active_thread.rs

   1use crate::context::{AgentContextHandle, RULES_ICON};
   2use crate::context_picker::{ContextPicker, MentionLink};
   3use crate::context_store::ContextStore;
   4use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
   5use crate::message_editor::insert_message_creases;
   6use crate::thread::{
   7    LastRestoreCheckpoint, MessageCrease, MessageId, MessageSegment, Thread, ThreadError,
   8    ThreadEvent, ThreadFeedback,
   9};
  10use crate::thread_store::{RulesLoadingError, ThreadStore};
  11use crate::tool_use::{PendingToolUseStatus, ToolUse};
  12use crate::ui::{
  13    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
  14};
  15use crate::{AssistantPanel, OpenActiveThreadAsMarkdown};
  16use anyhow::Context as _;
  17use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
  18use assistant_tool::ToolUseStatus;
  19use collections::{HashMap, HashSet};
  20use editor::actions::{MoveUp, Paste};
  21use editor::scroll::Autoscroll;
  22use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer};
  23use gpui::{
  24    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardEntry,
  25    ClipboardItem, DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla,
  26    ListAlignment, ListState, MouseButton, PlatformDisplay, ScrollHandle, Stateful,
  27    StyleRefinement, Subscription, Task, TextStyle, TextStyleRefinement, Transformation,
  28    UnderlineStyle, WeakEntity, WindowHandle, linear_color_stop, linear_gradient, list, percentage,
  29    pulsating_between,
  30};
  31use language::{Buffer, Language, LanguageRegistry};
  32use language_model::{
  33    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, RequestUsage, Role,
  34    StopReason,
  35};
  36use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  37use markdown::{HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
  38use project::{ProjectEntryId, ProjectItem as _};
  39use rope::Point;
  40use settings::{Settings as _, update_settings_file};
  41use std::ffi::OsStr;
  42use std::path::Path;
  43use std::rc::Rc;
  44use std::sync::Arc;
  45use std::time::Duration;
  46use text::ToPoint;
  47use theme::ThemeSettings;
  48use ui::{
  49    Disclosure, IconButton, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize,
  50    Tooltip, prelude::*,
  51};
  52use util::ResultExt as _;
  53use util::markdown::MarkdownCodeBlock;
  54use workspace::Workspace;
  55use zed_actions::assistant::OpenRulesLibrary;
  56
  57pub struct ActiveThread {
  58    context_store: Entity<ContextStore>,
  59    language_registry: Arc<LanguageRegistry>,
  60    thread_store: Entity<ThreadStore>,
  61    thread: Entity<Thread>,
  62    workspace: WeakEntity<Workspace>,
  63    save_thread_task: Option<Task<()>>,
  64    messages: Vec<MessageId>,
  65    list_state: ListState,
  66    scrollbar_state: ScrollbarState,
  67    show_scrollbar: bool,
  68    hide_scrollbar_task: Option<Task<()>>,
  69    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  70    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  71    editing_message: Option<(MessageId, EditingMessageState)>,
  72    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  73    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  74    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  75    last_error: Option<ThreadError>,
  76    last_usage: Option<RequestUsage>,
  77    notifications: Vec<WindowHandle<AgentNotification>>,
  78    copied_code_block_ids: HashSet<(MessageId, usize)>,
  79    _subscriptions: Vec<Subscription>,
  80    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  81    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  82    _load_edited_message_context_task: Option<Task<()>>,
  83}
  84
  85struct RenderedMessage {
  86    language_registry: Arc<LanguageRegistry>,
  87    segments: Vec<RenderedMessageSegment>,
  88}
  89
  90#[derive(Clone)]
  91struct RenderedToolUse {
  92    label: Entity<Markdown>,
  93    input: Entity<Markdown>,
  94    output: Entity<Markdown>,
  95}
  96
  97impl RenderedMessage {
  98    fn from_segments(
  99        segments: &[MessageSegment],
 100        language_registry: Arc<LanguageRegistry>,
 101        cx: &mut App,
 102    ) -> Self {
 103        let mut this = Self {
 104            language_registry,
 105            segments: Vec::with_capacity(segments.len()),
 106        };
 107        for segment in segments {
 108            this.push_segment(segment, cx);
 109        }
 110        this
 111    }
 112
 113    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 114        if let Some(RenderedMessageSegment::Thinking {
 115            content,
 116            scroll_handle,
 117        }) = self.segments.last_mut()
 118        {
 119            content.update(cx, |markdown, cx| {
 120                markdown.append(text, cx);
 121            });
 122            scroll_handle.scroll_to_bottom();
 123        } else {
 124            self.segments.push(RenderedMessageSegment::Thinking {
 125                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 126                scroll_handle: ScrollHandle::default(),
 127            });
 128        }
 129    }
 130
 131    fn append_text(&mut self, text: &String, cx: &mut App) {
 132        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 133            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 134        } else {
 135            self.segments
 136                .push(RenderedMessageSegment::Text(parse_markdown(
 137                    SharedString::from(text),
 138                    self.language_registry.clone(),
 139                    cx,
 140                )));
 141        }
 142    }
 143
 144    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 145        match segment {
 146            MessageSegment::Thinking { text, .. } => {
 147                self.segments.push(RenderedMessageSegment::Thinking {
 148                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 149                    scroll_handle: ScrollHandle::default(),
 150                })
 151            }
 152            MessageSegment::Text(text) => {
 153                self.segments
 154                    .push(RenderedMessageSegment::Text(parse_markdown(
 155                        text.into(),
 156                        self.language_registry.clone(),
 157                        cx,
 158                    )))
 159            }
 160            MessageSegment::RedactedThinking(_) => {}
 161        };
 162    }
 163}
 164
 165enum RenderedMessageSegment {
 166    Thinking {
 167        content: Entity<Markdown>,
 168        scroll_handle: ScrollHandle,
 169    },
 170    Text(Entity<Markdown>),
 171}
 172
 173fn parse_markdown(
 174    text: SharedString,
 175    language_registry: Arc<LanguageRegistry>,
 176    cx: &mut App,
 177) -> Entity<Markdown> {
 178    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 179}
 180
 181fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 182    let theme_settings = ThemeSettings::get_global(cx);
 183    let colors = cx.theme().colors();
 184    let ui_font_size = TextSize::Default.rems(cx);
 185    let buffer_font_size = TextSize::Small.rems(cx);
 186    let mut text_style = window.text_style();
 187
 188    text_style.refine(&TextStyleRefinement {
 189        font_family: Some(theme_settings.ui_font.family.clone()),
 190        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 191        font_features: Some(theme_settings.ui_font.features.clone()),
 192        font_size: Some(ui_font_size.into()),
 193        color: Some(cx.theme().colors().text),
 194        ..Default::default()
 195    });
 196
 197    MarkdownStyle {
 198        base_text_style: text_style.clone(),
 199        syntax: cx.theme().syntax().clone(),
 200        selection_background_color: cx.theme().players().local().selection,
 201        code_block_overflow_x_scroll: true,
 202        table_overflow_x_scroll: true,
 203        heading_level_styles: Some(HeadingLevelStyles {
 204            h1: Some(TextStyleRefinement {
 205                font_size: Some(rems(1.15).into()),
 206                ..Default::default()
 207            }),
 208            h2: Some(TextStyleRefinement {
 209                font_size: Some(rems(1.1).into()),
 210                ..Default::default()
 211            }),
 212            h3: Some(TextStyleRefinement {
 213                font_size: Some(rems(1.05).into()),
 214                ..Default::default()
 215            }),
 216            h4: Some(TextStyleRefinement {
 217                font_size: Some(rems(1.).into()),
 218                ..Default::default()
 219            }),
 220            h5: Some(TextStyleRefinement {
 221                font_size: Some(rems(0.95).into()),
 222                ..Default::default()
 223            }),
 224            h6: Some(TextStyleRefinement {
 225                font_size: Some(rems(0.875).into()),
 226                ..Default::default()
 227            }),
 228        }),
 229        code_block: StyleRefinement {
 230            padding: EdgesRefinement {
 231                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 232                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 233                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 234                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 235            },
 236            background: Some(colors.editor_background.into()),
 237            text: Some(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                ..Default::default()
 243            }),
 244            ..Default::default()
 245        },
 246        inline_code: TextStyleRefinement {
 247            font_family: Some(theme_settings.buffer_font.family.clone()),
 248            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 249            font_features: Some(theme_settings.buffer_font.features.clone()),
 250            font_size: Some(buffer_font_size.into()),
 251            background_color: Some(colors.editor_foreground.opacity(0.08)),
 252            ..Default::default()
 253        },
 254        link: TextStyleRefinement {
 255            background_color: Some(colors.editor_foreground.opacity(0.025)),
 256            underline: Some(UnderlineStyle {
 257                color: Some(colors.text_accent.opacity(0.5)),
 258                thickness: px(1.),
 259                ..Default::default()
 260            }),
 261            ..Default::default()
 262        },
 263        link_callback: Some(Rc::new(move |url, cx| {
 264            if MentionLink::is_valid(url) {
 265                let colors = cx.theme().colors();
 266                Some(TextStyleRefinement {
 267                    background_color: Some(colors.element_background),
 268                    ..Default::default()
 269                })
 270            } else {
 271                None
 272            }
 273        })),
 274        ..Default::default()
 275    }
 276}
 277
 278fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 279    let theme_settings = ThemeSettings::get_global(cx);
 280    let colors = cx.theme().colors();
 281    let ui_font_size = TextSize::Default.rems(cx);
 282    let buffer_font_size = TextSize::Small.rems(cx);
 283    let mut text_style = window.text_style();
 284
 285    text_style.refine(&TextStyleRefinement {
 286        font_family: Some(theme_settings.ui_font.family.clone()),
 287        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 288        font_features: Some(theme_settings.ui_font.features.clone()),
 289        font_size: Some(ui_font_size.into()),
 290        color: Some(cx.theme().colors().text),
 291        ..Default::default()
 292    });
 293
 294    MarkdownStyle {
 295        base_text_style: text_style,
 296        syntax: cx.theme().syntax().clone(),
 297        selection_background_color: cx.theme().players().local().selection,
 298        code_block_overflow_x_scroll: true,
 299        code_block: StyleRefinement {
 300            margin: EdgesRefinement::default(),
 301            padding: EdgesRefinement::default(),
 302            background: Some(colors.editor_background.into()),
 303            border_color: None,
 304            border_widths: EdgesRefinement::default(),
 305            text: Some(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(buffer_font_size.into()),
 310                ..Default::default()
 311            }),
 312            ..Default::default()
 313        },
 314        inline_code: TextStyleRefinement {
 315            font_family: Some(theme_settings.buffer_font.family.clone()),
 316            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 317            font_features: Some(theme_settings.buffer_font.features.clone()),
 318            font_size: Some(TextSize::XSmall.rems(cx).into()),
 319            ..Default::default()
 320        },
 321        heading: StyleRefinement {
 322            text: Some(TextStyleRefinement {
 323                font_size: Some(ui_font_size.into()),
 324                ..Default::default()
 325            }),
 326            ..Default::default()
 327        },
 328        ..Default::default()
 329    }
 330}
 331
 332const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 10;
 333
 334fn render_markdown_code_block(
 335    message_id: MessageId,
 336    ix: usize,
 337    kind: &CodeBlockKind,
 338    parsed_markdown: &ParsedMarkdown,
 339    metadata: CodeBlockMetadata,
 340    active_thread: Entity<ActiveThread>,
 341    workspace: WeakEntity<Workspace>,
 342    _window: &Window,
 343    cx: &App,
 344) -> Div {
 345    let label = match kind {
 346        CodeBlockKind::Indented => None,
 347        CodeBlockKind::Fenced => Some(
 348            h_flex()
 349                .gap_1()
 350                .child(
 351                    Icon::new(IconName::Code)
 352                        .color(Color::Muted)
 353                        .size(IconSize::XSmall),
 354                )
 355                .child(Label::new("untitled").size(LabelSize::Small))
 356                .into_any_element(),
 357        ),
 358        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 359            parsed_markdown.languages_by_name.get(raw_language_name),
 360            raw_language_name.clone(),
 361            cx,
 362        )),
 363        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 364            // We tell the model to use /dev/null for the path instead of using ```language
 365            // because otherwise it consistently fails to use code citations.
