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, QueueState, Thread,
   8    ThreadError, 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_last_message
1739            .then(|| match (thread.queue_state(), is_generating) {
1740                (Some(QueueState::Sending), _) => Some(
1741                    AnimatedLabel::new("Sending")
1742                        .size(LabelSize::Small)
1743                        .into_any_element(),
1744                ),
1745                (Some(QueueState::Queued { position }), _) => Some(
1746                    Label::new(format!("Queue position: {position}"))
1747                        .size(LabelSize::Small)
1748                        .color(Color::Muted)
1749                        .into_any_element(),
1750                ),
1751                (_, true) => Some(
1752                    AnimatedLabel::new("Generating")
1753                        .size(LabelSize::Small)
1754                        .into_any_element(),
1755                ),
1756                _ => None,
1757            })
1758            .flatten();
1759
1760        let editing_message_state = self
1761            .editing_message
1762            .as_ref()
1763            .filter(|(id, _)| *id == message_id)
1764            .map(|(_, state)| state);
1765
1766        let colors = cx.theme().colors();
1767        let editor_bg_color = colors.editor_background;
1768
1769        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileCode)
1770            .shape(ui::IconButtonShape::Square)
1771            .icon_size(IconSize::XSmall)
1772            .icon_color(Color::Ignored)
1773            .tooltip(Tooltip::text("Open Thread as Markdown"))
1774            .on_click(|_, window, cx| {
1775                window.dispatch_action(Box::new(OpenActiveThreadAsMarkdown), cx)
1776            });
1777
1778        // For all items that should be aligned with the LLM's response.
1779        const RESPONSE_PADDING_X: Pixels = px(19.);
1780
1781        let feedback_container = h_flex()
1782            .group("feedback_container")
1783            .mt_1()
1784            .py_2()
1785            .px(RESPONSE_PADDING_X)
1786            .gap_1()
1787            .flex_wrap()
1788            .justify_end();
1789        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1790            Some(feedback) => feedback_container
1791                .child(
1792                    div().mr_1().visible_on_hover("feedback_container").child(
1793                        Label::new(match feedback {
1794                            ThreadFeedback::Positive => "Thanks for your feedback!",
1795                            ThreadFeedback::Negative => {
1796                                "We appreciate your feedback and will use it to improve."
1797                            }
1798                        })
1799                    .color(Color::Muted)
1800                    .size(LabelSize::XSmall)
1801                    .truncate())
1802                )
1803                .child(
1804                    h_flex()
1805                        .pr_1()
1806                        .gap_1()
1807                        .child(
1808                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1809                                .shape(ui::IconButtonShape::Square)
1810                                .icon_size(IconSize::XSmall)
1811                                .icon_color(match feedback {
1812                                    ThreadFeedback::Positive => Color::Accent,
1813                                    ThreadFeedback::Negative => Color::Ignored,
1814                                })
1815                                .tooltip(Tooltip::text("Helpful Response"))
1816                                .on_click(cx.listener(move |this, _, window, cx| {
1817                                    this.handle_feedback_click(
1818                                        message_id,
1819                                        ThreadFeedback::Positive,
1820                                        window,
1821                                        cx,
1822                                    );
1823                                })),
1824                        )
1825                        .child(
1826                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1827                                .shape(ui::IconButtonShape::Square)
1828                                .icon_size(IconSize::XSmall)
1829                                .icon_color(match feedback {
1830                                    ThreadFeedback::Positive => Color::Ignored,
1831                                    ThreadFeedback::Negative => Color::Accent,
1832                                })
1833                                .tooltip(Tooltip::text("Not Helpful"))
1834                                .on_click(cx.listener(move |this, _, window, cx| {
1835                                    this.handle_feedback_click(
1836                                        message_id,
1837                                        ThreadFeedback::Negative,
1838                                        window,
1839                                        cx,
1840                                    );
1841                                })),
1842                        )
1843                        .child(open_as_markdown),
1844                )
1845                .into_any_element(),
1846            None => feedback_container
1847                .child(
1848                    div().mr_1().visible_on_hover("feedback_container").child(
1849                        Label::new(
1850                            "Rating the thread sends all of your current conversation to the Zed team.",
1851                        )
1852                        .color(Color::Muted)
1853                    .size(LabelSize::XSmall)
1854                    .truncate())
1855                )
1856                .child(
1857                    h_flex()
1858                        .pr_1()
1859                        .gap_1()
1860                        .child(
1861                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1862                                .icon_size(IconSize::XSmall)
1863                                .icon_color(Color::Ignored)
1864                                .shape(ui::IconButtonShape::Square)
1865                                .tooltip(Tooltip::text("Helpful Response"))
1866                                .on_click(cx.listener(move |this, _, window, cx| {
1867                                    this.handle_feedback_click(
1868                                        message_id,
1869                                        ThreadFeedback::Positive,
1870                                        window,
1871                                        cx,
1872                                    );
1873                                })),
1874                        )
1875                        .child(
1876                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1877                                .icon_size(IconSize::XSmall)
1878                                .icon_color(Color::Ignored)
1879                                .shape(ui::IconButtonShape::Square)
1880                                .tooltip(Tooltip::text("Not Helpful"))
1881                                .on_click(cx.listener(move |this, _, window, cx| {
1882                                    this.handle_feedback_click(
1883                                        message_id,
1884                                        ThreadFeedback::Negative,
1885                                        window,
1886                                        cx,
1887                                    );
1888                                })),
1889                        )
1890                        .child(open_as_markdown),
1891                )
1892                .into_any_element(),
1893        };
1894
1895        let message_is_empty = message.should_display_content();
1896        let has_content = !message_is_empty || !added_context.is_empty();
1897
1898        let message_content = has_content.then(|| {
1899            if let Some(state) = editing_message_state.as_ref() {
1900                self.render_edit_message_editor(state, window, cx)
1901                    .into_any_element()
1902            } else {
1903                v_flex()
1904                    .w_full()
1905                    .gap_1()
1906                    .when(!message_is_empty, |parent| {
1907                        parent.child(div().min_h_6().child(self.render_message_content(
1908                            message_id,
1909                            rendered_message,
1910                            has_tool_uses,
1911                            workspace.clone(),
1912                            window,
1913                            cx,
1914                        )))
1915                    })
1916                    .when(!added_context.is_empty(), |parent| {
1917                        parent.child(h_flex().flex_wrap().gap_1().children(
1918                            added_context.into_iter().map(|added_context| {
1919                                let context = added_context.handle.clone();
1920                                ContextPill::added(added_context, false, false, None).on_click(
1921                                    Rc::new(cx.listener({
1922                                        let workspace = workspace.clone();
1923                                        move |_, _, window, cx| {
1924                                            if let Some(workspace) = workspace.upgrade() {
1925                                                open_context(&context, workspace, window, cx);
1926                                                cx.notify();
1927                                            }
1928                                            cx.stop_propagation();
1929                                        }
1930                                    })),
1931                                )
1932                            }),
1933                        ))
1934                    })
1935                    .into_any_element()
1936            }
1937        });
1938
1939        let styled_message = match message.role {
1940            Role::User => v_flex()
1941                .id(("message-container", ix))
1942                .pt_2()
1943                .pl_2()
1944                .pr_2p5()
1945                .pb_4()
1946                .child(
1947                    v_flex()
1948                        .id(("user-message", ix))
1949                        .bg(editor_bg_color)
1950                        .rounded_lg()
1951                        .shadow_md()
1952                        .border_1()
1953                        .border_color(colors.border)
