active_thread.rs

   1use crate::AgentPanel;
   2use crate::context::{AgentContextHandle, RULES_ICON};
   3use crate::context_picker::{ContextPicker, MentionLink};
   4use crate::context_store::ContextStore;
   5use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
   6use crate::thread::{
   7    LastRestoreCheckpoint, MessageId, MessageSegment, Thread, ThreadError, ThreadEvent,
   8    ThreadFeedback,
   9};
  10use crate::thread_store::{RulesLoadingError, TextThreadStore, ThreadStore};
  11use crate::tool_use::{PendingToolUseStatus, ToolUse};
  12use crate::ui::{
  13    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
  14};
  15use anyhow::Context as _;
  16use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
  17use assistant_tool::ToolUseStatus;
  18use collections::{HashMap, HashSet};
  19use editor::actions::{MoveUp, Paste};
  20use editor::scroll::Autoscroll;
  21use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer};
  22use gpui::{
  23    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardEntry,
  24    ClipboardItem, DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla,
  25    ListAlignment, ListState, MouseButton, PlatformDisplay, ScrollHandle, Stateful,
  26    StyleRefinement, Subscription, Task, TextStyle, TextStyleRefinement, Transformation,
  27    UnderlineStyle, WeakEntity, WindowHandle, linear_color_stop, linear_gradient, list, percentage,
  28    pulsating_between,
  29};
  30use language::{Buffer, Language, LanguageRegistry};
  31use language_model::{
  32    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, Role, StopReason,
  33};
  34use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  35use markdown::{HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
  36use project::{ProjectEntryId, ProjectItem as _};
  37use rope::Point;
  38use settings::{Settings as _, SettingsStore, update_settings_file};
  39use std::ffi::OsStr;
  40use std::path::Path;
  41use std::rc::Rc;
  42use std::sync::Arc;
  43use std::time::Duration;
  44use text::ToPoint;
  45use theme::ThemeSettings;
  46use ui::{
  47    Disclosure, IconButton, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize,
  48    Tooltip, prelude::*,
  49};
  50use util::ResultExt as _;
  51use util::markdown::MarkdownCodeBlock;
  52use workspace::Workspace;
  53use zed_actions::assistant::OpenRulesLibrary;
  54
  55pub struct ActiveThread {
  56    context_store: Entity<ContextStore>,
  57    language_registry: Arc<LanguageRegistry>,
  58    thread_store: Entity<ThreadStore>,
  59    text_thread_store: Entity<TextThreadStore>,
  60    thread: Entity<Thread>,
  61    workspace: WeakEntity<Workspace>,
  62    save_thread_task: Option<Task<()>>,
  63    messages: Vec<MessageId>,
  64    list_state: ListState,
  65    scrollbar_state: ScrollbarState,
  66    show_scrollbar: bool,
  67    hide_scrollbar_task: Option<Task<()>>,
  68    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  69    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  70    editing_message: Option<(MessageId, EditingMessageState)>,
  71    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  72    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  73    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  74    last_error: Option<ThreadError>,
  75    notifications: Vec<WindowHandle<AgentNotification>>,
  76    copied_code_block_ids: HashSet<(MessageId, usize)>,
  77    _subscriptions: Vec<Subscription>,
  78    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  79    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  80    _load_edited_message_context_task: Option<Task<()>>,
  81}
  82
  83struct RenderedMessage {
  84    language_registry: Arc<LanguageRegistry>,
  85    segments: Vec<RenderedMessageSegment>,
  86}
  87
  88#[derive(Clone)]
  89struct RenderedToolUse {
  90    label: Entity<Markdown>,
  91    input: Entity<Markdown>,
  92    output: Entity<Markdown>,
  93}
  94
  95impl RenderedMessage {
  96    fn from_segments(
  97        segments: &[MessageSegment],
  98        language_registry: Arc<LanguageRegistry>,
  99        cx: &mut App,
 100    ) -> Self {
 101        let mut this = Self {
 102            language_registry,
 103            segments: Vec::with_capacity(segments.len()),
 104        };
 105        for segment in segments {
 106            this.push_segment(segment, cx);
 107        }
 108        this
 109    }
 110
 111    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 112        if let Some(RenderedMessageSegment::Thinking {
 113            content,
 114            scroll_handle,
 115        }) = self.segments.last_mut()
 116        {
 117            content.update(cx, |markdown, cx| {
 118                markdown.append(text, cx);
 119            });
 120            scroll_handle.scroll_to_bottom();
 121        } else {
 122            self.segments.push(RenderedMessageSegment::Thinking {
 123                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 124                scroll_handle: ScrollHandle::default(),
 125            });
 126        }
 127    }
 128
 129    fn append_text(&mut self, text: &String, cx: &mut App) {
 130        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 131            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 132        } else {
 133            self.segments
 134                .push(RenderedMessageSegment::Text(parse_markdown(
 135                    SharedString::from(text),
 136                    self.language_registry.clone(),
 137                    cx,
 138                )));
 139        }
 140    }
 141
 142    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 143        match segment {
 144            MessageSegment::Thinking { text, .. } => {
 145                self.segments.push(RenderedMessageSegment::Thinking {
 146                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 147                    scroll_handle: ScrollHandle::default(),
 148                })
 149            }
 150            MessageSegment::Text(text) => {
 151                self.segments
 152                    .push(RenderedMessageSegment::Text(parse_markdown(
 153                        text.into(),
 154                        self.language_registry.clone(),
 155                        cx,
 156                    )))
 157            }
 158            MessageSegment::RedactedThinking(_) => {}
 159        };
 160    }
 161}
 162
 163enum RenderedMessageSegment {
 164    Thinking {
 165        content: Entity<Markdown>,
 166        scroll_handle: ScrollHandle,
 167    },
 168    Text(Entity<Markdown>),
 169}
 170
 171fn parse_markdown(
 172    text: SharedString,
 173    language_registry: Arc<LanguageRegistry>,
 174    cx: &mut App,
 175) -> Entity<Markdown> {
 176    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 177}
 178
 179pub(crate) fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 180    let theme_settings = ThemeSettings::get_global(cx);
 181    let colors = cx.theme().colors();
 182    let ui_font_size = TextSize::Default.rems(cx);
 183    let buffer_font_size = TextSize::Small.rems(cx);
 184    let mut text_style = window.text_style();
 185
 186    text_style.refine(&TextStyleRefinement {
 187        font_family: Some(theme_settings.ui_font.family.clone()),
 188        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 189        font_features: Some(theme_settings.ui_font.features.clone()),
 190        font_size: Some(ui_font_size.into()),
 191        color: Some(cx.theme().colors().text),
 192        ..Default::default()
 193    });
 194
 195    MarkdownStyle {
 196        base_text_style: text_style.clone(),
 197        syntax: cx.theme().syntax().clone(),
 198        selection_background_color: cx.theme().players().local().selection,
 199        code_block_overflow_x_scroll: true,
 200        table_overflow_x_scroll: true,
 201        heading_level_styles: Some(HeadingLevelStyles {
 202            h1: Some(TextStyleRefinement {
 203                font_size: Some(rems(1.15).into()),
 204                ..Default::default()
 205            }),
 206            h2: Some(TextStyleRefinement {
 207                font_size: Some(rems(1.1).into()),
 208                ..Default::default()
 209            }),
 210            h3: Some(TextStyleRefinement {
 211                font_size: Some(rems(1.05).into()),
 212                ..Default::default()
 213            }),
 214            h4: Some(TextStyleRefinement {
 215                font_size: Some(rems(1.).into()),
 216                ..Default::default()
 217            }),
 218            h5: Some(TextStyleRefinement {
 219                font_size: Some(rems(0.95).into()),
 220                ..Default::default()
 221            }),
 222            h6: Some(TextStyleRefinement {
 223                font_size: Some(rems(0.875).into()),
 224                ..Default::default()
 225            }),
 226        }),
 227        code_block: StyleRefinement {
 228            padding: EdgesRefinement {
 229                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 230                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 231                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 232                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 233            },
 234            background: Some(colors.editor_background.into()),
 235            text: Some(TextStyleRefinement {
 236                font_family: Some(theme_settings.buffer_font.family.clone()),
 237                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 238                font_features: Some(theme_settings.buffer_font.features.clone()),
 239                font_size: Some(buffer_font_size.into()),
 240                ..Default::default()
 241            }),
 242            ..Default::default()
 243        },
 244        inline_code: TextStyleRefinement {
 245            font_family: Some(theme_settings.buffer_font.family.clone()),
 246            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 247            font_features: Some(theme_settings.buffer_font.features.clone()),
 248            font_size: Some(buffer_font_size.into()),
 249            background_color: Some(colors.editor_foreground.opacity(0.08)),
 250            ..Default::default()
 251        },
 252        link: TextStyleRefinement {
 253            background_color: Some(colors.editor_foreground.opacity(0.025)),
 254            underline: Some(UnderlineStyle {
 255                color: Some(colors.text_accent.opacity(0.5)),
 256                thickness: px(1.),
 257                ..Default::default()
 258            }),
 259            ..Default::default()
 260        },
 261        link_callback: Some(Rc::new(move |url, cx| {
 262            if MentionLink::is_valid(url) {
 263                let colors = cx.theme().colors();
 264                Some(TextStyleRefinement {
 265                    background_color: Some(colors.element_background),
 266                    ..Default::default()
 267                })
 268            } else {
 269                None
 270            }
 271        })),
 272        ..Default::default()
 273    }
 274}
 275
 276fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 277    let theme_settings = ThemeSettings::get_global(cx);
 278    let colors = cx.theme().colors();
 279    let ui_font_size = TextSize::Default.rems(cx);
 280    let buffer_font_size = TextSize::Small.rems(cx);
 281    let mut text_style = window.text_style();
 282
 283    text_style.refine(&TextStyleRefinement {
 284        font_family: Some(theme_settings.ui_font.family.clone()),
 285        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 286        font_features: Some(theme_settings.ui_font.features.clone()),
 287        font_size: Some(ui_font_size.into()),
 288        color: Some(cx.theme().colors().text),
 289        ..Default::default()
 290    });
 291
 292    MarkdownStyle {
 293        base_text_style: text_style,
 294        syntax: cx.theme().syntax().clone(),
 295        selection_background_color: cx.theme().players().local().selection,
 296        code_block_overflow_x_scroll: true,
 297        code_block: StyleRefinement {
 298            margin: EdgesRefinement::default(),
 299            padding: EdgesRefinement::default(),
 300            background: Some(colors.editor_background.into()),
 301            border_color: None,
 302            border_widths: EdgesRefinement::default(),
 303            text: Some(TextStyleRefinement {
 304                font_family: Some(theme_settings.buffer_font.family.clone()),
 305                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 306                font_features: Some(theme_settings.buffer_font.features.clone()),
 307                font_size: Some(buffer_font_size.into()),
 308                ..Default::default()
 309            }),
 310            ..Default::default()
 311        },
 312        inline_code: TextStyleRefinement {
 313            font_family: Some(theme_settings.buffer_font.family.clone()),
 314            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 315            font_features: Some(theme_settings.buffer_font.features.clone()),
 316            font_size: Some(TextSize::XSmall.rems(cx).into()),
 317            ..Default::default()
 318        },
 319        heading: StyleRefinement {
 320            text: Some(TextStyleRefinement {
 321                font_size: Some(ui_font_size.into()),
 322                ..Default::default()
 323            }),
 324            ..Default::default()
 325        },
 326        ..Default::default()
 327    }
 328}
 329
 330const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 10;
 331
 332fn render_markdown_code_block(
 333    message_id: MessageId,
 334    ix: usize,
 335    kind: &CodeBlockKind,
 336    parsed_markdown: &ParsedMarkdown,
 337    metadata: CodeBlockMetadata,
 338    active_thread: Entity<ActiveThread>,
 339    workspace: WeakEntity<Workspace>,
 340    _window: &Window,
 341    cx: &App,
 342) -> Div {
 343    let label = match kind {
 344        CodeBlockKind::Indented => None,
 345        CodeBlockKind::Fenced => Some(
 346            h_flex()
 347                .gap_1()
 348                .child(
 349                    Icon::new(IconName::Code)
 350                        .color(Color::Muted)
 351                        .size(IconSize::XSmall),
 352                )
 353                .child(Label::new("untitled").size(LabelSize::Small))
 354                .into_any_element(),
 355        ),
 356        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 357            parsed_markdown.languages_by_name.get(raw_language_name),
 358            raw_language_name.clone(),
 359            cx,
 360        )),
 361        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 362            // We tell the model to use /dev/null for the path instead of using ```language
 363            // because otherwise it consistently fails to use code citations.