 366            if path_range.path.starts_with("/dev/null") {
 367                let ext = path_range
 368                    .path
 369                    .extension()
 370                    .and_then(OsStr::to_str)
 371                    .map(|str| SharedString::new(str.to_string()))
 372                    .unwrap_or_default();
 373
 374                render_code_language(
 375                    parsed_markdown
 376                        .languages_by_path
 377                        .get(&path_range.path)
 378                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 379                    ext,
 380                    cx,
 381                )
 382            } else {
 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())
 389                                .size(LabelSize::Small),
 390                        )
 391                        .child(
 392                            Label::new(parent.to_string_lossy().to_string())
 393                                .color(Color::Muted)
 394                                .size(LabelSize::Small),
 395                        )
 396                        .into_any_element()
 397                } else {
 398                    Label::new(path_range.path.to_string_lossy().to_string())
 399                        .size(LabelSize::Small)
 400                        .ml_1()
 401                        .into_any_element()
 402                };
 403
 404                h_flex()
 405                    .id(("code-block-header-label", ix))
 406                    .w_full()
 407                    .max_w_full()
 408                    .px_1()
 409                    .gap_0p5()
 410                    .cursor_pointer()
 411                    .rounded_sm()
 412                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 413                    .tooltip(Tooltip::text("Jump to File"))
 414                    .child(
 415                        h_flex()
 416                            .gap_0p5()
 417                            .children(
 418                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 419                                    .map(Icon::from_path)
 420                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 421                            )
 422                            .child(content)
 423                            .child(
 424                                Icon::new(IconName::ArrowUpRight)
 425                                    .size(IconSize::XSmall)
 426                                    .color(Color::Ignored),
 427                            ),
 428                    )
 429                    .on_click({
 430                        let path_range = path_range.clone();
 431                        move |_, window, cx| {
 432                            workspace
 433                                .update(cx, {
 434                                    |workspace, cx| {
 435                                        let Some(project_path) = workspace
 436                                            .project()
 437                                            .read(cx)
 438                                            .find_project_path(&path_range.path, cx)
 439                                        else {
 440                                            return;
 441                                        };
 442                                        let Some(target) = path_range.range.as_ref().map(|range| {
 443                                            Point::new(
 444                                                // Line number is 1-based
 445                                                range.start.line.saturating_sub(1),
 446                                                range.start.col.unwrap_or(0),
 447                                            )
 448                                        }) else {
 449                                            return;
 450                                        };
 451                                        let open_task = workspace.open_path(
 452                                            project_path,
 453                                            None,
 454                                            true,
 455                                            window,
 456                                            cx,
 457                                        );
 458                                        window
 459                                            .spawn(cx, async move |cx| {
 460                                                let item = open_task.await?;
 461                                                if let Some(active_editor) =
 462                                                    item.downcast::<Editor>()
 463                                                {
 464                                                    active_editor
 465                                                        .update_in(cx, |editor, window, cx| {
 466                                                            editor.go_to_singleton_buffer_point(
 467                                                                target, window, cx,
 468                                                            );
 469                                                        })
 470                                                        .ok();
 471                                                }
 472                                                anyhow::Ok(())
 473                                            })
 474                                            .detach_and_log_err(cx);
 475                                    }
 476                                })
 477                                .ok();
 478                        }
 479                    })
 480                    .into_any_element()
 481            }
 482        }),
 483    };
 484
 485    let codeblock_was_copied = active_thread
 486        .read(cx)
 487        .copied_code_block_ids
 488        .contains(&(message_id, ix));
 489
 490    let is_expanded = active_thread
 491        .read(cx)
 492        .expanded_code_blocks
 493        .get(&(message_id, ix))
 494        .copied()
 495        .unwrap_or(true);
 496
 497    let codeblock_header_bg = cx
 498        .theme()
 499        .colors()
 500        .element_background
 501        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 502
 503    let codeblock_header = h_flex()
 504        .py_1()
 505        .pl_1p5()
 506        .pr_1()
 507        .gap_1()
 508        .justify_between()
 509        .border_b_1()
 510        .border_color(cx.theme().colors().border.opacity(0.6))
 511        .bg(codeblock_header_bg)
 512        .rounded_t_md()
 513        .children(label)
 514        .child(
 515            h_flex()
 516                .visible_on_hover("codeblock_container")
 517                .gap_1()
 518                .child(
 519                    IconButton::new(
 520                        ("copy-markdown-code", ix),
 521                        if codeblock_was_copied {
 522                            IconName::Check
 523                        } else {
 524                            IconName::Copy
 525                        },
 526                    )
 527                    .icon_color(Color::Muted)
 528                    .shape(ui::IconButtonShape::Square)
 529                    .tooltip(Tooltip::text("Copy Code"))
 530                    .on_click({
 531                        let active_thread = active_thread.clone();
 532                        let parsed_markdown = parsed_markdown.clone();
 533                        let code_block_range = metadata.content_range.clone();
 534                        move |_event, _window, cx| {
 535                            active_thread.update(cx, |this, cx| {
 536                                this.copied_code_block_ids.insert((message_id, ix));
 537
 538                                let code =
 539                                    parsed_markdown.source()[code_block_range.clone()].to_string();
 540                                cx.write_to_clipboard(ClipboardItem::new_string(code));
 541
 542                                cx.spawn(async move |this, cx| {
 543                                    cx.background_executor().timer(Duration::from_secs(2)).await;
 544
 545                                    cx.update(|cx| {
 546                                        this.update(cx, |this, cx| {
 547                                            this.copied_code_block_ids.remove(&(message_id, ix));
 548                                            cx.notify();
 549                                        })
 550                                    })
 551                                    .ok();
 552                                })
 553                                .detach();
 554                            });
 555                        }
 556                    }),
 557                )
 558                .when(
 559                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 560                    |header| {
 561                        header.child(
 562                            IconButton::new(
 563                                ("expand-collapse-code", ix),
 564                                if is_expanded {
 565                                    IconName::ChevronUp
 566                                } else {
 567                                    IconName::ChevronDown
 568                                },
 569                            )
 570                            .icon_color(Color::Muted)
 571                            .shape(ui::IconButtonShape::Square)
 572                            .tooltip(Tooltip::text(if is_expanded {
 573                                "Collapse Code"
 574                            } else {
 575                                "Expand Code"
 576                            }))
 577                            .on_click({
 578                                let active_thread = active_thread.clone();
 579                                move |_event, _window, cx| {
 580                                    active_thread.update(cx, |this, cx| {
 581                                        let is_expanded = this
 582                                            .expanded_code_blocks
 583                                            .entry((message_id, ix))
 584                                            .or_insert(true);
 585                                        *is_expanded = !*is_expanded;
 586                                        cx.notify();
 587                                    });
 588                                }
 589                            }),
 590                        )
 591                    },
 592                ),
 593        );
 594
 595    v_flex()
 596        .group("codeblock_container")
 597        .my_2()
 598        .overflow_hidden()
 599        .rounded_lg()
 600        .border_1()
 601        .border_color(cx.theme().colors().border.opacity(0.6))
 602        .bg(cx.theme().colors().editor_background)
 603        .child(codeblock_header)
 604        .when(
 605            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 606            |this| {
 607                if is_expanded {
 608                    this.h_full()
 609                } else {
 610                    this.max_h_80()
 611                }
 612            },
 613        )
 614}
 615
 616fn render_code_language(
 617    language: Option<&Arc<Language>>,
 618    name_fallback: SharedString,
 619    cx: &App,
 620) -> AnyElement {
 621    let icon_path = language.and_then(|language| {
 622        language
 623            .config()
 624            .matcher
 625            .path_suffixes
 626            .iter()
 627            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 628            .map(Icon::from_path)
 629    });
 630
 631    let language_label = language
 632        .map(|language| language.name().into())
 633        .unwrap_or(name_fallback);
 634
 635    h_flex()
 636        .gap_1()
 637        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::Small)))
 638        .child(Label::new(language_label).size(LabelSize::Small))
 639        .into_any_element()
 640}
 641
 642fn open_markdown_link(
 643    text: SharedString,
 644    workspace: WeakEntity<Workspace>,
 645    window: &mut Window,
 646    cx: &mut App,
 647) {
 648    let Some(workspace) = workspace.upgrade() else {
 649        cx.open_url(&text);
 650        return;
 651    };
 652
 653    match MentionLink::try_parse(&text, &workspace, cx) {
 654        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 655            if entry.is_dir() {
 656                workspace.project().update(cx, |_, cx| {
 657                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 658                })
 659            } else {
 660                workspace
 661                    .open_path(path, None, true, window, cx)
 662                    .detach_and_log_err(cx);
 663            }
 664        }),
 665        Some(MentionLink::Symbol(path, symbol_name)) => {
 666            let open_task = workspace.update(cx, |workspace, cx| {
 667                workspace.open_path(path, None, true, window, cx)
 668            });
 669            window
 670                .spawn(cx, async move |cx| {
 671                    let active_editor = open_task
 672                        .await?
 673                        .downcast::<Editor>()
 674                        .context("Item is not an editor")?;
 675                    active_editor.update_in(cx, |editor, window, cx| {
 676                        let symbol_range = editor
 677                            .buffer()
 678                            .read(cx)
 679                            .snapshot(cx)
 680                            .outline(None)
 681                            .and_then(|outline| {
 682                                outline
 683                                    .find_most_similar(&symbol_name)
 684                                    .map(|(_, item)| item.range.clone())
 685                            })
 686                            .context("Could not find matching symbol")?;
 687
 688                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 689                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 690                        });
 691                        anyhow::Ok(())
 692                    })
 693                })
 694                .detach_and_log_err(cx);
 695        }
 696        Some(MentionLink::Selection(path, line_range)) => {
 697            let open_task = workspace.update(cx, |workspace, cx| {
 698                workspace.open_path(path, None, true, window, cx)
 699            });
 700            window
 701                .spawn(cx, async move |cx| {
 702                    let active_editor = open_task
 703                        .await?
 704                        .downcast::<Editor>()
 705                        .context("Item is not an editor")?;
 706                    active_editor.update_in(cx, |editor, window, cx| {
 707                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 708                            s.select_ranges([Point::new(line_range.start as u32, 0)
 709                                ..Point::new(line_range.start as u32, 0)])
 710                        });
 711                        anyhow::Ok(())
 712                    })
 713                })
 714                .detach_and_log_err(cx);
 715        }
 716        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 717            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 718                panel.update(cx, |panel, cx| {
 719                    panel
 720                        .open_thread_by_id(&thread_id, window, cx)
 721                        .detach_and_log_err(cx)
 722                });
 723            }
 724        }),
 725        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 726        Some(MentionLink::Rules(prompt_id)) => window.dispatch_action(
 727            Box::new(OpenRulesLibrary {
 728                prompt_to_select: Some(prompt_id.0),
 729            }),
 730            cx,
 731        ),
 732        None => cx.open_url(&text),
 733    }
 734}
 735
 736struct EditingMessageState {
 737    editor: Entity<Editor>,
 738    context_strip: Entity<ContextStrip>,
 739    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 740    last_estimated_token_count: Option<usize>,
 741    _subscriptions: [Subscription; 2],
 742    _update_token_count_task: Option<Task<()>>,
 743}
 744
 745impl ActiveThread {
 746    pub fn new(
 747        thread: Entity<Thread>,
 748        thread_store: Entity<ThreadStore>,
 749        context_store: Entity<ContextStore>,
 750        language_registry: Arc<LanguageRegistry>,
 751        workspace: WeakEntity<Workspace>,
 752        window: &mut Window,
 753        cx: &mut Context<Self>,
 754    ) -> Self {
 755        let subscriptions = vec![
 756            cx.observe(&thread, |_, _, cx| cx.notify()),
 757            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 758            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 759        ];
 760
 761        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 762            let this = cx.entity().downgrade();
 763            move |ix, window: &mut Window, cx: &mut App| {
 764                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 765                    .unwrap()
 766            }
 767        });
 768        let mut this = Self {
 769            language_registry,
 770            thread_store,
 771            context_store,
 772            thread: thread.clone(),
 773            workspace,
 774            save_thread_task: None,
 775            messages: Vec::new(),
 776            rendered_messages_by_id: HashMap::default(),
 777            rendered_tool_uses: HashMap::default(),
 778            expanded_tool_uses: HashMap::default(),
 779            expanded_thinking_segments: HashMap::default(),
 780            expanded_code_blocks: HashMap::default(),
 781            list_state: list_state.clone(),