1954                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1955                        .cursor_pointer()
1956                        .child(
1957                            h_flex()
1958                                .p_2p5()
1959                                .gap_1()
1960                                .children(message_content)
1961                                .when_some(editing_message_state, |this, state| {
1962                                    let focus_handle = state.editor.focus_handle(cx).clone();
1963                                    this.w_full().justify_between().child(
1964                                        h_flex()
1965                                            .gap_0p5()
1966                                            .child(
1967                                                IconButton::new(
1968                                                    "cancel-edit-message",
1969                                                    IconName::Close,
1970                                                )
1971                                                .shape(ui::IconButtonShape::Square)
1972                                                .icon_color(Color::Error)
1973                                                .tooltip({
1974                                                    let focus_handle = focus_handle.clone();
1975                                                    move |window, cx| {
1976                                                        Tooltip::for_action_in(
1977                                                            "Cancel Edit",
1978                                                            &menu::Cancel,
1979                                                            &focus_handle,
1980                                                            window,
1981                                                            cx,
1982                                                        )
1983                                                    }
1984                                                })
1985                                                .on_click(cx.listener(Self::handle_cancel_click)),
1986                                            )
1987                                            .child(
1988                                                IconButton::new(
1989                                                    "confirm-edit-message",
1990                                                    IconName::Check,
1991                                                )
1992                                                .disabled(state.editor.read(cx).is_empty(cx))
1993                                                .shape(ui::IconButtonShape::Square)
1994                                                .icon_color(Color::Success)
1995                                                .tooltip({
1996                                                    let focus_handle = focus_handle.clone();
1997                                                    move |window, cx| {
1998                                                        Tooltip::for_action_in(
1999                                                            "Regenerate",
2000                                                            &menu::Confirm,
2001                                                            &focus_handle,
2002                                                            window,
2003                                                            cx,
2004                                                        )
2005                                                    }
2006                                                })
2007                                                .on_click(
2008                                                    cx.listener(Self::handle_regenerate_click),
2009                                                ),
2010                                            ),
2011                                    )
2012                                }),
2013                        )
2014                        .on_click(cx.listener({
2015                            let message_segments = message.segments.clone();
2016                            move |this, _, window, cx| {
2017                                this.start_editing_message(
2018                                    message_id,
2019                                    &message_segments,
2020                                    &message_creases,
2021                                    window,
2022                                    cx,
2023                                );
2024                            }
2025                        })),
2026                ),
2027            Role::Assistant => v_flex()
2028                .id(("message-container", ix))
2029                .px(RESPONSE_PADDING_X)
2030                .gap_2()
2031                .children(message_content)
2032                .when(has_tool_uses, |parent| {
2033                    parent.children(tool_uses.into_iter().map(|tool_use| {
2034                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2035                    }))
2036                }),
2037            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2038                v_flex()
2039                    .bg(colors.editor_background)
2040                    .rounded_sm()
2041                    .child(div().p_4().children(message_content)),
2042            ),
2043        };
2044
2045        let after_editing_message = self
2046            .editing_message
2047            .as_ref()
2048            .map_or(false, |(editing_message_id, _)| {
2049                message_id > *editing_message_id
2050            });
2051
2052        let panel_background = cx.theme().colors().panel_background;
2053
2054        v_flex()
2055            .w_full()
2056            .when_some(checkpoint, |parent, checkpoint| {
2057                let mut is_pending = false;
2058                let mut error = None;
2059                if let Some(last_restore_checkpoint) =
2060                    self.thread.read(cx).last_restore_checkpoint()
2061                {
2062                    if last_restore_checkpoint.message_id() == message_id {
2063                        match last_restore_checkpoint {
2064                            LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2065                            LastRestoreCheckpoint::Error { error: err, .. } => {
2066                                error = Some(err.clone());
2067                            }
2068                        }
2069                    }
2070                }
2071
2072                let restore_checkpoint_button =
2073                    Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2074                        .icon(if error.is_some() {
2075                            IconName::XCircle
2076                        } else {
2077                            IconName::Undo
2078                        })
2079                        .icon_size(IconSize::XSmall)
2080                        .icon_position(IconPosition::Start)
2081                        .icon_color(if error.is_some() {
2082                            Some(Color::Error)
2083                        } else {
2084                            None
2085                        })
2086                        .label_size(LabelSize::XSmall)
2087                        .disabled(is_pending)
2088                        .on_click(cx.listener(move |this, _, _window, cx| {
2089                            this.thread.update(cx, |thread, cx| {
2090                                thread
2091                                    .restore_checkpoint(checkpoint.clone(), cx)
2092                                    .detach_and_log_err(cx);
2093                            });
2094                        }));
2095
2096                let restore_checkpoint_button = if is_pending {
2097                    restore_checkpoint_button
2098                        .with_animation(
2099                            ("pulsating-restore-checkpoint-button", ix),
2100                            Animation::new(Duration::from_secs(2))
2101                                .repeat()
2102                                .with_easing(pulsating_between(0.6, 1.)),
2103                            |label, delta| label.alpha(delta),
2104                        )
2105                        .into_any_element()
2106                } else if let Some(error) = error {
2107                    restore_checkpoint_button
2108                        .tooltip(Tooltip::text(error.to_string()))
2109                        .into_any_element()
2110                } else {
2111                    restore_checkpoint_button.into_any_element()
2112                };
2113
2114                parent.child(
2115                    h_flex()
2116                        .pt_2p5()
2117                        .px_2p5()
2118                        .w_full()
2119                        .gap_1()
2120                        .child(ui::Divider::horizontal())
2121                        .child(restore_checkpoint_button)
2122                        .child(ui::Divider::horizontal()),
2123                )
2124            })
2125            .when(is_first_message, |parent| {
2126                parent.child(self.render_rules_item(cx))
2127            })
2128            .child(styled_message)
2129            .when_some(generating_label, |this, generating_label| {
2130                this.child(
2131                    h_flex()
2132                        .h_8()
2133                        .mt_2()
2134                        .mb_4()
2135                        .ml_4()
2136                        .py_1p5()
2137                        .child(generating_label),
2138                )
2139            })
2140            .when(show_feedback, move |parent| {
2141                parent.child(feedback_items).when_some(
2142                    self.open_feedback_editors.get(&message_id),
2143                    move |parent, feedback_editor| {
2144                        let focus_handle = feedback_editor.focus_handle(cx);
2145                        parent.child(
2146                            v_flex()
2147                                .key_context("AgentFeedbackMessageEditor")
2148                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2149                                    this.open_feedback_editors.remove(&message_id);
2150                                    cx.notify();
2151                                }))
2152                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2153                                    this.submit_feedback_message(message_id, cx);
2154                                    cx.notify();
2155                                }))
2156                                .on_action(cx.listener(Self::confirm_editing_message))