 364            if path_range.path.starts_with("/dev/null") {
 365                let ext = path_range
 366                    .path
 367                    .extension()
 368                    .and_then(OsStr::to_str)
 369                    .map(|str| SharedString::new(str.to_string()))
 370                    .unwrap_or_default();
 371
 372                render_code_language(
 373                    parsed_markdown
 374                        .languages_by_path
 375                        .get(&path_range.path)
 376                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 377                    ext,
 378                    cx,
 379                )
 380            } else {
 381                let content = if let Some(parent) = path_range.path.parent() {
 382                    h_flex()
 383                        .ml_1()
 384                        .gap_1()
 385                        .child(
 386                            Label::new(file_name.to_string_lossy().to_string())
 387                                .size(LabelSize::Small),
 388                        )
 389                        .child(
 390                            Label::new(parent.to_string_lossy().to_string())
 391                                .color(Color::Muted)
 392                                .size(LabelSize::Small),
 393                        )
 394                        .into_any_element()
 395                } else {
 396                    Label::new(path_range.path.to_string_lossy().to_string())
 397                        .size(LabelSize::Small)
 398                        .ml_1()
 399                        .into_any_element()
 400                };
 401
 402                h_flex()
 403                    .id(("code-block-header-label", ix))
 404                    .w_full()
 405                    .max_w_full()
 406                    .px_1()
 407                    .gap_0p5()
 408                    .cursor_pointer()
 409                    .rounded_sm()
 410                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 411                    .tooltip(Tooltip::text("Jump to File"))
 412                    .child(
 413                        h_flex()
 414                            .gap_0p5()
 415                            .children(
 416                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 417                                    .map(Icon::from_path)
 418                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 419                            )
 420                            .child(content)
 421                            .child(
 422                                Icon::new(IconName::ArrowUpRight)
 423                                    .size(IconSize::XSmall)
 424                                    .color(Color::Ignored),
 425                            ),
 426                    )
 427                    .on_click({
 428                        let path_range = path_range.clone();
 429                        move |_, window, cx| {
 430                            workspace
 431                                .update(cx, {
 432                                    |workspace, cx| {
 433                                        let Some(project_path) = workspace
 434                                            .project()
 435                                            .read(cx)
 436                                            .find_project_path(&path_range.path, cx)
 437                                        else {
 438                                            return;
 439                                        };
 440                                        let Some(target) = path_range.range.as_ref().map(|range| {
 441                                            Point::new(
 442                                                // Line number is 1-based
 443                                                range.start.line.saturating_sub(1),
 444                                                range.start.col.unwrap_or(0),
 445                                            )
 446                                        }) else {
 447                                            return;
 448                                        };
 449                                        let open_task = workspace.open_path(
 450                                            project_path,
 451                                            None,
 452                                            true,
 453                                            window,
 454                                            cx,
 455                                        );
 456                                        window
 457                                            .spawn(cx, async move |cx| {
 458                                                let item = open_task.await?;
 459                                                if let Some(active_editor) =
 460                                                    item.downcast::<Editor>()
 461                                                {
 462                                                    active_editor
 463                                                        .update_in(cx, |editor, window, cx| {
 464                                                            editor.go_to_singleton_buffer_point(
 465                                                                target, window, cx,
 466                                                            );
 467                                                        })
 468                                                        .ok();
 469                                                }
 470                                                anyhow::Ok(())
 471                                            })
 472                                            .detach_and_log_err(cx);
 473                                    }
 474                                })
 475                                .ok();
 476                        }
 477                    })
 478                    .into_any_element()
 479            }
 480        }),
 481    };
 482
 483    let codeblock_was_copied = active_thread
 484        .read(cx)
 485        .copied_code_block_ids
 486        .contains(&(message_id, ix));
 487
 488    let is_expanded = active_thread
 489        .read(cx)
 490        .expanded_code_blocks
 491        .get(&(message_id, ix))
 492        .copied()
 493        .unwrap_or(true);
 494
 495    let codeblock_header_bg = cx
 496        .theme()
 497        .colors()
 498        .element_background
 499        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 500
 501    let codeblock_header = h_flex()
 502        .py_1()
 503        .pl_1p5()
 504        .pr_1()
 505        .gap_1()
 506        .justify_between()
 507        .border_b_1()
 508        .border_color(cx.theme().colors().border.opacity(0.6))
 509        .bg(codeblock_header_bg)
 510        .rounded_t_md()
 511        .children(label)
 512        .child(
 513            h_flex()
 514                .visible_on_hover("codeblock_container")
 515                .gap_1()
 516                .child(
 517                    IconButton::new(
 518                        ("copy-markdown-code", ix),
 519                        if codeblock_was_copied {
 520                            IconName::Check
 521                        } else {
 522                            IconName::Copy
 523                        },
 524                    )
 525                    .icon_color(Color::Muted)
 526                    .shape(ui::IconButtonShape::Square)
 527                    .tooltip(Tooltip::text("Copy Code"))
 528                    .on_click({
 529                        let active_thread = active_thread.clone();
 530                        let parsed_markdown = parsed_markdown.clone();
 531                        let code_block_range = metadata.content_range.clone();
 532                        move |_event, _window, cx| {
 533                            active_thread.update(cx, |this, cx| {
 534                                this.copied_code_block_ids.insert((message_id, ix));
 535
 536                                let code =
 537                                    parsed_markdown.source()[code_block_range.clone()].to_string();
 538                                cx.write_to_clipboard(ClipboardItem::new_string(code));
 539
 540                                cx.spawn(async move |this, cx| {
 541                                    cx.background_executor().timer(Duration::from_secs(2)).await;
 542
 543                                    cx.update(|cx| {
 544                                        this.update(cx, |this, cx| {
 545                                            this.copied_code_block_ids.remove(&(message_id, ix));
 546                                            cx.notify();
 547                                        })
 548                                    })
 549                                    .ok();
 550                                })
 551                                .detach();
 552                            });
 553                        }
 554                    }),
 555                )
 556                .when(
 557                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 558                    |header| {
 559                        header.child(
 560                            IconButton::new(
 561                                ("expand-collapse-code", ix),
 562                                if is_expanded {
 563                                    IconName::ChevronUp
 564                                } else {
 565                                    IconName::ChevronDown
 566                                },
 567                            )
 568                            .icon_color(Color::Muted)
 569                            .shape(ui::IconButtonShape::Square)
 570                            .tooltip(Tooltip::text(if is_expanded {
 571                                "Collapse Code"
 572                            } else {
 573                                "Expand Code"
 574                            }))
 575                            .on_click({
 576                                let active_thread = active_thread.clone();
 577                                move |_event, _window, cx| {
 578                                    active_thread.update(cx, |this, cx| {
 579                                        let is_expanded = this
 580                                            .expanded_code_blocks
 581                                            .entry((message_id, ix))
 582                                            .or_insert(true);
 583                                        *is_expanded = !*is_expanded;
 584                                        cx.notify();
 585                                    });
 586                                }
 587                            }),
 588                        )
 589                    },
 590                ),
 591        );
 592
 593    v_flex()
 594        .group("codeblock_container")
 595        .my_2()
 596        .overflow_hidden()
 597        .rounded_lg()
 598        .border_1()
 599        .border_color(cx.theme().colors().border.opacity(0.6))
 600        .bg(cx.theme().colors().editor_background)
 601        .child(codeblock_header)
 602        .when(
 603            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 604            |this| {
 605                if is_expanded {
 606                    this.h_full()
 607                } else {
 608                    this.max_h_80()
 609                }
 610            },
 611        )
 612}
 613
 614fn render_code_language(
 615    language: Option<&Arc<Language>>,
 616    name_fallback: SharedString,
 617    cx: &App,
 618) -> AnyElement {
 619    let icon_path = language.and_then(|language| {
 620        language
 621            .config()
 622            .matcher
 623            .path_suffixes
 624            .iter()
 625            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 626            .map(Icon::from_path)
 627    });
 628
 629    let language_label = language
 630        .map(|language| language.name().into())
 631        .unwrap_or(name_fallback);
 632
 633    h_flex()
 634        .gap_1()
 635        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::Small)))
 636        .child(Label::new(language_label).size(LabelSize::Small))
 637        .into_any_element()
 638}
 639
 640fn open_markdown_link(
 641    text: SharedString,
 642    workspace: WeakEntity<Workspace>,
 643    window: &mut Window,
 644    cx: &mut App,
 645) {
 646    let Some(workspace) = workspace.upgrade() else {
 647        cx.open_url(&text);
 648        return;
 649    };
 650
 651    match MentionLink::try_parse(&text, &workspace, cx) {
 652        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 653            if entry.is_dir() {
 654                workspace.project().update(cx, |_, cx| {
 655                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 656                })
 657            } else {
 658                workspace
 659                    .open_path(path, None, true, window, cx)
 660                    .detach_and_log_err(cx);
 661            }
 662        }),
 663        Some(MentionLink::Symbol(path, symbol_name)) => {
 664            let open_task = workspace.update(cx, |workspace, cx| {
 665                workspace.open_path(path, None, true, window, cx)
 666            });
 667            window
 668                .spawn(cx, async move |cx| {
 669                    let active_editor = open_task
 670                        .await?
 671                        .downcast::<Editor>()
 672                        .context("Item is not an editor")?;
 673                    active_editor.update_in(cx, |editor, window, cx| {
 674                        let symbol_range = editor
 675                            .buffer()
 676                            .read(cx)
 677                            .snapshot(cx)
 678                            .outline(None)
 679                            .and_then(|outline| {
 680                                outline
 681                                    .find_most_similar(&symbol_name)
 682                                    .map(|(_, item)| item.range.clone())
 683                            })
 684                            .context("Could not find matching symbol")?;
 685
 686                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 687                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 688                        });
 689                        anyhow::Ok(())
 690                    })
 691                })
 692                .detach_and_log_err(cx);
 693        }
 694        Some(MentionLink::Selection(path, line_range)) => {
 695            let open_task = workspace.update(cx, |workspace, cx| {
 696                workspace.open_path(path, None, true, window, cx)
 697            });
 698            window
 699                .spawn(cx, async move |cx| {
 700                    let active_editor = open_task
 701                        .await?
 702                        .downcast::<Editor>()
 703                        .context("Item is not an editor")?;
 704                    active_editor.update_in(cx, |editor, window, cx| {
 705                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 706                            s.select_ranges([Point::new(line_range.start as u32, 0)
 707                                ..Point::new(line_range.start as u32, 0)])
 708                        });
 709                        anyhow::Ok(())
 710                    })
 711                })
 712                .detach_and_log_err(cx);
 713        }
 714        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 715            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 716                panel.update(cx, |panel, cx| {
 717                    panel
 718                        .open_thread_by_id(&thread_id, window, cx)
 719                        .detach_and_log_err(cx)
 720                });
 721            }
 722        }),
 723        Some(MentionLink::TextThread(path)) => workspace.update(cx, |workspace, cx| {
 724            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 725                panel.update(cx, |panel, cx| {
 726                    panel
 727                        .open_saved_prompt_editor(path, window, cx)
 728                        .detach_and_log_err(cx);
 729                });
 730            }
 731        }),
 732        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 733        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
 734            Box::new(OpenRulesLibrary {
 735                prompt_to_select: Some(prompt_id.0),
 736            }),
 737            cx,
 738        ),
 739        None => cx.open_url(&text),
 740    }
 741}
 742
 743struct EditingMessageState {
 744    editor: Entity<Editor>,
 745    context_strip: Entity<ContextStrip>,
 746    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 747    last_estimated_token_count: Option<usize>,
 748    _subscriptions: [Subscription; 2],
 749    _update_token_count_task: Option<Task<()>>,
 750}
 751
 752impl ActiveThread {
 753    pub fn new(
 754        thread: Entity<Thread>,
 755        thread_store: Entity<ThreadStore>,
 756        text_thread_store: Entity<TextThreadStore>,
 757        context_store: Entity<ContextStore>,
 758        language_registry: Arc<LanguageRegistry>,
 759        workspace: WeakEntity<Workspace>,
 760        window: &mut Window,
 761        cx: &mut Context<Self>,
 762    ) -> Self {
 763        let subscriptions = vec![
 764            cx.observe(&thread, |_, _, cx| cx.notify()),
 765            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 766            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 767            cx.observe_global::<SettingsStore>(|_, cx| cx.notify()),
 768        ];
 769
 770        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 771            let this = cx.entity().downgrade();
 772            move |ix, window: &mut Window, cx: &mut App| {
 773                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 774                    .unwrap()
 775            }
 776        });
 777        let mut this = Self {
 778            language_registry,
 779            thread_store,
 780            text_thread_store,
 781            context_store,
 782            thread: thread.clone(),
 783            workspace,
 784            save_thread_task: None,
 785            messages: Vec::new(),
 786            rendered_messages_by_id: HashMap::default(),
 787            rendered_tool_uses: HashMap::default(),
 788            expanded_tool_uses: HashMap::default(),
 789            expanded_thinking_segments: HashMap::default(),
