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.save_thread(cx);
1037                cx.notify();
1038            }
1039            ThreadEvent::MessageEdited(message_id) => {
1040                if let Some(message_segments) = self
1041                    .thread
1042                    .read(cx)
1043                    .message(*message_id)
1044                    .map(|message| message.segments.clone())
1045                {
1046                    self.edited_message(message_id, &message_segments, window, cx);
1047                }
1048
1049                self.scroll_to_bottom(cx);
1050                self.save_thread(cx);
1051                cx.notify();
1052            }
1053            ThreadEvent::MessageDeleted(message_id) => {
1054                self.deleted_message(message_id);
1055                self.save_thread(cx);
1056                cx.notify();
1057            }
1058            ThreadEvent::UsePendingTools { tool_uses } => {
1059                for tool_use in tool_uses {
1060                    self.render_tool_use_markdown(
1061                        tool_use.id.clone(),
1062                        tool_use.ui_text.clone(),
1063                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1064                        "".into(),
1065                        cx,
1066                    );
1067                }
1068            }
1069            ThreadEvent::StreamedToolUse {
1070                tool_use_id,
1071                ui_text,
1072                input,
1073            } => {
1074                self.render_tool_use_markdown(
1075                    tool_use_id.clone(),
1076                    ui_text.clone(),
1077                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1078                    "".into(),
1079                    cx,
1080                );
1081            }
1082            ThreadEvent::ToolFinished {
1083                pending_tool_use, ..
1084            } => {
1085                if let Some(tool_use) = pending_tool_use {
1086                    self.render_tool_use_markdown(
1087                        tool_use.id.clone(),
1088                        tool_use.ui_text.clone(),
1089                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1090                        self.thread
1091                            .read(cx)
1092                            .output_for_tool(&tool_use.id)
1093                            .map(|output| output.clone().into())
1094                            .unwrap_or("".into()),
1095                        cx,
1096                    );
1097                }
1098            }
1099            ThreadEvent::CheckpointChanged => cx.notify(),
1100            ThreadEvent::ReceivedTextChunk => {}
1101            ThreadEvent::InvalidToolInput {
1102                tool_use_id,
1103                ui_text,
1104                invalid_input_json,
1105            } => {
1106                self.render_tool_use_markdown(
1107                    tool_use_id.clone(),
1108                    ui_text,
1109                    invalid_input_json,
1110                    self.thread
1111                        .read(cx)
1112                        .output_for_tool(tool_use_id)
1113                        .map(|output| output.clone().into())
1114                        .unwrap_or("".into()),
1115                    cx,
1116                );
1117            }
1118            ThreadEvent::MissingToolUse {
1119                tool_use_id,
1120                ui_text,
1121            } => {
1122                self.render_tool_use_markdown(
1123                    tool_use_id.clone(),
1124                    ui_text,
1125                    "",
1126                    self.thread
1127                        .read(cx)
1128                        .output_for_tool(tool_use_id)
1129                        .map(|output| output.clone().into())
1130                        .unwrap_or("".into()),
1131                    cx,
1132                );
1133            }
1134        }
1135    }
1136
1137    fn handle_rules_loading_error(
1138        &mut self,
1139        _thread_store: Entity<ThreadStore>,
1140        error: &RulesLoadingError,
1141        cx: &mut Context<Self>,
1142    ) {
1143        self.last_error = Some(ThreadError::Message {
1144            header: "Error loading rules file".into(),
1145            message: error.message.clone(),
1146        });
1147        cx.notify();
1148    }
1149
1150    fn show_notification(
1151        &mut self,
1152        caption: impl Into<SharedString>,
1153        icon: IconName,
1154        window: &mut Window,
1155        cx: &mut Context<ActiveThread>,
1156    ) {
1157        if window.is_window_active() || !self.notifications.is_empty() {
1158            return;
1159        }
1160
1161        let title = self.thread.read(cx).summary().unwrap_or("Agent Panel");
1162
1163        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1164            NotifyWhenAgentWaiting::PrimaryScreen => {
1165                if let Some(primary) = cx.primary_display() {
1166                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1167                }
1168            }
1169            NotifyWhenAgentWaiting::AllScreens => {
1170                let caption = caption.into();
1171                for screen in cx.displays() {
1172                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1173                }
1174            }
1175            NotifyWhenAgentWaiting::Never => {
1176                // Don't show anything
1177            }
1178        }
1179    }
1180
1181    fn pop_up(
1182        &mut self,
1183        icon: IconName,
1184        caption: SharedString,
1185        title: SharedString,
1186        window: &mut Window,
1187        screen: Rc<dyn PlatformDisplay>,
1188        cx: &mut Context<'_, ActiveThread>,
1189    ) {
1190        let options = AgentNotification::window_options(screen, cx);
1191
1192        let project_name = self.workspace.upgrade().and_then(|workspace| {
1193            workspace
1194                .read(cx)
1195                .project()
1196                .read(cx)
1197                .visible_worktrees(cx)
1198                .next()
1199                .map(|worktree| worktree.read(cx).root_name().to_string())
1200        });
1201
1202        if let Some(screen_window) = cx
1203            .open_window(options, |_, cx| {
1204                cx.new(|_| {
1205                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1206                })
1207            })
1208            .log_err()
1209        {
1210            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1211                self.notification_subscriptions
1212                    .entry(screen_window)
1213                    .or_insert_with(Vec::new)
1214                    .push(cx.subscribe_in(&pop_up, window, {
1215                        |this, _, event, window, cx| match event {
1216                            AgentNotificationEvent::Accepted => {
1217                                let handle = window.window_handle();
1218                                cx.activate(true);
1219
1220                                let workspace_handle = this.workspace.clone();
1221
1222                                // If there are multiple Zed windows, activate the correct one.
1223                                cx.defer(move |cx| {
1224                                    handle
1225                                        .update(cx, |_view, window, _cx| {
1226                                            window.activate_window();
1227
1228                                            if let Some(workspace) = workspace_handle.upgrade() {
1229                                                workspace.update(_cx, |workspace, cx| {
1230                                                    workspace.focus_panel::<AgentPanel>(window, cx);
1231                                                });
1232                                            }
1233                                        })
1234                                        .log_err();
1235                                });
1236
1237                                this.dismiss_notifications(cx);
1238                            }
1239                            AgentNotificationEvent::Dismissed => {
1240                                this.dismiss_notifications(cx);
1241                            }
1242                        }
1243                    }));
1244
1245                self.notifications.push(screen_window);
1246
1247                // If the user manually refocuses the original window, dismiss the popup.
1248                self.notification_subscriptions
1249                    .entry(screen_window)
1250                    .or_insert_with(Vec::new)
1251                    .push({
1252                        let pop_up_weak = pop_up.downgrade();
1253
1254                        cx.observe_window_activation(window, move |_, window, cx| {
1255                            if window.is_window_active() {
1256                                if let Some(pop_up) = pop_up_weak.upgrade() {
1257                                    pop_up.update(cx, |_, cx| {
1258                                        cx.emit(AgentNotificationEvent::Dismissed);
1259                                    });
1260                                }
1261                            }
1262                        })
1263                    });
1264            }
1265        }
1266    }
1267
1268    /// Spawns a task to save the active thread.
1269    ///
1270    /// Only one task to save the thread will be in flight at a time.
1271    fn save_thread(&mut self, cx: &mut Context<Self>) {
1272        let thread = self.thread.clone();
1273        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1274            let task = this
1275                .update(cx, |this, cx| {
1276                    this.thread_store
1277                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1278                })
1279                .ok();
1280
1281            if let Some(task) = task {
1282                task.await.log_err();
1283            }
1284        }));
1285    }
1286
1287    fn start_editing_message(
1288        &mut self,
1289        message_id: MessageId,
1290        message_segments: &[MessageSegment],
1291        message_creases: &[MessageCrease],
1292        window: &mut Window,
1293        cx: &mut Context<Self>,
1294    ) {
1295        // User message should always consist of a single text segment,
1296        // therefore we can skip returning early if it's not a text segment.
