active_thread.rs

   1use crate::context::{AgentContextHandle, RULES_ICON};
   2use crate::context_picker::MentionLink;
   3use crate::thread::{
   4    LastRestoreCheckpoint, MessageId, MessageSegment, Thread, ThreadError, ThreadEvent,
   5    ThreadFeedback,
   6};
   7use crate::thread_store::{RulesLoadingError, ThreadStore};
   8use crate::tool_use::{PendingToolUseStatus, ToolUse};
   9use crate::ui::{
  10    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
  11};
  12use crate::{AssistantPanel, OpenActiveThreadAsMarkdown};
  13use anyhow::Context as _;
  14use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
  15use assistant_tool::ToolUseStatus;
  16use collections::{HashMap, HashSet};
  17use editor::scroll::Autoscroll;
  18use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer};
  19use gpui::{
  20    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardItem,
  21    DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla, ListAlignment,
  22    ListState, MouseButton, PlatformDisplay, ScrollHandle, Stateful, StyleRefinement, Subscription,
  23    Task, TextStyle, TextStyleRefinement, Transformation, UnderlineStyle, WeakEntity, WindowHandle,
  24    linear_color_stop, linear_gradient, list, percentage, pulsating_between,
  25};
  26use language::{Buffer, LanguageRegistry};
  27use language_model::{
  28    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, RequestUsage, Role,
  29    StopReason,
  30};
  31use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  32use markdown::{HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
  33use project::{ProjectEntryId, ProjectItem as _};
  34use rope::Point;
  35use settings::{Settings as _, update_settings_file};
  36use std::path::Path;
  37use std::rc::Rc;
  38use std::sync::Arc;
  39use std::time::Duration;
  40use text::ToPoint;
  41use theme::ThemeSettings;
  42use ui::{
  43    Disclosure, IconButton, KeyBinding, Scrollbar, ScrollbarState, TextSize, Tooltip, prelude::*,
  44};
  45use util::ResultExt as _;
  46use util::markdown::MarkdownCodeBlock;
  47use workspace::Workspace;
  48use zed_actions::assistant::OpenRulesLibrary;
  49
  50pub struct ActiveThread {
  51    language_registry: Arc<LanguageRegistry>,
  52    thread_store: Entity<ThreadStore>,
  53    thread: Entity<Thread>,
  54    workspace: WeakEntity<Workspace>,
  55    save_thread_task: Option<Task<()>>,
  56    messages: Vec<MessageId>,
  57    list_state: ListState,
  58    scrollbar_state: ScrollbarState,
  59    show_scrollbar: bool,
  60    hide_scrollbar_task: Option<Task<()>>,
  61    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  62    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  63    editing_message: Option<(MessageId, EditMessageState)>,
  64    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  65    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  66    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  67    last_error: Option<ThreadError>,
  68    last_usage: Option<RequestUsage>,
  69    notifications: Vec<WindowHandle<AgentNotification>>,
  70    copied_code_block_ids: HashSet<(MessageId, usize)>,
  71    _subscriptions: Vec<Subscription>,
  72    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  73    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  74}
  75
  76struct RenderedMessage {
  77    language_registry: Arc<LanguageRegistry>,
  78    segments: Vec<RenderedMessageSegment>,
  79}
  80
  81#[derive(Clone)]
  82struct RenderedToolUse {
  83    label: Entity<Markdown>,
  84    input: Entity<Markdown>,
  85    output: Entity<Markdown>,
  86}
  87
  88impl RenderedMessage {
  89    fn from_segments(
  90        segments: &[MessageSegment],
  91        language_registry: Arc<LanguageRegistry>,
  92        cx: &mut App,
  93    ) -> Self {
  94        let mut this = Self {
  95            language_registry,
  96            segments: Vec::with_capacity(segments.len()),
  97        };
  98        for segment in segments {
  99            this.push_segment(segment, cx);
 100        }
 101        this
 102    }
 103
 104    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 105        if let Some(RenderedMessageSegment::Thinking {
 106            content,
 107            scroll_handle,
 108        }) = self.segments.last_mut()
 109        {
 110            content.update(cx, |markdown, cx| {
 111                markdown.append(text, cx);
 112            });
 113            scroll_handle.scroll_to_bottom();
 114        } else {
 115            self.segments.push(RenderedMessageSegment::Thinking {
 116                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 117                scroll_handle: ScrollHandle::default(),
 118            });
 119        }
 120    }
 121
 122    fn append_text(&mut self, text: &String, cx: &mut App) {
 123        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 124            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 125        } else {
 126            self.segments
 127                .push(RenderedMessageSegment::Text(parse_markdown(
 128                    SharedString::from(text),
 129                    self.language_registry.clone(),
 130                    cx,
 131                )));
 132        }
 133    }
 134
 135    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 136        match segment {
 137            MessageSegment::Thinking { text, .. } => {
 138                self.segments.push(RenderedMessageSegment::Thinking {
 139                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 140                    scroll_handle: ScrollHandle::default(),
 141                })
 142            }
 143            MessageSegment::Text(text) => {
 144                self.segments
 145                    .push(RenderedMessageSegment::Text(parse_markdown(
 146                        text.into(),
 147                        self.language_registry.clone(),
 148                        cx,
 149                    )))
 150            }
 151            MessageSegment::RedactedThinking(_) => {}
 152        };
 153    }
 154}
 155
 156enum RenderedMessageSegment {
 157    Thinking {
 158        content: Entity<Markdown>,
 159        scroll_handle: ScrollHandle,
 160    },
 161    Text(Entity<Markdown>),
 162}
 163
 164fn parse_markdown(
 165    text: SharedString,
 166    language_registry: Arc<LanguageRegistry>,
 167    cx: &mut App,
 168) -> Entity<Markdown> {
 169    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 170}
 171
 172fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 173    let theme_settings = ThemeSettings::get_global(cx);
 174    let colors = cx.theme().colors();
 175    let ui_font_size = TextSize::Default.rems(cx);
 176    let buffer_font_size = TextSize::Small.rems(cx);
 177    let mut text_style = window.text_style();
 178
 179    text_style.refine(&TextStyleRefinement {
 180        font_family: Some(theme_settings.ui_font.family.clone()),
 181        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 182        font_features: Some(theme_settings.ui_font.features.clone()),
 183        font_size: Some(ui_font_size.into()),
 184        color: Some(cx.theme().colors().text),
 185        ..Default::default()
 186    });
 187
 188    MarkdownStyle {
 189        base_text_style: text_style.clone(),
 190        syntax: cx.theme().syntax().clone(),
 191        selection_background_color: cx.theme().players().local().selection,
 192        code_block_overflow_x_scroll: true,
 193        table_overflow_x_scroll: true,
 194        heading_level_styles: Some(HeadingLevelStyles {
 195            h1: Some(TextStyleRefinement {
 196                font_size: Some(rems(1.15).into()),
 197                ..Default::default()
 198            }),
 199            h2: Some(TextStyleRefinement {
 200                font_size: Some(rems(1.1).into()),
 201                ..Default::default()
 202            }),
 203            h3: Some(TextStyleRefinement {
 204                font_size: Some(rems(1.05).into()),
 205                ..Default::default()
 206            }),
 207            h4: Some(TextStyleRefinement {
 208                font_size: Some(rems(1.).into()),
 209                ..Default::default()
 210            }),
 211            h5: Some(TextStyleRefinement {
 212                font_size: Some(rems(0.95).into()),
 213                ..Default::default()
 214            }),
 215            h6: Some(TextStyleRefinement {
 216                font_size: Some(rems(0.875).into()),
 217                ..Default::default()
 218            }),
 219        }),
 220        code_block: StyleRefinement {
 221            padding: EdgesRefinement {
 222                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 223                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 224                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 225                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 226            },
 227            background: Some(colors.editor_background.into()),
 228            text: Some(TextStyleRefinement {
 229                font_family: Some(theme_settings.buffer_font.family.clone()),
 230                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 231                font_features: Some(theme_settings.buffer_font.features.clone()),
 232                font_size: Some(buffer_font_size.into()),
 233                ..Default::default()
 234            }),
 235            ..Default::default()
 236        },
 237        inline_code: TextStyleRefinement {
 238            font_family: Some(theme_settings.buffer_font.family.clone()),
 239            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 240            font_features: Some(theme_settings.buffer_font.features.clone()),
 241            font_size: Some(buffer_font_size.into()),
 242            background_color: Some(colors.editor_foreground.opacity(0.08)),
 243            ..Default::default()
 244        },
 245        link: TextStyleRefinement {
 246            background_color: Some(colors.editor_foreground.opacity(0.025)),
 247            underline: Some(UnderlineStyle {
 248                color: Some(colors.text_accent.opacity(0.5)),
 249                thickness: px(1.),
 250                ..Default::default()
 251            }),
 252            ..Default::default()
 253        },
 254        link_callback: Some(Rc::new(move |url, cx| {
 255            if MentionLink::is_valid(url) {
 256                let colors = cx.theme().colors();
 257                Some(TextStyleRefinement {
 258                    background_color: Some(colors.element_background),
 259                    ..Default::default()
 260                })
 261            } else {
 262                None
 263            }
 264        })),
 265        ..Default::default()
 266    }
 267}
 268
 269fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 270    let theme_settings = ThemeSettings::get_global(cx);
 271    let colors = cx.theme().colors();
 272    let ui_font_size = TextSize::Default.rems(cx);
 273    let buffer_font_size = TextSize::Small.rems(cx);
 274    let mut text_style = window.text_style();
 275
 276    text_style.refine(&TextStyleRefinement {
 277        font_family: Some(theme_settings.ui_font.family.clone()),
 278        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 279        font_features: Some(theme_settings.ui_font.features.clone()),
 280        font_size: Some(ui_font_size.into()),
 281        color: Some(cx.theme().colors().text),
 282        ..Default::default()
 283    });
 284
 285    MarkdownStyle {
 286        base_text_style: text_style,
 287        syntax: cx.theme().syntax().clone(),
 288        selection_background_color: cx.theme().players().local().selection,
 289        code_block_overflow_x_scroll: true,
 290        code_block: StyleRefinement {
 291            margin: EdgesRefinement::default(),
 292            padding: EdgesRefinement::default(),
 293            background: Some(colors.editor_background.into()),
 294            border_color: None,
 295            border_widths: EdgesRefinement::default(),
 296            text: Some(TextStyleRefinement {
 297                font_family: Some(theme_settings.buffer_font.family.clone()),
 298                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 299                font_features: Some(theme_settings.buffer_font.features.clone()),
 300                font_size: Some(buffer_font_size.into()),
 301                ..Default::default()
 302            }),
 303            ..Default::default()
 304        },
 305        inline_code: TextStyleRefinement {
 306            font_family: Some(theme_settings.buffer_font.family.clone()),
 307            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 308            font_features: Some(theme_settings.buffer_font.features.clone()),
 309            font_size: Some(TextSize::XSmall.rems(cx).into()),
 310            ..Default::default()
 311        },
 312        heading: StyleRefinement {
 313            text: Some(TextStyleRefinement {
 314                font_size: Some(ui_font_size.into()),
 315                ..Default::default()
 316            }),
 317            ..Default::default()
 318        },
 319        ..Default::default()
 320    }
 321}
 322
 323const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 10;
 324
 325fn render_markdown_code_block(
 326    message_id: MessageId,
 327    ix: usize,
 328    kind: &CodeBlockKind,
 329    parsed_markdown: &ParsedMarkdown,
 330    metadata: CodeBlockMetadata,
 331    active_thread: Entity<ActiveThread>,
 332    workspace: WeakEntity<Workspace>,
 333    _window: &Window,
 334    cx: &App,
 335) -> Div {
 336    let label = match kind {
 337        CodeBlockKind::Indented => None,
 338        CodeBlockKind::Fenced => Some(
 339            h_flex()
 340                .gap_1()
 341                .child(
 342                    Icon::new(IconName::Code)
 343                        .color(Color::Muted)
 344                        .size(IconSize::XSmall),
 345                )
 346                .child(Label::new("untitled").size(LabelSize::Small))
 347                .into_any_element(),
 348        ),
 349        CodeBlockKind::FencedLang(raw_language_name) => Some(
 350            h_flex()
 351                .gap_1()
 352                .children(
 353                    parsed_markdown
 354                        .languages_by_name
 355                        .get(raw_language_name)
 356                        .and_then(|language| {
 357                            language
 358                                .config()
 359                                .matcher
 360                                .path_suffixes
 361                                .iter()
 362                                .find_map(|extension| {
 363                                    file_icons::FileIcons::get_icon(Path::new(extension), cx)
 364                                })
 365                                .map(Icon::from_path)
 366                                .map(|icon| icon.color(Color::Muted).size(IconSize::Small))
 367                        }),
 368                )
 369                .child(
 370                    Label::new(
 371                        parsed_markdown
 372                            .languages_by_name
 373                            .get(raw_language_name)
 374                            .map(|language| language.name().into())
 375                            .clone()
 376                            .unwrap_or_else(|| raw_language_name.clone()),
 377                    )
