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