1297        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1298            return;
1299        };
1300
1301        let editor = crate::message_editor::create_editor(
1302            self.workspace.clone(),
1303            self.context_store.downgrade(),
1304            self.thread_store.downgrade(),
1305            self.text_thread_store.downgrade(),
1306            window,
1307            cx,
1308        );
1309        editor.update(cx, |editor, cx| {
1310            editor.set_text(message_text.clone(), window, cx);
1311            insert_message_creases(editor, message_creases, &self.context_store, window, cx);
1312            editor.focus_handle(cx).focus(window);
1313            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1314        });
1315        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1316            EditorEvent::BufferEdited => {
1317                this.update_editing_message_token_count(true, cx);
1318            }
1319            _ => {}
1320        });
1321
1322        let context_picker_menu_handle = PopoverMenuHandle::default();
1323        let context_strip = cx.new(|cx| {
1324            ContextStrip::new(
1325                self.context_store.clone(),
1326                self.workspace.clone(),
1327                Some(self.thread_store.downgrade()),
1328                Some(self.text_thread_store.downgrade()),
1329                context_picker_menu_handle.clone(),
1330                SuggestContextKind::File,
1331                window,
1332                cx,
1333            )
1334        });
1335
1336        let context_strip_subscription =
1337            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1338
1339        self.editing_message = Some((
1340            message_id,
1341            EditingMessageState {
1342                editor: editor.clone(),
1343                context_strip,
1344                context_picker_menu_handle,
1345                last_estimated_token_count: None,
1346                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1347                _update_token_count_task: None,
1348            },
1349        ));
1350        self.update_editing_message_token_count(false, cx);
1351        cx.notify();
1352    }
1353
1354    fn handle_context_strip_event(
1355        &mut self,
1356        _context_strip: &Entity<ContextStrip>,
1357        event: &ContextStripEvent,
1358        window: &mut Window,
1359        cx: &mut Context<Self>,
1360    ) {
1361        if let Some((_, state)) = self.editing_message.as_ref() {
1362            match event {
1363                ContextStripEvent::PickerDismissed
1364                | ContextStripEvent::BlurredEmpty
1365                | ContextStripEvent::BlurredDown => {
1366                    let editor_focus_handle = state.editor.focus_handle(cx);
1367                    window.focus(&editor_focus_handle);
1368                }
1369                ContextStripEvent::BlurredUp => {}
1370            }
1371        }
1372    }
1373
1374    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1375        let Some((message_id, state)) = self.editing_message.as_mut() else {
1376            return;
1377        };
1378
1379        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1380        state._update_token_count_task.take();
1381
1382        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1383            state.last_estimated_token_count.take();
1384            return;
1385        };
1386
1387        let editor = state.editor.clone();
1388        let thread = self.thread.clone();
1389        let message_id = *message_id;
1390
1391        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1392            if debounce {
1393                cx.background_executor()
1394                    .timer(Duration::from_millis(200))
1395                    .await;
1396            }
1397
1398            let token_count = if let Some(task) = cx
1399                .update(|cx| {
1400                    let Some(message) = thread.read(cx).message(message_id) else {
1401                        log::error!("Message that was being edited no longer exists");
1402                        return None;
1403                    };
1404                    let message_text = editor.read(cx).text(cx);
1405
1406                    if message_text.is_empty() && message.loaded_context.is_empty() {
1407                        return None;
1408                    }
1409
1410                    let mut request_message = LanguageModelRequestMessage {
1411                        role: language_model::Role::User,
1412                        content: Vec::new(),
1413                        cache: false,
1414                    };
1415
1416                    message
1417                        .loaded_context
1418                        .add_to_request_message(&mut request_message);
1419
1420                    if !message_text.is_empty() {
1421                        request_message
1422                            .content
1423                            .push(MessageContent::Text(message_text));
1424                    }
1425
1426                    let request = language_model::LanguageModelRequest {
1427                        thread_id: None,
1428                        prompt_id: None,
1429                        mode: None,
1430                        messages: vec![request_message],
1431                        tools: vec![],
1432                        tool_choice: None,
1433                        stop: vec![],
1434                        temperature: AssistantSettings::temperature_for_model(
1435                            &configured_model.model,
1436                            cx,
1437                        ),
1438                    };
1439
1440                    Some(configured_model.model.count_tokens(request, cx))
1441                })
1442                .ok()
1443                .flatten()
1444            {
1445                task.await.log_err()
1446            } else {
1447                Some(0)
1448            };
1449
1450            if let Some(token_count) = token_count {
1451                this.update(cx, |this, cx| {
1452                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1453                        return;
1454                    };
1455
1456                    state.last_estimated_token_count = Some(token_count);
1457                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1458                })
1459                .ok();
1460            };
1461        }));
1462    }
1463
1464    fn toggle_context_picker(
1465        &mut self,
1466        _: &crate::ToggleContextPicker,
1467        window: &mut Window,
1468        cx: &mut Context<Self>,
1469    ) {
1470        if let Some((_, state)) = self.editing_message.as_mut() {
1471            let handle = state.context_picker_menu_handle.clone();
1472            window.defer(cx, move |window, cx| {
1473                handle.toggle(window, cx);
1474            });
1475        }
1476    }
1477
1478    fn remove_all_context(
1479        &mut self,
1480        _: &crate::RemoveAllContext,
1481        _window: &mut Window,
1482        cx: &mut Context<Self>,
1483    ) {
1484        self.context_store.update(cx, |store, _cx| store.clear());
1485        cx.notify();
1486    }
1487
1488    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1489        if let Some((_, state)) = self.editing_message.as_mut() {
1490            if state.context_picker_menu_handle.is_deployed() {
1491                cx.propagate();
1492            } else {
1493                state.context_strip.focus_handle(cx).focus(window);
1494            }
1495        }
1496    }
1497
1498    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1499        let images = cx
1500            .read_from_clipboard()
1501            .map(|item| {
1502                item.into_entries()
1503                    .filter_map(|entry| {
1504                        if let ClipboardEntry::Image(image) = entry {
1505                            Some(image)
1506                        } else {
1507                            None
1508                        }
1509                    })
1510                    .collect::<Vec<_>>()
1511            })
1512            .unwrap_or_default();
1513
1514        if images.is_empty() {
1515            return;
1516        }
1517        cx.stop_propagation();
1518
1519        self.context_store.update(cx, |store, cx| {
1520            for image in images {
1521                store.add_image_instance(Arc::new(image), cx);
1522            }
1523        });
1524    }
1525
1526    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1527        self.editing_message.take();
1528        cx.notify();
1529    }
1530
1531    fn confirm_editing_message(
1532        &mut self,
1533        _: &menu::Confirm,
1534        window: &mut Window,
1535        cx: &mut Context<Self>,
1536    ) {
1537        let Some((message_id, state)) = self.editing_message.take() else {
1538            return;
1539        };
1540
1541        let Some(model) = self
1542            .thread
1543            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1544        else {
1545            return;
1546        };
1547
1548        if model.provider.must_accept_terms(cx) {
1549            cx.notify();
1550            return;
1551        }
1552
1553        let edited_text = state.editor.read(cx).text(cx);
1554
1555        let new_context = self
1556            .context_store
1557            .read(cx)
1558            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1559
1560        let project = self.thread.read(cx).project().clone();
1561        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1562
1563        let git_store = project.read(cx).git_store().clone();
1564        let checkpoint = git_store.update(cx, |git_store, cx| git_store.checkpoint(cx));
1565
1566        let load_context_task =
1567            crate::context::load_context(new_context, &project, &prompt_store, cx);
1568        self._load_edited_message_context_task =
1569            Some(cx.spawn_in(window, async move |this, cx| {
1570                let (context, checkpoint) =
1571                    futures::future::join(load_context_task, checkpoint).await;
1572                let _ = this
1573                    .update_in(cx, |this, window, cx| {
1574                        this.thread.update(cx, |thread, cx| {
1575                            thread.edit_message(
1576                                message_id,
1577                                Role::User,
1578                                vec![MessageSegment::Text(edited_text)],
1579                                Some(context.loaded_context),
1580                                checkpoint.ok(),
1581                                cx,
1582                            );
1583                            for message_id in this.messages_after(message_id) {
1584                                thread.delete_message(*message_id, cx);
1585                            }
1586                        });
1587
1588                        this.thread.update(cx, |thread, cx| {
1589                            thread.advance_prompt_id();
1590                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1591                        });
1592                        this._load_edited_message_context_task = None;
1593                        cx.notify();
1594                    })
1595                    .log_err();
1596            }));
1597    }
1598
1599    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1600        self.messages
1601            .iter()
1602            .position(|id| *id == message_id)
1603            .map(|index| &self.messages[index + 1..])
1604            .unwrap_or(&[])
1605    }
1606
1607    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1608        self.cancel_editing_message(&menu::Cancel, window, cx);
1609    }
1610
1611    fn handle_regenerate_click(
1612        &mut self,
1613        _: &ClickEvent,
1614        window: &mut Window,
1615        cx: &mut Context<Self>,
1616    ) {
1617        self.confirm_editing_message(&menu::Confirm, window, cx);
1618    }
1619
1620    fn handle_feedback_click(
1621        &mut self,
1622        message_id: MessageId,
1623        feedback: ThreadFeedback,
1624        window: &mut Window,
1625        cx: &mut Context<Self>,
1626    ) {
1627        let report = self.thread.update(cx, |thread, cx| {
1628            thread.report_message_feedback(message_id, feedback, cx)
1629        });
1630
1631        cx.spawn(async move |this, cx| {
1632            report.await?;
1633            this.update(cx, |_this, cx| cx.notify())
1634        })
1635        .detach_and_log_err(cx);
1636
1637        match feedback {
1638            ThreadFeedback::Positive => {
1639                self.open_feedback_editors.remove(&message_id);
1640            }
1641            ThreadFeedback::Negative => {
1642                self.handle_show_feedback_comments(message_id, window, cx);
1643            }
1644        }
1645    }
1646
1647    fn handle_show_feedback_comments(
1648        &mut self,
1649        message_id: MessageId,
1650        window: &mut Window,
1651        cx: &mut Context<Self>,
1652    ) {
1653        let buffer = cx.new(|cx| {
1654            let empty_string = String::new();
1655            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1656        });
1657
1658        let editor = cx.new(|cx| {
1659            let mut editor = Editor::new(
1660                editor::EditorMode::AutoHeight { max_lines: 4 },
1661                buffer,
1662                None,
1663                window,
1664                cx,
1665            );
1666            editor.set_placeholder_text(
1667                "What went wrong? Share your feedback so we can improve.",
1668                cx,
1669            );
1670            editor
1671        });
1672
1673        editor.read(cx).focus_handle(cx).focus(window);
1674        self.open_feedback_editors.insert(message_id, editor);
1675        cx.notify();
1676    }
1677
1678    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1679        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1680            return;
1681        };
1682
1683        let report_task = self.thread.update(cx, |thread, cx| {
1684            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1685        });
1686
1687        let comments = editor.read(cx).text(cx);
1688        if !comments.is_empty() {
1689            let thread_id = self.thread.read(cx).id().clone();
1690            let comments_value = String::from(comments.as_str());
1691
1692            let message_content = self
1693                .thread
1694                .read(cx)
1695                .message(message_id)
1696                .map(|msg| msg.to_string())
1697                .unwrap_or_default();
1698
1699            telemetry::event!(
1700                "Assistant Thread Feedback Comments",
1701                thread_id,
1702                message_id = message_id.0,
1703                message_content,
1704                comments = comments_value
1705            );
1706
1707            self.open_feedback_editors.remove(&message_id);
1708
1709            cx.spawn(async move |this, cx| {
1710                report_task.await?;
1711                this.update(cx, |_this, cx| cx.notify())
1712            })
1713            .detach_and_log_err(cx);
1714        }
1715    }
1716
1717    fn render_edit_message_editor(
1718        &self,
1719        state: &EditingMessageState,
1720        _window: &mut Window,
1721        cx: &Context<Self>,
1722    ) -> impl IntoElement {
1723        let settings = ThemeSettings::get_global(cx);
1724        let font_size = TextSize::Small
1725            .rems(cx)
1726            .to_pixels(settings.agent_font_size(cx));
1727        let line_height = font_size * 1.75;
1728
1729        let colors = cx.theme().colors();
1730
1731        let text_style = TextStyle {
1732            color: colors.text,
1733            font_family: settings.buffer_font.family.clone(),
1734            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1735            font_features: settings.buffer_font.features.clone(),
1736            font_size: font_size.into(),
1737            line_height: line_height.into(),
1738            ..Default::default()
1739        };
1740
1741        v_flex()
1742            .key_context("EditMessageEditor")
1743            .on_action(cx.listener(Self::toggle_context_picker))
1744            .on_action(cx.listener(Self::remove_all_context))
1745            .on_action(cx.listener(Self::move_up))
1746            .on_action(cx.listener(Self::cancel_editing_message))
1747            .on_action(cx.listener(Self::confirm_editing_message))
1748            .capture_action(cx.listener(Self::paste))
1749            .min_h_6()
1750            .w_full()
1751            .flex_grow()
1752            .gap_2()
1753            .child(state.context_strip.clone())
1754            .child(div().pt(px(-3.)).px_neg_0p5().child(EditorElement::new(
1755                &state.editor,
1756                EditorStyle {
1757                    background: colors.editor_background,
1758                    local_player: cx.theme().players().local(),
1759                    text: text_style,
1760                    syntax: cx.theme().syntax().clone(),
1761                    ..Default::default()
1762                },
1763            )))
1764    }
1765
1766    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1767        let message_id = self.messages[ix];
1768        let Some(message) = self.thread.read(cx).message(message_id) else {
1769            return Empty.into_any();
1770        };
1771        let message_creases = message.creases.clone();
1772
1773        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1774            return Empty.into_any();
1775        };
1776
1777        let workspace = self.workspace.clone();
1778        let thread = self.thread.read(cx);
1779
1780        // Get all the data we need from thread before we start using it in closures
1781        let checkpoint = thread.checkpoint_for_message(message_id);
1782        let added_context = thread
1783            .context_for_message(message_id)
1784            .map(|context| AddedContext::new_attached(context, cx))
1785            .collect::<Vec<_>>();
1786
1787        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1788        let has_tool_uses = !tool_uses.is_empty();
1789        let is_generating = thread.is_generating();
1790        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1791
1792        let is_first_message = ix == 0;
1793        let is_last_message = ix == self.messages.len() - 1;
1794
1795        let loading_dots = (is_generating_stale && is_last_message)
1796            .then(|| AnimatedLabel::new("").size(LabelSize::Small));
1797
1798        let editing_message_state = self
1799            .editing_message
1800            .as_ref()
1801            .filter(|(id, _)| *id == message_id)
1802            .map(|(_, state)| state);
1803
1804        let colors = cx.theme().colors();
1805        let editor_bg_color = colors.editor_background;
1806
1807        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::DocumentText)
1808            .icon_size(IconSize::XSmall)
1809            .icon_color(Color::Ignored)
1810            .tooltip(Tooltip::text("Open Thread as Markdown"))
1811            .on_click({
1812                let thread = self.thread.clone();
1813                let workspace = self.workspace.clone();
1814                move |_, window, cx| {
1815                    if let Some(workspace) = workspace.upgrade() {
1816                        open_active_thread_as_markdown(thread.clone(), workspace, window, cx)
1817                            .detach_and_log_err(cx);
1818                    }
1819                }
1820            });
1821
1822        // For all items that should be aligned with the LLM's response.