 378                    .size(LabelSize::Small),
 379                )
 380                .into_any_element(),
 381        ),
 382        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 383            let content = if let Some(parent) = path_range.path.parent() {
 384                h_flex()
 385                    .ml_1()
 386                    .gap_1()
 387                    .child(
 388                        Label::new(file_name.to_string_lossy().to_string()).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 =
 451                                        workspace.open_path(project_path, None, true, window, cx);
 452                                    window
 453                                        .spawn(cx, async move |cx| {
 454                                            let item = open_task.await?;
 455                                            if let Some(active_editor) = item.downcast::<Editor>() {
 456                                                active_editor
 457                                                    .update_in(cx, |editor, window, cx| {
 458                                                        editor.go_to_singleton_buffer_point(
 459                                                            target, window, cx,
 460                                                        );
 461                                                    })
 462                                                    .ok();
 463                                            }
 464                                            anyhow::Ok(())
 465                                        })
 466                                        .detach_and_log_err(cx);
 467                                }
 468                            })
 469                            .ok();
 470                    }
 471                })
 472                .into_any_element()
 473        }),
 474    };
 475
 476    let codeblock_was_copied = active_thread
 477        .read(cx)
 478        .copied_code_block_ids
 479        .contains(&(message_id, ix));
 480
 481    let is_expanded = active_thread
 482        .read(cx)
 483        .expanded_code_blocks
 484        .get(&(message_id, ix))
 485        .copied()
 486        .unwrap_or(true);
 487
 488    let codeblock_header_bg = cx
 489        .theme()
 490        .colors()
 491        .element_background
 492        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 493
 494    let codeblock_header = h_flex()
 495        .py_1()
 496        .pl_1p5()
 497        .pr_1()
 498        .gap_1()
 499        .justify_between()
 500        .border_b_1()
 501        .border_color(cx.theme().colors().border.opacity(0.6))
 502        .bg(codeblock_header_bg)
 503        .rounded_t_md()
 504        .children(label)
 505        .child(
 506            h_flex()
 507                .visible_on_hover("codeblock_container")
 508                .gap_1()
 509                .child(
 510                    IconButton::new(
 511                        ("copy-markdown-code", ix),
 512                        if codeblock_was_copied {
 513                            IconName::Check
 514                        } else {
 515                            IconName::Copy
 516                        },
 517                    )
 518                    .icon_color(Color::Muted)
 519                    .shape(ui::IconButtonShape::Square)
 520                    .tooltip(Tooltip::text("Copy Code"))
 521                    .on_click({
 522                        let active_thread = active_thread.clone();
 523                        let parsed_markdown = parsed_markdown.clone();
 524                        let code_block_range = metadata.content_range.clone();
 525                        move |_event, _window, cx| {
 526                            active_thread.update(cx, |this, cx| {
 527                                this.copied_code_block_ids.insert((message_id, ix));
 528
 529                                let code =
 530                                    parsed_markdown.source()[code_block_range.clone()].to_string();
 531                                cx.write_to_clipboard(ClipboardItem::new_string(code));
 532
 533                                cx.spawn(async move |this, cx| {
 534                                    cx.background_executor().timer(Duration::from_secs(2)).await;
 535
 536                                    cx.update(|cx| {
 537                                        this.update(cx, |this, cx| {
 538                                            this.copied_code_block_ids.remove(&(message_id, ix));
 539                                            cx.notify();
 540                                        })
 541                                    })
 542                                    .ok();
 543                                })
 544                                .detach();
 545                            });
 546                        }
 547                    }),
 548                )
 549                .when(
 550                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 551                    |header| {
 552                        header.child(
 553                            IconButton::new(
 554                                ("expand-collapse-code", ix),
 555                                if is_expanded {
 556                                    IconName::ChevronUp
 557                                } else {
 558                                    IconName::ChevronDown
 559                                },
 560                            )
 561                            .icon_color(Color::Muted)
 562                            .shape(ui::IconButtonShape::Square)
 563                            .tooltip(Tooltip::text(if is_expanded {
 564                                "Collapse Code"
 565                            } else {
 566                                "Expand Code"
 567                            }))
 568                            .on_click({
 569                                let active_thread = active_thread.clone();
 570                                move |_event, _window, cx| {
 571                                    active_thread.update(cx, |this, cx| {
 572                                        let is_expanded = this
 573                                            .expanded_code_blocks
 574                                            .entry((message_id, ix))
 575                                            .or_insert(true);
 576                                        *is_expanded = !*is_expanded;
 577                                        cx.notify();
 578                                    });
 579                                }
 580                            }),
 581                        )
 582                    },
 583                ),
 584        );
 585
 586    v_flex()
 587        .group("codeblock_container")
 588        .my_2()
 589        .overflow_hidden()
 590        .rounded_lg()
 591        .border_1()
 592        .border_color(cx.theme().colors().border.opacity(0.6))
 593        .bg(cx.theme().colors().editor_background)
 594        .child(codeblock_header)
 595        .when(
 596            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 597            |this| {
 598                if is_expanded {
 599                    this.h_full()
 600                } else {
 601                    this.max_h_80()
 602                }
 603            },
 604        )
 605}
 606
 607fn open_markdown_link(
 608    text: SharedString,
 609    workspace: WeakEntity<Workspace>,
 610    window: &mut Window,
 611    cx: &mut App,
 612) {
 613    let Some(workspace) = workspace.upgrade() else {
 614        cx.open_url(&text);
 615        return;
 616    };
 617
 618    match MentionLink::try_parse(&text, &workspace, cx) {
 619        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 620            if entry.is_dir() {
 621                workspace.project().update(cx, |_, cx| {
 622                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 623                })
 624            } else {
 625                workspace
 626                    .open_path(path, None, true, window, cx)
 627                    .detach_and_log_err(cx);
 628            }
 629        }),
 630        Some(MentionLink::Symbol(path, symbol_name)) => {
 631            let open_task = workspace.update(cx, |workspace, cx| {
 632                workspace.open_path(path, None, true, window, cx)
 633            });
 634            window
 635                .spawn(cx, async move |cx| {
 636                    let active_editor = open_task
 637                        .await?
 638                        .downcast::<Editor>()
 639                        .context("Item is not an editor")?;
 640                    active_editor.update_in(cx, |editor, window, cx| {
 641                        let symbol_range = editor
 642                            .buffer()
 643                            .read(cx)
 644                            .snapshot(cx)
 645                            .outline(None)
 646                            .and_then(|outline| {
 647                                outline
 648                                    .find_most_similar(&symbol_name)
 649                                    .map(|(_, item)| item.range.clone())
 650                            })
 651                            .context("Could not find matching symbol")?;
 652
 653                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 654                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 655                        });
 656                        anyhow::Ok(())
 657                    })
 658                })
 659                .detach_and_log_err(cx);
 660        }
 661        Some(MentionLink::Selection(path, line_range)) => {
 662            let open_task = workspace.update(cx, |workspace, cx| {
 663                workspace.open_path(path, None, true, window, cx)
 664            });
 665            window
 666                .spawn(cx, async move |cx| {
 667                    let active_editor = open_task
 668                        .await?
 669                        .downcast::<Editor>()
 670                        .context("Item is not an editor")?;
 671                    active_editor.update_in(cx, |editor, window, cx| {
 672                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 673                            s.select_ranges([Point::new(line_range.start as u32, 0)
 674                                ..Point::new(line_range.start as u32, 0)])
 675                        });
 676                        anyhow::Ok(())
 677                    })
 678                })
 679                .detach_and_log_err(cx);
 680        }
 681        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 682            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 683                panel.update(cx, |panel, cx| {
 684                    panel
 685                        .open_thread(&thread_id, window, cx)
 686                        .detach_and_log_err(cx)
 687                });
 688            }
 689        }),
 690        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 691        Some(MentionLink::Rules(prompt_id)) => window.dispatch_action(
 692            Box::new(OpenRulesLibrary {
 693                prompt_to_select: Some(prompt_id.0),
 694            }),
 695            cx,
 696        ),
 697        None => cx.open_url(&text),
 698    }
 699}
 700
 701struct EditMessageState {
 702    editor: Entity<Editor>,
 703    last_estimated_token_count: Option<usize>,
 704    _subscription: Subscription,
 705    _update_token_count_task: Option<Task<()>>,
 706}
 707
 708impl ActiveThread {
 709    pub fn new(
 710        thread: Entity<Thread>,
 711        thread_store: Entity<ThreadStore>,
 712        language_registry: Arc<LanguageRegistry>,
 713        workspace: WeakEntity<Workspace>,
 714        window: &mut Window,
 715        cx: &mut Context<Self>,
 716    ) -> Self {
 717        let subscriptions = vec![
 718            cx.observe(&thread, |_, _, cx| cx.notify()),
 719            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 720            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 721        ];
 722
 723        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 724            let this = cx.entity().downgrade();
 725            move |ix, window: &mut Window, cx: &mut App| {
 726                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 727                    .unwrap()
 728            }
 729        });
 730
 731        let mut this = Self {
 732            language_registry,
 733            thread_store,
 734            thread: thread.clone(),
 735            workspace,
 736            save_thread_task: None,
 737            messages: Vec::new(),
 738            rendered_messages_by_id: HashMap::default(),
 739            rendered_tool_uses: HashMap::default(),
 740            expanded_tool_uses: HashMap::default(),
 741            expanded_thinking_segments: HashMap::default(),
 742            expanded_code_blocks: HashMap::default(),
 743            list_state: list_state.clone(),
 744            scrollbar_state: ScrollbarState::new(list_state),
 745            show_scrollbar: false,
 746            hide_scrollbar_task: None,
 747            editing_message: None,
 748            last_error: None,
 749            last_usage: None,
 750            copied_code_block_ids: HashSet::default(),
 751            notifications: Vec::new(),
 752            _subscriptions: subscriptions,
 753            notification_subscriptions: HashMap::default(),
 754            open_feedback_editors: HashMap::default(),
 755        };
 756
 757        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 758            this.push_message(&message.id, &message.segments, window, cx);
 759
 760            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 761                this.render_tool_use_markdown(
 762                    tool_use.id.clone(),
 763                    tool_use.ui_text.clone(),
 764                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 765                    tool_use.status.text(),
 766                    cx,
 767                );
 768            }
 769        }
 770
 771        this
 772    }
 773
 774    pub fn thread(&self) -> &Entity<Thread> {
 775        &self.thread
 776    }
 777
 778    pub fn is_empty(&self) -> bool {
 779        self.messages.is_empty()
 780    }
 781
 782    pub fn summary(&self, cx: &App) -> Option<SharedString> {
 783        self.thread.read(cx).summary()
 784    }
 785
 786    pub fn summary_or_default(&self, cx: &App) -> SharedString {
 787        self.thread.read(cx).summary_or_default()
 788    }
 789
 790    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 791        self.last_error.take();
 792        self.thread.update(cx, |thread, cx| {
 793            thread.cancel_last_completion(Some(window.window_handle()), cx)
 794        })
 795    }
 796
 797    pub fn last_error(&self) -> Option<ThreadError> {
 798        self.last_error.clone()
 799    }
 800
 801    pub fn clear_last_error(&mut self) {
 802        self.last_error.take();
 803    }
 804
 805    pub fn last_usage(&self) -> Option<RequestUsage> {
 806        self.last_usage
 807    }
 808
 809    /// Returns the editing message id and the estimated token count in the content
 810    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
 811        self.editing_message
 812            .as_ref()
