active_thread.rs

   1use crate::AgentPanel;
   2use crate::context::{AgentContextHandle, RULES_ICON};
   3use crate::context_picker::{ContextPicker, MentionLink};
   4use crate::context_store::ContextStore;
   5use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
   6use crate::thread::{
   7    LastRestoreCheckpoint, MessageId, MessageSegment, Thread, ThreadError, ThreadEvent,
   8    ThreadFeedback,
   9};
  10use crate::thread_store::{RulesLoadingError, TextThreadStore, ThreadStore};
  11use crate::tool_use::{PendingToolUseStatus, ToolUse};
  12use crate::ui::{
  13    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
  14};
  15use anyhow::Context as _;
  16use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
  17use assistant_tool::ToolUseStatus;
  18use collections::{HashMap, HashSet};
  19use editor::actions::{MoveUp, Paste};
  20use editor::scroll::Autoscroll;
  21use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer};
  22use gpui::{
  23    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardEntry,
  24    ClipboardItem, DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla,
  25    ListAlignment, ListState, MouseButton, PlatformDisplay, ScrollHandle, Stateful,
  26    StyleRefinement, Subscription, Task, TextStyle, TextStyleRefinement, Transformation,
  27    UnderlineStyle, WeakEntity, WindowHandle, linear_color_stop, linear_gradient, list, percentage,
  28    pulsating_between,
  29};
  30use language::{Buffer, Language, LanguageRegistry};
  31use language_model::{
  32    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, Role, StopReason,
  33};
  34use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  35use markdown::{HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
  36use project::{ProjectEntryId, ProjectItem as _};
  37use rope::Point;
  38use settings::{Settings as _, SettingsStore, update_settings_file};
  39use std::ffi::OsStr;
  40use std::path::Path;
  41use std::rc::Rc;
  42use std::sync::Arc;
  43use std::time::Duration;
  44use text::ToPoint;
  45use theme::ThemeSettings;
  46use ui::{
  47    Disclosure, IconButton, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize,
  48    Tooltip, prelude::*,
  49};
  50use util::ResultExt as _;
  51use util::markdown::MarkdownCodeBlock;
  52use workspace::Workspace;
  53use zed_actions::assistant::OpenRulesLibrary;
  54
  55pub struct ActiveThread {
  56    context_store: Entity<ContextStore>,
  57    language_registry: Arc<LanguageRegistry>,
  58    thread_store: Entity<ThreadStore>,
  59    text_thread_store: Entity<TextThreadStore>,
  60    thread: Entity<Thread>,
  61    workspace: WeakEntity<Workspace>,
  62    save_thread_task: Option<Task<()>>,
  63    messages: Vec<MessageId>,
  64    list_state: ListState,
  65    scrollbar_state: ScrollbarState,
  66    show_scrollbar: bool,
  67    hide_scrollbar_task: Option<Task<()>>,
  68    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  69    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  70    editing_message: Option<(MessageId, EditingMessageState)>,
  71    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  72    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  73    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  74    last_error: Option<ThreadError>,
  75    notifications: Vec<WindowHandle<AgentNotification>>,
  76    copied_code_block_ids: HashSet<(MessageId, usize)>,
  77    _subscriptions: Vec<Subscription>,
  78    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  79    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  80    _load_edited_message_context_task: Option<Task<()>>,
  81}
  82
  83struct RenderedMessage {
  84    language_registry: Arc<LanguageRegistry>,
  85    segments: Vec<RenderedMessageSegment>,
  86}
  87
  88#[derive(Clone)]
  89struct RenderedToolUse {
  90    label: Entity<Markdown>,
  91    input: Entity<Markdown>,
  92    output: Entity<Markdown>,
  93}
  94
  95impl RenderedMessage {
  96    fn from_segments(
  97        segments: &[MessageSegment],
  98        language_registry: Arc<LanguageRegistry>,
  99        cx: &mut App,
 100    ) -> Self {
 101        let mut this = Self {
 102            language_registry,
 103            segments: Vec::with_capacity(segments.len()),
 104        };
 105        for segment in segments {
 106            this.push_segment(segment, cx);
 107        }
 108        this
 109    }
 110
 111    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 112        if let Some(RenderedMessageSegment::Thinking {
 113            content,
 114            scroll_handle,
 115        }) = self.segments.last_mut()
 116        {
 117            content.update(cx, |markdown, cx| {
 118                markdown.append(text, cx);
 119            });
 120            scroll_handle.scroll_to_bottom();
 121        } else {
 122            self.segments.push(RenderedMessageSegment::Thinking {
 123                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 124                scroll_handle: ScrollHandle::default(),
 125            });
 126        }
 127    }
 128
 129    fn append_text(&mut self, text: &String, cx: &mut App) {
 130        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 131            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 132        } else {
 133            self.segments
 134                .push(RenderedMessageSegment::Text(parse_markdown(
 135                    SharedString::from(text),
 136                    self.language_registry.clone(),
 137                    cx,
 138                )));
 139        }
 140    }
 141
 142    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 143        match segment {
 144            MessageSegment::Thinking { text, .. } => {
 145                self.segments.push(RenderedMessageSegment::Thinking {
 146                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 147                    scroll_handle: ScrollHandle::default(),
 148                })
 149            }
 150            MessageSegment::Text(text) => {
 151                self.segments
 152                    .push(RenderedMessageSegment::Text(parse_markdown(
 153                        text.into(),
 154                        self.language_registry.clone(),
 155                        cx,
 156                    )))
 157            }
 158            MessageSegment::RedactedThinking(_) => {}
 159        };
 160    }
 161}
 162
 163enum RenderedMessageSegment {
 164    Thinking {
 165        content: Entity<Markdown>,
 166        scroll_handle: ScrollHandle,
 167    },
 168    Text(Entity<Markdown>),
 169}
 170
 171fn parse_markdown(
 172    text: SharedString,
 173    language_registry: Arc<LanguageRegistry>,
 174    cx: &mut App,
 175) -> Entity<Markdown> {
 176    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 177}
 178
 179pub(crate) fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 180    let theme_settings = ThemeSettings::get_global(cx);
 181    let colors = cx.theme().colors();
 182    let ui_font_size = TextSize::Default.rems(cx);
 183    let buffer_font_size = TextSize::Small.rems(cx);
 184    let mut text_style = window.text_style();
 185
 186    text_style.refine(&TextStyleRefinement {
 187        font_family: Some(theme_settings.ui_font.family.clone()),
 188        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 189        font_features: Some(theme_settings.ui_font.features.clone()),
 190        font_size: Some(ui_font_size.into()),
 191        color: Some(cx.theme().colors().text),
 192        ..Default::default()
 193    });
 194
 195    MarkdownStyle {
 196        base_text_style: text_style.clone(),
 197        syntax: cx.theme().syntax().clone(),
 198        selection_background_color: cx.theme().players().local().selection,
 199        code_block_overflow_x_scroll: true,
 200        table_overflow_x_scroll: true,
 201        heading_level_styles: Some(HeadingLevelStyles {
 202            h1: Some(TextStyleRefinement {
 203                font_size: Some(rems(1.15).into()),
 204                ..Default::default()
 205            }),
 206            h2: Some(TextStyleRefinement {
 207                font_size: Some(rems(1.1).into()),
 208                ..Default::default()
 209            }),
 210            h3: Some(TextStyleRefinement {
 211                font_size: Some(rems(1.05).into()),
 212                ..Default::default()
 213            }),
 214            h4: Some(TextStyleRefinement {
 215                font_size: Some(rems(1.).into()),
 216                ..Default::default()
 217            }),
 218            h5: Some(TextStyleRefinement {
 219                font_size: Some(rems(0.95).into()),
 220                ..Default::default()
 221            }),
 222            h6: Some(TextStyleRefinement {
 223                font_size: Some(rems(0.875).into()),
 224                ..Default::default()
 225            }),
 226        }),
 227        code_block: StyleRefinement {
 228            padding: EdgesRefinement {
 229                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 230                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 231                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 232                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 233            },
 234            background: Some(colors.editor_background.into()),
 235            text: Some(TextStyleRefinement {
 236                font_family: Some(theme_settings.buffer_font.family.clone()),
 237                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 238                font_features: Some(theme_settings.buffer_font.features.clone()),
 239                font_size: Some(buffer_font_size.into()),
 240                ..Default::default()
 241            }),
 242            ..Default::default()
 243        },
 244        inline_code: TextStyleRefinement {
 245            font_family: Some(theme_settings.buffer_font.family.clone()),
 246            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 247            font_features: Some(theme_settings.buffer_font.features.clone()),
 248            font_size: Some(buffer_font_size.into()),
 249            background_color: Some(colors.editor_foreground.opacity(0.08)),
 250            ..Default::default()
 251        },
 252        link: TextStyleRefinement {
 253            background_color: Some(colors.editor_foreground.opacity(0.025)),
 254            underline: Some(UnderlineStyle {
 255                color: Some(colors.text_accent.opacity(0.5)),
 256                thickness: px(1.),
 257                ..Default::default()
 258            }),
 259            ..Default::default()
 260        },
 261        link_callback: Some(Rc::new(move |url, cx| {
 262            if MentionLink::is_valid(url) {
 263                let colors = cx.theme().colors();
 264                Some(TextStyleRefinement {
 265                    background_color: Some(colors.element_background),
 266                    ..Default::default()
 267                })
 268            } else {
 269                None
 270            }
 271        })),
 272        ..Default::default()
 273    }
 274}
 275
 276fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 277    let theme_settings = ThemeSettings::get_global(cx);
 278    let colors = cx.theme().colors();
 279    let ui_font_size = TextSize::Default.rems(cx);
 280    let buffer_font_size = TextSize::Small.rems(cx);
 281    let mut text_style = window.text_style();
 282
 283    text_style.refine(&TextStyleRefinement {
 284        font_family: Some(theme_settings.ui_font.family.clone()),
 285        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 286        font_features: Some(theme_settings.ui_font.features.clone()),
 287        font_size: Some(ui_font_size.into()),
 288        color: Some(cx.theme().colors().text),
 289        ..Default::default()
 290    });
 291
 292    MarkdownStyle {
 293        base_text_style: text_style,
 294        syntax: cx.theme().syntax().clone(),
 295        selection_background_color: cx.theme().players().local().selection,
 296        code_block_overflow_x_scroll: true,
 297        code_block: StyleRefinement {
 298            margin: EdgesRefinement::default(),
 299            padding: EdgesRefinement::default(),
 300            background: Some(colors.editor_background.into()),
 301            border_color: None,
 302            border_widths: EdgesRefinement::default(),
 303            text: Some(TextStyleRefinement {
 304                font_family: Some(theme_settings.buffer_font.family.clone()),
 305                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 306                font_features: Some(theme_settings.buffer_font.features.clone()),
 307                font_size: Some(buffer_font_size.into()),
 308                ..Default::default()
 309            }),
 310            ..Default::default()
 311        },
 312        inline_code: TextStyleRefinement {
 313            font_family: Some(theme_settings.buffer_font.family.clone()),
 314            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 315            font_features: Some(theme_settings.buffer_font.features.clone()),
 316            font_size: Some(TextSize::XSmall.rems(cx).into()),
 317            ..Default::default()
 318        },
 319        heading: StyleRefinement {
 320            text: Some(TextStyleRefinement {
 321                font_size: Some(ui_font_size.into()),
 322                ..Default::default()
 323            }),
 324            ..Default::default()
 325        },
 326        ..Default::default()
 327    }
 328}
 329
 330const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 10;
 331
 332fn render_markdown_code_block(
 333    message_id: MessageId,
 334    ix: usize,
 335    kind: &CodeBlockKind,
 336    parsed_markdown: &ParsedMarkdown,
 337    metadata: CodeBlockMetadata,
 338    active_thread: Entity<ActiveThread>,
 339    workspace: WeakEntity<Workspace>,
 340    _window: &Window,
 341    cx: &App,
 342) -> Div {
 343    let label = match kind {
 344        CodeBlockKind::Indented => None,
 345        CodeBlockKind::Fenced => Some(
 346            h_flex()
 347                .gap_1()
 348                .child(
 349                    Icon::new(IconName::Code)
 350                        .color(Color::Muted)
 351                        .size(IconSize::XSmall),
 352                )
 353                .child(Label::new("untitled").size(LabelSize::Small))
 354                .into_any_element(),
 355        ),
 356        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 357            parsed_markdown.languages_by_name.get(raw_language_name),
 358            raw_language_name.clone(),
 359            cx,
 360        )),
 361        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 362            // We tell the model to use /dev/null for the path instead of using ```language
 363            // because otherwise it consistently fails to use code citations.