1823        const RESPONSE_PADDING_X: Pixels = px(19.);
1824
1825        let show_feedback = thread.is_turn_end(ix);
1826
1827        let feedback_container = h_flex()
1828            .group("feedback_container")
1829            .mt_1()
1830            .py_2()
1831            .px(RESPONSE_PADDING_X)
1832            .mr_1()
1833            .opacity(0.4)
1834            .hover(|style| style.opacity(1.))
1835            .gap_1p5()
1836            .flex_wrap()
1837            .justify_end();
1838        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1839            Some(feedback) => feedback_container
1840                .child(
1841                    div().visible_on_hover("feedback_container").child(
1842                        Label::new(match feedback {
1843                            ThreadFeedback::Positive => "Thanks for your feedback!",
1844                            ThreadFeedback::Negative => {
1845                                "We appreciate your feedback and will use it to improve."
1846                            }
1847                        })
1848                    .color(Color::Muted)
1849                    .size(LabelSize::XSmall)
1850                    .truncate())
1851                )
1852                .child(
1853                    h_flex()
1854                        .child(
1855                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1856                                .icon_size(IconSize::XSmall)
1857                                .icon_color(match feedback {
1858                                    ThreadFeedback::Positive => Color::Accent,
1859                                    ThreadFeedback::Negative => Color::Ignored,
1860                                })
1861                                .tooltip(Tooltip::text("Helpful Response"))
1862                                .on_click(cx.listener(move |this, _, window, cx| {
1863                                    this.handle_feedback_click(
1864                                        message_id,
1865                                        ThreadFeedback::Positive,
1866                                        window,
1867                                        cx,
1868                                    );
1869                                })),
1870                        )
1871                        .child(
1872                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1873                                .icon_size(IconSize::XSmall)
1874                                .icon_color(match feedback {
1875                                    ThreadFeedback::Positive => Color::Ignored,
1876                                    ThreadFeedback::Negative => Color::Accent,
1877                                })
1878                                .tooltip(Tooltip::text("Not Helpful"))
1879                                .on_click(cx.listener(move |this, _, window, cx| {
1880                                    this.handle_feedback_click(
1881                                        message_id,
1882                                        ThreadFeedback::Negative,
1883                                        window,
1884                                        cx,
1885                                    );
1886                                })),
1887                        )
1888                        .child(open_as_markdown),
1889                )
1890                .into_any_element(),
1891            None if AssistantSettings::get_global(cx).enable_feedback =>
1892                feedback_container
1893                .child(
1894                    div().visible_on_hover("feedback_container").child(
1895                        Label::new(
1896                            "Rating the thread sends all of your current conversation to the Zed team.",
1897                        )
1898                        .color(Color::Muted)
1899                    .size(LabelSize::XSmall)
1900                    .truncate())
1901                )
1902                .child(
1903                    h_flex()
1904                        .child(
1905                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1906                                .icon_size(IconSize::XSmall)
1907                                .icon_color(Color::Ignored)
1908                                .tooltip(Tooltip::text("Helpful Response"))
1909                                .on_click(cx.listener(move |this, _, window, cx| {
1910                                    this.handle_feedback_click(
1911                                        message_id,
1912                                        ThreadFeedback::Positive,
1913                                        window,
1914                                        cx,
1915                                    );
1916                                })),
1917                        )
1918                        .child(
1919                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1920                                .icon_size(IconSize::XSmall)
1921                                .icon_color(Color::Ignored)
1922                                .tooltip(Tooltip::text("Not Helpful"))
1923                                .on_click(cx.listener(move |this, _, window, cx| {
1924                                    this.handle_feedback_click(
1925                                        message_id,
1926                                        ThreadFeedback::Negative,
1927                                        window,
1928                                        cx,
1929                                    );
1930                                })),
1931                        )
1932                        .child(open_as_markdown),
1933                )
1934                .into_any_element(),
1935            None => feedback_container
1936                .child(h_flex().child(open_as_markdown))
1937                .into_any_element(),
1938        };
1939
1940        let message_is_empty = message.should_display_content();
1941        let has_content = !message_is_empty || !added_context.is_empty();
1942
1943        let message_content = has_content.then(|| {
1944            if let Some(state) = editing_message_state.as_ref() {
1945                self.render_edit_message_editor(state, window, cx)
1946                    .into_any_element()
1947            } else {
1948                v_flex()
1949                    .w_full()
1950                    .gap_1()
1951                    .when(!added_context.is_empty(), |parent| {
1952                        parent.child(h_flex().flex_wrap().gap_1().children(
1953                            added_context.into_iter().map(|added_context| {
1954                                let context = added_context.handle.clone();
1955                                ContextPill::added(added_context, false, false, None).on_click(
1956                                    Rc::new(cx.listener({
1957                                        let workspace = workspace.clone();
1958                                        move |_, _, window, cx| {
1959                                            if let Some(workspace) = workspace.upgrade() {
1960                                                open_context(&context, workspace, window, cx);
1961                                                cx.notify();
1962                                            }
1963                                        }
1964                                    })),
1965                                )
1966                            }),
1967                        ))
1968                    })
1969                    .when(!message_is_empty, |parent| {
1970                        parent.child(div().pt_0p5().min_h_6().child(self.render_message_content(
1971                            message_id,
1972                            rendered_message,
1973                            has_tool_uses,
1974                            workspace.clone(),
1975                            window,
1976                            cx,
1977                        )))
1978                    })
1979                    .into_any_element()
1980            }
1981        });
1982
1983        let styled_message = match message.role {
1984            Role::User => v_flex()
1985                .id(("message-container", ix))
1986                .pt_2()
1987                .pl_2()
1988                .pr_2p5()
1989                .pb_4()
1990                .child(
1991                    v_flex()
1992                        .id(("user-message", ix))
1993                        .bg(editor_bg_color)
1994                        .rounded_lg()
1995                        .shadow_md()
1996                        .border_1()
1997                        .border_color(colors.border)
1998                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1999                        .cursor_pointer()
2000                        .child(
2001                            h_flex()
2002                                .p_2p5()
2003                                .gap_1()
2004                                .items_end()
2005                                .children(message_content)
2006                                .when_some(editing_message_state, |this, state| {
2007                                    let focus_handle = state.editor.focus_handle(cx).clone();
2008                                    this.w_full().justify_between().child(
2009                                        h_flex()
2010                                            .gap_0p5()
2011                                            .child(
2012                                                IconButton::new(
2013                                                    "cancel-edit-message",
2014                                                    IconName::Close,
2015                                                )
2016                                                .shape(ui::IconButtonShape::Square)
2017                                                .icon_color(Color::Error)
2018                                                .icon_size(IconSize::Small)
2019                                                .tooltip({
2020                                                    let focus_handle = focus_handle.clone();
2021                                                    move |window, cx| {
2022                                                        Tooltip::for_action_in(
2023                                                            "Cancel Edit",
2024                                                            &menu::Cancel,
2025                                                            &focus_handle,
2026                                                            window,
2027                                                            cx,
2028                                                        )
2029                                                    }
2030                                                })
2031                                                .on_click(cx.listener(Self::handle_cancel_click)),
2032                                            )
2033                                            .child(
2034                                                IconButton::new(
2035                                                    "confirm-edit-message",
2036                                                    IconName::Return,
2037                                                )
2038                                                .disabled(state.editor.read(cx).is_empty(cx))
2039                                                .shape(ui::IconButtonShape::Square)
2040                                                .icon_color(Color::Muted)
2041                                                .icon_size(IconSize::Small)
2042                                                .tooltip({
2043                                                    let focus_handle = focus_handle.clone();
2044                                                    move |window, cx| {
2045                                                        Tooltip::for_action_in(
2046                                                            "Regenerate",
2047                                                            &menu::Confirm,
2048                                                            &focus_handle,
2049                                                            window,
2050                                                            cx,
2051                                                        )
2052                                                    }
2053                                                })
2054                                                .on_click(
2055                                                    cx.listener(Self::handle_regenerate_click),
2056                                                ),
2057                                            ),
2058                                    )
2059                                }),
2060                        )
2061                        .on_click(cx.listener({
2062                            let message_segments = message.segments.clone();
2063                            move |this, _, window, cx| {
2064                                this.start_editing_message(
2065                                    message_id,
2066                                    &message_segments,
2067                                    &message_creases,
2068                                    window,
2069                                    cx,
2070                                );
2071                            }
2072                        })),
2073                ),
2074            Role::Assistant => v_flex()
2075                .id(("message-container", ix))
2076                .px(RESPONSE_PADDING_X)
2077                .gap_2()
2078                .children(message_content)
2079                .when(has_tool_uses, |parent| {
2080                    parent.children(tool_uses.into_iter().map(|tool_use| {
2081                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2082                    }))
2083                }),
2084            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2085                v_flex()
2086                    .bg(colors.editor_background)
2087                    .rounded_sm()
2088                    .child(div().p_4().children(message_content)),
2089            ),
2090        };
2091
2092        let after_editing_message = self
2093            .editing_message
2094            .as_ref()
2095            .map_or(false, |(editing_message_id, _)| {
2096                message_id > *editing_message_id
2097            });
2098
2099        let panel_background = cx.theme().colors().panel_background;
2100
2101        let backdrop = div()
2102            .id("backdrop")
2103            .stop_mouse_events_except_scroll()
2104            .absolute()
2105            .inset_0()
2106            .size_full()
2107            .bg(panel_background)
2108            .opacity(0.8)
2109            .on_click(cx.listener(Self::handle_cancel_click));
2110
2111        v_flex()
2112            .w_full()
2113            .map(|parent| {
2114                if let Some(checkpoint) = checkpoint.filter(|_| !is_generating) {
2115                    let mut is_pending = false;
2116                    let mut error = None;
2117                    if let Some(last_restore_checkpoint) =
2118                        self.thread.read(cx).last_restore_checkpoint()
2119                    {
2120                        if last_restore_checkpoint.message_id() == message_id {
2121                            match last_restore_checkpoint {
2122                                LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2123                                LastRestoreCheckpoint::Error { error: err, .. } => {
2124                                    error = Some(err.clone());
2125                                }
