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::message_editor::insert_message_creases;
   7use crate::thread::{
   8    LastRestoreCheckpoint, MessageCrease, MessageId, MessageSegment, Thread, ThreadError,
   9    ThreadEvent, ThreadFeedback, ThreadSummary,
  10};
  11use crate::thread_store::{RulesLoadingError, TextThreadStore, ThreadStore};
  12use crate::tool_use::{PendingToolUseStatus, ToolUse};
  13use crate::ui::{
  14    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
  15};
  16use anyhow::Context as _;
  17use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
  18use assistant_tool::ToolUseStatus;
  19use collections::{HashMap, HashSet};
  20use editor::actions::{MoveUp, Paste};
  21use editor::scroll::Autoscroll;
  22use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer};
  23use gpui::{
  24    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardEntry,
  25    ClipboardItem, DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla,
  26    ListAlignment, ListState, MouseButton, PlatformDisplay, ScrollHandle, Stateful,
  27    StyleRefinement, Subscription, Task, TextStyle, TextStyleRefinement, Transformation,
  28    UnderlineStyle, WeakEntity, WindowHandle, linear_color_stop, linear_gradient, list, percentage,
  29    pulsating_between,
  30};
  31use language::{Buffer, Language, LanguageRegistry};
  32use language_model::{
  33    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, Role, StopReason,
  34};
  35use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  36use markdown::{
  37    HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown, PathWithRange,
  38};
  39use project::{ProjectEntryId, ProjectItem as _};
  40use rope::Point;
  41use settings::{Settings as _, SettingsStore, update_settings_file};
  42use std::ffi::OsStr;
  43use std::path::Path;
  44use std::rc::Rc;
  45use std::sync::Arc;
  46use std::time::Duration;
  47use text::ToPoint;
  48use theme::ThemeSettings;
  49use ui::{
  50    Disclosure, IconButton, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize,
  51    Tooltip, prelude::*,
  52};
  53use util::ResultExt as _;
  54use util::markdown::MarkdownCodeBlock;
  55use workspace::{CollaboratorId, Workspace};
  56use zed_actions::assistant::OpenRulesLibrary;
  57
  58pub struct ActiveThread {
  59    context_store: Entity<ContextStore>,
  60    language_registry: Arc<LanguageRegistry>,
  61    thread_store: Entity<ThreadStore>,
  62    text_thread_store: Entity<TextThreadStore>,
  63    thread: Entity<Thread>,
  64    workspace: WeakEntity<Workspace>,
  65    save_thread_task: Option<Task<()>>,
  66    messages: Vec<MessageId>,
  67    list_state: ListState,
  68    scrollbar_state: ScrollbarState,
  69    show_scrollbar: bool,
  70    hide_scrollbar_task: Option<Task<()>>,
  71    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  72    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  73    editing_message: Option<(MessageId, EditingMessageState)>,
  74    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  75    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  76    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  77    last_error: Option<ThreadError>,
  78    notifications: Vec<WindowHandle<AgentNotification>>,
  79    copied_code_block_ids: HashSet<(MessageId, usize)>,
  80    _subscriptions: Vec<Subscription>,
  81    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  82    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  83    _load_edited_message_context_task: Option<Task<()>>,
  84}
  85
  86struct RenderedMessage {
  87    language_registry: Arc<LanguageRegistry>,
  88    segments: Vec<RenderedMessageSegment>,
  89}
  90
  91#[derive(Clone)]
  92struct RenderedToolUse {
  93    label: Entity<Markdown>,
  94    input: Entity<Markdown>,
  95    output: Entity<Markdown>,
  96}
  97
  98impl RenderedMessage {
  99    fn from_segments(
 100        segments: &[MessageSegment],
 101        language_registry: Arc<LanguageRegistry>,
 102        cx: &mut App,
 103    ) -> Self {
 104        let mut this = Self {
 105            language_registry,
 106            segments: Vec::with_capacity(segments.len()),
 107        };
 108        for segment in segments {
 109            this.push_segment(segment, cx);
 110        }
 111        this
 112    }
 113
 114    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 115        if let Some(RenderedMessageSegment::Thinking {
 116            content,
 117            scroll_handle,
 118        }) = self.segments.last_mut()
 119        {
 120            content.update(cx, |markdown, cx| {
 121                markdown.append(text, cx);
 122            });
 123            scroll_handle.scroll_to_bottom();
 124        } else {
 125            self.segments.push(RenderedMessageSegment::Thinking {
 126                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 127                scroll_handle: ScrollHandle::default(),
 128            });
 129        }
 130    }
 131
 132    fn append_text(&mut self, text: &String, cx: &mut App) {
 133        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 134            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 135        } else {
 136            self.segments
 137                .push(RenderedMessageSegment::Text(parse_markdown(
 138                    SharedString::from(text),
 139                    self.language_registry.clone(),
 140                    cx,
 141                )));
 142        }
 143    }
 144
 145    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 146        match segment {
 147            MessageSegment::Thinking { text, .. } => {
 148                self.segments.push(RenderedMessageSegment::Thinking {
 149                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 150                    scroll_handle: ScrollHandle::default(),
 151                })
 152            }
 153            MessageSegment::Text(text) => {
 154                self.segments
 155                    .push(RenderedMessageSegment::Text(parse_markdown(
 156                        text.into(),
 157                        self.language_registry.clone(),
 158                        cx,
 159                    )))
 160            }
 161            MessageSegment::RedactedThinking(_) => {}
 162        };
 163    }
 164}
 165
 166enum RenderedMessageSegment {
 167    Thinking {
 168        content: Entity<Markdown>,
 169        scroll_handle: ScrollHandle,
 170    },
 171    Text(Entity<Markdown>),
 172}
 173
 174fn parse_markdown(
 175    text: SharedString,
 176    language_registry: Arc<LanguageRegistry>,
 177    cx: &mut App,
 178) -> Entity<Markdown> {
 179    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 180}
 181
 182pub(crate) fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 183    let theme_settings = ThemeSettings::get_global(cx);
 184    let colors = cx.theme().colors();
 185    let ui_font_size = TextSize::Default.rems(cx);
 186    let buffer_font_size = TextSize::Small.rems(cx);
 187    let mut text_style = window.text_style();
 188    let line_height = buffer_font_size * 1.75;
 189
 190    text_style.refine(&TextStyleRefinement {
 191        font_family: Some(theme_settings.ui_font.family.clone()),
 192        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 193        font_features: Some(theme_settings.ui_font.features.clone()),
 194        font_size: Some(ui_font_size.into()),
 195        line_height: Some(line_height.into()),
 196        color: Some(cx.theme().colors().text),
 197        ..Default::default()
 198    });
 199
 200    MarkdownStyle {
 201        base_text_style: text_style.clone(),
 202        syntax: cx.theme().syntax().clone(),
 203        selection_background_color: cx.theme().players().local().selection,
 204        code_block_overflow_x_scroll: true,
 205        table_overflow_x_scroll: true,
 206        heading_level_styles: Some(HeadingLevelStyles {
 207            h1: Some(TextStyleRefinement {
 208                font_size: Some(rems(1.15).into()),
 209                ..Default::default()
 210            }),
 211            h2: Some(TextStyleRefinement {
 212                font_size: Some(rems(1.1).into()),
 213                ..Default::default()
 214            }),
 215            h3: Some(TextStyleRefinement {
 216                font_size: Some(rems(1.05).into()),
 217                ..Default::default()
 218            }),
 219            h4: Some(TextStyleRefinement {
 220                font_size: Some(rems(1.).into()),
 221                ..Default::default()
 222            }),
 223            h5: Some(TextStyleRefinement {
 224                font_size: Some(rems(0.95).into()),
 225                ..Default::default()
 226            }),
 227            h6: Some(TextStyleRefinement {
 228                font_size: Some(rems(0.875).into()),
 229                ..Default::default()
 230            }),
 231        }),
 232        code_block: StyleRefinement {
 233            padding: EdgesRefinement {
 234                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 235                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 236                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 237                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 238            },
 239            background: Some(colors.editor_background.into()),
 240            text: Some(TextStyleRefinement {
 241                font_family: Some(theme_settings.buffer_font.family.clone()),
 242                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 243                font_features: Some(theme_settings.buffer_font.features.clone()),
 244                font_size: Some(buffer_font_size.into()),
 245                ..Default::default()
 246            }),
 247            ..Default::default()
 248        },
 249        inline_code: TextStyleRefinement {
 250            font_family: Some(theme_settings.buffer_font.family.clone()),
 251            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 252            font_features: Some(theme_settings.buffer_font.features.clone()),
 253            font_size: Some(buffer_font_size.into()),
 254            background_color: Some(colors.editor_foreground.opacity(0.08)),
 255            ..Default::default()
 256        },
 257        link: TextStyleRefinement {
 258            background_color: Some(colors.editor_foreground.opacity(0.025)),
 259            underline: Some(UnderlineStyle {
 260                color: Some(colors.text_accent.opacity(0.5)),
 261                thickness: px(1.),
 262                ..Default::default()
 263            }),
 264            ..Default::default()
 265        },
 266        link_callback: Some(Rc::new(move |url, cx| {
 267            if MentionLink::is_valid(url) {
 268                let colors = cx.theme().colors();
 269                Some(TextStyleRefinement {
 270                    background_color: Some(colors.element_background),
 271                    ..Default::default()
 272                })
 273            } else {
 274                None
 275            }
 276        })),
 277        ..Default::default()
 278    }
 279}
 280
 281fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 282    let theme_settings = ThemeSettings::get_global(cx);
 283    let colors = cx.theme().colors();
 284    let ui_font_size = TextSize::Default.rems(cx);
 285    let buffer_font_size = TextSize::Small.rems(cx);
 286    let mut text_style = window.text_style();
 287
 288    text_style.refine(&TextStyleRefinement {
 289        font_family: Some(theme_settings.ui_font.family.clone()),
 290        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 291        font_features: Some(theme_settings.ui_font.features.clone()),
 292        font_size: Some(ui_font_size.into()),
 293        color: Some(cx.theme().colors().text),
 294        ..Default::default()
 295    });
 296
 297    MarkdownStyle {
 298        base_text_style: text_style,
 299        syntax: cx.theme().syntax().clone(),
 300        selection_background_color: cx.theme().players().local().selection,
 301        code_block_overflow_x_scroll: true,
 302        code_block: StyleRefinement {
 303            margin: EdgesRefinement::default(),
 304            padding: EdgesRefinement::default(),
 305            background: Some(colors.editor_background.into()),
 306            border_color: None,
 307            border_widths: EdgesRefinement::default(),
 308            text: Some(TextStyleRefinement {
 309                font_family: Some(theme_settings.buffer_font.family.clone()),
 310                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 311                font_features: Some(theme_settings.buffer_font.features.clone()),
 312                font_size: Some(buffer_font_size.into()),
 313                ..Default::default()
 314            }),
 315            ..Default::default()
 316        },
 317        inline_code: TextStyleRefinement {
 318            font_family: Some(theme_settings.buffer_font.family.clone()),
 319            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 320            font_features: Some(theme_settings.buffer_font.features.clone()),
 321            font_size: Some(TextSize::XSmall.rems(cx).into()),
 322            ..Default::default()
 323        },
 324        heading: StyleRefinement {
 325            text: Some(TextStyleRefinement {
 326                font_size: Some(ui_font_size.into()),
 327                ..Default::default()
 328            }),
 329            ..Default::default()
 330        },
 331        ..Default::default()
 332    }
 333}
 334
 335const CODEBLOCK_CONTAINER_GROUP: &str = "codeblock_container";
 336
 337fn render_markdown_code_block(
 338    message_id: MessageId,
 339    ix: usize,
 340    kind: &CodeBlockKind,
 341    parsed_markdown: &ParsedMarkdown,
 342    metadata: CodeBlockMetadata,
 343    active_thread: Entity<ActiveThread>,
 344    workspace: WeakEntity<Workspace>,
 345    _window: &Window,
 346    cx: &App,
 347) -> Div {
 348    let label_size = rems(0.8125);
 349
 350    let label = match kind {
 351        CodeBlockKind::Indented => None,
 352        CodeBlockKind::Fenced => Some(
 353            h_flex()
 354                .px_1()
 355                .gap_1()
 356                .child(
 357                    Icon::new(IconName::Code)
 358                        .color(Color::Muted)
 359                        .size(IconSize::XSmall),
 360                )
 361                .child(div().text_size(label_size).child("Plain Text"))
 362                .into_any_element(),
 363        ),
 364        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 365            parsed_markdown.languages_by_name.get(raw_language_name),
 366            raw_language_name.clone(),
 367            cx,
 368        )),
 369        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 370            // We tell the model to use /dev/null for the path instead of using ```language
 371            // because otherwise it consistently fails to use code citations.
