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