2126                            }
2127                        }
2128                    }
2129
2130                    let restore_checkpoint_button =
2131                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2132                            .icon(if error.is_some() {
2133                                IconName::XCircle
2134                            } else {
2135                                IconName::Undo
2136                            })
2137                            .icon_size(IconSize::XSmall)
2138                            .icon_position(IconPosition::Start)
2139                            .icon_color(if error.is_some() {
2140                                Some(Color::Error)
2141                            } else {
2142                                None
2143                            })
2144                            .label_size(LabelSize::XSmall)
2145                            .disabled(is_pending)
2146                            .on_click(cx.listener(move |this, _, _window, cx| {
2147                                this.thread.update(cx, |thread, cx| {
2148                                    thread
2149                                        .restore_checkpoint(checkpoint.clone(), cx)
2150                                        .detach_and_log_err(cx);
2151                                });
2152                            }));
2153
2154                    let restore_checkpoint_button = if is_pending {
2155                        restore_checkpoint_button
2156                            .with_animation(
2157                                ("pulsating-restore-checkpoint-button", ix),
2158                                Animation::new(Duration::from_secs(2))
2159                                    .repeat()
2160                                    .with_easing(pulsating_between(0.6, 1.)),
2161                                |label, delta| label.alpha(delta),
2162                            )
2163                            .into_any_element()
2164                    } else if let Some(error) = error {
2165                        restore_checkpoint_button
2166                            .tooltip(Tooltip::text(error.to_string()))
2167                            .into_any_element()
2168                    } else {
2169                        restore_checkpoint_button.into_any_element()
2170                    };
2171
2172                    parent.child(
2173                        h_flex()
2174                            .pt_2p5()
2175                            .px_2p5()
2176                            .w_full()
2177                            .gap_1()
2178                            .child(ui::Divider::horizontal())
2179                            .child(restore_checkpoint_button)
2180                            .child(ui::Divider::horizontal()),
2181                    )
2182                } else {
2183                    parent
2184                }
2185            })
2186            .when(is_first_message, |parent| {
2187                parent.child(self.render_rules_item(cx))
2188            })
2189            .child(styled_message)
2190            .when(is_generating && is_last_message, |this| {
2191                this.child(
2192                    h_flex()
2193                        .h_8()
2194                        .mt_2()
2195                        .mb_4()
2196                        .ml_4()
2197                        .py_1p5()
2198                        .when_some(loading_dots, |this, loading_dots| this.child(loading_dots)),
2199                )
2200            })
2201            .when(show_feedback, move |parent| {
2202                parent.child(feedback_items).when_some(
2203                    self.open_feedback_editors.get(&message_id),
2204                    move |parent, feedback_editor| {
2205                        let focus_handle = feedback_editor.focus_handle(cx);
2206                        parent.child(
2207                            v_flex()
2208                                .key_context("AgentFeedbackMessageEditor")
2209                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2210                                    this.open_feedback_editors.remove(&message_id);
2211                                    cx.notify();
2212                                }))
2213                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2214                                    this.submit_feedback_message(message_id, cx);
2215                                    cx.notify();
2216                                }))
2217                                .on_action(cx.listener(Self::confirm_editing_message))
2218                                .mb_2()
2219                                .mx_4()
2220                                .p_2()
2221                                .rounded_md()
2222                                .border_1()
2223                                .border_color(cx.theme().colors().border)
2224                                .bg(cx.theme().colors().editor_background)
2225                                .child(feedback_editor.clone())
2226                                .child(
2227                                    h_flex()
2228                                        .gap_1()
2229                                        .justify_end()
2230                                        .child(
2231                                            Button::new("dismiss-feedback-message", "Cancel")
2232                                                .label_size(LabelSize::Small)
2233                                                .key_binding(
2234                                                    KeyBinding::for_action_in(
2235                                                        &menu::Cancel,
2236                                                        &focus_handle,
2237                                                        window,
2238                                                        cx,
2239                                                    )
2240                                                    .map(|kb| kb.size(rems_from_px(10.))),
2241                                                )
2242                                                .on_click(cx.listener(
2243                                                    move |this, _, _window, cx| {
2244                                                        this.open_feedback_editors
2245                                                            .remove(&message_id);
2246                                                        cx.notify();
2247                                                    },
2248                                                )),
2249                                        )
2250                                        .child(
2251                                            Button::new(
2252                                                "submit-feedback-message",
2253                                                "Share Feedback",
2254                                            )
2255                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2256                                            .label_size(LabelSize::Small)
2257                                            .key_binding(
2258                                                KeyBinding::for_action_in(
2259                                                    &menu::Confirm,
2260                                                    &focus_handle,
2261                                                    window,
2262                                                    cx,
2263                                                )
2264                                                .map(|kb| kb.size(rems_from_px(10.))),
2265                                            )
2266                                            .on_click(
2267                                                cx.listener(move |this, _, _window, cx| {
2268                                                    this.submit_feedback_message(message_id, cx);
2269                                                    cx.notify()
2270                                                }),
2271                                            ),
2272                                        ),
2273                                ),
2274                        )
2275                    },
2276                )
2277            })
2278            .when(after_editing_message, |parent| {
2279                // Backdrop to dim out the whole thread below the editing user message
2280                parent.relative().child(backdrop)
2281            })
2282            .into_any()
2283    }
2284
2285    fn render_message_content(
2286        &self,
2287        message_id: MessageId,
2288        rendered_message: &RenderedMessage,
2289        has_tool_uses: bool,
2290        workspace: WeakEntity<Workspace>,
2291        window: &Window,
2292        cx: &Context<Self>,
2293    ) -> impl IntoElement {
2294        let is_last_message = self.messages.last() == Some(&message_id);
2295        let is_generating = self.thread.read(cx).is_generating();
2296        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2297            rendered_message
2298                .segments
2299                .iter()
2300                .enumerate()
2301                .next_back()
2302                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2303                .map(|(index, _)| index)
2304        } else {
2305            None
2306        };
2307
2308        let message_role = self
2309            .thread
2310            .read(cx)
2311            .message(message_id)
2312            .map(|m| m.role)
2313            .unwrap_or(Role::User);
2314
2315        let is_assistant_message = message_role == Role::Assistant;
2316        let is_user_message = message_role == Role::User;
2317
2318        v_flex()
2319            .text_ui(cx)
2320            .gap_2()
2321            .when(is_user_message, |this| this.text_xs())
2322            .children(
2323                rendered_message.segments.iter().enumerate().map(
2324                    |(index, segment)| match segment {
2325                        RenderedMessageSegment::Thinking {
2326                            content,
2327                            scroll_handle,
2328                        } => self
2329                            .render_message_thinking_segment(
2330                                message_id,
2331                                index,
2332                                content.clone(),
2333                                &scroll_handle,
2334                                Some(index) == pending_thinking_segment_index,
2335                                window,
2336                                cx,
2337                            )
2338                            .into_any_element(),
2339                        RenderedMessageSegment::Text(markdown) => {
2340                            let markdown_element = MarkdownElement::new(
2341                                markdown.clone(),
2342                                if is_user_message {
2343                                    let mut style = default_markdown_style(window, cx);
2344                                    let mut text_style = window.text_style();
2345                                    let theme_settings = ThemeSettings::get_global(cx);
2346
2347                                    let buffer_font = theme_settings.buffer_font.family.clone();
2348                                    let buffer_font_size = TextSize::Small.rems(cx);
2349
2350                                    text_style.refine(&TextStyleRefinement {
2351                                        font_family: Some(buffer_font),
2352                                        font_size: Some(buffer_font_size.into()),
2353                                        ..Default::default()
2354                                    });
2355
2356                                    style.base_text_style = text_style;
2357                                    style
2358                                } else {
2359                                    default_markdown_style(window, cx)
2360                                },
2361                            );
2362
2363                            let markdown_element = if is_assistant_message {
2364                                markdown_element.code_block_renderer(
2365                                    markdown::CodeBlockRenderer::Custom {
2366                                        render: Arc::new({
2367                                            let workspace = workspace.clone();
2368                                            let active_thread = cx.entity();
2369                                            move |kind,
2370                                                  parsed_markdown,
2371                                                  range,
2372                                                  metadata,
2373                                                  window,
2374                                                  cx| {
2375                                                render_markdown_code_block(
2376                                                    message_id,
2377                                                    range.start,
2378                                                    kind,
2379                                                    parsed_markdown,
2380                                                    metadata,
2381                                                    active_thread.clone(),
2382                                                    workspace.clone(),
2383                                                    window,
2384                                                    cx,
2385                                                )
2386                                            }
2387                                        }),
2388                                        transform: Some(Arc::new({
2389                                            let active_thread = cx.entity();
2390
2391                                            move |element, range, _, _, cx| {
2392                                                let is_expanded = active_thread
2393                                                    .read(cx)
2394                                                    .is_codeblock_expanded(message_id, range.start);
2395
2396                                                if is_expanded {
2397                                                    return element;
2398                                                }
2399
2400                                                element
2401                                            }
2402                                        })),
2403                                    },
2404                                )
2405                            } else {
2406                                markdown_element.code_block_renderer(
2407                                    markdown::CodeBlockRenderer::Default {
2408                                        copy_button: false,
2409                                        copy_button_on_hover: false,
2410                                        border: true,
2411                                    },
2412                                )
2413                            };
2414
2415                            div()
2416                                .child(markdown_element.on_url_click({
2417                                    let workspace = self.workspace.clone();
2418                                    move |text, window, cx| {
2419                                        open_markdown_link(text, workspace.clone(), window, cx);
2420                                    }
2421                                }))
2422                                .into_any_element()
2423                        }
2424                    },
2425                ),