 782            scrollbar_state: ScrollbarState::new(list_state),
 783            show_scrollbar: false,
 784            hide_scrollbar_task: None,
 785            editing_message: None,
 786            last_error: None,
 787            last_usage: None,
 788            copied_code_block_ids: HashSet::default(),
 789            notifications: Vec::new(),
 790            _subscriptions: subscriptions,
 791            notification_subscriptions: HashMap::default(),
 792            open_feedback_editors: HashMap::default(),
 793            _load_edited_message_context_task: None,
 794        };
 795
 796        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 797            this.push_message(&message.id, &message.segments, window, cx);
 798
 799            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 800                this.render_tool_use_markdown(
 801                    tool_use.id.clone(),
 802                    tool_use.ui_text.clone(),
 803                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 804                    tool_use.status.text(),
 805                    cx,
 806                );
 807            }
 808        }
 809
 810        this
 811    }
 812
 813    pub fn thread(&self) -> &Entity<Thread> {
 814        &self.thread
 815    }
 816
 817    pub fn is_empty(&self) -> bool {
 818        self.messages.is_empty()
 819    }
 820
 821    pub fn summary(&self, cx: &App) -> Option<SharedString> {
 822        self.thread.read(cx).summary()
 823    }
 824
 825    pub fn summary_or_default(&self, cx: &App) -> SharedString {
 826        self.thread.read(cx).summary_or_default()
 827    }
 828
 829    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 830        self.last_error.take();
 831        self.thread.update(cx, |thread, cx| {
 832            thread.cancel_last_completion(Some(window.window_handle()), cx)
 833        })
 834    }
 835
 836    pub fn last_error(&self) -> Option<ThreadError> {
 837        self.last_error.clone()
 838    }
 839
 840    pub fn clear_last_error(&mut self) {
 841        self.last_error.take();
 842    }
 843
 844    pub fn last_usage(&self) -> Option<RequestUsage> {
 845        self.last_usage
 846    }
 847
 848    /// Returns the editing message id and the estimated token count in the content
 849    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
 850        self.editing_message
 851            .as_ref()
 852            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 853    }
 854
 855    fn push_message(
 856        &mut self,
 857        id: &MessageId,
 858        segments: &[MessageSegment],
 859        _window: &mut Window,
 860        cx: &mut Context<Self>,
 861    ) {
 862        let old_len = self.messages.len();
 863        self.messages.push(*id);
 864        self.list_state.splice(old_len..old_len, 1);
 865
 866        let rendered_message =
 867            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 868        self.rendered_messages_by_id.insert(*id, rendered_message);
 869    }
 870
 871    fn edited_message(
 872        &mut self,
 873        id: &MessageId,
 874        segments: &[MessageSegment],
 875        _window: &mut Window,
 876        cx: &mut Context<Self>,
 877    ) {
 878        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 879            return;
 880        };
 881        self.list_state.splice(index..index + 1, 1);
 882        let rendered_message =
 883            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 884        self.rendered_messages_by_id.insert(*id, rendered_message);
 885    }
 886
 887    fn deleted_message(&mut self, id: &MessageId) {
 888        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 889            return;
 890        };
 891        self.messages.remove(index);
 892        self.list_state.splice(index..index + 1, 0);
 893        self.rendered_messages_by_id.remove(id);
 894    }
 895
 896    fn render_tool_use_markdown(
 897        &mut self,
 898        tool_use_id: LanguageModelToolUseId,
 899        tool_label: impl Into<SharedString>,
 900        tool_input: &str,
 901        tool_output: SharedString,
 902        cx: &mut Context<Self>,
 903    ) {
 904        let rendered = self
 905            .rendered_tool_uses
 906            .entry(tool_use_id.clone())
 907            .or_insert_with(|| RenderedToolUse {
 908                label: cx.new(|cx| {
 909                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 910                }),
 911                input: cx.new(|cx| {
 912                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 913                }),
 914                output: cx.new(|cx| {
 915                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 916                }),
 917            });
 918
 919        rendered.label.update(cx, |this, cx| {
 920            this.replace(tool_label, cx);
 921        });
 922        rendered.input.update(cx, |this, cx| {
 923            this.replace(
 924                MarkdownCodeBlock {
 925                    tag: "json",
 926                    text: tool_input,
 927                }
 928                .to_string(),
 929                cx,
 930            );
 931        });
 932        rendered.output.update(cx, |this, cx| {
 933            this.replace(tool_output, cx);
 934        });
 935    }
 936
 937    fn handle_thread_event(
 938        &mut self,
 939        _thread: &Entity<Thread>,
 940        event: &ThreadEvent,
 941        window: &mut Window,
 942        cx: &mut Context<Self>,
 943    ) {
 944        match event {
 945            ThreadEvent::CancelEditing => {
 946                if self.editing_message.is_some() {
 947                    self.cancel_editing_message(&menu::Cancel, window, cx);
 948                }
 949            }
 950            ThreadEvent::ShowError(error) => {
 951                self.last_error = Some(error.clone());
 952            }
 953            ThreadEvent::UsageUpdated(usage) => {
 954                self.last_usage = Some(*usage);
 955            }
 956            ThreadEvent::NewRequest | ThreadEvent::CompletionCanceled => {
 957                cx.notify();
 958            }
 959            ThreadEvent::StreamedCompletion
 960            | ThreadEvent::SummaryGenerated
 961            | ThreadEvent::SummaryChanged => {
 962                self.save_thread(cx);
 963            }
 964            ThreadEvent::Stopped(reason) => match reason {
 965                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 966                    let thread = self.thread.read(cx);
 967                    self.show_notification(
 968                        if thread.used_tools_since_last_user_message() {
 969                            "Finished running tools"
 970                        } else {
 971                            "New message"
 972                        },
 973                        IconName::ZedAssistant,
 974                        window,
 975                        cx,
 976                    );
 977                }
 978                _ => {}
 979            },
 980            ThreadEvent::ToolConfirmationNeeded => {
 981                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 982            }
 983            ThreadEvent::StreamedAssistantText(message_id, text) => {
 984                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 985                    rendered_message.append_text(text, cx);
 986                }
 987            }
 988            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
 989                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 990                    rendered_message.append_thinking(text, cx);
 991                }
 992            }
 993            ThreadEvent::MessageAdded(message_id) => {
 994                if let Some(message_segments) = self
 995                    .thread
 996                    .read(cx)
 997                    .message(*message_id)
 998                    .map(|message| message.segments.clone())
 999                {
1000                    self.push_message(message_id, &message_segments, window, cx);
1001                }
1002
1003                self.save_thread(cx);
1004                cx.notify();
1005            }
1006            ThreadEvent::MessageEdited(message_id) => {
1007                if let Some(message_segments) = self
1008                    .thread
1009                    .read(cx)
1010                    .message(*message_id)
1011                    .map(|message| message.segments.clone())
1012                {
1013                    self.edited_message(message_id, &message_segments, window, cx);
1014                }
1015
1016                self.save_thread(cx);
1017                cx.notify();
1018            }
1019            ThreadEvent::MessageDeleted(message_id) => {
1020                self.deleted_message(message_id);
1021                self.save_thread(cx);
1022                cx.notify();
1023            }
1024            ThreadEvent::UsePendingTools { tool_uses } => {
1025                for tool_use in tool_uses {
1026                    self.render_tool_use_markdown(
1027                        tool_use.id.clone(),
1028                        tool_use.ui_text.clone(),
1029                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1030                        "".into(),
1031                        cx,
1032                    );
1033                }
1034            }
1035            ThreadEvent::StreamedToolUse {
1036                tool_use_id,
1037                ui_text,
1038                input,
1039            } => {
1040                self.render_tool_use_markdown(
1041                    tool_use_id.clone(),
1042                    ui_text.clone(),
1043                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1044                    "".into(),
1045                    cx,
1046                );
1047            }
1048            ThreadEvent::ToolFinished {
1049                pending_tool_use, ..
1050            } => {
1051                if let Some(tool_use) = pending_tool_use {
1052                    self.render_tool_use_markdown(
1053                        tool_use.id.clone(),
1054                        tool_use.ui_text.clone(),
1055                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1056                        self.thread
1057                            .read(cx)
1058                            .output_for_tool(&tool_use.id)
1059                            .map(|output| output.clone().into())
1060                            .unwrap_or("".into()),
1061                        cx,
1062                    );
1063                }
1064            }
1065            ThreadEvent::CheckpointChanged => cx.notify(),
1066            ThreadEvent::ReceivedTextChunk => {}
1067            ThreadEvent::InvalidToolInput {
1068                tool_use_id,
1069                ui_text,
1070                invalid_input_json,
1071            } => {
1072                self.render_tool_use_markdown(
1073                    tool_use_id.clone(),
1074                    ui_text,
1075                    invalid_input_json,
1076                    self.thread
1077                        .read(cx)
1078                        .output_for_tool(tool_use_id)
1079                        .map(|output| output.clone().into())
1080                        .unwrap_or("".into()),
1081                    cx,
1082                );
1083            }
1084        }
1085    }
1086
1087    fn handle_rules_loading_error(
1088        &mut self,
1089        _thread_store: Entity<ThreadStore>,
1090        error: &RulesLoadingError,
1091        cx: &mut Context<Self>,
1092    ) {
1093        self.last_error = Some(ThreadError::Message {
1094            header: "Error loading rules file".into(),
1095            message: error.message.clone(),
1096        });
1097        cx.notify();
1098    }
1099
1100    fn show_notification(
1101        &mut self,
1102        caption: impl Into<SharedString>,
1103        icon: IconName,
1104        window: &mut Window,
1105        cx: &mut Context<ActiveThread>,
1106    ) {
1107        if window.is_window_active() || !self.notifications.is_empty() {
1108            return;
1109        }
1110
1111        let title = self
1112            .thread
1113            .read(cx)
1114            .summary()
1115            .unwrap_or("Agent Panel".into());
1116
1117        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1118            NotifyWhenAgentWaiting::PrimaryScreen => {
1119                if let Some(primary) = cx.primary_display() {
1120                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1121                }
1122            }
1123            NotifyWhenAgentWaiting::AllScreens => {
1124                let caption = caption.into();
1125                for screen in cx.displays() {
1126                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1127                }
1128            }
1129            NotifyWhenAgentWaiting::Never => {
1130                // Don't show anything
1131            }
1132        }
1133    }
1134
1135    fn pop_up(
1136        &mut self,
1137        icon: IconName,
1138        caption: SharedString,
1139        title: SharedString,
1140        window: &mut Window,
1141        screen: Rc<dyn PlatformDisplay>,
1142        cx: &mut Context<'_, ActiveThread>,
1143    ) {
1144        let options = AgentNotification::window_options(screen, cx);
1145
1146        let project_name = self.workspace.upgrade().and_then(|workspace| {
1147            workspace
1148                .read(cx)
1149                .project()
1150                .read(cx)
1151                .visible_worktrees(cx)
1152                .next()
1153                .map(|worktree| worktree.read(cx).root_name().to_string())
1154        });
1155
1156        if let Some(screen_window) = cx
1157            .open_window(options, |_, cx| {
1158                cx.new(|_| {
1159                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1160                })
1161            })
1162            .log_err()
1163        {
1164            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1165                self.notification_subscriptions
1166                    .entry(screen_window)
1167                    .or_insert_with(Vec::new)
1168                    .push(cx.subscribe_in(&pop_up, window, {
1169                        |this, _, event, window, cx| match event {
1170                            AgentNotificationEvent::Accepted => {
1171                                let handle = window.window_handle();
1172                                cx.activate(true);
1173
1174                                let workspace_handle = this.workspace.clone();
1175
1176                                // If there are multiple Zed windows, activate the correct one.
1177                                cx.defer(move |cx| {
1178                                    handle
1179                                        .update(cx, |_view, window, _cx| {
1180                                            window.activate_window();
1181
1182                                            if let Some(workspace) = workspace_handle.upgrade() {
1183                                                workspace.update(_cx, |workspace, cx| {
1184                                                    workspace
1185                                                        .focus_panel::<AssistantPanel>(window, cx);
1186                                                });
1187                                            }
1188                                        })
1189                                        .log_err();
1190                                });
1191
1192                                this.dismiss_notifications(cx);
1193                            }
1194                            AgentNotificationEvent::Dismissed => {
1195                                this.dismiss_notifications(cx);
1196                            }
1197                        }
1198                    }));
1199
1200                self.notifications.push(screen_window);
1201
1202                // If the user manually refocuses the original window, dismiss the popup.
1203                self.notification_subscriptions
1204                    .entry(screen_window)
1205                    .or_insert_with(Vec::new)
1206                    .push({
1207                        let pop_up_weak = pop_up.downgrade();
1208
1209                        cx.observe_window_activation(window, move |_, window, cx| {
1210                            if window.is_window_active() {
1211                                if let Some(pop_up) = pop_up_weak.upgrade() {
1212                                    pop_up.update(cx, |_, cx| {
1213                                        cx.emit(AgentNotificationEvent::Dismissed);
1214                                    });
1215                                }
1216                            }
1217                        })
1218                    });
1219            }
1220        }
1221    }
1222
1223    /// Spawns a task to save the active thread.
1224    ///
1225    /// Only one task to save the thread will be in flight at a time.
1226    fn save_thread(&mut self, cx: &mut Context<Self>) {
1227        let thread = self.thread.clone();
1228        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1229            let task = this
1230                .update(cx, |this, cx| {
1231                    this.thread_store
1232                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1233                })
1234                .ok();
1235
1236            if let Some(task) = task {
1237                task.await.log_err();
1238            }
1239        }));
1240    }
1241
1242    fn start_editing_message(
1243        &mut self,
1244        message_id: MessageId,
1245        message_segments: &[MessageSegment],
1246        message_creases: &[MessageCrease],
1247        window: &mut Window,
1248        cx: &mut Context<Self>,
1249    ) {
1250        // User message should always consist of a single text segment,
1251        // therefore we can skip returning early if it's not a text segment.