 364            if path_range.path.starts_with("/dev/null") {
 365                let ext = path_range
 366                    .path
 367                    .extension()
 368                    .and_then(OsStr::to_str)
 369                    .map(|str| SharedString::new(str.to_string()))
 370                    .unwrap_or_default();
 371
 372                render_code_language(
 373                    parsed_markdown
 374                        .languages_by_path
 375                        .get(&path_range.path)
 376                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 377                    ext,
 378                    cx,
 379                )
 380            } else {
 381                let content = if let Some(parent) = path_range.path.parent() {
 382                    h_flex()
 383                        .ml_1()
 384                        .gap_1()
 385                        .child(
 386                            Label::new(file_name.to_string_lossy().to_string())
 387                                .size(LabelSize::Small),
 388                        )
 389                        .child(
 390                            Label::new(parent.to_string_lossy().to_string())
 391                                .color(Color::Muted)
 392                                .size(LabelSize::Small),
 393                        )
 394                        .into_any_element()
 395                } else {
 396                    Label::new(path_range.path.to_string_lossy().to_string())
 397                        .size(LabelSize::Small)
 398                        .ml_1()
 399                        .into_any_element()
 400                };
 401
 402                h_flex()
 403                    .id(("code-block-header-label", ix))
 404                    .w_full()
 405                    .max_w_full()
 406                    .px_1()
 407                    .gap_0p5()
 408                    .cursor_pointer()
 409                    .rounded_sm()
 410                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 411                    .tooltip(Tooltip::text("Jump to File"))
 412                    .child(
 413                        h_flex()
 414                            .gap_0p5()
 415                            .children(
 416                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 417                                    .map(Icon::from_path)
 418                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 419                            )
 420                            .child(content)
 421                            .child(
 422                                Icon::new(IconName::ArrowUpRight)
 423                                    .size(IconSize::XSmall)
 424                                    .color(Color::Ignored),
 425                            ),
 426                    )
 427                    .on_click({
 428                        let path_range = path_range.clone();
 429                        move |_, window, cx| {
 430                            workspace
 431                                .update(cx, {
 432                                    |workspace, cx| {
 433                                        let Some(project_path) = workspace
 434                                            .project()
 435                                            .read(cx)
 436                                            .find_project_path(&path_range.path, cx)
 437                                        else {
 438                                            return;
 439                                        };
 440                                        let Some(target) = path_range.range.as_ref().map(|range| {
 441                                            Point::new(
 442                                                // Line number is 1-based
 443                                                range.start.line.saturating_sub(1),
 444                                                range.start.col.unwrap_or(0),
 445                                            )
 446                                        }) else {
 447                                            return;
 448                                        };
 449                                        let open_task = workspace.open_path(
 450                                            project_path,
 451                                            None,
 452                                            true,
 453                                            window,
 454                                            cx,
 455                                        );
 456                                        window
 457                                            .spawn(cx, async move |cx| {
 458                                                let item = open_task.await?;
 459                                                if let Some(active_editor) =
 460                                                    item.downcast::<Editor>()
 461                                                {
 462                                                    active_editor
 463                                                        .update_in(cx, |editor, window, cx| {
 464                                                            editor.go_to_singleton_buffer_point(
 465                                                                target, window, cx,
 466                                                            );
 467                                                        })
 468                                                        .ok();
 469                                                }
 470                                                anyhow::Ok(())
 471                                            })
 472                                            .detach_and_log_err(cx);
 473                                    }
 474                                })
 475                                .ok();
 476                        }
 477                    })
 478                    .into_any_element()
 479            }
 480        }),
 481    };
 482
 483    let codeblock_was_copied = active_thread
 484        .read(cx)
 485        .copied_code_block_ids
 486        .contains(&(message_id, ix));
 487
 488    let is_expanded = active_thread
 489        .read(cx)
 490        .expanded_code_blocks
 491        .get(&(message_id, ix))
 492        .copied()
 493        .unwrap_or(true);
 494
 495    let codeblock_header_bg = cx
 496        .theme()
 497        .colors()
 498        .element_background
 499        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 500
 501    let codeblock_header = h_flex()
 502        .py_1()
 503        .pl_1p5()
 504        .pr_1()
 505        .gap_1()
 506        .justify_between()
 507        .border_b_1()
 508        .border_color(cx.theme().colors().border.opacity(0.6))
 509        .bg(codeblock_header_bg)
 510        .rounded_t_md()
 511        .children(label)
 512        .child(
 513            h_flex()
 514                .visible_on_hover("codeblock_container")
 515                .gap_1()
 516                .child(
 517                    IconButton::new(
 518                        ("copy-markdown-code", ix),
 519                        if codeblock_was_copied {
 520                            IconName::Check
 521                        } else {
 522                            IconName::Copy
 523                        },
 524                    )
 525                    .icon_color(Color::Muted)
 526                    .shape(ui::IconButtonShape::Square)
 527                    .tooltip(Tooltip::text("Copy Code"))
 528                    .on_click({
 529                        let active_thread = active_thread.clone();
 530                        let parsed_markdown = parsed_markdown.clone();
 531                        let code_block_range = metadata.content_range.clone();
 532                        move |_event, _window, cx| {
 533                            active_thread.update(cx, |this, cx| {
 534                                this.copied_code_block_ids.insert((message_id, ix));
 535
 536                                let code =
 537                                    parsed_markdown.source()[code_block_range.clone()].to_string();
 538                                cx.write_to_clipboard(ClipboardItem::new_string(code));
 539
 540                                cx.spawn(async move |this, cx| {
 541                                    cx.background_executor().timer(Duration::from_secs(2)).await;
 542
 543                                    cx.update(|cx| {
 544                                        this.update(cx, |this, cx| {
 545                                            this.copied_code_block_ids.remove(&(message_id, ix));
 546                                            cx.notify();
 547                                        })
 548                                    })
 549                                    .ok();
 550                                })
 551                                .detach();
 552                            });
 553                        }
 554                    }),
 555                )
 556                .when(
 557                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 558                    |header| {
 559                        header.child(
 560                            IconButton::new(
 561                                ("expand-collapse-code", ix),
 562                                if is_expanded {
 563                                    IconName::ChevronUp
 564                                } else {
 565                                    IconName::ChevronDown
 566                                },
 567                            )
 568                            .icon_color(Color::Muted)
 569                            .shape(ui::IconButtonShape::Square)
 570                            .tooltip(Tooltip::text(if is_expanded {
 571                                "Collapse Code"
 572                            } else {
 573                                "Expand Code"
 574                            }))
 575                            .on_click({
 576                                let active_thread = active_thread.clone();
 577                                move |_event, _window, cx| {
 578                                    active_thread.update(cx, |this, cx| {
 579                                        let is_expanded = this
 580                                            .expanded_code_blocks
 581                                            .entry((message_id, ix))
 582                                            .or_insert(true);
 583                                        *is_expanded = !*is_expanded;
 584                                        cx.notify();
 585                                    });
 586                                }
 587                            }),
 588                        )
 589                    },
 590                ),
 591        );
 592
 593    v_flex()
 594        .group("codeblock_container")
 595        .my_2()
 596        .overflow_hidden()
 597        .rounded_lg()
 598        .border_1()
 599        .border_color(cx.theme().colors().border.opacity(0.6))
 600        .bg(cx.theme().colors().editor_background)
 601        .child(codeblock_header)
 602        .when(
 603            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 604            |this| {
 605                if is_expanded {
 606                    this.h_full()
 607                } else {
 608                    this.max_h_80()
 609                }
 610            },
 611        )
 612}
 613
 614fn render_code_language(
 615    language: Option<&Arc<Language>>,
 616    name_fallback: SharedString,
 617    cx: &App,
 618) -> AnyElement {
 619    let icon_path = language.and_then(|language| {
 620        language
 621            .config()
 622            .matcher
 623            .path_suffixes
 624            .iter()
 625            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 626            .map(Icon::from_path)
 627    });
 628
 629    let language_label = language
 630        .map(|language| language.name().into())
 631        .unwrap_or(name_fallback);
 632
 633    h_flex()
 634        .gap_1()
 635        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::Small)))
 636        .child(Label::new(language_label).size(LabelSize::Small))
 637        .into_any_element()
 638}
 639
 640fn open_markdown_link(
 641    text: SharedString,
 642    workspace: WeakEntity<Workspace>,
 643    window: &mut Window,
 644    cx: &mut App,
 645) {
 646    let Some(workspace) = workspace.upgrade() else {
 647        cx.open_url(&text);
 648        return;
 649    };
 650
 651    match MentionLink::try_parse(&text, &workspace, cx) {
 652        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 653            if entry.is_dir() {
 654                workspace.project().update(cx, |_, cx| {
 655                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 656                })
 657            } else {
 658                workspace
 659                    .open_path(path, None, true, window, cx)
 660                    .detach_and_log_err(cx);
 661            }
 662        }),
 663        Some(MentionLink::Symbol(path, symbol_name)) => {
 664            let open_task = workspace.update(cx, |workspace, cx| {
 665                workspace.open_path(path, None, true, window, cx)
 666            });
 667            window
 668                .spawn(cx, async move |cx| {
 669                    let active_editor = open_task
 670                        .await?
 671                        .downcast::<Editor>()
 672                        .context("Item is not an editor")?;
 673                    active_editor.update_in(cx, |editor, window, cx| {
 674                        let symbol_range = editor
 675                            .buffer()
 676                            .read(cx)
 677                            .snapshot(cx)
 678                            .outline(None)
 679                            .and_then(|outline| {
 680                                outline
 681                                    .find_most_similar(&symbol_name)
 682                                    .map(|(_, item)| item.range.clone())
 683                            })
 684                            .context("Could not find matching symbol")?;
 685
 686                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 687                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 688                        });
 689                        anyhow::Ok(())
 690                    })
 691                })
 692                .detach_and_log_err(cx);
 693        }
 694        Some(MentionLink::Selection(path, line_range)) => {
 695            let open_task = workspace.update(cx, |workspace, cx| {
 696                workspace.open_path(path, None, true, window, cx)
 697            });
 698            window
 699                .spawn(cx, async move |cx| {
 700                    let active_editor = open_task
 701                        .await?
 702                        .downcast::<Editor>()
 703                        .context("Item is not an editor")?;
 704                    active_editor.update_in(cx, |editor, window, cx| {
 705                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 706                            s.select_ranges([Point::new(line_range.start as u32, 0)
 707                                ..Point::new(line_range.start as u32, 0)])
 708                        });
 709                        anyhow::Ok(())
 710                    })
 711                })
 712                .detach_and_log_err(cx);
 713        }
 714        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 715            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 716                panel.update(cx, |panel, cx| {
 717                    panel
 718                        .open_thread_by_id(&thread_id, window, cx)
 719                        .detach_and_log_err(cx)
 720                });
 721            }
 722        }),
 723        Some(MentionLink::TextThread(path)) => workspace.update(cx, |workspace, cx| {
 724            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 725                panel.update(cx, |panel, cx| {
 726                    panel
 727                        .open_saved_prompt_editor(path, window, cx)
 728                        .detach_and_log_err(cx);
 729                });
 730            }
 731        }),
 732        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 733        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
 734            Box::new(OpenRulesLibrary {
 735                prompt_to_select: Some(prompt_id.0),
 736            }),
 737            cx,
 738        ),
 739        None => cx.open_url(&text),
 740    }
 741}
 742
 743struct EditingMessageState {
 744    editor: Entity<Editor>,
 745    context_strip: Entity<ContextStrip>,
 746    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 747    last_estimated_token_count: Option<usize>,
 748    _subscriptions: [Subscription; 2],
 749    _update_token_count_task: Option<Task<()>>,
 750}
 751
 752impl ActiveThread {
 753    pub fn new(
 754        thread: Entity<Thread>,
 755        thread_store: Entity<ThreadStore>,
 756        text_thread_store: Entity<TextThreadStore>,
 757        context_store: Entity<ContextStore>,
 758        language_registry: Arc<LanguageRegistry>,
 759        workspace: WeakEntity<Workspace>,
 760        window: &mut Window,
 761        cx: &mut Context<Self>,
 762    ) -> Self {
 763        let subscriptions = vec![
 764            cx.observe(&thread, |_, _, cx| cx.notify()),
 765            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 766            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 767            cx.observe_global::<SettingsStore>(|_, cx| cx.notify()),
 768        ];
 769
 770        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 771            let this = cx.entity().downgrade();
 772            move |ix, window: &mut Window, cx: &mut App| {
 773                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 774                    .unwrap()
 775            }
 776        });
 777        let mut this = Self {
 778            language_registry,
 779            thread_store,
 780            text_thread_store,
 781            context_store,
 782            thread: thread.clone(),
 783            workspace,
 784            save_thread_task: None,
 785            messages: Vec::new(),
 786            rendered_messages_by_id: HashMap::default(),
 787            rendered_tool_uses: HashMap::default(),
 788            expanded_tool_uses: HashMap::default(),
 789            expanded_thinking_segments: HashMap::default(),