 790            expanded_code_blocks: HashMap::default(),
 791            list_state: list_state.clone(),
 792            scrollbar_state: ScrollbarState::new(list_state),
 793            show_scrollbar: false,
 794            hide_scrollbar_task: None,
 795            editing_message: None,
 796            last_error: None,
 797            copied_code_block_ids: HashSet::default(),
 798            notifications: Vec::new(),
 799            _subscriptions: subscriptions,
 800            notification_subscriptions: HashMap::default(),
 801            open_feedback_editors: HashMap::default(),
 802            _load_edited_message_context_task: None,
 803        };
 804
 805        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 806            this.push_message(&message.id, &message.segments, window, cx);
 807
 808            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 809                this.render_tool_use_markdown(
 810                    tool_use.id.clone(),
 811                    tool_use.ui_text.clone(),
 812                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 813                    tool_use.status.text(),
 814                    cx,
 815                );
 816            }
 817        }
 818
 819        this
 820    }
 821
 822    pub fn thread(&self) -> &Entity<Thread> {
 823        &self.thread
 824    }
 825
 826    pub fn is_empty(&self) -> bool {
 827        self.messages.is_empty()
 828    }
 829
 830    pub fn summary(&self, cx: &App) -> Option<SharedString> {
 831        self.thread.read(cx).summary()
 832    }
 833
 834    pub fn summary_or_default(&self, cx: &App) -> SharedString {
 835        self.thread.read(cx).summary_or_default()
 836    }
 837
 838    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 839        self.last_error.take();
 840        self.thread.update(cx, |thread, cx| {
 841            thread.cancel_last_completion(Some(window.window_handle()), cx)
 842        })
 843    }
 844
 845    pub fn last_error(&self) -> Option<ThreadError> {
 846        self.last_error.clone()
 847    }
 848
 849    pub fn clear_last_error(&mut self) {
 850        self.last_error.take();
 851    }
 852
 853    /// Returns the editing message id and the estimated token count in the content
 854    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
 855        self.editing_message
 856            .as_ref()
 857            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 858    }
 859
 860    pub fn context_store(&self) -> &Entity<ContextStore> {
 861        &self.context_store
 862    }
 863
 864    pub fn thread_store(&self) -> &Entity<ThreadStore> {
 865        &self.thread_store
 866    }
 867
 868    pub fn text_thread_store(&self) -> &Entity<TextThreadStore> {
 869        &self.text_thread_store
 870    }
 871
 872    fn push_message(
 873        &mut self,
 874        id: &MessageId,
 875        segments: &[MessageSegment],
 876        _window: &mut Window,
 877        cx: &mut Context<Self>,
 878    ) {
 879        let old_len = self.messages.len();
 880        self.messages.push(*id);
 881        self.list_state.splice(old_len..old_len, 1);
 882
 883        let rendered_message =
 884            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 885        self.rendered_messages_by_id.insert(*id, rendered_message);
 886    }
 887
 888    fn edited_message(
 889        &mut self,
 890        id: &MessageId,
 891        segments: &[MessageSegment],
 892        _window: &mut Window,
 893        cx: &mut Context<Self>,
 894    ) {
 895        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 896            return;
 897        };
 898        self.list_state.splice(index..index + 1, 1);
 899        let rendered_message =
 900            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 901        self.rendered_messages_by_id.insert(*id, rendered_message);
 902    }
 903
 904    fn deleted_message(&mut self, id: &MessageId) {
 905        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 906            return;
 907        };
 908        self.messages.remove(index);
 909        self.list_state.splice(index..index + 1, 0);
 910        self.rendered_messages_by_id.remove(id);
 911    }
 912
 913    fn render_tool_use_markdown(
 914        &mut self,
 915        tool_use_id: LanguageModelToolUseId,
 916        tool_label: impl Into<SharedString>,
 917        tool_input: &str,
 918        tool_output: SharedString,
 919        cx: &mut Context<Self>,
 920    ) {
 921        let rendered = self
 922            .rendered_tool_uses
 923            .entry(tool_use_id.clone())
 924            .or_insert_with(|| RenderedToolUse {
 925                label: cx.new(|cx| {
 926                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 927                }),
 928                input: cx.new(|cx| {
 929                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 930                }),
 931                output: cx.new(|cx| {
 932                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 933                }),
 934            });
 935
 936        rendered.label.update(cx, |this, cx| {
 937            this.replace(tool_label, cx);
 938        });
 939        rendered.input.update(cx, |this, cx| {
 940            this.replace(
 941                MarkdownCodeBlock {
 942                    tag: "json",
 943                    text: tool_input,
 944                }
 945                .to_string(),
 946                cx,
 947            );
 948        });
 949        rendered.output.update(cx, |this, cx| {
 950            this.replace(tool_output, cx);
 951        });
 952    }
 953
 954    fn handle_thread_event(
 955        &mut self,
 956        _thread: &Entity<Thread>,
 957        event: &ThreadEvent,
 958        window: &mut Window,
 959        cx: &mut Context<Self>,
 960    ) {
 961        match event {
 962            ThreadEvent::CancelEditing => {
 963                if self.editing_message.is_some() {
 964                    self.cancel_editing_message(&menu::Cancel, window, cx);
 965                }
 966            }
 967            ThreadEvent::ShowError(error) => {
 968                self.last_error = Some(error.clone());
 969            }
 970            ThreadEvent::NewRequest | ThreadEvent::CompletionCanceled => {
 971                cx.notify();
 972            }
 973            ThreadEvent::StreamedCompletion
 974            | ThreadEvent::SummaryGenerated
 975            | ThreadEvent::SummaryChanged => {
 976                self.save_thread(cx);
 977            }
 978            ThreadEvent::Stopped(reason) => match reason {
 979                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 980                    let thread = self.thread.read(cx);
 981                    self.show_notification(
 982                        if thread.used_tools_since_last_user_message() {
 983                            "Finished running tools"
 984                        } else {
 985                            "New message"
 986                        },
 987                        IconName::ZedAssistant,
 988                        window,
 989                        cx,
 990                    );
 991                }
 992                _ => {}
 993            },
 994            ThreadEvent::ToolConfirmationNeeded => {
 995                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 996            }
 997            ThreadEvent::StreamedAssistantText(message_id, text) => {
 998                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 999                    rendered_message.append_text(text, cx);
1000                }
1001            }
1002            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
1003                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
1004                    rendered_message.append_thinking(text, cx);
1005                }
1006            }
1007            ThreadEvent::MessageAdded(message_id) => {
1008                if let Some(message_segments) = self
1009                    .thread
1010                    .read(cx)
1011                    .message(*message_id)
1012                    .map(|message| message.segments.clone())
1013                {
1014                    self.push_message(message_id, &message_segments, window, cx);
1015                }
1016
1017                self.save_thread(cx);
1018                cx.notify();
1019            }
1020            ThreadEvent::MessageEdited(message_id) => {
1021                if let Some(message_segments) = self
1022                    .thread
1023                    .read(cx)
1024                    .message(*message_id)
1025                    .map(|message| message.segments.clone())
1026                {
1027                    self.edited_message(message_id, &message_segments, window, cx);
1028                }
1029
1030                self.save_thread(cx);
1031                cx.notify();
1032            }
1033            ThreadEvent::MessageDeleted(message_id) => {
1034                self.deleted_message(message_id);
1035                self.save_thread(cx);
1036                cx.notify();
1037            }
1038            ThreadEvent::UsePendingTools { tool_uses } => {
1039                for tool_use in tool_uses {
1040                    self.render_tool_use_markdown(
1041                        tool_use.id.clone(),
1042                        tool_use.ui_text.clone(),
1043                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1044                        "".into(),
1045                        cx,
1046                    );
1047                }
1048            }
1049            ThreadEvent::StreamedToolUse {
1050                tool_use_id,
1051                ui_text,
1052                input,
1053            } => {
1054                self.render_tool_use_markdown(
1055                    tool_use_id.clone(),
1056                    ui_text.clone(),
1057                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1058                    "".into(),
1059                    cx,
1060                );
1061            }
1062            ThreadEvent::ToolFinished {
1063                pending_tool_use, ..
1064            } => {
1065                if let Some(tool_use) = pending_tool_use {
1066                    self.render_tool_use_markdown(
1067                        tool_use.id.clone(),
1068                        tool_use.ui_text.clone(),
1069                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1070                        self.thread
1071                            .read(cx)
1072                            .output_for_tool(&tool_use.id)
1073                            .map(|output| output.clone().into())
1074                            .unwrap_or("".into()),
1075                        cx,
1076                    );
1077                }
1078            }
1079            ThreadEvent::CheckpointChanged => cx.notify(),
1080            ThreadEvent::ReceivedTextChunk => {}
1081            ThreadEvent::InvalidToolInput {
1082                tool_use_id,
1083                ui_text,
1084                invalid_input_json,
1085            } => {
1086                self.render_tool_use_markdown(
1087                    tool_use_id.clone(),
1088                    ui_text,
1089                    invalid_input_json,
1090                    self.thread
1091                        .read(cx)
1092                        .output_for_tool(tool_use_id)
1093                        .map(|output| output.clone().into())
1094                        .unwrap_or("".into()),
1095                    cx,
1096                );
1097            }
1098            ThreadEvent::MissingToolUse {
1099                tool_use_id,
1100                ui_text,
1101            } => {
1102                self.render_tool_use_markdown(
1103                    tool_use_id.clone(),
1104                    ui_text,
1105                    "",
1106                    self.thread
1107                        .read(cx)
1108                        .output_for_tool(tool_use_id)
1109                        .map(|output| output.clone().into())
1110                        .unwrap_or("".into()),
1111                    cx,
1112                );
1113            }
1114        }
1115    }
1116
1117    fn handle_rules_loading_error(
1118        &mut self,
1119        _thread_store: Entity<ThreadStore>,
1120        error: &RulesLoadingError,
1121        cx: &mut Context<Self>,
1122    ) {
1123        self.last_error = Some(ThreadError::Message {
1124            header: "Error loading rules file".into(),
1125            message: error.message.clone(),
1126        });
1127        cx.notify();
1128    }
1129
1130    fn show_notification(
1131        &mut self,
1132        caption: impl Into<SharedString>,
1133        icon: IconName,
1134        window: &mut Window,
1135        cx: &mut Context<ActiveThread>,
1136    ) {
1137        if window.is_window_active() || !self.notifications.is_empty() {
1138            return;
1139        }
1140
1141        let title = self
1142            .thread
1143            .read(cx)
1144            .summary()
1145            .unwrap_or("Agent Panel".into());
1146
1147        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1148            NotifyWhenAgentWaiting::PrimaryScreen => {
1149                if let Some(primary) = cx.primary_display() {
1150                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1151                }
1152            }
1153            NotifyWhenAgentWaiting::AllScreens => {
1154                let caption = caption.into();
1155                for screen in cx.displays() {
1156                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1157                }
1158            }
1159            NotifyWhenAgentWaiting::Never => {
1160                // Don't show anything
1161            }
1162        }
1163    }
1164
1165    fn pop_up(
1166        &mut self,
1167        icon: IconName,
1168        caption: SharedString,
1169        title: SharedString,
1170        window: &mut Window,
1171        screen: Rc<dyn PlatformDisplay>,
1172        cx: &mut Context<'_, ActiveThread>,
1173    ) {
1174        let options = AgentNotification::window_options(screen, cx);
1175
1176        let project_name = self.workspace.upgrade().and_then(|workspace| {
1177            workspace
1178                .read(cx)
1179                .project()
1180                .read(cx)
1181                .visible_worktrees(cx)
1182                .next()
1183                .map(|worktree| worktree.read(cx).root_name().to_string())
1184        });
1185
1186        if let Some(screen_window) = cx
1187            .open_window(options, |_, cx| {
1188                cx.new(|_| {
1189                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1190                })
1191            })
1192            .log_err()
1193        {
1194            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1195                self.notification_subscriptions
1196                    .entry(screen_window)
1197                    .or_insert_with(Vec::new)
1198                    .push(cx.subscribe_in(&pop_up, window, {
1199                        |this, _, event, window, cx| match event {
1200                            AgentNotificationEvent::Accepted => {
1201                                let handle = window.window_handle();
1202                                cx.activate(true);
1203
1204                                let workspace_handle = this.workspace.clone();
1205
1206                                // If there are multiple Zed windows, activate the correct one.
1207                                cx.defer(move |cx| {
1208                                    handle
1209                                        .update(cx, |_view, window, _cx| {
1210                                            window.activate_window();
1211
1212                                            if let Some(workspace) = workspace_handle.upgrade() {
1213                                                workspace.update(_cx, |workspace, cx| {
1214                                                    workspace.focus_panel::<AgentPanel>(window, cx);
1215                                                });
1216                                            }
1217                                        })
1218                                        .log_err();
1219                                });
1220
1221                                this.dismiss_notifications(cx);
1222                            }
1223                            AgentNotificationEvent::Dismissed => {
1224                                this.dismiss_notifications(cx);
1225                            }
1226                        }
1227                    }));
1228
1229                self.notifications.push(screen_window);
1230
1231                // If the user manually refocuses the original window, dismiss the popup.
1232                self.notification_subscriptions
1233                    .entry(screen_window)
1234                    .or_insert_with(Vec::new)
1235                    .push({
1236                        let pop_up_weak = pop_up.downgrade();
1237
1238                        cx.observe_window_activation(window, move |_, window, cx| {
1239                            if window.is_window_active() {
1240                                if let Some(pop_up) = pop_up_weak.upgrade() {
1241                                    pop_up.update(cx, |_, cx| {
1242                                        cx.emit(AgentNotificationEvent::Dismissed);
1243                                    });
1244                                }
1245                            }
1246                        })
1247                    });
1248            }
1249        }
1250    }
1251
1252    /// Spawns a task to save the active thread.
1253    ///
1254    /// Only one task to save the thread will be in flight at a time.
1255    fn save_thread(&mut self, cx: &mut Context<Self>) {
1256        let thread = self.thread.clone();
1257        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1258            let task = this
1259                .update(cx, |this, cx| {
1260                    this.thread_store
1261                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1262                })
1263                .ok();
1264
1265            if let Some(task) = task {
1266                task.await.log_err();
1267            }
1268        }));
1269    }
1270
1271    fn start_editing_message(
1272        &mut self,
1273        message_id: MessageId,
1274        message_segments: &[MessageSegment],
1275        window: &mut Window,
1276        cx: &mut Context<Self>,
1277    ) {
1278        // User message should always consist of a single text segment,
1279        // therefore we can skip returning early if it's not a text segment.