1252        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1253            return;
1254        };
1255
1256        let editor = crate::message_editor::create_editor(
1257            self.workspace.clone(),
1258            self.context_store.downgrade(),
1259            self.thread_store.downgrade(),
1260            window,
1261            cx,
1262        );
1263        editor.update(cx, |editor, cx| {
1264            editor.set_text(message_text.clone(), window, cx);
1265            insert_message_creases(editor, message_creases, &self.context_store, window, cx);
1266            editor.focus_handle(cx).focus(window);
1267            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1268        });
1269        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1270            EditorEvent::BufferEdited => {
1271                this.update_editing_message_token_count(true, cx);
1272            }
1273            _ => {}
1274        });
1275
1276        let context_picker_menu_handle = PopoverMenuHandle::default();
1277        let context_strip = cx.new(|cx| {
1278            ContextStrip::new(
1279                self.context_store.clone(),
1280                self.workspace.clone(),
1281                Some(self.thread_store.downgrade()),
1282                context_picker_menu_handle.clone(),
1283                SuggestContextKind::File,
1284                window,
1285                cx,
1286            )
1287        });
1288
1289        let context_strip_subscription =
1290            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1291
1292        self.editing_message = Some((
1293            message_id,
1294            EditingMessageState {
1295                editor: editor.clone(),
1296                context_strip,
1297                context_picker_menu_handle,
1298                last_estimated_token_count: None,
1299                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1300                _update_token_count_task: None,
1301            },
1302        ));
1303        self.update_editing_message_token_count(false, cx);
1304        cx.notify();
1305    }
1306
1307    fn handle_context_strip_event(
1308        &mut self,
1309        _context_strip: &Entity<ContextStrip>,
1310        event: &ContextStripEvent,
1311        window: &mut Window,
1312        cx: &mut Context<Self>,
1313    ) {
1314        if let Some((_, state)) = self.editing_message.as_ref() {
1315            match event {
1316                ContextStripEvent::PickerDismissed
1317                | ContextStripEvent::BlurredEmpty
1318                | ContextStripEvent::BlurredDown => {
1319                    let editor_focus_handle = state.editor.focus_handle(cx);
1320                    window.focus(&editor_focus_handle);
1321                }
1322                ContextStripEvent::BlurredUp => {}
1323            }
1324        }
1325    }
1326
1327    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1328        let Some((message_id, state)) = self.editing_message.as_mut() else {
1329            return;
1330        };
1331
1332        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1333        state._update_token_count_task.take();
1334
1335        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1336            state.last_estimated_token_count.take();
1337            return;
1338        };
1339
1340        let editor = state.editor.clone();
1341        let thread = self.thread.clone();
1342        let message_id = *message_id;
1343
1344        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1345            if debounce {
1346                cx.background_executor()
1347                    .timer(Duration::from_millis(200))
1348                    .await;
1349            }
1350
1351            let token_count = if let Some(task) = cx
1352                .update(|cx| {
1353                    let Some(message) = thread.read(cx).message(message_id) else {
1354                        log::error!("Message that was being edited no longer exists");
1355                        return None;
1356                    };
1357                    let message_text = editor.read(cx).text(cx);
1358
1359                    if message_text.is_empty() && message.loaded_context.is_empty() {
1360                        return None;
1361                    }
1362
1363                    let mut request_message = LanguageModelRequestMessage {
1364                        role: language_model::Role::User,
1365                        content: Vec::new(),
1366                        cache: false,
1367                    };
1368
1369                    message
1370                        .loaded_context
1371                        .add_to_request_message(&mut request_message);
1372
1373                    if !message_text.is_empty() {
1374                        request_message
1375                            .content
1376                            .push(MessageContent::Text(message_text));
1377                    }
1378
1379                    let request = language_model::LanguageModelRequest {
1380                        thread_id: None,
1381                        prompt_id: None,
1382                        mode: None,
1383                        messages: vec![request_message],
1384                        tools: vec![],
1385                        stop: vec![],
1386                        temperature: None,
1387                    };
1388
1389                    Some(configured_model.model.count_tokens(request, cx))
1390                })
1391                .ok()
1392                .flatten()
1393            {
1394                task.await.log_err()
1395            } else {
1396                Some(0)
1397            };
1398
1399            if let Some(token_count) = token_count {
1400                this.update(cx, |this, cx| {
1401                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1402                        return;
1403                    };
1404
1405                    state.last_estimated_token_count = Some(token_count);
1406                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1407                })
1408                .ok();
1409            };
1410        }));
1411    }
1412
1413    fn toggle_context_picker(
1414        &mut self,
1415        _: &crate::ToggleContextPicker,
1416        window: &mut Window,
1417        cx: &mut Context<Self>,
1418    ) {
1419        if let Some((_, state)) = self.editing_message.as_mut() {
1420            let handle = state.context_picker_menu_handle.clone();
1421            window.defer(cx, move |window, cx| {
1422                handle.toggle(window, cx);
1423            });
1424        }
1425    }
1426
1427    fn remove_all_context(
1428        &mut self,
1429        _: &crate::RemoveAllContext,
1430        _window: &mut Window,
1431        cx: &mut Context<Self>,
1432    ) {
1433        self.context_store.update(cx, |store, _cx| store.clear());
1434        cx.notify();
1435    }
1436
1437    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1438        if let Some((_, state)) = self.editing_message.as_mut() {
1439            if state.context_picker_menu_handle.is_deployed() {
1440                cx.propagate();
1441            } else {
1442                state.context_strip.focus_handle(cx).focus(window);
1443            }
1444        }
1445    }
1446
1447    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1448        let images = cx
1449            .read_from_clipboard()
1450            .map(|item| {
1451                item.into_entries()
1452                    .filter_map(|entry| {
1453                        if let ClipboardEntry::Image(image) = entry {
1454                            Some(image)
1455                        } else {
1456                            None
1457                        }
1458                    })
1459                    .collect::<Vec<_>>()
1460            })
1461            .unwrap_or_default();
1462
1463        if images.is_empty() {
1464            return;
1465        }
1466        cx.stop_propagation();
1467
1468        self.context_store.update(cx, |store, cx| {
1469            for image in images {
1470                store.add_image_instance(Arc::new(image), cx);
1471            }
1472        });
1473    }
1474
1475    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1476        self.editing_message.take();
1477        cx.notify();
1478    }
1479
1480    fn confirm_editing_message(
1481        &mut self,
1482        _: &menu::Confirm,
1483        window: &mut Window,
1484        cx: &mut Context<Self>,
1485    ) {
1486        let Some((message_id, state)) = self.editing_message.take() else {
1487            return;
1488        };
1489
1490        let Some(model) = self
1491            .thread
1492            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1493        else {
1494            return;
1495        };
1496
1497        if model.provider.must_accept_terms(cx) {
1498            cx.notify();
1499            return;
1500        }
1501
1502        let edited_text = state.editor.read(cx).text(cx);
1503
1504        let new_context = self
1505            .context_store
1506            .read(cx)
1507            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1508
1509        let project = self.thread.read(cx).project().clone();
1510        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1511
1512        let load_context_task =
1513            crate::context::load_context(new_context, &project, &prompt_store, cx);
1514        self._load_edited_message_context_task =
1515            Some(cx.spawn_in(window, async move |this, cx| {
1516                let context = load_context_task.await;
1517                let _ = this
1518                    .update_in(cx, |this, window, cx| {
1519                        this.thread.update(cx, |thread, cx| {
1520                            thread.edit_message(
1521                                message_id,
1522                                Role::User,
1523                                vec![MessageSegment::Text(edited_text)],
1524                                Some(context.loaded_context),
1525                                cx,
1526                            );
1527                            for message_id in this.messages_after(message_id) {
1528                                thread.delete_message(*message_id, cx);
1529                            }
1530                        });
1531
1532                        this.thread.update(cx, |thread, cx| {
1533                            thread.advance_prompt_id();
1534                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1535                        });
1536                        this._load_edited_message_context_task = None;
1537                        cx.notify();
1538                    })
1539                    .log_err();
1540            }));
1541    }
1542
1543    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1544        self.messages
1545            .iter()
1546            .position(|id| *id == message_id)
1547            .map(|index| &self.messages[index + 1..])
1548            .unwrap_or(&[])
1549    }
1550
1551    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1552        self.cancel_editing_message(&menu::Cancel, window, cx);
1553    }
1554
1555    fn handle_regenerate_click(
1556        &mut self,
1557        _: &ClickEvent,
1558        window: &mut Window,
1559        cx: &mut Context<Self>,
1560    ) {
1561        self.confirm_editing_message(&menu::Confirm, window, cx);
1562    }
1563
1564    fn handle_feedback_click(
1565        &mut self,
1566        message_id: MessageId,
1567        feedback: ThreadFeedback,
1568        window: &mut Window,
1569        cx: &mut Context<Self>,
1570    ) {
1571        let report = self.thread.update(cx, |thread, cx| {
1572            thread.report_message_feedback(message_id, feedback, cx)
1573        });
1574
1575        cx.spawn(async move |this, cx| {
1576            report.await?;
1577            this.update(cx, |_this, cx| cx.notify())
1578        })
1579        .detach_and_log_err(cx);
1580
1581        match feedback {
1582            ThreadFeedback::Positive => {
1583                self.open_feedback_editors.remove(&message_id);
1584            }
1585            ThreadFeedback::Negative => {
1586                self.handle_show_feedback_comments(message_id, window, cx);
1587            }
1588        }
1589    }
1590
1591    fn handle_show_feedback_comments(
1592        &mut self,
1593        message_id: MessageId,
1594        window: &mut Window,
1595        cx: &mut Context<Self>,
1596    ) {
1597        let buffer = cx.new(|cx| {
1598            let empty_string = String::new();
1599            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1600        });
1601
1602        let editor = cx.new(|cx| {
1603            let mut editor = Editor::new(
1604                editor::EditorMode::AutoHeight { max_lines: 4 },
1605                buffer,
1606                None,
1607                window,
1608                cx,
1609            );
1610            editor.set_placeholder_text(
1611                "What went wrong? Share your feedback so we can improve.",
1612                cx,
1613            );
1614            editor
1615        });
1616
1617        editor.read(cx).focus_handle(cx).focus(window);
1618        self.open_feedback_editors.insert(message_id, editor);
1619        cx.notify();
1620    }
1621
1622    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1623        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1624            return;
1625        };
1626
1627        let report_task = self.thread.update(cx, |thread, cx| {
1628            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1629        });
1630
1631        let comments = editor.read(cx).text(cx);
1632        if !comments.is_empty() {
1633            let thread_id = self.thread.read(cx).id().clone();
1634            let comments_value = String::from(comments.as_str());
1635
1636            let message_content = self
1637                .thread
1638                .read(cx)
1639                .message(message_id)
1640                .map(|msg| msg.to_string())
1641                .unwrap_or_default();
1642
1643            telemetry::event!(
1644                "Assistant Thread Feedback Comments",
1645                thread_id,
1646                message_id = message_id.0,
1647                message_content,
1648                comments = comments_value
1649            );
1650
1651            self.open_feedback_editors.remove(&message_id);
1652
1653            cx.spawn(async move |this, cx| {
1654                report_task.await?;
1655                this.update(cx, |_this, cx| cx.notify())
1656            })
1657            .detach_and_log_err(cx);
1658        }
1659    }
1660
1661    fn render_edit_message_editor(
1662        &self,
1663        state: &EditingMessageState,
1664        window: &mut Window,
1665        cx: &Context<Self>,
1666    ) -> impl IntoElement {
1667        let settings = ThemeSettings::get_global(cx);
1668        let font_size = TextSize::Small.rems(cx);
1669        let line_height = font_size.to_pixels(window.rem_size()) * 1.75;
1670
1671        let colors = cx.theme().colors();
1672
1673        let text_style = TextStyle {
1674            color: colors.text,
1675            font_family: settings.buffer_font.family.clone(),
1676            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1677            font_features: settings.buffer_font.features.clone(),
1678            font_size: font_size.into(),
1679            line_height: line_height.into(),
1680            ..Default::default()
1681        };
1682
1683        v_flex()
1684            .key_context("EditMessageEditor")
1685            .on_action(cx.listener(Self::toggle_context_picker))
1686            .on_action(cx.listener(Self::remove_all_context))
1687            .on_action(cx.listener(Self::move_up))
1688            .on_action(cx.listener(Self::cancel_editing_message))
1689            .on_action(cx.listener(Self::confirm_editing_message))
1690            .capture_action(cx.listener(Self::paste))
1691            .min_h_6()
1692            .flex_grow()
1693            .w_full()
1694            .gap_2()
1695            .child(EditorElement::new(
1696                &state.editor,
1697                EditorStyle {
1698                    background: colors.editor_background,
1699                    local_player: cx.theme().players().local(),
1700                    text: text_style,
1701                    syntax: cx.theme().syntax().clone(),
1702                    ..Default::default()
1703                },
1704            ))
1705            .child(state.context_strip.clone())
1706    }
1707
1708    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1709        let message_id = self.messages[ix];
1710        let Some(message) = self.thread.read(cx).message(message_id) else {
1711            return Empty.into_any();
1712        };
1713        let message_creases = message.creases.clone();
1714
1715        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1716            return Empty.into_any();
1717        };
1718
1719        let workspace = self.workspace.clone();
1720        let thread = self.thread.read(cx);
1721
1722        // Get all the data we need from thread before we start using it in closures
1723        let checkpoint = thread.checkpoint_for_message(message_id);
1724        let added_context = thread
1725            .context_for_message(message_id)
1726            .map(|context| AddedContext::new_attached(context, cx))
1727            .collect::<Vec<_>>();
1728
1729        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1730        let has_tool_uses = !tool_uses.is_empty();
1731        let is_generating = thread.is_generating();
1732
1733        let is_first_message = ix == 0;
1734        let is_last_message = ix == self.messages.len() - 1;
1735
1736        let show_feedback = thread.is_turn_end(ix);
1737
1738        let generating_label = (is_generating && is_last_message)
1739            .then(|| AnimatedLabel::new("Generating").size(LabelSize::Small));
1740
1741        let editing_message_state = self
1742            .editing_message
1743            .as_ref()
1744            .filter(|(id, _)| *id == message_id)
1745            .map(|(_, state)| state);
1746
1747        let colors = cx.theme().colors();
1748        let editor_bg_color = colors.editor_background;
1749
1750        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileCode)
1751            .shape(ui::IconButtonShape::Square)
1752            .icon_size(IconSize::XSmall)
1753            .icon_color(Color::Ignored)
1754            .tooltip(Tooltip::text("Open Thread as Markdown"))
1755            .on_click(|_, window, cx| {
1756                window.dispatch_action(Box::new(OpenActiveThreadAsMarkdown), cx)
1757            });
1758
1759        // For all items that should be aligned with the LLM's response.