 790            expanded_code_blocks: HashMap::default(),
 791            list_state: list_state.clone(),
 792            scrollbar_state: ScrollbarState::new(list_state),
 793            show_scrollbar: false,
 794            hide_scrollbar_task: None,
 795            editing_message: None,
 796            last_error: None,
 797            copied_code_block_ids: HashSet::default(),
 798            notifications: Vec::new(),
 799            _subscriptions: subscriptions,
 800            notification_subscriptions: HashMap::default(),
 801            open_feedback_editors: HashMap::default(),
 802            _load_edited_message_context_task: None,
 803        };
 804
 805        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 806            this.push_message(&message.id, &message.segments, window, cx);
 807
 808            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 809                this.render_tool_use_markdown(
 810                    tool_use.id.clone(),
 811                    tool_use.ui_text.clone(),
 812                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 813                    tool_use.status.text(),
 814                    cx,
 815                );
 816            }
 817        }
 818
 819        this
 820    }
 821
 822    pub fn thread(&self) -> &Entity<Thread> {
 823        &self.thread
 824    }
 825
 826    pub fn is_empty(&self) -> bool {
 827        self.messages.is_empty()
 828    }
 829
 830    pub fn summary(&self, cx: &App) -> Option<SharedString> {
 831        self.thread.read(cx).summary()
 832    }
 833
 834    pub fn summary_or_default(&self, cx: &App) -> SharedString {
 835        self.thread.read(cx).summary_or_default()
 836    }
 837
 838    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 839        self.last_error.take();
 840        self.thread.update(cx, |thread, cx| {
 841            thread.cancel_last_completion(Some(window.window_handle()), cx)
 842        })
 843    }
 844
 845    pub fn last_error(&self) -> Option<ThreadError> {
 846        self.last_error.clone()
 847    }
 848
 849    pub fn clear_last_error(&mut self) {
 850        self.last_error.take();
 851    }
 852
 853    /// Returns the editing message id and the estimated token count in the content
 854    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
 855        self.editing_message
 856            .as_ref()
 857            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 858    }
 859
 860    pub fn context_store(&self) -> &Entity<ContextStore> {
 861        &self.context_store
 862    }
 863
 864    pub fn thread_store(&self) -> &Entity<ThreadStore> {
 865        &self.thread_store
 866    }
 867
 868    pub fn text_thread_store(&self) -> &Entity<TextThreadStore> {
 869        &self.text_thread_store
 870    }
 871
 872    fn push_message(
 873        &mut self,
 874        id: &MessageId,
 875        segments: &[MessageSegment],
 876        _window: &mut Window,
 877        cx: &mut Context<Self>,
 878    ) {
 879        let old_len = self.messages.len();
 880        self.messages.push(*id);
 881        self.list_state.splice(old_len..old_len, 1);
 882
 883        let rendered_message =
 884            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 885        self.rendered_messages_by_id.insert(*id, rendered_message);
 886    }
 887
 888    fn edited_message(
 889        &mut self,
 890        id: &MessageId,
 891        segments: &[MessageSegment],
 892        _window: &mut Window,
 893        cx: &mut Context<Self>,
 894    ) {
 895        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 896            return;
 897        };
 898        self.list_state.splice(index..index + 1, 1);
 899        let rendered_message =
 900            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 901        self.rendered_messages_by_id.insert(*id, rendered_message);
 902    }
 903
 904    fn deleted_message(&mut self, id: &MessageId) {
 905        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 906            return;
 907        };
 908        self.messages.remove(index);
 909        self.list_state.splice(index..index + 1, 0);
 910        self.rendered_messages_by_id.remove(id);
 911    }
 912
 913    fn render_tool_use_markdown(
 914        &mut self,
 915        tool_use_id: LanguageModelToolUseId,
 916        tool_label: impl Into<SharedString>,
 917        tool_input: &str,
 918        tool_output: SharedString,
 919        cx: &mut Context<Self>,
 920    ) {
 921        let rendered = self
 922            .rendered_tool_uses
 923            .entry(tool_use_id.clone())
 924            .or_insert_with(|| RenderedToolUse {
 925                label: cx.new(|cx| {
 926                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 927                }),
 928                input: cx.new(|cx| {
 929                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 930                }),
 931                output: cx.new(|cx| {
 932                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 933                }),
 934            });
 935
 936        rendered.label.update(cx, |this, cx| {
 937            this.replace(tool_label, cx);
 938        });
 939        rendered.input.update(cx, |this, cx| {
 940            this.replace(
 941                MarkdownCodeBlock {
 942                    tag: "json",
 943                    text: tool_input,
 944                }
 945                .to_string(),
 946                cx,
 947            );
 948        });
 949        rendered.output.update(cx, |this, cx| {
 950            this.replace(tool_output, cx);
 951        });
 952    }
 953
 954    fn handle_thread_event(
 955        &mut self,
 956        _thread: &Entity<Thread>,
 957        event: &ThreadEvent,
 958        window: &mut Window,
 959        cx: &mut Context<Self>,
 960    ) {
 961        match event {
 962            ThreadEvent::CancelEditing => {
 963                if self.editing_message.is_some() {
 964                    self.cancel_editing_message(&menu::Cancel, window, cx);
 965                }
 966            }
 967            ThreadEvent::ShowError(error) => {
 968                self.last_error = Some(error.clone());
 969            }
 970            ThreadEvent::NewRequest | ThreadEvent::CompletionCanceled => {
 971                cx.notify();
 972            }
 973            ThreadEvent::StreamedCompletion
 974            | ThreadEvent::SummaryGenerated
 975            | ThreadEvent::SummaryChanged => {
 976                self.save_thread(cx);
 977            }
 978            ThreadEvent::Stopped(reason) => match reason {
 979                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 980                    let thread = self.thread.read(cx);
 981                    self.show_notification(
 982                        if thread.used_tools_since_last_user_message() {
 983                            "Finished running tools"
 984                        } else {
 985                            "New message"
 986                        },
 987                        IconName::ZedAssistant,
 988                        window,
 989                        cx,
 990                    );
 991                }
 992                _ => {}
 993            },
 994            ThreadEvent::ToolConfirmationNeeded => {
 995                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 996            }
 997            ThreadEvent::StreamedAssistantText(message_id, text) => {
 998                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 999                    rendered_message.append_text(text, cx);
1000                }
1001            }
1002            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
1003                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
1004                    rendered_message.append_thinking(text, cx);
1005                }
1006            }
1007            ThreadEvent::MessageAdded(message_id) => {
1008                if let Some(message_segments) = self
1009                    .thread
1010                    .read(cx)
1011                    .message(*message_id)
1012                    .map(|message| message.segments.clone())
1013                {
1014                    self.push_message(message_id, &message_segments, window, cx);
1015                }
1016
1017                self.save_thread(cx);
1018                cx.notify();
1019            }
1020            ThreadEvent::MessageEdited(message_id) => {
1021                if let Some(message_segments) = self
1022                    .thread
1023                    .read(cx)
1024                    .message(*message_id)
1025                    .map(|message| message.segments.clone())
1026                {
1027                    self.edited_message(message_id, &message_segments, window, cx);
1028                }
1029
1030                self.save_thread(cx);
1031                cx.notify();
1032            }
1033            ThreadEvent::MessageDeleted(message_id) => {
1034                self.deleted_message(message_id);
1035                self.save_thread(cx);
1036                cx.notify();
1037            }
1038            ThreadEvent::UsePendingTools { tool_uses } => {
1039                for tool_use in tool_uses {
1040                    self.render_tool_use_markdown(
1041                        tool_use.id.clone(),
1042                        tool_use.ui_text.clone(),
1043                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1044                        "".into(),
1045                        cx,
1046                    );
1047                }
1048            }
1049            ThreadEvent::StreamedToolUse {
1050                tool_use_id,
1051                ui_text,
1052                input,
1053            } => {
1054                self.render_tool_use_markdown(
1055                    tool_use_id.clone(),
1056                    ui_text.clone(),
1057                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1058                    "".into(),
1059                    cx,
1060                );
1061            }
1062            ThreadEvent::ToolFinished {
1063                pending_tool_use, ..
1064            } => {
1065                if let Some(tool_use) = pending_tool_use {
1066                    self.render_tool_use_markdown(
1067                        tool_use.id.clone(),
1068                        tool_use.ui_text.clone(),
1069                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1070                        self.thread
1071                            .read(cx)
1072                            .output_for_tool(&tool_use.id)
1073                            .map(|output| output.clone().into())
1074                            .unwrap_or("".into()),
1075                        cx,
1076                    );
1077                }
1078            }
1079            ThreadEvent::CheckpointChanged => cx.notify(),
1080            ThreadEvent::ReceivedTextChunk => {}
1081            ThreadEvent::InvalidToolInput {
1082                tool_use_id,
1083                ui_text,
1084                invalid_input_json,
1085            } => {
1086                self.render_tool_use_markdown(
1087                    tool_use_id.clone(),
1088                    ui_text,
1089                    invalid_input_json,
1090                    self.thread
1091                        .read(cx)
1092                        .output_for_tool(tool_use_id)
1093                        .map(|output| output.clone().into())
1094                        .unwrap_or("".into()),
1095                    cx,
1096                );
1097            }
1098            ThreadEvent::MissingToolUse {
1099                tool_use_id,
1100                ui_text,
1101            } => {
1102                self.render_tool_use_markdown(
1103                    tool_use_id.clone(),
1104                    ui_text,
1105                    "",
1106                    self.thread
1107                        .read(cx)
1108                        .output_for_tool(tool_use_id)
1109                        .map(|output| output.clone().into())
1110                        .unwrap_or("".into()),
1111                    cx,
1112                );
1113            }
1114        }
1115    }
1116
1117    fn handle_rules_loading_error(
1118        &mut self,
1119        _thread_store: Entity<ThreadStore>,
1120        error: &RulesLoadingError,
1121        cx: &mut Context<Self>,
1122    ) {
1123        self.last_error = Some(ThreadError::Message {
1124            header: "Error loading rules file".into(),
1125            message: error.message.clone(),
1126        });
1127        cx.notify();
1128    }
1129
1130    fn show_notification(
1131        &mut self,
1132        caption: impl Into<SharedString>,
1133        icon: IconName,
1134        window: &mut Window,
1135        cx: &mut Context<ActiveThread>,
1136    ) {
1137        if window.is_window_active() || !self.notifications.is_empty() {
1138            return;
1139        }
1140
1141        let title = self
1142            .thread
1143            .read(cx)
1144            .summary()
1145            .unwrap_or("Agent Panel".into());
1146
1147        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1148            NotifyWhenAgentWaiting::PrimaryScreen => {
1149                if let Some(primary) = cx.primary_display() {
1150                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1151                }
1152            }
1153            NotifyWhenAgentWaiting::AllScreens => {
1154                let caption = caption.into();
1155                for screen in cx.displays() {
1156                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1157                }
1158            }
1159            NotifyWhenAgentWaiting::Never => {
1160                // Don't show anything
1161            }
1162        }
1163    }
1164
1165    fn pop_up(
1166        &mut self,
1167        icon: IconName,
1168        caption: SharedString,
1169        title: SharedString,
1170        window: &mut Window,
1171        screen: Rc<dyn PlatformDisplay>,
1172        cx: &mut Context<'_, ActiveThread>,
1173    ) {
1174        let options = AgentNotification::window_options(screen, cx);
1175
1176        let project_name = self.workspace.upgrade().and_then(|workspace| {
1177            workspace
1178                .read(cx)
1179                .project()
1180                .read(cx)
1181                .visible_worktrees(cx)
1182                .next()
1183                .map(|worktree| worktree.read(cx).root_name().to_string())
1184        });
1185
1186        if let Some(screen_window) = cx
1187            .open_window(options, |_, cx| {
1188                cx.new(|_| {
1189                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1190                })
1191            })
1192            .log_err()
1193        {
1194            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1195                self.notification_subscriptions
1196                    .entry(screen_window)
1197                    .or_insert_with(Vec::new)
1198                    .push(cx.subscribe_in(&pop_up, window, {
1199                        |this, _, event, window, cx| match event {
1200                            AgentNotificationEvent::Accepted => {
1201                                let handle = window.window_handle();
1202                                cx.activate(true);
1203
1204                                let workspace_handle = this.workspace.clone();
1205
1206                                // If there are multiple Zed windows, activate the correct one.
1207                                cx.defer(move |cx| {
1208                                    handle
1209                                        .update(cx, |_view, window, _cx| {
1210                                            window.activate_window();
1211
1212                                            if let Some(workspace) = workspace_handle.upgrade() {
1213                                                workspace.update(_cx, |workspace, cx| {
1214                                                    workspace.focus_panel::<AgentPanel>(window, cx);
1215                                                });
1216                                            }
1217                                        })
1218                                        .log_err();
1219                                });
1220
1221                                this.dismiss_notifications(cx);
1222                            }
1223                            AgentNotificationEvent::Dismissed => {
1224                                this.dismiss_notifications(cx);
1225                            }
1226                        }
1227                    }));
1228
1229                self.notifications.push(screen_window);
1230
1231                // If the user manually refocuses the original window, dismiss the popup.
1232                self.notification_subscriptions
1233                    .entry(screen_window)
1234                    .or_insert_with(Vec::new)
1235                    .push({
1236                        let pop_up_weak = pop_up.downgrade();
1237
1238                        cx.observe_window_activation(window, move |_, window, cx| {
1239                            if window.is_window_active() {
1240                                if let Some(pop_up) = pop_up_weak.upgrade() {
1241                                    pop_up.update(cx, |_, cx| {
1242                                        cx.emit(AgentNotificationEvent::Dismissed);
1243                                    });
1244                                }
1245                            }
1246                        })
1247                    });
1248            }
1249        }
1250    }
1251
1252    /// Spawns a task to save the active thread.
1253    ///
1254    /// Only one task to save the thread will be in flight at a time.
1255    fn save_thread(&mut self, cx: &mut Context<Self>) {
1256        let thread = self.thread.clone();
1257        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1258            let task = this
1259                .update(cx, |this, cx| {
1260                    this.thread_store
1261                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1262                })
1263                .ok();
1264
1265            if let Some(task) = task {
1266                task.await.log_err();
1267            }
1268        }));
1269    }
1270
1271    fn start_editing_message(
1272        &mut self,
1273        message_id: MessageId,
1274        message_segments: &[MessageSegment],
1275        window: &mut Window,
1276        cx: &mut Context<Self>,
1277    ) {
1278        // User message should always consist of a single text segment,
1279        // therefore we can skip returning early if it's not a text segment.