2426            )
2427    }
2428
2429    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2430        cx.theme().colors().border.opacity(0.5)
2431    }
2432
2433    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2434        cx.theme()
2435            .colors()
2436            .element_background
2437            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2438    }
2439
2440    fn render_message_thinking_segment(
2441        &self,
2442        message_id: MessageId,
2443        ix: usize,
2444        markdown: Entity<Markdown>,
2445        scroll_handle: &ScrollHandle,
2446        pending: bool,
2447        window: &Window,
2448        cx: &Context<Self>,
2449    ) -> impl IntoElement {
2450        let is_open = self
2451            .expanded_thinking_segments
2452            .get(&(message_id, ix))
2453            .copied()
2454            .unwrap_or_default();
2455
2456        let editor_bg = cx.theme().colors().panel_background;
2457
2458        div().map(|this| {
2459            if pending {
2460                this.v_flex()
2461                    .mt_neg_2()
2462                    .mb_1p5()
2463                    .child(
2464                        h_flex()
2465                            .group("disclosure-header")
2466                            .justify_between()
2467                            .child(
2468                                h_flex()
2469                                    .gap_1p5()
2470                                    .child(
2471                                        Icon::new(IconName::LightBulb)
2472                                            .size(IconSize::XSmall)
2473                                            .color(Color::Muted),
2474                                    )
2475                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2476                            )
2477                            .child(
2478                                h_flex()
2479                                    .gap_1()
2480                                    .child(
2481                                        div().visible_on_hover("disclosure-header").child(
2482                                            Disclosure::new("thinking-disclosure", is_open)
2483                                                .opened_icon(IconName::ChevronUp)
2484                                                .closed_icon(IconName::ChevronDown)
2485                                                .on_click(cx.listener({
2486                                                    move |this, _event, _window, _cx| {
2487                                                        let is_open = this
2488                                                            .expanded_thinking_segments
2489                                                            .entry((message_id, ix))
2490                                                            .or_insert(false);
2491
2492                                                        *is_open = !*is_open;
2493                                                    }
2494                                                })),
2495                                        ),
2496                                    )
2497                                    .child({
2498                                        Icon::new(IconName::ArrowCircle)
2499                                            .color(Color::Accent)
2500                                            .size(IconSize::Small)
2501                                            .with_animation(
2502                                                "arrow-circle",
2503                                                Animation::new(Duration::from_secs(2)).repeat(),
2504                                                |icon, delta| {
2505                                                    icon.transform(Transformation::rotate(
2506                                                        percentage(delta),
2507                                                    ))
2508                                                },
2509                                            )
2510                                    }),
2511                            ),
2512                    )
2513                    .when(!is_open, |this| {
2514                        let gradient_overlay = div()
2515                            .rounded_b_lg()
2516                            .h_full()
2517                            .absolute()
2518                            .w_full()
2519                            .bottom_0()
2520                            .left_0()
2521                            .bg(linear_gradient(
2522                                180.,
2523                                linear_color_stop(editor_bg, 1.),
2524                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2525                            ));
2526
2527                        this.child(
2528                            div()
2529                                .relative()
2530                                .bg(editor_bg)
2531                                .rounded_b_lg()
2532                                .mt_2()
2533                                .pl_4()
2534                                .child(
2535                                    div()
2536                                        .id(("thinking-content", ix))
2537                                        .max_h_20()
2538                                        .track_scroll(scroll_handle)
2539                                        .text_ui_sm(cx)
2540                                        .overflow_hidden()
2541                                        .child(
2542                                            MarkdownElement::new(
2543                                                markdown.clone(),
2544                                                default_markdown_style(window, cx),
2545                                            )
2546                                            .on_url_click({
2547                                                let workspace = self.workspace.clone();
2548                                                move |text, window, cx| {
2549                                                    open_markdown_link(
2550                                                        text,
2551                                                        workspace.clone(),
2552                                                        window,
2553                                                        cx,
2554                                                    );
2555                                                }
2556                                            }),
2557                                        ),
2558                                )
2559                                .child(gradient_overlay),
2560                        )
2561                    })
2562                    .when(is_open, |this| {
2563                        this.child(
2564                            div()
2565                                .id(("thinking-content", ix))
2566                                .h_full()
2567                                .bg(editor_bg)
2568                                .text_ui_sm(cx)
2569                                .child(
2570                                    MarkdownElement::new(
2571                                        markdown.clone(),
2572                                        default_markdown_style(window, cx),
2573                                    )
2574                                    .on_url_click({
2575                                        let workspace = self.workspace.clone();
2576                                        move |text, window, cx| {
2577                                            open_markdown_link(text, workspace.clone(), window, cx);
2578                                        }
2579                                    }),
2580                                ),
2581                        )
2582                    })
2583            } else {
2584                this.v_flex()
2585                    .mt_neg_2()
2586                    .child(
2587                        h_flex()
2588                            .group("disclosure-header")
2589                            .pr_1()
2590                            .justify_between()
2591                            .opacity(0.8)
2592                            .hover(|style| style.opacity(1.))
2593                            .child(
2594                                h_flex()
2595                                    .gap_1p5()
2596                                    .child(
2597                                        Icon::new(IconName::LightBulb)
2598                                            .size(IconSize::XSmall)
2599                                            .color(Color::Muted),
2600                                    )
2601                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2602                            )
2603                            .child(
2604                                div().visible_on_hover("disclosure-header").child(
2605                                    Disclosure::new("thinking-disclosure", is_open)
2606                                        .opened_icon(IconName::ChevronUp)
2607                                        .closed_icon(IconName::ChevronDown)
2608                                        .on_click(cx.listener({
2609                                            move |this, _event, _window, _cx| {
2610                                                let is_open = this
2611                                                    .expanded_thinking_segments
2612                                                    .entry((message_id, ix))
2613                                                    .or_insert(false);
2614
2615                                                *is_open = !*is_open;
2616                                            }
2617                                        })),
2618                                ),
2619                            ),
2620                    )
2621                    .child(
2622                        div()
2623                            .id(("thinking-content", ix))
2624                            .relative()
2625                            .mt_1p5()
2626                            .ml_1p5()
2627                            .pl_2p5()
2628                            .border_l_1()
2629                            .border_color(cx.theme().colors().border_variant)
2630                            .text_ui_sm(cx)
2631                            .when(is_open, |this| {
2632                                this.child(
2633                                    MarkdownElement::new(
2634                                        markdown.clone(),
2635                                        default_markdown_style(window, cx),
2636                                    )
2637                                    .on_url_click({
2638                                        let workspace = self.workspace.clone();
2639                                        move |text, window, cx| {
2640                                            open_markdown_link(text, workspace.clone(), window, cx);
2641                                        }
2642                                    }),
2643                                )
2644                            }),
2645                    )
2646            }
2647        })
2648    }
2649
2650    fn render_tool_use(
2651        &self,
2652        tool_use: ToolUse,
2653        window: &mut Window,
2654        workspace: WeakEntity<Workspace>,
2655        cx: &mut Context<Self>,
2656    ) -> impl IntoElement + use<> {
2657        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2658            return card.render(&tool_use.status, window, workspace, cx);
2659        }
2660
2661        let is_open = self
2662            .expanded_tool_uses
2663            .get(&tool_use.id)
2664            .copied()
2665            .unwrap_or_default();
2666
2667        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2668
2669        let fs = self
2670            .workspace
2671            .upgrade()
2672            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2673        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2674        let needs_confirmation_tools = tool_use.needs_confirmation;
2675
2676        let status_icons = div().child(match &tool_use.status {
2677            ToolUseStatus::NeedsConfirmation => {
2678                let icon = Icon::new(IconName::Warning)
2679                    .color(Color::Warning)
2680                    .size(IconSize::Small);
2681                icon.into_any_element()
2682            }
2683            ToolUseStatus::Pending
2684            | ToolUseStatus::InputStillStreaming
2685            | ToolUseStatus::Running => {
2686                let icon = Icon::new(IconName::ArrowCircle)
2687                    .color(Color::Accent)
2688                    .size(IconSize::Small);
2689                icon.with_animation(
2690                    "arrow-circle",
2691                    Animation::new(Duration::from_secs(2)).repeat(),
2692                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2693                )
2694                .into_any_element()
2695            }
2696            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2697            ToolUseStatus::Error(_) => {
2698                let icon = Icon::new(IconName::Close)
2699                    .color(Color::Error)
2700                    .size(IconSize::Small);
2701                icon.into_any_element()
2702            }
2703        });
2704
2705        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2706        let results_content_container = || v_flex().p_2().gap_0p5();
2707
2708        let results_content = v_flex()
2709            .gap_1()
2710            .child(
2711                results_content_container()
2712                    .child(
2713                        Label::new("Input")
2714                            .size(LabelSize::XSmall)
2715                            .color(Color::Muted)
2716                            .buffer_font(cx),
2717                    )
2718                    .child(
2719                        div()
2720                            .w_full()
2721                            .text_ui_sm(cx)
2722                            .children(rendered_tool_use.as_ref().map(|rendered| {
2723                                MarkdownElement::new(
2724                                    rendered.input.clone(),
2725                                    tool_use_markdown_style(window, cx),
2726                                )
2727                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2728                                    copy_button: false,
2729                                    copy_button_on_hover: false,
2730                                    border: false,
2731                                })
2732                                .on_url_click({
2733                                    let workspace = self.workspace.clone();
2734                                    move |text, window, cx| {
2735                                        open_markdown_link(text, workspace.clone(), window, cx);
2736                                    }
2737                                })
2738                            })),
2739                    ),
2740            )
2741            .map(|container| match tool_use.status {
2742                ToolUseStatus::Finished(_) => container.child(
2743                    results_content_container()
2744                        .border_t_1()
2745                        .border_color(self.tool_card_border_color(cx))
2746                        .child(
2747                            Label::new("Result")
2748                                .size(LabelSize::XSmall)
2749                                .color(Color::Muted)
2750                                .buffer_font(cx),