1280        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1281            return;
1282        };
1283
1284        let editor = crate::message_editor::create_editor(
1285            self.workspace.clone(),
1286            self.context_store.downgrade(),
1287            self.thread_store.downgrade(),
1288            self.text_thread_store.downgrade(),
1289            window,
1290            cx,
1291        );
1292        editor.update(cx, |editor, cx| {
1293            editor.set_text(message_text.clone(), window, cx);
1294            editor.focus_handle(cx).focus(window);
1295            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1296        });
1297        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1298            EditorEvent::BufferEdited => {
1299                this.update_editing_message_token_count(true, cx);
1300            }
1301            _ => {}
1302        });
1303
1304        let context_picker_menu_handle = PopoverMenuHandle::default();
1305        let context_strip = cx.new(|cx| {
1306            ContextStrip::new(
1307                self.context_store.clone(),
1308                self.workspace.clone(),
1309                Some(self.thread_store.downgrade()),
1310                Some(self.text_thread_store.downgrade()),
1311                context_picker_menu_handle.clone(),
1312                SuggestContextKind::File,
1313                window,
1314                cx,
1315            )
1316        });
1317
1318        let context_strip_subscription =
1319            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1320
1321        self.editing_message = Some((
1322            message_id,
1323            EditingMessageState {
1324                editor: editor.clone(),
1325                context_strip,
1326                context_picker_menu_handle,
1327                last_estimated_token_count: None,
1328                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1329                _update_token_count_task: None,
1330            },
1331        ));
1332        self.update_editing_message_token_count(false, cx);
1333        cx.notify();
1334    }
1335
1336    fn handle_context_strip_event(
1337        &mut self,
1338        _context_strip: &Entity<ContextStrip>,
1339        event: &ContextStripEvent,
1340        window: &mut Window,
1341        cx: &mut Context<Self>,
1342    ) {
1343        if let Some((_, state)) = self.editing_message.as_ref() {
1344            match event {
1345                ContextStripEvent::PickerDismissed
1346                | ContextStripEvent::BlurredEmpty
1347                | ContextStripEvent::BlurredDown => {
1348                    let editor_focus_handle = state.editor.focus_handle(cx);
1349                    window.focus(&editor_focus_handle);
1350                }
1351                ContextStripEvent::BlurredUp => {}
1352            }
1353        }
1354    }
1355
1356    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1357        let Some((message_id, state)) = self.editing_message.as_mut() else {
1358            return;
1359        };
1360
1361        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1362        state._update_token_count_task.take();
1363
1364        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1365            state.last_estimated_token_count.take();
1366            return;
1367        };
1368
1369        let editor = state.editor.clone();
1370        let thread = self.thread.clone();
1371        let message_id = *message_id;
1372
1373        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1374            if debounce {
1375                cx.background_executor()
1376                    .timer(Duration::from_millis(200))
1377                    .await;
1378            }
1379
1380            let token_count = if let Some(task) = cx
1381                .update(|cx| {
1382                    let Some(message) = thread.read(cx).message(message_id) else {
1383                        log::error!("Message that was being edited no longer exists");
1384                        return None;
1385                    };
1386                    let message_text = editor.read(cx).text(cx);
1387
1388                    if message_text.is_empty() && message.loaded_context.is_empty() {
1389                        return None;
1390                    }
1391
1392                    let mut request_message = LanguageModelRequestMessage {
1393                        role: language_model::Role::User,
1394                        content: Vec::new(),
1395                        cache: false,
1396                    };
1397
1398                    message
1399                        .loaded_context
1400                        .add_to_request_message(&mut request_message);
1401
1402                    if !message_text.is_empty() {
1403                        request_message
1404                            .content
1405                            .push(MessageContent::Text(message_text));
1406                    }
1407
1408                    let request = language_model::LanguageModelRequest {
1409                        thread_id: None,
1410                        prompt_id: None,
1411                        mode: None,
1412                        messages: vec![request_message],
1413                        tools: vec![],
1414                        stop: vec![],
1415                        temperature: AssistantSettings::temperature_for_model(
1416                            &configured_model.model,
1417                            cx,
1418                        ),
1419                    };
1420
1421                    Some(configured_model.model.count_tokens(request, cx))
1422                })
1423                .ok()
1424                .flatten()
1425            {
1426                task.await.log_err()
1427            } else {
1428                Some(0)
1429            };
1430
1431            if let Some(token_count) = token_count {
1432                this.update(cx, |this, cx| {
1433                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1434                        return;
1435                    };
1436
1437                    state.last_estimated_token_count = Some(token_count);
1438                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1439                })
1440                .ok();
1441            };
1442        }));
1443    }
1444
1445    fn toggle_context_picker(
1446        &mut self,
1447        _: &crate::ToggleContextPicker,
1448        window: &mut Window,
1449        cx: &mut Context<Self>,
1450    ) {
1451        if let Some((_, state)) = self.editing_message.as_mut() {
1452            let handle = state.context_picker_menu_handle.clone();
1453            window.defer(cx, move |window, cx| {
1454                handle.toggle(window, cx);
1455            });
1456        }
1457    }
1458
1459    fn remove_all_context(
1460        &mut self,
1461        _: &crate::RemoveAllContext,
1462        _window: &mut Window,
1463        cx: &mut Context<Self>,
1464    ) {
1465        self.context_store.update(cx, |store, _cx| store.clear());
1466        cx.notify();
1467    }
1468
1469    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1470        if let Some((_, state)) = self.editing_message.as_mut() {
1471            if state.context_picker_menu_handle.is_deployed() {
1472                cx.propagate();
1473            } else {
1474                state.context_strip.focus_handle(cx).focus(window);
1475            }
1476        }
1477    }
1478
1479    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1480        let images = cx
1481            .read_from_clipboard()
1482            .map(|item| {
1483                item.into_entries()
1484                    .filter_map(|entry| {
1485                        if let ClipboardEntry::Image(image) = entry {
1486                            Some(image)
1487                        } else {
1488                            None
1489                        }
1490                    })
1491                    .collect::<Vec<_>>()
1492            })
1493            .unwrap_or_default();
1494
1495        if images.is_empty() {
1496            return;
1497        }
1498        cx.stop_propagation();
1499
1500        self.context_store.update(cx, |store, cx| {
1501            for image in images {
1502                store.add_image_instance(Arc::new(image), cx);
1503            }
1504        });
1505    }
1506
1507    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1508        self.editing_message.take();
1509        cx.notify();
1510    }
1511
1512    fn confirm_editing_message(
1513        &mut self,
1514        _: &menu::Confirm,
1515        window: &mut Window,
1516        cx: &mut Context<Self>,
1517    ) {
1518        let Some((message_id, state)) = self.editing_message.take() else {
1519            return;
1520        };
1521
1522        let Some(model) = self
1523            .thread
1524            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1525        else {
1526            return;
1527        };
1528
1529        if model.provider.must_accept_terms(cx) {
1530            cx.notify();
1531            return;
1532        }
1533
1534        let edited_text = state.editor.read(cx).text(cx);
1535
1536        let new_context = self
1537            .context_store
1538            .read(cx)
1539            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1540
1541        let project = self.thread.read(cx).project().clone();
1542        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1543
1544        let load_context_task =
1545            crate::context::load_context(new_context, &project, &prompt_store, cx);
1546        self._load_edited_message_context_task =
1547            Some(cx.spawn_in(window, async move |this, cx| {
1548                let context = load_context_task.await;
1549                let _ = this
1550                    .update_in(cx, |this, window, cx| {
1551                        this.thread.update(cx, |thread, cx| {
1552                            thread.edit_message(
1553                                message_id,
1554                                Role::User,
1555                                vec![MessageSegment::Text(edited_text)],
1556                                Some(context.loaded_context),
1557                                cx,
1558                            );
1559                            for message_id in this.messages_after(message_id) {
1560                                thread.delete_message(*message_id, cx);
1561                            }
1562                        });
1563
1564                        this.thread.update(cx, |thread, cx| {
1565                            thread.advance_prompt_id();
1566                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1567                        });
1568                        this._load_edited_message_context_task = None;
1569                        cx.notify();
1570                    })
1571                    .log_err();
1572            }));
1573    }
1574
1575    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1576        self.messages
1577            .iter()
1578            .position(|id| *id == message_id)
1579            .map(|index| &self.messages[index + 1..])
1580            .unwrap_or(&[])
1581    }
1582
1583    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1584        self.cancel_editing_message(&menu::Cancel, window, cx);
1585    }
1586
1587    fn handle_regenerate_click(
1588        &mut self,
1589        _: &ClickEvent,
1590        window: &mut Window,
1591        cx: &mut Context<Self>,
1592    ) {
1593        self.confirm_editing_message(&menu::Confirm, window, cx);
1594    }
1595
1596    fn handle_feedback_click(
1597        &mut self,
1598        message_id: MessageId,
1599        feedback: ThreadFeedback,
1600        window: &mut Window,
1601        cx: &mut Context<Self>,
1602    ) {
1603        let report = self.thread.update(cx, |thread, cx| {
1604            thread.report_message_feedback(message_id, feedback, cx)
1605        });
1606
1607        cx.spawn(async move |this, cx| {
1608            report.await?;
1609            this.update(cx, |_this, cx| cx.notify())
1610        })
1611        .detach_and_log_err(cx);
1612
1613        match feedback {
1614            ThreadFeedback::Positive => {
1615                self.open_feedback_editors.remove(&message_id);
1616            }
1617            ThreadFeedback::Negative => {
1618                self.handle_show_feedback_comments(message_id, window, cx);
1619            }
1620        }
1621    }
1622
1623    fn handle_show_feedback_comments(
1624        &mut self,
1625        message_id: MessageId,
1626        window: &mut Window,
1627        cx: &mut Context<Self>,
1628    ) {
1629        let buffer = cx.new(|cx| {
1630            let empty_string = String::new();
1631            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1632        });
1633
1634        let editor = cx.new(|cx| {
1635            let mut editor = Editor::new(
1636                editor::EditorMode::AutoHeight { max_lines: 4 },
1637                buffer,
1638                None,
1639                window,
1640                cx,
1641            );
1642            editor.set_placeholder_text(
1643                "What went wrong? Share your feedback so we can improve.",
1644                cx,
1645            );
1646            editor
1647        });
1648
1649        editor.read(cx).focus_handle(cx).focus(window);
1650        self.open_feedback_editors.insert(message_id, editor);
1651        cx.notify();
1652    }
1653
1654    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1655        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1656            return;
1657        };
1658
1659        let report_task = self.thread.update(cx, |thread, cx| {
1660            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1661        });
1662
1663        let comments = editor.read(cx).text(cx);
1664        if !comments.is_empty() {
1665            let thread_id = self.thread.read(cx).id().clone();
1666            let comments_value = String::from(comments.as_str());
1667
1668            let message_content = self
1669                .thread
1670                .read(cx)
1671                .message(message_id)
1672                .map(|msg| msg.to_string())
1673                .unwrap_or_default();
1674
1675            telemetry::event!(
1676                "Assistant Thread Feedback Comments",
1677                thread_id,
1678                message_id = message_id.0,
1679                message_content,
1680                comments = comments_value
1681            );
1682
1683            self.open_feedback_editors.remove(&message_id);
1684
1685            cx.spawn(async move |this, cx| {
1686                report_task.await?;
1687                this.update(cx, |_this, cx| cx.notify())
1688            })
1689            .detach_and_log_err(cx);
1690        }
1691    }
1692
1693    fn render_edit_message_editor(
1694        &self,
1695        state: &EditingMessageState,
1696        _window: &mut Window,
1697        cx: &Context<Self>,
1698    ) -> impl IntoElement {
1699        let settings = ThemeSettings::get_global(cx);
1700        let font_size = TextSize::Small
1701            .rems(cx)
1702            .to_pixels(settings.agent_font_size(cx));
1703        let line_height = font_size * 1.75;
1704
1705        let colors = cx.theme().colors();
1706
1707        let text_style = TextStyle {
1708            color: colors.text,
1709            font_family: settings.buffer_font.family.clone(),
1710            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1711            font_features: settings.buffer_font.features.clone(),
1712            font_size: font_size.into(),
1713            line_height: line_height.into(),
1714            ..Default::default()
1715        };
1716
1717        v_flex()
1718            .key_context("EditMessageEditor")
1719            .on_action(cx.listener(Self::toggle_context_picker))
1720            .on_action(cx.listener(Self::remove_all_context))
1721            .on_action(cx.listener(Self::move_up))
1722            .on_action(cx.listener(Self::cancel_editing_message))
1723            .on_action(cx.listener(Self::confirm_editing_message))
1724            .capture_action(cx.listener(Self::paste))
1725            .min_h_6()
1726            .flex_grow()
1727            .w_full()
1728            .gap_2()
1729            .child(EditorElement::new(
1730                &state.editor,
1731                EditorStyle {
1732                    background: colors.editor_background,
1733                    local_player: cx.theme().players().local(),
1734                    text: text_style,
1735                    syntax: cx.theme().syntax().clone(),
1736                    ..Default::default()
1737                },
1738            ))
1739            .child(state.context_strip.clone())
1740    }
1741
1742    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1743        let message_id = self.messages[ix];
1744        let Some(message) = self.thread.read(cx).message(message_id) else {
1745            return Empty.into_any();
1746        };
1747
1748        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1749            return Empty.into_any();
1750        };
1751
1752        let workspace = self.workspace.clone();
1753        let thread = self.thread.read(cx);
1754
1755        // Get all the data we need from thread before we start using it in closures
1756        let checkpoint = thread.checkpoint_for_message(message_id);
1757        let added_context = thread
1758            .context_for_message(message_id)
1759            .map(|context| AddedContext::new_attached(context, cx))
1760            .collect::<Vec<_>>();
1761
1762        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1763        let has_tool_uses = !tool_uses.is_empty();
1764        let is_generating = thread.is_generating();
1765        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1766
1767        let is_first_message = ix == 0;
1768        let is_last_message = ix == self.messages.len() - 1;
1769
1770        let loading_dots = (is_generating_stale && is_last_message)
1771            .then(|| AnimatedLabel::new("").size(LabelSize::Small));
1772
1773        let editing_message_state = self
1774            .editing_message
1775            .as_ref()
1776            .filter(|(id, _)| *id == message_id)
1777            .map(|(_, state)| state);
1778
1779        let colors = cx.theme().colors();
1780        let editor_bg_color = colors.editor_background;
1781
1782        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::DocumentText)
1783            .icon_size(IconSize::XSmall)
1784            .icon_color(Color::Ignored)
1785            .tooltip(Tooltip::text("Open Thread as Markdown"))
1786            .on_click({
1787                let thread = self.thread.clone();
1788                let workspace = self.workspace.clone();
1789                move |_, window, cx| {
1790                    if let Some(workspace) = workspace.upgrade() {
1791                        open_active_thread_as_markdown(thread.clone(), workspace, window, cx)
1792                            .detach_and_log_err(cx);
1793                    }
1794                }
1795            });
1796
1797        // For all items that should be aligned with the LLM's response.
