active_thread.rs

   1use crate::context::{AgentContextHandle, RULES_ICON};
   2use crate::context_picker::{ContextPicker, MentionLink};
   3use crate::context_store::ContextStore;
   4use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
   5use crate::thread::{
   6    LastRestoreCheckpoint, MessageId, MessageSegment, Thread, ThreadError, ThreadEvent,
   7    ThreadFeedback,
   8};
   9use crate::thread_store::{RulesLoadingError, ThreadStore};
  10use crate::tool_use::{PendingToolUseStatus, ToolUse};
  11use crate::ui::{
  12    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
  13};
  14use crate::{AssistantPanel, OpenActiveThreadAsMarkdown};
  15use anyhow::Context as _;
  16use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
  17use assistant_tool::ToolUseStatus;
  18use collections::{HashMap, HashSet};
  19use editor::actions::{MoveUp, Paste};
  20use editor::scroll::Autoscroll;
  21use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer};
  22use gpui::{
  23    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardEntry,
  24    ClipboardItem, DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla,
  25    ListAlignment, ListState, MouseButton, PlatformDisplay, ScrollHandle, Stateful,
  26    StyleRefinement, Subscription, Task, TextStyle, TextStyleRefinement, Transformation,
  27    UnderlineStyle, WeakEntity, WindowHandle, linear_color_stop, linear_gradient, list, percentage,
  28    pulsating_between,
  29};
  30use language::{Buffer, Language, LanguageRegistry};
  31use language_model::{
  32    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, RequestUsage, Role,
  33    StopReason,
  34};
  35use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  36use markdown::{HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
  37use project::{ProjectEntryId, ProjectItem as _};
  38use rope::Point;
  39use settings::{Settings as _, update_settings_file};
  40use std::ffi::OsStr;
  41use std::path::Path;
  42use std::rc::Rc;
  43use std::sync::Arc;
  44use std::time::Duration;
  45use text::ToPoint;
  46use theme::ThemeSettings;
  47use ui::{
  48    Disclosure, IconButton, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize,
  49    Tooltip, prelude::*,
  50};
  51use util::ResultExt as _;
  52use util::markdown::MarkdownCodeBlock;
  53use workspace::Workspace;
  54use zed_actions::assistant::OpenRulesLibrary;
  55
  56pub struct ActiveThread {
  57    context_store: Entity<ContextStore>,
  58    language_registry: Arc<LanguageRegistry>,
  59    thread_store: Entity<ThreadStore>,
  60    thread: Entity<Thread>,
  61    workspace: WeakEntity<Workspace>,
  62    save_thread_task: Option<Task<()>>,
  63    messages: Vec<MessageId>,
  64    list_state: ListState,
  65    scrollbar_state: ScrollbarState,
  66    show_scrollbar: bool,
  67    hide_scrollbar_task: Option<Task<()>>,
  68    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  69    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  70    editing_message: Option<(MessageId, EditingMessageState)>,
  71    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  72    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  73    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  74    last_error: Option<ThreadError>,
  75    last_usage: Option<RequestUsage>,
  76    notifications: Vec<WindowHandle<AgentNotification>>,
  77    copied_code_block_ids: HashSet<(MessageId, usize)>,
  78    _subscriptions: Vec<Subscription>,
  79    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  80    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  81    _load_edited_message_context_task: Option<Task<()>>,
  82}
  83
  84struct RenderedMessage {
  85    language_registry: Arc<LanguageRegistry>,
  86    segments: Vec<RenderedMessageSegment>,
  87}
  88
  89#[derive(Clone)]
  90struct RenderedToolUse {
  91    label: Entity<Markdown>,
  92    input: Entity<Markdown>,
  93    output: Entity<Markdown>,
  94}
  95
  96impl RenderedMessage {
  97    fn from_segments(
  98        segments: &[MessageSegment],
  99        language_registry: Arc<LanguageRegistry>,
 100        cx: &mut App,
 101    ) -> Self {
 102        let mut this = Self {
 103            language_registry,
 104            segments: Vec::with_capacity(segments.len()),
 105        };
 106        for segment in segments {
 107            this.push_segment(segment, cx);
 108        }
 109        this
 110    }
 111
 112    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 113        if let Some(RenderedMessageSegment::Thinking {
 114            content,
 115            scroll_handle,
 116        }) = self.segments.last_mut()
 117        {
 118            content.update(cx, |markdown, cx| {
 119                markdown.append(text, cx);
 120            });
 121            scroll_handle.scroll_to_bottom();
 122        } else {
 123            self.segments.push(RenderedMessageSegment::Thinking {
 124                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 125                scroll_handle: ScrollHandle::default(),
 126            });
 127        }
 128    }
 129
 130    fn append_text(&mut self, text: &String, cx: &mut App) {
 131        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 132            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 133        } else {
 134            self.segments
 135                .push(RenderedMessageSegment::Text(parse_markdown(
 136                    SharedString::from(text),
 137                    self.language_registry.clone(),
 138                    cx,
 139                )));
 140        }
 141    }
 142
 143    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 144        match segment {
 145            MessageSegment::Thinking { text, .. } => {
 146                self.segments.push(RenderedMessageSegment::Thinking {
 147                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 148                    scroll_handle: ScrollHandle::default(),
 149                })
 150            }
 151            MessageSegment::Text(text) => {
 152                self.segments
 153                    .push(RenderedMessageSegment::Text(parse_markdown(
 154                        text.into(),
 155                        self.language_registry.clone(),
 156                        cx,
 157                    )))
 158            }
 159            MessageSegment::RedactedThinking(_) => {}
 160        };
 161    }
 162}
 163
 164enum RenderedMessageSegment {
 165    Thinking {
 166        content: Entity<Markdown>,
 167        scroll_handle: ScrollHandle,
 168    },
 169    Text(Entity<Markdown>),
 170}
 171
 172fn parse_markdown(
 173    text: SharedString,
 174    language_registry: Arc<LanguageRegistry>,
 175    cx: &mut App,
 176) -> Entity<Markdown> {
 177    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 178}
 179
 180fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 181    let theme_settings = ThemeSettings::get_global(cx);
 182    let colors = cx.theme().colors();
 183    let ui_font_size = TextSize::Default.rems(cx);
 184    let buffer_font_size = TextSize::Small.rems(cx);
 185    let mut text_style = window.text_style();
 186
 187    text_style.refine(&TextStyleRefinement {
 188        font_family: Some(theme_settings.ui_font.family.clone()),
 189        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 190        font_features: Some(theme_settings.ui_font.features.clone()),
 191        font_size: Some(ui_font_size.into()),
 192        color: Some(cx.theme().colors().text),