1280        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1281            return;
1282        };
1283
1284        // Cancel any ongoing streaming when user starts editing a previous message
1285        self.cancel_last_completion(window, cx);
1286
1287        let editor = crate::message_editor::create_editor(
1288            self.workspace.clone(),
1289            self.context_store.downgrade(),
1290            self.thread_store.downgrade(),
1291            self.text_thread_store.downgrade(),
1292            window,
1293            cx,
1294        );
1295        editor.update(cx, |editor, cx| {
1296            editor.set_text(message_text.clone(), window, cx);
1297            editor.focus_handle(cx).focus(window);
1298            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1299        });
1300        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1301            EditorEvent::BufferEdited => {
1302                this.update_editing_message_token_count(true, cx);
1303            }
1304            _ => {}
1305        });
1306
1307        let context_picker_menu_handle = PopoverMenuHandle::default();
1308        let context_strip = cx.new(|cx| {
1309            ContextStrip::new(
1310                self.context_store.clone(),
1311                self.workspace.clone(),
1312                Some(self.thread_store.downgrade()),
1313                Some(self.text_thread_store.downgrade()),
1314                context_picker_menu_handle.clone(),
1315                SuggestContextKind::File,
1316                window,
1317                cx,
1318            )
1319        });
1320
1321        let context_strip_subscription =
1322            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1323
1324        self.editing_message = Some((
1325            message_id,
1326            EditingMessageState {
1327                editor: editor.clone(),
1328                context_strip,
1329                context_picker_menu_handle,
1330                last_estimated_token_count: None,
1331                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1332                _update_token_count_task: None,
1333            },
1334        ));
1335        self.update_editing_message_token_count(false, cx);
1336        cx.notify();
1337    }
1338
1339    fn handle_context_strip_event(
1340        &mut self,
1341        _context_strip: &Entity<ContextStrip>,
1342        event: &ContextStripEvent,
1343        window: &mut Window,
1344        cx: &mut Context<Self>,
1345    ) {
1346        if let Some((_, state)) = self.editing_message.as_ref() {
1347            match event {
1348                ContextStripEvent::PickerDismissed
1349                | ContextStripEvent::BlurredEmpty
1350                | ContextStripEvent::BlurredDown => {
1351                    let editor_focus_handle = state.editor.focus_handle(cx);
1352                    window.focus(&editor_focus_handle);
1353                }
1354                ContextStripEvent::BlurredUp => {}
1355            }
1356        }
1357    }
1358
1359    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1360        let Some((message_id, state)) = self.editing_message.as_mut() else {
1361            return;
1362        };
1363
1364        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1365        state._update_token_count_task.take();
1366
1367        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1368            state.last_estimated_token_count.take();
1369            return;
1370        };
1371
1372        let editor = state.editor.clone();
1373        let thread = self.thread.clone();
1374        let message_id = *message_id;
1375
1376        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1377            if debounce {
1378                cx.background_executor()
1379                    .timer(Duration::from_millis(200))
1380                    .await;
1381            }
1382
1383            let token_count = if let Some(task) = cx
1384                .update(|cx| {
1385                    let Some(message) = thread.read(cx).message(message_id) else {
1386                        log::error!("Message that was being edited no longer exists");
1387                        return None;
1388                    };
1389                    let message_text = editor.read(cx).text(cx);
1390
1391                    if message_text.is_empty() && message.loaded_context.is_empty() {
1392                        return None;
1393                    }
1394
1395                    let mut request_message = LanguageModelRequestMessage {
1396                        role: language_model::Role::User,
1397                        content: Vec::new(),
1398                        cache: false,
1399                    };
1400
1401                    message
1402                        .loaded_context
1403                        .add_to_request_message(&mut request_message);
1404
1405                    if !message_text.is_empty() {
1406                        request_message
1407                            .content
1408                            .push(MessageContent::Text(message_text));
1409                    }
1410
1411                    let request = language_model::LanguageModelRequest {
1412                        thread_id: None,
1413                        prompt_id: None,
1414                        mode: None,
1415                        messages: vec![request_message],
1416                        tools: vec![],
1417                        tool_choice: None,
1418                        stop: vec![],
1419                        temperature: AssistantSettings::temperature_for_model(
1420                            &configured_model.model,
1421                            cx,
1422                        ),
1423                    };
1424
1425                    Some(configured_model.model.count_tokens(request, cx))
1426                })
1427                .ok()
1428                .flatten()
1429            {
1430                task.await.log_err()
1431            } else {
1432                Some(0)
1433            };
1434
1435            if let Some(token_count) = token_count {
1436                this.update(cx, |this, cx| {
1437                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1438                        return;
1439                    };
1440
1441                    state.last_estimated_token_count = Some(token_count);
1442                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1443                })
1444                .ok();
1445            };
1446        }));
1447    }
1448
1449    fn toggle_context_picker(
1450        &mut self,
1451        _: &crate::ToggleContextPicker,
1452        window: &mut Window,
1453        cx: &mut Context<Self>,
1454    ) {
1455        if let Some((_, state)) = self.editing_message.as_mut() {
1456            let handle = state.context_picker_menu_handle.clone();
1457            window.defer(cx, move |window, cx| {
1458                handle.toggle(window, cx);
1459            });
1460        }
1461    }
1462
1463    fn remove_all_context(
1464        &mut self,
1465        _: &crate::RemoveAllContext,
1466        _window: &mut Window,
1467        cx: &mut Context<Self>,
1468    ) {
1469        self.context_store.update(cx, |store, _cx| store.clear());
1470        cx.notify();
1471    }
1472
1473    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1474        if let Some((_, state)) = self.editing_message.as_mut() {
1475            if state.context_picker_menu_handle.is_deployed() {
1476                cx.propagate();
1477            } else {
1478                state.context_strip.focus_handle(cx).focus(window);
1479            }
1480        }
1481    }
1482
1483    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1484        let images = cx
1485            .read_from_clipboard()
1486            .map(|item| {
1487                item.into_entries()
1488                    .filter_map(|entry| {
1489                        if let ClipboardEntry::Image(image) = entry {
1490                            Some(image)
1491                        } else {
1492                            None
1493                        }
1494                    })
1495                    .collect::<Vec<_>>()
1496            })
1497            .unwrap_or_default();
1498
1499        if images.is_empty() {
1500            return;
1501        }
1502        cx.stop_propagation();
1503
1504        self.context_store.update(cx, |store, cx| {
1505            for image in images {
1506                store.add_image_instance(Arc::new(image), cx);
1507            }
1508        });
1509    }
1510
1511    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1512        self.editing_message.take();
1513        cx.notify();
1514    }
1515
1516    fn confirm_editing_message(
1517        &mut self,
1518        _: &menu::Confirm,
1519        window: &mut Window,
1520        cx: &mut Context<Self>,
1521    ) {
1522        let Some((message_id, state)) = self.editing_message.take() else {
1523            return;
1524        };
1525
1526        let Some(model) = self
1527            .thread
1528            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1529        else {
1530            return;
1531        };
1532
1533        if model.provider.must_accept_terms(cx) {
1534            cx.notify();
1535            return;
1536        }
1537
1538        let edited_text = state.editor.read(cx).text(cx);
1539
1540        let new_context = self
1541            .context_store
1542            .read(cx)
1543            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1544
1545        let project = self.thread.read(cx).project().clone();
1546        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1547
1548        let load_context_task =
1549            crate::context::load_context(new_context, &project, &prompt_store, cx);
1550        self._load_edited_message_context_task =
1551            Some(cx.spawn_in(window, async move |this, cx| {
1552                let context = load_context_task.await;
1553                let _ = this
1554                    .update_in(cx, |this, window, cx| {
1555                        this.thread.update(cx, |thread, cx| {
1556                            thread.edit_message(
1557                                message_id,
1558                                Role::User,
1559                                vec![MessageSegment::Text(edited_text)],
1560                                Some(context.loaded_context),
1561                                cx,
1562                            );
1563                            for message_id in this.messages_after(message_id) {
1564                                thread.delete_message(*message_id, cx);
1565                            }
1566                        });
1567
1568                        this.thread.update(cx, |thread, cx| {
1569                            thread.advance_prompt_id();
1570                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1571                        });
1572                        this._load_edited_message_context_task = None;
1573                        cx.notify();
1574                    })
1575                    .log_err();
1576            }));
1577    }
1578
1579    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1580        self.messages
1581            .iter()
1582            .position(|id| *id == message_id)
1583            .map(|index| &self.messages[index + 1..])
1584            .unwrap_or(&[])
1585    }
1586
1587    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1588        self.cancel_editing_message(&menu::Cancel, window, cx);
1589    }
1590
1591    fn handle_regenerate_click(
1592        &mut self,
1593        _: &ClickEvent,
1594        window: &mut Window,
1595        cx: &mut Context<Self>,
1596    ) {
1597        self.confirm_editing_message(&menu::Confirm, window, cx);
1598    }
1599
1600    fn handle_feedback_click(
1601        &mut self,
1602        message_id: MessageId,
1603        feedback: ThreadFeedback,
1604        window: &mut Window,
1605        cx: &mut Context<Self>,
1606    ) {
1607        let report = self.thread.update(cx, |thread, cx| {
1608            thread.report_message_feedback(message_id, feedback, cx)
1609        });
1610
1611        cx.spawn(async move |this, cx| {
1612            report.await?;
1613            this.update(cx, |_this, cx| cx.notify())
1614        })
1615        .detach_and_log_err(cx);
1616
1617        match feedback {
1618            ThreadFeedback::Positive => {
1619                self.open_feedback_editors.remove(&message_id);
1620            }
1621            ThreadFeedback::Negative => {
1622                self.handle_show_feedback_comments(message_id, window, cx);
1623            }
1624        }
1625    }
1626
1627    fn handle_show_feedback_comments(
1628        &mut self,
1629        message_id: MessageId,
1630        window: &mut Window,
1631        cx: &mut Context<Self>,
1632    ) {
1633        let buffer = cx.new(|cx| {
1634            let empty_string = String::new();
1635            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1636        });
1637
1638        let editor = cx.new(|cx| {
1639            let mut editor = Editor::new(
1640                editor::EditorMode::AutoHeight { max_lines: 4 },
1641                buffer,
1642                None,
1643                window,
1644                cx,
1645            );
1646            editor.set_placeholder_text(
1647                "What went wrong? Share your feedback so we can improve.",
1648                cx,
1649            );
1650            editor
1651        });
1652
1653        editor.read(cx).focus_handle(cx).focus(window);
1654        self.open_feedback_editors.insert(message_id, editor);
1655        cx.notify();
1656    }
1657
1658    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1659        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1660            return;
1661        };
1662
1663        let report_task = self.thread.update(cx, |thread, cx| {
1664            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1665        });
1666
1667        let comments = editor.read(cx).text(cx);
1668        if !comments.is_empty() {
1669            let thread_id = self.thread.read(cx).id().clone();
1670            let comments_value = String::from(comments.as_str());
1671
1672            let message_content = self
1673                .thread
1674                .read(cx)
1675                .message(message_id)
1676                .map(|msg| msg.to_string())
1677                .unwrap_or_default();
1678
1679            telemetry::event!(
1680                "Assistant Thread Feedback Comments",
1681                thread_id,
1682                message_id = message_id.0,
1683                message_content,
1684                comments = comments_value
1685            );
1686
1687            self.open_feedback_editors.remove(&message_id);
1688
1689            cx.spawn(async move |this, cx| {
1690                report_task.await?;
1691                this.update(cx, |_this, cx| cx.notify())
1692            })
1693            .detach_and_log_err(cx);
1694        }
1695    }
1696
1697    fn render_edit_message_editor(
1698        &self,
1699        state: &EditingMessageState,
1700        _window: &mut Window,
1701        cx: &Context<Self>,
1702    ) -> impl IntoElement {
1703        let settings = ThemeSettings::get_global(cx);
1704        let font_size = TextSize::Small
1705            .rems(cx)
1706            .to_pixels(settings.agent_font_size(cx));
1707        let line_height = font_size * 1.75;
1708
1709        let colors = cx.theme().colors();
1710
1711        let text_style = TextStyle {
1712            color: colors.text,
1713            font_family: settings.buffer_font.family.clone(),
1714            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1715            font_features: settings.buffer_font.features.clone(),
1716            font_size: font_size.into(),
1717            line_height: line_height.into(),
1718            ..Default::default()
1719        };
1720
1721        v_flex()
1722            .key_context("EditMessageEditor")
1723            .on_action(cx.listener(Self::toggle_context_picker))
1724            .on_action(cx.listener(Self::remove_all_context))
1725            .on_action(cx.listener(Self::move_up))
1726            .on_action(cx.listener(Self::cancel_editing_message))
1727            .on_action(cx.listener(Self::confirm_editing_message))
1728            .capture_action(cx.listener(Self::paste))
1729            .min_h_6()
1730            .flex_grow()
1731            .w_full()
1732            .gap_2()
1733            .child(EditorElement::new(
1734                &state.editor,
1735                EditorStyle {
1736                    background: colors.editor_background,
1737                    local_player: cx.theme().players().local(),
1738                    text: text_style,
1739                    syntax: cx.theme().syntax().clone(),
1740                    ..Default::default()
1741                },
1742            ))
1743            .child(state.context_strip.clone())
1744    }
1745
1746    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1747        let message_id = self.messages[ix];
1748        let Some(message) = self.thread.read(cx).message(message_id) else {
1749            return Empty.into_any();
1750        };
1751
1752        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1753            return Empty.into_any();
1754        };
1755
1756        let workspace = self.workspace.clone();
1757        let thread = self.thread.read(cx);
1758
1759        // Get all the data we need from thread before we start using it in closures
1760        let checkpoint = thread.checkpoint_for_message(message_id);
1761        let added_context = thread
1762            .context_for_message(message_id)
1763            .map(|context| AddedContext::new_attached(context, cx))
1764            .collect::<Vec<_>>();
1765
1766        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1767        let has_tool_uses = !tool_uses.is_empty();
1768        let is_generating = thread.is_generating();
1769        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1770
1771        let is_first_message = ix == 0;
1772        let is_last_message = ix == self.messages.len() - 1;
1773
1774        let loading_dots = (is_generating_stale && is_last_message)
1775            .then(|| AnimatedLabel::new("").size(LabelSize::Small));
1776
1777        let editing_message_state = self
1778            .editing_message
1779            .as_ref()
1780            .filter(|(id, _)| *id == message_id)
1781            .map(|(_, state)| state);
1782
1783        let colors = cx.theme().colors();
1784        let editor_bg_color = colors.editor_background;
1785
1786        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::DocumentText)
1787            .icon_size(IconSize::XSmall)
1788            .icon_color(Color::Ignored)
1789            .tooltip(Tooltip::text("Open Thread as Markdown"))
1790            .on_click({
1791                let thread = self.thread.clone();
1792                let workspace = self.workspace.clone();
1793                move |_, window, cx| {
1794                    if let Some(workspace) = workspace.upgrade() {
1795                        open_active_thread_as_markdown(thread.clone(), workspace, window, cx)
1796                            .detach_and_log_err(cx);
1797                    }
1798                }
1799            });
1800
1801        // For all items that should be aligned with the LLM's response.
1802        const RESPONSE_PADDING_X: Pixels = px(19.);
1803
1804        let show_feedback = thread.is_turn_end(ix);
1805
1806        let feedback_container = h_flex()
1807            .group("feedback_container")
1808            .mt_1()
1809            .py_2()
1810            .px(RESPONSE_PADDING_X)
1811            .mr_1()
1812            .opacity(0.4)
1813            .hover(|style| style.opacity(1.))
1814            .gap_1p5()
1815            .flex_wrap()
1816            .justify_end();
1817        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1818            Some(feedback) => feedback_container
1819                .child(
1820                    div().visible_on_hover("feedback_container").child(
1821                        Label::new(match feedback {
1822                            ThreadFeedback::Positive => "Thanks for your feedback!",
1823                            ThreadFeedback::Negative => {
1824                                "We appreciate your feedback and will use it to improve."