 372            if path_range.path.starts_with("/dev/null") {
 373                let ext = path_range
 374                    .path
 375                    .extension()
 376                    .and_then(OsStr::to_str)
 377                    .map(|str| SharedString::new(str.to_string()))
 378                    .unwrap_or_default();
 379
 380                render_code_language(
 381                    parsed_markdown
 382                        .languages_by_path
 383                        .get(&path_range.path)
 384                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 385                    ext,
 386                    cx,
 387                )
 388            } else {
 389                let content = if let Some(parent) = path_range.path.parent() {
 390                    let file_name = file_name.to_string_lossy().to_string();
 391                    let path = parent.to_string_lossy().to_string();
 392                    let path_and_file = format!("{}/{}", path, file_name);
 393
 394                    h_flex()
 395                        .id(("code-block-header-label", ix))
 396                        .ml_1()
 397                        .gap_1()
 398                        .child(div().text_size(label_size).child(file_name))
 399                        .child(Label::new(path).color(Color::Muted).size(LabelSize::Small))
 400                        .tooltip(move |window, cx| {
 401                            Tooltip::with_meta(
 402                                "Jump to File",
 403                                None,
 404                                path_and_file.clone(),
 405                                window,
 406                                cx,
 407                            )
 408                        })
 409                        .into_any_element()
 410                } else {
 411                    div()
 412                        .ml_1()
 413                        .text_size(label_size)
 414                        .child(path_range.path.to_string_lossy().to_string())
 415                        .into_any_element()
 416                };
 417
 418                h_flex()
 419                    .id(("code-block-header-button", ix))
 420                    .w_full()
 421                    .max_w_full()
 422                    .px_1()
 423                    .gap_0p5()
 424                    .cursor_pointer()
 425                    .rounded_sm()
 426                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 427                    .child(
 428                        h_flex()
 429                            .gap_0p5()
 430                            .children(
 431                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 432                                    .map(Icon::from_path)
 433                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 434                            )
 435                            .child(content)
 436                            .child(
 437                                Icon::new(IconName::ArrowUpRight)
 438                                    .size(IconSize::XSmall)
 439                                    .color(Color::Ignored),
 440                            ),
 441                    )
 442                    .on_click({
 443                        let path_range = path_range.clone();
 444                        move |_, window, cx| {
 445                            workspace
 446                                .update(cx, |workspace, cx| {
 447                                    open_path(&path_range, window, workspace, cx)
 448                                })
 449                                .ok();
 450                        }
 451                    })
 452                    .into_any_element()
 453            }
 454        }),
 455    };
 456
 457    let codeblock_was_copied = active_thread
 458        .read(cx)
 459        .copied_code_block_ids
 460        .contains(&(message_id, ix));
 461
 462    let is_expanded = active_thread.read(cx).is_codeblock_expanded(message_id, ix);
 463
 464    let codeblock_header_bg = cx
 465        .theme()
 466        .colors()
 467        .element_background
 468        .blend(cx.theme().colors().editor_foreground.opacity(0.025));
 469
 470    let control_buttons = h_flex()
 471        .visible_on_hover(CODEBLOCK_CONTAINER_GROUP)
 472        .absolute()
 473        .top_0()
 474        .right_0()
 475        .h_full()
 476        .bg(codeblock_header_bg)
 477        .rounded_tr_md()
 478        .px_1()
 479        .gap_1()
 480        .child(
 481            IconButton::new(
 482                ("copy-markdown-code", ix),
 483                if codeblock_was_copied {
 484                    IconName::Check
 485                } else {
 486                    IconName::Copy
 487                },
 488            )
 489            .icon_color(Color::Muted)
 490            .shape(ui::IconButtonShape::Square)
 491            .tooltip(Tooltip::text("Copy Code"))
 492            .on_click({
 493                let active_thread = active_thread.clone();
 494                let parsed_markdown = parsed_markdown.clone();
 495                let code_block_range = metadata.content_range.clone();
 496                move |_event, _window, cx| {
 497                    active_thread.update(cx, |this, cx| {
 498                        this.copied_code_block_ids.insert((message_id, ix));
 499
 500                        let code = parsed_markdown.source()[code_block_range.clone()].to_string();
 501                        cx.write_to_clipboard(ClipboardItem::new_string(code));
 502
 503                        cx.spawn(async move |this, cx| {
 504                            cx.background_executor().timer(Duration::from_secs(2)).await;
 505
 506                            cx.update(|cx| {
 507                                this.update(cx, |this, cx| {
 508                                    this.copied_code_block_ids.remove(&(message_id, ix));
 509                                    cx.notify();
 510                                })
 511                            })
 512                            .ok();
 513                        })
 514                        .detach();
 515                    });
 516                }
 517            }),
 518        )
 519        .child(
 520            IconButton::new(
 521                ("expand-collapse-code", ix),
 522                if is_expanded {
 523                    IconName::ChevronUp
 524                } else {
 525                    IconName::ChevronDown
 526                },
 527            )
 528            .icon_color(Color::Muted)
 529            .shape(ui::IconButtonShape::Square)
 530            .tooltip(Tooltip::text(if is_expanded {
 531                "Collapse Code"
 532            } else {
 533                "Expand Code"
 534            }))
 535            .on_click({
 536                let active_thread = active_thread.clone();
 537                move |_event, _window, cx| {
 538                    active_thread.update(cx, |this, cx| {
 539                        this.toggle_codeblock_expanded(message_id, ix);
 540                        cx.notify();
 541                    });
 542                }
 543            }),
 544        );
 545
 546    let codeblock_header = h_flex()
 547        .relative()
 548        .p_1()
 549        .gap_1()
 550        .justify_between()
 551        .bg(codeblock_header_bg)
 552        .map(|this| {
 553            if !is_expanded {
 554                this.rounded_md()
 555            } else {
 556                this.rounded_t_md()
 557                    .border_b_1()
 558                    .border_color(cx.theme().colors().border.opacity(0.6))
 559            }
 560        })
 561        .children(label)
 562        .child(control_buttons);
 563
 564    v_flex()
 565        .group(CODEBLOCK_CONTAINER_GROUP)
 566        .my_2()
 567        .overflow_hidden()
 568        .rounded_md()
 569        .border_1()
 570        .border_color(cx.theme().colors().border.opacity(0.6))
 571        .bg(cx.theme().colors().editor_background)
 572        .child(codeblock_header)
 573        .when(!is_expanded, |this| this.h(rems_from_px(31.)))
 574}
 575
 576fn open_path(
 577    path_range: &PathWithRange,
 578    window: &mut Window,
 579    workspace: &mut Workspace,
 580    cx: &mut Context<'_, Workspace>,
 581) {
 582    let Some(project_path) = workspace
 583        .project()
 584        .read(cx)
 585        .find_project_path(&path_range.path, cx)
 586    else {
 587        return; // TODO instead of just bailing out, open that path in a buffer.
 588    };
 589
 590    let Some(target) = path_range.range.as_ref().map(|range| {
 591        Point::new(
 592            // Line number is 1-based
 593            range.start.line.saturating_sub(1),
 594            range.start.col.unwrap_or(0),
 595        )
 596    }) else {
 597        return;
 598    };
 599    let open_task = workspace.open_path(project_path, None, true, window, cx);
 600    window
 601        .spawn(cx, async move |cx| {
 602            let item = open_task.await?;
 603            if let Some(active_editor) = item.downcast::<Editor>() {
 604                active_editor
 605                    .update_in(cx, |editor, window, cx| {
 606                        editor.go_to_singleton_buffer_point(target, window, cx);
 607                    })
 608                    .ok();
 609            }
 610            anyhow::Ok(())
 611        })
 612        .detach_and_log_err(cx);
 613}
 614
 615fn render_code_language(
 616    language: Option<&Arc<Language>>,
 617    name_fallback: SharedString,
 618    cx: &App,
 619) -> AnyElement {
 620    let icon_path = language.and_then(|language| {
 621        language
 622            .config()
 623            .matcher
 624            .path_suffixes
 625            .iter()
 626            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 627            .map(Icon::from_path)
 628    });
 629
 630    let language_label = language
 631        .map(|language| language.name().into())
 632        .unwrap_or(name_fallback);
 633
 634    let label_size = rems(0.8125);
 635
 636    h_flex()
 637        .px_1()
 638        .gap_1p5()
 639        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)))
 640        .child(div().text_size(label_size).child(language_label))
 641        .into_any_element()
 642}
 643
 644fn open_markdown_link(
 645    text: SharedString,
 646    workspace: WeakEntity<Workspace>,
 647    window: &mut Window,
 648    cx: &mut App,
 649) {
 650    let Some(workspace) = workspace.upgrade() else {
 651        cx.open_url(&text);
 652        return;
 653    };
 654
 655    match MentionLink::try_parse(&text, &workspace, cx) {
 656        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 657            if entry.is_dir() {
 658                workspace.project().update(cx, |_, cx| {
 659                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 660                })
 661            } else {
 662                workspace
 663                    .open_path(path, None, true, window, cx)
 664                    .detach_and_log_err(cx);
 665            }
 666        }),
 667        Some(MentionLink::Symbol(path, symbol_name)) => {
 668            let open_task = workspace.update(cx, |workspace, cx| {
 669                workspace.open_path(path, None, true, window, cx)
 670            });
 671            window
 672                .spawn(cx, async move |cx| {
 673                    let active_editor = open_task
 674                        .await?
 675                        .downcast::<Editor>()
 676                        .context("Item is not an editor")?;
 677                    active_editor.update_in(cx, |editor, window, cx| {
 678                        let symbol_range = editor
 679                            .buffer()
 680                            .read(cx)
 681                            .snapshot(cx)
 682                            .outline(None)
 683                            .and_then(|outline| {
 684                                outline
 685                                    .find_most_similar(&symbol_name)
 686                                    .map(|(_, item)| item.range.clone())
 687                            })
 688                            .context("Could not find matching symbol")?;
 689
 690                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 691                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 692                        });
 693                        anyhow::Ok(())
 694                    })
 695                })
 696                .detach_and_log_err(cx);
 697        }
 698        Some(MentionLink::Selection(path, line_range)) => {
 699            let open_task = workspace.update(cx, |workspace, cx| {
 700                workspace.open_path(path, None, true, window, cx)
 701            });
 702            window
 703                .spawn(cx, async move |cx| {
 704                    let active_editor = open_task
 705                        .await?
 706                        .downcast::<Editor>()
 707                        .context("Item is not an editor")?;
 708                    active_editor.update_in(cx, |editor, window, cx| {
 709                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 710                            s.select_ranges([Point::new(line_range.start as u32, 0)
 711                                ..Point::new(line_range.start as u32, 0)])
 712                        });
 713                        anyhow::Ok(())
 714                    })
 715                })
 716                .detach_and_log_err(cx);
 717        }
 718        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 719            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 720                panel.update(cx, |panel, cx| {
 721                    panel
 722                        .open_thread_by_id(&thread_id, window, cx)
 723                        .detach_and_log_err(cx)
 724                });
 725            }
 726        }),
 727        Some(MentionLink::TextThread(path)) => workspace.update(cx, |workspace, cx| {
 728            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 729                panel.update(cx, |panel, cx| {
 730                    panel
 731                        .open_saved_prompt_editor(path, window, cx)
 732                        .detach_and_log_err(cx);
 733                });
 734            }
 735        }),
 736        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 737        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
 738            Box::new(OpenRulesLibrary {
 739                prompt_to_select: Some(prompt_id.0),
 740            }),
 741            cx,
 742        ),
 743        None => cx.open_url(&text),
 744    }
 745}
 746
 747struct EditingMessageState {
 748    editor: Entity<Editor>,
 749    context_strip: Entity<ContextStrip>,
 750    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 751    last_estimated_token_count: Option<usize>,
 752    _subscriptions: [Subscription; 2],
 753    _update_token_count_task: Option<Task<()>>,
 754}
 755
 756impl ActiveThread {
 757    pub fn new(
 758        thread: Entity<Thread>,
 759        thread_store: Entity<ThreadStore>,
 760        text_thread_store: Entity<TextThreadStore>,
 761        context_store: Entity<ContextStore>,
 762        language_registry: Arc<LanguageRegistry>,
 763        workspace: WeakEntity<Workspace>,
 764        window: &mut Window,
 765        cx: &mut Context<Self>,
 766    ) -> Self {
 767        let subscriptions = vec![
 768            cx.observe(&thread, |_, _, cx| cx.notify()),
 769            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 770            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 771            cx.observe_global::<SettingsStore>(|_, cx| cx.notify()),
 772        ];
 773
 774        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 775            let this = cx.entity().downgrade();
 776            move |ix, window: &mut Window, cx: &mut App| {
 777                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 778                    .unwrap()
 779            }
 780        });
 781        let mut this = Self {
 782            language_registry,
 783            thread_store,
 784            text_thread_store,
 785            context_store,
 786            thread: thread.clone(),
 787            workspace,
 788            save_thread_task: None,
 789            messages: Vec::new(),
 790            rendered_messages_by_id: HashMap::default(),
 791            rendered_tool_uses: HashMap::default(),
 792            expanded_tool_uses: HashMap::default(),
 793            expanded_thinking_segments: HashMap::default(),
 794            expanded_code_blocks: HashMap::default(),
 795            list_state: list_state.clone(),
 796            scrollbar_state: ScrollbarState::new(list_state),
 797            show_scrollbar: false,
 798            hide_scrollbar_task: None,
 799            editing_message: None,
 800            last_error: None,
 801            copied_code_block_ids: HashSet::default(),
 802            notifications: Vec::new(),
 803            _subscriptions: subscriptions,
 804            notification_subscriptions: HashMap::default(),
 805            open_feedback_editors: HashMap::default(),
 806            _load_edited_message_context_task: None,
 807        };
 808
 809        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 810            this.push_message(&message.id, &message.segments, window, cx);
 811
 812            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 813                this.render_tool_use_markdown(
 814                    tool_use.id.clone(),
 815                    tool_use.ui_text.clone(),
 816                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 817                    tool_use.status.text(),
 818                    cx,
 819                );
 820            }
 821        }
 822
 823        this
 824    }
 825
 826    pub fn thread(&self) -> &Entity<Thread> {
 827        &self.thread
 828    }
 829
 830    pub fn is_empty(&self) -> bool {