2751                        )
2752                        .child(div().w_full().text_ui_sm(cx).children(
2753                            rendered_tool_use.as_ref().map(|rendered| {
2754                                MarkdownElement::new(
2755                                    rendered.output.clone(),
2756                                    tool_use_markdown_style(window, cx),
2757                                )
2758                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2759                                    copy_button: false,
2760                                    copy_button_on_hover: false,
2761                                    border: false,
2762                                })
2763                                .on_url_click({
2764                                    let workspace = self.workspace.clone();
2765                                    move |text, window, cx| {
2766                                        open_markdown_link(text, workspace.clone(), window, cx);
2767                                    }
2768                                })
2769                                .into_any_element()
2770                            }),
2771                        )),
2772                ),
2773                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2774                    results_content_container()
2775                        .border_t_1()
2776                        .border_color(self.tool_card_border_color(cx))
2777                        .child(
2778                            h_flex()
2779                                .gap_1()
2780                                .child(
2781                                    Icon::new(IconName::ArrowCircle)
2782                                        .size(IconSize::Small)
2783                                        .color(Color::Accent)
2784                                        .with_animation(
2785                                            "arrow-circle",
2786                                            Animation::new(Duration::from_secs(2)).repeat(),
2787                                            |icon, delta| {
2788                                                icon.transform(Transformation::rotate(percentage(
2789                                                    delta,
2790                                                )))
2791                                            },
2792                                        ),
2793                                )
2794                                .child(
2795                                    Label::new("Running…")
2796                                        .size(LabelSize::XSmall)
2797                                        .color(Color::Muted)
2798                                        .buffer_font(cx),
2799                                ),
2800                        ),
2801                ),
2802                ToolUseStatus::Error(_) => container.child(
2803                    results_content_container()
2804                        .border_t_1()
2805                        .border_color(self.tool_card_border_color(cx))
2806                        .child(
2807                            Label::new("Error")
2808                                .size(LabelSize::XSmall)
2809                                .color(Color::Muted)
2810                                .buffer_font(cx),
2811                        )
2812                        .child(
2813                            div()
2814                                .text_ui_sm(cx)
2815                                .children(rendered_tool_use.as_ref().map(|rendered| {
2816                                    MarkdownElement::new(
2817                                        rendered.output.clone(),
2818                                        tool_use_markdown_style(window, cx),
2819                                    )
2820                                    .on_url_click({
2821                                        let workspace = self.workspace.clone();
2822                                        move |text, window, cx| {
2823                                            open_markdown_link(text, workspace.clone(), window, cx);
2824                                        }
2825                                    })
2826                                    .into_any_element()
2827                                })),
2828                        ),
2829                ),
2830                ToolUseStatus::Pending => container,
2831                ToolUseStatus::NeedsConfirmation => container.child(
2832                    results_content_container()
2833                        .border_t_1()
2834                        .border_color(self.tool_card_border_color(cx))
2835                        .child(
2836                            Label::new("Asking Permission")
2837                                .size(LabelSize::Small)
2838                                .color(Color::Muted)
2839                                .buffer_font(cx),
2840                        ),
2841                ),
2842            });
2843
2844        let gradient_overlay = |color: Hsla| {
2845            div()
2846                .h_full()
2847                .absolute()
2848                .w_12()
2849                .bottom_0()
2850                .map(|element| {
2851                    if is_status_finished {
2852                        element.right_6()
2853                    } else {
2854                        element.right(px(44.))
2855                    }
2856                })
2857                .bg(linear_gradient(
2858                    90.,
2859                    linear_color_stop(color, 1.),
2860                    linear_color_stop(color.opacity(0.2), 0.),
2861                ))
2862        };
2863
2864        v_flex().gap_1().mb_2().map(|element| {
2865            if !needs_confirmation_tools {
2866                element.child(
2867                    v_flex()
2868                        .child(
2869                            h_flex()
2870                                .group("disclosure-header")
2871                                .relative()
2872                                .gap_1p5()
2873                                .justify_between()
2874                                .opacity(0.8)
2875                                .hover(|style| style.opacity(1.))
2876                                .when(!is_status_finished, |this| this.pr_2())
2877                                .child(
2878                                    h_flex()
2879                                        .id("tool-label-container")
2880                                        .gap_1p5()
2881                                        .max_w_full()
2882                                        .overflow_x_scroll()
2883                                        .child(
2884                                            Icon::new(tool_use.icon)
2885                                                .size(IconSize::XSmall)
2886                                                .color(Color::Muted),
2887                                        )
2888                                        .child(
2889                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2890                                                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| {
2891                                                    open_markdown_link(text, workspace.clone(), window, cx);
2892                                                }}))
2893                                            ),
2894                                        ),
2895                                )
2896                                .child(
2897                                    h_flex()
2898                                        .gap_1()
2899                                        .child(
2900                                            div().visible_on_hover("disclosure-header").child(
2901                                                Disclosure::new("tool-use-disclosure", is_open)
2902                                                    .opened_icon(IconName::ChevronUp)
2903                                                    .closed_icon(IconName::ChevronDown)
2904                                                    .on_click(cx.listener({
2905                                                        let tool_use_id = tool_use.id.clone();
2906                                                        move |this, _event, _window, _cx| {
2907                                                            let is_open = this
2908                                                                .expanded_tool_uses
2909                                                                .entry(tool_use_id.clone())
2910                                                                .or_insert(false);
2911
2912                                                            *is_open = !*is_open;
2913                                                        }
2914                                                    })),
2915                                            ),
2916                                        )
2917                                        .child(status_icons),
2918                                )
2919                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2920                        )
2921                        .map(|parent| {
2922                            if !is_open {
2923                                return parent;
2924                            }
2925
2926                            parent.child(
2927                                v_flex()
2928                                    .mt_1()
2929                                    .border_1()
2930                                    .border_color(self.tool_card_border_color(cx))
2931                                    .bg(cx.theme().colors().editor_background)
2932                                    .rounded_lg()
2933                                    .child(results_content),
2934                            )
2935                        }),
2936                )
2937            } else {
2938                v_flex()
2939                    .mb_2()
2940                    .rounded_lg()
2941                    .border_1()
2942                    .border_color(self.tool_card_border_color(cx))
2943                    .overflow_hidden()
2944                    .child(
2945                        h_flex()
2946                            .group("disclosure-header")
2947                            .relative()
2948                            .justify_between()
2949                            .py_1()
2950                            .map(|element| {
2951                                if is_status_finished {
2952                                    element.pl_2().pr_0p5()
2953                                } else {
2954                                    element.px_2()
2955                                }
2956                            })
2957                            .bg(self.tool_card_header_bg(cx))
2958                            .map(|element| {
2959                                if is_open {
2960                                    element.border_b_1().rounded_t_md()
2961                                } else if needs_confirmation {
2962                                    element.rounded_t_md()
2963                                } else {
2964                                    element.rounded_md()
2965                                }
2966                            })
2967                            .border_color(self.tool_card_border_color(cx))
2968                            .child(
2969                                h_flex()
2970                                    .id("tool-label-container")
2971                                    .gap_1p5()
2972                                    .max_w_full()
2973                                    .overflow_x_scroll()
2974                                    .child(
2975                                        Icon::new(tool_use.icon)
2976                                            .size(IconSize::XSmall)
2977                                            .color(Color::Muted),
2978                                    )
2979                                    .child(
2980                                        h_flex().pr_8().text_ui_sm(cx).children(
2981                                            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| {
2982                                                open_markdown_link(text, workspace.clone(), window, cx);
2983                                            }}))
2984                                        ),
2985                                    ),
2986                            )
2987                            .child(
2988                                h_flex()
2989                                    .gap_1()
2990                                    .child(
2991                                        div().visible_on_hover("disclosure-header").child(
2992                                            Disclosure::new("tool-use-disclosure", is_open)
2993                                                .opened_icon(IconName::ChevronUp)
2994                                                .closed_icon(IconName::ChevronDown)
2995                                                .on_click(cx.listener({
2996                                                    let tool_use_id = tool_use.id.clone();
2997                                                    move |this, _event, _window, _cx| {
2998                                                        let is_open = this
2999                                                            .expanded_tool_uses
3000                                                            .entry(tool_use_id.clone())
3001                                                            .or_insert(false);
3002
3003                                                        *is_open = !*is_open;
3004                                                    }
3005                                                })),
3006                                        ),
3007                                    )
3008                                    .child(status_icons),
3009                            )
3010                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
3011                    )
3012                    .map(|parent| {
3013                        if !is_open {
3014                            return parent;
3015                        }
3016
3017                        parent.child(
3018                            v_flex()
3019                                .bg(cx.theme().colors().editor_background)
3020                                .map(|element| {
3021                                    if  needs_confirmation {
3022                                        element.rounded_none()
3023                                    } else {
3024                                        element.rounded_b_lg()
3025                                    }
3026                                })
3027                                .child(results_content),
3028                        )
3029                    })
3030                    .when(needs_confirmation, |this| {
3031                        this.child(
3032                            h_flex()
3033                                .py_1()
3034                                .pl_2()
3035                                .pr_1()
3036                                .gap_1()
3037                                .justify_between()
3038                                .bg(cx.theme().colors().editor_background)
3039                                .border_t_1()
3040                                .border_color(self.tool_card_border_color(cx))
3041                                .rounded_b_lg()
3042                                .child(
3043                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3044                                )
