active_thread.rs

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