 831        self.messages.is_empty()
 832    }
 833
 834    pub fn summary<'a>(&'a self, cx: &'a App) -> &'a ThreadSummary {
 835        self.thread.read(cx).summary()
 836    }
 837
 838    pub fn regenerate_summary(&self, cx: &mut App) {
 839        self.thread.update(cx, |thread, cx| thread.summarize(cx))
 840    }
 841
 842    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 843        self.last_error.take();
 844        self.thread.update(cx, |thread, cx| {
 845            thread.cancel_last_completion(Some(window.window_handle()), cx)
 846        })
 847    }
 848
 849    pub fn last_error(&self) -> Option<ThreadError> {
 850        self.last_error.clone()
 851    }
 852
 853    pub fn clear_last_error(&mut self) {
 854        self.last_error.take();
 855    }
 856
 857    /// Returns the editing message id and the estimated token count in the content
 858    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
 859        self.editing_message
 860            .as_ref()
 861            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 862    }
 863
 864    pub fn context_store(&self) -> &Entity<ContextStore> {
 865        &self.context_store
 866    }
 867
 868    pub fn thread_store(&self) -> &Entity<ThreadStore> {
 869        &self.thread_store
 870    }
 871
 872    pub fn text_thread_store(&self) -> &Entity<TextThreadStore> {
 873        &self.text_thread_store
 874    }
 875
 876    fn push_message(
 877        &mut self,
 878        id: &MessageId,
 879        segments: &[MessageSegment],
 880        _window: &mut Window,
 881        cx: &mut Context<Self>,
 882    ) {
 883        let old_len = self.messages.len();
 884        self.messages.push(*id);
 885        self.list_state.splice(old_len..old_len, 1);
 886
 887        let rendered_message =
 888            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 889        self.rendered_messages_by_id.insert(*id, rendered_message);
 890    }
 891
 892    fn edited_message(
 893        &mut self,
 894        id: &MessageId,
 895        segments: &[MessageSegment],
 896        _window: &mut Window,
 897        cx: &mut Context<Self>,
 898    ) {
 899        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 900            return;
 901        };
 902        self.list_state.splice(index..index + 1, 1);
 903        let rendered_message =
 904            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 905        self.rendered_messages_by_id.insert(*id, rendered_message);
 906    }
 907
 908    fn deleted_message(&mut self, id: &MessageId) {
 909        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 910            return;
 911        };
 912        self.messages.remove(index);
 913        self.list_state.splice(index..index + 1, 0);
 914        self.rendered_messages_by_id.remove(id);
 915    }
 916
 917    fn render_tool_use_markdown(
 918        &mut self,
 919        tool_use_id: LanguageModelToolUseId,
 920        tool_label: impl Into<SharedString>,
 921        tool_input: &str,
 922        tool_output: SharedString,
 923        cx: &mut Context<Self>,
 924    ) {
 925        let rendered = self
 926            .rendered_tool_uses
 927            .entry(tool_use_id.clone())
 928            .or_insert_with(|| RenderedToolUse {
 929                label: cx.new(|cx| {
 930                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 931                }),
 932                input: cx.new(|cx| {
 933                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 934                }),
 935                output: cx.new(|cx| {
 936                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 937                }),
 938            });
 939
 940        rendered.label.update(cx, |this, cx| {
 941            this.replace(tool_label, cx);
 942        });
 943        rendered.input.update(cx, |this, cx| {
 944            this.replace(
 945                MarkdownCodeBlock {
 946                    tag: "json",
 947                    text: tool_input,
 948                }
 949                .to_string(),
 950                cx,
 951            );
 952        });
 953        rendered.output.update(cx, |this, cx| {
 954            this.replace(tool_output, cx);
 955        });
 956    }
 957
 958    fn handle_thread_event(
 959        &mut self,
 960        _thread: &Entity<Thread>,
 961        event: &ThreadEvent,
 962        window: &mut Window,
 963        cx: &mut Context<Self>,
 964    ) {
 965        match event {
 966            ThreadEvent::CancelEditing => {
 967                if self.editing_message.is_some() {
 968                    self.cancel_editing_message(&menu::Cancel, window, cx);
 969                }
 970            }
 971            ThreadEvent::ShowError(error) => {
 972                self.last_error = Some(error.clone());
 973            }
 974            ThreadEvent::NewRequest => {
 975                cx.notify();
 976            }
 977            ThreadEvent::CompletionCanceled => {
 978                self.thread.update(cx, |thread, cx| {
 979                    thread.project().update(cx, |project, cx| {
 980                        project.set_agent_location(None, cx);
 981                    })
 982                });
 983                self.workspace
 984                    .update(cx, |workspace, cx| {
 985                        if workspace.is_being_followed(CollaboratorId::Agent) {
 986                            workspace.unfollow(CollaboratorId::Agent, window, cx);
 987                        }
 988                    })
 989                    .ok();
 990                cx.notify();
 991            }
 992            ThreadEvent::StreamedCompletion
 993            | ThreadEvent::SummaryGenerated
 994            | ThreadEvent::SummaryChanged => {
 995                self.save_thread(cx);
 996            }
 997            ThreadEvent::Stopped(reason) => match reason {
 998                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 999                    let thread = self.thread.read(cx);
1000                    self.show_notification(
1001                        if thread.used_tools_since_last_user_message() {
1002                            "Finished running tools"
1003                        } else {
1004                            "New message"
1005                        },
1006                        IconName::ZedAssistant,
1007                        window,
1008                        cx,
1009                    );
1010                }
1011                _ => {}
1012            },
1013            ThreadEvent::ToolConfirmationNeeded => {
1014                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
1015            }
1016            ThreadEvent::StreamedAssistantText(message_id, text) => {
1017                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
1018                    rendered_message.append_text(text, cx);
1019                }
1020            }
1021            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
1022                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
1023                    rendered_message.append_thinking(text, cx);
1024                }
1025            }
1026            ThreadEvent::MessageAdded(message_id) => {
1027                if let Some(message_segments) = self
1028                    .thread
1029                    .read(cx)
1030                    .message(*message_id)
1031                    .map(|message| message.segments.clone())
1032                {
1033                    self.push_message(message_id, &message_segments, window, cx);
1034                }
1035
1036                self.scroll_to_bottom(cx);
1037                self.save_thread(cx);
1038                cx.notify();
1039            }
1040            ThreadEvent::MessageEdited(message_id) => {
1041                if let Some(message_segments) = self
1042                    .thread
1043                    .read(cx)
1044                    .message(*message_id)
1045                    .map(|message| message.segments.clone())
1046                {
1047                    self.edited_message(message_id, &message_segments, window, cx);
1048                }
1049
1050                self.scroll_to_bottom(cx);
1051                self.save_thread(cx);
1052                cx.notify();
1053            }
1054            ThreadEvent::MessageDeleted(message_id) => {
1055                self.deleted_message(message_id);
1056                self.save_thread(cx);
1057                cx.notify();
1058            }
1059            ThreadEvent::UsePendingTools { tool_uses } => {
1060                for tool_use in tool_uses {
1061                    self.render_tool_use_markdown(
1062                        tool_use.id.clone(),
1063                        tool_use.ui_text.clone(),
1064                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1065                        "".into(),
1066                        cx,
1067                    );
1068                }
1069            }
1070            ThreadEvent::StreamedToolUse {
1071                tool_use_id,
1072                ui_text,
1073                input,
1074            } => {
1075                self.render_tool_use_markdown(
1076                    tool_use_id.clone(),
1077                    ui_text.clone(),
1078                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1079                    "".into(),
1080                    cx,
1081                );
1082            }
1083            ThreadEvent::ToolFinished {
1084                pending_tool_use, ..
1085            } => {
1086                if let Some(tool_use) = pending_tool_use {
1087                    self.render_tool_use_markdown(
1088                        tool_use.id.clone(),
1089                        tool_use.ui_text.clone(),
1090                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1091                        self.thread
1092                            .read(cx)
1093                            .output_for_tool(&tool_use.id)
1094                            .map(|output| output.clone().into())
1095                            .unwrap_or("".into()),
1096                        cx,
1097                    );
1098                }
1099            }
1100            ThreadEvent::CheckpointChanged => cx.notify(),
1101            ThreadEvent::ReceivedTextChunk => {}
1102            ThreadEvent::InvalidToolInput {
1103                tool_use_id,
1104                ui_text,
1105                invalid_input_json,
1106            } => {
1107                self.render_tool_use_markdown(
1108                    tool_use_id.clone(),
1109                    ui_text,
1110                    invalid_input_json,
1111                    self.thread
1112                        .read(cx)
1113                        .output_for_tool(tool_use_id)
1114                        .map(|output| output.clone().into())
1115                        .unwrap_or("".into()),
1116                    cx,
1117                );
1118            }
1119            ThreadEvent::MissingToolUse {
1120                tool_use_id,
1121                ui_text,
1122            } => {
1123                self.render_tool_use_markdown(
1124                    tool_use_id.clone(),
1125                    ui_text,
1126                    "",
1127                    self.thread
1128                        .read(cx)
1129                        .output_for_tool(tool_use_id)
1130                        .map(|output| output.clone().into())
1131                        .unwrap_or("".into()),
1132                    cx,
1133                );
1134            }
1135        }
1136    }
1137
1138    fn handle_rules_loading_error(
1139        &mut self,
1140        _thread_store: Entity<ThreadStore>,
1141        error: &RulesLoadingError,
1142        cx: &mut Context<Self>,
1143    ) {
1144        self.last_error = Some(ThreadError::Message {
1145            header: "Error loading rules file".into(),
1146            message: error.message.clone(),
1147        });
1148        cx.notify();
1149    }
1150
1151    fn show_notification(
1152        &mut self,
1153        caption: impl Into<SharedString>,
1154        icon: IconName,
1155        window: &mut Window,
1156        cx: &mut Context<ActiveThread>,
1157    ) {
1158        if window.is_window_active() || !self.notifications.is_empty() {
1159            return;
1160        }
1161
1162        let title = self.thread.read(cx).summary().unwrap_or("Agent Panel");
1163
1164        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1165            NotifyWhenAgentWaiting::PrimaryScreen => {
1166                if let Some(primary) = cx.primary_display() {
1167                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1168                }
1169            }
1170            NotifyWhenAgentWaiting::AllScreens => {
1171                let caption = caption.into();
1172                for screen in cx.displays() {
1173                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1174                }
1175            }
1176            NotifyWhenAgentWaiting::Never => {
1177                // Don't show anything
1178            }
1179        }
1180    }
1181
1182    fn pop_up(
1183        &mut self,
1184        icon: IconName,
1185        caption: SharedString,
1186        title: SharedString,
1187        window: &mut Window,
1188        screen: Rc<dyn PlatformDisplay>,
1189        cx: &mut Context<'_, ActiveThread>,
1190    ) {
1191        let options = AgentNotification::window_options(screen, cx);
1192
1193        let project_name = self.workspace.upgrade().and_then(|workspace| {
1194            workspace
1195                .read(cx)
1196                .project()
1197                .read(cx)
1198                .visible_worktrees(cx)
1199                .next()
1200                .map(|worktree| worktree.read(cx).root_name().to_string())
1201        });
1202
1203        if let Some(screen_window) = cx
1204            .open_window(options, |_, cx| {
1205                cx.new(|_| {
1206                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1207                })
1208            })
1209            .log_err()
1210        {
1211            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1212                self.notification_subscriptions
1213                    .entry(screen_window)
1214                    .or_insert_with(Vec::new)
1215                    .push(cx.subscribe_in(&pop_up, window, {
1216                        |this, _, event, window, cx| match event {
1217                            AgentNotificationEvent::Accepted => {
1218                                let handle = window.window_handle();
1219                                cx.activate(true);
1220
1221                                let workspace_handle = this.workspace.clone();
1222
1223                                // If there are multiple Zed windows, activate the correct one.
1224                                cx.defer(move |cx| {
1225                                    handle
1226                                        .update(cx, |_view, window, _cx| {
1227                                            window.activate_window();
1228
1229                                            if let Some(workspace) = workspace_handle.upgrade() {
1230                                                workspace.update(_cx, |workspace, cx| {
1231                                                    workspace.focus_panel::<AgentPanel>(window, cx);
1232                                                });
1233                                            }
1234                                        })
1235                                        .log_err();
1236                                });
1237
1238                                this.dismiss_notifications(cx);
1239                            }
1240                            AgentNotificationEvent::Dismissed => {
1241                                this.dismiss_notifications(cx);
1242                            }
1243                        }
1244                    }));
1245
1246                self.notifications.push(screen_window);
1247
1248                // If the user manually refocuses the original window, dismiss the popup.
1249                self.notification_subscriptions
1250                    .entry(screen_window)
1251                    .or_insert_with(Vec::new)
1252                    .push({
1253                        let pop_up_weak = pop_up.downgrade();
1254
1255                        cx.observe_window_activation(window, move |_, window, cx| {
1256                            if window.is_window_active() {
1257                                if let Some(pop_up) = pop_up_weak.upgrade() {
1258                                    pop_up.update(cx, |_, cx| {
1259                                        cx.emit(AgentNotificationEvent::Dismissed);
1260                                    });
1261                                }
1262                            }
1263                        })
1264                    });
1265            }
1266        }
1267    }
1268
1269    /// Spawns a task to save the active thread.
1270    ///
1271    /// Only one task to save the thread will be in flight at a time.
1272    fn save_thread(&mut self, cx: &mut Context<Self>) {
1273        let thread = self.thread.clone();
1274        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1275            let task = this
1276                .update(cx, |this, cx| {
1277                    this.thread_store
1278                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1279                })
1280                .ok();
1281
1282            if let Some(task) = task {
1283                task.await.log_err();
1284            }
1285        }));
1286    }
1287
1288    fn start_editing_message(
1289        &mut self,
1290        message_id: MessageId,
1291        message_segments: &[MessageSegment],
1292        message_creases: &[MessageCrease],
1293        window: &mut Window,
1294        cx: &mut Context<Self>,
1295    ) {
1296        // User message should always consist of a single text segment,
1297        // therefore we can skip returning early if it's not a text segment.