 813            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 814    }
 815
 816    fn push_message(
 817        &mut self,
 818        id: &MessageId,
 819        segments: &[MessageSegment],
 820        _window: &mut Window,
 821        cx: &mut Context<Self>,
 822    ) {
 823        let old_len = self.messages.len();
 824        self.messages.push(*id);
 825        self.list_state.splice(old_len..old_len, 1);
 826
 827        let rendered_message =
 828            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 829        self.rendered_messages_by_id.insert(*id, rendered_message);
 830    }
 831
 832    fn edited_message(
 833        &mut self,
 834        id: &MessageId,
 835        segments: &[MessageSegment],
 836        _window: &mut Window,
 837        cx: &mut Context<Self>,
 838    ) {
 839        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 840            return;
 841        };
 842        self.list_state.splice(index..index + 1, 1);
 843        let rendered_message =
 844            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 845        self.rendered_messages_by_id.insert(*id, rendered_message);
 846    }
 847
 848    fn deleted_message(&mut self, id: &MessageId) {
 849        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 850            return;
 851        };
 852        self.messages.remove(index);
 853        self.list_state.splice(index..index + 1, 0);
 854        self.rendered_messages_by_id.remove(id);
 855    }
 856
 857    fn render_tool_use_markdown(
 858        &mut self,
 859        tool_use_id: LanguageModelToolUseId,
 860        tool_label: impl Into<SharedString>,
 861        tool_input: &str,
 862        tool_output: SharedString,
 863        cx: &mut Context<Self>,
 864    ) {
 865        let rendered = self
 866            .rendered_tool_uses
 867            .entry(tool_use_id.clone())
 868            .or_insert_with(|| RenderedToolUse {
 869                label: cx.new(|cx| {
 870                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 871                }),
 872                input: cx.new(|cx| {
 873                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 874                }),
 875                output: cx.new(|cx| {
 876                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 877                }),
 878            });
 879
 880        rendered.label.update(cx, |this, cx| {
 881            this.replace(tool_label, cx);
 882        });
 883        rendered.input.update(cx, |this, cx| {
 884            this.replace(
 885                MarkdownCodeBlock {
 886                    tag: "json",
 887                    text: tool_input,
 888                }
 889                .to_string(),
 890                cx,
 891            );
 892        });
 893        rendered.output.update(cx, |this, cx| {
 894            this.replace(tool_output, cx);
 895        });
 896    }
 897
 898    fn handle_thread_event(
 899        &mut self,
 900        _thread: &Entity<Thread>,
 901        event: &ThreadEvent,
 902        window: &mut Window,
 903        cx: &mut Context<Self>,
 904    ) {
 905        match event {
 906            ThreadEvent::CancelEditing => {
 907                if self.editing_message.is_some() {
 908                    self.cancel_editing_message(&menu::Cancel, window, cx);
 909                }
 910            }
 911            ThreadEvent::ShowError(error) => {
 912                self.last_error = Some(error.clone());
 913            }
 914            ThreadEvent::UsageUpdated(usage) => {
 915                self.last_usage = Some(*usage);
 916            }
 917            ThreadEvent::StreamedCompletion
 918            | ThreadEvent::SummaryGenerated
 919            | ThreadEvent::SummaryChanged => {
 920                self.save_thread(cx);
 921            }
 922            ThreadEvent::Stopped(reason) => match reason {
 923                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 924                    let thread = self.thread.read(cx);
 925                    self.show_notification(
 926                        if thread.used_tools_since_last_user_message() {
 927                            "Finished running tools"
 928                        } else {
 929                            "New message"
 930                        },
 931                        IconName::ZedAssistant,
 932                        window,
 933                        cx,
 934                    );
 935                }
 936                _ => {}
 937            },
 938            ThreadEvent::ToolConfirmationNeeded => {
 939                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 940            }
 941            ThreadEvent::StreamedAssistantText(message_id, text) => {
 942                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 943                    rendered_message.append_text(text, cx);
 944                }
 945            }
 946            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
 947                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 948                    rendered_message.append_thinking(text, cx);
 949                }
 950            }
 951            ThreadEvent::MessageAdded(message_id) => {
 952                if let Some(message_segments) = self
 953                    .thread
 954                    .read(cx)
 955                    .message(*message_id)
 956                    .map(|message| message.segments.clone())
 957                {
 958                    self.push_message(message_id, &message_segments, window, cx);
 959                }
 960
 961                self.save_thread(cx);
 962                cx.notify();
 963            }
 964            ThreadEvent::MessageEdited(message_id) => {
 965                if let Some(message_segments) = self
 966                    .thread
 967                    .read(cx)
 968                    .message(*message_id)
 969                    .map(|message| message.segments.clone())
 970                {
 971                    self.edited_message(message_id, &message_segments, window, cx);
 972                }
 973
 974                self.save_thread(cx);
 975                cx.notify();
 976            }
 977            ThreadEvent::MessageDeleted(message_id) => {
 978                self.deleted_message(message_id);
 979                self.save_thread(cx);
 980                cx.notify();
 981            }
 982            ThreadEvent::UsePendingTools { tool_uses } => {
 983                for tool_use in tool_uses {
 984                    self.render_tool_use_markdown(
 985                        tool_use.id.clone(),
 986                        tool_use.ui_text.clone(),
 987                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 988                        "".into(),
 989                        cx,
 990                    );
 991                }
 992            }
 993            ThreadEvent::StreamedToolUse {
 994                tool_use_id,
 995                ui_text,
 996                input,
 997            } => {
 998                self.render_tool_use_markdown(
 999                    tool_use_id.clone(),
1000                    ui_text.clone(),
1001                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1002                    "".into(),
1003                    cx,
1004                );
1005            }
1006            ThreadEvent::ToolFinished {
1007                pending_tool_use, ..
1008            } => {
1009                if let Some(tool_use) = pending_tool_use {
1010                    self.render_tool_use_markdown(
1011                        tool_use.id.clone(),
1012                        tool_use.ui_text.clone(),
1013                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1014                        self.thread
1015                            .read(cx)
1016                            .output_for_tool(&tool_use.id)
1017                            .map(|output| output.clone().into())
1018                            .unwrap_or("".into()),
1019                        cx,
1020                    );
1021                }
1022            }
1023            ThreadEvent::CheckpointChanged => cx.notify(),
1024            ThreadEvent::ReceivedTextChunk => {}
1025            ThreadEvent::InvalidToolInput {
1026                tool_use_id,
1027                ui_text,
1028                invalid_input_json,
1029            } => {
1030                self.render_tool_use_markdown(
1031                    tool_use_id.clone(),
1032                    ui_text,
1033                    invalid_input_json,
1034                    self.thread
1035                        .read(cx)
1036                        .output_for_tool(tool_use_id)
1037                        .map(|output| output.clone().into())
1038                        .unwrap_or("".into()),
1039                    cx,
1040                );
1041            }
1042        }
1043    }
1044
1045    fn handle_rules_loading_error(
1046        &mut self,
1047        _thread_store: Entity<ThreadStore>,
1048        error: &RulesLoadingError,
1049        cx: &mut Context<Self>,
1050    ) {
1051        self.last_error = Some(ThreadError::Message {
1052            header: "Error loading rules file".into(),
1053            message: error.message.clone(),
1054        });
1055        cx.notify();
1056    }
1057
1058    fn show_notification(
1059        &mut self,
1060        caption: impl Into<SharedString>,
1061        icon: IconName,
1062        window: &mut Window,
1063        cx: &mut Context<ActiveThread>,
1064    ) {
1065        if window.is_window_active() || !self.notifications.is_empty() {
1066            return;
1067        }
1068
1069        let title = self
1070            .thread
1071            .read(cx)
1072            .summary()
1073            .unwrap_or("Agent Panel".into());
1074
1075        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1076            NotifyWhenAgentWaiting::PrimaryScreen => {
1077                if let Some(primary) = cx.primary_display() {
1078                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1079                }
1080            }
1081            NotifyWhenAgentWaiting::AllScreens => {
1082                let caption = caption.into();
1083                for screen in cx.displays() {
1084                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1085                }
1086            }
1087            NotifyWhenAgentWaiting::Never => {
1088                // Don't show anything
1089            }
1090        }
1091    }
1092
1093    fn pop_up(
1094        &mut self,
1095        icon: IconName,
1096        caption: SharedString,
1097        title: SharedString,
1098        window: &mut Window,
1099        screen: Rc<dyn PlatformDisplay>,
1100        cx: &mut Context<'_, ActiveThread>,
1101    ) {
1102        let options = AgentNotification::window_options(screen, cx);
1103
1104        let project_name = self.workspace.upgrade().and_then(|workspace| {
1105            workspace
1106                .read(cx)
1107                .project()
1108                .read(cx)
1109                .visible_worktrees(cx)
1110                .next()
1111                .map(|worktree| worktree.read(cx).root_name().to_string())
1112        });
1113
1114        if let Some(screen_window) = cx
1115            .open_window(options, |_, cx| {
1116                cx.new(|_| {
1117                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1118                })
1119            })
1120            .log_err()
1121        {
1122            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1123                self.notification_subscriptions
1124                    .entry(screen_window)
1125                    .or_insert_with(Vec::new)
1126                    .push(cx.subscribe_in(&pop_up, window, {
1127                        |this, _, event, window, cx| match event {
1128                            AgentNotificationEvent::Accepted => {
1129                                let handle = window.window_handle();
1130                                cx.activate(true);
1131
1132                                let workspace_handle = this.workspace.clone();
1133
1134                                // If there are multiple Zed windows, activate the correct one.
1135                                cx.defer(move |cx| {
1136                                    handle
1137                                        .update(cx, |_view, window, _cx| {
1138                                            window.activate_window();
1139
1140                                            if let Some(workspace) = workspace_handle.upgrade() {
1141                                                workspace.update(_cx, |workspace, cx| {
1142                                                    workspace
1143                                                        .focus_panel::<AssistantPanel>(window, cx);
1144                                                });
1145                                            }
1146                                        })
1147                                        .log_err();
1148                                });
1149
1150                                this.dismiss_notifications(cx);
1151                            }
1152                            AgentNotificationEvent::Dismissed => {
1153                                this.dismiss_notifications(cx);
1154                            }
1155                        }
1156                    }));
1157
1158                self.notifications.push(screen_window);
1159
1160                // If the user manually refocuses the original window, dismiss the popup.
1161                self.notification_subscriptions
1162                    .entry(screen_window)
1163                    .or_insert_with(Vec::new)
1164                    .push({
1165                        let pop_up_weak = pop_up.downgrade();
1166
1167                        cx.observe_window_activation(window, move |_, window, cx| {
1168                            if window.is_window_active() {
1169                                if let Some(pop_up) = pop_up_weak.upgrade() {
1170                                    pop_up.update(cx, |_, cx| {
1171                                        cx.emit(AgentNotificationEvent::Dismissed);
1172                                    });
1173                                }
1174                            }
1175                        })
1176                    });
1177            }
1178        }
1179    }
1180
1181    /// Spawns a task to save the active thread.
1182    ///
1183    /// Only one task to save the thread will be in flight at a time.
1184    fn save_thread(&mut self, cx: &mut Context<Self>) {
1185        let thread = self.thread.clone();
1186        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1187            let task = this
1188                .update(cx, |this, cx| {
1189                    this.thread_store
1190                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1191                })
1192                .ok();
1193
1194            if let Some(task) = task {
1195                task.await.log_err();
1196            }
1197        }));
1198    }
1199
1200    fn start_editing_message(
1201        &mut self,
1202        message_id: MessageId,
1203        message_segments: &[MessageSegment],
1204        window: &mut Window,
1205        cx: &mut Context<Self>,
1206    ) {
1207        // User message should always consist of a single text segment,
1208        // therefore we can skip returning early if it's not a text segment.