3045                                .child(
3046                                    h_flex()
3047                                        .gap_0p5()
3048                                        .child({
3049                                            let tool_id = tool_use.id.clone();
3050                                            Button::new(
3051                                                "always-allow-tool-action",
3052                                                "Always Allow",
3053                                            )
3054                                            .label_size(LabelSize::Small)
3055                                            .icon(IconName::CheckDouble)
3056                                            .icon_position(IconPosition::Start)
3057                                            .icon_size(IconSize::Small)
3058                                            .icon_color(Color::Success)
3059                                            .tooltip(move |window, cx|  {
3060                                                Tooltip::with_meta(
3061                                                    "Never ask for permission",
3062                                                    None,
3063                                                    "Restore the original behavior in your Agent Panel settings",
3064                                                    window,
3065                                                    cx,
3066                                                )
3067                                            })
3068                                            .on_click(cx.listener(
3069                                                move |this, event, window, cx| {
3070                                                    if let Some(fs) = fs.clone() {
3071                                                        update_settings_file::<AssistantSettings>(
3072                                                            fs.clone(),
3073                                                            cx,
3074                                                            |settings, _| {
3075                                                                settings.set_always_allow_tool_actions(true);
3076                                                            },
3077                                                        );
3078                                                    }
3079                                                    this.handle_allow_tool(
3080                                                        tool_id.clone(),
3081                                                        event,
3082                                                        window,
3083                                                        cx,
3084                                                    )
3085                                                },
3086                                            ))
3087                                        })
3088                                        .child(ui::Divider::vertical())
3089                                        .child({
3090                                            let tool_id = tool_use.id.clone();
3091                                            Button::new("allow-tool-action", "Allow")
3092                                                .label_size(LabelSize::Small)
3093                                                .icon(IconName::Check)
3094                                                .icon_position(IconPosition::Start)
3095                                                .icon_size(IconSize::Small)
3096                                                .icon_color(Color::Success)
3097                                                .on_click(cx.listener(
3098                                                    move |this, event, window, cx| {
3099                                                        this.handle_allow_tool(
3100                                                            tool_id.clone(),
3101                                                            event,
3102                                                            window,
3103                                                            cx,
3104                                                        )
3105                                                    },
3106                                                ))
3107                                        })
3108                                        .child({
3109                                            let tool_id = tool_use.id.clone();
3110                                            let tool_name: Arc<str> = tool_use.name.into();
3111                                            Button::new("deny-tool", "Deny")
3112                                                .label_size(LabelSize::Small)
3113                                                .icon(IconName::Close)
3114                                                .icon_position(IconPosition::Start)
3115                                                .icon_size(IconSize::Small)
3116                                                .icon_color(Color::Error)
3117                                                .on_click(cx.listener(
3118                                                    move |this, event, window, cx| {
3119                                                        this.handle_deny_tool(
3120                                                            tool_id.clone(),
3121                                                            tool_name.clone(),
3122                                                            event,
3123                                                            window,
3124                                                            cx,
3125                                                        )
3126                                                    },
3127                                                ))
3128                                        }),
3129                                ),
3130                        )
3131                    })
3132            }
3133        }).into_any_element()
3134    }
3135
3136    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3137        let project_context = self.thread.read(cx).project_context();
3138        let project_context = project_context.borrow();
3139        let Some(project_context) = project_context.as_ref() else {
3140            return div().into_any();
3141        };
3142
3143        let user_rules_text = if project_context.user_rules.is_empty() {
3144            None
3145        } else if project_context.user_rules.len() == 1 {
3146            let user_rules = &project_context.user_rules[0];
3147
3148            match user_rules.title.as_ref() {
3149                Some(title) => Some(format!("Using \"{title}\" user rule")),
3150                None => Some("Using user rule".into()),
3151            }
3152        } else {
3153            Some(format!(
3154                "Using {} user rules",
3155                project_context.user_rules.len()
3156            ))
3157        };
3158
3159        let first_user_rules_id = project_context
3160            .user_rules
3161            .first()
3162            .map(|user_rules| user_rules.uuid.0);
3163
3164        let rules_files = project_context
3165            .worktrees
3166            .iter()
3167            .filter_map(|worktree| worktree.rules_file.as_ref())
3168            .collect::<Vec<_>>();
3169
3170        let rules_file_text = match rules_files.as_slice() {
3171            &[] => None,
3172            &[rules_file] => Some(format!(
3173                "Using project {:?} file",
3174                rules_file.path_in_worktree
3175            )),
3176            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3177        };
3178
3179        if user_rules_text.is_none() && rules_file_text.is_none() {
3180            return div().into_any();
3181        }
3182
3183        v_flex()
3184            .pt_2()
3185            .px_2p5()
3186            .gap_1()
3187            .when_some(user_rules_text, |parent, user_rules_text| {
3188                parent.child(
3189                    h_flex()
3190                        .w_full()
3191                        .child(
3192                            Icon::new(RULES_ICON)
3193                                .size(IconSize::XSmall)
3194                                .color(Color::Disabled),
3195                        )
3196                        .child(
3197                            Label::new(user_rules_text)
3198                                .size(LabelSize::XSmall)
3199                                .color(Color::Muted)
3200                                .truncate()
3201                                .buffer_font(cx)
3202                                .ml_1p5()
3203                                .mr_0p5(),
3204                        )
3205                        .child(
3206                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3207                                .shape(ui::IconButtonShape::Square)
3208                                .icon_size(IconSize::XSmall)
3209                                .icon_color(Color::Ignored)
3210                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3211                                .tooltip(Tooltip::text("View User Rules"))
3212                                .on_click(move |_event, window, cx| {
3213                                    window.dispatch_action(
3214                                        Box::new(OpenRulesLibrary {
3215                                            prompt_to_select: first_user_rules_id,
3216                                        }),
3217                                        cx,
3218                                    )
3219                                }),
3220                        ),
3221                )
3222            })
3223            .when_some(rules_file_text, |parent, rules_file_text| {
3224                parent.child(
3225                    h_flex()
3226                        .w_full()
3227                        .child(
3228                            Icon::new(IconName::File)
3229                                .size(IconSize::XSmall)
3230                                .color(Color::Disabled),
3231                        )
3232                        .child(
3233                            Label::new(rules_file_text)
3234                                .size(LabelSize::XSmall)
3235                                .color(Color::Muted)
3236                                .buffer_font(cx)
3237                                .ml_1p5()
3238                                .mr_0p5(),
3239                        )
3240                        .child(
3241                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3242                                .shape(ui::IconButtonShape::Square)
3243                                .icon_size(IconSize::XSmall)
3244                                .icon_color(Color::Ignored)
3245                                .on_click(cx.listener(Self::handle_open_rules))
3246                                .tooltip(Tooltip::text("View Rules")),
3247                        ),
3248                )
3249            })
3250            .into_any()
3251    }
3252
3253    fn handle_allow_tool(
3254        &mut self,
3255        tool_use_id: LanguageModelToolUseId,
3256        _: &ClickEvent,
3257        window: &mut Window,
3258        cx: &mut Context<Self>,
3259    ) {
3260        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3261            .thread
3262            .read(cx)
3263            .pending_tool(&tool_use_id)
3264            .map(|tool_use| tool_use.status.clone())
3265        {
3266            self.thread.update(cx, |thread, cx| {
3267                if let Some(configured) = thread.get_or_init_configured_model(cx) {
3268                    thread.run_tool(
3269                        c.tool_use_id.clone(),
3270                        c.ui_text.clone(),
3271                        c.input.clone(),
3272                        c.request.clone(),
3273                        c.tool.clone(),
3274                        configured.model,
3275                        Some(window.window_handle()),
3276                        cx,
3277                    );
3278                }
3279            });
3280        }
3281    }
3282
3283    fn handle_deny_tool(
3284        &mut self,
3285        tool_use_id: LanguageModelToolUseId,
3286        tool_name: Arc<str>,
3287        _: &ClickEvent,
3288        window: &mut Window,
3289        cx: &mut Context<Self>,
3290    ) {
3291        let window_handle = window.window_handle();
3292        self.thread.update(cx, |thread, cx| {
3293            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3294        });
3295    }
3296
3297    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3298        let project_context = self.thread.read(cx).project_context();
3299        let project_context = project_context.borrow();
3300        let Some(project_context) = project_context.as_ref() else {
3301            return;
3302        };
3303
3304        let project_entry_ids = project_context
3305            .worktrees
3306            .iter()
3307            .flat_map(|worktree| worktree.rules_file.as_ref())
3308            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3309            .collect::<Vec<_>>();
3310
3311        self.workspace
3312            .update(cx, move |workspace, cx| {
3313                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3314                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3315                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3316                let project = workspace.project().read(cx);
3317                let project_paths = project_entry_ids
3318                    .into_iter()
3319                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3320                    .collect::<Vec<_>>();
3321                for project_path in project_paths {
3322                    workspace
3323                        .open_path(project_path, None, true, window, cx)
3324                        .detach_and_log_err(cx);
3325                }
3326            })
3327            .ok();
3328    }
3329
3330    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3331        for window in self.notifications.drain(..) {
3332            window
3333                .update(cx, |_, window, _| {
3334                    window.remove_window();
3335                })
3336                .ok();
3337
3338            self.notification_subscriptions.remove(&window);
3339        }
3340    }
3341
3342    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3343        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3344            return None;
3345        }
3346
3347        Some(
3348            div()
3349                .occlude()
3350                .id("active-thread-scrollbar")
3351                .on_mouse_move(cx.listener(|_, _, _, cx| {
3352                    cx.notify();
3353                    cx.stop_propagation()
3354                }))
3355                .on_hover(|_, _, cx| {
3356                    cx.stop_propagation();
3357                })
3358                .on_any_mouse_down(|_, _, cx| {
3359                    cx.stop_propagation();
3360                })
3361                .on_mouse_up(
3362                    MouseButton::Left,
3363                    cx.listener(|_, _, _, cx| {
3364                        cx.stop_propagation();
3365                    }),
3366                )
3367                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3368                    cx.notify();
3369                }))
3370                .h_full()
3371                .absolute()
3372                .right_1()
3373                .top_1()
3374                .bottom_0()
3375                .w(px(12.))