1798        const RESPONSE_PADDING_X: Pixels = px(19.);
1799
1800        let show_feedback = thread.is_turn_end(ix);
1801
1802        let feedback_container = h_flex()
1803            .group("feedback_container")
1804            .mt_1()
1805            .py_2()
1806            .px(RESPONSE_PADDING_X)
1807            .mr_1()
1808            .opacity(0.4)
1809            .hover(|style| style.opacity(1.))
1810            .gap_1p5()
1811            .flex_wrap()
1812            .justify_end();
1813        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1814            Some(feedback) => feedback_container
1815                .child(
1816                    div().visible_on_hover("feedback_container").child(
1817                        Label::new(match feedback {
1818                            ThreadFeedback::Positive => "Thanks for your feedback!",
1819                            ThreadFeedback::Negative => {
1820                                "We appreciate your feedback and will use it to improve."
1821                            }
1822                        })
1823                    .color(Color::Muted)
1824                    .size(LabelSize::XSmall)
1825                    .truncate())
1826                )
1827                .child(
1828                    h_flex()
1829                        .child(
1830                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1831                                .icon_size(IconSize::XSmall)
1832                                .icon_color(match feedback {
1833                                    ThreadFeedback::Positive => Color::Accent,
1834                                    ThreadFeedback::Negative => Color::Ignored,
1835                                })
1836                                .tooltip(Tooltip::text("Helpful Response"))
1837                                .on_click(cx.listener(move |this, _, window, cx| {
1838                                    this.handle_feedback_click(
1839                                        message_id,
1840                                        ThreadFeedback::Positive,
1841                                        window,
1842                                        cx,
1843                                    );
1844                                })),
1845                        )
1846                        .child(
1847                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1848                                .icon_size(IconSize::XSmall)
1849                                .icon_color(match feedback {
1850                                    ThreadFeedback::Positive => Color::Ignored,
1851                                    ThreadFeedback::Negative => Color::Accent,
1852                                })
1853                                .tooltip(Tooltip::text("Not Helpful"))
1854                                .on_click(cx.listener(move |this, _, window, cx| {
1855                                    this.handle_feedback_click(
1856                                        message_id,
1857                                        ThreadFeedback::Negative,
1858                                        window,
1859                                        cx,
1860                                    );
1861                                })),
1862                        )
1863                        .child(open_as_markdown),
1864                )
1865                .into_any_element(),
1866            None => feedback_container
1867                .child(
1868                    div().visible_on_hover("feedback_container").child(
1869                        Label::new(
1870                            "Rating the thread sends all of your current conversation to the Zed team.",
1871                        )
1872                        .color(Color::Muted)
1873                    .size(LabelSize::XSmall)
1874                    .truncate())
1875                )
1876                .child(
1877                    h_flex()
1878                        .child(
1879                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1880                                .icon_size(IconSize::XSmall)
1881                                .icon_color(Color::Ignored)
1882                                .tooltip(Tooltip::text("Helpful Response"))
1883                                .on_click(cx.listener(move |this, _, window, cx| {
1884                                    this.handle_feedback_click(
1885                                        message_id,
1886                                        ThreadFeedback::Positive,
1887                                        window,
1888                                        cx,
1889                                    );
1890                                })),
1891                        )
1892                        .child(
1893                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1894                                .icon_size(IconSize::XSmall)
1895                                .icon_color(Color::Ignored)
1896                                .tooltip(Tooltip::text("Not Helpful"))
1897                                .on_click(cx.listener(move |this, _, window, cx| {
1898                                    this.handle_feedback_click(
1899                                        message_id,
1900                                        ThreadFeedback::Negative,
1901                                        window,
1902                                        cx,
1903                                    );
1904                                })),
1905                        )
1906                        .child(open_as_markdown),
1907                )
1908                .into_any_element(),
1909        };
1910
1911        let message_is_empty = message.should_display_content();
1912        let has_content = !message_is_empty || !added_context.is_empty();
1913
1914        let message_content = has_content.then(|| {
1915            if let Some(state) = editing_message_state.as_ref() {
1916                self.render_edit_message_editor(state, window, cx)
1917                    .into_any_element()
1918            } else {
1919                v_flex()
1920                    .w_full()
1921                    .gap_1()
1922                    .when(!message_is_empty, |parent| {
1923                        parent.child(div().min_h_6().child(self.render_message_content(
1924                            message_id,
1925                            rendered_message,
1926                            has_tool_uses,
1927                            workspace.clone(),
1928                            window,
1929                            cx,
1930                        )))
1931                    })
1932                    .when(!added_context.is_empty(), |parent| {
1933                        parent.child(h_flex().flex_wrap().gap_1().children(
1934                            added_context.into_iter().map(|added_context| {
1935                                let context = added_context.handle.clone();
1936                                ContextPill::added(added_context, false, false, None).on_click(
1937                                    Rc::new(cx.listener({
1938                                        let workspace = workspace.clone();
1939                                        move |_, _, window, cx| {
1940                                            if let Some(workspace) = workspace.upgrade() {
1941                                                open_context(&context, workspace, window, cx);
1942                                                cx.notify();
1943                                            }
1944                                        }
1945                                    })),
1946                                )
1947                            }),
1948                        ))
1949                    })
1950                    .into_any_element()
1951            }
1952        });
1953
1954        let styled_message = match message.role {
1955            Role::User => v_flex()
1956                .id(("message-container", ix))
1957                .pt_2()
1958                .pl_2()
1959                .pr_2p5()
1960                .pb_4()
1961                .child(
1962                    v_flex()
1963                        .id(("user-message", ix))
1964                        .bg(editor_bg_color)
1965                        .rounded_lg()
1966                        .shadow_md()
1967                        .border_1()
1968                        .border_color(colors.border)
1969                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1970                        .cursor_pointer()
1971                        .child(
1972                            h_flex()
1973                                .p_2p5()
1974                                .gap_1()
1975                                .children(message_content)
1976                                .when_some(editing_message_state, |this, state| {
1977                                    let focus_handle = state.editor.focus_handle(cx).clone();
1978                                    this.w_full().justify_between().child(
1979                                        h_flex()
1980                                            .gap_0p5()
1981                                            .child(
1982                                                IconButton::new(
1983                                                    "cancel-edit-message",
1984                                                    IconName::Close,
1985                                                )
1986                                                .shape(ui::IconButtonShape::Square)
1987                                                .icon_color(Color::Error)
1988                                                .tooltip({
1989                                                    let focus_handle = focus_handle.clone();
1990                                                    move |window, cx| {
1991                                                        Tooltip::for_action_in(
1992                                                            "Cancel Edit",
1993                                                            &menu::Cancel,
1994                                                            &focus_handle,
1995                                                            window,
1996                                                            cx,
1997                                                        )
1998                                                    }
1999                                                })
2000                                                .on_click(cx.listener(Self::handle_cancel_click)),
2001                                            )
2002                                            .child(
2003                                                IconButton::new(
2004                                                    "confirm-edit-message",
2005                                                    IconName::Check,
2006                                                )
2007                                                .disabled(state.editor.read(cx).is_empty(cx))
2008                                                .shape(ui::IconButtonShape::Square)
2009                                                .icon_color(Color::Success)
2010                                                .tooltip({
2011                                                    let focus_handle = focus_handle.clone();
2012                                                    move |window, cx| {
2013                                                        Tooltip::for_action_in(
2014                                                            "Regenerate",
2015                                                            &menu::Confirm,
2016                                                            &focus_handle,
2017                                                            window,
2018                                                            cx,
2019                                                        )
2020                                                    }
2021                                                })
2022                                                .on_click(
2023                                                    cx.listener(Self::handle_regenerate_click),
2024                                                ),
2025                                            ),
2026                                    )
2027                                }),
2028                        )
2029                        .when(editing_message_state.is_none(), |this| {
2030                            this.tooltip(Tooltip::text("Click To Edit"))
2031                        })
2032                        .on_click(cx.listener({
2033                            let message_segments = message.segments.clone();
2034                            move |this, _, window, cx| {
2035                                this.start_editing_message(
2036                                    message_id,
2037                                    &message_segments,
2038                                    window,
2039                                    cx,
2040                                );
2041                            }
2042                        })),
2043                ),
2044            Role::Assistant => v_flex()
2045                .id(("message-container", ix))
2046                .px(RESPONSE_PADDING_X)
2047                .gap_2()
2048                .children(message_content)
2049                .when(has_tool_uses, |parent| {
2050                    parent.children(tool_uses.into_iter().map(|tool_use| {
2051                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2052                    }))
2053                }),
2054            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2055                v_flex()
2056                    .bg(colors.editor_background)
2057                    .rounded_sm()
2058                    .child(div().p_4().children(message_content)),
2059            ),
2060        };
2061
2062        let after_editing_message = self
2063            .editing_message
2064            .as_ref()
2065            .map_or(false, |(editing_message_id, _)| {
2066                message_id > *editing_message_id
2067            });
2068
2069        let panel_background = cx.theme().colors().panel_background;
2070
2071        v_flex()
2072            .w_full()
2073            .map(|parent| {
2074                if let Some(checkpoint) = checkpoint.filter(|_| !is_generating) {
2075                    let mut is_pending = false;
2076                    let mut error = None;
2077                    if let Some(last_restore_checkpoint) =
2078                        self.thread.read(cx).last_restore_checkpoint()
2079                    {
2080                        if last_restore_checkpoint.message_id() == message_id {
2081                            match last_restore_checkpoint {
2082                                LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2083                                LastRestoreCheckpoint::Error { error: err, .. } => {
2084                                    error = Some(err.clone());
2085                                }
2086                            }
2087                        }
2088                    }
2089
2090                    let restore_checkpoint_button =
2091                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2092                            .icon(if error.is_some() {
2093                                IconName::XCircle
2094                            } else {
2095                                IconName::Undo
2096                            })
2097                            .icon_size(IconSize::XSmall)
2098                            .icon_position(IconPosition::Start)
2099                            .icon_color(if error.is_some() {
2100                                Some(Color::Error)
2101                            } else {
2102                                None
2103                            })
2104                            .label_size(LabelSize::XSmall)
2105                            .disabled(is_pending)
2106                            .on_click(cx.listener(move |this, _, _window, cx| {
2107                                this.thread.update(cx, |thread, cx| {
2108                                    thread
2109                                        .restore_checkpoint(checkpoint.clone(), cx)
2110                                        .detach_and_log_err(cx);
2111                                });
2112                            }));
2113
2114                    let restore_checkpoint_button = if is_pending {
2115                        restore_checkpoint_button
2116                            .with_animation(
2117                                ("pulsating-restore-checkpoint-button", ix),
2118                                Animation::new(Duration::from_secs(2))
2119                                    .repeat()
2120                                    .with_easing(pulsating_between(0.6, 1.)),
2121                                |label, delta| label.alpha(delta),
2122                            )
2123                            .into_any_element()
2124                    } else if let Some(error) = error {
2125                        restore_checkpoint_button
2126                            .tooltip(Tooltip::text(error.to_string()))
2127                            .into_any_element()
2128                    } else {
2129                        restore_checkpoint_button.into_any_element()
2130                    };
2131
2132                    parent.child(
2133                        h_flex()
2134                            .pt_2p5()
2135                            .px_2p5()
2136                            .w_full()
2137                            .gap_1()
2138                            .child(ui::Divider::horizontal())
2139                            .child(restore_checkpoint_button)
2140                            .child(ui::Divider::horizontal()),
2141                    )
2142                } else {
2143                    parent
2144                }
2145            })
2146            .when(is_first_message, |parent| {
2147                parent.child(self.render_rules_item(cx))
2148            })
2149            .child(styled_message)
2150            .when(is_generating && is_last_message, |this| {
2151                this.child(
2152                    h_flex()
2153                        .h_8()
2154                        .mt_2()
2155                        .mb_4()
2156                        .ml_4()
2157                        .py_1p5()
2158                        .when_some(loading_dots, |this, loading_dots| this.child(loading_dots)),
2159                )
2160            })
2161            .when(show_feedback, move |parent| {
2162                parent.child(feedback_items).when_some(
2163                    self.open_feedback_editors.get(&message_id),
2164                    move |parent, feedback_editor| {
2165                        let focus_handle = feedback_editor.focus_handle(cx);
2166                        parent.child(
2167                            v_flex()
2168                                .key_context("AgentFeedbackMessageEditor")
2169                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2170                                    this.open_feedback_editors.remove(&message_id);
2171                                    cx.notify();
2172                                }))
2173                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2174                                    this.submit_feedback_message(message_id, cx);
2175                                    cx.notify();
2176                                }))
2177                                .on_action(cx.listener(Self::confirm_editing_message))
2178                                .mb_2()
2179                                .mx_4()
2180                                .p_2()
2181                                .rounded_md()
2182                                .border_1()
2183                                .border_color(cx.theme().colors().border)
2184                                .bg(cx.theme().colors().editor_background)
2185                                .child(feedback_editor.clone())
2186                                .child(
2187                                    h_flex()
2188                                        .gap_1()
2189                                        .justify_end()
2190                                        .child(
2191                                            Button::new("dismiss-feedback-message", "Cancel")
