::Muted)
2356                                    .buffer_font(cx),
2357                            ),
2358                    ),
2359                ),
2360                ToolUseStatus::Error(_) => container.child(
2361                    results_content_container()
2362                        .border_t_1()
2363                        .border_color(self.tool_card_border_color(cx))
2364                        .child(
2365                            Label::new("Error")
2366                                .size(LabelSize::XSmall)
2367                                .color(Color::Muted)
2368                                .buffer_font(cx),
2369                        )
2370                        .child(
2371                            div()
2372                                .text_ui_sm(cx)
2373                                .children(rendered_tool_use.as_ref().map(|rendered| {
2374                                    MarkdownElement::new(
2375                                        rendered.output.clone(),
2376                                        tool_use_markdown_style(window, cx),
2377                                    )
2378                                    .on_url_click({
2379                                        let workspace = self.workspace.clone();
2380                                        move |text, window, cx| {
2381                                            open_markdown_link(text, workspace.clone(), window, cx);
2382                                        }
2383                                    })
2384                                })),
2385                        ),
2386                ),
2387                ToolUseStatus::Pending => container,
2388                ToolUseStatus::NeedsConfirmation => container.child(
2389                    results_content_container()
2390                        .border_t_1()
2391                        .border_color(self.tool_card_border_color(cx))
2392                        .child(
2393                            Label::new("Asking Permission")
2394                                .size(LabelSize::Small)
2395                                .color(Color::Muted)
2396                                .buffer_font(cx),
2397                        ),
2398                ),
2399            });
2400
2401        let gradient_overlay = |color: Hsla| {
2402            div()
2403                .h_full()
2404                .absolute()
2405                .w_12()
2406                .bottom_0()
2407                .map(|element| {
2408                    if is_status_finished {
2409                        element.right_6()
2410                    } else {
2411                        element.right(px(44.))
2412                    }
2413                })
2414                .bg(linear_gradient(
2415                    90.,
2416                    linear_color_stop(color, 1.),
2417                    linear_color_stop(color.opacity(0.2), 0.),
2418                ))
2419        };
2420
2421        div().map(|element| {
2422            if !edit_tools {
2423                element.child(
2424                    v_flex()
2425                        .my_2()
2426                        .child(
2427                            h_flex()
2428                                .group("disclosure-header")
2429                                .relative()
2430                                .gap_1p5()
2431                                .justify_between()
2432                                .opacity(0.8)
2433                                .hover(|style| style.opacity(1.))
2434                                .when(!is_status_finished, |this| this.pr_2())
2435                                .child(
2436                                    h_flex()
2437                                        .id("tool-label-container")
2438                                        .gap_1p5()
2439                                        .max_w_full()
2440                                        .overflow_x_scroll()
2441                                        .child(
2442                                            Icon::new(tool_use.icon)
2443                                                .size(IconSize::XSmall)
2444                                                .color(Color::Muted),
2445                                        )
2446                                        .child(
2447                                            h_flex().pr_8().text_ui_sm(cx).children(
2448                                                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| {
2449                                                    open_markdown_link(text, workspace.clone(), window, cx);
2450                                                }}))
2451                                            ),
2452                                        ),
2453                                )
2454                                .child(
2455                                    h_flex()
2456                                        .gap_1()
2457                                        .child(
2458                                            div().visible_on_hover("disclosure-header").child(
2459                                                Disclosure::new("tool-use-disclosure", is_open)
2460                                                    .opened_icon(IconName::ChevronUp)
2461                                                    .closed_icon(IconName::ChevronDown)
2462                                                    .on_click(cx.listener({
2463                                                        let tool_use_id = tool_use.id.clone();
2464                                                        move |this, _event, _window, _cx| {
2465                                                            let is_open = this
2466                                                                .expanded_tool_uses
2467                                                                .entry(tool_use_id.clone())
2468                                                                .or_insert(false);
2469
2470                                                            *is_open = !*is_open;
2471                                                        }
2472                                                    })),
2473                                            ),
2474                                        )
2475                                        .child(status_icons),
2476                                )
2477                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2478                        )
2479                        .map(|parent| {
2480                            if !is_open {
2481                                return parent;
2482                            }
2483
2484                            parent.child(
2485                                v_flex()