 193        ..Default::default()
 194    });
 195
 196    MarkdownStyle {
 197        base_text_style: text_style.clone(),
 198        syntax: cx.theme().syntax().clone(),
 199        selection_background_color: cx.theme().players().local().selection,
 200        code_block_overflow_x_scroll: true,
 201        table_overflow_x_scroll: true,
 202        heading_level_styles: Some(HeadingLevelStyles {
 203            h1: Some(TextStyleRefinement {
 204                font_size: Some(rems(1.15).into()),
 205                ..Default::default()
 206            }),
 207            h2: Some(TextStyleRefinement {
 208                font_size: Some(rems(1.1).into()),
 209                ..Default::default()
 210            }),
 211            h3: Some(TextStyleRefinement {
 212                font_size: Some(rems(1.05).into()),
 213                ..Default::default()
 214            }),
 215            h4: Some(TextStyleRefinement {
 216                font_size: Some(rems(1.).into()),
 217                ..Default::default()
 218            }),
 219            h5: Some(TextStyleRefinement {
 220                font_size: Some(rems(0.95).into()),
 221                ..Default::default()
 222            }),
 223            h6: Some(TextStyleRefinement {
 224                font_size: Some(rems(0.875).into()),
 225                ..Default::default()
 226            }),
 227        }),
 228        code_block: StyleRefinement {
 229            padding: EdgesRefinement {
 230                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 231                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 232                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 233                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 234            },
 235            background: Some(colors.editor_background.into()),
 236            text: Some(TextStyleRefinement {
 237                font_family: Some(theme_settings.buffer_font.family.clone()),
 238                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 239                font_features: Some(theme_settings.buffer_font.features.clone()),
 240                font_size: Some(buffer_font_size.into()),
 241                ..Default::default()
 242            }),
 243            ..Default::default()
 244        },
 245        inline_code: TextStyleRefinement {
 246            font_family: Some(theme_settings.buffer_font.family.clone()),
 247            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 248            font_features: Some(theme_settings.buffer_font.features.clone()),
 249            font_size: Some(buffer_font_size.into()),
 250            background_color: Some(colors.editor_foreground.opacity(0.08)),
 251            ..Default::default()
 252        },
 253        link: TextStyleRefinement {
 254            background_color: Some(colors.editor_foreground.opacity(0.025)),
 255            underline: Some(UnderlineStyle {
 256                color: Some(colors.text_accent.opacity(0.5)),
 257                thickness: px(1.),
 258                ..Default::default()
 259            }),
 260            ..Default::default()
 261        },
 262        link_callback: Some(Rc::new(move |url, cx| {
 263            if MentionLink::is_valid(url) {
 264                let colors = cx.theme().colors();
 265                Some(TextStyleRefinement {
 266                    background_color: Some(colors.element_background),
 267                    ..Default::default()
 268                })
 269            } else {
 270                None
 271            }
 272        })),
 273        ..Default::default()
 274    }
 275}
 276
 277fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 278    let theme_settings = ThemeSettings::get_global(cx);
 279    let colors = cx.theme().colors();
 280    let ui_font_size = TextSize::Default.rems(cx);
 281    let buffer_font_size = TextSize::Small.rems(cx);
 282    let mut text_style = window.text_style();
 283
 284    text_style.refine(&TextStyleRefinement {
 285        font_family: Some(theme_settings.ui_font.family.clone()),
 286        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 287        font_features: Some(theme_settings.ui_font.features.clone()),
 288        font_size: Some(ui_font_size.into()),
 289        color: Some(cx.theme().colors().text),
 290        ..Default::default()
 291    });
 292
 293    MarkdownStyle {
 294        base_text_style: text_style,
 295        syntax: cx.theme().syntax().clone(),
 296        selection_background_color: cx.theme().players().local().selection,
 297        code_block_overflow_x_scroll: true,
 298        code_block: StyleRefinement {
 299            margin: EdgesRefinement::default(),
 300            padding: EdgesRefinement::default(),
 301            background: Some(colors.editor_background.into()),
 302            border_color: None,
 303            border_widths: EdgesRefinement::default(),
 304            text: Some(TextStyleRefinement {
 305                font_family: Some(theme_settings.buffer_font.family.clone()),
 306                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 307                font_features: Some(theme_settings.buffer_font.features.clone()),
 308                font_size: Some(buffer_font_size.into()),
 309                ..Default::default()
 310            }),
 311            ..Default::default()
 312        },
 313        inline_code: TextStyleRefinement {
 314            font_family: Some(theme_settings.buffer_font.family.clone()),
 315            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 316            font_features: Some(theme_settings.buffer_font.features.clone()),
 317            font_size: Some(TextSize::XSmall.rems(cx).into()),
 318            ..Default::default()
 319        },
 320        heading: StyleRefinement {
 321            text: Some(TextStyleRefinement {
 322                font_size: Some(ui_font_size.into()),
 323                ..Default::default()
 324            }),
 325            ..Default::default()
 326        },
 327        ..Default::default()
 328    }
 329}
 330
 331const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 10;
 332
 333fn render_markdown_code_block(
 334    message_id: MessageId,
 335    ix: usize,
 336    kind: &CodeBlockKind,
 337    parsed_markdown: &ParsedMarkdown,
 338    metadata: CodeBlockMetadata,
 339    active_thread: Entity<ActiveThread>,
 340    workspace: WeakEntity<Workspace>,
 341    _window: &Window,
 342    cx: &App,
 343) -> Div {
 344    let label = match kind {
 345        CodeBlockKind::Indented => None,
 346        CodeBlockKind::Fenced => Some(
 347            h_flex()
 348                .gap_1()
 349                .child(
 350                    Icon::new(IconName::Code)
 351                        .color(Color::Muted)
 352                        .size(IconSize::XSmall),
 353                )
 354                .child(Label::new("untitled").size(LabelSize::Small))
 355                .into_any_element(),
 356        ),
 357        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 358            parsed_markdown.languages_by_name.get(raw_language_name),
 359            raw_language_name.clone(),
 360            cx,
 361        )),
 362        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 363            // We tell the model to use /dev/null for the path instead of using ```language
 364            // because otherwise it consistently fails to use code citations.