2157                                .mb_2()
2158                                .mx_4()
2159                                .p_2()
2160                                .rounded_md()
2161                                .border_1()
2162                                .border_color(cx.theme().colors().border)
2163                                .bg(cx.theme().colors().editor_background)
2164                                .child(feedback_editor.clone())
2165                                .child(
2166                                    h_flex()
2167                                        .gap_1()
2168                                        .justify_end()
2169                                        .child(
2170                                            Button::new("dismiss-feedback-message", "Cancel")
2171                                                .label_size(LabelSize::Small)
2172                                                .key_binding(
2173                                                    KeyBinding::for_action_in(
2174                                                        &menu::Cancel,
2175                                                        &focus_handle,
2176                                                        window,
2177                                                        cx,
2178                                                    )
2179                                                    .map(|kb| kb.size(rems_from_px(10.))),
2180                                                )
2181                                                .on_click(cx.listener(
2182                                                    move |this, _, _window, cx| {
2183                                                        this.open_feedback_editors
2184                                                            .remove(&message_id);
2185                                                        cx.notify();
2186                                                    },
2187                                                )),
2188                                        )
2189                                        .child(
2190                                            Button::new(
2191                                                "submit-feedback-message",
2192                                                "Share Feedback",
2193                                            )
2194                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2195                                            .label_size(LabelSize::Small)
2196                                            .key_binding(
2197                                                KeyBinding::for_action_in(
2198                                                    &menu::Confirm,
2199                                                    &focus_handle,
2200                                                    window,
2201                                                    cx,
2202                                                )
2203                                                .map(|kb| kb.size(rems_from_px(10.))),
2204                                            )
2205                                            .on_click(
2206                                                cx.listener(move |this, _, _window, cx| {
2207                                                    this.submit_feedback_message(message_id, cx);
2208                                                    cx.notify()
2209                                                }),
2210                                            ),
2211                                        ),
2212                                ),
2213                        )
2214                    },
2215                )
2216            })
2217            .when(after_editing_message, |parent| {
2218                // Backdrop to dim out the whole thread below the editing user message
2219                parent.relative().child(
2220                    div()
2221                        .occlude()
2222                        .absolute()
2223                        .inset_0()
2224                        .size_full()
2225                        .bg(panel_background)
2226                        .opacity(0.8),
2227                )
2228            })
2229            .into_any()
2230    }
2231
2232    fn render_message_content(
2233        &self,
2234        message_id: MessageId,
2235        rendered_message: &RenderedMessage,
2236        has_tool_uses: bool,
2237        workspace: WeakEntity<Workspace>,
2238        window: &Window,
2239        cx: &Context<Self>,
2240    ) -> impl IntoElement {
2241        let is_last_message = self.messages.last() == Some(&message_id);
2242        let is_generating = self.thread.read(cx).is_generating();
2243        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2244            rendered_message
2245                .segments
2246                .iter()
2247                .enumerate()
2248                .next_back()
2249                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2250                .map(|(index, _)| index)
2251        } else {
2252            None
2253        };
2254
2255        let message_role = self
2256            .thread
2257            .read(cx)
2258            .message(message_id)
2259            .map(|m| m.role)
2260            .unwrap_or(Role::User);
2261
2262        let is_assistant_message = message_role == Role::Assistant;
2263        let is_user_message = message_role == Role::User;
2264
2265        v_flex()
2266            .text_ui(cx)
2267            .gap_2()
2268            .when(is_user_message, |this| this.text_xs())
2269            .children(
2270                rendered_message.segments.iter().enumerate().map(
2271                    |(index, segment)| match segment {
2272                        RenderedMessageSegment::Thinking {
2273                            content,
2274                            scroll_handle,
2275                        } => self
2276                            .render_message_thinking_segment(
2277                                message_id,
2278                                index,
2279                                content.clone(),
2280                                &scroll_handle,
2281                                Some(index) == pending_thinking_segment_index,
2282                                window,
2283                                cx,
2284                            )
2285                            .into_any_element(),
2286                        RenderedMessageSegment::Text(markdown) => {
2287                            let markdown_element = MarkdownElement::new(
2288                                markdown.clone(),
2289                                if is_user_message {
2290                                    let mut style = default_markdown_style(window, cx);
2291                                    let mut text_style = window.text_style();
2292                                    let theme_settings = ThemeSettings::get_global(cx);
2293
2294                                    let buffer_font = theme_settings.buffer_font.family.clone();
2295                                    let buffer_font_size = TextSize::Small.rems(cx);
2296
2297                                    text_style.refine(&TextStyleRefinement {
2298                                        font_family: Some(buffer_font),
2299                                        font_size: Some(buffer_font_size.into()),
2300                                        ..Default::default()
2301                                    });
2302
2303                                    style.base_text_style = text_style;
2304                                    style
2305                                } else {
2306                                    default_markdown_style(window, cx)
2307                                },
2308                            );
2309
2310                            let markdown_element = if is_assistant_message {
2311                                markdown_element.code_block_renderer(
2312                                    markdown::CodeBlockRenderer::Custom {
2313                                        render: Arc::new({
2314                                            let workspace = workspace.clone();
2315                                            let active_thread = cx.entity();
2316                                            move |kind,
2317                                                  parsed_markdown,
2318                                                  range,
2319                                                  metadata,
2320                                                  window,
2321                                                  cx| {
2322                                                render_markdown_code_block(
2323                                                    message_id,
2324                                                    range.start,
2325                                                    kind,
2326                                                    parsed_markdown,
2327                                                    metadata,
2328                                                    active_thread.clone(),
2329                                                    workspace.clone(),
2330                                                    window,
2331                                                    cx,
2332                                                )
2333                                            }
2334                                        }),
2335                                        transform: Some(Arc::new({
2336                                            let active_thread = cx.entity();
2337                                            let editor_bg = cx.theme().colors().editor_background;
2338
2339                                            move |el, range, metadata, _, cx| {
2340                                                let is_expanded = active_thread
2341                                                    .read(cx)
2342                                                    .expanded_code_blocks
2343                                                    .get(&(message_id, range.start))
2344                                                    .copied()
2345                                                    .unwrap_or(true);
2346
2347                                                if is_expanded
2348                                                    || metadata.line_count
2349                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2350                                                {
2351                                                    return el;
2352                                                }
2353                                                el.child(