2486                                    .mt_1()
2487                                    .border_1()
2488                                    .border_color(self.tool_card_border_color(cx))
2489                                    .bg(cx.theme().colors().editor_background)
2490                                    .rounded_lg()
2491                                    .child(results_content),
2492                            )
2493                        }),
2494                )
2495            } else {
2496                v_flex()
2497                    .my_3()
2498                    .rounded_lg()
2499                    .border_1()
2500                    .border_color(self.tool_card_border_color(cx))
2501                    .overflow_hidden()
2502                    .child(
2503                        h_flex()
2504                            .group("disclosure-header")
2505                            .relative()
2506                            .justify_between()
2507                            .py_1()
2508                            .map(|element| {
2509                                if is_status_finished {
2510                                    element.pl_2().pr_0p5()
2511                                } else {
2512                                    element.px_2()
2513                                }
2514                            })
2515                            .bg(self.tool_card_header_bg(cx))
2516                            .map(|element| {
2517                                if is_open {
2518                                    element.border_b_1().rounded_t_md()
2519                                } else if needs_confirmation {
2520                                    element.rounded_t_md()
2521                                } else {
2522                                    element.rounded_md()
2523                                }
2524                            })
2525                            .border_color(self.tool_card_border_color(cx))
2526                            .child(
2527                                h_flex()
2528                                    .id("tool-label-container")
2529                                    .gap_1p5()
2530                                    .max_w_full()
2531                                    .overflow_x_scroll()
2532                                    .child(
2533                                        Icon::new(tool_use.icon)
2534                                            .size(IconSize::XSmall)
2535                                            .color(Color::Muted),
2536                                    )
2537                                    .child(
2538                                        h_flex().pr_8().text_ui_sm(cx).children(
2539                                            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| {
2540                                                open_markdown_link(text, workspace.clone(), window, cx);
2541                                            }}))
2542                                        ),
2543                                    ),
2544                            )
2545                            .child(
2546                                h_flex()
2547                                    .gap_1()
2548                                    .child(
2549                                        div().visible_on_hover("disclosure-header").child(
2550                                            Disclosure::new("tool-use-disclosure", is_open)
2551                                                .opened_icon(IconName::ChevronUp)
2552                                                .closed_icon(IconName::ChevronDown)
2553                                                .on_click(cx.listener({
2554                                                    let tool_use_id = tool_use.id.clone();
2555                                                    move |this, _event, _window, _cx| {
2556                                                        let is_open = this
2557                                                            .expanded_tool_uses
2558                                                            .entry(tool_use_id.clone())
2559                                                            .or_insert(false);
2560
2561                                                        *is_open = !*is_open;
2562                                                    }
2563                                                })),
2564                                        ),
2565                                    )
2566                                    .child(status_icons),
2567                            )
2568                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
2569                    )
2570                    .map(|parent| {
2571                        if !is_open {
2572                            return parent;
2573                        }
2574
2575                        parent.child(
2576                            v_flex()
2577                                .bg(cx.theme().colors().editor_background)
2578                                .map(|element| {
2579                                    if  needs_confirmation {
2580                                        element.rounded_none()
2581                                    } else {
2582                                        element.rounded_b_lg()
2583                                    }
2584                                })
2585                                .child(results_content),
2586                        )
2587                    })
2588                    .when(needs_confirmation, |this| {
2589                        this.child(
2590                            h_flex()
2591                                .py_1()
2592                                .pl_2()
2593                                .pr_1()
2594                                .gap_1()
2595                                .justify_between()
2596                                .bg(cx.theme().colors().editor_background)
2597                                .border_t_1()
2598                                .border_color(self.tool_card_border_color(cx))
2599                                .rounded_b_lg()
2600                                .child(
2601                                    Label::new("Waiting for Confirmation…")
2602                                        .color(Color::Muted)
2603                                        .size(LabelSize::Small)
2604                                        .with_animation(
2605                                            "generating-label",
2606                                            Animation::new(Duration::from_secs(1)).repeat(),
2607                                            |mut label, delta| {
2608                                                let text = match delta {