 365            if path_range.path.starts_with("/dev/null") {
 366                let ext = path_range
 367                    .path
 368                    .extension()
 369                    .and_then(OsStr::to_str)
 370                    .map(|str| SharedString::new(str.to_string()))
 371                    .unwrap_or_default();
 372
 373                render_code_language(
 374                    parsed_markdown
 375                        .languages_by_path
 376                        .get(&path_range.path)
 377                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 378                    ext,
 379                    cx,
 380                )
 381            } else {
 382                let content = if let Some(parent) = path_range.path.parent() {
 383                    h_flex()
 384                        .ml_1()
 385                        .gap_1()
 386                        .child(
 387                            Label::new(file_name.to_string_lossy().to_string())
 388                                .size(LabelSize::Small),
 389                        )
 390                        .child(
 391                            Label::new(parent.to_string_lossy().to_string())
 392                                .color(Color::Muted)
 393                                .size(LabelSize::Small),
 394                        )
 395                        .into_any_element()
 396                } else {
 397                    Label::new(path_range.path.to_string_lossy().to_string())
 398                        .size(LabelSize::Small)
 399                        .ml_1()
 400                        .into_any_element()
 401                };
 402
 403                h_flex()
 404                    .id(("code-block-header-label", ix))
 405                    .w_full()
 406                    .max_w_full()
 407                    .px_1()
 408                    .gap_0p5()
 409                    .cursor_pointer()
 410                    .rounded_sm()
 411                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 412                    .tooltip(Tooltip::text("Jump to File"))
 413                    .child(
 414                        h_flex()
 415                            .gap_0p5()
 416                            .children(
 417                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 418                                    .map(Icon::from_path)
 419                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 420                            )
 421                            .child(content)
 422                            .child(
 423                                Icon::new(IconName::ArrowUpRight)
 424                                    .size(IconSize::XSmall)
 425                                    .color(Color::Ignored),
 426                            ),
 427                    )
 428                    .on_click({
 429                        let path_range = path_range.clone();
 430                        move |_, window, cx| {
 431                            workspace
 432                                .update(cx, {
 433                                    |workspace, cx| {
 434                                        let Some(project_path) = workspace
 435                                            .project()
 436                                            .read(cx)
 437                                            .find_project_path(&path_range.path, cx)
 438                                        else {
 439                                            return;
 440                                        };
 441                                        let Some(target) = path_range.range.as_ref().map(|range| {
 442                                            Point::new(
 443                                                // Line number is 1-based
 444                                                range.start.line.saturating_sub(1),
 445                                                range.start.col.unwrap_or(0),
 446                                            )
 447                                        }) else {
 448                                            return;
 449                                        };
 450                                        let open_task = workspace.open_path(
 451                                            project_path,
 452                                            None,
 453                                            true,
 454                                            window,
 455                                            cx,
 456                                        );
 457                                        window
 458                                            .spawn(cx, async move |cx| {
 459                                                let item = open_task.await?;
 460                                                if let Some(active_editor) =
 461                                                    item.downcast::<Editor>()
 462                                                {
 463                                                    active_editor
 464                                                        .update_in(cx, |editor, window, cx| {
 465                                                            editor.go_to_singleton_buffer_point(
 466                                                                target, window, cx,
 467                                                            );
 468                                                        })
 469                                                        .ok();
 470                                                }
 471                                                anyhow::Ok(())
 472                                            })
 473                                            .detach_and_log_err(cx);
 474                                    }
 475                                })
 476                                .ok();
 477                        }
 478                    })
 479                    .into_any_element()
 480            }
 481        }),
 482    };
 483
 484    let codeblock_was_copied = active_thread
 485        .read(cx)
 486        .copied_code_block_ids
 487        .contains(&(message_id, ix));
 488
 489    let is_expanded = active_thread
 490        .read(cx)
 491        .expanded_code_blocks
 492        .get(&(message_id, ix))
 493        .copied()
 494        .unwrap_or(true);
 495
 496    let codeblock_header_bg = cx
 497        .theme()
 498        .colors()
 499        .element_background
 500        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 501
 502    let codeblock_header = h_flex()
 503        .py_1()
 504        .pl_1p5()
 505        .pr_1()
 506        .gap_1()
 507        .justify_between()
 508        .border_b_1()
 509        .border_color(cx.theme().colors().border.opacity(0.6))
 510        .bg(codeblock_header_bg)
 511        .rounded_t_md()
 512        .children(label)
 513        .child(
 514            h_flex()
 515                .visible_on_hover("codeblock_container")
 516                .gap_1()
 517                .child(
 518                    IconButton::new(
 519                        ("copy-markdown-code", ix),
 520                        if codeblock_was_copied {
 521                            IconName::Check
 522                        } else {
 523                            IconName::Copy
 524                        },
 525                    )
 526                    .icon_color(Color::Muted)
 527                    .shape(ui::IconButtonShape::Square)