1298        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1299            return;
1300        };
1301
1302        let editor = crate::message_editor::create_editor(
1303            self.workspace.clone(),
1304            self.context_store.downgrade(),
1305            self.thread_store.downgrade(),
1306            self.text_thread_store.downgrade(),
1307            window,
1308            cx,
1309        );
1310        editor.update(cx, |editor, cx| {
1311            editor.set_text(message_text.clone(), window, cx);
1312            insert_message_creases(editor, message_creases, &self.context_store, window, cx);
1313            editor.focus_handle(cx).focus(window);
1314            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1315        });
1316        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1317            EditorEvent::BufferEdited => {
1318                this.update_editing_message_token_count(true, cx);
1319            }
1320            _ => {}
1321        });
1322
1323        let context_picker_menu_handle = PopoverMenuHandle::default();
1324        let context_strip = cx.new(|cx| {
1325            ContextStrip::new(
1326                self.context_store.clone(),
1327                self.workspace.clone(),
1328                Some(self.thread_store.downgrade()),
1329                Some(self.text_thread_store.downgrade()),
1330                context_picker_menu_handle.clone(),
1331                SuggestContextKind::File,
1332                window,
1333                cx,
1334            )
1335        });
1336
1337        let context_strip_subscription =
1338            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1339
1340        self.editing_message = Some((
1341            message_id,
1342            EditingMessageState {
1343                editor: editor.clone(),
1344                context_strip,
1345                context_picker_menu_handle,
1346                last_estimated_token_count: None,
1347                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1348                _update_token_count_task: None,
1349            },
1350        ));
1351        self.update_editing_message_token_count(false, cx);
1352        cx.notify();
1353    }
1354
1355    fn handle_context_strip_event(
1356        &mut self,
1357        _context_strip: &Entity<ContextStrip>,
1358        event: &ContextStripEvent,
1359        window: &mut Window,
1360        cx: &mut Context<Self>,
1361    ) {
1362        if let Some((_, state)) = self.editing_message.as_ref() {
1363            match event {
1364                ContextStripEvent::PickerDismissed
1365                | ContextStripEvent::BlurredEmpty
1366                | ContextStripEvent::BlurredDown => {
1367                    let editor_focus_handle = state.editor.focus_handle(cx);
1368                    window.focus(&editor_focus_handle);
1369                }
1370                ContextStripEvent::BlurredUp => {}
1371            }
1372        }
1373    }
1374
1375    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1376        let Some((message_id, state)) = self.editing_message.as_mut() else {
1377            return;
1378        };
1379
1380        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1381        state._update_token_count_task.take();
1382
1383        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1384            state.last_estimated_token_count.take();
1385            return;
1386        };
1387
1388        let editor = state.editor.clone();
1389        let thread = self.thread.clone();
1390        let message_id = *message_id;
1391
1392        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1393            if debounce {
1394                cx.background_executor()
1395                    .timer(Duration::from_millis(200))
1396                    .await;
1397            }
1398
1399            let token_count = if let Some(task) = cx
1400                .update(|cx| {
1401                    let Some(message) = thread.read(cx).message(message_id) else {
1402                        log::error!("Message that was being edited no longer exists");
1403                        return None;
1404                    };
1405                    let message_text = editor.read(cx).text(cx);
1406
1407                    if message_text.is_empty() && message.loaded_context.is_empty() {
1408                        return None;
1409                    }
1410
1411                    let mut request_message = LanguageModelRequestMessage {
1412                        role: language_model::Role::User,
1413                        content: Vec::new(),
1414                        cache: false,
1415                    };
1416
1417                    message
1418                        .loaded_context
1419                        .add_to_request_message(&mut request_message);
1420
1421                    if !message_text.is_empty() {
1422                        request_message
1423                            .content
1424                            .push(MessageContent::Text(message_text));
1425                    }
1426
1427                    let request = language_model::LanguageModelRequest {
1428                        thread_id: None,
1429                        prompt_id: None,
1430                        mode: None,
1431                        messages: vec![request_message],
1432                        tools: vec![],
1433                        tool_choice: None,
1434                        stop: vec![],
1435                        temperature: AssistantSettings::temperature_for_model(
1436                            &configured_model.model,
1437                            cx,
1438                        ),
1439                    };
1440
1441                    Some(configured_model.model.count_tokens(request, cx))
1442                })
1443                .ok()
1444                .flatten()
1445            {
1446                task.await.log_err()
1447            } else {
1448                Some(0)
1449            };
1450
1451            if let Some(token_count) = token_count {
1452                this.update(cx, |this, cx| {
1453                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1454                        return;
1455                    };
1456
1457                    state.last_estimated_token_count = Some(token_count);
1458                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1459                })
1460                .ok();
1461            };
1462        }));
1463    }
1464
1465    fn toggle_context_picker(
1466        &mut self,
1467        _: &crate::ToggleContextPicker,
1468        window: &mut Window,
1469        cx: &mut Context<Self>,
1470    ) {
1471        if let Some((_, state)) = self.editing_message.as_mut() {
1472            let handle = state.context_picker_menu_handle.clone();
1473            window.defer(cx, move |window, cx| {
1474                handle.toggle(window, cx);
1475            });
1476        }
1477    }
1478
1479    fn remove_all_context(
1480        &mut self,
1481        _: &crate::RemoveAllContext,
1482        _window: &mut Window,
1483        cx: &mut Context<Self>,
1484    ) {
1485        self.context_store.update(cx, |store, _cx| store.clear());
1486        cx.notify();
1487    }
1488
1489    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1490        if let Some((_, state)) = self.editing_message.as_mut() {
1491            if state.context_picker_menu_handle.is_deployed() {
1492                cx.propagate();
1493            } else {
1494                state.context_strip.focus_handle(cx).focus(window);
1495            }
1496        }
1497    }
1498
1499    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1500        let images = cx
1501            .read_from_clipboard()
1502            .map(|item| {
1503                item.into_entries()
1504                    .filter_map(|entry| {
1505                        if let ClipboardEntry::Image(image) = entry {
1506                            Some(image)
1507                        } else {
1508                            None
1509                        }
1510                    })
1511                    .collect::<Vec<_>>()
1512            })
1513            .unwrap_or_default();
1514
1515        if images.is_empty() {
1516            return;
1517        }
1518        cx.stop_propagation();
1519
1520        self.context_store.update(cx, |store, cx| {
1521            for image in images {
1522                store.add_image_instance(Arc::new(image), cx);
1523            }
1524        });
1525    }
1526
1527    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1528        self.editing_message.take();
1529        cx.notify();
1530    }
1531
1532    fn confirm_editing_message(
1533        &mut self,
1534        _: &menu::Confirm,
1535        window: &mut Window,
1536        cx: &mut Context<Self>,
1537    ) {
1538        let Some((message_id, state)) = self.editing_message.take() else {
1539            return;
1540        };
1541
1542        let Some(model) = self
1543            .thread
1544            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1545        else {
1546            return;
1547        };
1548
1549        if model.provider.must_accept_terms(cx) {
1550            cx.notify();
1551            return;
1552        }
1553
1554        let edited_text = state.editor.read(cx).text(cx);
1555
1556        let new_context = self
1557            .context_store
1558            .read(cx)
1559            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1560
1561        let project = self.thread.read(cx).project().clone();
1562        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1563
1564        let git_store = project.read(cx).git_store().clone();
1565        let checkpoint = git_store.update(cx, |git_store, cx| git_store.checkpoint(cx));
1566
1567        let load_context_task =
1568            crate::context::load_context(new_context, &project, &prompt_store, cx);
1569        self._load_edited_message_context_task =
1570            Some(cx.spawn_in(window, async move |this, cx| {
1571                let (context, checkpoint) =
1572                    futures::future::join(load_context_task, checkpoint).await;
1573                let _ = this
1574                    .update_in(cx, |this, window, cx| {
1575                        this.thread.update(cx, |thread, cx| {
1576                            thread.edit_message(
1577                                message_id,
1578                                Role::User,
1579                                vec![MessageSegment::Text(edited_text)],
1580                                Some(context.loaded_context),
1581                                checkpoint.ok(),
1582                                cx,
1583                            );
1584                            for message_id in this.messages_after(message_id) {
1585                                thread.delete_message(*message_id, cx);
1586                            }
1587                        });
1588
1589                        this.thread.update(cx, |thread, cx| {
1590                            thread.advance_prompt_id();
1591                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1592                        });
1593                        this._load_edited_message_context_task = None;
1594                        cx.notify();
1595                    })
1596                    .log_err();
1597            }));
1598    }
1599
1600    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1601        self.messages
1602            .iter()
1603            .position(|id| *id == message_id)
1604            .map(|index| &self.messages[index + 1..])
1605            .unwrap_or(&[])
1606    }
1607
1608    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1609        self.cancel_editing_message(&menu::Cancel, window, cx);
1610    }
1611
1612    fn handle_regenerate_click(
1613        &mut self,
1614        _: &ClickEvent,
1615        window: &mut Window,
1616        cx: &mut Context<Self>,
1617    ) {
1618        self.confirm_editing_message(&menu::Confirm, window, cx);
1619    }
1620
1621    fn handle_feedback_click(
1622        &mut self,
1623        message_id: MessageId,
1624        feedback: ThreadFeedback,
1625        window: &mut Window,
1626        cx: &mut Context<Self>,
1627    ) {
1628        let report = self.thread.update(cx, |thread, cx| {
1629            thread.report_message_feedback(message_id, feedback, cx)
1630        });
1631
1632        cx.spawn(async move |this, cx| {
1633            report.await?;
1634            this.update(cx, |_this, cx| cx.notify())
1635        })
1636        .detach_and_log_err(cx);
1637
1638        match feedback {
1639            ThreadFeedback::Positive => {
1640                self.open_feedback_editors.remove(&message_id);
1641            }
1642            ThreadFeedback::Negative => {
1643                self.handle_show_feedback_comments(message_id, window, cx);
1644            }
1645        }
1646    }
1647
1648    fn handle_show_feedback_comments(
1649        &mut self,
1650        message_id: MessageId,
1651        window: &mut Window,
1652        cx: &mut Context<Self>,
1653    ) {
1654        let buffer = cx.new(|cx| {
1655            let empty_string = String::new();
1656            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1657        });
1658
1659        let editor = cx.new(|cx| {
1660            let mut editor = Editor::new(
1661                editor::EditorMode::AutoHeight { max_lines: 4 },
1662                buffer,
1663                None,
1664                window,
1665                cx,
1666            );
1667            editor.set_placeholder_text(
1668                "What went wrong? Share your feedback so we can improve.",
1669                cx,
1670            );
1671            editor
1672        });
1673
1674        editor.read(cx).focus_handle(cx).focus(window);
1675        self.open_feedback_editors.insert(message_id, editor);
1676        cx.notify();
1677    }
1678
1679    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1680        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1681            return;
1682        };
1683
1684        let report_task = self.thread.update(cx, |thread, cx| {
1685            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1686        });
1687
1688        let comments = editor.read(cx).text(cx);
1689        if !comments.is_empty() {
1690            let thread_id = self.thread.read(cx).id().clone();
1691            let comments_value = String::from(comments.as_str());
1692
1693            let message_content = self
1694                .thread
1695                .read(cx)
1696                .message(message_id)
1697                .map(|msg| msg.to_string())
1698                .unwrap_or_default();
1699
1700            telemetry::event!(
1701                "Assistant Thread Feedback Comments",
1702                thread_id,
1703                message_id = message_id.0,
1704                message_content,
1705                comments = comments_value
1706            );
1707
1708            self.open_feedback_editors.remove(&message_id);
1709
1710            cx.spawn(async move |this, cx| {
1711                report_task.await?;
1712                this.update(cx, |_this, cx| cx.notify())
1713            })
1714            .detach_and_log_err(cx);
1715        }
1716    }
1717
1718    fn render_edit_message_editor(
1719        &self,
1720        state: &EditingMessageState,
1721        _window: &mut Window,
1722        cx: &Context<Self>,
1723    ) -> impl IntoElement {
1724        let settings = ThemeSettings::get_global(cx);
1725        let font_size = TextSize::Small
1726            .rems(cx)
1727            .to_pixels(settings.agent_font_size(cx));
1728        let line_height = font_size * 1.75;
1729
1730        let colors = cx.theme().colors();
1731
1732        let text_style = TextStyle {
1733            color: colors.text,
1734            font_family: settings.buffer_font.family.clone(),
1735            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1736            font_features: settings.buffer_font.features.clone(),
1737            font_size: font_size.into(),
1738            line_height: line_height.into(),
1739            ..Default::default()
1740        };
1741
1742        v_flex()
1743            .key_context("EditMessageEditor")
1744            .on_action(cx.listener(Self::toggle_context_picker))
1745            .on_action(cx.listener(Self::remove_all_context))
1746            .on_action(cx.listener(Self::move_up))
1747            .on_action(cx.listener(Self::cancel_editing_message))
1748            .on_action(cx.listener(Self::confirm_editing_message))
1749            .capture_action(cx.listener(Self::paste))
1750            .min_h_6()
1751            .w_full()
1752            .flex_grow()
1753            .gap_2()
1754            .child(state.context_strip.clone())
1755            .child(div().pt(px(-3.)).px_neg_0p5().child(EditorElement::new(
1756                &state.editor,
1757                EditorStyle {
1758                    background: colors.editor_background,
1759                    local_player: cx.theme().players().local(),
1760                    text: text_style,
1761                    syntax: cx.theme().syntax().clone(),
1762                    ..Default::default()
1763                },
1764            )))
1765    }
1766
1767    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1768        let message_id = self.messages[ix];
1769        let Some(message) = self.thread.read(cx).message(message_id) else {
1770            return Empty.into_any();
1771        };
1772        let message_creases = message.creases.clone();
1773
1774        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1775            return Empty.into_any();
1776        };
1777
1778        let workspace = self.workspace.clone();
1779        let thread = self.thread.read(cx);
1780
1781        // Get all the data we need from thread before we start using it in closures
1782        let checkpoint = thread.checkpoint_for_message(message_id);
1783        let added_context = thread
1784            .context_for_message(message_id)
1785            .map(|context| AddedContext::new_attached(context, cx))
1786            .collect::<Vec<_>>();
1787
1788        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1789        let has_tool_uses = !tool_uses.is_empty();
1790        let is_generating = thread.is_generating();
1791        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1792
1793        let is_first_message = ix == 0;
1794        let is_last_message = ix == self.messages.len() - 1;
1795
1796        let loading_dots = (is_generating_stale && is_last_message)
1797            .then(|| AnimatedLabel::new("").size(LabelSize::Small));
1798
1799        let editing_message_state = self
1800            .editing_message
1801            .as_ref()
1802            .filter(|(id, _)| *id == message_id)
1803            .map(|(_, state)| state);
1804
1805        let colors = cx.theme().colors();
1806        let editor_bg_color = colors.editor_background;
1807
1808        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::DocumentText)
1809            .icon_size(IconSize::XSmall)
1810            .icon_color(Color::Ignored)
1811            .tooltip(Tooltip::text("Open Thread as Markdown"))
1812            .on_click({
1813                let thread = self.thread.clone();
1814                let workspace = self.workspace.clone();
1815                move |_, window, cx| {
1816                    if let Some(workspace) = workspace.upgrade() {
1817                        open_active_thread_as_markdown(thread.clone(), workspace, window, cx)
1818                            .detach_and_log_err(cx);
1819                    }
1820                }
1821            });
1822
1823        // For all items that should be aligned with the LLM's response.
1824        const RESPONSE_PADDING_X: Pixels = px(19.);
1825
1826        let show_feedback = thread.is_turn_end(ix);
1827
1828        let feedback_container = h_flex()
1829            .group("feedback_container")
1830            .mt_1()
1831            .py_2()
1832            .px(RESPONSE_PADDING_X)
1833            .mr_1()
1834            .opacity(0.4)
1835            .hover(|style| style.opacity(1.))
1836            .gap_1p5()
1837            .flex_wrap()
1838            .justify_end();
1839        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1840            Some(feedback) => feedback_container
1841                .child(
1842                    div().visible_on_hover("feedback_container").child(
1843                        Label::new(match feedback {
1844                            ThreadFeedback::Positive => "Thanks for your feedback!",
1845                            ThreadFeedback::Negative => {
1846                                "We appreciate your feedback and will use it to improve."