2192                                                .label_size(LabelSize::Small)
2193                                                .key_binding(
2194                                                    KeyBinding::for_action_in(
2195                                                        &menu::Cancel,
2196                                                        &focus_handle,
2197                                                        window,
2198                                                        cx,
2199                                                    )
2200                                                    .map(|kb| kb.size(rems_from_px(10.))),
2201                                                )
2202                                                .on_click(cx.listener(
2203                                                    move |this, _, _window, cx| {
2204                                                        this.open_feedback_editors
2205                                                            .remove(&message_id);
2206                                                        cx.notify();
2207                                                    },
2208                                                )),
2209                                        )
2210                                        .child(
2211                                            Button::new(
2212                                                "submit-feedback-message",
2213                                                "Share Feedback",
2214                                            )
2215                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2216                                            .label_size(LabelSize::Small)
2217                                            .key_binding(
2218                                                KeyBinding::for_action_in(
2219                                                    &menu::Confirm,
2220                                                    &focus_handle,
2221                                                    window,
2222                                                    cx,
2223                                                )
2224                                                .map(|kb| kb.size(rems_from_px(10.))),
2225                                            )
2226                                            .on_click(
2227                                                cx.listener(move |this, _, _window, cx| {
2228                                                    this.submit_feedback_message(message_id, cx);
2229                                                    cx.notify()
2230                                                }),
2231                                            ),
2232                                        ),
2233                                ),
2234                        )
2235                    },
2236                )
2237            })
2238            .when(after_editing_message, |parent| {
2239                // Backdrop to dim out the whole thread below the editing user message
2240                parent.relative().child(
2241                    div()
2242                        .occlude()
2243                        .absolute()
2244                        .inset_0()
2245                        .size_full()
2246                        .bg(panel_background)
2247                        .opacity(0.8),
2248                )
2249            })
2250            .into_any()
2251    }
2252
2253    fn render_message_content(
2254        &self,
2255        message_id: MessageId,
2256        rendered_message: &RenderedMessage,
2257        has_tool_uses: bool,
2258        workspace: WeakEntity<Workspace>,
2259        window: &Window,
2260        cx: &Context<Self>,
2261    ) -> impl IntoElement {
2262        let is_last_message = self.messages.last() == Some(&message_id);
2263        let is_generating = self.thread.read(cx).is_generating();
2264        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2265            rendered_message
2266                .segments
2267                .iter()
2268                .enumerate()
2269                .next_back()
2270                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2271                .map(|(index, _)| index)
2272        } else {
2273            None
2274        };
2275
2276        let message_role = self
2277            .thread
2278            .read(cx)
2279            .message(message_id)
2280            .map(|m| m.role)
2281            .unwrap_or(Role::User);
2282
2283        let is_assistant_message = message_role == Role::Assistant;
2284        let is_user_message = message_role == Role::User;
2285
2286        v_flex()
2287            .text_ui(cx)
2288            .gap_2()
2289            .when(is_user_message, |this| this.text_xs())
2290            .children(
2291                rendered_message.segments.iter().enumerate().map(
2292                    |(index, segment)| match segment {
2293                        RenderedMessageSegment::Thinking {
2294                            content,
2295                            scroll_handle,
2296                        } => self
2297                            .render_message_thinking_segment(
2298                                message_id,
2299                                index,
2300                                content.clone(),
2301                                &scroll_handle,
2302                                Some(index) == pending_thinking_segment_index,
2303                                window,
2304                                cx,
2305                            )
2306                            .into_any_element(),
2307                        RenderedMessageSegment::Text(markdown) => {
2308                            let markdown_element = MarkdownElement::new(
2309                                markdown.clone(),
2310                                if is_user_message {
2311                                    let mut style = default_markdown_style(window, cx);
2312                                    let mut text_style = window.text_style();
2313                                    let theme_settings = ThemeSettings::get_global(cx);
2314
2315                                    let buffer_font = theme_settings.buffer_font.family.clone();
2316                                    let buffer_font_size = TextSize::Small.rems(cx);
2317
2318                                    text_style.refine(&TextStyleRefinement {
2319                                        font_family: Some(buffer_font),
2320                                        font_size: Some(buffer_font_size.into()),
2321                                        ..Default::default()
2322                                    });
2323
2324                                    style.base_text_style = text_style;
2325                                    style
2326                                } else {
2327                                    default_markdown_style(window, cx)
2328                                },
2329                            );
2330
2331                            let markdown_element = if is_assistant_message {
2332                                markdown_element.code_block_renderer(
2333                                    markdown::CodeBlockRenderer::Custom {
2334                                        render: Arc::new({
2335                                            let workspace = workspace.clone();
2336                                            let active_thread = cx.entity();
2337                                            move |kind,
2338                                                  parsed_markdown,
2339                                                  range,
2340                                                  metadata,
2341                                                  window,
2342                                                  cx| {
2343                                                render_markdown_code_block(
2344                                                    message_id,
2345                                                    range.start,
2346                                                    kind,
2347                                                    parsed_markdown,
2348                                                    metadata,
2349                                                    active_thread.clone(),
2350                                                    workspace.clone(),
2351                                                    window,
2352                                                    cx,
2353                                                )
2354                                            }
2355                                        }),
2356                                        transform: Some(Arc::new({
2357                                            let active_thread = cx.entity();
2358                                            let editor_bg = cx.theme().colors().editor_background;
2359
2360                                            move |el, range, metadata, _, cx| {
2361                                                let is_expanded = active_thread
2362                                                    .read(cx)
2363                                                    .expanded_code_blocks
2364                                                    .get(&(message_id, range.start))
2365                                                    .copied()
2366                                                    .unwrap_or(true);
2367
2368                                                if is_expanded
2369                                                    || metadata.line_count
2370                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2371                                                {
2372                                                    return el;
2373                                                }
2374                                                el.child(
2375                                                    div()
2376                                                        .absolute()
2377                                                        .bottom_0()
2378                                                        .left_0()
2379                                                        .w_full()
2380                                                        .h_1_4()
2381                                                        .rounded_b_lg()
2382                                                        .bg(linear_gradient(
2383                                                            0.,
2384                                                            linear_color_stop(editor_bg, 0.),
2385                                                            linear_color_stop(
2386                                                                editor_bg.opacity(0.),
2387                                                                1.,
2388                                                            ),
2389                                                        )),
2390                                                )
2391                                            }
2392                                        })),
2393                                    },
2394                                )
2395                            } else {
2396                                markdown_element.code_block_renderer(
2397                                    markdown::CodeBlockRenderer::Default {
2398                                        copy_button: false,
2399                                        border: true,
2400                                    },
2401                                )
2402                            };
2403
2404                            div()
2405                                .child(markdown_element.on_url_click({
2406                                    let workspace = self.workspace.clone();
2407                                    move |text, window, cx| {
2408                                        open_markdown_link(text, workspace.clone(), window, cx);
2409                                    }
2410                                }))
2411                                .into_any_element()
2412                        }
2413                    },
2414                ),
2415            )
2416    }
2417
2418    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2419        cx.theme().colors().border.opacity(0.5)
2420    }
2421
2422    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2423        cx.theme()
2424            .colors()
2425            .element_background
2426            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2427    }
2428
2429    fn render_message_thinking_segment(
2430        &self,
2431        message_id: MessageId,
2432        ix: usize,
2433        markdown: Entity<Markdown>,
2434        scroll_handle: &ScrollHandle,
2435        pending: bool,
2436        window: &Window,
2437        cx: &Context<Self>,
2438    ) -> impl IntoElement {
2439        let is_open = self
2440            .expanded_thinking_segments
2441            .get(&(message_id, ix))
2442            .copied()
2443            .unwrap_or_default();
2444
2445        let editor_bg = cx.theme().colors().panel_background;
2446
2447        div().map(|this| {
2448            if pending {
2449                this.v_flex()
2450                    .mt_neg_2()
2451                    .mb_1p5()
2452                    .child(
2453                        h_flex()
2454                            .group("disclosure-header")
2455                            .justify_between()
2456                            .child(
2457                                h_flex()
2458                                    .gap_1p5()
2459                                    .child(
2460                                        Icon::new(IconName::LightBulb)
2461                                            .size(IconSize::XSmall)
2462                                            .color(Color::Muted),
2463                                    )
2464                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2465                            )
2466                            .child(
2467                                h_flex()
2468                                    .gap_1()
2469                                    .child(
2470                                        div().visible_on_hover("disclosure-header").child(
2471                                            Disclosure::new("thinking-disclosure", is_open)
2472                                                .opened_icon(IconName::ChevronUp)
2473                                                .closed_icon(IconName::ChevronDown)
2474                                                .on_click(cx.listener({
2475                                                    move |this, _event, _window, _cx| {
2476                                                        let is_open = this
2477                                                            .expanded_thinking_segments
2478                                                            .entry((message_id, ix))
2479                                                            .or_insert(false);
2480
2481                                                        *is_open = !*is_open;
2482                                                    }
2483                                                })),
2484                                        ),
2485                                    )
2486                                    .child({
2487                                        Icon::new(IconName::ArrowCircle)
2488                                            .color(Color::Accent)
2489                                            .size(IconSize::Small)
2490                                            .with_animation(
2491                                                "arrow-circle",
2492                                                Animation::new(Duration::from_secs(2)).repeat(),
2493                                                |icon, delta| {
2494                                                    icon.transform(Transformation::rotate(
2495                                                        percentage(delta),
2496                                                    ))
2497                                                },
2498                                            )
2499                                    }),
2500                            ),
2501                    )
2502                    .when(!is_open, |this| {
2503                        let gradient_overlay = div()
2504                            .rounded_b_lg()
2505                            .h_full()
2506                            .absolute()
2507                            .w_full()
2508                            .bottom_0()
2509                            .left_0()
2510                            .bg(linear_gradient(
2511                                180.,
2512                                linear_color_stop(editor_bg, 1.),
2513                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2514                            ));
2515
2516                        this.child(
2517                            div()
2518                                .relative()
2519                                .bg(editor_bg)
2520                                .rounded_b_lg()
2521                                .mt_2()
2522                                .pl_4()
2523                                .child(
2524                                    div()
2525                                        .id(("thinking-content", ix))
2526                                        .max_h_20()
2527                                        .track_scroll(scroll_handle)
2528                                        .text_ui_sm(cx)
2529                                        .overflow_hidden()
2530                                        .child(
2531                                            MarkdownElement::new(
2532                                                markdown.clone(),
2533                                                default_markdown_style(window, cx),
2534                                            )
2535                                            .on_url_click({
2536                                                let workspace = self.workspace.clone();
2537                                                move |text, window, cx| {
2538                                                    open_markdown_link(
2539                                                        text,
2540                                                        workspace.clone(),
2541                                                        window,
2542                                                        cx,
2543                                                    );
2544                                                }
2545                                            }),
2546                                        ),
2547                                )
2548                                .child(gradient_overlay),
2549                        )
2550                    })
2551                    .when(is_open, |this| {
2552                        this.child(
2553                            div()
2554                                .id(("thinking-content", ix))
2555                                .h_full()
2556                                .bg(editor_bg)
2557                                .text_ui_sm(cx)
2558                                .child(
2559                                    MarkdownElement::new(
2560                                        markdown.clone(),
2561                                        default_markdown_style(window, cx),
2562                                    )
2563                                    .on_url_click({
2564                                        let workspace = self.workspace.clone();
2565                                        move |text, window, cx| {
2566                                            open_markdown_link(text, workspace.clone(), window, cx);
2567                                        }
2568                                    }),
2569                                ),
2570                        )
2571                    })
2572            } else {
2573                this.v_flex()
2574                    .mt_neg_2()
2575                    .child(
2576                        h_flex()
2577                            .group("disclosure-header")
2578                            .pr_1()
2579                            .justify_between()
2580                            .opacity(0.8)
2581                            .hover(|style| style.opacity(1.))