1825                            }
1826                        })
1827                    .color(Color::Muted)
1828                    .size(LabelSize::XSmall)
1829                    .truncate())
1830                )
1831                .child(
1832                    h_flex()
1833                        .child(
1834                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1835                                .icon_size(IconSize::XSmall)
1836                                .icon_color(match feedback {
1837                                    ThreadFeedback::Positive => Color::Accent,
1838                                    ThreadFeedback::Negative => Color::Ignored,
1839                                })
1840                                .tooltip(Tooltip::text("Helpful Response"))
1841                                .on_click(cx.listener(move |this, _, window, cx| {
1842                                    this.handle_feedback_click(
1843                                        message_id,
1844                                        ThreadFeedback::Positive,
1845                                        window,
1846                                        cx,
1847                                    );
1848                                })),
1849                        )
1850                        .child(
1851                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1852                                .icon_size(IconSize::XSmall)
1853                                .icon_color(match feedback {
1854                                    ThreadFeedback::Positive => Color::Ignored,
1855                                    ThreadFeedback::Negative => Color::Accent,
1856                                })
1857                                .tooltip(Tooltip::text("Not Helpful"))
1858                                .on_click(cx.listener(move |this, _, window, cx| {
1859                                    this.handle_feedback_click(
1860                                        message_id,
1861                                        ThreadFeedback::Negative,
1862                                        window,
1863                                        cx,
1864                                    );
1865                                })),
1866                        )
1867                        .child(open_as_markdown),
1868                )
1869                .into_any_element(),
1870            None => feedback_container
1871                .child(
1872                    div().visible_on_hover("feedback_container").child(
1873                        Label::new(
1874                            "Rating the thread sends all of your current conversation to the Zed team.",
1875                        )
1876                        .color(Color::Muted)
1877                    .size(LabelSize::XSmall)
1878                    .truncate())
1879                )
1880                .child(
1881                    h_flex()
1882                        .child(
1883                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1884                                .icon_size(IconSize::XSmall)
1885                                .icon_color(Color::Ignored)
1886                                .tooltip(Tooltip::text("Helpful Response"))
1887                                .on_click(cx.listener(move |this, _, window, cx| {
1888                                    this.handle_feedback_click(
1889                                        message_id,
1890                                        ThreadFeedback::Positive,
1891                                        window,
1892                                        cx,
1893                                    );
1894                                })),
1895                        )
1896                        .child(
1897                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1898                                .icon_size(IconSize::XSmall)
1899                                .icon_color(Color::Ignored)
1900                                .tooltip(Tooltip::text("Not Helpful"))
1901                                .on_click(cx.listener(move |this, _, window, cx| {
1902                                    this.handle_feedback_click(
1903                                        message_id,
1904                                        ThreadFeedback::Negative,
1905                                        window,
1906                                        cx,
1907                                    );
1908                                })),
1909                        )
1910                        .child(open_as_markdown),
1911                )
1912                .into_any_element(),
1913        };
1914
1915        let message_is_empty = message.should_display_content();
1916        let has_content = !message_is_empty || !added_context.is_empty();
1917
1918        let message_content = has_content.then(|| {
1919            if let Some(state) = editing_message_state.as_ref() {
1920                self.render_edit_message_editor(state, window, cx)
1921                    .into_any_element()
1922            } else {
1923                v_flex()
1924                    .w_full()
1925                    .gap_1()
1926                    .when(!message_is_empty, |parent| {
1927                        parent.child(div().min_h_6().child(self.render_message_content(
1928                            message_id,
1929                            rendered_message,
1930                            has_tool_uses,
1931                            workspace.clone(),
1932                            window,
1933                            cx,
1934                        )))
1935                    })
1936                    .when(!added_context.is_empty(), |parent| {
1937                        parent.child(h_flex().flex_wrap().gap_1().children(
1938                            added_context.into_iter().map(|added_context| {
1939                                let context = added_context.handle.clone();
1940                                ContextPill::added(added_context, false, false, None).on_click(
1941                                    Rc::new(cx.listener({
1942                                        let workspace = workspace.clone();
1943                                        move |_, _, window, cx| {
1944                                            if let Some(workspace) = workspace.upgrade() {
1945                                                open_context(&context, workspace, window, cx);
1946                                                cx.notify();
1947                                            }
1948                                        }
1949                                    })),
1950                                )
1951                            }),
1952                        ))
1953                    })
1954                    .into_any_element()
1955            }
1956        });
1957
1958        let styled_message = match message.role {
1959            Role::User => v_flex()
1960                .id(("message-container", ix))
1961                .pt_2()
1962                .pl_2()
1963                .pr_2p5()
1964                .pb_4()
1965                .child(
1966                    v_flex()
1967                        .id(("user-message", ix))
1968                        .bg(editor_bg_color)
1969                        .rounded_lg()
1970                        .shadow_md()
1971                        .border_1()
1972                        .border_color(colors.border)
1973                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1974                        .cursor_pointer()
1975                        .child(
1976                            h_flex()
1977                                .p_2p5()
1978                                .gap_1()
1979                                .children(message_content)
1980                                .when_some(editing_message_state, |this, state| {
1981                                    let focus_handle = state.editor.focus_handle(cx).clone();
1982                                    this.w_full().justify_between().child(
1983                                        h_flex()
1984                                            .gap_0p5()
1985                                            .child(
1986                                                IconButton::new(
1987                                                    "cancel-edit-message",
1988                                                    IconName::Close,
1989                                                )
1990                                                .shape(ui::IconButtonShape::Square)
1991                                                .icon_color(Color::Error)
1992                                                .tooltip({
1993                                                    let focus_handle = focus_handle.clone();
1994                                                    move |window, cx| {
1995                                                        Tooltip::for_action_in(
1996                                                            "Cancel Edit",
1997                                                            &menu::Cancel,
1998                                                            &focus_handle,
1999                                                            window,
2000                                                            cx,
2001                                                        )
2002                                                    }
2003                                                })
2004                                                .on_click(cx.listener(Self::handle_cancel_click)),
2005                                            )
2006                                            .child(
2007                                                IconButton::new(
2008                                                    "confirm-edit-message",
2009                                                    IconName::Check,
2010                                                )
2011                                                .disabled(state.editor.read(cx).is_empty(cx))
2012                                                .shape(ui::IconButtonShape::Square)
2013                                                .icon_color(Color::Success)
2014                                                .tooltip({
2015                                                    let focus_handle = focus_handle.clone();
2016                                                    move |window, cx| {
2017                                                        Tooltip::for_action_in(
2018                                                            "Regenerate",
2019                                                            &menu::Confirm,
2020                                                            &focus_handle,
2021                                                            window,
2022                                                            cx,
2023                                                        )
2024                                                    }
2025                                                })
2026                                                .on_click(
2027                                                    cx.listener(Self::handle_regenerate_click),
2028                                                ),
2029                                            ),
2030                                    )
2031                                }),
2032                        )
2033                        .when(editing_message_state.is_none(), |this| {
2034                            this.tooltip(Tooltip::text("Click To Edit"))
2035                        })
2036                        .on_click(cx.listener({
2037                            let message_segments = message.segments.clone();
2038                            move |this, _, window, cx| {
2039                                this.start_editing_message(
2040                                    message_id,
2041                                    &message_segments,
2042                                    window,
2043                                    cx,
2044                                );
2045                            }
2046                        })),
2047                ),
2048            Role::Assistant => v_flex()
2049                .id(("message-container", ix))
2050                .px(RESPONSE_PADDING_X)
2051                .gap_2()
2052                .children(message_content)
2053                .when(has_tool_uses, |parent| {
2054                    parent.children(tool_uses.into_iter().map(|tool_use| {
2055                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2056                    }))
2057                }),
2058            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2059                v_flex()
2060                    .bg(colors.editor_background)
2061                    .rounded_sm()
2062                    .child(div().p_4().children(message_content)),
2063            ),
2064        };
2065
2066        let after_editing_message = self
2067            .editing_message
2068            .as_ref()
2069            .map_or(false, |(editing_message_id, _)| {
2070                message_id > *editing_message_id
2071            });
2072
2073        let panel_background = cx.theme().colors().panel_background;
2074
2075        v_flex()
2076            .w_full()
2077            .map(|parent| {
2078                if let Some(checkpoint) = checkpoint.filter(|_| !is_generating) {
2079                    let mut is_pending = false;
2080                    let mut error = None;
2081                    if let Some(last_restore_checkpoint) =
2082                        self.thread.read(cx).last_restore_checkpoint()
2083                    {
2084                        if last_restore_checkpoint.message_id() == message_id {
2085                            match last_restore_checkpoint {
2086                                LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2087                                LastRestoreCheckpoint::Error { error: err, .. } => {
2088                                    error = Some(err.clone());
2089                                }
2090                            }
2091                        }
2092                    }
2093
2094                    let restore_checkpoint_button =
2095                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2096                            .icon(if error.is_some() {
2097                                IconName::XCircle
2098                            } else {
2099                                IconName::Undo
2100                            })
2101                            .icon_size(IconSize::XSmall)
2102                            .icon_position(IconPosition::Start)
2103                            .icon_color(if error.is_some() {
2104                                Some(Color::Error)
2105                            } else {
2106                                None
2107                            })
2108                            .label_size(LabelSize::XSmall)
2109                            .disabled(is_pending)
2110                            .on_click(cx.listener(move |this, _, _window, cx| {
2111                                this.thread.update(cx, |thread, cx| {
2112                                    thread
2113                                        .restore_checkpoint(checkpoint.clone(), cx)
2114                                        .detach_and_log_err(cx);
2115                                });
2116                            }));
2117
2118                    let restore_checkpoint_button = if is_pending {
2119                        restore_checkpoint_button
2120                            .with_animation(
2121                                ("pulsating-restore-checkpoint-button", ix),
2122                                Animation::new(Duration::from_secs(2))
2123                                    .repeat()
2124                                    .with_easing(pulsating_between(0.6, 1.)),
2125                                |label, delta| label.alpha(delta),
2126                            )
2127                            .into_any_element()
2128                    } else if let Some(error) = error {
2129                        restore_checkpoint_button
2130                            .tooltip(Tooltip::text(error.to_string()))
2131                            .into_any_element()
2132                    } else {
2133                        restore_checkpoint_button.into_any_element()
2134                    };
2135
2136                    parent.child(
2137                        h_flex()
2138                            .pt_2p5()
2139                            .px_2p5()
2140                            .w_full()
2141                            .gap_1()
2142                            .child(ui::Divider::horizontal())
2143                            .child(restore_checkpoint_button)
2144                            .child(ui::Divider::horizontal()),
2145                    )
2146                } else {
2147                    parent
2148                }
2149            })
2150            .when(is_first_message, |parent| {
2151                parent.child(self.render_rules_item(cx))
2152            })
2153            .child(styled_message)
2154            .when(is_generating && is_last_message, |this| {
2155                this.child(
2156                    h_flex()
2157                        .h_8()
2158                        .mt_2()
2159                        .mb_4()
2160                        .ml_4()
2161                        .py_1p5()
2162                        .when_some(loading_dots, |this, loading_dots| this.child(loading_dots)),
2163                )
2164            })
2165            .when(show_feedback, move |parent| {
2166                parent.child(feedback_items).when_some(
2167                    self.open_feedback_editors.get(&message_id),
2168                    move |parent, feedback_editor| {
2169                        let focus_handle = feedback_editor.focus_handle(cx);
2170                        parent.child(
2171                            v_flex()
2172                                .key_context("AgentFeedbackMessageEditor")
2173                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2174                                    this.open_feedback_editors.remove(&message_id);
2175                                    cx.notify();
2176                                }))
2177                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2178                                    this.submit_feedback_message(message_id, cx);
2179                                    cx.notify();
2180                                }))
2181                                .on_action(cx.listener(Self::confirm_editing_message))
2182                                .mb_2()
2183                                .mx_4()
2184                                .p_2()
2185                                .rounded_md()
2186                                .border_1()
2187                                .border_color(cx.theme().colors().border)
2188                                .bg(cx.theme().colors().editor_background)
2189                                .child(feedback_editor.clone())
2190                                .child(
2191                                    h_flex()
2192                                        .gap_1()
2193                                        .justify_end()
2194                                        .child(
2195                                            Button::new("dismiss-feedback-message", "Cancel")
2196                                                .label_size(LabelSize::Small)
2197                                                .key_binding(
2198                                                    KeyBinding::for_action_in(
2199                                                        &menu::Cancel,
2200                                                        &focus_handle,
2201                                                        window,
2202                                                        cx,
2203                                                    )
2204                                                    .map(|kb| kb.size(rems_from_px(10.))),
2205                                                )
2206                                                .on_click(cx.listener(
2207                                                    move |this, _, _window, cx| {
2208                                                        this.open_feedback_editors
2209                                                            .remove(&message_id);
2210                                                        cx.notify();
2211                                                    },
2212                                                )),
2213                                        )
2214                                        .child(
2215                                            Button::new(
2216                                                "submit-feedback-message",
2217                                                "Share Feedback",
2218                                            )
2219                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2220                                            .label_size(LabelSize::Small)
2221                                            .key_binding(
2222                                                KeyBinding::for_action_in(
2223                                                    &menu::Confirm,
2224                                                    &focus_handle,
2225                                                    window,
2226                                                    cx,
2227                                                )
2228                                                .map(|kb| kb.size(rems_from_px(10.))),
2229                                            )
2230                                            .on_click(
2231                                                cx.listener(move |this, _, _window, cx| {
2232                                                    this.submit_feedback_message(message_id, cx);
2233                                                    cx.notify()
2234                                                }),
2235                                            ),
2236                                        ),
2237                                ),
2238                        )
2239                    },
2240                )
2241            })
2242            .when(after_editing_message, |parent| {
2243                // Backdrop to dim out the whole thread below the editing user message
2244                parent.relative().child(
2245                    div()
2246                        .occlude()
2247                        .absolute()
2248                        .inset_0()
2249                        .size_full()
2250                        .bg(panel_background)
2251                        .opacity(0.8),
2252                )
2253            })
2254            .into_any()
2255    }
2256
2257    fn render_message_content(
2258        &self,
2259        message_id: MessageId,
2260        rendered_message: &RenderedMessage,
2261        has_tool_uses: bool,
2262        workspace: WeakEntity<Workspace>,
2263        window: &Window,
2264        cx: &Context<Self>,
2265    ) -> impl IntoElement {
2266        let is_last_message = self.messages.last() == Some(&message_id);
2267        let is_generating = self.thread.read(cx).is_generating();
2268        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2269            rendered_message
2270                .segments
2271                .iter()
2272                .enumerate()
2273                .next_back()
2274                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2275                .map(|(index, _)| index)
2276        } else {
2277            None
2278        };
2279
2280        let message_role = self
2281            .thread
2282            .read(cx)
2283            .message(message_id)
2284            .map(|m| m.role)
2285            .unwrap_or(Role::User);
2286
2287        let is_assistant_message = message_role == Role::Assistant;
2288        let is_user_message = message_role == Role::User;
2289
2290        v_flex()
2291            .text_ui(cx)
2292            .gap_2()
2293            .when(is_user_message, |this| this.text_xs())
2294            .children(
2295                rendered_message.segments.iter().enumerate().map(
2296                    |(index, segment)| match segment {
2297                        RenderedMessageSegment::Thinking {
2298                            content,
2299                            scroll_handle,
2300                        } => self
2301                            .render_message_thinking_segment(
2302                                message_id,
2303                                index,
2304                                content.clone(),
2305                                &scroll_handle,
2306                                Some(index) == pending_thinking_segment_index,
2307                                window,
2308                                cx,
2309                            )
2310                            .into_any_element(),
2311                        RenderedMessageSegment::Text(markdown) => {
2312                            let markdown_element = MarkdownElement::new(
2313                                markdown.clone(),
2314                                if is_user_message {
2315                                    let mut style = default_markdown_style(window, cx);
2316                                    let mut text_style = window.text_style();
2317                                    let theme_settings = ThemeSettings::get_global(cx);
2318
2319                                    let buffer_font = theme_settings.buffer_font.family.clone();
2320                                    let buffer_font_size = TextSize::Small.rems(cx);
2321
2322                                    text_style.refine(&TextStyleRefinement {
2323                                        font_family: Some(buffer_font),
2324                                        font_size: Some(buffer_font_size.into()),
2325                                        ..Default::default()
2326                                    });
2327
2328                                    style.base_text_style = text_style;
2329                                    style
2330                                } else {