1847                            }
1848                        })
1849                    .color(Color::Muted)
1850                    .size(LabelSize::XSmall)
1851                    .truncate())
1852                )
1853                .child(
1854                    h_flex()
1855                        .child(
1856                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1857                                .icon_size(IconSize::XSmall)
1858                                .icon_color(match feedback {
1859                                    ThreadFeedback::Positive => Color::Accent,
1860                                    ThreadFeedback::Negative => Color::Ignored,
1861                                })
1862                                .tooltip(Tooltip::text("Helpful Response"))
1863                                .on_click(cx.listener(move |this, _, window, cx| {
1864                                    this.handle_feedback_click(
1865                                        message_id,
1866                                        ThreadFeedback::Positive,
1867                                        window,
1868                                        cx,
1869                                    );
1870                                })),
1871                        )
1872                        .child(
1873                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1874                                .icon_size(IconSize::XSmall)
1875                                .icon_color(match feedback {
1876                                    ThreadFeedback::Positive => Color::Ignored,
1877                                    ThreadFeedback::Negative => Color::Accent,
1878                                })
1879                                .tooltip(Tooltip::text("Not Helpful"))
1880                                .on_click(cx.listener(move |this, _, window, cx| {
1881                                    this.handle_feedback_click(
1882                                        message_id,
1883                                        ThreadFeedback::Negative,
1884                                        window,
1885                                        cx,
1886                                    );
1887                                })),
1888                        )
1889                        .child(open_as_markdown),
1890                )
1891                .into_any_element(),
1892            None if AssistantSettings::get_global(cx).enable_feedback =>
1893                feedback_container
1894                .child(
1895                    div().visible_on_hover("feedback_container").child(
1896                        Label::new(
1897                            "Rating the thread sends all of your current conversation to the Zed team.",
1898                        )
1899                        .color(Color::Muted)
1900                    .size(LabelSize::XSmall)
1901                    .truncate())
1902                )
1903                .child(
1904                    h_flex()
1905                        .child(
1906                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1907                                .icon_size(IconSize::XSmall)
1908                                .icon_color(Color::Ignored)
1909                                .tooltip(Tooltip::text("Helpful Response"))
1910                                .on_click(cx.listener(move |this, _, window, cx| {
1911                                    this.handle_feedback_click(
1912                                        message_id,
1913                                        ThreadFeedback::Positive,
1914                                        window,
1915                                        cx,
1916                                    );
1917                                })),
1918                        )
1919                        .child(
1920                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1921                                .icon_size(IconSize::XSmall)
1922                                .icon_color(Color::Ignored)
1923                                .tooltip(Tooltip::text("Not Helpful"))
1924                                .on_click(cx.listener(move |this, _, window, cx| {
1925                                    this.handle_feedback_click(
1926                                        message_id,
1927                                        ThreadFeedback::Negative,
1928                                        window,
1929                                        cx,
1930                                    );
1931                                })),
1932                        )
1933                        .child(open_as_markdown),
1934                )
1935                .into_any_element(),
1936            None => feedback_container
1937                .child(h_flex().child(open_as_markdown))
1938                .into_any_element(),
1939        };
1940
1941        let message_is_empty = message.should_display_content();
1942        let has_content = !message_is_empty || !added_context.is_empty();
1943
1944        let message_content = has_content.then(|| {
1945            if let Some(state) = editing_message_state.as_ref() {
1946                self.render_edit_message_editor(state, window, cx)
1947                    .into_any_element()
1948            } else {
1949                v_flex()
1950                    .w_full()
1951                    .gap_1()
1952                    .when(!added_context.is_empty(), |parent| {
1953                        parent.child(h_flex().flex_wrap().gap_1().children(
1954                            added_context.into_iter().map(|added_context| {
1955                                let context = added_context.handle.clone();
1956                                ContextPill::added(added_context, false, false, None).on_click(
1957                                    Rc::new(cx.listener({
1958                                        let workspace = workspace.clone();
1959                                        move |_, _, window, cx| {
1960                                            if let Some(workspace) = workspace.upgrade() {
1961                                                open_context(&context, workspace, window, cx);
1962                                                cx.notify();
1963                                            }
1964                                        }
1965                                    })),
1966                                )
1967                            }),
1968                        ))
1969                    })
1970                    .when(!message_is_empty, |parent| {
1971                        parent.child(div().pt_0p5().min_h_6().child(self.render_message_content(
1972                            message_id,
1973                            rendered_message,
1974                            has_tool_uses,
1975                            workspace.clone(),
1976                            window,
1977                            cx,
1978                        )))
1979                    })
1980                    .into_any_element()
1981            }
1982        });
1983
1984        let styled_message = match message.role {
1985            Role::User => v_flex()
1986                .id(("message-container", ix))
1987                .pt_2()
1988                .pl_2()
1989                .pr_2p5()
1990                .pb_4()
1991                .child(
1992                    v_flex()
1993                        .id(("user-message", ix))
1994                        .bg(editor_bg_color)
1995                        .rounded_lg()
1996                        .shadow_md()
1997                        .border_1()
1998                        .border_color(colors.border)
1999                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
2000                        .cursor_pointer()
2001                        .child(
2002                            h_flex()
2003                                .p_2p5()
2004                                .gap_1()
2005                                .items_end()
2006                                .children(message_content)
2007                                .when_some(editing_message_state, |this, state| {
2008                                    let focus_handle = state.editor.focus_handle(cx).clone();
2009                                    this.w_full().justify_between().child(
2010                                        h_flex()
2011                                            .gap_0p5()
2012                                            .child(
2013                                                IconButton::new(
2014                                                    "cancel-edit-message",
2015                                                    IconName::Close,
2016                                                )
2017                                                .shape(ui::IconButtonShape::Square)
2018                                                .icon_color(Color::Error)
2019                                                .icon_size(IconSize::Small)
2020                                                .tooltip({
2021                                                    let focus_handle = focus_handle.clone();
2022                                                    move |window, cx| {
2023                                                        Tooltip::for_action_in(
2024                                                            "Cancel Edit",
2025                                                            &menu::Cancel,
2026                                                            &focus_handle,
2027                                                            window,
2028                                                            cx,
2029                                                        )
2030                                                    }
2031                                                })
2032                                                .on_click(cx.listener(Self::handle_cancel_click)),
2033                                            )
2034                                            .child(
2035                                                IconButton::new(
2036                                                    "confirm-edit-message",
2037                                                    IconName::Return,
2038                                                )
2039                                                .disabled(state.editor.read(cx).is_empty(cx))
2040                                                .shape(ui::IconButtonShape::Square)
2041                                                .icon_color(Color::Muted)
2042                                                .icon_size(IconSize::Small)
2043                                                .tooltip({
2044                                                    let focus_handle = focus_handle.clone();
2045                                                    move |window, cx| {
2046                                                        Tooltip::for_action_in(
2047                                                            "Regenerate",
2048                                                            &menu::Confirm,
2049                                                            &focus_handle,
2050                                                            window,
2051                                                            cx,
2052                                                        )
2053                                                    }
2054                                                })
2055                                                .on_click(
2056                                                    cx.listener(Self::handle_regenerate_click),
2057                                                ),
2058                                            ),
2059                                    )
2060                                }),
2061                        )
2062                        .on_click(cx.listener({
2063                            let message_segments = message.segments.clone();
2064                            move |this, _, window, cx| {
2065                                this.start_editing_message(
2066                                    message_id,
2067                                    &message_segments,
2068                                    &message_creases,
2069                                    window,
2070                                    cx,
2071                                );
2072                            }
2073                        })),
2074                ),
2075            Role::Assistant => v_flex()
2076                .id(("message-container", ix))
2077                .px(RESPONSE_PADDING_X)
2078                .gap_2()
2079                .children(message_content)
2080                .when(has_tool_uses, |parent| {
2081                    parent.children(tool_uses.into_iter().map(|tool_use| {
2082                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2083                    }))
2084                }),
2085            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2086                v_flex()
2087                    .bg(colors.editor_background)
2088                    .rounded_sm()
2089                    .child(div().p_4().children(message_content)),
2090            ),
2091        };
2092
2093        let after_editing_message = self
2094            .editing_message
2095            .as_ref()
2096            .map_or(false, |(editing_message_id, _)| {
2097                message_id > *editing_message_id
2098            });
2099
2100        let panel_background = cx.theme().colors().panel_background;
2101
2102        let backdrop = div()
2103            .id("backdrop")
2104            .stop_mouse_events_except_scroll()
2105            .absolute()
2106            .inset_0()
2107            .size_full()
2108            .bg(panel_background)
2109            .opacity(0.8)
2110            .on_click(cx.listener(Self::handle_cancel_click));
2111
2112        v_flex()
2113            .w_full()
2114            .map(|parent| {
2115                if let Some(checkpoint) = checkpoint.filter(|_| !is_generating) {
2116                    let mut is_pending = false;
2117                    let mut error = None;
2118                    if let Some(last_restore_checkpoint) =
2119                        self.thread.read(cx).last_restore_checkpoint()
2120                    {
2121                        if last_restore_checkpoint.message_id() == message_id {
2122                            match last_restore_checkpoint {
2123                                LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2124                                LastRestoreCheckpoint::Error { error: err, .. } => {
2125                                    error = Some(err.clone());
2126                                }
2127                            }
2128                        }
2129                    }
2130
2131                    let restore_checkpoint_button =
2132                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2133                            .icon(if error.is_some() {
2134                                IconName::XCircle
2135                            } else {
2136                                IconName::Undo
2137                            })
2138                            .icon_size(IconSize::XSmall)
2139                            .icon_position(IconPosition::Start)
2140                            .icon_color(if error.is_some() {
2141                                Some(Color::Error)
2142                            } else {
2143                                None
2144                            })
2145                            .label_size(LabelSize::XSmall)
2146                            .disabled(is_pending)
2147                            .on_click(cx.listener(move |this, _, _window, cx| {
2148                                this.thread.update(cx, |thread, cx| {
2149                                    thread
2150                                        .restore_checkpoint(checkpoint.clone(), cx)
2151                                        .detach_and_log_err(cx);
2152                                });
2153                            }));
2154
2155                    let restore_checkpoint_button = if is_pending {
2156                        restore_checkpoint_button
2157                            .with_animation(
2158                                ("pulsating-restore-checkpoint-button", ix),
2159                                Animation::new(Duration::from_secs(2))
2160                                    .repeat()
2161                                    .with_easing(pulsating_between(0.6, 1.)),
2162                                |label, delta| label.alpha(delta),
2163                            )
2164                            .into_any_element()
2165                    } else if let Some(error) = error {
2166                        restore_checkpoint_button
2167                            .tooltip(Tooltip::text(error.to_string()))
2168                            .into_any_element()
2169                    } else {
2170                        restore_checkpoint_button.into_any_element()
2171                    };
2172
2173                    parent.child(
2174                        h_flex()
2175                            .pt_2p5()
2176                            .px_2p5()
2177                            .w_full()
2178                            .gap_1()
2179                            .child(ui::Divider::horizontal())
2180                            .child(restore_checkpoint_button)
2181                            .child(ui::Divider::horizontal()),
2182                    )
2183                } else {
2184                    parent
2185                }
2186            })
2187            .when(is_first_message, |parent| {
2188                parent.child(self.render_rules_item(cx))
2189            })
2190            .child(styled_message)
2191            .when(is_generating && is_last_message, |this| {
2192                this.child(
2193                    h_flex()
2194                        .h_8()
2195                        .mt_2()
2196                        .mb_4()
2197                        .ml_4()
2198                        .py_1p5()
2199                        .when_some(loading_dots, |this, loading_dots| this.child(loading_dots)),
2200                )
2201            })
2202            .when(show_feedback, move |parent| {
2203                parent.child(feedback_items).when_some(
2204                    self.open_feedback_editors.get(&message_id),
2205                    move |parent, feedback_editor| {
2206                        let focus_handle = feedback_editor.focus_handle(cx);
2207                        parent.child(
2208                            v_flex()
2209                                .key_context("AgentFeedbackMessageEditor")
2210                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2211                                    this.open_feedback_editors.remove(&message_id);
2212                                    cx.notify();
2213                                }))
2214                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2215                                    this.submit_feedback_message(message_id, cx);
2216                                    cx.notify();
2217                                }))
2218                                .on_action(cx.listener(Self::confirm_editing_message))
2219                                .mb_2()
2220                                .mx_4()
2221                                .p_2()
2222                                .rounded_md()
2223                                .border_1()
2224                                .border_color(cx.theme().colors().border)
2225                                .bg(cx.theme().colors().editor_background)
2226                                .child(feedback_editor.clone())
2227                                .child(
2228                                    h_flex()
2229                                        .gap_1()
2230                                        .justify_end()
2231                                        .child(
2232                                            Button::new("dismiss-feedback-message", "Cancel")
2233                                                .label_size(LabelSize::Small)
2234                                                .key_binding(
2235                                                    KeyBinding::for_action_in(
2236                                                        &menu::Cancel,
2237                                                        &focus_handle,
2238                                                        window,
2239                                                        cx,
2240                                                    )
2241                                                    .map(|kb| kb.size(rems_from_px(10.))),
2242                                                )
2243                                                .on_click(cx.listener(
2244                                                    move |this, _, _window, cx| {
2245                                                        this.open_feedback_editors
2246                                                            .remove(&message_id);
2247                                                        cx.notify();
2248                                                    },
2249                                                )),
2250                                        )
2251                                        .child(
2252                                            Button::new(
2253                                                "submit-feedback-message",
2254                                                "Share Feedback",
2255                                            )
2256                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2257                                            .label_size(LabelSize::Small)
2258                                            .key_binding(
2259                                                KeyBinding::for_action_in(
2260                                                    &menu::Confirm,
2261                                                    &focus_handle,
2262                                                    window,
2263                                                    cx,
2264                                                )
2265                                                .map(|kb| kb.size(rems_from_px(10.))),
2266                                            )
2267                                            .on_click(
2268                                                cx.listener(move |this, _, _window, cx| {
2269                                                    this.submit_feedback_message(message_id, cx);
2270                                                    cx.notify()
2271                                                }),
2272                                            ),
2273                                        ),
2274                                ),
2275                        )
2276                    },
2277                )
2278            })
2279            .when(after_editing_message, |parent| {
2280                // Backdrop to dim out the whole thread below the editing user message
2281                parent.relative().child(backdrop)
2282            })
2283            .into_any()
2284    }
2285
2286    fn render_message_content(
2287        &self,
2288        message_id: MessageId,
2289        rendered_message: &RenderedMessage,
2290        has_tool_uses: bool,
2291        workspace: WeakEntity<Workspace>,
2292        window: &Window,
2293        cx: &Context<Self>,
2294    ) -> impl IntoElement {
2295        let is_last_message = self.messages.last() == Some(&message_id);
2296        let is_generating = self.thread.read(cx).is_generating();
2297        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2298            rendered_message
2299                .segments
2300                .iter()
2301                .enumerate()
2302                .next_back()
2303                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2304                .map(|(index, _)| index)
2305        } else {
2306            None
2307        };
2308
2309        let message_role = self
2310            .thread
2311            .read(cx)
2312            .message(message_id)
2313            .map(|m| m.role)
2314            .unwrap_or(Role::User);
2315
2316        let is_assistant_message = message_role == Role::Assistant;
2317        let is_user_message = message_role == Role::User;
2318
2319        v_flex()
2320            .text_ui(cx)
2321            .gap_2()
2322            .when(is_user_message, |this| this.text_xs())
2323            .children(
2324                rendered_message.segments.iter().enumerate().map(
2325                    |(index, segment)| match segment {
2326                        RenderedMessageSegment::Thinking {
2327                            content,
2328                            scroll_handle,
2329                        } => self
2330                            .render_message_thinking_segment(
2331                                message_id,
2332                                index,
2333                                content.clone(),
2334                                &scroll_handle,
2335                                Some(index) == pending_thinking_segment_index,
2336                                window,
2337                                cx,
2338                            )
2339                            .into_any_element(),
2340                        RenderedMessageSegment::Text(markdown) => {
2341                            let markdown_element = MarkdownElement::new(
2342                                markdown.clone(),
2343                                if is_user_message {
2344                                    let mut style = default_markdown_style(window, cx);