1760        const RESPONSE_PADDING_X: Pixels = px(19.);
1761
1762        let feedback_container = h_flex()
1763            .group("feedback_container")
1764            .mt_1()
1765            .py_2()
1766            .px(RESPONSE_PADDING_X)
1767            .gap_1()
1768            .flex_wrap()
1769            .justify_end();
1770        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1771            Some(feedback) => feedback_container
1772                .child(
1773                    div().mr_1().visible_on_hover("feedback_container").child(
1774                        Label::new(match feedback {
1775                            ThreadFeedback::Positive => "Thanks for your feedback!",
1776                            ThreadFeedback::Negative => {
1777                                "We appreciate your feedback and will use it to improve."
1778                            }
1779                        })
1780                    .color(Color::Muted)
1781                    .size(LabelSize::XSmall)
1782                    .truncate())
1783                )
1784                .child(
1785                    h_flex()
1786                        .pr_1()
1787                        .gap_1()
1788                        .child(
1789                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1790                                .shape(ui::IconButtonShape::Square)
1791                                .icon_size(IconSize::XSmall)
1792                                .icon_color(match feedback {
1793                                    ThreadFeedback::Positive => Color::Accent,
1794                                    ThreadFeedback::Negative => Color::Ignored,
1795                                })
1796                                .tooltip(Tooltip::text("Helpful Response"))
1797                                .on_click(cx.listener(move |this, _, window, cx| {
1798                                    this.handle_feedback_click(
1799                                        message_id,
1800                                        ThreadFeedback::Positive,
1801                                        window,
1802                                        cx,
1803                                    );
1804                                })),
1805                        )
1806                        .child(
1807                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1808                                .shape(ui::IconButtonShape::Square)
1809                                .icon_size(IconSize::XSmall)
1810                                .icon_color(match feedback {
1811                                    ThreadFeedback::Positive => Color::Ignored,
1812                                    ThreadFeedback::Negative => Color::Accent,
1813                                })
1814                                .tooltip(Tooltip::text("Not Helpful"))
1815                                .on_click(cx.listener(move |this, _, window, cx| {
1816                                    this.handle_feedback_click(
1817                                        message_id,
1818                                        ThreadFeedback::Negative,
1819                                        window,
1820                                        cx,
1821                                    );
1822                                })),
1823                        )
1824                        .child(open_as_markdown),
1825                )
1826                .into_any_element(),
1827            None => feedback_container
1828                .child(
1829                    div().mr_1().visible_on_hover("feedback_container").child(
1830                        Label::new(
1831                            "Rating the thread sends all of your current conversation to the Zed team.",
1832                        )
1833                        .color(Color::Muted)
1834                    .size(LabelSize::XSmall)
1835                    .truncate())
1836                )
1837                .child(
1838                    h_flex()
1839                        .pr_1()
1840                        .gap_1()
1841                        .child(
1842                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1843                                .icon_size(IconSize::XSmall)
1844                                .icon_color(Color::Ignored)
1845                                .shape(ui::IconButtonShape::Square)
1846                                .tooltip(Tooltip::text("Helpful Response"))
1847                                .on_click(cx.listener(move |this, _, window, cx| {
1848                                    this.handle_feedback_click(
1849                                        message_id,
1850                                        ThreadFeedback::Positive,
1851                                        window,
1852                                        cx,
1853                                    );
1854                                })),
1855                        )
1856                        .child(
1857                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1858                                .icon_size(IconSize::XSmall)
1859                                .icon_color(Color::Ignored)
1860                                .shape(ui::IconButtonShape::Square)
1861                                .tooltip(Tooltip::text("Not Helpful"))
1862                                .on_click(cx.listener(move |this, _, window, cx| {
1863                                    this.handle_feedback_click(
1864                                        message_id,
1865                                        ThreadFeedback::Negative,
1866                                        window,
1867                                        cx,
1868                                    );
1869                                })),
1870                        )
1871                        .child(open_as_markdown),
1872                )
1873                .into_any_element(),
1874        };
1875
1876        let message_is_empty = message.should_display_content();
1877        let has_content = !message_is_empty || !added_context.is_empty();
1878
1879        let message_content = has_content.then(|| {
1880            if let Some(state) = editing_message_state.as_ref() {
1881                self.render_edit_message_editor(state, window, cx)
1882                    .into_any_element()
1883            } else {
1884                v_flex()
1885                    .w_full()
1886                    .gap_1()
1887                    .when(!message_is_empty, |parent| {
1888                        parent.child(div().min_h_6().child(self.render_message_content(
1889                            message_id,
1890                            rendered_message,
1891                            has_tool_uses,
1892                            workspace.clone(),
1893                            window,
1894                            cx,
1895                        )))
1896                    })
1897                    .when(!added_context.is_empty(), |parent| {
1898                        parent.child(h_flex().flex_wrap().gap_1().children(
1899                            added_context.into_iter().map(|added_context| {
1900                                let context = added_context.handle.clone();
1901                                ContextPill::added(added_context, false, false, None).on_click(
1902                                    Rc::new(cx.listener({
1903                                        let workspace = workspace.clone();
1904                                        move |_, _, window, cx| {
1905                                            if let Some(workspace) = workspace.upgrade() {
1906                                                open_context(&context, workspace, window, cx);
1907                                                cx.notify();
1908                                            }
1909                                            cx.stop_propagation();
1910                                        }
1911                                    })),
1912                                )
1913                            }),
1914                        ))
1915                    })
1916                    .into_any_element()
1917            }
1918        });
1919
1920        let styled_message = match message.role {
1921            Role::User => v_flex()
1922                .id(("message-container", ix))
1923                .pt_2()
1924                .pl_2()
1925                .pr_2p5()
1926                .pb_4()
1927                .child(
1928                    v_flex()
1929                        .id(("user-message", ix))
1930                        .bg(editor_bg_color)
1931                        .rounded_lg()
1932                        .shadow_md()
1933                        .border_1()
1934                        .border_color(colors.border)
1935                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1936                        .cursor_pointer()
1937                        .child(
1938                            h_flex()
1939                                .p_2p5()
1940                                .gap_1()
1941                                .children(message_content)
1942                                .when_some(editing_message_state, |this, state| {
1943                                    let focus_handle = state.editor.focus_handle(cx).clone();
1944                                    this.w_full().justify_between().child(
1945                                        h_flex()
1946                                            .gap_0p5()
1947                                            .child(
1948                                                IconButton::new(
1949                                                    "cancel-edit-message",
1950                                                    IconName::Close,
1951                                                )
1952                                                .shape(ui::IconButtonShape::Square)
1953                                                .icon_color(Color::Error)
1954                                                .tooltip({
1955                                                    let focus_handle = focus_handle.clone();
1956                                                    move |window, cx| {
1957                                                        Tooltip::for_action_in(
1958                                                            "Cancel Edit",
1959                                                            &menu::Cancel,
1960                                                            &focus_handle,
1961                                                            window,
1962                                                            cx,
1963                                                        )
1964                                                    }
1965                                                })
1966                                                .on_click(cx.listener(Self::handle_cancel_click)),
1967                                            )
1968                                            .child(
1969                                                IconButton::new(
1970                                                    "confirm-edit-message",
1971                                                    IconName::Check,
1972                                                )
1973                                                .disabled(state.editor.read(cx).is_empty(cx))
1974                                                .shape(ui::IconButtonShape::Square)
1975                                                .icon_color(Color::Success)
1976                                                .tooltip({
1977                                                    let focus_handle = focus_handle.clone();
1978                                                    move |window, cx| {
1979                                                        Tooltip::for_action_in(
1980                                                            "Regenerate",
1981                                                            &menu::Confirm,
1982                                                            &focus_handle,
1983                                                            window,
1984                                                            cx,
1985                                                        )
1986                                                    }
1987                                                })
1988                                                .on_click(
1989                                                    cx.listener(Self::handle_regenerate_click),
1990                                                ),
1991                                            ),
1992                                    )
1993                                }),
1994                        )
1995                        .on_click(cx.listener({
1996                            let message_segments = message.segments.clone();
1997                            move |this, _, window, cx| {
1998                                this.start_editing_message(
1999                                    message_id,
2000                                    &message_segments,
2001                                    &message_creases,
2002                                    window,
2003                                    cx,
2004                                );
2005                            }
2006                        })),
2007                ),
2008            Role::Assistant => v_flex()
2009                .id(("message-container", ix))
2010                .px(RESPONSE_PADDING_X)
2011                .gap_2()
2012                .children(message_content)
2013                .when(has_tool_uses, |parent| {
2014                    parent.children(tool_uses.into_iter().map(|tool_use| {
2015                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2016                    }))
2017                }),
2018            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2019                v_flex()
2020                    .bg(colors.editor_background)
2021                    .rounded_sm()
2022                    .child(div().p_4().children(message_content)),
2023            ),
2024        };
2025
2026        let after_editing_message = self
2027            .editing_message
2028            .as_ref()
2029            .map_or(false, |(editing_message_id, _)| {
2030                message_id > *editing_message_id
2031            });
2032
2033        let panel_background = cx.theme().colors().panel_background;
2034
2035        v_flex()
2036            .w_full()
2037            .when_some(checkpoint, |parent, checkpoint| {
2038                let mut is_pending = false;
2039                let mut error = None;
2040                if let Some(last_restore_checkpoint) =
2041                    self.thread.read(cx).last_restore_checkpoint()
2042                {
2043                    if last_restore_checkpoint.message_id() == message_id {
2044                        match last_restore_checkpoint {
2045                            LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2046                            LastRestoreCheckpoint::Error { error: err, .. } => {
2047                                error = Some(err.clone());
2048                            }
2049                        }
2050                    }
2051                }
2052
2053                let restore_checkpoint_button =
2054                    Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2055                        .icon(if error.is_some() {
2056                            IconName::XCircle
2057                        } else {
2058                            IconName::Undo
2059                        })
2060                        .icon_size(IconSize::XSmall)
2061                        .icon_position(IconPosition::Start)
2062                        .icon_color(if error.is_some() {
2063                            Some(Color::Error)
2064                        } else {
2065                            None
2066                        })
2067                        .label_size(LabelSize::XSmall)
2068                        .disabled(is_pending)
2069                        .on_click(cx.listener(move |this, _, _window, cx| {
2070                            this.thread.update(cx, |thread, cx| {
2071                                thread
2072                                    .restore_checkpoint(checkpoint.clone(), cx)
2073                                    .detach_and_log_err(cx);
2074                            });
2075                        }));
2076
2077                let restore_checkpoint_button = if is_pending {
2078                    restore_checkpoint_button
2079                        .with_animation(
2080                            ("pulsating-restore-checkpoint-button", ix),
2081                            Animation::new(Duration::from_secs(2))
2082                                .repeat()
2083                                .with_easing(pulsating_between(0.6, 1.)),
2084                            |label, delta| label.alpha(delta),
2085                        )
2086                        .into_any_element()
2087                } else if let Some(error) = error {
2088                    restore_checkpoint_button
2089                        .tooltip(Tooltip::text(error.to_string()))
2090                        .into_any_element()
2091                } else {
2092                    restore_checkpoint_button.into_any_element()
2093                };
2094
2095                parent.child(
2096                    h_flex()
2097                        .pt_2p5()
2098                        .px_2p5()
2099                        .w_full()
2100                        .gap_1()
2101                        .child(ui::Divider::horizontal())
2102                        .child(restore_checkpoint_button)
2103                        .child(ui::Divider::horizontal()),
2104                )
2105            })
2106            .when(is_first_message, |parent| {
2107                parent.child(self.render_rules_item(cx))
2108            })
2109            .child(styled_message)
2110            .when(generating_label.is_some(), |this| {
2111                this.child(
2112                    h_flex()
2113                        .h_8()
2114                        .mt_2()
2115                        .mb_4()
2116                        .ml_4()
2117                        .py_1p5()
2118                        .child(generating_label.unwrap()),
2119                )
2120            })
2121            .when(show_feedback, move |parent| {
2122                parent.child(feedback_items).when_some(
2123                    self.open_feedback_editors.get(&message_id),
2124                    move |parent, feedback_editor| {
2125                        let focus_handle = feedback_editor.focus_handle(cx);
2126                        parent.child(
2127                            v_flex()
2128                                .key_context("AgentFeedbackMessageEditor")
2129                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2130                                    this.open_feedback_editors.remove(&message_id);
2131                                    cx.notify();
2132                                }))
2133                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2134                                    this.submit_feedback_message(message_id, cx);
2135                                    cx.notify();
2136                                }))
2137                                .on_action(cx.listener(Self::confirm_editing_message))
2138                                .mb_2()
2139                                .mx_4()
2140                                .p_2()
2141                                .rounded_md()
2142                                .border_1()
2143                                .border_color(cx.theme().colors().border)
2144                                .bg(cx.theme().colors().editor_background)
2145                                .child(feedback_editor.clone())
2146                                .child(
2147                                    h_flex()
2148                                        .gap_1()
2149                                        .justify_end()
2150                                        .child(
2151                                            Button::new("dismiss-feedback-message", "Cancel")
2152                                                .label_size(LabelSize::Small)
2153                                                .key_binding(