2609                                                    d if d < 0.25 => "Waiting for Confirmation",
2610                                                    d if d < 0.5 => "Waiting for Confirmation.",
2611                                                    d if d < 0.75 => "Waiting for Confirmation..",
2612                                                    _ => "Waiting for Confirmation...",
2613                                                };
2614                                                label.set_text(text);
2615                                                label
2616                                            },
2617                                        )
2618                                        .with_animation(
2619                                            "pulsating-label",
2620                                            Animation::new(Duration::from_secs(2))
2621                                                .repeat()
2622                                                .with_easing(pulsating_between(0.6, 1.)),
2623                                            |label, delta| label.map_element(|label| label.alpha(delta)),
2624                                        ),
2625                                )
2626                                .child(
2627                                    h_flex()
2628                                        .gap_0p5()
2629                                        .child({
2630                                            let tool_id = tool_use.id.clone();
2631                                            Button::new(
2632                                                "always-allow-tool-action",
2633                                                "Always Allow",
2634                                            )
2635                                            .label_size(LabelSize::Small)
2636                                            .icon(IconName::CheckDouble)
2637                                            .icon_position(IconPosition::Start)
2638                                            .icon_size(IconSize::Small)
2639                                            .icon_color(Color::Success)
2640                                            .tooltip(move |window, cx|  {
2641                                                Tooltip::with_meta(
2642                                                    "Never ask for permission",
2643                                                    None,
2644                                                    "Restore the original behavior in your Agent Panel settings",
2645                                                    window,
2646                                                    cx,
2647                                                )
2648                                            })
2649                                            .on_click(cx.listener(
2650                                                move |this, event, window, cx| {
2651                                                    if let Some(fs) = fs.clone() {
2652                                                        update_settings_file::<AssistantSettings>(
2653                                                            fs.clone(),
2654                                                            cx,
2655                                                            |settings, _| {
2656                                                                settings.set_always_allow_tool_actions(true);
2657                                                            },
2658                                                        );
2659                                                    }
2660                                                    this.handle_allow_tool(
2661                                                        tool_id.clone(),
2662                                                        event,
2663                                                        window,
2664                                                        cx,
2665                                                    )
2666                                                },
2667                                            ))
2668                                        })
2669                                        .child(ui::Divider::vertical())
2670                                        .child({
2671                                            let tool_id = tool_use.id.clone();
2672                                            Button::new("allow-tool-action", "Allow")
2673                                                .label_size(LabelSize::Small)
2674                                                .icon(IconName::Check)
2675                                                .icon_position(IconPosition::Start)
2676                                                .icon_size(IconSize::Small)
2677                                                .icon_color(Color::Success)
2678                                                .on_click(cx.listener(
2679                                                    move |this, event, window, cx| {
2680                                                        this.handle_allow_tool(
2681                                                            tool_id.clone(),
2682                                                            event,
2683                                                            window,
2684                                                            cx,
2685                                                        )
2686                                                    },
2687                                                ))
2688                                        })
2689                                        .child({
2690                                            let tool_id = tool_use.id.clone();
2691                                            let tool_name: Arc<str> = tool_use.name.into();
2692                                            Button::new("deny-tool", "Deny")
2693                                                .label_size(LabelSize::Small)
2694                                                .icon(IconName::Close)
2695                                                .icon_position(IconPosition::Start)
2696                                                .icon_size(IconSize::Small)
2697                                                .icon_color(Color::Error)
2698                                                .on_click(cx.listener(
2699                                                    move |this, event, window, cx| {
2700                                                        this.handle_deny_tool(
2701                                                            tool_id.clone(),
2702                                                            tool_name.clone(),
2703                                                            event,
