active_thread.rs

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