2345                                    let mut text_style = window.text_style();
2346                                    let theme_settings = ThemeSettings::get_global(cx);
2347
2348                                    let buffer_font = theme_settings.buffer_font.family.clone();
2349                                    let buffer_font_size = TextSize::Small.rems(cx);
2350
2351                                    text_style.refine(&TextStyleRefinement {
2352                                        font_family: Some(buffer_font),
2353                                        font_size: Some(buffer_font_size.into()),
2354                                        ..Default::default()
2355                                    });
2356
2357                                    style.base_text_style = text_style;
2358                                    style
2359                                } else {
2360                                    default_markdown_style(window, cx)
2361                                },
2362                            );
2363
2364                            let markdown_element = if is_assistant_message {
2365                                markdown_element.code_block_renderer(
2366                                    markdown::CodeBlockRenderer::Custom {
2367                                        render: Arc::new({
2368                                            let workspace = workspace.clone();
2369                                            let active_thread = cx.entity();
2370                                            move |kind,
2371                                                  parsed_markdown,
2372                                                  range,
2373                                                  metadata,
2374                                                  window,
2375                                                  cx| {
2376                                                render_markdown_code_block(
2377                                                    message_id,
2378                                                    range.start,
2379                                                    kind,
2380                                                    parsed_markdown,
2381                                                    metadata,
2382                                                    active_thread.clone(),
2383                                                    workspace.clone(),
2384                                                    window,
2385                                                    cx,
2386                                                )
2387                                            }
2388                                        }),
2389                                        transform: Some(Arc::new({
2390                                            let active_thread = cx.entity();
2391
2392                                            move |element, range, _, _, cx| {
2393                                                let is_expanded = active_thread
2394                                                    .read(cx)
2395                                                    .is_codeblock_expanded(message_id, range.start);
2396
2397                                                if is_expanded {
2398                                                    return element;
2399                                                }
2400
2401                                                element
2402                                            }
2403                                        })),
2404                                    },
2405                                )
2406                            } else {
2407                                markdown_element.code_block_renderer(
2408                                    markdown::CodeBlockRenderer::Default {
2409                                        copy_button: false,
2410                                        copy_button_on_hover: false,
2411                                        border: true,
2412                                    },
2413                                )
2414                            };
2415
2416                            div()
2417                                .child(markdown_element.on_url_click({
2418                                    let workspace = self.workspace.clone();
2419                                    move |text, window, cx| {
2420                                        open_markdown_link(text, workspace.clone(), window, cx);
2421                                    }
2422                                }))
2423                                .into_any_element()
2424                        }
2425                    },
2426                ),
2427            )
2428    }
2429
2430    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2431        cx.theme().colors().border.opacity(0.5)
2432    }
2433
2434    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2435        cx.theme()
2436            .colors()
2437            .element_background
2438            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2439    }
2440
2441    fn render_message_thinking_segment(
2442        &self,
2443        message_id: MessageId,
2444        ix: usize,
2445        markdown: Entity<Markdown>,
2446        scroll_handle: &ScrollHandle,
2447        pending: bool,
2448        window: &Window,
2449        cx: &Context<Self>,
2450    ) -> impl IntoElement {
2451        let is_open = self
2452            .expanded_thinking_segments
2453            .get(&(message_id, ix))
2454            .copied()
2455            .unwrap_or_default();
2456
2457        let editor_bg = cx.theme().colors().panel_background;
2458
2459        div().map(|this| {
2460            if pending {
2461                this.v_flex()
2462                    .mt_neg_2()
2463                    .mb_1p5()
2464                    .child(
2465                        h_flex()
2466                            .group("disclosure-header")
2467                            .justify_between()
2468                            .child(
2469                                h_flex()
2470                                    .gap_1p5()
2471                                    .child(
2472                                        Icon::new(IconName::LightBulb)
2473                                            .size(IconSize::XSmall)
2474                                            .color(Color::Muted),
2475                                    )
2476                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2477                            )
2478                            .child(
2479                                h_flex()
2480                                    .gap_1()
2481                                    .child(
2482                                        div().visible_on_hover("disclosure-header").child(
2483                                            Disclosure::new("thinking-disclosure", is_open)
2484                                                .opened_icon(IconName::ChevronUp)
2485                                                .closed_icon(IconName::ChevronDown)
2486                                                .on_click(cx.listener({
2487                                                    move |this, _event, _window, _cx| {
2488                                                        let is_open = this
2489                                                            .expanded_thinking_segments
2490                                                            .entry((message_id, ix))
2491                                                            .or_insert(false);
2492
2493                                                        *is_open = !*is_open;
2494                                                    }
2495                                                })),
2496                                        ),
2497                                    )
2498                                    .child({
2499                                        Icon::new(IconName::ArrowCircle)
2500                                            .color(Color::Accent)
2501                                            .size(IconSize::Small)
2502                                            .with_animation(
2503                                                "arrow-circle",
2504                                                Animation::new(Duration::from_secs(2)).repeat(),
2505                                                |icon, delta| {
2506                                                    icon.transform(Transformation::rotate(
2507                                                        percentage(delta),
2508                                                    ))
2509                                                },
2510                                            )
2511                                    }),
2512                            ),
2513                    )
2514                    .when(!is_open, |this| {
2515                        let gradient_overlay = div()
2516                            .rounded_b_lg()
2517                            .h_full()
2518                            .absolute()
2519                            .w_full()
2520                            .bottom_0()
2521                            .left_0()
2522                            .bg(linear_gradient(
2523                                180.,
2524                                linear_color_stop(editor_bg, 1.),
2525                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2526                            ));
2527
2528                        this.child(
2529                            div()
2530                                .relative()
2531                                .bg(editor_bg)
2532                                .rounded_b_lg()
2533                                .mt_2()
2534                                .pl_4()
2535                                .child(
2536                                    div()
2537                                        .id(("thinking-content", ix))
2538                                        .max_h_20()
2539                                        .track_scroll(scroll_handle)
2540                                        .text_ui_sm(cx)
2541                                        .overflow_hidden()
2542                                        .child(
2543                                            MarkdownElement::new(
2544                                                markdown.clone(),
2545                                                default_markdown_style(window, cx),
2546                                            )
2547                                            .on_url_click({
2548                                                let workspace = self.workspace.clone();
2549                                                move |text, window, cx| {
2550                                                    open_markdown_link(
2551                                                        text,
2552                                                        workspace.clone(),
2553                                                        window,
2554                                                        cx,
2555                                                    );
2556                                                }
2557                                            }),
2558                                        ),
2559                                )
2560                                .child(gradient_overlay),
2561                        )
2562                    })
2563                    .when(is_open, |this| {
2564                        this.child(
2565                            div()
2566                                .id(("thinking-content", ix))
2567                                .h_full()
2568                                .bg(editor_bg)
2569                                .text_ui_sm(cx)
2570                                .child(
2571                                    MarkdownElement::new(
2572                                        markdown.clone(),
2573                                        default_markdown_style(window, cx),
2574                                    )
2575                                    .on_url_click({
2576                                        let workspace = self.workspace.clone();
2577                                        move |text, window, cx| {
2578                                            open_markdown_link(text, workspace.clone(), window, cx);
2579                                        }
2580                                    }),
2581                                ),
2582                        )
2583                    })
2584            } else {
2585                this.v_flex()
2586                    .mt_neg_2()
2587                    .child(
2588                        h_flex()
2589                            .group("disclosure-header")
2590                            .pr_1()
2591                            .justify_between()
2592                            .opacity(0.8)
2593                            .hover(|style| style.opacity(1.))
2594                            .child(
2595                                h_flex()
2596                                    .gap_1p5()
2597                                    .child(
2598                                        Icon::new(IconName::LightBulb)
2599                                            .size(IconSize::XSmall)
2600                                            .color(Color::Muted),
2601                                    )
2602                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2603                            )
2604                            .child(
2605                                div().visible_on_hover("disclosure-header").child(
2606                                    Disclosure::new("thinking-disclosure", is_open)
2607                                        .opened_icon(IconName::ChevronUp)
2608                                        .closed_icon(IconName::ChevronDown)
2609                                        .on_click(cx.listener({
2610                                            move |this, _event, _window, _cx| {
2611                                                let is_open = this
2612                                                    .expanded_thinking_segments
2613                                                    .entry((message_id, ix))
2614                                                    .or_insert(false);
2615
2616                                                *is_open = !*is_open;
2617                                            }
2618                                        })),
2619                                ),
2620                            ),
2621                    )
2622                    .child(
2623                        div()
2624                            .id(("thinking-content", ix))
2625                            .relative()
2626                            .mt_1p5()
2627                            .ml_1p5()
2628                            .pl_2p5()
2629                            .border_l_1()
2630                            .border_color(cx.theme().colors().border_variant)
2631                            .text_ui_sm(cx)
2632                            .when(is_open, |this| {
2633                                this.child(
2634                                    MarkdownElement::new(
2635                                        markdown.clone(),
2636                                        default_markdown_style(window, cx),
2637                                    )
2638                                    .on_url_click({
2639                                        let workspace = self.workspace.clone();
2640                                        move |text, window, cx| {
2641                                            open_markdown_link(text, workspace.clone(), window, cx);
2642                                        }
2643                                    }),
2644                                )
2645                            }),
2646                    )
2647            }
2648        })
2649    }
2650
2651    fn render_tool_use(
2652        &self,
2653        tool_use: ToolUse,
2654        window: &mut Window,
2655        workspace: WeakEntity<Workspace>,
2656        cx: &mut Context<Self>,
2657    ) -> impl IntoElement + use<> {
2658        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2659            return card.render(&tool_use.status, window, workspace, cx);
2660        }
2661
2662        let is_open = self
2663            .expanded_tool_uses
2664            .get(&tool_use.id)
2665            .copied()
2666            .unwrap_or_default();
2667
2668        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2669
2670        let fs = self
2671            .workspace
2672            .upgrade()
2673            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2674        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2675        let needs_confirmation_tools = tool_use.needs_confirmation;
2676
2677        let status_icons = div().child(match &tool_use.status {
2678            ToolUseStatus::NeedsConfirmation => {
2679                let icon = Icon::new(IconName::Warning)
2680                    .color(Color::Warning)
2681                    .size(IconSize::Small);
2682                icon.into_any_element()
2683            }
2684            ToolUseStatus::Pending
2685            | ToolUseStatus::InputStillStreaming
2686            | ToolUseStatus::Running => {
2687                let icon = Icon::new(IconName::ArrowCircle)
2688                    .color(Color::Accent)
2689                    .size(IconSize::Small);
2690                icon.with_animation(
2691                    "arrow-circle",
2692                    Animation::new(Duration::from_secs(2)).repeat(),
2693                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2694                )
2695                .into_any_element()
2696            }
2697            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2698            ToolUseStatus::Error(_) => {
2699                let icon = Icon::new(IconName::Close)
2700                    .color(Color::Error)
2701                    .size(IconSize::Small);
2702                icon.into_any_element()
2703            }
2704        });
2705
2706        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2707        let results_content_container = || v_flex().p_2().gap_0p5();
2708
2709        let results_content = v_flex()
2710            .gap_1()
2711            .child(
2712                results_content_container()
2713                    .child(
2714                        Label::new("Input")
2715                            .size(LabelSize::XSmall)
2716                            .color(Color::Muted)
2717                            .buffer_font(cx),
2718                    )
2719                    .child(
2720                        div()
2721                            .w_full()
2722                            .text_ui_sm(cx)
2723                            .children(rendered_tool_use.as_ref().map(|rendered| {
2724                                MarkdownElement::new(
2725                                    rendered.input.clone(),
2726                                    tool_use_markdown_style(window, cx),
2727                                )
2728                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2729                                    copy_button: false,
2730                                    copy_button_on_hover: false,
2731                                    border: false,
2732                                })
2733                                .on_url_click({
2734                                    let workspace = self.workspace.clone();
2735                                    move |text, window, cx| {
2736                                        open_markdown_link(text, workspace.clone(), window, cx);
2737                                    }
2738                                })
2739                            })),
2740                    ),
2741            )
2742            .map(|container| match tool_use.status {
2743                ToolUseStatus::Finished(_) => container.child(
2744                    results_content_container()
2745                        .border_t_1()
2746                        .border_color(self.tool_card_border_color(cx))
2747                        .child(
2748                            Label::new("Result")
2749                                .size(LabelSize::XSmall)
2750                                .color(Color::Muted)
2751                                .buffer_font(cx),
2752                        )
2753                        .child(div().w_full().text_ui_sm(cx).children(
2754                            rendered_tool_use.as_ref().map(|rendered| {
2755                                MarkdownElement::new(
2756                                    rendered.output.clone(),
2757                                    tool_use_markdown_style(window, cx),
2758                                )
2759                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2760                                    copy_button: false,
2761                                    copy_button_on_hover: false,
2762                                    border: false,
2763                                })
2764                                .on_url_click({
2765                                    let workspace = self.workspace.clone();
2766                                    move |text, window, cx| {
2767                                        open_markdown_link(text, workspace.clone(), window, cx);
2768                                    }
2769                                })
2770                                .into_any_element()
2771                            }),
2772                        )),
2773                ),
2774                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2775                    results_content_container()
2776                        .border_t_1()
2777                        .border_color(self.tool_card_border_color(cx))
2778                        .child(
2779                            h_flex()
2780                                .gap_1()
2781                                .child(
2782                                    Icon::new(IconName::ArrowCircle)
2783                                        .size(IconSize::Small)
2784                                        .color(Color::Accent)
2785                                        .with_animation(
2786                                            "arrow-circle",
2787                                            Animation::new(Duration::from_secs(2)).repeat(),
2788                                            |icon, delta| {
2789                                                icon.transform(Transformation::rotate(percentage(
2790                                                    delta,
2791                                                )))
2792                                            },
2793                                        ),
2794                                )
2795                                .child(
2796                                    Label::new("Running…")
2797                                        .size(LabelSize::XSmall)
2798                                        .color(Color::Muted)
2799                                        .buffer_font(cx),
2800                                ),
2801                        ),
2802                ),
2803                ToolUseStatus::Error(_) => container.child(
2804                    results_content_container()
2805                        .border_t_1()
2806                        .border_color(self.tool_card_border_color(cx))
2807                        .child(
2808                            Label::new("Error")
2809                                .size(LabelSize::XSmall)
2810                                .color(Color::Muted)
2811                                .buffer_font(cx),
2812                        )
2813                        .child(
2814                            div()
2815                                .text_ui_sm(cx)
2816                                .children(rendered_tool_use.as_ref().map(|rendered| {
2817                                    MarkdownElement::new(
2818                                        rendered.output.clone(),
2819                                        tool_use_markdown_style(window, cx),
2820                                    )
2821                                    .on_url_click({
2822                                        let workspace = self.workspace.clone();
2823                                        move |text, window, cx| {
2824                                            open_markdown_link(text, workspace.clone(), window, cx);
2825                                        }
2826                                    })
2827                                    .into_any_element()
2828                                })),
2829                        ),
2830                ),
2831                ToolUseStatus::Pending => container,
2832                ToolUseStatus::NeedsConfirmation => container.child(
2833                    results_content_container()
2834                        .border_t_1()
2835                        .border_color(self.tool_card_border_color(cx))
2836                        .child(
2837                            Label::new("Asking Permission")
2838                                .size(LabelSize::Small)
2839                                .color(Color::Muted)
2840                                .buffer_font(cx),
2841                        ),
2842                ),
2843            });
2844
2845        let gradient_overlay = |color: Hsla| {
2846            div()
2847                .h_full()
2848                .absolute()
2849                .w_12()
2850                .bottom_0()
2851                .map(|element| {
2852                    if is_status_finished {
2853                        element.right_6()
2854                    } else {
2855                        element.right(px(44.))