2154                                                    KeyBinding::for_action_in(
2155                                                        &menu::Cancel,
2156                                                        &focus_handle,
2157                                                        window,
2158                                                        cx,
2159                                                    )
2160                                                    .map(|kb| kb.size(rems_from_px(10.))),
2161                                                )
2162                                                .on_click(cx.listener(
2163                                                    move |this, _, _window, cx| {
2164                                                        this.open_feedback_editors
2165                                                            .remove(&message_id);
2166                                                        cx.notify();
2167                                                    },
2168                                                )),
2169                                        )
2170                                        .child(
2171                                            Button::new(
2172                                                "submit-feedback-message",
2173                                                "Share Feedback",
2174                                            )
2175                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2176                                            .label_size(LabelSize::Small)
2177                                            .key_binding(
2178                                                KeyBinding::for_action_in(
2179                                                    &menu::Confirm,
2180                                                    &focus_handle,
2181                                                    window,
2182                                                    cx,
2183                                                )
2184                                                .map(|kb| kb.size(rems_from_px(10.))),
2185                                            )
2186                                            .on_click(
2187                                                cx.listener(move |this, _, _window, cx| {
2188                                                    this.submit_feedback_message(message_id, cx);
2189                                                    cx.notify()
2190                                                }),
2191                                            ),
2192                                        ),
2193                                ),
2194                        )
2195                    },
2196                )
2197            })
2198            .when(after_editing_message, |parent| {
2199                // Backdrop to dim out the whole thread below the editing user message
2200                parent.relative().child(
2201                    div()
2202                        .occlude()
2203                        .absolute()
2204                        .inset_0()
2205                        .size_full()
2206                        .bg(panel_background)
2207                        .opacity(0.8),
2208                )
2209            })
2210            .into_any()
2211    }
2212
2213    fn render_message_content(
2214        &self,
2215        message_id: MessageId,
2216        rendered_message: &RenderedMessage,
2217        has_tool_uses: bool,
2218        workspace: WeakEntity<Workspace>,
2219        window: &Window,
2220        cx: &Context<Self>,
2221    ) -> impl IntoElement {
2222        let is_last_message = self.messages.last() == Some(&message_id);
2223        let is_generating = self.thread.read(cx).is_generating();
2224        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2225            rendered_message
2226                .segments
2227                .iter()
2228                .enumerate()
2229                .next_back()
2230                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2231                .map(|(index, _)| index)
2232        } else {
2233            None
2234        };
2235
2236        let message_role = self
2237            .thread
2238            .read(cx)
2239            .message(message_id)
2240            .map(|m| m.role)
2241            .unwrap_or(Role::User);
2242
2243        let is_assistant_message = message_role == Role::Assistant;
2244        let is_user_message = message_role == Role::User;
2245
2246        v_flex()
2247            .text_ui(cx)
2248            .gap_2()
2249            .when(is_user_message, |this| this.text_xs())
2250            .children(
2251                rendered_message.segments.iter().enumerate().map(
2252                    |(index, segment)| match segment {
2253                        RenderedMessageSegment::Thinking {
2254                            content,
2255                            scroll_handle,
2256                        } => self
2257                            .render_message_thinking_segment(
2258                                message_id,
2259                                index,
2260                                content.clone(),
2261                                &scroll_handle,
2262                                Some(index) == pending_thinking_segment_index,
2263                                window,
2264                                cx,
2265                            )
2266                            .into_any_element(),
2267                        RenderedMessageSegment::Text(markdown) => {
2268                            let markdown_element = MarkdownElement::new(
2269                                markdown.clone(),
2270                                if is_user_message {
2271                                    let mut style = default_markdown_style(window, cx);
2272                                    let mut text_style = window.text_style();
2273                                    let theme_settings = ThemeSettings::get_global(cx);
2274
2275                                    let buffer_font = theme_settings.buffer_font.family.clone();
2276                                    let buffer_font_size = TextSize::Small.rems(cx);
2277
2278                                    text_style.refine(&TextStyleRefinement {
2279                                        font_family: Some(buffer_font),
2280                                        font_size: Some(buffer_font_size.into()),
2281                                        ..Default::default()
2282                                    });
2283
2284                                    style.base_text_style = text_style;
2285                                    style
2286                                } else {
2287                                    default_markdown_style(window, cx)
2288                                },
2289                            );
2290
2291                            let markdown_element = if is_assistant_message {
2292                                markdown_element.code_block_renderer(
2293                                    markdown::CodeBlockRenderer::Custom {
2294                                        render: Arc::new({
2295                                            let workspace = workspace.clone();
2296                                            let active_thread = cx.entity();
2297                                            move |kind,
2298                                                  parsed_markdown,
2299                                                  range,
2300                                                  metadata,
2301                                                  window,
2302                                                  cx| {
2303                                                render_markdown_code_block(
2304                                                    message_id,
2305                                                    range.start,
2306                                                    kind,
2307                                                    parsed_markdown,
2308                                                    metadata,
2309                                                    active_thread.clone(),
2310                                                    workspace.clone(),
2311                                                    window,
2312                                                    cx,
2313                                                )
2314                                            }
2315                                        }),
2316                                        transform: Some(Arc::new({
2317                                            let active_thread = cx.entity();
2318                                            let editor_bg = cx.theme().colors().editor_background;
2319
2320                                            move |el, range, metadata, _, cx| {
2321                                                let is_expanded = active_thread
2322                                                    .read(cx)
2323                                                    .expanded_code_blocks
2324                                                    .get(&(message_id, range.start))
2325                                                    .copied()
2326                                                    .unwrap_or(true);
2327
2328                                                if is_expanded
2329                                                    || metadata.line_count
2330                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2331                                                {
2332                                                    return el;
2333                                                }
2334                                                el.child(
2335                                                    div()
2336                                                        .absolute()
2337                                                        .bottom_0()
2338                                                        .left_0()
2339                                                        .w_full()
2340                                                        .h_1_4()
2341                                                        .rounded_b_lg()
2342                                                        .bg(linear_gradient(
2343                                                            0.,
2344                                                            linear_color_stop(editor_bg, 0.),
2345                                                            linear_color_stop(
2346                                                                editor_bg.opacity(0.),
2347                                                                1.,
2348                                                            ),
2349                                                        )),
2350                                                )
2351                                            }
2352                                        })),
2353                                    },
2354                                )
2355                            } else {
2356                                markdown_element.code_block_renderer(
2357                                    markdown::CodeBlockRenderer::Default {
2358                                        copy_button: false,
2359                                        border: true,
2360                                    },
2361                                )
2362                            };
2363
2364                            div()
2365                                .child(markdown_element.on_url_click({
2366                                    let workspace = self.workspace.clone();
2367                                    move |text, window, cx| {
2368                                        open_markdown_link(text, workspace.clone(), window, cx);
2369                                        cx.stop_propagation();
2370                                    }
2371                                }))
2372                                .into_any_element()
2373                        }
2374                    },
2375                ),
2376            )
2377    }
2378
2379    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2380        cx.theme().colors().border.opacity(0.5)
2381    }
2382
2383    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2384        cx.theme()
2385            .colors()
2386            .element_background
2387            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2388    }
2389
2390    fn render_message_thinking_segment(
2391        &self,
2392        message_id: MessageId,
2393        ix: usize,
2394        markdown: Entity<Markdown>,
2395        scroll_handle: &ScrollHandle,
2396        pending: bool,
2397        window: &Window,
2398        cx: &Context<Self>,
2399    ) -> impl IntoElement {
2400        let is_open = self
2401            .expanded_thinking_segments
2402            .get(&(message_id, ix))
2403            .copied()
2404            .unwrap_or_default();
2405
2406        let editor_bg = cx.theme().colors().panel_background;
2407
2408        div().map(|this| {
2409            if pending {
2410                this.v_flex()
2411                    .mt_neg_2()
2412                    .mb_1p5()
2413                    .child(
2414                        h_flex()
2415                            .group("disclosure-header")
2416                            .justify_between()
2417                            .child(
2418                                h_flex()
2419                                    .gap_1p5()
2420                                    .child(
2421                                        Icon::new(IconName::LightBulb)
2422                                            .size(IconSize::XSmall)
2423                                            .color(Color::Muted),
2424                                    )
2425                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2426                            )
2427                            .child(
2428                                h_flex()
2429                                    .gap_1()
2430                                    .child(
2431                                        div().visible_on_hover("disclosure-header").child(
2432                                            Disclosure::new("thinking-disclosure", is_open)
2433                                                .opened_icon(IconName::ChevronUp)
2434                                                .closed_icon(IconName::ChevronDown)
2435                                                .on_click(cx.listener({
2436                                                    move |this, _event, _window, _cx| {
2437                                                        let is_open = this
2438                                                            .expanded_thinking_segments
2439                                                            .entry((message_id, ix))
2440                                                            .or_insert(false);
2441
2442                                                        *is_open = !*is_open;
2443                                                    }
2444                                                })),
2445                                        ),
2446                                    )
2447                                    .child({
2448                                        Icon::new(IconName::ArrowCircle)
2449                                            .color(Color::Accent)
2450                                            .size(IconSize::Small)
2451                                            .with_animation(
2452                                                "arrow-circle",
2453                                                Animation::new(Duration::from_secs(2)).repeat(),
2454                                                |icon, delta| {
2455                                                    icon.transform(Transformation::rotate(
2456                                                        percentage(delta),
2457                                                    ))
2458                                                },
2459                                            )
2460                                    }),
2461                            ),
2462                    )
2463                    .when(!is_open, |this| {
2464                        let gradient_overlay = div()
2465                            .rounded_b_lg()
2466                            .h_full()
2467                            .absolute()
2468                            .w_full()
2469                            .bottom_0()
2470                            .left_0()
2471                            .bg(linear_gradient(
2472                                180.,
2473                                linear_color_stop(editor_bg, 1.),
2474                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2475                            ));
2476
2477                        this.child(
2478                            div()
2479                                .relative()
2480                                .bg(editor_bg)
2481                                .rounded_b_lg()
2482                                .mt_2()
2483                                .pl_4()
2484                                .child(
2485                                    div()
2486                                        .id(("thinking-content", ix))
2487                                        .max_h_20()
2488                                        .track_scroll(scroll_handle)
2489                                        .text_ui_sm(cx)
2490                                        .overflow_hidden()
2491                                        .child(
2492                                            MarkdownElement::new(
2493                                                markdown.clone(),
2494                                                default_markdown_style(window, cx),
2495                                            )
2496                                            .on_url_click({
2497                                                let workspace = self.workspace.clone();
2498                                                move |text, window, cx| {
2499                                                    open_markdown_link(
2500                                                        text,
2501                                                        workspace.clone(),
2502                                                        window,
2503                                                        cx,
2504                                                    );
2505                                                }
2506                                            }),
2507                                        ),
2508                                )
2509                                .child(gradient_overlay),
2510                        )
2511                    })
2512                    .when(is_open, |this| {
2513                        this.child(
2514                            div()
2515                                .id(("thinking-content", ix))
2516                                .h_full()
2517                                .bg(editor_bg)
2518                                .text_ui_sm(cx)
2519                                .child(
2520                                    MarkdownElement::new(
2521                                        markdown.clone(),
2522                                        default_markdown_style(window, cx),
2523                                    )
2524                                    .on_url_click({
2525                                        let workspace = self.workspace.clone();
2526                                        move |text, window, cx| {
2527                                            open_markdown_link(text, workspace.clone(), window, cx);
2528                                        }
2529                                    }),
2530                                ),
2531                        )
2532                    })
2533            } else {
2534                this.v_flex()
2535                    .mt_neg_2()
2536                    .child(
2537                        h_flex()
2538                            .group("disclosure-header")
2539                            .pr_1()
2540                            .justify_between()
2541                            .opacity(0.8)
2542                            .hover(|style| style.opacity(1.))