2354                                                    div()
2355                                                        .absolute()
2356                                                        .bottom_0()
2357                                                        .left_0()
2358                                                        .w_full()
2359                                                        .h_1_4()
2360                                                        .rounded_b_lg()
2361                                                        .bg(linear_gradient(
2362                                                            0.,
2363                                                            linear_color_stop(editor_bg, 0.),
2364                                                            linear_color_stop(
2365                                                                editor_bg.opacity(0.),
2366                                                                1.,
2367                                                            ),
2368                                                        )),
2369                                                )
2370                                            }
2371                                        })),
2372                                    },
2373                                )
2374                            } else {
2375                                markdown_element.code_block_renderer(
2376                                    markdown::CodeBlockRenderer::Default {
2377                                        copy_button: false,
2378                                        border: true,
2379                                    },
2380                                )
2381                            };
2382
2383                            div()
2384                                .child(markdown_element.on_url_click({
2385                                    let workspace = self.workspace.clone();
2386                                    move |text, window, cx| {
2387                                        open_markdown_link(text, workspace.clone(), window, cx);
2388                                        cx.stop_propagation();
2389                                    }
2390                                }))
2391                                .into_any_element()
2392                        }
2393                    },
2394                ),
2395            )
2396    }
2397
2398    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2399        cx.theme().colors().border.opacity(0.5)
2400    }
2401
2402    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2403        cx.theme()
2404            .colors()
2405            .element_background
2406            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2407    }
2408
2409    fn render_message_thinking_segment(
2410        &self,
2411        message_id: MessageId,
2412        ix: usize,
2413        markdown: Entity<Markdown>,
2414        scroll_handle: &ScrollHandle,
2415        pending: bool,
2416        window: &Window,
2417        cx: &Context<Self>,
2418    ) -> impl IntoElement {
2419        let is_open = self
2420            .expanded_thinking_segments
2421            .get(&(message_id, ix))
2422            .copied()
2423            .unwrap_or_default();
2424
2425        let editor_bg = cx.theme().colors().panel_background;
2426
2427        div().map(|this| {
2428            if pending {
2429                this.v_flex()
2430                    .mt_neg_2()
2431                    .mb_1p5()
2432                    .child(
2433                        h_flex()
2434                            .group("disclosure-header")
2435                            .justify_between()
2436                            .child(
2437                                h_flex()
2438                                    .gap_1p5()
2439                                    .child(
2440                                        Icon::new(IconName::LightBulb)
2441                                            .size(IconSize::XSmall)
2442                                            .color(Color::Muted),
2443                                    )
2444                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2445                            )
2446                            .child(
2447                                h_flex()
2448                                    .gap_1()
2449                                    .child(
2450                                        div().visible_on_hover("disclosure-header").child(
2451                                            Disclosure::new("thinking-disclosure", is_open)
2452                                                .opened_icon(IconName::ChevronUp)
2453                                                .closed_icon(IconName::ChevronDown)
2454                                                .on_click(cx.listener({
2455                                                    move |this, _event, _window, _cx| {
2456                                                        let is_open = this
2457                                                            .expanded_thinking_segments
2458                                                            .entry((message_id, ix))
2459                                                            .or_insert(false);
2460
2461                                                        *is_open = !*is_open;
2462                                                    }
2463                                                })),
2464                                        ),
2465                                    )
2466                                    .child({
2467                                        Icon::new(IconName::ArrowCircle)
2468                                            .color(Color::Accent)
2469                                            .size(IconSize::Small)
2470                                            .with_animation(
2471                                                "arrow-circle",
2472                                                Animation::new(Duration::from_secs(2)).repeat(),
2473                                                |icon, delta| {
2474                                                    icon.transform(Transformation::rotate(
2475                                                        percentage(delta),
2476                                                    ))
2477                                                },
2478                                            )
2479                                    }),
2480                            ),
2481                    )
2482                    .when(!is_open, |this| {
2483                        let gradient_overlay = div()
2484                            .rounded_b_lg()
2485                            .h_full()
2486                            .absolute()
2487                            .w_full()
2488                            .bottom_0()
2489                            .left_0()
2490                            .bg(linear_gradient(
2491                                180.,
2492                                linear_color_stop(editor_bg, 1.),
2493                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2494                            ));
2495
2496                        this.child(
2497                            div()
2498                                .relative()
2499                                .bg(editor_bg)
2500                                .rounded_b_lg()
2501                                .mt_2()
2502                                .pl_4()
2503                                .child(
2504                                    div()
2505                                        .id(("thinking-content", ix))
2506                                        .max_h_20()
2507                                        .track_scroll(scroll_handle)
2508                                        .text_ui_sm(cx)
2509                                        .overflow_hidden()
2510                                        .child(
2511                                            MarkdownElement::new(
2512                                                markdown.clone(),
2513                                                default_markdown_style(window, cx),
2514                                            )
2515                                            .on_url_click({
2516                                                let workspace = self.workspace.clone();
2517                                                move |text, window, cx| {
2518                                                    open_markdown_link(
2519                                                        text,
2520                                                        workspace.clone(),
2521                                                        window,
2522                                                        cx,
2523                                                    );
2524                                                }
2525                                            }),
2526                                        ),
2527                                )
2528                                .child(gradient_overlay),
2529                        )
2530                    })
2531                    .when(is_open, |this| {
2532                        this.child(
2533                            div()
2534                                .id(("thinking-content", ix))
2535                                .h_full()
2536                                .bg(editor_bg)
2537                                .text_ui_sm(cx)
2538                                .child(
2539                                    MarkdownElement::new(
2540                                        markdown.clone(),
2541                                        default_markdown_style(window, cx),
2542                                    )
2543                                    .on_url_click({
2544                                        let workspace = self.workspace.clone();
2545                                        move |text, window, cx| {
2546                                            open_markdown_link(text, workspace.clone(), window, cx);
2547                                        }
2548                                    }),
2549                                ),
2550                        )
2551                    })
2552            } else {
2553                this.v_flex()
2554                    .mt_neg_2()
2555                    .child(
2556                        h_flex()
2557                            .group("disclosure-header")
2558                            .pr_1()
2559                            .justify_between()
2560                            .opacity(0.8)
2561                            .hover(|style| style.opacity(1.))