2856                    }
2857                })
2858                .bg(linear_gradient(
2859                    90.,
2860                    linear_color_stop(color, 1.),
2861                    linear_color_stop(color.opacity(0.2), 0.),
2862                ))
2863        };
2864
2865        v_flex().gap_1().mb_2().map(|element| {
2866            if !needs_confirmation_tools {
2867                element.child(
2868                    v_flex()
2869                        .child(
2870                            h_flex()
2871                                .group("disclosure-header")
2872                                .relative()
2873                                .gap_1p5()
2874                                .justify_between()
2875                                .opacity(0.8)
2876                                .hover(|style| style.opacity(1.))
2877                                .when(!is_status_finished, |this| this.pr_2())
2878                                .child(
2879                                    h_flex()
2880                                        .id("tool-label-container")
2881                                        .gap_1p5()
2882                                        .max_w_full()
2883                                        .overflow_x_scroll()
2884                                        .child(
2885                                            Icon::new(tool_use.icon)
2886                                                .size(IconSize::XSmall)
2887                                                .color(Color::Muted),
2888                                        )
2889                                        .child(
2890                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2891                                                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| {
2892                                                    open_markdown_link(text, workspace.clone(), window, cx);
2893                                                }}))
2894                                            ),
2895                                        ),
2896                                )
2897                                .child(
2898                                    h_flex()
2899                                        .gap_1()
2900                                        .child(
2901                                            div().visible_on_hover("disclosure-header").child(
2902                                                Disclosure::new("tool-use-disclosure", is_open)
2903                                                    .opened_icon(IconName::ChevronUp)
2904                                                    .closed_icon(IconName::ChevronDown)
2905                                                    .on_click(cx.listener({
2906                                                        let tool_use_id = tool_use.id.clone();
2907                                                        move |this, _event, _window, _cx| {
2908                                                            let is_open = this
2909                                                                .expanded_tool_uses
2910                                                                .entry(tool_use_id.clone())
2911                                                                .or_insert(false);
2912
2913                                                            *is_open = !*is_open;
2914                                                        }
2915                                                    })),
2916                                            ),
2917                                        )
2918                                        .child(status_icons),
2919                                )
2920                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2921                        )
2922                        .map(|parent| {
2923                            if !is_open {
2924                                return parent;
2925                            }
2926
2927                            parent.child(
2928                                v_flex()
2929                                    .mt_1()
2930                                    .border_1()
2931                                    .border_color(self.tool_card_border_color(cx))
2932                                    .bg(cx.theme().colors().editor_background)
2933                                    .rounded_lg()
2934                                    .child(results_content),
2935                            )
2936                        }),
2937                )
2938            } else {
2939                v_flex()
2940                    .mb_2()
2941                    .rounded_lg()
2942                    .border_1()
2943                    .border_color(self.tool_card_border_color(cx))
2944                    .overflow_hidden()
2945                    .child(
2946                        h_flex()
2947                            .group("disclosure-header")
2948                            .relative()
2949                            .justify_between()
2950                            .py_1()
2951                            .map(|element| {
2952                                if is_status_finished {
2953                                    element.pl_2().pr_0p5()
2954                                } else {
2955                                    element.px_2()
2956                                }
2957                            })
2958                            .bg(self.tool_card_header_bg(cx))
2959                            .map(|element| {
2960                                if is_open {
2961                                    element.border_b_1().rounded_t_md()
2962                                } else if needs_confirmation {
2963                                    element.rounded_t_md()
2964                                } else {
2965                                    element.rounded_md()
2966                                }
2967                            })
2968                            .border_color(self.tool_card_border_color(cx))
2969                            .child(
2970                                h_flex()
2971                                    .id("tool-label-container")
2972                                    .gap_1p5()
2973                                    .max_w_full()
2974                                    .overflow_x_scroll()
2975                                    .child(
2976                                        Icon::new(tool_use.icon)
2977                                            .size(IconSize::XSmall)
2978                                            .color(Color::Muted),
2979                                    )
2980                                    .child(
2981                                        h_flex().pr_8().text_ui_sm(cx).children(
2982                                            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| {
2983                                                open_markdown_link(text, workspace.clone(), window, cx);
2984                                            }}))
2985                                        ),
2986                                    ),
2987                            )
2988                            .child(
2989                                h_flex()
2990                                    .gap_1()
2991                                    .child(
2992                                        div().visible_on_hover("disclosure-header").child(
2993                                            Disclosure::new("tool-use-disclosure", is_open)
2994                                                .opened_icon(IconName::ChevronUp)
2995                                                .closed_icon(IconName::ChevronDown)
2996                                                .on_click(cx.listener({
2997                                                    let tool_use_id = tool_use.id.clone();
2998                                                    move |this, _event, _window, _cx| {
2999                                                        let is_open = this
3000                                                            .expanded_tool_uses
3001                                                            .entry(tool_use_id.clone())
3002                                                            .or_insert(false);
3003
3004                                                        *is_open = !*is_open;
3005                                                    }
3006                                                })),
3007                                        ),
3008                                    )
3009                                    .child(status_icons),
3010                            )
3011                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
3012                    )
3013                    .map(|parent| {
3014                        if !is_open {
3015                            return parent;
3016                        }
3017
3018                        parent.child(
3019                            v_flex()
3020                                .bg(cx.theme().colors().editor_background)
3021                                .map(|element| {
3022                                    if  needs_confirmation {
3023                                        element.rounded_none()
3024                                    } else {
3025                                        element.rounded_b_lg()
3026                                    }
3027                                })
3028                                .child(results_content),
3029                        )
3030                    })
3031                    .when(needs_confirmation, |this| {
3032                        this.child(
3033                            h_flex()
3034                                .py_1()
3035                                .pl_2()
3036                                .pr_1()
3037                                .gap_1()
3038                                .justify_between()
3039                                .bg(cx.theme().colors().editor_background)
3040                                .border_t_1()
3041                                .border_color(self.tool_card_border_color(cx))
3042                                .rounded_b_lg()
3043                                .child(
3044                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3045                                )
3046                                .child(
3047                                    h_flex()
3048                                        .gap_0p5()
3049                                        .child({
3050                                            let tool_id = tool_use.id.clone();
3051                                            Button::new(
3052                                                "always-allow-tool-action",
3053                                                "Always Allow",
3054                                            )
3055                                            .label_size(LabelSize::Small)
3056                                            .icon(IconName::CheckDouble)
3057                                            .icon_position(IconPosition::Start)
3058                                            .icon_size(IconSize::Small)
3059                                            .icon_color(Color::Success)
3060                                            .tooltip(move |window, cx|  {
3061                                                Tooltip::with_meta(
3062                                                    "Never ask for permission",
3063                                                    None,
3064                                                    "Restore the original behavior in your Agent Panel settings",
3065                                                    window,
3066                                                    cx,
3067                                                )
3068                                            })
3069                                            .on_click(cx.listener(
3070                                                move |this, event, window, cx| {
3071                                                    if let Some(fs) = fs.clone() {
3072                                                        update_settings_file::<AssistantSettings>(
3073                                                            fs.clone(),
3074                                                            cx,
3075                                                            |settings, _| {
3076                                                                settings.set_always_allow_tool_actions(true);
3077                                                            },
3078                                                        );
3079                                                    }
3080                                                    this.handle_allow_tool(
3081                                                        tool_id.clone(),
3082                                                        event,
3083                                                        window,
3084                                                        cx,
3085                                                    )
3086                                                },
3087                                            ))
3088                                        })
3089                                        .child(ui::Divider::vertical())
3090                                        .child({
3091                                            let tool_id = tool_use.id.clone();
3092                                            Button::new("allow-tool-action", "Allow")
3093                                                .label_size(LabelSize::Small)
3094                                                .icon(IconName::Check)
3095                                                .icon_position(IconPosition::Start)
3096                                                .icon_size(IconSize::Small)
3097                                                .icon_color(Color::Success)
3098                                                .on_click(cx.listener(
3099                                                    move |this, event, window, cx| {
3100                                                        this.handle_allow_tool(
3101                                                            tool_id.clone(),
3102                                                            event,
3103                                                            window,
3104                                                            cx,
3105                                                        )
3106                                                    },
3107                                                ))
3108                                        })
3109                                        .child({
3110                                            let tool_id = tool_use.id.clone();
3111                                            let tool_name: Arc<str> = tool_use.name.into();
3112                                            Button::new("deny-tool", "Deny")
3113                                                .label_size(LabelSize::Small)
3114                                                .icon(IconName::Close)
3115                                                .icon_position(IconPosition::Start)
3116                                                .icon_size(IconSize::Small)
3117                                                .icon_color(Color::Error)
3118                                                .on_click(cx.listener(
3119                                                    move |this, event, window, cx| {
3120                                                        this.handle_deny_tool(
3121                                                            tool_id.clone(),
3122                                                            tool_name.clone(),
3123                                                            event,
3124                                                            window,
3125                                                            cx,
3126                                                        )
3127                                                    },
3128                                                ))
3129                                        }),
3130                                ),
3131                        )
3132                    })
3133            }
3134        }).into_any_element()
3135    }
3136
3137    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3138        let project_context = self.thread.read(cx).project_context();
3139        let project_context = project_context.borrow();
3140        let Some(project_context) = project_context.as_ref() else {
3141            return div().into_any();
3142        };
3143
3144        let user_rules_text = if project_context.user_rules.is_empty() {
3145            None
3146        } else if project_context.user_rules.len() == 1 {
3147            let user_rules = &project_context.user_rules[0];
3148
3149            match user_rules.title.as_ref() {
3150                Some(title) => Some(format!("Using \"{title}\" user rule")),
3151                None => Some("Using user rule".into()),
3152            }
3153        } else {
3154            Some(format!(
3155                "Using {} user rules",
3156                project_context.user_rules.len()
3157            ))
3158        };
3159
3160        let first_user_rules_id = project_context
3161            .user_rules
3162            .first()
3163            .map(|user_rules| user_rules.uuid.0);
3164
3165        let rules_files = project_context
3166            .worktrees
3167            .iter()
3168            .filter_map(|worktree| worktree.rules_file.as_ref())
3169            .collect::<Vec<_>>();
3170
3171        let rules_file_text = match rules_files.as_slice() {
3172            &[] => None,
3173            &[rules_file] => Some(format!(
3174                "Using project {:?} file",
3175                rules_file.path_in_worktree
3176            )),
3177            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3178        };
3179
3180        if user_rules_text.is_none() && rules_file_text.is_none() {
3181            return div().into_any();
3182        }
3183
3184        v_flex()
3185            .pt_2()
3186            .px_2p5()
3187            .gap_1()
3188            .when_some(user_rules_text, |parent, user_rules_text| {
3189                parent.child(
3190                    h_flex()
3191                        .w_full()
3192                        .child(
3193                            Icon::new(RULES_ICON)
3194                                .size(IconSize::XSmall)
3195                                .color(Color::Disabled),
3196                        )
3197                        .child(
3198                            Label::new(user_rules_text)
3199                                .size(LabelSize::XSmall)
3200                                .color(Color::Muted)
3201                                .truncate()
3202                                .buffer_font(cx)
3203                                .ml_1p5()
3204                                .mr_0p5(),
3205                        )
3206                        .child(
3207                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3208                                .shape(ui::IconButtonShape::Square)
3209                                .icon_size(IconSize::XSmall)
3210                                .icon_color(Color::Ignored)
3211                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3212                                .tooltip(Tooltip::text("View User Rules"))
3213                                .on_click(move |_event, window, cx| {
3214                                    window.dispatch_action(
3215                                        Box::new(OpenRulesLibrary {
3216                                            prompt_to_select: first_user_rules_id,
3217                                        }),
3218                                        cx,
3219                                    )
3220                                }),
3221                        ),
3222                )
3223            })
3224            .when_some(rules_file_text, |parent, rules_file_text| {
3225                parent.child(
3226                    h_flex()
3227                        .w_full()
3228                        .child(
3229                            Icon::new(IconName::File)
3230                                .size(IconSize::XSmall)
3231                                .color(Color::Disabled),
3232                        )
3233                        .child(
3234                            Label::new(rules_file_text)
3235                                .size(LabelSize::XSmall)
3236                                .color(Color::Muted)
3237                                .buffer_font(cx)
3238                                .ml_1p5()
3239                                .mr_0p5(),
3240                        )
3241                        .child(
3242                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3243                                .shape(ui::IconButtonShape::Square)
3244                                .icon_size(IconSize::XSmall)
3245                                .icon_color(Color::Ignored)
3246                                .on_click(cx.listener(Self::handle_open_rules))
3247                                .tooltip(Tooltip::text("View Rules")),
3248                        ),
3249                )
3250            })
3251            .into_any()
3252    }
3253
3254    fn handle_allow_tool(
3255        &mut self,
3256        tool_use_id: LanguageModelToolUseId,
3257        _: &ClickEvent,
3258        window: &mut Window,
3259        cx: &mut Context<Self>,
3260    ) {
3261        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3262            .thread
3263            .read(cx)
3264            .pending_tool(&tool_use_id)
3265            .map(|tool_use| tool_use.status.clone())
3266        {
3267            self.thread.update(cx, |thread, cx| {
3268                if let Some(configured) = thread.get_or_init_configured_model(cx) {
3269                    thread.run_tool(
3270                        c.tool_use_id.clone(),
3271                        c.ui_text.clone(),
3272                        c.input.clone(),
3273                        c.request.clone(),
3274                        c.tool.clone(),
3275                        configured.model,
3276                        Some(window.window_handle()),
3277                        cx,
3278                    );
3279                }
3280            });
3281        }
3282    }
3283
3284    fn handle_deny_tool(
3285        &mut self,
3286        tool_use_id: LanguageModelToolUseId,
3287        tool_name: Arc<str>,
3288        _: &ClickEvent,
3289        window: &mut Window,
3290        cx: &mut Context<Self>,
3291    ) {
3292        let window_handle = window.window_handle();
3293        self.thread.update(cx, |thread, cx| {
3294            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3295        });
3296    }
3297
3298    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3299        let project_context = self.thread.read(cx).project_context();
3300        let project_context = project_context.borrow();
3301        let Some(project_context) = project_context.as_ref() else {
3302            return;
3303        };
3304
3305        let project_entry_ids = project_context
3306            .worktrees
3307            .iter()
3308            .flat_map(|worktree| worktree.rules_file.as_ref())
3309            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3310            .collect::<Vec<_>>();
3311
3312        self.workspace
3313            .update(cx, move |workspace, cx| {
3314                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3315                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3316                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3317                let project = workspace.project().read(cx);
3318                let project_paths = project_entry_ids
3319                    .into_iter()
3320                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3321                    .collect::<Vec<_>>();
3322                for project_path in project_paths {
3323                    workspace
3324                        .open_path(project_path, None, true, window, cx)
3325                        .detach_and_log_err(cx);
3326                }
3327            })
3328            .ok();
3329    }
3330
3331    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3332        for window in self.notifications.drain(..) {
3333            window
3334                .update(cx, |_, window, _| {
3335                    window.remove_window();
3336                })
3337                .ok();
3338
3339            self.notification_subscriptions.remove(&window);
3340        }
3341    }
3342
3343    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3344        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3345            return None;
3346        }
3347
3348        Some(
3349            div()
3350                .occlude()
3351                .id("active-thread-scrollbar")
3352                .on_mouse_move(cx.listener(|_, _, _, cx| {
3353                    cx.notify();
3354                    cx.stop_propagation()
3355                }))
3356                .on_hover(|_, _, cx| {
3357                    cx.stop_propagation();
3358                })
3359                .on_any_mouse_down(|_, _, cx| {
3360                    cx.stop_propagation();
3361                })
3362                .on_mouse_up(
3363                    MouseButton::Left,
3364                    cx.listener(|_, _, _, cx| {
3365                        cx.stop_propagation();
3366                    }),
3367                )
3368                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3369                    cx.notify();
3370                }))
3371                .h_full()
3372                .absolute()
3373                .right_1()
3374                .top_1()
3375                .bottom_0()
3376                .w(px(12.))