 528                    .tooltip(Tooltip::text("Copy Code"))
 529                    .on_click({
 530                        let active_thread = active_thread.clone();
 531                        let parsed_markdown = parsed_markdown.clone();
 532                        let code_block_range = metadata.content_range.clone();
 533                        move |_event, _window, cx| {
 534                            active_thread.update(cx, |this, cx| {
 535                                this.copied_code_block_ids.insert((message_id, ix));
 536
 537                                let code =
 538                                    parsed_markdown.source()[code_block_range.clone()].to_string();
 539                                cx.write_to_clipboard(ClipboardItem::new_string(code));
 540
 541                                cx.spawn(async move |this, cx| {
 542                                    cx.background_executor().timer(Duration::from_secs(2)).await;
 543
 544                                    cx.update(|cx| {
 545                                        this.update(cx, |this, cx| {
 546                                            this.copied_code_block_ids.remove(&(message_id, ix));
 547                                            cx.notify();
 548                                        })
 549                                    })
 550                                    .ok();
 551                                })
 552                                .detach();
 553                            });
 554                        }
 555                    }),
 556                )
 557                .when(
 558                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 559                    |header| {
 560                        header.child(
 561                            IconButton::new(
 562                                ("expand-collapse-code", ix),
 563                                if is_expanded {
 564                                    IconName::ChevronUp
 565                                } else {
 566                                    IconName::ChevronDown
 567                                },
 568                            )
 569                            .icon_color(Color::Muted)
 570                            .shape(ui::IconButtonShape::Square)
 571                            .tooltip(Tooltip::text(if is_expanded {
 572                                "Collapse Code"
 573                            } else {
 574                                "Expand Code"
 575                            }))
 576                            .on_click({
 577                                let active_thread = active_thread.clone();
 578                                move |_event, _window, cx| {
 579                                    active_thread.update(cx, |this, cx| {
 580                                        let is_expanded = this
 581                                            .expanded_code_blocks
 582                                            .entry((message_id, ix))
 583                                            .or_insert(true);
 584                                        *is_expanded = !*is_expanded;
 585                                        cx.notify();
 586                                    });
 587                                }
 588                            }),
 589                        )
 590                    },
 591                ),
 592        );
 593
 594    v_flex()
 595        .group("codeblock_container")
 596        .my_2()
 597        .overflow_hidden()
 598        .rounded_lg()
 599        .border_1()
 600        .border_color(cx.theme().colors().border.opacity(0.6))
 601        .bg(cx.theme().colors().editor_background)
 602        .child(codeblock_header)
 603        .when(
 604            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 605            |this| {
 606                if is_expanded {
 607                    this.h_full()
 608                } else {
 609                    this.max_h_80()
 610                }
 611            },
 612        )
 613}
 614
 615fn render_code_language(
 616    language: Option<&Arc<Language>>,
 617    name_fallback: SharedString,
 618    cx: &App,
 619) -> AnyElement {
 620    let icon_path = language.and_then(|language| {
 621        language
 622            .config()
 623            .matcher
 624            .path_suffixes
 625            .iter()
 626            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 627            .map(Icon::from_path)
 628    });
 629
 630    let language_label = language
 631        .map(|language| language.name().into())
 632        .unwrap_or(name_fallback);
 633
 634    h_flex()
 635        .gap_1()
 636        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::Small)))
 637        .child(Label::new(language_label).size(LabelSize::Small))
 638        .into_any_element()
 639}
 640
 641fn open_markdown_link(
 642    text: SharedString,
 643    workspace: WeakEntity<Workspace>,
 644    window: &mut Window,
 645    cx: &mut App,
 646) {
 647    let Some(workspace) = workspace.upgrade() else {
 648        cx.open_url(&text);
 649        return;
 650    };
 651
 652    match MentionLink::try_parse(&text, &workspace, cx) {
 653        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 654            if entry.is_dir() {
 655                workspace.project().update(cx, |_, cx| {
 656                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 657                })
 658            } else {
 659                workspace
 660                    .open_path(path, None, true, window, cx)
 661                    .detach_and_log_err(cx);
 662            }
 663        }),
 664        Some(MentionLink::Symbol(path, symbol_name)) => {
 665            let open_task = workspace.update(cx, |workspace, cx| {
 666                workspace.open_path(path, None, true, window, cx)
 667            });
 668            window
 669                .spawn(cx, async move |cx| {
 670                    let active_editor = open_task
 671                        .await?
 672                        .downcast::<Editor>()
 673                        .context("Item is not an editor")?;
 674                    active_editor.update_in(cx, |editor, window, cx| {
 675                        let symbol_range = editor
 676                            .buffer()
 677                            .read(cx)
 678                            .snapshot(cx)
 679                            .outline(None)
 680                            .and_then(|outline| {
 681                                outline
 682                                    .find_most_similar(&symbol_name)
 683                                    .map(|(_, item)| item.range.clone())
 684                            })
 685                            .context("Could not find matching symbol")?;
 686
 687                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 688                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 689                        });
 690                        anyhow::Ok(())
 691                    })
 692                })
 693                .detach_and_log_err(cx);
 694        }
 695        Some(MentionLink::Selection(path, line_range)) => {
 696            let open_task = workspace.update(cx, |workspace, cx| {
 697                workspace.open_path(path, None, true, window, cx)
 698            });
 699            window
 700                .spawn(cx, async move |cx| {
 701                    let active_editor = open_task
 702                        .await?