2562                            .child(
2563                                h_flex()
2564                                    .gap_1p5()
2565                                    .child(
2566                                        Icon::new(IconName::LightBulb)
2567                                            .size(IconSize::XSmall)
2568                                            .color(Color::Muted),
2569                                    )
2570                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2571                            )
2572                            .child(
2573                                div().visible_on_hover("disclosure-header").child(
2574                                    Disclosure::new("thinking-disclosure", is_open)
2575                                        .opened_icon(IconName::ChevronUp)
2576                                        .closed_icon(IconName::ChevronDown)
2577                                        .on_click(cx.listener({
2578                                            move |this, _event, _window, _cx| {
2579                                                let is_open = this
2580                                                    .expanded_thinking_segments
2581                                                    .entry((message_id, ix))
2582                                                    .or_insert(false);
2583
2584                                                *is_open = !*is_open;
2585                                            }
2586                                        })),
2587                                ),
2588                            ),
2589                    )
2590                    .child(
2591                        div()
2592                            .id(("thinking-content", ix))
2593                            .relative()
2594                            .mt_1p5()
2595                            .ml_1p5()
2596                            .pl_2p5()
2597                            .border_l_1()
2598                            .border_color(cx.theme().colors().border_variant)
2599                            .text_ui_sm(cx)
2600                            .when(is_open, |this| {
2601                                this.child(
2602                                    MarkdownElement::new(
2603                                        markdown.clone(),
2604                                        default_markdown_style(window, cx),
2605                                    )
2606                                    .on_url_click({
2607                                        let workspace = self.workspace.clone();
2608                                        move |text, window, cx| {
2609                                            open_markdown_link(text, workspace.clone(), window, cx);
2610                                        }
2611                                    }),
2612                                )
2613                            }),
2614                    )
2615            }
2616        })
2617    }
2618
2619    fn render_tool_use(
2620        &self,
2621        tool_use: ToolUse,
2622        window: &mut Window,
2623        workspace: WeakEntity<Workspace>,
2624        cx: &mut Context<Self>,
2625    ) -> impl IntoElement + use<> {
2626        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2627            return card.render(&tool_use.status, window, workspace, cx);
2628        }
2629
2630        let is_open = self
2631            .expanded_tool_uses
2632            .get(&tool_use.id)
2633            .copied()
2634            .unwrap_or_default();
2635
2636        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2637
2638        let fs = self
2639            .workspace
2640            .upgrade()
2641            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2642        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2643        let needs_confirmation_tools = tool_use.needs_confirmation;
2644
2645        let status_icons = div().child(match &tool_use.status {
2646            ToolUseStatus::NeedsConfirmation => {
2647                let icon = Icon::new(IconName::Warning)
2648                    .color(Color::Warning)
2649                    .size(IconSize::Small);
2650                icon.into_any_element()
2651            }
2652            ToolUseStatus::Pending
2653            | ToolUseStatus::InputStillStreaming
2654            | ToolUseStatus::Running => {
2655                let icon = Icon::new(IconName::ArrowCircle)
2656                    .color(Color::Accent)
2657                    .size(IconSize::Small);
2658                icon.with_animation(
2659                    "arrow-circle",
2660                    Animation::new(Duration::from_secs(2)).repeat(),
2661                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2662                )
2663                .into_any_element()
2664            }
2665            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2666            ToolUseStatus::Error(_) => {
2667                let icon = Icon::new(IconName::Close)
2668                    .color(Color::Error)
2669                    .size(IconSize::Small);
2670                icon.into_any_element()
2671            }
2672        });
2673
2674        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2675        let results_content_container = || v_flex().p_2().gap_0p5();
2676
2677        let results_content = v_flex()
2678            .gap_1()
2679            .child(
2680                results_content_container()
2681                    .child(
2682                        Label::new("Input")
2683                            .size(LabelSize::XSmall)
2684                            .color(Color::Muted)
2685                            .buffer_font(cx),
2686                    )
2687                    .child(
2688                        div()
2689                            .w_full()
2690                            .text_ui_sm(cx)
2691                            .children(rendered_tool_use.as_ref().map(|rendered| {
2692                                MarkdownElement::new(
2693                                    rendered.input.clone(),
2694                                    tool_use_markdown_style(window, cx),
2695                                )
2696                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2697                                    copy_button: false,
2698                                    border: false,
2699                                })
2700                                .on_url_click({
2701                                    let workspace = self.workspace.clone();
2702                                    move |text, window, cx| {
2703                                        open_markdown_link(text, workspace.clone(), window, cx);
2704                                    }
2705                                })
2706                            })),
2707                    ),
2708            )
2709            .map(|container| match tool_use.status {
2710                ToolUseStatus::Finished(_) => container.child(
2711                    results_content_container()
2712                        .border_t_1()
2713                        .border_color(self.tool_card_border_color(cx))
2714                        .child(
2715                            Label::new("Result")
2716                                .size(LabelSize::XSmall)
2717                                .color(Color::Muted)
2718                                .buffer_font(cx),
2719                        )
2720                        .child(div().w_full().text_ui_sm(cx).children(
2721                            rendered_tool_use.as_ref().map(|rendered| {
2722                                MarkdownElement::new(
2723                                    rendered.output.clone(),
2724                                    tool_use_markdown_style(window, cx),
2725                                )
2726                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2727                                    copy_button: false,
2728                                    border: false,
2729                                })
2730                                .on_url_click({
2731                                    let workspace = self.workspace.clone();
2732                                    move |text, window, cx| {
2733                                        open_markdown_link(text, workspace.clone(), window, cx);
2734                                    }
2735                                })
2736                                .into_any_element()
2737                            }),
2738                        )),
2739                ),
2740                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2741                    results_content_container()
2742                        .border_t_1()
2743                        .border_color(self.tool_card_border_color(cx))
2744                        .child(
2745                            h_flex()
2746                                .gap_1()
2747                                .child(
2748                                    Icon::new(IconName::ArrowCircle)
2749                                        .size(IconSize::Small)
2750                                        .color(Color::Accent)
2751                                        .with_animation(
2752                                            "arrow-circle",
2753                                            Animation::new(Duration::from_secs(2)).repeat(),
2754                                            |icon, delta| {
2755                                                icon.transform(Transformation::rotate(percentage(
2756                                                    delta,
2757                                                )))
2758                                            },
2759                                        ),
2760                                )
2761                                .child(
2762                                    Label::new("Running…")
2763                                        .size(LabelSize::XSmall)
2764                                        .color(Color::Muted)
2765                                        .buffer_font(cx),
2766                                ),
2767                        ),
2768                ),
2769                ToolUseStatus::Error(_) => container.child(
2770                    results_content_container()
2771                        .border_t_1()
2772                        .border_color(self.tool_card_border_color(cx))
2773                        .child(
2774                            Label::new("Error")
2775                                .size(LabelSize::XSmall)
2776                                .color(Color::Muted)
2777                                .buffer_font(cx),
2778                        )
2779                        .child(
2780                            div()
2781                                .text_ui_sm(cx)
2782                                .children(rendered_tool_use.as_ref().map(|rendered| {
2783                                    MarkdownElement::new(
2784                                        rendered.output.clone(),
2785                                        tool_use_markdown_style(window, cx),
2786                                    )
2787                                    .on_url_click({
2788                                        let workspace = self.workspace.clone();
2789                                        move |text, window, cx| {
2790                                            open_markdown_link(text, workspace.clone(), window, cx);
2791                                        }
2792                                    })
2793                                    .into_any_element()
2794                                })),
2795                        ),
2796                ),
2797                ToolUseStatus::Pending => container,
2798                ToolUseStatus::NeedsConfirmation => container.child(
2799                    results_content_container()
2800                        .border_t_1()
2801                        .border_color(self.tool_card_border_color(cx))
2802                        .child(
2803                            Label::new("Asking Permission")
2804                                .size(LabelSize::Small)
2805                                .color(Color::Muted)
2806                                .buffer_font(cx),
2807                        ),
2808                ),
2809            });
2810
2811        let gradient_overlay = |color: Hsla| {
2812            div()
2813                .h_full()
2814                .absolute()
2815                .w_12()
2816                .bottom_0()
2817                .map(|element| {
2818                    if is_status_finished {
2819                        element.right_6()
2820                    } else {
2821                        element.right(px(44.))