2582                            .child(
2583                                h_flex()
2584                                    .gap_1p5()
2585                                    .child(
2586                                        Icon::new(IconName::LightBulb)
2587                                            .size(IconSize::XSmall)
2588                                            .color(Color::Muted),
2589                                    )
2590                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2591                            )
2592                            .child(
2593                                div().visible_on_hover("disclosure-header").child(
2594                                    Disclosure::new("thinking-disclosure", is_open)
2595                                        .opened_icon(IconName::ChevronUp)
2596                                        .closed_icon(IconName::ChevronDown)
2597                                        .on_click(cx.listener({
2598                                            move |this, _event, _window, _cx| {
2599                                                let is_open = this
2600                                                    .expanded_thinking_segments
2601                                                    .entry((message_id, ix))
2602                                                    .or_insert(false);
2603
2604                                                *is_open = !*is_open;
2605                                            }
2606                                        })),
2607                                ),
2608                            ),
2609                    )
2610                    .child(
2611                        div()
2612                            .id(("thinking-content", ix))
2613                            .relative()
2614                            .mt_1p5()
2615                            .ml_1p5()
2616                            .pl_2p5()
2617                            .border_l_1()
2618                            .border_color(cx.theme().colors().border_variant)
2619                            .text_ui_sm(cx)
2620                            .when(is_open, |this| {
2621                                this.child(
2622                                    MarkdownElement::new(
2623                                        markdown.clone(),
2624                                        default_markdown_style(window, cx),
2625                                    )
2626                                    .on_url_click({
2627                                        let workspace = self.workspace.clone();
2628                                        move |text, window, cx| {
2629                                            open_markdown_link(text, workspace.clone(), window, cx);
2630                                        }
2631                                    }),
2632                                )
2633                            }),
2634                    )
2635            }
2636        })
2637    }
2638
2639    fn render_tool_use(
2640        &self,
2641        tool_use: ToolUse,
2642        window: &mut Window,
2643        workspace: WeakEntity<Workspace>,
2644        cx: &mut Context<Self>,
2645    ) -> impl IntoElement + use<> {
2646        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2647            return card.render(&tool_use.status, window, workspace, cx);
2648        }
2649
2650        let is_open = self
2651            .expanded_tool_uses
2652            .get(&tool_use.id)
2653            .copied()
2654            .unwrap_or_default();
2655
2656        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2657
2658        let fs = self
2659            .workspace
2660            .upgrade()
2661            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2662        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2663        let needs_confirmation_tools = tool_use.needs_confirmation;
2664
2665        let status_icons = div().child(match &tool_use.status {
2666            ToolUseStatus::NeedsConfirmation => {
2667                let icon = Icon::new(IconName::Warning)
2668                    .color(Color::Warning)
2669                    .size(IconSize::Small);
2670                icon.into_any_element()
2671            }
2672            ToolUseStatus::Pending
2673            | ToolUseStatus::InputStillStreaming
2674            | ToolUseStatus::Running => {
2675                let icon = Icon::new(IconName::ArrowCircle)
2676                    .color(Color::Accent)
2677                    .size(IconSize::Small);
2678                icon.with_animation(
2679                    "arrow-circle",
2680                    Animation::new(Duration::from_secs(2)).repeat(),
2681                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2682                )
2683                .into_any_element()
2684            }
2685            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2686            ToolUseStatus::Error(_) => {
2687                let icon = Icon::new(IconName::Close)
2688                    .color(Color::Error)
2689                    .size(IconSize::Small);
2690                icon.into_any_element()
2691            }
2692        });
2693
2694        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2695        let results_content_container = || v_flex().p_2().gap_0p5();
2696
2697        let results_content = v_flex()
2698            .gap_1()
2699            .child(
2700                results_content_container()
2701                    .child(
2702                        Label::new("Input")
2703                            .size(LabelSize::XSmall)
2704                            .color(Color::Muted)
2705                            .buffer_font(cx),
2706                    )
2707                    .child(
2708                        div()
2709                            .w_full()
2710                            .text_ui_sm(cx)
2711                            .children(rendered_tool_use.as_ref().map(|rendered| {
2712                                MarkdownElement::new(
2713                                    rendered.input.clone(),
2714                                    tool_use_markdown_style(window, cx),
2715                                )
2716                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2717                                    copy_button: false,
2718                                    border: false,
2719                                })
2720                                .on_url_click({
2721                                    let workspace = self.workspace.clone();
2722                                    move |text, window, cx| {
2723                                        open_markdown_link(text, workspace.clone(), window, cx);
2724                                    }
2725                                })
2726                            })),
2727                    ),
2728            )
2729            .map(|container| match tool_use.status {
2730                ToolUseStatus::Finished(_) => container.child(
2731                    results_content_container()
2732                        .border_t_1()
2733                        .border_color(self.tool_card_border_color(cx))
2734                        .child(
2735                            Label::new("Result")
2736                                .size(LabelSize::XSmall)
2737                                .color(Color::Muted)
2738                                .buffer_font(cx),
2739                        )
2740                        .child(div().w_full().text_ui_sm(cx).children(
2741                            rendered_tool_use.as_ref().map(|rendered| {
2742                                MarkdownElement::new(
2743                                    rendered.output.clone(),
2744                                    tool_use_markdown_style(window, cx),
2745                                )
2746                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2747                                    copy_button: false,
2748                                    border: false,
2749                                })
2750                                .on_url_click({
2751                                    let workspace = self.workspace.clone();
2752                                    move |text, window, cx| {
2753                                        open_markdown_link(text, workspace.clone(), window, cx);
2754                                    }
2755                                })
2756                                .into_any_element()
2757                            }),
2758                        )),
2759                ),
2760                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2761                    results_content_container()
2762                        .border_t_1()
2763                        .border_color(self.tool_card_border_color(cx))
2764                        .child(
2765                            h_flex()
2766                                .gap_1()
2767                                .child(
2768                                    Icon::new(IconName::ArrowCircle)
2769                                        .size(IconSize::Small)
2770                                        .color(Color::Accent)
2771                                        .with_animation(
2772                                            "arrow-circle",
2773                                            Animation::new(Duration::from_secs(2)).repeat(),
2774                                            |icon, delta| {
2775                                                icon.transform(Transformation::rotate(percentage(
2776                                                    delta,
2777                                                )))
2778                                            },
2779                                        ),
2780                                )
2781                                .child(
2782                                    Label::new("Running…")
2783                                        .size(LabelSize::XSmall)
2784                                        .color(Color::Muted)
2785                                        .buffer_font(cx),
2786                                ),
2787                        ),
2788                ),
2789                ToolUseStatus::Error(_) => container.child(
2790                    results_content_container()
2791                        .border_t_1()
2792                        .border_color(self.tool_card_border_color(cx))
2793                        .child(
2794                            Label::new("Error")
2795                                .size(LabelSize::XSmall)
2796                                .color(Color::Muted)
2797                                .buffer_font(cx),
2798                        )
2799                        .child(
2800                            div()
2801                                .text_ui_sm(cx)
2802                                .children(rendered_tool_use.as_ref().map(|rendered| {
2803                                    MarkdownElement::new(
2804                                        rendered.output.clone(),
2805                                        tool_use_markdown_style(window, cx),
2806                                    )
2807                                    .on_url_click({
2808                                        let workspace = self.workspace.clone();
2809                                        move |text, window, cx| {
2810                                            open_markdown_link(text, workspace.clone(), window, cx);
2811                                        }
2812                                    })
2813                                    .into_any_element()
2814                                })),
2815                        ),
2816                ),
2817                ToolUseStatus::Pending => container,
2818                ToolUseStatus::NeedsConfirmation => container.child(
2819                    results_content_container()
2820                        .border_t_1()
2821                        .border_color(self.tool_card_border_color(cx))
2822                        .child(
2823                            Label::new("Asking Permission")
2824                                .size(LabelSize::Small)
2825                                .color(Color::Muted)
2826                                .buffer_font(cx),
2827                        ),
2828                ),
2829            });
2830
2831        let gradient_overlay = |color: Hsla| {
2832            div()
2833                .h_full()
2834                .absolute()
2835                .w_12()
2836                .bottom_0()
2837                .map(|element| {
2838                    if is_status_finished {
2839                        element.right_6()
2840                    } else {
2841                        element.right(px(44.))
2842                    }
2843                })
2844                .bg(linear_gradient(
2845                    90.,
2846                    linear_color_stop(color, 1.),
2847                    linear_color_stop(color.opacity(0.2), 0.),
2848                ))
2849        };
2850
2851        v_flex().gap_1().mb_2().map(|element| {
2852            if !needs_confirmation_tools {
2853                element.child(
2854                    v_flex()
2855                        .child(
2856                            h_flex()
2857                                .group("disclosure-header")
2858                                .relative()
2859                                .gap_1p5()
2860                                .justify_between()
2861                                .opacity(0.8)
2862                                .hover(|style| style.opacity(1.))
2863                                .when(!is_status_finished, |this| this.pr_2())
2864                                .child(
2865                                    h_flex()
2866                                        .id("tool-label-container")
2867                                        .gap_1p5()
2868                                        .max_w_full()
2869                                        .overflow_x_scroll()
2870                                        .child(
2871                                            Icon::new(tool_use.icon)
2872                                                .size(IconSize::XSmall)
2873                                                .color(Color::Muted),
2874                                        )
2875                                        .child(
2876                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2877                                                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| {
2878                                                    open_markdown_link(text, workspace.clone(), window, cx);
2879                                                }}))
2880                                            ),
2881                                        ),
2882                                )
2883                                .child(
2884                                    h_flex()
2885                                        .gap_1()
2886                                        .child(
2887                                            div().visible_on_hover("disclosure-header").child(
2888                                                Disclosure::new("tool-use-disclosure", is_open)
2889                                                    .opened_icon(IconName::ChevronUp)
2890                                                    .closed_icon(IconName::ChevronDown)
2891                                                    .on_click(cx.listener({
2892                                                        let tool_use_id = tool_use.id.clone();
2893                                                        move |this, _event, _window, _cx| {
2894                                                            let is_open = this
2895                                                                .expanded_tool_uses
2896                                                                .entry(tool_use_id.clone())
2897                                                                .or_insert(false);
2898
2899                                                            *is_open = !*is_open;
2900                                                        }
2901                                                    })),
2902                                            ),
2903                                        )
2904                                        .child(status_icons),
2905                                )
2906                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2907                        )
2908                        .map(|parent| {
2909                            if !is_open {
2910                                return parent;
2911                            }
2912
2913                            parent.child(
2914                                v_flex()
2915                                    .mt_1()
2916                                    .border_1()
2917                                    .border_color(self.tool_card_border_color(cx))
2918                                    .bg(cx.theme().colors().editor_background)
2919                                    .rounded_lg()
2920                                    .child(results_content),
2921                            )
2922                        }),
2923                )
2924            } else {
2925                v_flex()
2926                    .mb_2()
2927                    .rounded_lg()
2928                    .border_1()
2929                    .border_color(self.tool_card_border_color(cx))
2930                    .overflow_hidden()
2931                    .child(
2932                        h_flex()
2933                            .group("disclosure-header")
2934                            .relative()
2935                            .justify_between()
2936                            .py_1()
2937                            .map(|element| {
2938                                if is_status_finished {
2939                                    element.pl_2().pr_0p5()
2940                                } else {
2941                                    element.px_2()
2942                                }
2943                            })
2944                            .bg(self.tool_card_header_bg(cx))
2945                            .map(|element| {
2946                                if is_open {
2947                                    element.border_b_1().rounded_t_md()
2948                                } else if needs_confirmation {
2949                                    element.rounded_t_md()
2950                                } else {
2951                                    element.rounded_md()
2952                                }
2953                            })
2954                            .border_color(self.tool_card_border_color(cx))
2955                            .child(
2956                                h_flex()
2957                                    .id("tool-label-container")
2958                                    .gap_1p5()
2959                                    .max_w_full()
2960                                    .overflow_x_scroll()
2961                                    .child(
2962                                        Icon::new(tool_use.icon)
2963                                            .size(IconSize::XSmall)
2964                                            .color(Color::Muted),
2965                                    )
2966                                    .child(
2967                                        h_flex().pr_8().text_ui_sm(cx).children(
2968                                            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| {
2969                                                open_markdown_link(text, workspace.clone(), window, cx);
2970                                            }}))
2971                                        ),
2972                                    ),
2973                            )
2974                            .child(
2975                                h_flex()
2976                                    .gap_1()
2977                                    .child(
2978                                        div().visible_on_hover("disclosure-header").child(
2979                                            Disclosure::new("tool-use-disclosure", is_open)
2980                                                .opened_icon(IconName::ChevronUp)
2981                                                .closed_icon(IconName::ChevronDown)
2982                                                .on_click(cx.listener({
2983                                                    let tool_use_id = tool_use.id.clone();
2984                                                    move |this, _event, _window, _cx| {
2985                                                        let is_open = this
2986                                                            .expanded_tool_uses
2987                                                            .entry(tool_use_id.clone())
2988                                                            .or_insert(false);
2989
2990                                                        *is_open = !*is_open;
2991                                                    }
2992                                                })),
2993                                        ),
2994                                    )
2995                                    .child(status_icons),
2996                            )
2997                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
2998                    )
2999                    .map(|parent| {
3000                        if !is_open {
3001                            return parent;
3002                        }
3003
3004                        parent.child(
3005                            v_flex()
3006                                .bg(cx.theme().colors().editor_background)
3007                                .map(|element| {
3008                                    if  needs_confirmation {
3009                                        element.rounded_none()
3010                                    } else {
3011                                        element.rounded_b_lg()
3012                                    }
3013                                })
3014                                .child(results_content),
3015                        )
3016                    })
3017                    .when(needs_confirmation, |this| {
3018                        this.child(
3019                            h_flex()
3020                                .py_1()
3021                                .pl_2()
3022                                .pr_1()
3023                                .gap_1()
3024                                .justify_between()
3025                                .bg(cx.theme().colors().editor_background)
3026                                .border_t_1()
3027                                .border_color(self.tool_card_border_color(cx))
3028                                .rounded_b_lg()
3029                                .child(
3030                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3031                                )
3032                                .child(
3033                                    h_flex()
3034                                        .gap_0p5()
3035                                        .child({
3036                                            let tool_id = tool_use.id.clone();