 703                        .downcast::<Editor>()
 704                        .context("Item is not an editor")?;
 705                    active_editor.update_in(cx, |editor, window, cx| {
 706                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 707                            s.select_ranges([Point::new(line_range.start as u32, 0)
 708                                ..Point::new(line_range.start as u32, 0)])
 709                        });
 710                        anyhow::Ok(())
 711                    })
 712                })
 713                .detach_and_log_err(cx);
 714        }
 715        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 716            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 717                panel.update(cx, |panel, cx| {
 718                    panel
 719                        .open_thread_by_id(&thread_id, window, cx)
 720                        .detach_and_log_err(cx)
 721                });
 722            }
 723        }),
 724        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 725        Some(MentionLink::Rules(prompt_id)) => window.dispatch_action(
 726            Box::new(OpenRulesLibrary {
 727                prompt_to_select: Some(prompt_id.0),
 728            }),
 729            cx,
 730        ),
 731        None => cx.open_url(&text),
 732    }
 733}
 734
 735struct EditingMessageState {
 736    editor: Entity<Editor>,
 737    context_strip: Entity<ContextStrip>,
 738    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 739    last_estimated_token_count: Option<usize>,
 740    _subscriptions: [Subscription; 2],
 741    _update_token_count_task: Option<Task<()>>,
 742}
 743
 744impl ActiveThread {
 745    pub fn new(
 746        thread: Entity<Thread>,
 747        thread_store: Entity<ThreadStore>,
 748        context_store: Entity<ContextStore>,
 749        language_registry: Arc<LanguageRegistry>,
 750        workspace: WeakEntity<Workspace>,
 751        window: &mut Window,
 752        cx: &mut Context<Self>,
 753    ) -> Self {
 754        let subscriptions = vec![
 755            cx.observe(&thread, |_, _, cx| cx.notify()),
 756            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 757            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 758        ];
 759
 760        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 761            let this = cx.entity().downgrade();
 762            move |ix, window: &mut Window, cx: &mut App| {
 763                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 764                    .unwrap()
 765            }
 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::StreamedCompletion
 957            | ThreadEvent::SummaryGenerated
 958            | ThreadEvent::SummaryChanged => {
 959                self.save_thread(cx);
 960            }
 961            ThreadEvent::Stopped(reason) => match reason {
 962                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 963                    let thread = self.thread.read(cx);
 964                    self.show_notification(
 965                        if thread.used_tools_since_last_user_message() {
 966                            "Finished running tools"
 967                        } else {
 968                            "New message"
 969                        },
 970                        IconName::ZedAssistant,
 971                        window,
 972                        cx,
 973                    );
 974                }
 975                _ => {}
 976            },
 977            ThreadEvent::ToolConfirmationNeeded => {
 978                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 979            }
 980            ThreadEvent::StreamedAssistantText(message_id, text) => {
 981                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 982                    rendered_message.append_text(text, cx);
 983                }
 984            }
 985            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
 986                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 987                    rendered_message.append_thinking(text, cx);
 988                }
 989            }
 990            ThreadEvent::MessageAdded(message_id) => {
 991                if let Some(message_segments) = self
 992                    .thread
 993                    .read(cx)
 994                    .message(*message_id)
 995                    .map(|message| message.segments.clone())
 996                {
 997                    self.push_message(message_id, &message_segments, window, cx);
 998                }
 999
1000                self.save_thread(cx);
1001                cx.notify();
1002            }
1003            ThreadEvent::MessageEdited(message_id) => {
1004                if let Some(message_segments) = self
1005                    .thread
1006                    .read(cx)
1007                    .message(*message_id)
1008                    .map(|message| message.segments.clone())
1009                {
1010                    self.edited_message(message_id, &message_segments, window, cx);
1011                }
1012
1013                self.save_thread(cx);
1014                cx.notify();
1015            }
1016            ThreadEvent::MessageDeleted(message_id) => {
1017                self.deleted_message(message_id);
1018                self.save_thread(cx);
1019                cx.notify();
1020            }
1021            ThreadEvent::UsePendingTools { tool_uses } => {
1022                for tool_use in tool_uses {
1023                    self.render_tool_use_markdown(
1024                        tool_use.id.clone(),
1025                        tool_use.ui_text.clone(),
1026                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1027                        "".into(),
1028                        cx,
1029                    );
1030                }
1031            }
1032            ThreadEvent::StreamedToolUse {
1033                tool_use_id,
1034                ui_text,
1035                input,
1036            } => {
1037                self.render_tool_use_markdown(
1038                    tool_use_id.clone(),
1039                    ui_text.clone(),
1040                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1041                    "".into(),
1042                    cx,
1043                );
1044            }
1045            ThreadEvent::ToolFinished {
1046                pending_tool_use, ..
1047            } => {
1048                if let Some(tool_use) = pending_tool_use {
1049                    self.render_tool_use_markdown(
1050                        tool_use.id.clone(),
1051                        tool_use.ui_text.clone(),
1052                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1053                        self.thread
1054                            .read(cx)
1055                            .output_for_tool(&tool_use.id)
1056                            .map(|output| output.clone().into())
1057                            .unwrap_or("".into()),
1058                        cx,
1059                    );
1060                }
1061            }
1062            ThreadEvent::CheckpointChanged => cx.notify(),
1063            ThreadEvent::ReceivedTextChunk => {}
1064            ThreadEvent::InvalidToolInput {
1065                tool_use_id,
1066                ui_text,
1067                invalid_input_json,
1068            } => {
1069                self.render_tool_use_markdown(
1070                    tool_use_id.clone(),
1071                    ui_text,
1072                    invalid_input_json,
1073                    self.thread
1074                        .read(cx)
1075                        .output_for_tool(tool_use_id)
1076                        .map(|output| output.clone().into())
1077                        .unwrap_or("".into()),
1078                    cx,
1079                );
1080            }
1081        }
1082    }
1083
1084    fn handle_rules_loading_error(
1085        &mut self,
1086        _thread_store: Entity<ThreadStore>,
1087        error: &RulesLoadingError,
1088        cx: &mut Context<Self>,
1089    ) {
1090        self.last_error = Some(ThreadError::Message {
1091            header: "Error loading rules file".into(),
1092            message: error.message.clone(),
1093        });
1094        cx.notify();
1095    }
1096
1097    fn show_notification(
1098        &mut self,
1099        caption: impl Into<SharedString>,
1100        icon: IconName,
1101        window: &mut Window,
1102        cx: &mut Context<ActiveThread>,
1103    ) {
1104        if window.is_window_active() || !self.notifications.is_empty() {
1105            return;
1106        }
1107
1108        let title = self
1109            .thread
1110            .read(cx)
1111            .summary()
1112            .unwrap_or("Agent Panel".into());
1113
1114        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1115            NotifyWhenAgentWaiting::PrimaryScreen => {
1116                if let Some(primary) = cx.primary_display() {
1117                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1118                }
1119            }
1120            NotifyWhenAgentWaiting::AllScreens => {
1121                let caption = caption.into();
1122                for screen in cx.displays() {
1123                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1124                }
1125            }
1126            NotifyWhenAgentWaiting::Never => {
1127                // Don't show anything
1128            }
1129        }
1130    }
1131
1132    fn pop_up(
1133        &mut self,
1134        icon: IconName,
1135        caption: SharedString,
1136        title: SharedString,
1137        window: &mut Window,
1138        screen: Rc<dyn PlatformDisplay>,
1139        cx: &mut Context<'_, ActiveThread>,
1140    ) {
1141        let options = AgentNotification::window_options(screen, cx);
1142
1143        let project_name = self.workspace.upgrade().and_then(|workspace| {
1144            workspace
1145                .read(cx)
1146                .project()
1147                .read(cx)
1148                .visible_worktrees(cx)
1149                .next()
1150                .map(|worktree| worktree.read(cx).root_name().to_string())
1151        });
1152
1153        if let Some(screen_window) = cx
1154            .open_window(options, |_, cx| {
1155                cx.new(|_| {
1156                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1157                })
1158            })
1159            .log_err()
1160        {
1161            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1162                self.notification_subscriptions
1163                    .entry(screen_window)
1164                    .or_insert_with(Vec::new)
1165                    .push(cx.subscribe_in(&pop_up, window, {
1166                        |this, _, event, window, cx| match event {
1167                            AgentNotificationEvent::Accepted => {
1168                                let handle = window.window_handle();
1169                                cx.activate(true);
1170
1171                                let workspace_handle = this.workspace.clone();
1172
1173                                // If there are multiple Zed windows, activate the correct one.