1209        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1210            return;
1211        };
1212
1213        let buffer = cx.new(|cx| {
1214            MultiBuffer::singleton(cx.new(|cx| Buffer::local(message_text.clone(), cx)), cx)
1215        });
1216        let editor = cx.new(|cx| {
1217            let mut editor = Editor::new(
1218                editor::EditorMode::AutoHeight { max_lines: 8 },
1219                buffer,
1220                None,
1221                window,
1222                cx,
1223            );
1224            editor.focus_handle(cx).focus(window);
1225            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1226            editor
1227        });
1228        let subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1229            EditorEvent::BufferEdited => {
1230                this.update_editing_message_token_count(true, cx);
1231            }
1232            _ => {}
1233        });
1234        self.editing_message = Some((
1235            message_id,
1236            EditMessageState {
1237                editor: editor.clone(),
1238                last_estimated_token_count: None,
1239                _subscription: subscription,
1240                _update_token_count_task: None,
1241            },
1242        ));
1243        self.update_editing_message_token_count(false, cx);
1244        cx.notify();
1245    }
1246
1247    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1248        let Some((message_id, state)) = self.editing_message.as_mut() else {
1249            return;
1250        };
1251
1252        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1253        state._update_token_count_task.take();
1254
1255        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1256            state.last_estimated_token_count.take();
1257            return;
1258        };
1259
1260        let editor = state.editor.clone();
1261        let thread = self.thread.clone();
1262        let message_id = *message_id;
1263
1264        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1265            if debounce {
1266                cx.background_executor()
1267                    .timer(Duration::from_millis(200))
1268                    .await;
1269            }
1270
1271            let token_count = if let Some(task) = cx
1272                .update(|cx| {
1273                    let Some(message) = thread.read(cx).message(message_id) else {
1274                        log::error!("Message that was being edited no longer exists");
1275                        return None;
1276                    };
1277                    let message_text = editor.read(cx).text(cx);
1278
1279                    if message_text.is_empty() && message.loaded_context.is_empty() {
1280                        return None;
1281                    }
1282
1283                    let mut request_message = LanguageModelRequestMessage {
1284                        role: language_model::Role::User,
1285                        content: Vec::new(),
1286                        cache: false,
1287                    };
1288
1289                    message
1290                        .loaded_context
1291                        .add_to_request_message(&mut request_message);
1292
1293                    if !message_text.is_empty() {
1294                        request_message
1295                            .content
1296                            .push(MessageContent::Text(message_text));
1297                    }
1298
1299                    let request = language_model::LanguageModelRequest {
1300                        thread_id: None,
1301                        prompt_id: None,
1302                        mode: None,
1303                        messages: vec![request_message],
1304                        tools: vec![],
1305                        stop: vec![],
1306                        temperature: None,
1307                    };
1308
1309                    Some(configured_model.model.count_tokens(request, cx))
1310                })
1311                .ok()
1312                .flatten()
1313            {
1314                task.await.log_err()
1315            } else {
1316                Some(0)
1317            };
1318
1319            if let Some(token_count) = token_count {
1320                this.update(cx, |this, cx| {
1321                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1322                        return;
1323                    };
1324
1325                    state.last_estimated_token_count = Some(token_count);
1326                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1327                })
1328                .ok();
1329            };
1330        }));
1331    }
1332
1333    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1334        self.editing_message.take();
1335        cx.notify();
1336    }
1337
1338    fn confirm_editing_message(
1339        &mut self,
1340        _: &menu::Confirm,
1341        window: &mut Window,
1342        cx: &mut Context<Self>,
1343    ) {
1344        let Some((message_id, state)) = self.editing_message.take() else {
1345            return;
1346        };
1347        let edited_text = state.editor.read(cx).text(cx);
1348        let thread_model = self.thread.update(cx, |thread, cx| {
1349            thread.edit_message(
1350                message_id,
1351                Role::User,
1352                vec![MessageSegment::Text(edited_text)],
1353                cx,
1354            );
1355            for message_id in self.messages_after(message_id) {
1356                thread.delete_message(*message_id, cx);
1357            }
1358            thread.get_or_init_configured_model(cx)
1359        });
1360
1361        let Some(model) = thread_model else {
1362            return;
1363        };
1364
1365        if model.provider.must_accept_terms(cx) {
1366            cx.notify();
1367            return;
1368        }
1369
1370        self.thread.update(cx, |thread, cx| {
1371            thread.advance_prompt_id();
1372            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1373        });
1374        cx.notify();
1375    }
1376
1377    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1378        self.messages
1379            .iter()
1380            .position(|id| *id == message_id)
1381            .map(|index| &self.messages[index + 1..])
1382            .unwrap_or(&[])
1383    }
1384
1385    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1386        self.cancel_editing_message(&menu::Cancel, window, cx);
1387    }
1388
1389    fn handle_regenerate_click(
1390        &mut self,
1391        _: &ClickEvent,
1392        window: &mut Window,
1393        cx: &mut Context<Self>,
1394    ) {
1395        self.confirm_editing_message(&menu::Confirm, window, cx);
1396    }
1397
1398    fn handle_feedback_click(
1399        &mut self,
1400        message_id: MessageId,
1401        feedback: ThreadFeedback,
1402        window: &mut Window,
1403        cx: &mut Context<Self>,
1404    ) {
1405        let report = self.thread.update(cx, |thread, cx| {
1406            thread.report_message_feedback(message_id, feedback, cx)
1407        });
1408
1409        cx.spawn(async move |this, cx| {
1410            report.await?;
1411            this.update(cx, |_this, cx| cx.notify())
1412        })
1413        .detach_and_log_err(cx);
1414
1415        match feedback {
1416            ThreadFeedback::Positive => {
1417                self.open_feedback_editors.remove(&message_id);
1418            }
1419            ThreadFeedback::Negative => {
1420                self.handle_show_feedback_comments(message_id, window, cx);
1421            }
1422        }
1423    }
1424
1425    fn handle_show_feedback_comments(
1426        &mut self,
1427        message_id: MessageId,
1428        window: &mut Window,
1429        cx: &mut Context<Self>,
1430    ) {
1431        let buffer = cx.new(|cx| {
1432            let empty_string = String::new();
1433            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1434        });
1435
1436        let editor = cx.new(|cx| {
1437            let mut editor = Editor::new(
1438                editor::EditorMode::AutoHeight { max_lines: 4 },
1439                buffer,
1440                None,
1441                window,
1442                cx,
1443            );
1444            editor.set_placeholder_text(
1445                "What went wrong? Share your feedback so we can improve.",
1446                cx,
1447            );
1448            editor
1449        });
1450
1451        editor.read(cx).focus_handle(cx).focus(window);
1452        self.open_feedback_editors.insert(message_id, editor);
1453        cx.notify();
1454    }
1455
1456    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1457        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1458            return;
1459        };
1460
1461        let report_task = self.thread.update(cx, |thread, cx| {
1462            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1463        });
1464
1465        let comments = editor.read(cx).text(cx);
1466        if !comments.is_empty() {
1467            let thread_id = self.thread.read(cx).id().clone();
1468            let comments_value = String::from(comments.as_str());
1469
1470            let message_content = self
1471                .thread
1472                .read(cx)
1473                .message(message_id)
1474                .map(|msg| msg.to_string())
1475                .unwrap_or_default();
1476
1477            telemetry::event!(
1478                "Assistant Thread Feedback Comments",
1479                thread_id,
1480                message_id = message_id.0,
1481                message_content,
1482                comments = comments_value
1483            );
1484
1485            self.open_feedback_editors.remove(&message_id);
1486
1487            cx.spawn(async move |this, cx| {
1488                report_task.await?;
1489                this.update(cx, |_this, cx| cx.notify())
1490            })
1491            .detach_and_log_err(cx);
1492        }
1493    }
1494
1495    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1496        let message_id = self.messages[ix];
1497        let Some(message) = self.thread.read(cx).message(message_id) else {
1498            return Empty.into_any();
1499        };
1500
1501        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1502            return Empty.into_any();
1503        };
1504
1505        let workspace = self.workspace.clone();
1506        let thread = self.thread.read(cx);
1507
1508        // Get all the data we need from thread before we start using it in closures
1509        let checkpoint = thread.checkpoint_for_message(message_id);
1510        let added_context = thread
1511            .context_for_message(message_id)
1512            .map(|context| AddedContext::new_attached(context, cx))
1513            .collect::<Vec<_>>();
1514
1515        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1516        let has_tool_uses = !tool_uses.is_empty();
1517        let is_generating = thread.is_generating();
1518
1519        let is_first_message = ix == 0;
1520        let is_last_message = ix == self.messages.len() - 1;
1521
1522        let show_feedback = thread.is_turn_end(ix);
1523
1524        let generating_label = (is_generating && is_last_message)
1525            .then(|| AnimatedLabel::new("Generating").size(LabelSize::Small));
1526
1527        let edit_message_editor = self
1528            .editing_message
1529            .as_ref()
1530            .filter(|(id, _)| *id == message_id)
1531            .map(|(_, state)| state.editor.clone());
1532
1533        let colors = cx.theme().colors();
1534        let editor_bg_color = colors.editor_background;
1535
1536        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileCode)
1537            .shape(ui::IconButtonShape::Square)
1538            .icon_size(IconSize::XSmall)
1539            .icon_color(Color::Ignored)
1540            .tooltip(Tooltip::text("Open Thread as Markdown"))
1541            .on_click(|_, window, cx| {
1542                window.dispatch_action(Box::new(OpenActiveThreadAsMarkdown), cx)
1543            });
1544
1545        // For all items that should be aligned with the LLM's response.
1546        const RESPONSE_PADDING_X: Pixels = px(18.);
1547
1548        let feedback_container = h_flex()
1549            .group("feedback_container")
1550            .py_2()
1551            .px(RESPONSE_PADDING_X)
1552            .gap_1()
1553            .flex_wrap()
1554            .justify_end();
1555        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1556            Some(feedback) => feedback_container
1557                .child(
1558                    div().mr_1().visible_on_hover("feedback_container").child(
1559                        Label::new(match feedback {
1560                            ThreadFeedback::Positive => "Thanks for your feedback!",
1561                            ThreadFeedback::Negative => {
1562                                "We appreciate your feedback and will use it to improve."
1563                            }
1564                        })
1565                    .color(Color::Muted)
1566                    .size(LabelSize::XSmall)
1567                    .truncate())
1568                )
1569                .child(
1570                    h_flex()
1571                        .pr_1()
1572                        .gap_1()
1573                        .child(
1574                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1575                                .shape(ui::IconButtonShape::Square)
1576                                .icon_size(IconSize::XSmall)
1577                                .icon_color(match feedback {
1578                                    ThreadFeedback::Positive => Color::Accent,
1579                                    ThreadFeedback::Negative => Color::Ignored,
1580                                })
1581                                .tooltip(Tooltip::text("Helpful Response"))
1582                                .on_click(cx.listener(move |this, _, window, cx| {
1583                                    this.handle_feedback_click(
1584                                        message_id,
1585                                        ThreadFeedback::Positive,
1586                                        window,
1587                                        cx,
1588                                    );
1589                                })),
1590                        )
1591                        .child(
1592                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1593                                .shape(ui::IconButtonShape::Square)
1594                                .icon_size(IconSize::XSmall)
1595                                .icon_color(match feedback {
1596                                    ThreadFeedback::Positive => Color::Ignored,
1597                                    ThreadFeedback::Negative => Color::Accent,
1598                                })
1599                                .tooltip(Tooltip::text("Not Helpful"))
1600                                .on_click(cx.listener(move |this, _, window, cx| {
1601                                    this.handle_feedback_click(
1602                                        message_id,
1603                                        ThreadFeedback::Negative,
1604                                        window,
1605                                        cx,
1606                                    );
1607                                })),
1608                        )
1609                        .child(open_as_markdown),
1610                )
1611                .into_any_element(),
1612            None => feedback_container
1613                .child(
1614                    div().mr_1().visible_on_hover("feedback_container").child(
1615                        Label::new(
1616                            "Rating the thread sends all of your current conversation to the Zed team.",
1617                        )
1618                        .color(Color::Muted)
1619                    .size(LabelSize::XSmall)
1620                    .truncate())
1621                )
1622                .child(
1623                    h_flex()
1624                        .pr_1()
1625                        .gap_1()
1626                        .child(
1627                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1628                                .icon_size(IconSize::XSmall)
1629                                .icon_color(Color::Ignored)
1630                                .shape(ui::IconButtonShape::Square)
1631                                .tooltip(Tooltip::text("Helpful Response"))
1632                                .on_click(cx.listener(move |this, _, window, cx| {
1633                                    this.handle_feedback_click(
1634                                        message_id,
1635                                        ThreadFeedback::Positive,
1636                                        window,
1637                                        cx,
1638                                    );
1639                                })),
1640                        )
1641                        .child(
1642                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1643                                .icon_size(IconSize::XSmall)
1644                                .icon_color(Color::Ignored)
1645                                .shape(ui::IconButtonShape::Square)
1646                                .tooltip(Tooltip::text("Not Helpful"))
1647                                .on_click(cx.listener(move |this, _, window, cx| {
1648                                    this.handle_feedback_click(
1649                                        message_id,
1650                                        ThreadFeedback::Negative,
1651                                        window,
1652                                        cx,
1653                                    );
1654                                })),
1655                        )
1656                        .child(open_as_markdown),
1657                )
1658                .into_any_element(),
1659        };
1660
1661        let message_is_empty = message.should_display_content();
1662        let has_content = !message_is_empty || !added_context.is_empty();
1663
1664        let message_content = has_content.then(|| {
1665            v_flex()
1666                .w_full()