2822                    }
2823                })
2824                .bg(linear_gradient(
2825                    90.,
2826                    linear_color_stop(color, 1.),
2827                    linear_color_stop(color.opacity(0.2), 0.),
2828                ))
2829        };
2830
2831        v_flex().gap_1().mb_2().map(|element| {
2832            if !needs_confirmation_tools {
2833                element.child(
2834                    v_flex()
2835                        .child(
2836                            h_flex()
2837                                .group("disclosure-header")
2838                                .relative()
2839                                .gap_1p5()
2840                                .justify_between()
2841                                .opacity(0.8)
2842                                .hover(|style| style.opacity(1.))
2843                                .when(!is_status_finished, |this| this.pr_2())
2844                                .child(
2845                                    h_flex()
2846                                        .id("tool-label-container")
2847                                        .gap_1p5()
2848                                        .max_w_full()
2849                                        .overflow_x_scroll()
2850                                        .child(
2851                                            Icon::new(tool_use.icon)
2852                                                .size(IconSize::XSmall)
2853                                                .color(Color::Muted),
2854                                        )
2855                                        .child(
2856                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2857                                                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| {
2858                                                    open_markdown_link(text, workspace.clone(), window, cx);
2859                                                }}))
2860                                            ),
2861                                        ),
2862                                )
2863                                .child(
2864                                    h_flex()
2865                                        .gap_1()
2866                                        .child(
2867                                            div().visible_on_hover("disclosure-header").child(
2868                                                Disclosure::new("tool-use-disclosure", is_open)
2869                                                    .opened_icon(IconName::ChevronUp)
2870                                                    .closed_icon(IconName::ChevronDown)
2871                                                    .on_click(cx.listener({
2872                                                        let tool_use_id = tool_use.id.clone();
2873                                                        move |this, _event, _window, _cx| {
2874                                                            let is_open = this
2875                                                                .expanded_tool_uses
2876                                                                .entry(tool_use_id.clone())
2877                                                                .or_insert(false);
2878
2879                                                            *is_open = !*is_open;
2880                                                        }
2881                                                    })),
2882                                            ),
2883                                        )
2884                                        .child(status_icons),
2885                                )
2886                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2887                        )
2888                        .map(|parent| {
2889                            if !is_open {
2890                                return parent;
2891                            }
2892
2893                            parent.child(
2894                                v_flex()
2895                                    .mt_1()
2896                                    .border_1()
2897                                    .border_color(self.tool_card_border_color(cx))
2898                                    .bg(cx.theme().colors().editor_background)
2899                                    .rounded_lg()
2900                                    .child(results_content),
2901                            )
2902                        }),
2903                )
2904            } else {
2905                v_flex()
2906                    .mb_2()
2907                    .rounded_lg()
2908                    .border_1()
2909                    .border_color(self.tool_card_border_color(cx))
2910                    .overflow_hidden()
2911                    .child(
2912                        h_flex()
2913                            .group("disclosure-header")
2914                            .relative()
2915                            .justify_between()
2916                            .py_1()
2917                            .map(|element| {
2918                                if is_status_finished {
2919                                    element.pl_2().pr_0p5()
2920                                } else {
2921                                    element.px_2()
2922                                }
2923                            })
2924                            .bg(self.tool_card_header_bg(cx))
2925                            .map(|element| {
2926                                if is_open {
2927                                    element.border_b_1().rounded_t_md()
2928                                } else if needs_confirmation {
2929                                    element.rounded_t_md()
2930                                } else {
2931                                    element.rounded_md()
2932                                }
2933                            })
2934                            .border_color(self.tool_card_border_color(cx))
2935                            .child(
2936                                h_flex()
2937                                    .id("tool-label-container")
2938                                    .gap_1p5()
2939                                    .max_w_full()
2940                                    .overflow_x_scroll()
2941                                    .child(
2942                                        Icon::new(tool_use.icon)
2943                                            .size(IconSize::XSmall)
2944                                            .color(Color::Muted),
2945                                    )
2946                                    .child(
2947                                        h_flex().pr_8().text_ui_sm(cx).children(
2948                                            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| {
2949                                                open_markdown_link(text, workspace.clone(), window, cx);
2950                                            }}))
2951                                        ),
2952                                    ),
2953                            )
2954                            .child(
2955                                h_flex()
2956                                    .gap_1()
2957                                    .child(
2958                                        div().visible_on_hover("disclosure-header").child(
2959                                            Disclosure::new("tool-use-disclosure", is_open)
2960                                                .opened_icon(IconName::ChevronUp)
2961                                                .closed_icon(IconName::ChevronDown)
2962                                                .on_click(cx.listener({
2963                                                    let tool_use_id = tool_use.id.clone();
2964                                                    move |this, _event, _window, _cx| {
2965                                                        let is_open = this
2966                                                            .expanded_tool_uses
2967                                                            .entry(tool_use_id.clone())
2968                                                            .or_insert(false);
2969
2970                                                        *is_open = !*is_open;
2971                                                    }
2972                                                })),
2973                                        ),
2974                                    )
2975                                    .child(status_icons),
2976                            )
2977                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
2978                    )
2979                    .map(|parent| {
2980                        if !is_open {
2981                            return parent;
2982                        }
2983
2984                        parent.child(
2985                            v_flex()
2986                                .bg(cx.theme().colors().editor_background)
2987                                .map(|element| {
2988                                    if  needs_confirmation {
2989                                        element.rounded_none()
2990                                    } else {
2991                                        element.rounded_b_lg()
2992                                    }
2993                                })
2994                                .child(results_content),
2995                        )
2996                    })
2997                    .when(needs_confirmation, |this| {
2998                        this.child(
2999                            h_flex()
3000                                .py_1()
3001                                .pl_2()
3002                                .pr_1()
3003                                .gap_1()
3004                                .justify_between()
3005                                .bg(cx.theme().colors().editor_background)
3006                                .border_t_1()
3007                                .border_color(self.tool_card_border_color(cx))
3008                                .rounded_b_lg()
3009                                .child(
3010                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3011                                )
3012                                .child(
3013                                    h_flex()
3014                                        .gap_0p5()