1174                                cx.defer(move |cx| {
1175                                    handle
1176                                        .update(cx, |_view, window, _cx| {
1177                                            window.activate_window();
1178
1179                                            if let Some(workspace) = workspace_handle.upgrade() {
1180                                                workspace.update(_cx, |workspace, cx| {
1181                                                    workspace
1182                                                        .focus_panel::<AssistantPanel>(window, cx);
1183                                                });
1184                                            }
1185                                        })
1186                                        .log_err();
1187                                });
1188
1189                                this.dismiss_notifications(cx);
1190                            }
1191                            AgentNotificationEvent::Dismissed => {
1192                                this.dismiss_notifications(cx);
1193                            }
1194                        }
1195                    }));
1196
1197                self.notifications.push(screen_window);
1198
1199                // If the user manually refocuses the original window, dismiss the popup.
1200                self.notification_subscriptions
1201                    .entry(screen_window)
1202                    .or_insert_with(Vec::new)
1203                    .push({
1204                        let pop_up_weak = pop_up.downgrade();
1205
1206                        cx.observe_window_activation(window, move |_, window, cx| {
1207                            if window.is_window_active() {
1208                                if let Some(pop_up) = pop_up_weak.upgrade() {
1209                                    pop_up.update(cx, |_, cx| {
1210                                        cx.emit(AgentNotificationEvent::Dismissed);
1211                                    });
1212                                }
1213                            }
1214                        })
1215                    });
1216            }
1217        }
1218    }
1219
1220    /// Spawns a task to save the active thread.
1221    ///
1222    /// Only one task to save the thread will be in flight at a time.
1223    fn save_thread(&mut self, cx: &mut Context<Self>) {
1224        let thread = self.thread.clone();
1225        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1226            let task = this
1227                .update(cx, |this, cx| {
1228                    this.thread_store
1229                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1230                })
1231                .ok();
1232
1233            if let Some(task) = task {
1234                task.await.log_err();
1235            }
1236        }));
1237    }
1238
1239    fn start_editing_message(
1240        &mut self,
1241        message_id: MessageId,
1242        message_segments: &[MessageSegment],
1243        window: &mut Window,
1244        cx: &mut Context<Self>,
1245    ) {
1246        // User message should always consist of a single text segment,
1247        // therefore we can skip returning early if it's not a text segment.
1248        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1249            return;
1250        };
1251
1252        let editor = crate::message_editor::create_editor(
1253            self.workspace.clone(),
1254            self.context_store.downgrade(),
1255            self.thread_store.downgrade(),
1256            window,
1257            cx,
1258        );
1259        editor.update(cx, |editor, cx| {
1260            editor.set_text(message_text.clone(), window, cx);
1261            editor.focus_handle(cx).focus(window);
1262            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1263        });
1264        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1265            EditorEvent::BufferEdited => {
1266                this.update_editing_message_token_count(true, cx);
1267            }
1268            _ => {}
1269        });
1270
1271        let context_picker_menu_handle = PopoverMenuHandle::default();
1272        let context_strip = cx.new(|cx| {
1273            ContextStrip::new(
1274                self.context_store.clone(),
1275                self.workspace.clone(),
1276                Some(self.thread_store.downgrade()),
1277                context_picker_menu_handle.clone(),
1278                SuggestContextKind::File,
1279                window,
1280                cx,
1281            )
1282        });
1283
1284        let context_strip_subscription =
1285            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1286
1287        self.editing_message = Some((
1288            message_id,
1289            EditingMessageState {
1290                editor: editor.clone(),
1291                context_strip,
1292                context_picker_menu_handle,
1293                last_estimated_token_count: None,
1294                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1295                _update_token_count_task: None,
1296            },
1297        ));
1298        self.update_editing_message_token_count(false, cx);
1299        cx.notify();
1300    }
1301
1302    fn handle_context_strip_event(
1303        &mut self,
1304        _context_strip: &Entity<ContextStrip>,
1305        event: &ContextStripEvent,
1306        window: &mut Window,
1307        cx: &mut Context<Self>,
1308    ) {
1309        if let Some((_, state)) = self.editing_message.as_ref() {
1310            match event {
1311                ContextStripEvent::PickerDismissed
1312                | ContextStripEvent::BlurredEmpty
1313                | ContextStripEvent::BlurredDown => {
1314                    let editor_focus_handle = state.editor.focus_handle(cx);
1315                    window.focus(&editor_focus_handle);
1316                }
1317                ContextStripEvent::BlurredUp => {}
1318            }
1319        }
1320    }
1321
1322    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1323        let Some((message_id, state)) = self.editing_message.as_mut() else {
1324            return;
1325        };
1326
1327        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1328        state._update_token_count_task.take();
1329
1330        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1331            state.last_estimated_token_count.take();
1332            return;
1333        };
1334
1335        let editor = state.editor.clone();
1336        let thread = self.thread.clone();
1337        let message_id = *message_id;
1338
1339        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1340            if debounce {
1341                cx.background_executor()
1342                    .timer(Duration::from_millis(200))
1343                    .await;
1344            }
1345
1346            let token_count = if let Some(task) = cx
1347                .update(|cx| {
1348                    let Some(message) = thread.read(cx).message(message_id) else {