2704                                                            window,
2705                                                            cx,
2706                                                        )
2707                                                    },
2708                                                ))
2709                                        }),
2710                                ),
2711                        )
2712                    })
2713            }
2714        })
2715    }
2716
2717    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
2718        let project_context = self.thread.read(cx).project_context();
2719        let project_context = project_context.borrow();
2720        let Some(project_context) = project_context.as_ref() else {
2721            return div().into_any();
2722        };
2723
2724        let rules_files = project_context
2725            .worktrees
2726            .iter()
2727            .filter_map(|worktree| worktree.rules_file.as_ref())
2728            .collect::<Vec<_>>();
2729
2730        let label_text = match rules_files.as_slice() {
2731            &[] => return div().into_any(),
2732            &[rules_file] => {
2733                format!("Using {:?} file", rules_file.path_in_worktree)
2734            }
2735            rules_files => {
2736                format!("Using {} rules files", rules_files.len())
2737            }
2738        };
2739
2740        div()
2741            .pt_2()
2742            .px_2p5()
2743            .child(
2744                h_flex()
2745                    .w_full()
2746                    .gap_0p5()
2747                    .child(
2748                        h_flex()
2749                            .gap_1p5()
2750                            .child(
2751                                Icon::new(IconName::File)
2752                                    .size(IconSize::XSmall)
2753                                    .color(Color::Disabled),
2754                            )
2755                            .child(
2756                                Label::new(label_text)
2757                                    .size(LabelSize::XSmall)
2758                                    .color(Color::Muted)
2759                                    .buffer_font(cx),
2760                            ),
2761                    )
2762                    .child(
2763                        IconButton::new("open-rule", IconName::ArrowUpRightAlt)
2764                            .shape(ui::IconButtonShape::Square)
2765                            .icon_size(IconSize::XSmall)
2766                            .icon_color(Color::Ignored)
2767                            .on_click(cx.listener(Self::handle_open_rules))
2768                            .tooltip(Tooltip::text("View Rules")),
2769                    ),
2770            )
2771            .into_any()
2772    }
2773
2774    fn handle_allow_tool(
2775        &mut self,
2776        tool_use_id: LanguageModelToolUseId,
2777        _: &ClickEvent,
2778        _window: &mut Window,
2779        cx: &mut Context<Self>,
2780    ) {
2781        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
2782            .thread
2783            .read(cx)
2784            .pending_tool(&tool_use_id)
2785            .map(|tool_use| tool_use.status.clone())
2786        {
2787            self.thread.update(cx, |thread, cx| {
2788                thread.run_tool(
2789                    c.tool_use_id.clone(),
2790                    c.ui_text.clone(),
2791                    c.input.clone(),
2792                    &c.messages,
2793                    c.tool.clone(),
2794                    cx,
2795                );
2796            });
2797        }
2798    }
2799
2800    fn handle_deny_tool(
2801        &mut self,
2802        tool_use_id: LanguageModelToolUseId,
2803        tool_name: Arc<str>,
2804        _: &ClickEvent,
2805        _window: &mut Window,
2806        cx: &mut Context<Self>,
2807    ) {
2808        self.thread.update(cx, |thread, cx| {
2809            thread.deny_tool_use(tool_use_id, tool_name, cx);
2810        });
2811    }
2812
2813    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
2814        let project_context = self.thread.read(cx).project_context();
2815        let project_context = project_context.borrow();
2816        let Some(project_context) = project_context.as_ref() else {
2817            return;
2818        };
2819
2820        let abs_paths = project_context
2821            .worktrees
2822            .iter()
2823            .flat_map(|worktree| worktree.rules_file.as_ref())
2824            .map(|rules_file| rules_file.abs_path.to_path_buf())
2825            .collect::<Vec<_>>();
2826
2827        if let Ok(task) = self.workspace.update(cx, move |workspace, cx| {
2828            // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
2829            // files clear. For example, if rules file 1 is already open but rules file 2 is not,
2830            // this would open and focus rules file 2 in a tab that is not next to rules file 1.
2831            workspace.open_paths(abs_paths, OpenOptions::default(), None, window, cx)
2832        }) {
2833            task.detach();
2834        }
2835    }
2836
2837    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
2838        for window in self.notifications.drain(..) {
2839            window
2840                .update(cx, |_, window, _| {
2841                    window.remove_window();
2842                })
2843                .ok();
2844
2845            self.notification_subscriptions.remove(&window);
2846        }
2847    }
2848
2849    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
2850        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
2851            return None;
2852        }
2853
2854        Some(
2855            div()
2856                .occlude()
2857                .id("active-thread-scrollbar")
2858                .on_mouse_move(cx.listener(|_, _, _, cx| {
2859                    cx.notify();
2860                    cx.stop_propagation()
2861                }))
2862                .on_hover(|_, _, cx| {
2863                    cx.stop_propagation();
2864                })
2865                .on_any_mouse_down(|_, _, cx| {
2866                    cx.stop_propagation();
2867                })
2868                .on_mouse_up(
2869                    MouseButton::Left,
2870                    cx.listener(|_, _, _, cx| {
2871                        cx.stop_propagation();
2872                    }),
2873                )
2874                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
2875                    cx.notify();
2876                }))
2877                .h_full()
2878                .absolute()
2879                .right_1()
2880                .top_1()
2881                .bottom_0()
2882                .w(px(12.))