3377                .cursor_default()
3378                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3379        )
3380    }
3381
3382    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3383        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3384        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3385            cx.background_executor()
3386                .timer(SCROLLBAR_SHOW_INTERVAL)
3387                .await;
3388            thread
3389                .update(cx, |thread, cx| {
3390                    if !thread.scrollbar_state.is_dragging() {
3391                        thread.show_scrollbar = false;
3392                        cx.notify();
3393                    }
3394                })
3395                .log_err();
3396        }))
3397    }
3398
3399    pub fn is_codeblock_expanded(&self, message_id: MessageId, ix: usize) -> bool {
3400        self.expanded_code_blocks
3401            .get(&(message_id, ix))
3402            .copied()
3403            .unwrap_or(true)
3404    }
3405
3406    pub fn toggle_codeblock_expanded(&mut self, message_id: MessageId, ix: usize) {
3407        let is_expanded = self
3408            .expanded_code_blocks
3409            .entry((message_id, ix))
3410            .or_insert(true);
3411        *is_expanded = !*is_expanded;
3412    }
3413
3414    pub fn scroll_to_bottom(&mut self, cx: &mut Context<Self>) {
3415        self.list_state.reset(self.messages.len());
3416        cx.notify();
3417    }
3418}
3419
3420pub enum ActiveThreadEvent {
3421    EditingMessageTokenCountChanged,
3422}
3423
3424impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3425
3426impl Render for ActiveThread {
3427    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3428        v_flex()
3429            .size_full()
3430            .relative()
3431            .bg(cx.theme().colors().panel_background)
3432            .on_mouse_move(cx.listener(|this, _, _, cx| {
3433                this.show_scrollbar = true;
3434                this.hide_scrollbar_later(cx);
3435                cx.notify();
3436            }))
3437            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3438                this.show_scrollbar = true;
3439                this.hide_scrollbar_later(cx);
3440                cx.notify();
3441            }))
3442            .on_mouse_up(
3443                MouseButton::Left,
3444                cx.listener(|this, _, _, cx| {
3445                    this.hide_scrollbar_later(cx);
3446                }),
3447            )
3448            .child(list(self.list_state.clone()).flex_grow())
3449            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3450                this.child(scrollbar)
3451            })
3452    }
3453}
3454
3455pub(crate) fn open_active_thread_as_markdown(
3456    thread: Entity<Thread>,
3457    workspace: Entity<Workspace>,
3458    window: &mut Window,
3459    cx: &mut App,
3460) -> Task<anyhow::Result<()>> {
3461    let markdown_language_task = workspace
3462        .read(cx)
3463        .app_state()
3464        .languages
3465        .language_for_name("Markdown");
3466
3467    window.spawn(cx, async move |cx| {
3468        let markdown_language = markdown_language_task.await?;
3469
3470        workspace.update_in(cx, |workspace, window, cx| {
3471            let thread = thread.read(cx);
3472            let markdown = thread.to_markdown(cx)?;
3473            let thread_summary = thread.summary().or_default().to_string();
3474
3475            let project = workspace.project().clone();
3476
3477            if !project.read(cx).is_local() {
3478                anyhow::bail!("failed to open active thread as markdown in remote project");
3479            }
3480
3481            let buffer = project.update(cx, |project, cx| {
3482                project.create_local_buffer(&markdown, Some(markdown_language), cx)
3483            });
3484            let buffer =
3485                cx.new(|cx| MultiBuffer::singleton(buffer, cx).with_title(thread_summary.clone()));
3486
3487            workspace.add_item_to_active_pane(
3488                Box::new(cx.new(|cx| {
3489                    let mut editor =
3490                        Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
3491                    editor.set_breadcrumb_header(thread_summary);
3492                    editor
3493                })),
3494                None,
3495                true,
3496                window,
3497                cx,
3498            );
3499
3500            anyhow::Ok(())
3501        })??;
3502        anyhow::Ok(())
3503    })
3504}
3505
3506pub(crate) fn open_context(
3507    context: &AgentContextHandle,
3508    workspace: Entity<Workspace>,
3509    window: &mut Window,
3510    cx: &mut App,
3511) {
3512    match context {
3513        AgentContextHandle::File(file_context) => {
3514            if let Some(project_path) = file_context.project_path(cx) {
3515                workspace.update(cx, |workspace, cx| {
3516                    workspace
3517                        .open_path(project_path, None, true, window, cx)
3518                        .detach_and_log_err(cx);
3519                });
3520            }
3521        }
3522
3523        AgentContextHandle::Directory(directory_context) => {
3524            let entry_id = directory_context.entry_id;
3525            workspace.update(cx, |workspace, cx| {
3526                workspace.project().update(cx, |_project, cx| {
3527                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3528                })
3529            })
3530        }
3531
3532        AgentContextHandle::Symbol(symbol_context) => {
3533            let buffer = symbol_context.buffer.read(cx);
3534            if let Some(project_path) = buffer.project_path(cx) {
3535                let snapshot = buffer.snapshot();
3536                let target_position = symbol_context.range.start.to_point(&snapshot);
3537                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3538                    .detach();
3539            }
3540        }
3541
3542        AgentContextHandle::Selection(selection_context) => {
3543            let buffer = selection_context.buffer.read(cx);
3544            if let Some(project_path) = buffer.project_path(cx) {
3545                let snapshot = buffer.snapshot();
3546                let target_position = selection_context.range.start.to_point(&snapshot);
3547
3548                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3549                    .detach();
3550            }
3551        }
3552
3553        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3554            cx.open_url(&fetched_url_context.url);
3555        }
3556
3557        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3558            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3559                panel.update(cx, |panel, cx| {
3560                    panel.open_thread(thread_context.thread.clone(), window, cx);
3561                });
3562            }
3563        }),
3564
3565        AgentContextHandle::TextThread(text_thread_context) => {
3566            workspace.update(cx, |workspace, cx| {
3567                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3568                    panel.update(cx, |panel, cx| {
3569                        panel.open_prompt_editor(text_thread_context.context.clone(), window, cx)
3570                    });
3571                }
3572            })
3573        }
3574
3575        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3576            Box::new(OpenRulesLibrary {
3577                prompt_to_select: Some(rules_context.prompt_id.0),
3578            }),
3579            cx,
3580        ),
3581
3582        AgentContextHandle::Image(_) => {}
3583    }
3584}
3585
3586fn open_editor_at_position(
3587    project_path: project::ProjectPath,
3588    target_position: Point,
3589    workspace: &Entity<Workspace>,
3590    window: &mut Window,
3591    cx: &mut App,
3592) -> Task<()> {
3593    let open_task = workspace.update(cx, |workspace, cx| {
3594        workspace.open_path(project_path, None, true, window, cx)
3595    });
3596    window.spawn(cx, async move |cx| {
3597        if let Some(active_editor) = open_task
3598            .await
3599            .log_err()
3600            .and_then(|item| item.downcast::<Editor>())
3601        {
3602            active_editor
3603                .downgrade()
3604                .update_in(cx, |editor, window, cx| {
3605                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3606                })
3607                .log_err();
3608        }
3609    })
3610}
3611
3612#[cfg(test)]
3613mod tests {
3614    use assistant_tool::{ToolRegistry, ToolWorkingSet};
3615    use editor::EditorSettings;
3616    use fs::FakeFs;
3617    use gpui::{AppContext, TestAppContext, VisualTestContext};
3618    use language_model::{LanguageModel, fake_provider::FakeLanguageModel};
3619    use project::Project;
3620    use prompt_store::PromptBuilder;
3621    use serde_json::json;
3622    use settings::SettingsStore;
3623    use util::path;
3624    use workspace::CollaboratorId;
3625
3626    use crate::{ContextLoadResult, thread_store};
3627
3628    use super::*;
3629
3630    #[gpui::test]
3631    async fn test_agent_is_unfollowed_after_cancelling_completion(cx: &mut TestAppContext) {
3632        init_test_settings(cx);
3633
3634        let project = create_test_project(
3635            cx,
3636            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
3637        )
3638        .await;
3639
3640        let (cx, _active_thread, workspace, thread, model) =
3641            setup_test_environment(cx, project.clone()).await;
3642
3643        // Insert user message without any context (empty context vector)
3644        thread.update(cx, |thread, cx| {
3645            thread.insert_user_message(
3646                "What is the best way to learn Rust?",
3647                ContextLoadResult::default(),
3648                None,
3649                vec![],
3650                cx,
3651            );
3652        });
3653
3654        // Stream response to user message
3655        thread.update(cx, |thread, cx| {
3656            let request = thread.to_completion_request(model.clone(), cx);
3657            thread.stream_completion(request, model, cx.active_window(), cx)
3658        });
3659        // Follow the agent
3660        cx.update(|window, cx| {
3661            workspace.update(cx, |workspace, cx| {
3662                workspace.follow(CollaboratorId::Agent, window, cx);
3663            })
3664        });
3665        assert!(cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3666
3667        // Cancel the current completion
3668        thread.update(cx, |thread, cx| {
3669            thread.cancel_last_completion(cx.active_window(), cx)
3670        });
3671
3672        cx.executor().run_until_parked();
3673
3674        // No longer following the agent
3675        assert!(!cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3676    }
3677
3678    fn init_test_settings(cx: &mut TestAppContext) {
3679        cx.update(|cx| {
3680            let settings_store = SettingsStore::test(cx);
3681            cx.set_global(settings_store);
3682            language::init(cx);
3683            Project::init_settings(cx);
3684            AssistantSettings::register(cx);
3685            prompt_store::init(cx);
3686            thread_store::init(cx);
3687            workspace::init_settings(cx);
3688            language_model::init_settings(cx);
3689            ThemeSettings::register(cx);
3690            EditorSettings::register(cx);
3691            ToolRegistry::default_global(cx);
3692        });
3693    }
3694
3695    // Helper to create a test project with test files
3696    async fn create_test_project(
3697        cx: &mut TestAppContext,
3698        files: serde_json::Value,
3699    ) -> Entity<Project> {
3700        let fs = FakeFs::new(cx.executor());
3701        fs.insert_tree(path!("/test"), files).await;
3702        Project::test(fs, [path!("/test").as_ref()], cx).await
3703    }
3704
3705    async fn setup_test_environment(
3706        cx: &mut TestAppContext,
3707        project: Entity<Project>,
3708    ) -> (
3709        &mut VisualTestContext,
3710        Entity<ActiveThread>,
3711        Entity<Workspace>,
3712        Entity<Thread>,
3713        Arc<dyn LanguageModel>,
3714    ) {
3715        let (workspace, cx) =
3716            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
3717
3718        let thread_store = cx
3719            .update(|_, cx| {
3720                ThreadStore::load(
3721                    project.clone(),
3722                    cx.new(|_| ToolWorkingSet::default()),
3723                    None,
3724                    Arc::new(PromptBuilder::new(None).unwrap()),
3725                    cx,
3726                )
3727            })
3728            .await
3729            .unwrap();
3730
3731        let text_thread_store = cx
3732            .update(|_, cx| {
3733                TextThreadStore::new(
3734                    project.clone(),
3735                    Arc::new(PromptBuilder::new(None).unwrap()),
3736                    Default::default(),
3737                    cx,
3738                )
3739            })
3740            .await
3741            .unwrap();
3742
3743        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
3744        let context_store =
3745            cx.new(|_cx| ContextStore::new(project.downgrade(), Some(thread_store.downgrade())));
3746
3747        let model = FakeLanguageModel::default();
3748        let model: Arc<dyn LanguageModel> = Arc::new(model);
3749
3750        let language_registry = LanguageRegistry::new(cx.executor());
3751        let language_registry = Arc::new(language_registry);
3752
3753        let active_thread = cx.update(|window, cx| {
3754            cx.new(|cx| {
3755                ActiveThread::new(
3756                    thread.clone(),
3757                    thread_store.clone(),
3758                    text_thread_store,
3759                    context_store.clone(),
3760                    language_registry.clone(),
3761                    workspace.downgrade(),
3762                    window,
3763                    cx,
3764                )
3765            })
3766        });
3767
3768        (cx, active_thread, workspace, thread, model)
3769    }
3770}