1667                .gap_1()
1668                .when(!message_is_empty, |parent| {
1669                    parent.child(
1670                        if let Some(edit_message_editor) = edit_message_editor.clone() {
1671                            let settings = ThemeSettings::get_global(cx);
1672                            let font_size = TextSize::Small.rems(cx);
1673                            let line_height = font_size.to_pixels(window.rem_size()) * 1.5;
1674
1675                            let text_style = TextStyle {
1676                                color: cx.theme().colors().text,
1677                                font_family: settings.buffer_font.family.clone(),
1678                                font_fallbacks: settings.buffer_font.fallbacks.clone(),
1679                                font_features: settings.buffer_font.features.clone(),
1680                                font_size: font_size.into(),
1681                                line_height: line_height.into(),
1682                                ..Default::default()
1683                            };
1684
1685                            div()
1686                                .key_context("EditMessageEditor")
1687                                .on_action(cx.listener(Self::cancel_editing_message))
1688                                .on_action(cx.listener(Self::confirm_editing_message))
1689                                .min_h_6()
1690                                .flex_grow()
1691                                .w_full()
1692                                .child(EditorElement::new(
1693                                    &edit_message_editor,
1694                                    EditorStyle {
1695                                        background: colors.editor_background,
1696                                        local_player: cx.theme().players().local(),
1697                                        text: text_style,
1698                                        syntax: cx.theme().syntax().clone(),
1699                                        ..Default::default()
1700                                    },
1701                                ))
1702                                .into_any()
1703                        } else {
1704                            div()
1705                                .min_h_6()
1706                                .child(self.render_message_content(
1707                                    message_id,
1708                                    rendered_message,
1709                                    has_tool_uses,
1710                                    workspace.clone(),
1711                                    window,
1712                                    cx,
1713                                ))
1714                                .into_any()
1715                        },
1716                    )
1717                })
1718                .when(!added_context.is_empty(), |parent| {
1719                    parent.child(h_flex().flex_wrap().gap_1().children(
1720                        added_context.into_iter().map(|added_context| {
1721                            let context = added_context.handle.clone();
1722                            ContextPill::added(added_context, false, false, None).on_click(Rc::new(
1723                                cx.listener({
1724                                    let workspace = workspace.clone();
1725                                    move |_, _, window, cx| {
1726                                        if let Some(workspace) = workspace.upgrade() {
1727                                            open_context(&context, workspace, window, cx);
1728                                            cx.notify();
1729                                        }
1730                                    }
1731                                }),
1732                            ))
1733                        }),
1734                    ))
1735                })
1736        });
1737
1738        let styled_message = match message.role {
1739            Role::User => v_flex()
1740                .id(("message-container", ix))
1741                .pt_2()
1742                .pl_2()
1743                .pr_2p5()
1744                .pb_4()
1745                .child(
1746                    v_flex()
1747                        .id(("user-message", ix))
1748                        .bg(editor_bg_color)
1749                        .rounded_lg()
1750                        .shadow_md()
1751                        .border_1()
1752                        .border_color(colors.border)
1753                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1754                        .cursor_pointer()
1755                        .child(
1756                            h_flex()
1757                                .p_2()
1758                                .pt_3()
1759                                .gap_1()
1760                                .children(message_content)
1761                                .when_some(edit_message_editor.clone(), |this, edit_editor| {
1762                                    let edit_editor_clone = edit_editor.clone();
1763                                    this.w_full().justify_between().child(
1764                                        h_flex()
1765                                            .gap_0p5()
1766                                            .child(
1767                                                IconButton::new(
1768                                                    "cancel-edit-message",
1769                                                    IconName::Close,
1770                                                )
1771                                                .shape(ui::IconButtonShape::Square)
1772                                                .icon_color(Color::Error)
1773                                                .tooltip(move |window, cx| {
1774                                                    let focus_handle =
1775                                                        edit_editor_clone.focus_handle(cx);
1776                                                    Tooltip::for_action_in(
1777                                                        "Cancel Edit",
1778                                                        &menu::Cancel,
1779                                                        &focus_handle,
1780                                                        window,
1781                                                        cx,
1782                                                    )
1783                                                })
1784                                                .on_click(cx.listener(Self::handle_cancel_click)),
1785                                            )
1786                                            .child(
1787                                                IconButton::new(
1788                                                    "confirm-edit-message",
1789                                                    IconName::Check,
1790                                                )
1791                                                .disabled(edit_editor.read(cx).is_empty(cx))
1792                                                .shape(ui::IconButtonShape::Square)
1793                                                .icon_color(Color::Success)
1794                                                .tooltip(move |window, cx| {
1795                                                    let focus_handle = edit_editor.focus_handle(cx);
1796                                                    Tooltip::for_action_in(
1797                                                        "Regenerate",
1798                                                        &menu::Confirm,
1799                                                        &focus_handle,
1800                                                        window,
1801                                                        cx,
1802                                                    )
1803                                                })
1804                                                .on_click(
1805                                                    cx.listener(Self::handle_regenerate_click),
1806                                                ),
1807                                            ),
1808                                    )
1809                                }),
1810                        )
1811                        .when(edit_message_editor.is_none(), |this| {
1812                            this.tooltip(Tooltip::text("Click To Edit"))
1813                        })
1814                        .on_click(cx.listener({
1815                            let message_segments = message.segments.clone();
1816                            move |this, _, window, cx| {
1817                                this.start_editing_message(
1818                                    message_id,
1819                                    &message_segments,
1820                                    window,
1821                                    cx,
1822                                );
1823                            }
1824                        })),
1825                ),
1826            Role::Assistant => v_flex()
1827                .id(("message-container", ix))
1828                .px(RESPONSE_PADDING_X)
1829                .gap_2()
1830                .children(message_content)
1831                .when(has_tool_uses, |parent| {
1832                    parent.children(tool_uses.into_iter().map(|tool_use| {
1833                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
1834                    }))
1835                }),
1836            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
1837                v_flex()
1838                    .bg(colors.editor_background)
1839                    .rounded_sm()
1840                    .child(div().p_4().children(message_content)),
1841            ),
1842        };
1843
1844        let after_editing_message = self
1845            .editing_message
1846            .as_ref()
1847            .map_or(false, |(editing_message_id, _)| {
1848                message_id > *editing_message_id
1849            });
1850
1851        let panel_background = cx.theme().colors().panel_background;
1852
1853        v_flex()
1854            .w_full()
1855            .when_some(checkpoint, |parent, checkpoint| {
1856                let mut is_pending = false;
1857                let mut error = None;
1858                if let Some(last_restore_checkpoint) =
1859                    self.thread.read(cx).last_restore_checkpoint()
1860                {
1861                    if last_restore_checkpoint.message_id() == message_id {
1862                        match last_restore_checkpoint {
1863                            LastRestoreCheckpoint::Pending { .. } => is_pending = true,
1864                            LastRestoreCheckpoint::Error { error: err, .. } => {
1865                                error = Some(err.clone());
1866                            }
1867                        }
1868                    }
1869                }
1870
1871                let restore_checkpoint_button =
1872                    Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
1873                        .icon(if error.is_some() {
1874                            IconName::XCircle
1875                        } else {
1876                            IconName::Undo
1877                        })
1878                        .icon_size(IconSize::XSmall)
1879                        .icon_position(IconPosition::Start)
1880                        .icon_color(if error.is_some() {
1881                            Some(Color::Error)
1882                        } else {
1883                            None
1884                        })
1885                        .label_size(LabelSize::XSmall)
1886                        .disabled(is_pending)
1887                        .on_click(cx.listener(move |this, _, _window, cx| {
1888                            this.thread.update(cx, |thread, cx| {
1889                                thread
1890                                    .restore_checkpoint(checkpoint.clone(), cx)
1891                                    .detach_and_log_err(cx);
1892                            });
1893                        }));
1894
1895                let restore_checkpoint_button = if is_pending {
1896                    restore_checkpoint_button
1897                        .with_animation(
1898                            ("pulsating-restore-checkpoint-button", ix),
1899                            Animation::new(Duration::from_secs(2))
1900                                .repeat()
1901                                .with_easing(pulsating_between(0.6, 1.)),
1902                            |label, delta| label.alpha(delta),
1903                        )
1904                        .into_any_element()
1905                } else if let Some(error) = error {
1906                    restore_checkpoint_button
1907                        .tooltip(Tooltip::text(error.to_string()))
1908                        .into_any_element()
1909                } else {
1910                    restore_checkpoint_button.into_any_element()
1911                };
1912
1913                parent.child(
1914                    h_flex()
1915                        .pt_2p5()
1916                        .px_2p5()
1917                        .w_full()
1918                        .gap_1()
1919                        .child(ui::Divider::horizontal())
1920                        .child(restore_checkpoint_button)
1921                        .child(ui::Divider::horizontal()),
1922                )
1923            })
1924            .when(is_first_message, |parent| {
1925                parent.child(self.render_rules_item(cx))
1926            })
1927            .child(styled_message)
1928            .when(generating_label.is_some(), |this| {
1929                this.child(
1930                    h_flex()
1931                        .h_8()
1932                        .mt_2()
1933                        .mb_4()
1934                        .ml_4()
1935                        .py_1p5()
1936                        .child(generating_label.unwrap()),
1937                )
1938            })
1939            .when(show_feedback, move |parent| {
1940                parent.child(feedback_items).when_some(
1941                    self.open_feedback_editors.get(&message_id),
1942                    move |parent, feedback_editor| {
1943                        let focus_handle = feedback_editor.focus_handle(cx);
1944                        parent.child(
1945                            v_flex()
1946                                .key_context("AgentFeedbackMessageEditor")
1947                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
1948                                    this.open_feedback_editors.remove(&message_id);
1949                                    cx.notify();
1950                                }))
1951                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
1952                                    this.submit_feedback_message(message_id, cx);
1953                                    cx.notify();
1954                                }))
1955                                .on_action(cx.listener(Self::confirm_editing_message))
1956                                .mb_2()
1957                                .mx_4()
1958                                .p_2()
1959                                .rounded_md()
1960                                .border_1()
1961                                .border_color(cx.theme().colors().border)
1962                                .bg(cx.theme().colors().editor_background)
1963                                .child(feedback_editor.clone())
1964                                .child(
1965                                    h_flex()
1966                                        .gap_1()
1967                                        .justify_end()
1968                                        .child(
1969                                            Button::new("dismiss-feedback-message", "Cancel")
1970                                                .label_size(LabelSize::Small)
1971                                                .key_binding(
1972                                                    KeyBinding::for_action_in(
1973                                                        &menu::Cancel,
1974                                                        &focus_handle,
1975                                                        window,
1976                                                        cx,
1977                                                    )
1978                                                    .map(|kb| kb.size(rems_from_px(10.))),
1979                                                )
1980                                                .on_click(cx.listener(
1981                                                    move |this, _, _window, cx| {
1982                                                        this.open_feedback_editors
1983                                                            .remove(&message_id);
1984                                                        cx.notify();
1985                                                    },
1986                                                )),
1987                                        )
1988                                        .child(
1989                                            Button::new(
1990                                                "submit-feedback-message",
1991                                                "Share Feedback",
1992                                            )
1993                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
1994                                            .label_size(LabelSize::Small)
1995                                            .key_binding(
1996                                                KeyBinding::for_action_in(
1997                                                    &menu::Confirm,
1998                                                    &focus_handle,
1999                                                    window,
2000                                                    cx,
2001                                                )
2002                                                .map(|kb| kb.size(rems_from_px(10.))),