3015                                        .child({
3016                                            let tool_id = tool_use.id.clone();
3017                                            Button::new(
3018                                                "always-allow-tool-action",
3019                                                "Always Allow",
3020                                            )
3021                                            .label_size(LabelSize::Small)
3022                                            .icon(IconName::CheckDouble)
3023                                            .icon_position(IconPosition::Start)
3024                                            .icon_size(IconSize::Small)
3025                                            .icon_color(Color::Success)
3026                                            .tooltip(move |window, cx|  {
3027                                                Tooltip::with_meta(
3028                                                    "Never ask for permission",
3029                                                    None,
3030                                                    "Restore the original behavior in your Agent Panel settings",
3031                                                    window,
3032                                                    cx,
3033                                                )
3034                                            })
3035                                            .on_click(cx.listener(
3036                                                move |this, event, window, cx| {
3037                                                    if let Some(fs) = fs.clone() {
3038                                                        update_settings_file::<AssistantSettings>(
3039                                                            fs.clone(),
3040                                                            cx,
3041                                                            |settings, _| {
3042                                                                settings.set_always_allow_tool_actions(true);
3043                                                            },
3044                                                        );
3045                                                    }
3046                                                    this.handle_allow_tool(
3047                                                        tool_id.clone(),
3048                                                        event,
3049                                                        window,
3050                                                        cx,
3051                                                    )
3052                                                },
3053                                            ))
3054                                        })
3055                                        .child(ui::Divider::vertical())
3056                                        .child({
3057                                            let tool_id = tool_use.id.clone();
3058                                            Button::new("allow-tool-action", "Allow")
3059                                                .label_size(LabelSize::Small)
3060                                                .icon(IconName::Check)
3061                                                .icon_position(IconPosition::Start)
3062                                                .icon_size(IconSize::Small)
3063                                                .icon_color(Color::Success)
3064                                                .on_click(cx.listener(
3065                                                    move |this, event, window, cx| {
3066                                                        this.handle_allow_tool(
3067                                                            tool_id.clone(),
3068                                                            event,
3069                                                            window,
3070                                                            cx,
3071                                                        )
3072                                                    },
3073                                                ))
3074                                        })
3075                                        .child({
3076                                            let tool_id = tool_use.id.clone();
3077                                            let tool_name: Arc<str> = tool_use.name.into();
3078                                            Button::new("deny-tool", "Deny")
3079                                                .label_size(LabelSize::Small)
3080                                                .icon(IconName::Close)
3081                                                .icon_position(IconPosition::Start)
3082                                                .icon_size(IconSize::Small)
3083                                                .icon_color(Color::Error)
3084                                                .on_click(cx.listener(
3085                                                    move |this, event, window, cx| {
3086                                                        this.handle_deny_tool(
3087                                                            tool_id.clone(),
3088                                                            tool_name.clone(),
3089                                                            event,
3090                                                            window,
3091                                                            cx,
3092                                                        )
3093                                                    },
3094                                                ))
3095                                        }),
3096                                ),
3097                        )
3098                    })
3099            }
3100        }).into_any_element()
3101    }
3102
3103    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3104        let project_context = self.thread.read(cx).project_context();
3105        let project_context = project_context.borrow();
3106        let Some(project_context) = project_context.as_ref() else {
3107            return div().into_any();
3108        };
3109
3110        let user_rules_text = if project_context.user_rules.is_empty() {
3111            None
3112        } else if project_context.user_rules.len() == 1 {
3113            let user_rules = &project_context.user_rules[0];
3114
3115            match user_rules.title.as_ref() {
3116                Some(title) => Some(format!("Using \"{title}\" user rule")),
3117                None => Some("Using user rule".into()),
3118            }
3119        } else {
3120            Some(format!(
3121                "Using {} user rules",
3122                project_context.user_rules.len()
3123            ))
3124        };
3125
3126        let first_user_rules_id = project_context
3127            .user_rules
3128            .first()
3129            .map(|user_rules| user_rules.uuid.0);
3130
3131        let rules_files = project_context
3132            .worktrees
3133            .iter()
3134            .filter_map(|worktree| worktree.rules_file.as_ref())
3135            .collect::<Vec<_>>();
3136
3137        let rules_file_text = match rules_files.as_slice() {
3138            &[] => None,
3139            &[rules_file] => Some(format!(
3140                "Using project {:?} file",
3141                rules_file.path_in_worktree
3142            )),
3143            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3144        };
3145
3146        if user_rules_text.is_none() && rules_file_text.is_none() {
3147            return div().into_any();
3148        }
3149
3150        v_flex()
3151            .pt_2()
3152            .px_2p5()
3153            .gap_1()
3154            .when_some(user_rules_text, |parent, user_rules_text| {
3155                parent.child(
3156                    h_flex()
3157                        .w_full()
3158                        .child(
3159                            Icon::new(RULES_ICON)
3160                                .size(IconSize::XSmall)
3161                                .color(Color::Disabled),
3162                        )
3163                        .child(
3164                            Label::new(user_rules_text)
3165                                .size(LabelSize::XSmall)
3166                                .color(Color::Muted)
3167                                .truncate()
3168                                .buffer_font(cx)
3169                                .ml_1p5()
3170                                .mr_0p5(),
3171                        )
3172                        .child(
3173                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3174                                .shape(ui::IconButtonShape::Square)
3175                                .icon_size(IconSize::XSmall)
3176                                .icon_color(Color::Ignored)
3177                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3178                                .tooltip(Tooltip::text("View User Rules"))
3179                                .on_click(move |_event, window, cx| {
3180                                    window.dispatch_action(
3181                                        Box::new(OpenRulesLibrary {
3182                                            prompt_to_select: first_user_rules_id,
3183                                        }),
3184                                        cx,
3185                                    )
3186                                }),
3187                        ),
3188                )
3189            })
3190            .when_some(rules_file_text, |parent, rules_file_text| {
3191                parent.child(
3192                    h_flex()
3193                        .w_full()
3194                        .child(
3195                            Icon::new(IconName::File)
3196                                .size(IconSize::XSmall)
3197                                .color(Color::Disabled),
3198                        )
3199                        .child(
3200                            Label::new(rules_file_text)
3201                                .size(LabelSize::XSmall)
3202                                .color(Color::Muted)
3203                                .buffer_font(cx)
3204                                .ml_1p5()
3205                                .mr_0p5(),
3206                        )
3207                        .child(