3037                                            Button::new(
3038                                                "always-allow-tool-action",
3039                                                "Always Allow",
3040                                            )
3041                                            .label_size(LabelSize::Small)
3042                                            .icon(IconName::CheckDouble)
3043                                            .icon_position(IconPosition::Start)
3044                                            .icon_size(IconSize::Small)
3045                                            .icon_color(Color::Success)
3046                                            .tooltip(move |window, cx|  {
3047                                                Tooltip::with_meta(
3048                                                    "Never ask for permission",
3049                                                    None,
3050                                                    "Restore the original behavior in your Agent Panel settings",
3051                                                    window,
3052                                                    cx,
3053                                                )
3054                                            })
3055                                            .on_click(cx.listener(
3056                                                move |this, event, window, cx| {
3057                                                    if let Some(fs) = fs.clone() {
3058                                                        update_settings_file::<AssistantSettings>(
3059                                                            fs.clone(),
3060                                                            cx,
3061                                                            |settings, _| {
3062                                                                settings.set_always_allow_tool_actions(true);
3063                                                            },
3064                                                        );
3065                                                    }
3066                                                    this.handle_allow_tool(
3067                                                        tool_id.clone(),
3068                                                        event,
3069                                                        window,
3070                                                        cx,
3071                                                    )
3072                                                },
3073                                            ))
3074                                        })
3075                                        .child(ui::Divider::vertical())
3076                                        .child({
3077                                            let tool_id = tool_use.id.clone();
3078                                            Button::new("allow-tool-action", "Allow")
3079                                                .label_size(LabelSize::Small)
3080                                                .icon(IconName::Check)
3081                                                .icon_position(IconPosition::Start)
3082                                                .icon_size(IconSize::Small)
3083                                                .icon_color(Color::Success)
3084                                                .on_click(cx.listener(
3085                                                    move |this, event, window, cx| {
3086                                                        this.handle_allow_tool(
3087                                                            tool_id.clone(),
3088                                                            event,
3089                                                            window,
3090                                                            cx,
3091                                                        )
3092                                                    },
3093                                                ))
3094                                        })
3095                                        .child({
3096                                            let tool_id = tool_use.id.clone();
3097                                            let tool_name: Arc<str> = tool_use.name.into();
3098                                            Button::new("deny-tool", "Deny")
3099                                                .label_size(LabelSize::Small)
3100                                                .icon(IconName::Close)
3101                                                .icon_position(IconPosition::Start)
3102                                                .icon_size(IconSize::Small)
3103                                                .icon_color(Color::Error)
3104                                                .on_click(cx.listener(
3105                                                    move |this, event, window, cx| {
3106                                                        this.handle_deny_tool(
3107                                                            tool_id.clone(),
3108                                                            tool_name.clone(),
3109                                                            event,
3110                                                            window,
3111                                                            cx,
3112                                                        )
3113                                                    },
3114                                                ))
3115                                        }),
3116                                ),
3117                        )
3118                    })
3119            }
3120        }).into_any_element()
3121    }
3122
3123    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3124        let project_context = self.thread.read(cx).project_context();
3125        let project_context = project_context.borrow();
3126        let Some(project_context) = project_context.as_ref() else {
3127            return div().into_any();
3128        };
3129
3130        let user_rules_text = if project_context.user_rules.is_empty() {
3131            None
3132        } else if project_context.user_rules.len() == 1 {
3133            let user_rules = &project_context.user_rules[0];
3134
3135            match user_rules.title.as_ref() {
3136                Some(title) => Some(format!("Using \"{title}\" user rule")),
3137                None => Some("Using user rule".into()),
3138            }
3139        } else {
3140            Some(format!(
3141                "Using {} user rules",
3142                project_context.user_rules.len()
3143            ))
3144        };
3145
3146        let first_user_rules_id = project_context
3147            .user_rules
3148            .first()
3149            .map(|user_rules| user_rules.uuid.0);
3150
3151        let rules_files = project_context
3152            .worktrees
3153            .iter()
3154            .filter_map(|worktree| worktree.rules_file.as_ref())
3155            .collect::<Vec<_>>();
3156
3157        let rules_file_text = match rules_files.as_slice() {
3158            &[] => None,
3159            &[rules_file] => Some(format!(
3160                "Using project {:?} file",
3161                rules_file.path_in_worktree
3162            )),
3163            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3164        };
3165
3166        if user_rules_text.is_none() && rules_file_text.is_none() {
3167            return div().into_any();
3168        }
3169
3170        v_flex()
3171            .pt_2()
3172            .px_2p5()
3173            .gap_1()
3174            .when_some(user_rules_text, |parent, user_rules_text| {
3175                parent.child(
3176                    h_flex()
3177                        .w_full()
3178                        .child(
3179                            Icon::new(RULES_ICON)
3180                                .size(IconSize::XSmall)
3181                                .color(Color::Disabled),
3182                        )
3183                        .child(
3184                            Label::new(user_rules_text)
3185                                .size(LabelSize::XSmall)
3186                                .color(Color::Muted)
3187                                .truncate()
3188                                .buffer_font(cx)
3189                                .ml_1p5()
3190                                .mr_0p5(),
3191                        )
3192                        .child(
3193                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3194                                .shape(ui::IconButtonShape::Square)
3195                                .icon_size(IconSize::XSmall)
3196                                .icon_color(Color::Ignored)
3197                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3198                                .tooltip(Tooltip::text("View User Rules"))
3199                                .on_click(move |_event, window, cx| {
3200                                    window.dispatch_action(
3201                                        Box::new(OpenRulesLibrary {
3202                                            prompt_to_select: first_user_rules_id,
3203                                        }),
3204                                        cx,
3205                                    )
3206                                }),
3207                        ),
3208                )
3209            })
3210            .when_some(rules_file_text, |parent, rules_file_text| {
3211                parent.child(
3212                    h_flex()
3213                        .w_full()
3214                        .child(
3215                            Icon::new(IconName::File)
3216                                .size(IconSize::XSmall)
3217                                .color(Color::Disabled),
3218                        )
3219                        .child(
3220                            Label::new(rules_file_text)
3221                                .size(LabelSize::XSmall)
3222                                .color(Color::Muted)
3223                                .buffer_font(cx)
3224                                .ml_1p5()
3225                                .mr_0p5(),
3226                        )
3227                        .child(
3228                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3229                                .shape(ui::IconButtonShape::Square)
3230                                .icon_size(IconSize::XSmall)
3231                                .icon_color(Color::Ignored)
3232                                .on_click(cx.listener(Self::handle_open_rules))
3233                                .tooltip(Tooltip::text("View Rules")),
3234                        ),
3235                )
3236            })
3237            .into_any()
3238    }
3239
3240    fn handle_allow_tool(
3241        &mut self,
3242        tool_use_id: LanguageModelToolUseId,
3243        _: &ClickEvent,
3244        window: &mut Window,
3245        cx: &mut Context<Self>,
3246    ) {
3247        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3248            .thread
3249            .read(cx)
3250            .pending_tool(&tool_use_id)
3251            .map(|tool_use| tool_use.status.clone())
3252        {
3253            self.thread.update(cx, |thread, cx| {
3254                if let Some(configured) = thread.get_or_init_configured_model(cx) {
3255                    thread.run_tool(
3256                        c.tool_use_id.clone(),
3257                        c.ui_text.clone(),
3258                        c.input.clone(),
3259                        &c.messages,
3260                        c.tool.clone(),
3261                        configured.model,
3262                        Some(window.window_handle()),
3263                        cx,
3264                    );
3265                }
3266            });
3267        }
3268    }
3269
3270    fn handle_deny_tool(
3271        &mut self,
3272        tool_use_id: LanguageModelToolUseId,
3273        tool_name: Arc<str>,
3274        _: &ClickEvent,
3275        window: &mut Window,
3276        cx: &mut Context<Self>,
3277    ) {
3278        let window_handle = window.window_handle();
3279        self.thread.update(cx, |thread, cx| {
3280            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3281        });
3282    }
3283
3284    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3285        let project_context = self.thread.read(cx).project_context();
3286        let project_context = project_context.borrow();
3287        let Some(project_context) = project_context.as_ref() else {
3288            return;
3289        };
3290
3291        let project_entry_ids = project_context
3292            .worktrees
3293            .iter()
3294            .flat_map(|worktree| worktree.rules_file.as_ref())
3295            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3296            .collect::<Vec<_>>();
3297
3298        self.workspace
3299            .update(cx, move |workspace, cx| {
3300                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3301                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3302                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3303                let project = workspace.project().read(cx);
3304                let project_paths = project_entry_ids
3305                    .into_iter()
3306                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3307                    .collect::<Vec<_>>();
3308                for project_path in project_paths {
3309                    workspace
3310                        .open_path(project_path, None, true, window, cx)
3311                        .detach_and_log_err(cx);
3312                }
3313            })
3314            .ok();
3315    }
3316
3317    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3318        for window in self.notifications.drain(..) {
3319            window
3320                .update(cx, |_, window, _| {
3321                    window.remove_window();
3322                })
3323                .ok();
3324
3325            self.notification_subscriptions.remove(&window);
3326        }
3327    }
3328
3329    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3330        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3331            return None;
3332        }
3333
3334        Some(
3335            div()
3336                .occlude()
3337                .id("active-thread-scrollbar")
3338                .on_mouse_move(cx.listener(|_, _, _, cx| {
3339                    cx.notify();
3340                    cx.stop_propagation()
3341                }))
3342                .on_hover(|_, _, cx| {
3343                    cx.stop_propagation();
3344                })
3345                .on_any_mouse_down(|_, _, cx| {
3346                    cx.stop_propagation();
3347                })
3348                .on_mouse_up(
3349                    MouseButton::Left,
3350                    cx.listener(|_, _, _, cx| {
3351                        cx.stop_propagation();
3352                    }),
3353                )
3354                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3355                    cx.notify();
3356                }))
3357                .h_full()
3358                .absolute()
3359                .right_1()
3360                .top_1()
3361                .bottom_0()
3362                .w(px(12.))
3363                .cursor_default()
3364                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3365        )
3366    }
3367
3368    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3369        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3370        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3371            cx.background_executor()
3372                .timer(SCROLLBAR_SHOW_INTERVAL)
3373                .await;
3374            thread
3375                .update(cx, |thread, cx| {
3376                    if !thread.scrollbar_state.is_dragging() {
3377                        thread.show_scrollbar = false;
3378                        cx.notify();
3379                    }
3380                })
3381                .log_err();
3382        }))
3383    }
3384}
3385
3386pub enum ActiveThreadEvent {
3387    EditingMessageTokenCountChanged,
3388}
3389
3390impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3391
3392impl Render for ActiveThread {
3393    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3394        v_flex()
3395            .size_full()
3396            .relative()
3397            .on_mouse_move(cx.listener(|this, _, _, cx| {
3398                this.show_scrollbar = true;
3399                this.hide_scrollbar_later(cx);
3400                cx.notify();
3401            }))
3402            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3403                this.show_scrollbar = true;
3404                this.hide_scrollbar_later(cx);
3405                cx.notify();
3406            }))
3407            .on_mouse_up(
3408                MouseButton::Left,
3409                cx.listener(|this, _, _, cx| {
3410                    this.hide_scrollbar_later(cx);
3411                }),
3412            )
3413            .child(list(self.list_state.clone()).flex_grow())
3414            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3415                this.child(scrollbar)
3416            })
3417    }
3418}
3419
3420pub(crate) fn open_active_thread_as_markdown(
3421    thread: Entity<Thread>,
3422    workspace: Entity<Workspace>,
3423    window: &mut Window,
3424    cx: &mut App,
3425) -> Task<anyhow::Result<()>> {
3426    let markdown_language_task = workspace
3427        .read(cx)
3428        .app_state()
3429        .languages
3430        .language_for_name("Markdown");
3431
3432    window.spawn(cx, async move |cx| {
3433        let markdown_language = markdown_language_task.await?;
3434
3435        workspace.update_in(cx, |workspace, window, cx| {
3436            let thread = thread.read(cx);
3437            let markdown = thread.to_markdown(cx)?;
3438            let thread_summary = thread
3439                .summary()
3440                .map(|summary| summary.to_string())
3441                .unwrap_or_else(|| "Thread".to_string());
3442
3443            let project = workspace.project().clone();
3444
3445            if !project.read(cx).is_local() {
3446                anyhow::bail!("failed to open active thread as markdown in remote project");
3447            }
3448
3449            let buffer = project.update(cx, |project, cx| {
3450                project.create_local_buffer(&markdown, Some(markdown_language), cx)
3451            });
3452            let buffer =
3453                cx.new(|cx| MultiBuffer::singleton(buffer, cx).with_title(thread_summary.clone()));
3454
3455            workspace.add_item_to_active_pane(
3456                Box::new(cx.new(|cx| {
3457                    let mut editor =
3458                        Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
3459                    editor.set_breadcrumb_header(thread_summary);
3460                    editor
3461                })),
3462                None,
3463                true,
3464                window,
3465                cx,
3466            );
3467
3468            anyhow::Ok(())
3469        })??;
3470        anyhow::Ok(())
3471    })
3472}
3473
3474pub(crate) fn open_context(
3475    context: &AgentContextHandle,
3476    workspace: Entity<Workspace>,
3477    window: &mut Window,
3478    cx: &mut App,
3479) {
3480    match context {
3481        AgentContextHandle::File(file_context) => {
3482            if let Some(project_path) = file_context.project_path(cx) {
3483                workspace.update(cx, |workspace, cx| {
3484                    workspace
3485                        .open_path(project_path, None, true, window, cx)
3486                        .detach_and_log_err(cx);
3487                });
3488            }
3489        }
3490
3491        AgentContextHandle::Directory(directory_context) => {
3492            let entry_id = directory_context.entry_id;
3493            workspace.update(cx, |workspace, cx| {
3494                workspace.project().update(cx, |_project, cx| {
3495                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3496                })
3497            })
3498        }
3499
3500        AgentContextHandle::Symbol(symbol_context) => {
3501            let buffer = symbol_context.buffer.read(cx);
3502            if let Some(project_path) = buffer.project_path(cx) {
3503                let snapshot = buffer.snapshot();
3504                let target_position = symbol_context.range.start.to_point(&snapshot);
3505                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3506                    .detach();
3507            }
3508        }
3509
3510        AgentContextHandle::Selection(selection_context) => {
3511            let buffer = selection_context.buffer.read(cx);
3512            if let Some(project_path) = buffer.project_path(cx) {
3513                let snapshot = buffer.snapshot();
3514                let target_position = selection_context.range.start.to_point(&snapshot);
3515
3516                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3517                    .detach();
3518            }
3519        }
3520
3521        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3522            cx.open_url(&fetched_url_context.url);
3523        }
3524
3525        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3526            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3527                panel.update(cx, |panel, cx| {
3528                    panel.open_thread(thread_context.thread.clone(), window, cx);
3529                });
3530            }
3531        }),
3532
3533        AgentContextHandle::TextThread(text_thread_context) => {
3534            workspace.update(cx, |workspace, cx| {
3535                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3536                    panel.update(cx, |panel, cx| {
3537                        panel.open_prompt_editor(text_thread_context.context.clone(), window, cx)
3538                    });
3539                }
3540            })
3541        }
3542
3543        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3544            Box::new(OpenRulesLibrary {
3545                prompt_to_select: Some(rules_context.prompt_id.0),
3546            }),
3547            cx,
3548        ),
3549
3550        AgentContextHandle::Image(_) => {}
3551    }
3552}
3553
3554fn open_editor_at_position(
3555    project_path: project::ProjectPath,
3556    target_position: Point,
3557    workspace: &Entity<Workspace>,
3558    window: &mut Window,
3559    cx: &mut App,
3560) -> Task<()> {
3561    let open_task = workspace.update(cx, |workspace, cx| {
3562        workspace.open_path(project_path, None, true, window, cx)
3563    });
3564    window.spawn(cx, async move |cx| {
3565        if let Some(active_editor) = open_task
3566            .await
3567            .log_err()
3568            .and_then(|item| item.downcast::<Editor>())
3569        {
3570            active_editor
3571                .downgrade()
3572                .update_in(cx, |editor, window, cx| {
3573                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3574                })
3575                .log_err();
3576        }
3577    })
3578}