2003                                            )
2004                                            .on_click(
2005                                                cx.listener(move |this, _, _window, cx| {
2006                                                    this.submit_feedback_message(message_id, cx);
2007                                                    cx.notify()
2008                                                }),
2009                                            ),
2010                                        ),
2011                                ),
2012                        )
2013                    },
2014                )
2015            })
2016            .when(after_editing_message, |parent| {
2017                // Backdrop to dim out the whole thread below the editing user message
2018                parent.relative().child(
2019                    div()
2020                        .occlude()
2021                        .absolute()
2022                        .inset_0()
2023                        .size_full()
2024                        .bg(panel_background)
2025                        .opacity(0.8),
2026                )
2027            })
2028            .into_any()
2029    }
2030
2031    fn render_message_content(
2032        &self,
2033        message_id: MessageId,
2034        rendered_message: &RenderedMessage,
2035        has_tool_uses: bool,
2036        workspace: WeakEntity<Workspace>,
2037        window: &Window,
2038        cx: &Context<Self>,
2039    ) -> impl IntoElement {
2040        let is_last_message = self.messages.last() == Some(&message_id);
2041        let is_generating = self.thread.read(cx).is_generating();
2042        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2043            rendered_message
2044                .segments
2045                .iter()
2046                .enumerate()
2047                .next_back()
2048                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2049                .map(|(index, _)| index)
2050        } else {
2051            None
2052        };
2053
2054        let message_role = self
2055            .thread
2056            .read(cx)
2057            .message(message_id)
2058            .map(|m| m.role)
2059            .unwrap_or(Role::User);
2060
2061        let is_assistant_message = message_role == Role::Assistant;
2062        let is_user_message = message_role == Role::User;
2063
2064        v_flex()
2065            .text_ui(cx)
2066            .gap_2()
2067            .when(is_user_message, |this| this.text_xs())
2068            .children(
2069                rendered_message.segments.iter().enumerate().map(
2070                    |(index, segment)| match segment {
2071                        RenderedMessageSegment::Thinking {
2072                            content,
2073                            scroll_handle,
2074                        } => self
2075                            .render_message_thinking_segment(
2076                                message_id,
2077                                index,
2078                                content.clone(),
2079                                &scroll_handle,
2080                                Some(index) == pending_thinking_segment_index,
2081                                window,
2082                                cx,
2083                            )
2084                            .into_any_element(),
2085                        RenderedMessageSegment::Text(markdown) => {
2086                            let markdown_element = MarkdownElement::new(
2087                                markdown.clone(),
2088                                if is_user_message {
2089                                    let mut style = default_markdown_style(window, cx);
2090                                    let mut text_style = window.text_style();
2091                                    let theme_settings = ThemeSettings::get_global(cx);
2092
2093                                    let buffer_font = theme_settings.buffer_font.family.clone();
2094                                    let buffer_font_size = TextSize::Small.rems(cx);
2095
2096                                    text_style.refine(&TextStyleRefinement {
2097                                        font_family: Some(buffer_font),
2098                                        font_size: Some(buffer_font_size.into()),
2099                                        ..Default::default()
2100                                    });
2101
2102                                    style.base_text_style = text_style;
2103                                    style
2104                                } else {
2105                                    default_markdown_style(window, cx)
2106                                },
2107                            );
2108
2109                            let markdown_element = if is_assistant_message {
2110                                markdown_element.code_block_renderer(
2111                                    markdown::CodeBlockRenderer::Custom {
2112                                        render: Arc::new({
2113                                            let workspace = workspace.clone();
2114                                            let active_thread = cx.entity();
2115                                            move |kind,
2116                                                  parsed_markdown,
2117                                                  range,
2118                                                  metadata,
2119                                                  window,
2120                                                  cx| {
2121                                                render_markdown_code_block(
2122                                                    message_id,
2123                                                    range.start,
2124                                                    kind,
2125                                                    parsed_markdown,
2126                                                    metadata,
2127                                                    active_thread.clone(),
2128                                                    workspace.clone(),
2129                                                    window,
2130                                                    cx,
2131                                                )
2132                                            }
2133                                        }),
2134                                        transform: Some(Arc::new({
2135                                            let active_thread = cx.entity();
2136                                            let editor_bg = cx.theme().colors().editor_background;
2137
2138                                            move |el, range, metadata, _, cx| {
2139                                                let is_expanded = active_thread
2140                                                    .read(cx)
2141                                                    .expanded_code_blocks
2142                                                    .get(&(message_id, range.start))
2143                                                    .copied()
2144                                                    .unwrap_or(true);
2145
2146                                                if is_expanded
2147                                                    || metadata.line_count
2148                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2149                                                {
2150                                                    return el;
2151                                                }
2152                                                el.child(
2153                                                    div()
2154                                                        .absolute()
2155                                                        .bottom_0()
2156                                                        .left_0()
2157                                                        .w_full()
2158                                                        .h_1_4()
2159                                                        .rounded_b_lg()
2160                                                        .bg(linear_gradient(
2161                                                            0.,
2162                                                            linear_color_stop(editor_bg, 0.),
2163                                                            linear_color_stop(
2164                                                                editor_bg.opacity(0.),
2165                                                                1.,
2166                                                            ),
2167                                                        )),
2168                                                )
2169                                            }
2170                                        })),
2171                                    },
2172                                )
2173                            } else {
2174                                markdown_element.code_block_renderer(
2175                                    markdown::CodeBlockRenderer::Default {
2176                                        copy_button: false,
2177                                        border: true,
2178                                    },
2179                                )
2180                            };
2181
2182                            div()
2183                                .child(markdown_element.on_url_click({
2184                                    let workspace = self.workspace.clone();
2185                                    move |text, window, cx| {
2186                                        open_markdown_link(text, workspace.clone(), window, cx);
2187                                    }
2188                                }))
2189                                .into_any_element()
2190                        }
2191                    },
2192                ),
2193            )
2194    }
2195
2196    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2197        cx.theme().colors().border.opacity(0.5)
2198    }
2199
2200    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2201        cx.theme()
2202            .colors()
2203            .element_background
2204            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2205    }
2206
2207    fn render_message_thinking_segment(
2208        &self,
2209        message_id: MessageId,
2210        ix: usize,
2211        markdown: Entity<Markdown>,
2212        scroll_handle: &ScrollHandle,
2213        pending: bool,
2214        window: &Window,
2215        cx: &Context<Self>,
2216    ) -> impl IntoElement {
2217        let is_open = self
2218            .expanded_thinking_segments
2219            .get(&(message_id, ix))
2220            .copied()
2221            .unwrap_or_default();
2222
2223        let editor_bg = cx.theme().colors().panel_background;
2224
2225        div().map(|this| {
2226            if pending {
2227                this.v_flex()
2228                    .mt_neg_2()
2229                    .mb_1p5()
2230                    .child(
2231                        h_flex()
2232                            .group("disclosure-header")
2233                            .justify_between()
2234                            .child(
2235                                h_flex()
2236                                    .gap_1p5()
2237                                    .child(
2238                                        Icon::new(IconName::LightBulb)
2239                                            .size(IconSize::XSmall)
2240                                            .color(Color::Muted),
2241                                    )
2242                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2243                            )
2244                            .child(
2245                                h_flex()
2246                                    .gap_1()
2247                                    .child(
2248                                        div().visible_on_hover("disclosure-header").child(
2249                                            Disclosure::new("thinking-disclosure", is_open)
2250                                                .opened_icon(IconName::ChevronUp)
2251                                                .closed_icon(IconName::ChevronDown)
2252                                                .on_click(cx.listener({
2253                                                    move |this, _event, _window, _cx| {
2254                                                        let is_open = this
2255                                                            .expanded_thinking_segments
2256                                                            .entry((message_id, ix))
2257                                                            .or_insert(false);
2258
2259                                                        *is_open = !*is_open;
2260                                                    }
2261                                                })),
2262                                        ),
2263                                    )
2264                                    .child({
2265                                        Icon::new(IconName::ArrowCircle)
2266                                            .color(Color::Accent)
2267                                            .size(IconSize::Small)
2268                                            .with_animation(
2269                                                "arrow-circle",
2270                                                Animation::new(Duration::from_secs(2)).repeat(),
2271                                                |icon, delta| {
2272                                                    icon.transform(Transformation::rotate(
2273                                                        percentage(delta),
2274                                                    ))
2275                                                },
2276                                            )
2277                                    }),
2278                            ),
2279                    )
2280                    .when(!is_open, |this| {
2281                        let gradient_overlay = div()
2282                            .rounded_b_lg()
2283                            .h_full()
2284                            .absolute()
2285                            .w_full()
2286                            .bottom_0()
2287                            .left_0()
2288                            .bg(linear_gradient(
2289                                180.,
2290                                linear_color_stop(editor_bg, 1.),
2291                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2292                            ));
2293
2294                        this.child(
2295                            div()
2296                                .relative()
2297                                .bg(editor_bg)
2298                                .rounded_b_lg()
2299                                .mt_2()
2300                                .pl_4()
2301                                .child(
2302                                    div()
2303                                        .id(("thinking-content", ix))
2304                                        .max_h_20()
2305                                        .track_scroll(scroll_handle)
2306                                        .text_ui_sm(cx)
2307                                        .overflow_hidden()
2308                                        .child(
2309                                            MarkdownElement::new(
2310                                                markdown.clone(),
2311                                                default_markdown_style(window, cx),
2312                                            )
2313                                            .on_url_click({
2314                                                let workspace = self.workspace.clone();
2315                                                move |text, window, cx| {
2316                                                    open_markdown_link(
2317                                                        text,
2318                                                        workspace.clone(),
2319                                                        window,
2320                                                        cx,
2321                                                    );
2322                                                }
2323                                            }),
2324                                        ),
2325                                )
2326                                .child(gradient_overlay),
2327                        )
2328                    })
2329                    .when(is_open, |this| {
2330                        this.child(
2331                            div()
2332                                .id(("thinking-content", ix))
2333                                .h_full()
2334                                .bg(editor_bg)
2335                                .text_ui_sm(cx)
2336                                .child(
2337                                    MarkdownElement::new(
2338                                        markdown.clone(),
2339                                        default_markdown_style(window, cx),
2340                                    )
2341                                    .on_url_click({
2342                                        let workspace = self.workspace.clone();
2343                                        move |text, window, cx| {
2344                                            open_markdown_link(text, workspace.clone(), window, cx);
2345                                        }
2346                                    }),
2347                                ),
2348                        )
2349                    })
2350            } else {
2351                this.v_flex()
2352                    .mt_neg_2()
2353                    .child(
2354                        h_flex()
2355                            .group("disclosure-header")
2356                            .pr_1()
2357                            .justify_between()
2358                            .opacity(0.8)
2359                            .hover(|style| style.opacity(1.))