3376                .cursor_default()
3377                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3378        )
3379    }
3380
3381    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3382        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3383        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3384            cx.background_executor()
3385                .timer(SCROLLBAR_SHOW_INTERVAL)
3386                .await;
3387            thread
3388                .update(cx, |thread, cx| {
3389                    if !thread.scrollbar_state.is_dragging() {
3390                        thread.show_scrollbar = false;
3391                        cx.notify();
3392                    }
3393                })
3394                .log_err();
3395        }))
3396    }
3397
3398    pub fn is_codeblock_expanded(&self, message_id: MessageId, ix: usize) -> bool {
3399        self.expanded_code_blocks
3400            .get(&(message_id, ix))
3401            .copied()
3402            .unwrap_or(true)
3403    }
3404
3405    pub fn toggle_codeblock_expanded(&mut self, message_id: MessageId, ix: usize) {
3406        let is_expanded = self
3407            .expanded_code_blocks
3408            .entry((message_id, ix))
3409            .or_insert(true);
3410        *is_expanded = !*is_expanded;
3411    }
3412
3413    pub fn scroll_to_bottom(&mut self, cx: &mut Context<Self>) {
3414        self.list_state.reset(self.messages.len());
3415        cx.notify();
3416    }
3417}
3418
3419pub enum ActiveThreadEvent {
3420    EditingMessageTokenCountChanged,
3421}
3422
3423impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3424
3425impl Render for ActiveThread {
3426    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3427        v_flex()
3428            .size_full()
3429            .relative()
3430            .bg(cx.theme().colors().panel_background)
3431            .on_mouse_move(cx.listener(|this, _, _, cx| {
3432                this.show_scrollbar = true;
3433                this.hide_scrollbar_later(cx);
3434                cx.notify();
3435            }))
3436            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3437                this.show_scrollbar = true;
3438                this.hide_scrollbar_later(cx);
3439                cx.notify();
3440            }))
3441            .on_mouse_up(
3442                MouseButton::Left,
3443                cx.listener(|this, _, _, cx| {
3444                    this.hide_scrollbar_later(cx);
3445                }),
3446            )
3447            .child(list(self.list_state.clone()).flex_grow())
3448            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3449                this.child(scrollbar)
3450            })
3451    }
3452}
3453
3454pub(crate) fn open_active_thread_as_markdown(
3455    thread: Entity<Thread>,
3456    workspace: Entity<Workspace>,
3457    window: &mut Window,
3458    cx: &mut App,
3459) -> Task<anyhow::Result<()>> {
3460    let markdown_language_task = workspace
3461        .read(cx)
3462        .app_state()
3463        .languages
3464        .language_for_name("Markdown");
3465
3466    window.spawn(cx, async move |cx| {
3467        let markdown_language = markdown_language_task.await?;
3468
3469        workspace.update_in(cx, |workspace, window, cx| {
3470            let thread = thread.read(cx);
3471            let markdown = thread.to_markdown(cx)?;
3472            let thread_summary = thread.summary().or_default().to_string();
3473
3474            let project = workspace.project().clone();
3475
3476            if !project.read(cx).is_local() {
3477                anyhow::bail!("failed to open active thread as markdown in remote project");
3478            }
3479
3480            let buffer = project.update(cx, |project, cx| {
3481                project.create_local_buffer(&markdown, Some(markdown_language), cx)
3482            });
3483            let buffer =
3484                cx.new(|cx| MultiBuffer::singleton(buffer, cx).with_title(thread_summary.clone()));
3485
3486            workspace.add_item_to_active_pane(
3487                Box::new(cx.new(|cx| {
3488                    let mut editor =
3489                        Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
3490                    editor.set_breadcrumb_header(thread_summary);
3491                    editor
3492                })),
3493                None,
3494                true,
3495                window,
3496                cx,
3497            );
3498
3499            anyhow::Ok(())
3500        })??;
3501        anyhow::Ok(())
3502    })
3503}
3504
3505pub(crate) fn open_context(
3506    context: &AgentContextHandle,
3507    workspace: Entity<Workspace>,
3508    window: &mut Window,
3509    cx: &mut App,
3510) {
3511    match context {
3512        AgentContextHandle::File(file_context) => {
3513            if let Some(project_path) = file_context.project_path(cx) {
3514                workspace.update(cx, |workspace, cx| {
3515                    workspace
3516                        .open_path(project_path, None, true, window, cx)
3517                        .detach_and_log_err(cx);
3518                });
3519            }
3520        }
3521
3522        AgentContextHandle::Directory(directory_context) => {
3523            let entry_id = directory_context.entry_id;
3524            workspace.update(cx, |workspace, cx| {
3525                workspace.project().update(cx, |_project, cx| {
3526                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3527                })
3528            })
3529        }
3530
3531        AgentContextHandle::Symbol(symbol_context) => {
3532            let buffer = symbol_context.buffer.read(cx);
3533            if let Some(project_path) = buffer.project_path(cx) {
3534                let snapshot = buffer.snapshot();
3535                let target_position = symbol_context.range.start.to_point(&snapshot);
3536                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3537                    .detach();
3538            }
3539        }
3540
3541        AgentContextHandle::Selection(selection_context) => {
3542            let buffer = selection_context.buffer.read(cx);
3543            if let Some(project_path) = buffer.project_path(cx) {
3544                let snapshot = buffer.snapshot();
3545                let target_position = selection_context.range.start.to_point(&snapshot);
3546
3547                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3548                    .detach();
3549            }
3550        }
3551
3552        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3553            cx.open_url(&fetched_url_context.url);
3554        }
3555
3556        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3557            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3558                panel.update(cx, |panel, cx| {
3559                    panel.open_thread(thread_context.thread.clone(), window, cx);
3560                });
3561            }
3562        }),
3563
3564        AgentContextHandle::TextThread(text_thread_context) => {
3565            workspace.update(cx, |workspace, cx| {
3566                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3567                    panel.update(cx, |panel, cx| {
3568                        panel.open_prompt_editor(text_thread_context.context.clone(), window, cx)
3569                    });
3570                }
3571            })
3572        }
3573
3574        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3575            Box::new(OpenRulesLibrary {
3576                prompt_to_select: Some(rules_context.prompt_id.0),
3577            }),
3578            cx,
3579        ),
3580
3581        AgentContextHandle::Image(_) => {}
3582    }
3583}
3584
3585fn open_editor_at_position(
3586    project_path: project::ProjectPath,
3587    target_position: Point,
3588    workspace: &Entity<Workspace>,
3589    window: &mut Window,
3590    cx: &mut App,
3591) -> Task<()> {
3592    let open_task = workspace.update(cx, |workspace, cx| {
3593        workspace.open_path(project_path, None, true, window, cx)
3594    });
3595    window.spawn(cx, async move |cx| {
3596        if let Some(active_editor) = open_task
3597            .await
3598            .log_err()
3599            .and_then(|item| item.downcast::<Editor>())
3600        {
3601            active_editor
3602                .downgrade()
3603                .update_in(cx, |editor, window, cx| {
3604                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3605                })
3606                .log_err();
3607        }
3608    })
3609}
3610
3611#[cfg(test)]
3612mod tests {
3613    use assistant_tool::{ToolRegistry, ToolWorkingSet};
3614    use editor::EditorSettings;
3615    use fs::FakeFs;
3616    use gpui::{AppContext, TestAppContext, VisualTestContext};
3617    use language_model::{LanguageModel, fake_provider::FakeLanguageModel};
3618    use project::Project;
3619    use prompt_store::PromptBuilder;
3620    use serde_json::json;
3621    use settings::SettingsStore;
3622    use util::path;
3623    use workspace::CollaboratorId;
3624
3625    use crate::{ContextLoadResult, thread_store};
3626
3627    use super::*;
3628
3629    #[gpui::test]
3630    async fn test_agent_is_unfollowed_after_cancelling_completion(cx: &mut TestAppContext) {
3631        init_test_settings(cx);
3632
3633        let project = create_test_project(
3634            cx,
3635            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
3636        )
3637        .await;
3638
3639        let (cx, _active_thread, workspace, thread, model) =
3640            setup_test_environment(cx, project.clone()).await;
3641
3642        // Insert user message without any context (empty context vector)
3643        thread.update(cx, |thread, cx| {
3644            thread.insert_user_message(
3645                "What is the best way to learn Rust?",
3646                ContextLoadResult::default(),
3647                None,
3648                vec![],
3649                cx,
3650            );
3651        });
3652
3653        // Stream response to user message
3654        thread.update(cx, |thread, cx| {
3655            let request = thread.to_completion_request(model.clone(), cx);
3656            thread.stream_completion(request, model, cx.active_window(), cx)
3657        });
3658        // Follow the agent
3659        cx.update(|window, cx| {
3660            workspace.update(cx, |workspace, cx| {
3661                workspace.follow(CollaboratorId::Agent, window, cx);
3662            })
3663        });
3664        assert!(cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3665
3666        // Cancel the current completion
3667        thread.update(cx, |thread, cx| {
3668            thread.cancel_last_completion(cx.active_window(), cx)
3669        });
3670
3671        cx.executor().run_until_parked();
3672
3673        // No longer following the agent
3674        assert!(!cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3675    }
3676
3677    fn init_test_settings(cx: &mut TestAppContext) {
3678        cx.update(|cx| {
3679            let settings_store = SettingsStore::test(cx);
3680            cx.set_global(settings_store);
3681            language::init(cx);
3682            Project::init_settings(cx);
3683            AssistantSettings::register(cx);
3684            prompt_store::init(cx);
3685            thread_store::init(cx);
3686            workspace::init_settings(cx);
3687            language_model::init_settings(cx);
3688            ThemeSettings::register(cx);
3689            EditorSettings::register(cx);
3690            ToolRegistry::default_global(cx);
3691        });
3692    }
3693
3694    // Helper to create a test project with test files
3695    async fn create_test_project(
3696        cx: &mut TestAppContext,
3697        files: serde_json::Value,
3698    ) -> Entity<Project> {
3699        let fs = FakeFs::new(cx.executor());
3700        fs.insert_tree(path!("/test"), files).await;
3701        Project::test(fs, [path!("/test").as_ref()], cx).await
3702    }
3703
3704    async fn setup_test_environment(
3705        cx: &mut TestAppContext,
3706        project: Entity<Project>,
3707    ) -> (
3708        &mut VisualTestContext,
3709        Entity<ActiveThread>,
3710        Entity<Workspace>,
3711        Entity<Thread>,
3712        Arc<dyn LanguageModel>,
3713    ) {
3714        let (workspace, cx) =
3715            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
3716
3717        let thread_store = cx
3718            .update(|_, cx| {
3719                ThreadStore::load(
3720                    project.clone(),
3721                    cx.new(|_| ToolWorkingSet::default()),
3722                    None,
3723                    Arc::new(PromptBuilder::new(None).unwrap()),
3724                    cx,
3725                )
3726            })
3727            .await
3728            .unwrap();
3729
3730        let text_thread_store = cx
3731            .update(|_, cx| {
3732                TextThreadStore::new(
3733                    project.clone(),
3734                    Arc::new(PromptBuilder::new(None).unwrap()),
3735                    Default::default(),
3736                    cx,
3737                )
3738            })
3739            .await
3740            .unwrap();
3741
3742        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
3743        let context_store =
3744            cx.new(|_cx| ContextStore::new(project.downgrade(), Some(thread_store.downgrade())));
3745
3746        let model = FakeLanguageModel::default();
3747        let model: Arc<dyn LanguageModel> = Arc::new(model);
3748
3749        let language_registry = LanguageRegistry::new(cx.executor());
3750        let language_registry = Arc::new(language_registry);
3751
3752        let active_thread = cx.update(|window, cx| {
3753            cx.new(|cx| {
3754                ActiveThread::new(
3755                    thread.clone(),
3756                    thread_store.clone(),
3757                    text_thread_store,
3758                    context_store.clone(),
3759                    language_registry.clone(),
3760                    workspace.downgrade(),
3761                    window,
3762                    cx,
3763                )
3764            })
3765        });
3766
3767        (cx, active_thread, workspace, thread, model)
3768    }
3769}