1349                        log::error!("Message that was being edited no longer exists");
1350                        return None;
1351                    };
1352                    let message_text = editor.read(cx).text(cx);
1353
1354                    if message_text.is_empty() && message.loaded_context.is_empty() {
1355                        return None;
1356                    }
1357
1358                    let mut request_message = LanguageModelRequestMessage {
1359                        role: language_model::Role::User,
1360                        content: Vec::new(),
1361                        cache: false,
1362                    };
1363
1364                    message
1365                        .loaded_context
1366                        .add_to_request_message(&mut request_message);
1367
1368                    if !message_text.is_empty() {
1369                        request_message
1370                            .content
1371                            .push(MessageContent::Text(message_text));
1372                    }
1373
1374                    let request = language_model::LanguageModelRequest {
1375                        thread_id: None,
1376                        prompt_id: None,
1377                        mode: None,
1378                        messages: vec![request_message],
1379                        tools: vec![],
1380                        stop: vec![],
1381                        temperature: None,
1382                    };
1383
1384                    Some(configured_model.model.count_tokens(request, cx))
1385                })
1386                .ok()
1387                .flatten()
1388            {
1389                task.await.log_err()
1390            } else {
1391                Some(0)
1392            };
1393
1394            if let Some(token_count) = token_count {
1395                this.update(cx, |this, cx| {
1396                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1397                        return;
1398                    };
1399
1400                    state.last_estimated_token_count = Some(token_count);
1401                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1402                })
1403                .ok();
1404            };
1405        }));
1406    }
1407
1408    fn toggle_context_picker(
1409        &mut self,
1410        _: &crate::ToggleContextPicker,
1411        window: &mut Window,
1412        cx: &mut Context<Self>,
1413    ) {
1414        if let Some((_, state)) = self.editing_message.as_mut() {
1415            let handle = state.context_picker_menu_handle.clone();
1416            window.defer(cx, move |window, cx| {
1417                handle.toggle(window, cx);
1418            });
1419        }
1420    }
1421
1422    fn remove_all_context(
1423        &mut self,
1424        _: &crate::RemoveAllContext,
1425        _window: &mut Window,
1426        cx: &mut Context<Self>,
1427    ) {
1428        self.context_store.update(cx, |store, _cx| store.clear());
1429        cx.notify();
1430    }
1431
1432    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1433        if let Some((_, state)) = self.editing_message.as_mut() {
1434            if state.context_picker_menu_handle.is_deployed() {
1435                cx.propagate();
1436            } else {
1437                state.context_strip.focus_handle(cx).focus(window);
1438            }
1439        }
1440    }
1441
1442    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1443        let images = cx
1444            .read_from_clipboard()
1445            .map(|item| {
1446                item.into_entries()
1447                    .filter_map(|entry| {
1448                        if let ClipboardEntry::Image(image) = entry {
1449                            Some(image)
1450                        } else {
1451                            None
1452                        }
1453                    })
1454                    .collect::<Vec<_>>()
1455            })
1456            .unwrap_or_default();
1457
1458        if images.is_empty() {
1459            return;
1460        }
1461        cx.stop_propagation();
1462
1463        self.context_store.update(cx, |store, cx| {
1464            for image in images {
1465                store.add_image_instance(Arc::new(image), cx);
1466            }
1467        });
1468    }
1469
1470    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1471        self.editing_message.take();
1472        cx.notify();
1473    }
1474
1475    fn confirm_editing_message(
1476        &mut self,
1477        _: &menu::Confirm,
1478        window: &mut Window,
1479        cx: &mut Context<Self>,
1480    ) {
1481        let Some((message_id, state)) = self.editing_message.take() else {
1482            return;
1483        };
1484
1485        let Some(model) = self
1486            .thread
1487            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1488        else {
1489            return;
1490        };
1491
1492        if model.provider.must_accept_terms(cx) {
1493            cx.notify();
1494            return;
1495        }
1496
1497        let edited_text = state.editor.read(cx).text(cx);
1498
1499        let new_context = self
1500            .context_store
1501            .read(cx)
1502            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1503
1504        let project = self.thread.read(cx).project().clone();
1505        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1506
1507        let load_context_task =
1508            crate::context::load_context(new_context, &project, &prompt_store, cx);
1509        self._load_edited_message_context_task =
1510            Some(cx.spawn_in(window, async move |this, cx| {
1511                let context = load_context_task.await;
1512                let _ = this
1513                    .update_in(cx, |this, window, cx| {
1514                        this.thread.update(cx, |thread, cx| {
1515                            thread.edit_message(
1516                                message_id,
1517                                Role::User,
1518                                vec![MessageSegment::Text(edited_text)],
1519                                Some(context.loaded_context),
1520                                cx,
1521                            );
1522                            for message_id in this.messages_after(message_id) {
1523                                thread.delete_message(*message_id, cx);
1524                            }
1525                        });
1526
1527                        this.thread.update(cx, |thread, cx| {
1528                            thread.advance_prompt_id();
1529                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1530                        });
1531                        this._load_edited_message_context_task = None;
1532                        cx.notify();
1533                    })
1534                    .log_err();
1535            }));
1536    }
1537
1538    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1539        self.messages
1540            .iter()
1541            .position(|id| *id == message_id)
1542            .map(|index| &self.messages[index + 1..])