2360                            .child(
2361                                h_flex()
2362                                    .gap_1p5()
2363                                    .child(
2364                                        Icon::new(IconName::LightBulb)
2365                                            .size(IconSize::XSmall)
2366                                            .color(Color::Muted),
2367                                    )
2368                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2369                            )
2370                            .child(
2371                                div().visible_on_hover("disclosure-header").child(
2372                                    Disclosure::new("thinking-disclosure", is_open)
2373                                        .opened_icon(IconName::ChevronUp)
2374                                        .closed_icon(IconName::ChevronDown)
2375                                        .on_click(cx.listener({
2376                                            move |this, _event, _window, _cx| {
2377                                                let is_open = this
2378                                                    .expanded_thinking_segments
2379                                                    .entry((message_id, ix))
2380                                                    .or_insert(false);
2381
2382                                                *is_open = !*is_open;
2383                                            }
2384                                        })),
2385                                ),
2386                            ),
2387                    )
2388                    .child(
2389                        div()
2390                            .id(("thinking-content", ix))
2391                            .relative()
2392                            .mt_1p5()
2393                            .ml_1p5()
2394                            .pl_2p5()
2395                            .border_l_1()
2396                            .border_color(cx.theme().colors().border_variant)
2397                            .text_ui_sm(cx)
2398                            .when(is_open, |this| {
2399                                this.child(
2400                                    MarkdownElement::new(
2401                                        markdown.clone(),
2402                                        default_markdown_style(window, cx),
2403                                    )
2404                                    .on_url_click({
2405                                        let workspace = self.workspace.clone();
2406                                        move |text, window, cx| {
2407                                            open_markdown_link(text, workspace.clone(), window, cx);
2408                                        }
2409                                    }),
2410                                )
2411                            }),
2412                    )
2413            }
2414        })
2415    }
2416
2417    fn render_tool_use(
2418        &self,
2419        tool_use: ToolUse,
2420        window: &mut Window,
2421        workspace: WeakEntity<Workspace>,
2422        cx: &mut Context<Self>,
2423    ) -> impl IntoElement + use<> {
2424        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2425            return card.render(&tool_use.status, window, workspace, cx);
2426        }
2427
2428        let is_open = self
2429            .expanded_tool_uses
2430            .get(&tool_use.id)
2431            .copied()
2432            .unwrap_or_default();
2433
2434        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2435
2436        let fs = self
2437            .workspace
2438            .upgrade()
2439            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2440        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2441        let needs_confirmation_tools = tool_use.needs_confirmation;
2442
2443        let status_icons = div().child(match &tool_use.status {
2444            ToolUseStatus::NeedsConfirmation => {
2445                let icon = Icon::new(IconName::Warning)
2446                    .color(Color::Warning)
2447                    .size(IconSize::Small);
2448                icon.into_any_element()
2449            }
2450            ToolUseStatus::Pending
2451            | ToolUseStatus::InputStillStreaming
2452            | ToolUseStatus::Running => {
2453                let icon = Icon::new(IconName::ArrowCircle)
2454                    .color(Color::Accent)
2455                    .size(IconSize::Small);
2456                icon.with_animation(
2457                    "arrow-circle",
2458                    Animation::new(Duration::from_secs(2)).repeat(),
2459                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2460                )
2461                .into_any_element()
2462            }
2463            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2464            ToolUseStatus::Error(_) => {
2465                let icon = Icon::new(IconName::Close)
2466                    .color(Color::Error)
2467                    .size(IconSize::Small);
2468                icon.into_any_element()
2469            }
2470        });
2471
2472        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2473        let results_content_container = || v_flex().p_2().gap_0p5();
2474
2475        let results_content = v_flex()
2476            .gap_1()
2477            .child(
2478                results_content_container()
2479                    .child(
2480                        Label::new("Input")
2481                            .size(LabelSize::XSmall)
2482                            .color(Color::Muted)
2483                            .buffer_font(cx),
2484                    )
2485                    .child(
2486                        div()
2487                            .w_full()
2488                            .text_ui_sm(cx)
2489                            .children(rendered_tool_use.as_ref().map(|rendered| {
2490                                MarkdownElement::new(
2491                                    rendered.input.clone(),
2492                                    tool_use_markdown_style(window, cx),
2493                                )
2494                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2495                                    copy_button: false,
2496                                    border: false,
2497                                })
2498                                .on_url_click({
2499                                    let workspace = self.workspace.clone();
2500                                    move |text, window, cx| {
2501                                        open_markdown_link(text, workspace.clone(), window, cx);
2502                                    }
2503                                })
2504                            })),
2505                    ),
2506            )
2507            .map(|container| match tool_use.status {
2508                ToolUseStatus::Finished(_) => container.child(
2509                    results_content_container()
2510                        .border_t_1()
2511                        .border_color(self.tool_card_border_color(cx))
2512                        .child(
2513                            Label::new("Result")
2514                                .size(LabelSize::XSmall)
2515                                .color(Color::Muted)
2516                                .buffer_font(cx),
2517                        )
2518                        .child(div().w_full().text_ui_sm(cx).children(
2519                            rendered_tool_use.as_ref().map(|rendered| {
2520                                MarkdownElement::new(
2521                                    rendered.output.clone(),
2522                                    tool_use_markdown_style(window, cx),
2523                                )
2524                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2525                                    copy_button: false,
2526                                    border: false,
2527                                })
2528                                .on_url_click({
2529                                    let workspace = self.workspace.clone();
2530                                    move |text, window, cx| {
2531                                        open_markdown_link(text, workspace.clone(), window, cx);
2532                                    }
2533                                })
2534                                .into_any_element()
2535                            }),
2536                        )),
2537                ),
2538                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2539                    results_content_container()
2540                        .border_t_1()
2541                        .border_color(self.tool_card_border_color(cx))
2542                        .child(
2543                            h_flex()
2544                                .gap_1()
2545                                .child(
2546                                    Icon::new(IconName::ArrowCircle)
2547                                        .size(IconSize::Small)
2548                                        .color(Color::Accent)
2549                                        .with_animation(
2550                                            "arrow-circle",
2551                                            Animation::new(Duration::from_secs(2)).repeat(),
2552                                            |icon, delta| {
2553                                                icon.transform(Transformation::rotate(percentage(
2554                                                    delta,
2555                                                )))
2556                                            },
2557                                        ),
2558                                )
2559                                .child(
2560                                    Label::new("Running…")
2561                                        .size(LabelSize::XSmall)
2562                                        .color(Color::Muted)
2563                                        .buffer_font(cx),
2564                                ),
2565                        ),
2566                ),
2567                ToolUseStatus::Error(_) => container.child(
2568                    results_content_container()
2569                        .border_t_1()
2570                        .border_color(self.tool_card_border_color(cx))
2571                        .child(
2572                            Label::new("Error")
2573                                .size(LabelSize::XSmall)
2574                                .color(Color::Muted)
2575                                .buffer_font(cx),
2576                        )
2577                        .child(
2578                            div()
2579                                .text_ui_sm(cx)
2580                                .children(rendered_tool_use.as_ref().map(|rendered| {
2581                                    MarkdownElement::new(
2582                                        rendered.output.clone(),
2583                                        tool_use_markdown_style(window, cx),
2584                                    )
2585                                    .on_url_click({
2586                                        let workspace = self.workspace.clone();
2587                                        move |text, window, cx| {
2588                                            open_markdown_link(text, workspace.clone(), window, cx);
2589                                        }
2590                                    })
2591                                    .into_any_element()
2592                                })),
2593                        ),
2594                ),
2595                ToolUseStatus::Pending => container,
2596                ToolUseStatus::NeedsConfirmation => container.child(
2597                    results_content_container()
2598                        .border_t_1()
2599                        .border_color(self.tool_card_border_color(cx))
2600                        .child(
2601                            Label::new("Asking Permission")
2602                                .size(LabelSize::Small)
2603                                .color(Color::Muted)
2604                                .buffer_font(cx),
2605                        ),
2606                ),
2607            });
2608
2609        let gradient_overlay = |color: Hsla| {
2610            div()
2611                .h_full()
2612                .absolute()
2613                .w_12()
2614                .bottom_0()
2615                .map(|element| {
2616                    if is_status_finished {
2617                        element.right_6()
2618                    } else {
2619                        element.right(px(44.))
2620                    }
2621                })
2622                .bg(linear_gradient(
2623                    90.,
2624                    linear_color_stop(color, 1.),
2625                    linear_color_stop(color.opacity(0.2), 0.),
2626                ))
2627        };
2628
2629        v_flex().gap_1().mb_2().map(|element| {
2630            if !needs_confirmation_tools {
2631                element.child(
2632                    v_flex()
2633                        .child(
2634                            h_flex()
2635                                .group("disclosure-header")
2636                                .relative()
2637                                .gap_1p5()
2638                                .justify_between()
2639                                .opacity(0.8)
2640                                .hover(|style| style.opacity(1.))
2641                                .when(!is_status_finished, |this| this.pr_2())
2642                                .child(
2643                                    h_flex()
2644                                        .id("tool-label-container")
2645                                        .gap_1p5()
2646                                        .max_w_full()
2647                                        .overflow_x_scroll()
2648                                        .child(
2649                                            Icon::new(tool_use.icon)
2650                                                .size(IconSize::XSmall)
2651                                                .color(Color::Muted),
2652                                        )
2653                                        .child(
2654                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2655                                                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| {
2656                                                    open_markdown_link(text, workspace.clone(), window, cx);
2657                                                }}))
2658                                            ),
2659                                        ),
2660                                )
2661                                .child(
2662                                    h_flex()
2663                                        .gap_1()
2664                                        .child(
2665                                            div().visible_on_hover("disclosure-header").child(
2666                                                Disclosure::new("tool-use-disclosure", is_open)
2667                                                    .opened_icon(IconName::ChevronUp)
2668                                                    .closed_icon(IconName::ChevronDown)
2669                                                    .on_click(cx.listener({
2670                                                        let tool_use_id = tool_use.id.clone();
2671                                                        move |this, _event, _window, _cx| {
2672                                                            let is_open = this
2673                                                                .expanded_tool_uses
2674                                                                .entry(tool_use_id.clone())
2675                                                                .or_insert(false);
2676
2677                                                            *is_open = !*is_open;
2678                                                        }
2679                                                    })),
2680                                            ),
2681                                        )
2682                                        .child(status_icons),
2683                                )
2684                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2685                        )
2686                        .map(|parent| {
2687                            if !is_open {
2688                                return parent;
2689                            }
2690
2691                            parent.child(
2692                                v_flex()
2693                                    .mt_1()
2694                                    .border_1()
2695                                    .border_color(self.tool_card_border_color(cx))
2696                                    .bg(cx.theme().colors().editor_background)
2697                                    .rounded_lg()
2698                                    .child(results_content),
2699                            )
2700                        }),
2701                )
2702            } else {
2703                v_flex()
2704                    .mb_2()
2705                    .rounded_lg()
2706                    .border_1()
2707                    .border_color(self.tool_card_border_color(cx))
2708                    .overflow_hidden()
2709                    .child(
2710                        h_flex()
2711                            .group("disclosure-header")
2712                            .relative()
2713                            .justify_between()
2714                            .py_1()
2715                            .map(|element| {
2716                                if is_status_finished {
2717                                    element.pl_2().pr_0p5()
2718                                } else {
2719                                    element.px_2()
2720                                }
2721                            })
2722                            .bg(self.tool_card_header_bg(cx))
2723                            .map(|element| {
2724                                if is_open {
2725                                    element.border_b_1().rounded_t_md()
2726                                } else if needs_confirmation {
2727                                    element.rounded_t_md()
2728                                } else {
2729                                    element.rounded_md()
2730                                }
2731                            })
2732                            .border_color(self.tool_card_border_color(cx))
2733                            .child(
2734                                h_flex()
2735                                    .id("tool-label-container")
2736                                    .gap_1p5()
2737                                    .max_w_full()
2738                                    .overflow_x_scroll()
2739                                    .child(
2740                                        Icon::new(tool_use.icon)
2741                                            .size(IconSize::XSmall)
2742                                            .color(Color::Muted),
2743                                    )
2744                                    .child(
2745                                        h_flex().pr_8().text_ui_sm(cx).children(
2746                                            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| {
2747                                                open_markdown_link(text, workspace.clone(), window, cx);
2748                                            }}))
2749                                        ),
2750                                    ),
2751                            )
2752                            .child(
2753                                h_flex()
2754                                    .gap_1()
2755                                    .child(
2756                                        div().visible_on_hover("disclosure-header").child(
2757                                            Disclosure::new("tool-use-disclosure", is_open)
2758                                                .opened_icon(IconName::ChevronUp)
2759                                                .closed_icon(IconName::ChevronDown)
2760                                                .on_click(cx.listener({
2761                                                    let tool_use_id = tool_use.id.clone();
2762                                                    move |this, _event, _window, _cx| {
2763                                                        let is_open = this
2764                                                            .expanded_tool_uses
2765                                                            .entry(tool_use_id.clone())
2766                                                            .or_insert(false);
2767
2768                                                        *is_open = !*is_open;
2769                                                    }
2770                                                })),
2771                                        ),
2772                                    )
2773                                    .child(status_icons),
2774                            )
2775                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
2776                    )
2777                    .map(|parent| {
2778                        if !is_open {
2779                            return parent;
2780                        }
2781
2782                        parent.child(
2783                            v_flex()
2784                                .bg(cx.theme().colors().editor_background)
2785                                .map(|element| {
2786                                    if  needs_confirmation {
2787                                        element.rounded_none()
2788                                    } else {
2789                                        element.rounded_b_lg()
2790                                    }