3208                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3209                                .shape(ui::IconButtonShape::Square)
3210                                .icon_size(IconSize::XSmall)
3211                                .icon_color(Color::Ignored)
3212                                .on_click(cx.listener(Self::handle_open_rules))
3213                                .tooltip(Tooltip::text("View Rules")),
3214                        ),
3215                )
3216            })
3217            .into_any()
3218    }
3219
3220    fn handle_allow_tool(
3221        &mut self,
3222        tool_use_id: LanguageModelToolUseId,
3223        _: &ClickEvent,
3224        window: &mut Window,
3225        cx: &mut Context<Self>,
3226    ) {
3227        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3228            .thread
3229            .read(cx)
3230            .pending_tool(&tool_use_id)
3231            .map(|tool_use| tool_use.status.clone())
3232        {
3233            self.thread.update(cx, |thread, cx| {
3234                thread.run_tool(
3235                    c.tool_use_id.clone(),
3236                    c.ui_text.clone(),
3237                    c.input.clone(),
3238                    &c.messages,
3239                    c.tool.clone(),
3240                    Some(window.window_handle()),
3241                    cx,
3242                );
3243            });
3244        }
3245    }
3246
3247    fn handle_deny_tool(
3248        &mut self,
3249        tool_use_id: LanguageModelToolUseId,
3250        tool_name: Arc<str>,
3251        _: &ClickEvent,
3252        window: &mut Window,
3253        cx: &mut Context<Self>,
3254    ) {
3255        let window_handle = window.window_handle();
3256        self.thread.update(cx, |thread, cx| {
3257            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3258        });
3259    }
3260
3261    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3262        let project_context = self.thread.read(cx).project_context();
3263        let project_context = project_context.borrow();
3264        let Some(project_context) = project_context.as_ref() else {
3265            return;
3266        };
3267
3268        let project_entry_ids = project_context
3269            .worktrees
3270            .iter()
3271            .flat_map(|worktree| worktree.rules_file.as_ref())
3272            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3273            .collect::<Vec<_>>();
3274
3275        self.workspace
3276            .update(cx, move |workspace, cx| {
3277                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3278                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3279                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3280                let project = workspace.project().read(cx);
3281                let project_paths = project_entry_ids
3282                    .into_iter()
3283                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3284                    .collect::<Vec<_>>();
3285                for project_path in project_paths {
3286                    workspace
3287                        .open_path(project_path, None, true, window, cx)
3288                        .detach_and_log_err(cx);
3289                }
3290            })
3291            .ok();
3292    }
3293
3294    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3295        for window in self.notifications.drain(..) {
3296            window
3297                .update(cx, |_, window, _| {
3298                    window.remove_window();
3299                })
3300                .ok();
3301
3302            self.notification_subscriptions.remove(&window);
3303        }
3304    }
3305
3306    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3307        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3308            return None;
3309        }
3310
3311        Some(
3312            div()
3313                .occlude()
3314                .id("active-thread-scrollbar")
3315                .on_mouse_move(cx.listener(|_, _, _, cx| {
3316                    cx.notify();
3317                    cx.stop_propagation()
3318                }))
3319                .on_hover(|_, _, cx| {
3320                    cx.stop_propagation();
3321                })
3322                .on_any_mouse_down(|_, _, cx| {
3323                    cx.stop_propagation();
3324                })
3325                .on_mouse_up(
3326                    MouseButton::Left,
3327                    cx.listener(|_, _, _, cx| {
3328                        cx.stop_propagation();
3329                    }),
3330                )
3331                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3332                    cx.notify();
3333                }))
3334                .h_full()
3335                .absolute()
3336                .right_1()
3337                .top_1()
3338                .bottom_0()
3339                .w(px(12.))
3340                .cursor_default()
3341                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3342        )
3343    }
3344
3345    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3346        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3347        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3348            cx.background_executor()
3349                .timer(SCROLLBAR_SHOW_INTERVAL)
3350                .await;
3351            thread
3352                .update(cx, |thread, cx| {
3353                    if !thread.scrollbar_state.is_dragging() {
3354                        thread.show_scrollbar = false;
3355                        cx.notify();
3356                    }
3357                })
3358                .log_err();
3359        }))
3360    }
3361}
3362
3363pub enum ActiveThreadEvent {
3364    EditingMessageTokenCountChanged,
3365}
3366
3367impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3368
3369impl Render for ActiveThread {
3370    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3371        v_flex()
3372            .size_full()
3373            .relative()
3374            .on_mouse_move(cx.listener(|this, _, _, cx| {
3375                this.show_scrollbar = true;
3376                this.hide_scrollbar_later(cx);
3377                cx.notify();
3378            }))
3379            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3380                this.show_scrollbar = true;
3381                this.hide_scrollbar_later(cx);
3382                cx.notify();
3383            }))
3384            .on_mouse_up(
3385                MouseButton::Left,
3386                cx.listener(|this, _, _, cx| {
3387                    this.hide_scrollbar_later(cx);
3388                }),
3389            )
3390            .child(list(self.list_state.clone()).flex_grow())
3391            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3392                this.child(scrollbar)
3393            })
3394    }
3395}
3396
3397pub(crate) fn open_context(
3398    context: &AgentContextHandle,
3399    workspace: Entity<Workspace>,
3400    window: &mut Window,
3401    cx: &mut App,
3402) {
3403    match context {
3404        AgentContextHandle::File(file_context) => {
3405            if let Some(project_path) = file_context.project_path(cx) {
3406                workspace.update(cx, |workspace, cx| {
3407                    workspace
3408                        .open_path(project_path, None, true, window, cx)
3409                        .detach_and_log_err(cx);
3410                });
3411            }
3412        }
3413
3414        AgentContextHandle::Directory(directory_context) => {
3415            let entry_id = directory_context.entry_id;
3416            workspace.update(cx, |workspace, cx| {
3417                workspace.project().update(cx, |_project, cx| {
3418                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3419                })
3420            })
3421        }
3422
3423        AgentContextHandle::Symbol(symbol_context) => {
3424            let buffer = symbol_context.buffer.read(cx);
3425            if let Some(project_path) = buffer.project_path(cx) {
3426                let snapshot = buffer.snapshot();
3427                let target_position = symbol_context.range.start.to_point(&snapshot);
3428                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3429                    .detach();
3430            }
3431        }
3432
3433        AgentContextHandle::Selection(selection_context) => {
3434            let buffer = selection_context.buffer.read(cx);
3435            if let Some(project_path) = buffer.project_path(cx) {
3436                let snapshot = buffer.snapshot();
3437                let target_position = selection_context.range.start.to_point(&snapshot);
3438
3439                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3440                    .detach();
3441            }
3442        }
3443
3444        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3445            cx.open_url(&fetched_url_context.url);
3446        }
3447
3448        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3449            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3450                panel.update(cx, |panel, cx| {
3451                    let thread_id = thread_context.thread.read(cx).id().clone();
3452                    panel
3453                        .open_thread_by_id(&thread_id, window, cx)
3454                        .detach_and_log_err(cx)
3455                });
3456            }
3457        }),
3458
3459        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3460            Box::new(OpenRulesLibrary {
3461                prompt_to_select: Some(rules_context.prompt_id.0),
3462            }),
3463            cx,
3464        ),
3465
3466        AgentContextHandle::Image(_) => {}
3467    }
3468}
3469
3470fn open_editor_at_position(
3471    project_path: project::ProjectPath,
3472    target_position: Point,
3473    workspace: &Entity<Workspace>,
3474    window: &mut Window,
3475    cx: &mut App,
3476) -> Task<()> {
3477    let open_task = workspace.update(cx, |workspace, cx| {
3478        workspace.open_path(project_path, None, true, window, cx)
3479    });
3480    window.spawn(cx, async move |cx| {
3481        if let Some(active_editor) = open_task
3482            .await
3483            .log_err()
3484            .and_then(|item| item.downcast::<Editor>())
3485        {
3486            active_editor
3487                .downgrade()
3488                .update_in(cx, |editor, window, cx| {
3489                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3490                })
3491                .log_err();
3492        }
3493    })
3494}