2543                            .child(
2544                                h_flex()
2545                                    .gap_1p5()
2546                                    .child(
2547                                        Icon::new(IconName::LightBulb)
2548                                            .size(IconSize::XSmall)
2549                                            .color(Color::Muted),
2550                                    )
2551                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2552                            )
2553                            .child(
2554                                div().visible_on_hover("disclosure-header").child(
2555                                    Disclosure::new("thinking-disclosure", is_open)
2556                                        .opened_icon(IconName::ChevronUp)
2557                                        .closed_icon(IconName::ChevronDown)
2558                                        .on_click(cx.listener({
2559                                            move |this, _event, _window, _cx| {
2560                                                let is_open = this
2561                                                    .expanded_thinking_segments
2562                                                    .entry((message_id, ix))
2563                                                    .or_insert(false);
2564
2565                                                *is_open = !*is_open;
2566                                            }
2567                                        })),
2568                                ),
2569                            ),
2570                    )
2571                    .child(
2572                        div()
2573                            .id(("thinking-content", ix))
2574                            .relative()
2575                            .mt_1p5()
2576                            .ml_1p5()
2577                            .pl_2p5()
2578                            .border_l_1()
2579                            .border_color(cx.theme().colors().border_variant)
2580                            .text_ui_sm(cx)
2581                            .when(is_open, |this| {
2582                                this.child(
2583                                    MarkdownElement::new(
2584                                        markdown.clone(),
2585                                        default_markdown_style(window, cx),
2586                                    )
2587                                    .on_url_click({
2588                                        let workspace = self.workspace.clone();
2589                                        move |text, window, cx| {
2590                                            open_markdown_link(text, workspace.clone(), window, cx);
2591                                        }
2592                                    }),
2593                                )
2594                            }),
2595                    )
2596            }
2597        })
2598    }
2599
2600    fn render_tool_use(
2601        &self,
2602        tool_use: ToolUse,
2603        window: &mut Window,
2604        workspace: WeakEntity<Workspace>,
2605        cx: &mut Context<Self>,
2606    ) -> impl IntoElement + use<> {
2607        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2608            return card.render(&tool_use.status, window, workspace, cx);
2609        }
2610
2611        let is_open = self
2612            .expanded_tool_uses
2613            .get(&tool_use.id)
2614            .copied()
2615            .unwrap_or_default();
2616
2617        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2618
2619        let fs = self
2620            .workspace
2621            .upgrade()
2622            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2623        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2624        let needs_confirmation_tools = tool_use.needs_confirmation;
2625
2626        let status_icons = div().child(match &tool_use.status {
2627            ToolUseStatus::NeedsConfirmation => {
2628                let icon = Icon::new(IconName::Warning)
2629                    .color(Color::Warning)
2630                    .size(IconSize::Small);
2631                icon.into_any_element()
2632            }
2633            ToolUseStatus::Pending
2634            | ToolUseStatus::InputStillStreaming
2635            | ToolUseStatus::Running => {
2636                let icon = Icon::new(IconName::ArrowCircle)
2637                    .color(Color::Accent)
2638                    .size(IconSize::Small);
2639                icon.with_animation(
2640                    "arrow-circle",
2641                    Animation::new(Duration::from_secs(2)).repeat(),
2642                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2643                )
2644                .into_any_element()
2645            }
2646            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2647            ToolUseStatus::Error(_) => {
2648                let icon = Icon::new(IconName::Close)
2649                    .color(Color::Error)
2650                    .size(IconSize::Small);
2651                icon.into_any_element()
2652            }
2653        });
2654
2655        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2656        let results_content_container = || v_flex().p_2().gap_0p5();
2657
2658        let results_content = v_flex()
2659            .gap_1()
2660            .child(
2661                results_content_container()
2662                    .child(
2663                        Label::new("Input")
2664                            .size(LabelSize::XSmall)
2665                            .color(Color::Muted)
2666                            .buffer_font(cx),
2667                    )
2668                    .child(
2669                        div()
2670                            .w_full()
2671                            .text_ui_sm(cx)
2672                            .children(rendered_tool_use.as_ref().map(|rendered| {
2673                                MarkdownElement::new(
2674                                    rendered.input.clone(),
2675                                    tool_use_markdown_style(window, cx),
2676                                )
2677                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2678                                    copy_button: false,
2679                                    border: false,
2680                                })
2681                                .on_url_click({
2682                                    let workspace = self.workspace.clone();
2683                                    move |text, window, cx| {
2684                                        open_markdown_link(text, workspace.clone(), window, cx);
2685                                    }
2686                                })
2687                            })),
2688                    ),
2689            )
2690            .map(|container| match tool_use.status {
2691                ToolUseStatus::Finished(_) => container.child(
2692                    results_content_container()
2693                        .border_t_1()
2694                        .border_color(self.tool_card_border_color(cx))
2695                        .child(
2696                            Label::new("Result")
2697                                .size(LabelSize::XSmall)
2698                                .color(Color::Muted)
2699                                .buffer_font(cx),
2700                        )
2701                        .child(div().w_full().text_ui_sm(cx).children(
2702                            rendered_tool_use.as_ref().map(|rendered| {
2703                                MarkdownElement::new(
2704                                    rendered.output.clone(),
2705                                    tool_use_markdown_style(window, cx),
2706                                )
2707                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2708                                    copy_button: false,
2709                                    border: false,
2710                                })
2711                                .on_url_click({
2712                                    let workspace = self.workspace.clone();
2713                                    move |text, window, cx| {
2714                                        open_markdown_link(text, workspace.clone(), window, cx);
2715                                    }
2716                                })
2717                                .into_any_element()
2718                            }),
2719                        )),
2720                ),
2721                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2722                    results_content_container()
2723                        .border_t_1()
2724                        .border_color(self.tool_card_border_color(cx))
2725                        .child(
2726                            h_flex()
2727                                .gap_1()
2728                                .child(
2729                                    Icon::new(IconName::ArrowCircle)
2730                                        .size(IconSize::Small)
2731                                        .color(Color::Accent)
2732                                        .with_animation(
2733                                            "arrow-circle",
2734                                            Animation::new(Duration::from_secs(2)).repeat(),
2735                                            |icon, delta| {
2736                                                icon.transform(Transformation::rotate(percentage(
2737                                                    delta,
2738                                                )))
2739                                            },
2740                                        ),
2741                                )
2742                                .child(
2743                                    Label::new("Running…")
2744                                        .size(LabelSize::XSmall)
2745                                        .color(Color::Muted)
2746                                        .buffer_font(cx),
2747                                ),
2748                        ),
2749                ),
2750                ToolUseStatus::Error(_) => container.child(
2751                    results_content_container()
2752                        .border_t_1()
2753                        .border_color(self.tool_card_border_color(cx))
2754                        .child(
2755                            Label::new("Error")
2756                                .size(LabelSize::XSmall)
2757                                .color(Color::Muted)
2758                                .buffer_font(cx),
2759                        )
2760                        .child(
2761                            div()
2762                                .text_ui_sm(cx)
2763                                .children(rendered_tool_use.as_ref().map(|rendered| {
2764                                    MarkdownElement::new(
2765                                        rendered.output.clone(),
2766                                        tool_use_markdown_style(window, cx),
2767                                    )
2768                                    .on_url_click({
2769                                        let workspace = self.workspace.clone();
2770                                        move |text, window, cx| {
2771                                            open_markdown_link(text, workspace.clone(), window, cx);
2772                                        }
2773                                    })
2774                                    .into_any_element()
2775                                })),
2776                        ),
2777                ),
2778                ToolUseStatus::Pending => container,
2779                ToolUseStatus::NeedsConfirmation => container.child(
2780                    results_content_container()
2781                        .border_t_1()
2782                        .border_color(self.tool_card_border_color(cx))
2783                        .child(
2784                            Label::new("Asking Permission")
2785                                .size(LabelSize::Small)
2786                                .color(Color::Muted)
2787                                .buffer_font(cx),
2788                        ),
2789                ),
2790            });
2791
2792        let gradient_overlay = |color: Hsla| {
2793            div()
2794                .h_full()
2795                .absolute()
2796                .w_12()
2797                .bottom_0()
2798                .map(|element| {
2799                    if is_status_finished {
2800                        element.right_6()
2801                    } else {
2802                        element.right(px(44.))
2803                    }
2804                })
2805                .bg(linear_gradient(
2806                    90.,
2807                    linear_color_stop(color, 1.),
2808                    linear_color_stop(color.opacity(0.2), 0.),
2809                ))
2810        };
2811
2812        v_flex().gap_1().mb_2().map(|element| {
2813            if !needs_confirmation_tools {
2814                element.child(
2815                    v_flex()
2816                        .child(
2817                            h_flex()
2818                                .group("disclosure-header")
2819                                .relative()
2820                                .gap_1p5()
2821                                .justify_between()
2822                                .opacity(0.8)
2823                                .hover(|style| style.opacity(1.))
2824                                .when(!is_status_finished, |this| this.pr_2())
2825                                .child(
2826                                    h_flex()
2827                                        .id("tool-label-container")
2828                                        .gap_1p5()
2829                                        .max_w_full()
2830                                        .overflow_x_scroll()
2831                                        .child(
2832                                            Icon::new(tool_use.icon)
2833                                                .size(IconSize::XSmall)
2834                                                .color(Color::Muted),
2835                                        )
2836                                        .child(
2837                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2838                                                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| {
2839                                                    open_markdown_link(text, workspace.clone(), window, cx);
2840                                                }}))
2841                                            ),
2842                                        ),
2843                                )
2844                                .child(
2845                                    h_flex()
2846                                        .gap_1()
2847                                        .child(
2848                                            div().visible_on_hover("disclosure-header").child(
2849                                                Disclosure::new("tool-use-disclosure", is_open)
2850                                                    .opened_icon(IconName::ChevronUp)
2851                                                    .closed_icon(IconName::ChevronDown)
2852                                                    .on_click(cx.listener({
2853                                                        let tool_use_id = tool_use.id.clone();
2854                                                        move |this, _event, _window, _cx| {
2855                                                            let is_open = this
2856                                                                .expanded_tool_uses
2857                                                                .entry(tool_use_id.clone())
2858                                                                .or_insert(false);
2859
2860                                                            *is_open = !*is_open;
2861                                                        }
2862                                                    })),
2863                                            ),
2864                                        )
2865                                        .child(status_icons),
2866                                )
2867                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2868                        )
2869                        .map(|parent| {
2870                            if !is_open {
2871                                return parent;
2872                            }
2873
2874                            parent.child(
2875                                v_flex()
2876                                    .mt_1()
2877                                    .border_1()
2878                                    .border_color(self.tool_card_border_color(cx))
2879                                    .bg(cx.theme().colors().editor_background)
2880                                    .rounded_lg()
2881                                    .child(results_content),
2882                            )
2883                        }),
2884                )
2885            } else {
2886                v_flex()
2887                    .mb_2()
2888                    .rounded_lg()
2889                    .border_1()
2890                    .border_color(self.tool_card_border_color(cx))
2891                    .overflow_hidden()
2892                    .child(
2893                        h_flex()
2894                            .group("disclosure-header")
2895                            .relative()
2896                            .justify_between()
2897                            .py_1()
2898                            .map(|element| {
2899                                if is_status_finished {
2900                                    element.pl_2().pr_0p5()
2901                                } else {
2902                                    element.px_2()
2903                                }
2904                            })
2905                            .bg(self.tool_card_header_bg(cx))
2906                            .map(|element| {
2907                                if is_open {
2908                                    element.border_b_1().rounded_t_md()
2909                                } else if needs_confirmation {
2910                                    element.rounded_t_md()
2911                                } else {
2912                                    element.rounded_md()
2913                                }
2914                            })
2915                            .border_color(self.tool_card_border_color(cx))
2916                            .child(
2917                                h_flex()
2918                                    .id("tool-label-container")
2919                                    .gap_1p5()
2920                                    .max_w_full()
2921                                    .overflow_x_scroll()
2922                                    .child(
2923                                        Icon::new(tool_use.icon)
2924                                            .size(IconSize::XSmall)
2925                                            .color(Color::Muted),
2926                                    )
2927                                    .child(
2928                                        h_flex().pr_8().text_ui_sm(cx).children(
2929                                            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| {
2930                                                open_markdown_link(text, workspace.clone(), window, cx);
2931                                            }}))
2932                                        ),
2933                                    ),
2934                            )
2935                            .child(
2936                                h_flex()
2937                                    .gap_1()
2938                                    .child(
2939                                        div().visible_on_hover("disclosure-header").child(
2940                                            Disclosure::new("tool-use-disclosure", is_open)
2941                                                .opened_icon(IconName::ChevronUp)
2942                                                .closed_icon(IconName::ChevronDown)
2943                                                .on_click(cx.listener({
2944                                                    let tool_use_id = tool_use.id.clone();
2945                                                    move |this, _event, _window, _cx| {
2946                                                        let is_open = this
2947                                                            .expanded_tool_uses
2948                                                            .entry(tool_use_id.clone())
2949                                                            .or_insert(false);
2950
2951                                                        *is_open = !*is_open;
2952                                                    }
2953                                                })),
2954                                        ),
2955                                    )
2956                                    .child(status_icons),
2957                            )
2958                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
2959                    )
2960                    .map(|parent| {
2961                        if !is_open {
2962                            return parent;
2963                        }
2964
2965                        parent.child(
2966                            v_flex()
2967                                .bg(cx.theme().colors().editor_background)
2968                                .map(|element| {
2969                                    if  needs_confirmation {
2970                                        element.rounded_none()
2971                                    } else {
2972                                        element.rounded_b_lg()
2973                                    }