2883                .cursor_default()
2884                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
2885        )
2886    }
2887
2888    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
2889        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
2890        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
2891            cx.background_executor()
2892                .timer(SCROLLBAR_SHOW_INTERVAL)
2893                .await;
2894            thread
2895                .update(cx, |thread, cx| {
2896                    if !thread.scrollbar_state.is_dragging() {
2897                        thread.show_scrollbar = false;
2898                        cx.notify();
2899                    }
2900                })
2901                .log_err();
2902        }))
2903    }
2904}
2905
2906impl Render for ActiveThread {
2907    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
2908        v_flex()
2909            .size_full()
2910            .relative()
2911            .on_mouse_move(cx.listener(|this, _, _, cx| {
2912                this.show_scrollbar = true;
2913                this.hide_scrollbar_later(cx);
2914                cx.notify();
2915            }))
2916            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
2917                this.show_scrollbar = true;
2918                this.hide_scrollbar_later(cx);
2919                cx.notify();
2920            }))
2921            .on_mouse_up(
2922                MouseButton::Left,
2923                cx.listener(|this, _, _, cx| {
2924                    this.hide_scrollbar_later(cx);
2925                }),
2926            )
2927            .child(list(self.list_state.clone()).flex_grow())
2928            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
2929                this.child(scrollbar)
2930            })
2931    }
2932}
2933
2934pub(crate) fn open_context(
2935    id: ContextId,
2936    context_store: Entity<ContextStore>,
2937    workspace: Entity<Workspace>,
2938    window: &mut Window,
2939    cx: &mut App,
2940) {
2941    let Some(context) = context_store.read(cx).context_for_id(id) else {
2942        return;
2943    };
2944
2945    match context {
2946        AssistantContext::File(file_context) => {
2947            if let Some(project_path) = file_context.context_buffer.buffer.read(cx).project_path(cx)
2948            {
2949                workspace.update(cx, |workspace, cx| {
2950                    workspace
2951                        .open_path(project_path, None, true, window, cx)
2952                        .detach_and_log_err(cx);
2953                });
2954            }
2955        }
2956        AssistantContext::Directory(directory_context) => {
2957            let project_path = directory_context.project_path(cx);
2958            workspace.update(cx, |workspace, cx| {
2959                workspace.project().update(cx, |project, cx| {
2960                    if let Some(entry) = project.entry_for_path(&project_path, cx) {
2961                        cx.emit(project::Event::RevealInProjectPanel(entry.id));
2962                    }
2963                })
2964            })
2965        }
2966        AssistantContext::Symbol(symbol_context) => {
2967            if let Some(project_path) = symbol_context
2968                .context_symbol
2969                .buffer
2970                .read(cx)
2971                .project_path(cx)
2972            {
2973                let snapshot = symbol_context.context_symbol.buffer.read(cx).snapshot();
2974                let target_position = symbol_context
2975                    .context_symbol
2976                    .id
2977                    .range
2978                    .start
2979                    .to_point(&snapshot);
2980
2981                let open_task = workspace.update(cx, |workspace, cx| {
2982                    workspace.open_path(project_path, None, true, window, cx)
2983                });
2984                window
2985                    .spawn(cx, async move |cx| {
2986                        if let Some(active_editor) = open_task
2987                            .await
2988                            .log_err()
2989                            .and_then(|item| item.downcast::<Editor>())
2990                        {
2991                            active_editor
2992                                .downgrade()
2993                                .update_in(cx, |editor, window, cx| {
2994                                    editor.go_to_singleton_buffer_point(
2995                                        target_position,
2996                                        window,
2997                                        cx,
2998                                    );
2999                                })
3000                                .log_err();
3001                        }
3002                    })
3003                    .detach();
3004            }
3005        }
3006        AssistantContext::FetchedUrl(fetched_url_context) => {
3007            cx.open_url(&fetched_url_context.url);
3008        }
3009        AssistantContext::Thread(thread_context) => {
3010            let thread_id = thread_context.thread.read(cx).id().clone();
3011            workspace.update(cx, |workspace, cx| {
3012                if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3013                    panel.update(cx, |panel, cx| {
3014                        panel
3015                            .open_thread(&thread_id, window, cx)
3016                            .detach_and_log_err(cx)
3017                    });
3018                }
3019            })
3020        }
3021    }
3022}