2791                                })
2792                                .child(results_content),
2793                        )
2794                    })
2795                    .when(needs_confirmation, |this| {
2796                        this.child(
2797                            h_flex()
2798                                .py_1()
2799                                .pl_2()
2800                                .pr_1()
2801                                .gap_1()
2802                                .justify_between()
2803                                .bg(cx.theme().colors().editor_background)
2804                                .border_t_1()
2805                                .border_color(self.tool_card_border_color(cx))
2806                                .rounded_b_lg()
2807                                .child(
2808                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
2809                                )
2810                                .child(
2811                                    h_flex()
2812                                        .gap_0p5()
2813                                        .child({
2814                                            let tool_id = tool_use.id.clone();
2815                                            Button::new(
2816                                                "always-allow-tool-action",
2817                                                "Always Allow",
2818                                            )
2819                                            .label_size(LabelSize::Small)
2820                                            .icon(IconName::CheckDouble)
2821                                            .icon_position(IconPosition::Start)
2822                                            .icon_size(IconSize::Small)
2823                                            .icon_color(Color::Success)
2824                                            .tooltip(move |window, cx|  {
2825                                                Tooltip::with_meta(
2826                                                    "Never ask for permission",
2827                                                    None,
2828                                                    "Restore the original behavior in your Agent Panel settings",
2829                                                    window,
2830                                                    cx,
2831                                                )
2832                                            })
2833                                            .on_click(cx.listener(
2834                                                move |this, event, window, cx| {
2835                                                    if let Some(fs) = fs.clone() {
2836                                                        update_settings_file::<AssistantSettings>(
2837                                                            fs.clone(),
2838                                                            cx,
2839                                                            |settings, _| {
2840                                                                settings.set_always_allow_tool_actions(true);
2841                                                            },
2842                                                        );
2843                                                    }
2844                                                    this.handle_allow_tool(
2845                                                        tool_id.clone(),
2846                                                        event,
2847                                                        window,
2848                                                        cx,
2849                                                    )
2850                                                },
2851                                            ))
2852                                        })
2853                                        .child(ui::Divider::vertical())
2854                                        .child({
2855                                            let tool_id = tool_use.id.clone();
2856                                            Button::new("allow-tool-action", "Allow")
2857                                                .label_size(LabelSize::Small)
2858                                                .icon(IconName::Check)
2859                                                .icon_position(IconPosition::Start)
2860                                                .icon_size(IconSize::Small)
2861                                                .icon_color(Color::Success)
2862                                                .on_click(cx.listener(
2863                                                    move |this, event, window, cx| {
2864                                                        this.handle_allow_tool(
2865                                                            tool_id.clone(),
2866                                                            event,
2867                                                            window,
2868                                                            cx,
2869                                                        )
2870                                                    },
2871                                                ))
2872                                        })
2873                                        .child({
2874                                            let tool_id = tool_use.id.clone();
2875                                            let tool_name: Arc<str> = tool_use.name.into();
2876                                            Button::new("deny-tool", "Deny")
2877                                                .label_size(LabelSize::Small)
2878                                                .icon(IconName::Close)
2879                                                .icon_position(IconPosition::Start)
2880                                                .icon_size(IconSize::Small)
2881                                                .icon_color(Color::Error)
2882                                                .on_click(cx.listener(
2883                                                    move |this, event, window, cx| {
2884                                                        this.handle_deny_tool(
2885                                                            tool_id.clone(),
2886                                                            tool_name.clone(),
2887                                                            event,
2888                                                            window,
2889                                                            cx,
2890                                                        )
2891                                                    },
2892                                                ))
2893                                        }),
2894                                ),
2895                        )
2896                    })
2897            }
2898        }).into_any_element()
2899    }
2900
2901    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
2902        let project_context = self.thread.read(cx).project_context();
2903        let project_context = project_context.borrow();
2904        let Some(project_context) = project_context.as_ref() else {
2905            return div().into_any();
2906        };
2907
2908        let user_rules_text = if project_context.user_rules.is_empty() {
2909            None
2910        } else if project_context.user_rules.len() == 1 {
2911            let user_rules = &project_context.user_rules[0];
2912
2913            match user_rules.title.as_ref() {
2914                Some(title) => Some(format!("Using \"{title}\" user rule")),
2915                None => Some("Using user rule".into()),
2916            }
2917        } else {
2918            Some(format!(
2919                "Using {} user rules",
2920                project_context.user_rules.len()
2921            ))
2922        };
2923
2924        let first_user_rules_id = project_context
2925            .user_rules
2926            .first()
2927            .map(|user_rules| user_rules.uuid.0);
2928
2929        let rules_files = project_context
2930            .worktrees
2931            .iter()
2932            .filter_map(|worktree| worktree.rules_file.as_ref())
2933            .collect::<Vec<_>>();
2934
2935        let rules_file_text = match rules_files.as_slice() {
2936            &[] => None,
2937            &[rules_file] => Some(format!(
2938                "Using project {:?} file",
2939                rules_file.path_in_worktree
2940            )),
2941            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
2942        };
2943
2944        if user_rules_text.is_none() && rules_file_text.is_none() {
2945            return div().into_any();
2946        }
2947
2948        v_flex()
2949            .pt_2()
2950            .px_2p5()
2951            .gap_1()
2952            .when_some(user_rules_text, |parent, user_rules_text| {
2953                parent.child(
2954                    h_flex()
2955                        .w_full()
2956                        .child(
2957                            Icon::new(RULES_ICON)
2958                                .size(IconSize::XSmall)
2959                                .color(Color::Disabled),
2960                        )
2961                        .child(
2962                            Label::new(user_rules_text)
2963                                .size(LabelSize::XSmall)
2964                                .color(Color::Muted)
2965                                .truncate()
2966                                .buffer_font(cx)
2967                                .ml_1p5()
2968                                .mr_0p5(),
2969                        )
2970                        .child(
2971                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
2972                                .shape(ui::IconButtonShape::Square)
2973                                .icon_size(IconSize::XSmall)
2974                                .icon_color(Color::Ignored)
2975                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
2976                                .tooltip(Tooltip::text("View User Rules"))
2977                                .on_click(move |_event, window, cx| {
2978                                    window.dispatch_action(
2979                                        Box::new(OpenRulesLibrary {
2980                                            prompt_to_select: first_user_rules_id,
2981                                        }),
2982                                        cx,
2983                                    )
2984                                }),
2985                        ),
2986                )
2987            })
2988            .when_some(rules_file_text, |parent, rules_file_text| {
2989                parent.child(
2990                    h_flex()
2991                        .w_full()
2992                        .child(
2993                            Icon::new(IconName::File)
2994                                .size(IconSize::XSmall)
2995                                .color(Color::Disabled),
2996                        )
2997                        .child(
2998                            Label::new(rules_file_text)
2999                                .size(LabelSize::XSmall)
3000                                .color(Color::Muted)
3001                                .buffer_font(cx)
3002                                .ml_1p5()
3003                                .mr_0p5(),
3004                        )
3005                        .child(
3006                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3007                                .shape(ui::IconButtonShape::Square)
3008                                .icon_size(IconSize::XSmall)
3009                                .icon_color(Color::Ignored)
3010                                .on_click(cx.listener(Self::handle_open_rules))
3011                                .tooltip(Tooltip::text("View Rules")),
3012                        ),
3013                )
3014            })
3015            .into_any()
3016    }
3017
3018    fn handle_allow_tool(
3019        &mut self,
3020        tool_use_id: LanguageModelToolUseId,
3021        _: &ClickEvent,
3022        window: &mut Window,
3023        cx: &mut Context<Self>,
3024    ) {
3025        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3026            .thread
3027            .read(cx)
3028            .pending_tool(&tool_use_id)
3029            .map(|tool_use| tool_use.status.clone())
3030        {
3031            self.thread.update(cx, |thread, cx| {
3032                thread.run_tool(
3033                    c.tool_use_id.clone(),
3034                    c.ui_text.clone(),
3035                    c.input.clone(),
3036                    &c.messages,
3037                    c.tool.clone(),
3038                    Some(window.window_handle()),
3039                    cx,
3040                );
3041            });
3042        }
3043    }
3044
3045    fn handle_deny_tool(
3046        &mut self,
3047        tool_use_id: LanguageModelToolUseId,
3048        tool_name: Arc<str>,
3049        _: &ClickEvent,
3050        window: &mut Window,
3051        cx: &mut Context<Self>,
3052    ) {
3053        let window_handle = window.window_handle();
3054        self.thread.update(cx, |thread, cx| {
3055            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3056        });
3057    }
3058
3059    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3060        let project_context = self.thread.read(cx).project_context();
3061        let project_context = project_context.borrow();
3062        let Some(project_context) = project_context.as_ref() else {
3063            return;
3064        };
3065
3066        let project_entry_ids = project_context
3067            .worktrees
3068            .iter()
3069            .flat_map(|worktree| worktree.rules_file.as_ref())
3070            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3071            .collect::<Vec<_>>();
3072
3073        self.workspace
3074            .update(cx, move |workspace, cx| {
3075                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3076                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3077                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3078                let project = workspace.project().read(cx);
3079                let project_paths = project_entry_ids
3080                    .into_iter()
3081                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3082                    .collect::<Vec<_>>();
3083                for project_path in project_paths {
3084                    workspace
3085                        .open_path(project_path, None, true, window, cx)
3086                        .detach_and_log_err(cx);
3087                }
3088            })
3089            .ok();
3090    }
3091
3092    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3093        for window in self.notifications.drain(..) {
3094            window
3095                .update(cx, |_, window, _| {
3096                    window.remove_window();
3097                })
3098                .ok();
3099
3100            self.notification_subscriptions.remove(&window);
3101        }
3102    }
3103
3104    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3105        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3106            return None;
3107        }
3108
3109        Some(
3110            div()
3111                .occlude()
3112                .id("active-thread-scrollbar")
3113                .on_mouse_move(cx.listener(|_, _, _, cx| {
3114                    cx.notify();
3115                    cx.stop_propagation()
3116                }))
3117                .on_hover(|_, _, cx| {
3118                    cx.stop_propagation();
3119                })
3120                .on_any_mouse_down(|_, _, cx| {
3121                    cx.stop_propagation();
3122                })
3123                .on_mouse_up(
3124                    MouseButton::Left,
3125                    cx.listener(|_, _, _, cx| {
3126                        cx.stop_propagation();
3127                    }),
3128                )
3129                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3130                    cx.notify();
3131                }))
3132                .h_full()
3133                .absolute()
3134                .right_1()
3135                .top_1()
3136                .bottom_0()
3137                .w(px(12.))
3138                .cursor_default()
3139                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3140        )
3141    }
3142
3143    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3144        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3145        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3146            cx.background_executor()
3147                .timer(SCROLLBAR_SHOW_INTERVAL)
3148                .await;
3149            thread
3150                .update(cx, |thread, cx| {
3151                    if !thread.scrollbar_state.is_dragging() {
3152                        thread.show_scrollbar = false;
3153                        cx.notify();
3154                    }
3155                })
3156                .log_err();
3157        }))
3158    }
3159}
3160
3161pub enum ActiveThreadEvent {
3162    EditingMessageTokenCountChanged,
3163}
3164
3165impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3166
3167impl Render for ActiveThread {
3168    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3169        v_flex()
3170            .size_full()
3171            .relative()
3172            .on_mouse_move(cx.listener(|this, _, _, cx| {
3173                this.show_scrollbar = true;
3174                this.hide_scrollbar_later(cx);
3175                cx.notify();
3176            }))
3177            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3178                this.show_scrollbar = true;
3179                this.hide_scrollbar_later(cx);
3180                cx.notify();
3181            }))
3182            .on_mouse_up(
3183                MouseButton::Left,
3184                cx.listener(|this, _, _, cx| {
3185                    this.hide_scrollbar_later(cx);
3186                }),
3187            )
3188            .child(list(self.list_state.clone()).flex_grow())
3189            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3190                this.child(scrollbar)
3191            })
3192    }
3193}
3194
3195pub(crate) fn open_context(
3196    context: &AgentContextHandle,
3197    workspace: Entity<Workspace>,
3198    window: &mut Window,
3199    cx: &mut App,
3200) {
3201    match context {
3202        AgentContextHandle::File(file_context) => {
3203            if let Some(project_path) = file_context.project_path(cx) {
3204                workspace.update(cx, |workspace, cx| {
3205                    workspace
3206                        .open_path(project_path, None, true, window, cx)
3207                        .detach_and_log_err(cx);
3208                });
3209            }
3210        }
3211
3212        AgentContextHandle::Directory(directory_context) => {
3213            let entry_id = directory_context.entry_id;
3214            workspace.update(cx, |workspace, cx| {
3215                workspace.project().update(cx, |_project, cx| {
3216                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3217                })
3218            })
3219        }
3220
3221        AgentContextHandle::Symbol(symbol_context) => {
3222            let buffer = symbol_context.buffer.read(cx);
3223            if let Some(project_path) = buffer.project_path(cx) {
3224                let snapshot = buffer.snapshot();
3225                let target_position = symbol_context.range.start.to_point(&snapshot);
3226                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3227                    .detach();
3228            }
3229        }
3230
3231        AgentContextHandle::Selection(selection_context) => {
3232            let buffer = selection_context.buffer.read(cx);
3233            if let Some(project_path) = buffer.project_path(cx) {
3234                let snapshot = buffer.snapshot();
3235                let target_position = selection_context.range.start.to_point(&snapshot);
3236
3237                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3238                    .detach();
3239            }
3240        }
3241
3242        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3243            cx.open_url(&fetched_url_context.url);
3244        }
3245
3246        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3247            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3248                panel.update(cx, |panel, cx| {
3249                    let thread_id = thread_context.thread.read(cx).id().clone();
3250                    panel
3251                        .open_thread(&thread_id, window, cx)
3252                        .detach_and_log_err(cx)
3253                });
3254            }
3255        }),
3256
3257        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3258            Box::new(OpenRulesLibrary {
3259                prompt_to_select: Some(rules_context.prompt_id.0),
3260            }),
3261            cx,
3262        ),
3263
3264        AgentContextHandle::Image(_) => {}
3265    }
3266}
3267
3268fn open_editor_at_position(
3269    project_path: project::ProjectPath,
3270    target_position: Point,
3271    workspace: &Entity<Workspace>,
3272    window: &mut Window,
3273    cx: &mut App,
3274) -> Task<()> {
3275    let open_task = workspace.update(cx, |workspace, cx| {
3276        workspace.open_path(project_path, None, true, window, cx)
3277    });
3278    window.spawn(cx, async move |cx| {
3279        if let Some(active_editor) = open_task
3280            .await
3281            .log_err()
3282            .and_then(|item| item.downcast::<Editor>())
3283        {
3284            active_editor
3285                .downgrade()
3286                .update_in(cx, |editor, window, cx| {
3287                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3288                })
3289                .log_err();
3290        }
3291    })
3292}