2974                                })
2975                                .child(results_content),
2976                        )
2977                    })
2978                    .when(needs_confirmation, |this| {
2979                        this.child(
2980                            h_flex()
2981                                .py_1()
2982                                .pl_2()
2983                                .pr_1()
2984                                .gap_1()
2985                                .justify_between()
2986                                .bg(cx.theme().colors().editor_background)
2987                                .border_t_1()
2988                                .border_color(self.tool_card_border_color(cx))
2989                                .rounded_b_lg()
2990                                .child(
2991                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
2992                                )
2993                                .child(
2994                                    h_flex()
2995                                        .gap_0p5()
2996                                        .child({
2997                                            let tool_id = tool_use.id.clone();
2998                                            Button::new(
2999                                                "always-allow-tool-action",
3000                                                "Always Allow",
3001                                            )
3002                                            .label_size(LabelSize::Small)
3003                                            .icon(IconName::CheckDouble)
3004                                            .icon_position(IconPosition::Start)
3005                                            .icon_size(IconSize::Small)
3006                                            .icon_color(Color::Success)
3007                                            .tooltip(move |window, cx|  {
3008                                                Tooltip::with_meta(
3009                                                    "Never ask for permission",
3010                                                    None,
3011                                                    "Restore the original behavior in your Agent Panel settings",
3012                                                    window,
3013                                                    cx,
3014                                                )
3015                                            })
3016                                            .on_click(cx.listener(
3017                                                move |this, event, window, cx| {
3018                                                    if let Some(fs) = fs.clone() {
3019                                                        update_settings_file::<AssistantSettings>(
3020                                                            fs.clone(),
3021                                                            cx,
3022                                                            |settings, _| {
3023                                                                settings.set_always_allow_tool_actions(true);
3024                                                            },
3025                                                        );
3026                                                    }
3027                                                    this.handle_allow_tool(
3028                                                        tool_id.clone(),
3029                                                        event,
3030                                                        window,
3031                                                        cx,
3032                                                    )
3033                                                },
3034                                            ))
3035                                        })
3036                                        .child(ui::Divider::vertical())
3037                                        .child({
3038                                            let tool_id = tool_use.id.clone();
3039                                            Button::new("allow-tool-action", "Allow")
3040                                                .label_size(LabelSize::Small)
3041                                                .icon(IconName::Check)
3042                                                .icon_position(IconPosition::Start)
3043                                                .icon_size(IconSize::Small)
3044                                                .icon_color(Color::Success)
3045                                                .on_click(cx.listener(
3046                                                    move |this, event, window, cx| {
3047                                                        this.handle_allow_tool(
3048                                                            tool_id.clone(),
3049                                                            event,
3050                                                            window,
3051                                                            cx,
3052                                                        )
3053                                                    },
3054                                                ))
3055                                        })
3056                                        .child({
3057                                            let tool_id = tool_use.id.clone();
3058                                            let tool_name: Arc<str> = tool_use.name.into();
3059                                            Button::new("deny-tool", "Deny")
3060                                                .label_size(LabelSize::Small)
3061                                                .icon(IconName::Close)
3062                                                .icon_position(IconPosition::Start)
3063                                                .icon_size(IconSize::Small)
3064                                                .icon_color(Color::Error)
3065                                                .on_click(cx.listener(
3066                                                    move |this, event, window, cx| {
3067                                                        this.handle_deny_tool(
3068                                                            tool_id.clone(),
3069                                                            tool_name.clone(),
3070                                                            event,
3071                                                            window,
3072                                                            cx,
3073                                                        )
3074                                                    },
3075                                                ))
3076                                        }),
3077                                ),
3078                        )
3079                    })
3080            }
3081        }).into_any_element()
3082    }
3083
3084    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3085        let project_context = self.thread.read(cx).project_context();
3086        let project_context = project_context.borrow();
3087        let Some(project_context) = project_context.as_ref() else {
3088            return div().into_any();
3089        };
3090
3091        let user_rules_text = if project_context.user_rules.is_empty() {
3092            None
3093        } else if project_context.user_rules.len() == 1 {
3094            let user_rules = &project_context.user_rules[0];
3095
3096            match user_rules.title.as_ref() {
3097                Some(title) => Some(format!("Using \"{title}\" user rule")),
3098                None => Some("Using user rule".into()),
3099            }
3100        } else {
3101            Some(format!(
3102                "Using {} user rules",
3103                project_context.user_rules.len()
3104            ))
3105        };
3106
3107        let first_user_rules_id = project_context
3108            .user_rules
3109            .first()
3110            .map(|user_rules| user_rules.uuid.0);
3111
3112        let rules_files = project_context
3113            .worktrees
3114            .iter()
3115            .filter_map(|worktree| worktree.rules_file.as_ref())
3116            .collect::<Vec<_>>();
3117
3118        let rules_file_text = match rules_files.as_slice() {
3119            &[] => None,
3120            &[rules_file] => Some(format!(
3121                "Using project {:?} file",
3122                rules_file.path_in_worktree
3123            )),
3124            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3125        };
3126
3127        if user_rules_text.is_none() && rules_file_text.is_none() {
3128            return div().into_any();
3129        }
3130
3131        v_flex()
3132            .pt_2()
3133            .px_2p5()
3134            .gap_1()
3135            .when_some(user_rules_text, |parent, user_rules_text| {
3136                parent.child(
3137                    h_flex()
3138                        .w_full()
3139                        .child(
3140                            Icon::new(RULES_ICON)
3141                                .size(IconSize::XSmall)
3142                                .color(Color::Disabled),
3143                        )
3144                        .child(
3145                            Label::new(user_rules_text)
3146                                .size(LabelSize::XSmall)
3147                                .color(Color::Muted)
3148                                .truncate()
3149                                .buffer_font(cx)
3150                                .ml_1p5()
3151                                .mr_0p5(),
3152                        )
3153                        .child(
3154                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3155                                .shape(ui::IconButtonShape::Square)
3156                                .icon_size(IconSize::XSmall)
3157                                .icon_color(Color::Ignored)
3158                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3159                                .tooltip(Tooltip::text("View User Rules"))
3160                                .on_click(move |_event, window, cx| {
3161                                    window.dispatch_action(
3162                                        Box::new(OpenRulesLibrary {
3163                                            prompt_to_select: first_user_rules_id,
3164                                        }),
3165                                        cx,
3166                                    )
3167                                }),
3168                        ),
3169                )
3170            })
3171            .when_some(rules_file_text, |parent, rules_file_text| {
3172                parent.child(
3173                    h_flex()
3174                        .w_full()
3175                        .child(
3176                            Icon::new(IconName::File)
3177                                .size(IconSize::XSmall)
3178                                .color(Color::Disabled),
3179                        )
3180                        .child(
3181                            Label::new(rules_file_text)
3182                                .size(LabelSize::XSmall)
3183                                .color(Color::Muted)
3184                                .buffer_font(cx)
3185                                .ml_1p5()
3186                                .mr_0p5(),
3187                        )
3188                        .child(
3189                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3190                                .shape(ui::IconButtonShape::Square)
3191                                .icon_size(IconSize::XSmall)
3192                                .icon_color(Color::Ignored)
3193                                .on_click(cx.listener(Self::handle_open_rules))
3194                                .tooltip(Tooltip::text("View Rules")),
3195                        ),
3196                )
3197            })
3198            .into_any()
3199    }
3200
3201    fn handle_allow_tool(
3202        &mut self,
3203        tool_use_id: LanguageModelToolUseId,
3204        _: &ClickEvent,
3205        window: &mut Window,
3206        cx: &mut Context<Self>,
3207    ) {
3208        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3209            .thread
3210            .read(cx)
3211            .pending_tool(&tool_use_id)
3212            .map(|tool_use| tool_use.status.clone())
3213        {
3214            self.thread.update(cx, |thread, cx| {
3215                thread.run_tool(
3216                    c.tool_use_id.clone(),
3217                    c.ui_text.clone(),
3218                    c.input.clone(),
3219                    &c.messages,
3220                    c.tool.clone(),
3221                    Some(window.window_handle()),
3222                    cx,
3223                );
3224            });
3225        }
3226    }
3227
3228    fn handle_deny_tool(
3229        &mut self,
3230        tool_use_id: LanguageModelToolUseId,
3231        tool_name: Arc<str>,
3232        _: &ClickEvent,
3233        window: &mut Window,
3234        cx: &mut Context<Self>,
3235    ) {
3236        let window_handle = window.window_handle();
3237        self.thread.update(cx, |thread, cx| {
3238            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3239        });
3240    }
3241
3242    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3243        let project_context = self.thread.read(cx).project_context();
3244        let project_context = project_context.borrow();
3245        let Some(project_context) = project_context.as_ref() else {
3246            return;
3247        };
3248
3249        let project_entry_ids = project_context
3250            .worktrees
3251            .iter()
3252            .flat_map(|worktree| worktree.rules_file.as_ref())
3253            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3254            .collect::<Vec<_>>();
3255
3256        self.workspace
3257            .update(cx, move |workspace, cx| {
3258                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3259                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3260                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3261                let project = workspace.project().read(cx);
3262                let project_paths = project_entry_ids
3263                    .into_iter()
3264                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3265                    .collect::<Vec<_>>();
3266                for project_path in project_paths {
3267                    workspace
3268                        .open_path(project_path, None, true, window, cx)
3269                        .detach_and_log_err(cx);
3270                }
3271            })
3272            .ok();
3273    }
3274
3275    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3276        for window in self.notifications.drain(..) {
3277            window
3278                .update(cx, |_, window, _| {
3279                    window.remove_window();
3280                })
3281                .ok();
3282
3283            self.notification_subscriptions.remove(&window);
3284        }
3285    }
3286
3287    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3288        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3289            return None;
3290        }
3291
3292        Some(
3293            div()
3294                .occlude()
3295                .id("active-thread-scrollbar")
3296                .on_mouse_move(cx.listener(|_, _, _, cx| {
3297                    cx.notify();
3298                    cx.stop_propagation()
3299                }))
3300                .on_hover(|_, _, cx| {
3301                    cx.stop_propagation();
3302                })
3303                .on_any_mouse_down(|_, _, cx| {
3304                    cx.stop_propagation();
3305                })
3306                .on_mouse_up(
3307                    MouseButton::Left,
3308                    cx.listener(|_, _, _, cx| {
3309                        cx.stop_propagation();
3310                    }),
3311                )
3312                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3313                    cx.notify();
3314                }))
3315                .h_full()
3316                .absolute()
3317                .right_1()
3318                .top_1()
3319                .bottom_0()
3320                .w(px(12.))
3321                .cursor_default()
3322                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3323        )
3324    }
3325
3326    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3327        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3328        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3329            cx.background_executor()
3330                .timer(SCROLLBAR_SHOW_INTERVAL)
3331                .await;
3332            thread
3333                .update(cx, |thread, cx| {
3334                    if !thread.scrollbar_state.is_dragging() {
3335                        thread.show_scrollbar = false;
3336                        cx.notify();
3337                    }
3338                })
3339                .log_err();
3340        }))
3341    }
3342}
3343
3344pub enum ActiveThreadEvent {
3345    EditingMessageTokenCountChanged,
3346}
3347
3348impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3349
3350impl Render for ActiveThread {
3351    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3352        v_flex()
3353            .size_full()
3354            .relative()
3355            .on_mouse_move(cx.listener(|this, _, _, cx| {
3356                this.show_scrollbar = true;
3357                this.hide_scrollbar_later(cx);
3358                cx.notify();
3359            }))
3360            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3361                this.show_scrollbar = true;
3362                this.hide_scrollbar_later(cx);
3363                cx.notify();
3364            }))
3365            .on_mouse_up(
3366                MouseButton::Left,
3367                cx.listener(|this, _, _, cx| {
3368                    this.hide_scrollbar_later(cx);
3369                }),
3370            )
3371            .child(list(self.list_state.clone()).flex_grow())
3372            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3373                this.child(scrollbar)
3374            })
3375    }
3376}
3377
3378pub(crate) fn open_context(
3379    context: &AgentContextHandle,
3380    workspace: Entity<Workspace>,
3381    window: &mut Window,
3382    cx: &mut App,
3383) {
3384    match context {
3385        AgentContextHandle::File(file_context) => {
3386            if let Some(project_path) = file_context.project_path(cx) {
3387                workspace.update(cx, |workspace, cx| {
3388                    workspace
3389                        .open_path(project_path, None, true, window, cx)
3390                        .detach_and_log_err(cx);
3391                });
3392            }
3393        }
3394
3395        AgentContextHandle::Directory(directory_context) => {
3396            let entry_id = directory_context.entry_id;
3397            workspace.update(cx, |workspace, cx| {
3398                workspace.project().update(cx, |_project, cx| {
3399                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3400                })
3401            })
3402        }
3403
3404        AgentContextHandle::Symbol(symbol_context) => {
3405            let buffer = symbol_context.buffer.read(cx);
3406            if let Some(project_path) = buffer.project_path(cx) {
3407                let snapshot = buffer.snapshot();
3408                let target_position = symbol_context.range.start.to_point(&snapshot);
3409                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3410                    .detach();
3411            }
3412        }
3413
3414        AgentContextHandle::Selection(selection_context) => {
3415            let buffer = selection_context.buffer.read(cx);
3416            if let Some(project_path) = buffer.project_path(cx) {
3417                let snapshot = buffer.snapshot();
3418                let target_position = selection_context.range.start.to_point(&snapshot);
3419
3420                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3421                    .detach();
3422            }
3423        }
3424
3425        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3426            cx.open_url(&fetched_url_context.url);
3427        }
3428
3429        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3430            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3431                panel.update(cx, |panel, cx| {
3432                    let thread_id = thread_context.thread.read(cx).id().clone();
3433                    panel
3434                        .open_thread_by_id(&thread_id, window, cx)
3435                        .detach_and_log_err(cx)
3436                });
3437            }
3438        }),
3439
3440        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3441            Box::new(OpenRulesLibrary {
3442                prompt_to_select: Some(rules_context.prompt_id.0),
3443            }),
3444            cx,
3445        ),
3446
3447        AgentContextHandle::Image(_) => {}
3448    }
3449}
3450
3451fn open_editor_at_position(
3452    project_path: project::ProjectPath,
3453    target_position: Point,
3454    workspace: &Entity<Workspace>,
3455    window: &mut Window,
3456    cx: &mut App,
3457) -> Task<()> {
3458    let open_task = workspace.update(cx, |workspace, cx| {
3459        workspace.open_path(project_path, None, true, window, cx)
3460    });
3461    window.spawn(cx, async move |cx| {
3462        if let Some(active_editor) = open_task
3463            .await
3464            .log_err()
3465            .and_then(|item| item.downcast::<Editor>())
3466        {
3467            active_editor
3468                .downgrade()
3469                .update_in(cx, |editor, window, cx| {
3470                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3471                })
3472                .log_err();
3473        }
3474    })
3475}