2331                                    default_markdown_style(window, cx)
2332                                },
2333                            );
2334
2335                            let markdown_element = if is_assistant_message {
2336                                markdown_element.code_block_renderer(
2337                                    markdown::CodeBlockRenderer::Custom {
2338                                        render: Arc::new({
2339                                            let workspace = workspace.clone();
2340                                            let active_thread = cx.entity();
2341                                            move |kind,
2342                                                  parsed_markdown,
2343                                                  range,
2344                                                  metadata,
2345                                                  window,
2346                                                  cx| {
2347                                                render_markdown_code_block(
2348                                                    message_id,
2349                                                    range.start,
2350                                                    kind,
2351                                                    parsed_markdown,
2352                                                    metadata,
2353                                                    active_thread.clone(),
2354                                                    workspace.clone(),
2355                                                    window,
2356                                                    cx,
2357                                                )
2358                                            }
2359                                        }),
2360                                        transform: Some(Arc::new({
2361                                            let active_thread = cx.entity();
2362                                            let editor_bg = cx.theme().colors().editor_background;
2363
2364                                            move |el, range, metadata, _, cx| {
2365                                                let is_expanded = active_thread
2366                                                    .read(cx)
2367                                                    .expanded_code_blocks
2368                                                    .get(&(message_id, range.start))
2369                                                    .copied()
2370                                                    .unwrap_or(true);
2371
2372                                                if is_expanded
2373                                                    || metadata.line_count
2374                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2375                                                {
2376                                                    return el;
2377                                                }
2378                                                el.child(
2379                                                    div()
2380                                                        .absolute()
2381                                                        .bottom_0()
2382                                                        .left_0()
2383                                                        .w_full()
2384                                                        .h_1_4()
2385                                                        .rounded_b_lg()
2386                                                        .bg(linear_gradient(
2387                                                            0.,
2388                                                            linear_color_stop(editor_bg, 0.),
2389                                                            linear_color_stop(
2390                                                                editor_bg.opacity(0.),
2391                                                                1.,
2392                                                            ),
2393                                                        )),
2394                                                )
2395                                            }
2396                                        })),
2397                                    },
2398                                )
2399                            } else {
2400                                markdown_element.code_block_renderer(
2401                                    markdown::CodeBlockRenderer::Default {
2402                                        copy_button: false,
2403                                        border: true,
2404                                    },
2405                                )
2406                            };
2407
2408                            div()
2409                                .child(markdown_element.on_url_click({
2410                                    let workspace = self.workspace.clone();
2411                                    move |text, window, cx| {
2412                                        open_markdown_link(text, workspace.clone(), window, cx);
2413                                    }
2414                                }))
2415                                .into_any_element()
2416                        }
2417                    },
2418                ),
2419            )
2420    }
2421
2422    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2423        cx.theme().colors().border.opacity(0.5)
2424    }
2425
2426    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2427        cx.theme()
2428            .colors()
2429            .element_background
2430            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2431    }
2432
2433    fn render_message_thinking_segment(
2434        &self,
2435        message_id: MessageId,
2436        ix: usize,
2437        markdown: Entity<Markdown>,
2438        scroll_handle: &ScrollHandle,
2439        pending: bool,
2440        window: &Window,
2441        cx: &Context<Self>,
2442    ) -> impl IntoElement {
2443        let is_open = self
2444            .expanded_thinking_segments
2445            .get(&(message_id, ix))
2446            .copied()
2447            .unwrap_or_default();
2448
2449        let editor_bg = cx.theme().colors().panel_background;
2450
2451        div().map(|this| {
2452            if pending {
2453                this.v_flex()
2454                    .mt_neg_2()
2455                    .mb_1p5()
2456                    .child(
2457                        h_flex()
2458                            .group("disclosure-header")
2459                            .justify_between()
2460                            .child(
2461                                h_flex()
2462                                    .gap_1p5()
2463                                    .child(
2464                                        Icon::new(IconName::LightBulb)
2465                                            .size(IconSize::XSmall)
2466                                            .color(Color::Muted),
2467                                    )
2468                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2469                            )
2470                            .child(
2471                                h_flex()
2472                                    .gap_1()
2473                                    .child(
2474                                        div().visible_on_hover("disclosure-header").child(
2475                                            Disclosure::new("thinking-disclosure", is_open)
2476                                                .opened_icon(IconName::ChevronUp)
2477                                                .closed_icon(IconName::ChevronDown)
2478                                                .on_click(cx.listener({
2479                                                    move |this, _event, _window, _cx| {
2480                                                        let is_open = this
2481                                                            .expanded_thinking_segments
2482                                                            .entry((message_id, ix))
2483                                                            .or_insert(false);
2484
2485                                                        *is_open = !*is_open;
2486                                                    }
2487                                                })),
2488                                        ),
2489                                    )
2490                                    .child({
2491                                        Icon::new(IconName::ArrowCircle)
2492                                            .color(Color::Accent)
2493                                            .size(IconSize::Small)
2494                                            .with_animation(
2495                                                "arrow-circle",
2496                                                Animation::new(Duration::from_secs(2)).repeat(),
2497                                                |icon, delta| {
2498                                                    icon.transform(Transformation::rotate(
2499                                                        percentage(delta),
2500                                                    ))
2501                                                },
2502                                            )
2503                                    }),
2504                            ),
2505                    )
2506                    .when(!is_open, |this| {
2507                        let gradient_overlay = div()
2508                            .rounded_b_lg()
2509                            .h_full()
2510                            .absolute()
2511                            .w_full()
2512                            .bottom_0()
2513                            .left_0()
2514                            .bg(linear_gradient(
2515                                180.,
2516                                linear_color_stop(editor_bg, 1.),
2517                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2518                            ));
2519
2520                        this.child(
2521                            div()
2522                                .relative()
2523                                .bg(editor_bg)
2524                                .rounded_b_lg()
2525                                .mt_2()
2526                                .pl_4()
2527                                .child(
2528                                    div()
2529                                        .id(("thinking-content", ix))
2530                                        .max_h_20()
2531                                        .track_scroll(scroll_handle)
2532                                        .text_ui_sm(cx)
2533                                        .overflow_hidden()
2534                                        .child(
2535                                            MarkdownElement::new(
2536                                                markdown.clone(),
2537                                                default_markdown_style(window, cx),
2538                                            )
2539                                            .on_url_click({
2540                                                let workspace = self.workspace.clone();
2541                                                move |text, window, cx| {
2542                                                    open_markdown_link(
2543                                                        text,
2544                                                        workspace.clone(),
2545                                                        window,
2546                                                        cx,
2547                                                    );
2548                                                }
2549                                            }),
2550                                        ),
2551                                )
2552                                .child(gradient_overlay),
2553                        )
2554                    })
2555                    .when(is_open, |this| {
2556                        this.child(
2557                            div()
2558                                .id(("thinking-content", ix))
2559                                .h_full()
2560                                .bg(editor_bg)
2561                                .text_ui_sm(cx)
2562                                .child(
2563                                    MarkdownElement::new(
2564                                        markdown.clone(),
2565                                        default_markdown_style(window, cx),
2566                                    )
2567                                    .on_url_click({
2568                                        let workspace = self.workspace.clone();
2569                                        move |text, window, cx| {
2570                                            open_markdown_link(text, workspace.clone(), window, cx);
2571                                        }
2572                                    }),
2573                                ),
2574                        )
2575                    })
2576            } else {
2577                this.v_flex()
2578                    .mt_neg_2()
2579                    .child(
2580                        h_flex()
2581                            .group("disclosure-header")
2582                            .pr_1()
2583                            .justify_between()
2584                            .opacity(0.8)
2585                            .hover(|style| style.opacity(1.))
2586                            .child(
2587                                h_flex()
2588                                    .gap_1p5()
2589                                    .child(
2590                                        Icon::new(IconName::LightBulb)
2591                                            .size(IconSize::XSmall)
2592                                            .color(Color::Muted),
2593                                    )
2594                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2595                            )
2596                            .child(
2597                                div().visible_on_hover("disclosure-header").child(
2598                                    Disclosure::new("thinking-disclosure", is_open)
2599                                        .opened_icon(IconName::ChevronUp)
2600                                        .closed_icon(IconName::ChevronDown)
2601                                        .on_click(cx.listener({
2602                                            move |this, _event, _window, _cx| {
2603                                                let is_open = this
2604                                                    .expanded_thinking_segments
2605                                                    .entry((message_id, ix))
2606                                                    .or_insert(false);
2607
2608                                                *is_open = !*is_open;
2609                                            }
2610                                        })),
2611                                ),
2612                            ),
2613                    )
2614                    .child(
2615                        div()
2616                            .id(("thinking-content", ix))
2617                            .relative()
2618                            .mt_1p5()
2619                            .ml_1p5()
2620                            .pl_2p5()
2621                            .border_l_1()
2622                            .border_color(cx.theme().colors().border_variant)
2623                            .text_ui_sm(cx)
2624                            .when(is_open, |this| {
2625                                this.child(
2626                                    MarkdownElement::new(
2627                                        markdown.clone(),
2628                                        default_markdown_style(window, cx),
2629                                    )
2630                                    .on_url_click({
2631                                        let workspace = self.workspace.clone();
2632                                        move |text, window, cx| {
2633                                            open_markdown_link(text, workspace.clone(), window, cx);
2634                                        }
2635                                    }),
2636                                )
2637                            }),
2638                    )
2639            }
2640        })
2641    }
2642
2643    fn render_tool_use(
2644        &self,
2645        tool_use: ToolUse,
2646        window: &mut Window,
2647        workspace: WeakEntity<Workspace>,
2648        cx: &mut Context<Self>,
2649    ) -> impl IntoElement + use<> {
2650        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2651            return card.render(&tool_use.status, window, workspace, cx);
2652        }
2653
2654        let is_open = self
2655            .expanded_tool_uses
2656            .get(&tool_use.id)
2657            .copied()
2658            .unwrap_or_default();
2659
2660        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2661
2662        let fs = self
2663            .workspace
2664            .upgrade()
2665            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2666        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2667        let needs_confirmation_tools = tool_use.needs_confirmation;
2668
2669        let status_icons = div().child(match &tool_use.status {
2670            ToolUseStatus::NeedsConfirmation => {
2671                let icon = Icon::new(IconName::Warning)
2672                    .color(Color::Warning)
2673                    .size(IconSize::Small);
2674                icon.into_any_element()
2675            }
2676            ToolUseStatus::Pending
2677            | ToolUseStatus::InputStillStreaming
2678            | ToolUseStatus::Running => {
2679                let icon = Icon::new(IconName::ArrowCircle)
2680                    .color(Color::Accent)
2681                    .size(IconSize::Small);
2682                icon.with_animation(
2683                    "arrow-circle",
2684                    Animation::new(Duration::from_secs(2)).repeat(),
2685                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2686                )
2687                .into_any_element()
2688            }
2689            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2690            ToolUseStatus::Error(_) => {
2691                let icon = Icon::new(IconName::Close)
2692                    .color(Color::Error)
2693                    .size(IconSize::Small);
2694                icon.into_any_element()
2695            }
2696        });
2697
2698        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2699        let results_content_container = || v_flex().p_2().gap_0p5();
2700
2701        let results_content = v_flex()
2702            .gap_1()
2703            .child(
2704                results_content_container()
2705                    .child(
2706                        Label::new("Input")
2707                            .size(LabelSize::XSmall)
2708                            .color(Color::Muted)
2709                            .buffer_font(cx),
2710                    )
2711                    .child(
2712                        div()
2713                            .w_full()
2714                            .text_ui_sm(cx)
2715                            .children(rendered_tool_use.as_ref().map(|rendered| {
2716                                MarkdownElement::new(
2717                                    rendered.input.clone(),
2718                                    tool_use_markdown_style(window, cx),
2719                                )
2720                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2721                                    copy_button: false,
2722                                    border: false,
2723                                })
2724                                .on_url_click({
2725                                    let workspace = self.workspace.clone();
2726                                    move |text, window, cx| {
2727                                        open_markdown_link(text, workspace.clone(), window, cx);
2728                                    }
2729                                })
2730                            })),
2731                    ),
2732            )
2733            .map(|container| match tool_use.status {
2734                ToolUseStatus::Finished(_) => container.child(
2735                    results_content_container()
2736                        .border_t_1()
2737                        .border_color(self.tool_card_border_color(cx))
2738                        .child(
2739                            Label::new("Result")
2740                                .size(LabelSize::XSmall)
2741                                .color(Color::Muted)
2742                                .buffer_font(cx),
2743                        )
2744                        .child(div().w_full().text_ui_sm(cx).children(
2745                            rendered_tool_use.as_ref().map(|rendered| {
2746                                MarkdownElement::new(
2747                                    rendered.output.clone(),
2748                                    tool_use_markdown_style(window, cx),
2749                                )
2750                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2751                                    copy_button: false,
2752                                    border: false,
2753                                })
2754                                .on_url_click({
2755                                    let workspace = self.workspace.clone();
2756                                    move |text, window, cx| {
2757                                        open_markdown_link(text, workspace.clone(), window, cx);
2758                                    }
2759                                })
2760                                .into_any_element()
2761                            }),
2762                        )),
2763                ),
2764                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2765                    results_content_container()
2766                        .border_t_1()
2767                        .border_color(self.tool_card_border_color(cx))
2768                        .child(
2769                            h_flex()
2770                                .gap_1()
2771                                .child(
2772                                    Icon::new(IconName::ArrowCircle)
2773                                        .size(IconSize::Small)
2774                                        .color(Color::Accent)
2775                                        .with_animation(
2776                                            "arrow-circle",
2777                                            Animation::new(Duration::from_secs(2)).repeat(),
2778                                            |icon, delta| {
2779                                                icon.transform(Transformation::rotate(percentage(
2780                                                    delta,
2781                                                )))
2782                                            },
2783                                        ),
2784                                )
2785                                .child(
2786                                    Label::new("Running…")
2787                                        .size(LabelSize::XSmall)
2788                                        .color(Color::Muted)
2789                                        .buffer_font(cx),
2790                                ),
2791                        ),
2792                ),
2793                ToolUseStatus::Error(_) => container.child(
2794                    results_content_container()
2795                        .border_t_1()
2796                        .border_color(self.tool_card_border_color(cx))
2797                        .child(
2798                            Label::new("Error")
2799                                .size(LabelSize::XSmall)
2800                                .color(Color::Muted)
2801                                .buffer_font(cx),
2802                        )
2803                        .child(
2804                            div()
2805                                .text_ui_sm(cx)
2806                                .children(rendered_tool_use.as_ref().map(|rendered| {
2807                                    MarkdownElement::new(
2808                                        rendered.output.clone(),
2809                                        tool_use_markdown_style(window, cx),
2810                                    )
2811                                    .on_url_click({
2812                                        let workspace = self.workspace.clone();
2813                                        move |text, window, cx| {
2814                                            open_markdown_link(text, workspace.clone(), window, cx);
2815                                        }
2816                                    })
2817                                    .into_any_element()
2818                                })),
2819                        ),
2820                ),
2821                ToolUseStatus::Pending => container,
2822                ToolUseStatus::NeedsConfirmation => container.child(
2823                    results_content_container()
2824                        .border_t_1()
2825                        .border_color(self.tool_card_border_color(cx))
2826                        .child(
2827                            Label::new("Asking Permission")
2828                                .size(LabelSize::Small)
2829                                .color(Color::Muted)
2830                                .buffer_font(cx),
2831                        ),
2832                ),
2833            });
2834
2835        let gradient_overlay = |color: Hsla| {
2836            div()
2837                .h_full()
2838                .absolute()
2839                .w_12()
2840                .bottom_0()
2841                .map(|element| {
2842                    if is_status_finished {
2843                        element.right_6()
2844                    } else {
2845                        element.right(px(44.))
2846                    }
2847                })
2848                .bg(linear_gradient(
2849                    90.,
2850                    linear_color_stop(color, 1.),
2851                    linear_color_stop(color.opacity(0.2), 0.),
2852                ))
2853        };
2854
2855        v_flex().gap_1().mb_2().map(|element| {
2856            if !needs_confirmation_tools {
2857                element.child(
2858                    v_flex()
2859                        .child(
2860                            h_flex()
2861                                .group("disclosure-header")
2862                                .relative()
2863                                .gap_1p5()
2864                                .justify_between()
2865                                .opacity(0.8)
2866                                .hover(|style| style.opacity(1.))
2867                                .when(!is_status_finished, |this| this.pr_2())
2868                                .child(
2869                                    h_flex()
2870                                        .id("tool-label-container")
2871                                        .gap_1p5()
2872                                        .max_w_full()
2873                                        .overflow_x_scroll()
2874                                        .child(
2875                                            Icon::new(tool_use.icon)
2876                                                .size(IconSize::XSmall)
2877                                                .color(Color::Muted),
2878                                        )
2879                                        .child(
2880                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2881                                                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| {
2882                                                    open_markdown_link(text, workspace.clone(), window, cx);
2883                                                }}))
2884                                            ),
2885                                        ),
2886                                )
2887                                .child(
2888                                    h_flex()
2889                                        .gap_1()
2890                                        .child(
2891                                            div().visible_on_hover("disclosure-header").child(
2892                                                Disclosure::new("tool-use-disclosure", is_open)
2893                                                    .opened_icon(IconName::ChevronUp)
2894                                                    .closed_icon(IconName::ChevronDown)
2895                                                    .on_click(cx.listener({
2896                                                        let tool_use_id = tool_use.id.clone();
2897                                                        move |this, _event, _window, _cx| {
2898                                                            let is_open = this
2899                                                                .expanded_tool_uses
2900                                                                .entry(tool_use_id.clone())
2901                                                                .or_insert(false);
2902
2903                                                            *is_open = !*is_open;
2904                                                        }
2905                                                    })),
2906                                            ),
2907                                        )
2908                                        .child(status_icons),
2909                                )
2910                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2911                        )
2912                        .map(|parent| {
2913                            if !is_open {
2914                                return parent;
2915                            }
2916
2917                            parent.child(
2918                                v_flex()
2919                                    .mt_1()
2920                                    .border_1()
2921                                    .border_color(self.tool_card_border_color(cx))
2922                                    .bg(cx.theme().colors().editor_background)
2923                                    .rounded_lg()
2924                                    .child(results_content),
2925                            )
2926                        }),
2927                )
2928            } else {
2929                v_flex()
2930                    .mb_2()
2931                    .rounded_lg()
2932                    .border_1()
2933                    .border_color(self.tool_card_border_color(cx))
2934                    .overflow_hidden()
2935                    .child(
2936                        h_flex()
2937                            .group("disclosure-header")
2938                            .relative()
2939                            .justify_between()
2940                            .py_1()
2941                            .map(|element| {
2942                                if is_status_finished {
2943                                    element.pl_2().pr_0p5()
2944                                } else {
2945                                    element.px_2()
2946                                }
2947                            })
2948                            .bg(self.tool_card_header_bg(cx))
2949                            .map(|element| {
2950                                if is_open {
2951                                    element.border_b_1().rounded_t_md()
2952                                } else if needs_confirmation {
2953                                    element.rounded_t_md()
2954                                } else {
2955                                    element.rounded_md()
2956                                }
2957                            })
2958                            .border_color(self.tool_card_border_color(cx))
2959                            .child(
2960                                h_flex()
2961                                    .id("tool-label-container")
2962                                    .gap_1p5()
2963                                    .max_w_full()
2964                                    .overflow_x_scroll()
2965                                    .child(
2966                                        Icon::new(tool_use.icon)
2967                                            .size(IconSize::XSmall)
2968                                            .color(Color::Muted),
2969                                    )
2970                                    .child(
2971                                        h_flex().pr_8().text_ui_sm(cx).children(
2972                                            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| {
2973                                                open_markdown_link(text, workspace.clone(), window, cx);
2974                                            }}))
2975                                        ),
2976                                    ),
2977                            )
2978                            .child(
2979                                h_flex()
2980                                    .gap_1()
2981                                    .child(
2982                                        div().visible_on_hover("disclosure-header").child(
2983                                            Disclosure::new("tool-use-disclosure", is_open)
2984                                                .opened_icon(IconName::ChevronUp)
2985                                                .closed_icon(IconName::ChevronDown)
2986                                                .on_click(cx.listener({
2987                                                    let tool_use_id = tool_use.id.clone();
2988                                                    move |this, _event, _window, _cx| {
2989                                                        let is_open = this
2990                                                            .expanded_tool_uses
2991                                                            .entry(tool_use_id.clone())
2992                                                            .or_insert(false);
2993
2994                                                        *is_open = !*is_open;
2995                                                    }
2996                                                })),
2997                                        ),
2998                                    )
2999                                    .child(status_icons),
3000                            )
3001                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
3002                    )
3003                    .map(|parent| {
3004                        if !is_open {
3005                            return parent;
3006                        }
3007
3008                        parent.child(
3009                            v_flex()
3010                                .bg(cx.theme().colors().editor_background)
3011                                .map(|element| {
3012                                    if  needs_confirmation {
3013                                        element.rounded_none()
3014                                    } else {
3015                                        element.rounded_b_lg()
3016                                    }
3017                                })
3018                                .child(results_content),
3019                        )
3020                    })
3021                    .when(needs_confirmation, |this| {
3022                        this.child(
3023                            h_flex()
3024                                .py_1()
3025                                .pl_2()
3026                                .pr_1()
3027                                .gap_1()
3028                                .justify_between()
3029                                .bg(cx.theme().colors().editor_background)
3030                                .border_t_1()
3031                                .border_color(self.tool_card_border_color(cx))
3032                                .rounded_b_lg()
3033                                .child(
3034                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3035                                )
3036                                .child(
3037                                    h_flex()
3038                                        .gap_0p5()
3039                                        .child({
3040                                            let tool_id = tool_use.id.clone();
3041                                            Button::new(
3042                                                "always-allow-tool-action",
3043                                                "Always Allow",
3044                                            )
3045                                            .label_size(LabelSize::Small)
3046                                            .icon(IconName::CheckDouble)
3047                                            .icon_position(IconPosition::Start)
3048                                            .icon_size(IconSize::Small)
3049                                            .icon_color(Color::Success)
3050                                            .tooltip(move |window, cx|  {
3051                                                Tooltip::with_meta(
3052                                                    "Never ask for permission",
3053                                                    None,
3054                                                    "Restore the original behavior in your Agent Panel settings",
3055                                                    window,
3056                                                    cx,
3057                                                )
3058                                            })
3059                                            .on_click(cx.listener(
3060                                                move |this, event, window, cx| {
3061                                                    if let Some(fs) = fs.clone() {
3062                                                        update_settings_file::<AssistantSettings>(
3063                                                            fs.clone(),
3064                                                            cx,
3065                                                            |settings, _| {
3066                                                                settings.set_always_allow_tool_actions(true);
3067                                                            },
3068                                                        );
3069                                                    }
3070                                                    this.handle_allow_tool(
3071                                                        tool_id.clone(),
3072                                                        event,
3073                                                        window,
3074                                                        cx,
3075                                                    )
3076                                                },
3077                                            ))
3078                                        })
3079                                        .child(ui::Divider::vertical())
3080                                        .child({
3081                                            let tool_id = tool_use.id.clone();
3082                                            Button::new("allow-tool-action", "Allow")
3083                                                .label_size(LabelSize::Small)
3084                                                .icon(IconName::Check)
3085                                                .icon_position(IconPosition::Start)
3086                                                .icon_size(IconSize::Small)
3087                                                .icon_color(Color::Success)
3088                                                .on_click(cx.listener(
3089                                                    move |this, event, window, cx| {
3090                                                        this.handle_allow_tool(
3091                                                            tool_id.clone(),
3092                                                            event,
3093                                                            window,
3094                                                            cx,
3095                                                        )
3096                                                    },
3097                                                ))
3098                                        })
3099                                        .child({
3100                                            let tool_id = tool_use.id.clone();
3101                                            let tool_name: Arc<str> = tool_use.name.into();
3102                                            Button::new("deny-tool", "Deny")
3103                                                .label_size(LabelSize::Small)
3104                                                .icon(IconName::Close)
3105                                                .icon_position(IconPosition::Start)
3106                                                .icon_size(IconSize::Small)
3107                                                .icon_color(Color::Error)
3108                                                .on_click(cx.listener(
3109                                                    move |this, event, window, cx| {
3110                                                        this.handle_deny_tool(
3111                                                            tool_id.clone(),
3112                                                            tool_name.clone(),
3113                                                            event,
3114                                                            window,
3115                                                            cx,
3116                                                        )
3117                                                    },
3118                                                ))
3119                                        }),
3120                                ),
3121                        )
3122                    })
3123            }
3124        }).into_any_element()
3125    }
3126
3127    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3128        let project_context = self.thread.read(cx).project_context();
3129        let project_context = project_context.borrow();
3130        let Some(project_context) = project_context.as_ref() else {
3131            return div().into_any();
3132        };
3133
3134        let user_rules_text = if project_context.user_rules.is_empty() {
3135            None
3136        } else if project_context.user_rules.len() == 1 {
3137            let user_rules = &project_context.user_rules[0];
3138
3139            match user_rules.title.as_ref() {
3140                Some(title) => Some(format!("Using \"{title}\" user rule")),
3141                None => Some("Using user rule".into()),
3142            }
3143        } else {
3144            Some(format!(
3145                "Using {} user rules",
3146                project_context.user_rules.len()
3147            ))
3148        };
3149
3150        let first_user_rules_id = project_context
3151            .user_rules
3152            .first()
3153            .map(|user_rules| user_rules.uuid.0);
3154
3155        let rules_files = project_context
3156            .worktrees
3157            .iter()
3158            .filter_map(|worktree| worktree.rules_file.as_ref())
3159            .collect::<Vec<_>>();
3160
3161        let rules_file_text = match rules_files.as_slice() {
3162            &[] => None,
3163            &[rules_file] => Some(format!(
3164                "Using project {:?} file",
3165                rules_file.path_in_worktree
3166            )),
3167            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3168        };
3169
3170        if user_rules_text.is_none() && rules_file_text.is_none() {
3171            return div().into_any();
3172        }
3173
3174        v_flex()
3175            .pt_2()
3176            .px_2p5()
3177            .gap_1()
3178            .when_some(user_rules_text, |parent, user_rules_text| {
3179                parent.child(
3180                    h_flex()
3181                        .w_full()
3182                        .child(
3183                            Icon::new(RULES_ICON)
3184                                .size(IconSize::XSmall)
3185                                .color(Color::Disabled),
3186                        )
3187                        .child(
3188                            Label::new(user_rules_text)
3189                                .size(LabelSize::XSmall)
3190                                .color(Color::Muted)
3191                                .truncate()
3192                                .buffer_font(cx)
3193                                .ml_1p5()
3194                                .mr_0p5(),
3195                        )
3196                        .child(
3197                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3198                                .shape(ui::IconButtonShape::Square)
3199                                .icon_size(IconSize::XSmall)
3200                                .icon_color(Color::Ignored)
3201                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3202                                .tooltip(Tooltip::text("View User Rules"))
3203                                .on_click(move |_event, window, cx| {
3204                                    window.dispatch_action(
3205                                        Box::new(OpenRulesLibrary {
3206                                            prompt_to_select: first_user_rules_id,
3207                                        }),
3208                                        cx,
3209                                    )
3210                                }),
3211                        ),
3212                )
3213            })
3214            .when_some(rules_file_text, |parent, rules_file_text| {
3215                parent.child(
3216                    h_flex()
3217                        .w_full()
3218                        .child(
3219                            Icon::new(IconName::File)
3220                                .size(IconSize::XSmall)
3221                                .color(Color::Disabled),
3222                        )
3223                        .child(
3224                            Label::new(rules_file_text)
3225                                .size(LabelSize::XSmall)
3226                                .color(Color::Muted)
3227                                .buffer_font(cx)
3228                                .ml_1p5()
3229                                .mr_0p5(),
3230                        )
3231                        .child(
3232                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3233                                .shape(ui::IconButtonShape::Square)
3234                                .icon_size(IconSize::XSmall)
3235                                .icon_color(Color::Ignored)
3236                                .on_click(cx.listener(Self::handle_open_rules))
3237                                .tooltip(Tooltip::text("View Rules")),
3238                        ),
3239                )
3240            })
3241            .into_any()
3242    }
3243
3244    fn handle_allow_tool(
3245        &mut self,
3246        tool_use_id: LanguageModelToolUseId,
3247        _: &ClickEvent,
3248        window: &mut Window,
3249        cx: &mut Context<Self>,
3250    ) {
3251        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3252            .thread
3253            .read(cx)
3254            .pending_tool(&tool_use_id)
3255            .map(|tool_use| tool_use.status.clone())
3256        {
3257            self.thread.update(cx, |thread, cx| {
3258                if let Some(configured) = thread.get_or_init_configured_model(cx) {
3259                    thread.run_tool(
3260                        c.tool_use_id.clone(),
3261                        c.ui_text.clone(),
3262                        c.input.clone(),
3263                        c.request.clone(),
3264                        c.tool.clone(),
3265                        configured.model,
3266                        Some(window.window_handle()),
3267                        cx,
3268                    );
3269                }
3270            });
3271        }
3272    }
3273
3274    fn handle_deny_tool(
3275        &mut self,
3276        tool_use_id: LanguageModelToolUseId,
3277        tool_name: Arc<str>,
3278        _: &ClickEvent,
3279        window: &mut Window,
3280        cx: &mut Context<Self>,
3281    ) {
3282        let window_handle = window.window_handle();
3283        self.thread.update(cx, |thread, cx| {
3284            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3285        });
3286    }
3287
3288    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3289        let project_context = self.thread.read(cx).project_context();
3290        let project_context = project_context.borrow();
3291        let Some(project_context) = project_context.as_ref() else {
3292            return;
3293        };
3294
3295        let project_entry_ids = project_context
3296            .worktrees
3297            .iter()
3298            .flat_map(|worktree| worktree.rules_file.as_ref())
3299            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3300            .collect::<Vec<_>>();
3301
3302        self.workspace
3303            .update(cx, move |workspace, cx| {
3304                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3305                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3306                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3307                let project = workspace.project().read(cx);
3308                let project_paths = project_entry_ids
3309                    .into_iter()
3310                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3311                    .collect::<Vec<_>>();
3312                for project_path in project_paths {
3313                    workspace
3314                        .open_path(project_path, None, true, window, cx)
3315                        .detach_and_log_err(cx);
3316                }
3317            })
3318            .ok();
3319    }
3320
3321    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3322        for window in self.notifications.drain(..) {
3323            window
3324                .update(cx, |_, window, _| {
3325                    window.remove_window();
3326                })
3327                .ok();
3328
3329            self.notification_subscriptions.remove(&window);
3330        }
3331    }
3332
3333    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3334        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3335            return None;
3336        }
3337
3338        Some(
3339            div()
3340                .occlude()
3341                .id("active-thread-scrollbar")
3342                .on_mouse_move(cx.listener(|_, _, _, cx| {
3343                    cx.notify();
3344                    cx.stop_propagation()
3345                }))
3346                .on_hover(|_, _, cx| {
3347                    cx.stop_propagation();
3348                })
3349                .on_any_mouse_down(|_, _, cx| {
3350                    cx.stop_propagation();
3351                })
3352                .on_mouse_up(
3353                    MouseButton::Left,
3354                    cx.listener(|_, _, _, cx| {
3355                        cx.stop_propagation();
3356                    }),
3357                )
3358                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3359                    cx.notify();
3360                }))
3361                .h_full()
3362                .absolute()
3363                .right_1()
3364                .top_1()
3365                .bottom_0()
3366                .w(px(12.))
3367                .cursor_default()
3368                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3369        )
3370    }
3371
3372    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3373        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3374        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3375            cx.background_executor()
3376                .timer(SCROLLBAR_SHOW_INTERVAL)
3377                .await;
3378            thread
3379                .update(cx, |thread, cx| {
3380                    if !thread.scrollbar_state.is_dragging() {
3381                        thread.show_scrollbar = false;
3382                        cx.notify();
3383                    }
3384                })
3385                .log_err();
3386        }))
3387    }
3388}
3389
3390pub enum ActiveThreadEvent {
3391    EditingMessageTokenCountChanged,
3392}
3393
3394impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3395
3396impl Render for ActiveThread {
3397    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3398        v_flex()
3399            .size_full()
3400            .relative()
3401            .on_mouse_move(cx.listener(|this, _, _, cx| {
3402                this.show_scrollbar = true;
3403                this.hide_scrollbar_later(cx);
3404                cx.notify();
3405            }))
3406            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3407                this.show_scrollbar = true;
3408                this.hide_scrollbar_later(cx);
3409                cx.notify();
3410            }))
3411            .on_mouse_up(
3412                MouseButton::Left,
3413                cx.listener(|this, _, _, cx| {
3414                    this.hide_scrollbar_later(cx);
3415                }),
3416            )
3417            .child(list(self.list_state.clone()).flex_grow())
3418            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3419                this.child(scrollbar)
3420            })
3421    }
3422}
3423
3424pub(crate) fn open_active_thread_as_markdown(
3425    thread: Entity<Thread>,
3426    workspace: Entity<Workspace>,
3427    window: &mut Window,
3428    cx: &mut App,
3429) -> Task<anyhow::Result<()>> {
3430    let markdown_language_task = workspace
3431        .read(cx)
3432        .app_state()
3433        .languages
3434        .language_for_name("Markdown");
3435
3436    window.spawn(cx, async move |cx| {
3437        let markdown_language = markdown_language_task.await?;
3438
3439        workspace.update_in(cx, |workspace, window, cx| {
3440            let thread = thread.read(cx);
3441            let markdown = thread.to_markdown(cx)?;
3442            let thread_summary = thread
3443                .summary()
3444                .map(|summary| summary.to_string())
3445                .unwrap_or_else(|| "Thread".to_string());
3446
3447            let project = workspace.project().clone();
3448
3449            if !project.read(cx).is_local() {
3450                anyhow::bail!("failed to open active thread as markdown in remote project");
3451            }
3452
3453            let buffer = project.update(cx, |project, cx| {
3454                project.create_local_buffer(&markdown, Some(markdown_language), cx)
3455            });
3456            let buffer =
3457                cx.new(|cx| MultiBuffer::singleton(buffer, cx).with_title(thread_summary.clone()));
3458
3459            workspace.add_item_to_active_pane(
3460                Box::new(cx.new(|cx| {
3461                    let mut editor =
3462                        Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
3463                    editor.set_breadcrumb_header(thread_summary);
3464                    editor
3465                })),
3466                None,
3467                true,
3468                window,
3469                cx,
3470            );
3471
3472            anyhow::Ok(())
3473        })??;
3474        anyhow::Ok(())
3475    })
3476}
3477
3478pub(crate) fn open_context(
3479    context: &AgentContextHandle,
3480    workspace: Entity<Workspace>,
3481    window: &mut Window,
3482    cx: &mut App,
3483) {
3484    match context {
3485        AgentContextHandle::File(file_context) => {
3486            if let Some(project_path) = file_context.project_path(cx) {
3487                workspace.update(cx, |workspace, cx| {
3488                    workspace
3489                        .open_path(project_path, None, true, window, cx)
3490                        .detach_and_log_err(cx);
3491                });
3492            }
3493        }
3494
3495        AgentContextHandle::Directory(directory_context) => {
3496            let entry_id = directory_context.entry_id;
3497            workspace.update(cx, |workspace, cx| {
3498                workspace.project().update(cx, |_project, cx| {
3499                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3500                })
3501            })
3502        }
3503
3504        AgentContextHandle::Symbol(symbol_context) => {
3505            let buffer = symbol_context.buffer.read(cx);
3506            if let Some(project_path) = buffer.project_path(cx) {
3507                let snapshot = buffer.snapshot();
3508                let target_position = symbol_context.range.start.to_point(&snapshot);
3509                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3510                    .detach();
3511            }
3512        }
3513
3514        AgentContextHandle::Selection(selection_context) => {
3515            let buffer = selection_context.buffer.read(cx);
3516            if let Some(project_path) = buffer.project_path(cx) {
3517                let snapshot = buffer.snapshot();
3518                let target_position = selection_context.range.start.to_point(&snapshot);
3519
3520                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3521                    .detach();
3522            }
3523        }
3524
3525        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3526            cx.open_url(&fetched_url_context.url);
3527        }
3528
3529        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3530            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3531                panel.update(cx, |panel, cx| {
3532                    panel.open_thread(thread_context.thread.clone(), window, cx);
3533                });
3534            }
3535        }),
3536
3537        AgentContextHandle::TextThread(text_thread_context) => {
3538            workspace.update(cx, |workspace, cx| {
3539                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3540                    panel.update(cx, |panel, cx| {
3541                        panel.open_prompt_editor(text_thread_context.context.clone(), window, cx)
3542                    });
3543                }
3544            })
3545        }
3546
3547        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3548            Box::new(OpenRulesLibrary {
3549                prompt_to_select: Some(rules_context.prompt_id.0),
3550            }),
3551            cx,
3552        ),
3553
3554        AgentContextHandle::Image(_) => {}
3555    }
3556}
3557
3558fn open_editor_at_position(
3559    project_path: project::ProjectPath,
3560    target_position: Point,
3561    workspace: &Entity<Workspace>,
3562    window: &mut Window,
3563    cx: &mut App,
3564) -> Task<()> {
3565    let open_task = workspace.update(cx, |workspace, cx| {
3566        workspace.open_path(project_path, None, true, window, cx)
3567    });
3568    window.spawn(cx, async move |cx| {
3569        if let Some(active_editor) = open_task
3570            .await
3571            .log_err()
3572            .and_then(|item| item.downcast::<Editor>())
3573        {
3574            active_editor
3575                .downgrade()
3576                .update_in(cx, |editor, window, cx| {
3577                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3578                })
3579                .log_err();
3580        }
3581    })
3582}
3583
3584#[cfg(test)]
3585mod tests {
3586    use assistant_tool::{ToolRegistry, ToolWorkingSet};
3587    use editor::EditorSettings;
3588    use fs::FakeFs;
3589    use gpui::{TestAppContext, VisualTestContext};
3590    use language_model::{LanguageModel, fake_provider::FakeLanguageModel};
3591    use project::Project;
3592    use prompt_store::PromptBuilder;
3593    use serde_json::json;
3594    use settings::SettingsStore;
3595    use util::path;
3596
3597    use crate::{ContextLoadResult, thread_store};
3598
3599    use super::*;
3600
3601    #[gpui::test]
3602    async fn test_current_completion_cancelled_when_message_edited(cx: &mut TestAppContext) {
3603        init_test_settings(cx);
3604
3605        let project = create_test_project(
3606            cx,
3607            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
3608        )
3609        .await;
3610
3611        let (cx, active_thread, thread, model) = setup_test_environment(cx, project.clone()).await;
3612
3613        // Insert user message without any context (empty context vector)
3614        let message = thread.update(cx, |thread, cx| {
3615            let message_id = thread.insert_user_message(
3616                "What is the best way to learn Rust?",
3617                ContextLoadResult::default(),
3618                None,
3619                vec![],
3620                cx,
3621            );
3622            thread
3623                .message(message_id)
3624                .expect("message should exist")
3625                .clone()
3626        });
3627
3628        // Stream response to user message
3629        thread.update(cx, |thread, cx| {
3630            let request = thread.to_completion_request(model.clone(), cx);
3631            thread.stream_completion(request, model, cx.active_window(), cx)
3632        });
3633        let generating = thread.update(cx, |thread, _cx| thread.is_generating());
3634        assert!(generating, "There should be one pending completion");
3635
3636        // Edit the previous message
3637        active_thread.update_in(cx, |active_thread, window, cx| {
3638            active_thread.start_editing_message(message.id, &message.segments, window, cx);
3639        });
3640
3641        // Check that the stream was cancelled
3642        let generating = thread.update(cx, |thread, _cx| thread.is_generating());
3643        assert!(!generating, "The completion should have been cancelled");
3644    }
3645
3646    fn init_test_settings(cx: &mut TestAppContext) {
3647        cx.update(|cx| {
3648            let settings_store = SettingsStore::test(cx);
3649            cx.set_global(settings_store);
3650            language::init(cx);
3651            Project::init_settings(cx);
3652            AssistantSettings::register(cx);
3653            prompt_store::init(cx);
3654            thread_store::init(cx);
3655            workspace::init_settings(cx);
3656            language_model::init_settings(cx);
3657            ThemeSettings::register(cx);
3658            EditorSettings::register(cx);
3659            ToolRegistry::default_global(cx);
3660        });
3661    }
3662
3663    // Helper to create a test project with test files
3664    async fn create_test_project(
3665        cx: &mut TestAppContext,
3666        files: serde_json::Value,
3667    ) -> Entity<Project> {
3668        let fs = FakeFs::new(cx.executor());
3669        fs.insert_tree(path!("/test"), files).await;
3670        Project::test(fs, [path!("/test").as_ref()], cx).await
3671    }
3672
3673    async fn setup_test_environment(
3674        cx: &mut TestAppContext,
3675        project: Entity<Project>,
3676    ) -> (
3677        &mut VisualTestContext,
3678        Entity<ActiveThread>,
3679        Entity<Thread>,
3680        Arc<dyn LanguageModel>,
3681    ) {
3682        let (workspace, cx) =
3683            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
3684
3685        let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3686        let thread_store = cx
3687            .update(|_, cx| {
3688                ThreadStore::load(
3689                    project.clone(),
3690                    cx.new(|_| ToolWorkingSet::default()),
3691                    None,
3692                    prompt_builder.clone(),
3693                    cx,
3694                )
3695            })
3696            .await
3697            .unwrap();
3698        let text_thread_store = cx
3699            .update(|_, cx| {
3700                TextThreadStore::new(project.clone(), prompt_builder, Default::default(), cx)
3701            })
3702            .await
3703            .unwrap();
3704
3705        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
3706        let context_store = cx.new(|_cx| ContextStore::new(project.downgrade(), None));
3707
3708        let model = FakeLanguageModel::default();
3709        let model: Arc<dyn LanguageModel> = Arc::new(model);
3710
3711        let language_registry = LanguageRegistry::new(cx.executor());
3712        let language_registry = Arc::new(language_registry);
3713
3714        let active_thread = cx.update(|window, cx| {
3715            cx.new(|cx| {
3716                ActiveThread::new(
3717                    thread.clone(),
3718                    thread_store.clone(),
3719                    text_thread_store.clone(),
3720                    context_store.clone(),
3721                    language_registry.clone(),
3722                    workspace.downgrade(),
3723                    window,
3724                    cx,
3725                )
3726            })
3727        });
3728
3729        (cx, active_thread, thread, model)
3730    }
3731}