1543            .unwrap_or(&[])
1544    }
1545
1546    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1547        self.cancel_editing_message(&menu::Cancel, window, cx);
1548    }
1549
1550    fn handle_regenerate_click(
1551        &mut self,
1552        _: &ClickEvent,
1553        window: &mut Window,
1554        cx: &mut Context<Self>,
1555    ) {
1556        self.confirm_editing_message(&menu::Confirm, window, cx);
1557    }
1558
1559    fn handle_feedback_click(
1560        &mut self,
1561        message_id: MessageId,
1562        feedback: ThreadFeedback,
1563        window: &mut Window,
1564        cx: &mut Context<Self>,
1565    ) {
1566        let report = self.thread.update(cx, |thread, cx| {
1567            thread.report_message_feedback(message_id, feedback, cx)
1568        });
1569
1570        cx.spawn(async move |this, cx| {
1571            report.await?;
1572            this.update(cx, |_this, cx| cx.notify())
1573        })
1574        .detach_and_log_err(cx);
1575
1576        match feedback {
1577            ThreadFeedback::Positive => {
1578                self.open_feedback_editors.remove(&message_id);
1579            }
1580            ThreadFeedback::Negative => {
1581                self.handle_show_feedback_comments(message_id, window, cx);
1582            }
1583        }
1584    }
1585
1586    fn handle_show_feedback_comments(
1587        &mut self,
1588        message_id: MessageId,
1589        window: &mut Window,
1590        cx: &mut Context<Self>,
1591    ) {
1592        let buffer = cx.new(|cx| {
1593            let empty_string = String::new();
1594            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1595        });
1596
1597        let editor = cx.new(|cx| {
1598            let mut editor = Editor::new(
1599                editor::EditorMode::AutoHeight { max_lines: 4 },
1600                buffer,
1601                None,
1602                window,
1603                cx,
1604            );
1605            editor.set_placeholder_text(
1606                "What went wrong? Share your feedback so we can improve.",
1607                cx,
1608            );
1609            editor
1610        });
1611
1612        editor.read(cx).focus_handle(cx).focus(window);
1613        self.open_feedback_editors.insert(message_id, editor);
1614        cx.notify();
1615    }
1616
1617    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1618        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1619            return;
1620        };
1621
1622        let report_task = self.thread.update(cx, |thread, cx| {
1623            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1624        });
1625
1626        let comments = editor.read(cx).text(cx);
1627        if !comments.is_empty() {
1628            let thread_id = self.thread.read(cx).id().clone();
1629            let comments_value = String::from(comments.as_str());
1630
1631            let message_content = self
1632                .thread
1633                .read(cx)
1634                .message(message_id)
1635                .map(|msg| msg.to_string())
1636                .unwrap_or_default();
1637
1638            telemetry::event!(
1639                "Assistant Thread Feedback Comments",
1640                thread_id,
1641                message_id = message_id.0,
1642                message_content,
1643                comments = comments_value
1644            );
1645
1646            self.open_feedback_editors.remove(&message_id);
1647
1648            cx.spawn(async move |this, cx| {
1649                report_task.await?;
1650                this.update(cx, |_this, cx| cx.notify())
1651            })
1652            .detach_and_log_err(cx);
1653        }
1654    }
1655
1656    fn render_edit_message_editor(
1657        &self,
1658        state: &EditingMessageState,
1659        window: &mut Window,
1660        cx: &Context<Self>,
1661    ) -> impl IntoElement {
1662        let settings = ThemeSettings::get_global(cx);
1663        let font_size = TextSize::Small.rems(cx);
1664        let line_height = font_size.to_pixels(window.rem_size()) * 1.75;
1665
1666        let colors = cx.theme().colors();
1667
1668        let text_style = TextStyle {
1669            color: colors.text,
1670            font_family: settings.buffer_font.family.clone(),
1671            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1672            font_features: settings.buffer_font.features.clone(),
1673            font_size: font_size.into(),
1674            line_height: line_height.into(),
1675            ..Default::default()
1676        };
1677
1678        v_flex()
1679            .key_context("EditMessageEditor")
1680            .on_action(cx.listener(Self::toggle_context_picker))
1681            .on_action(cx.listener(Self::remove_all_context))
1682            .on_action(cx.listener(Self::move_up))
1683            .on_action(cx.listener(Self::cancel_editing_message))
1684            .on_action(cx.listener(Self::confirm_editing_message))
1685            .capture_action(cx.listener(Self::paste))
1686            .min_h_6()
1687            .flex_grow()
1688            .w_full()
1689            .gap_2()
1690            .child(EditorElement::new(
1691                &state.editor,
1692                EditorStyle {
1693                    background: colors.editor_background,
1694                    local_player: cx.theme().players().local(),
1695                    text: text_style,
1696                    syntax: cx.theme().syntax().clone(),
1697                    ..Default::default()
1698                },
1699            ))
1700            .child(state.context_strip.clone())
1701    }
1702
1703    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1704        let message_id = self.messages[ix];
1705        let Some(message) = self.thread.read(cx).message(message_id) else {
1706            return Empty.into_any();
1707        };
1708
1709        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1710            return Empty.into_any();
1711        };
1712
1713        let workspace = self.workspace.clone();
1714        let thread = self.thread.read(cx);
1715
1716        // Get all the data we need from thread before we start using it in closures
1717        let checkpoint = thread.checkpoint_for_message(message_id);
1718        let added_context = thread
1719            .context_for_message(message_id)
1720            .map(|context| AddedContext::new_attached(context, cx))
1721            .collect::<Vec<_>>();
1722
1723        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1724        let has_tool_uses = !tool_uses.is_empty();
1725        let is_generating = thread.is_generating();
1726
1727        let is_first_message = ix == 0;
1728        let is_last_message = ix == self.messages.len() - 1;
1729
1730        let show_feedback = thread.is_turn_end(ix);
1731
1732        let generating_label = (is_generating && is_last_message)
1733            .then(|| AnimatedLabel::new("Generating").size(LabelSize::Small));
1734
1735        let editing_message_state = self
1736            .editing_message
1737            .as_ref()
1738            .filter(|(id, _)| *id == message_id)
1739            .map(|(_, state)| state);
1740
1741        let colors = cx.theme().colors();
1742        let editor_bg_color = colors.editor_background;
1743
1744        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileCode)
1745            .shape(ui::IconButtonShape::Square)
1746            .icon_size(IconSize::XSmall)
1747            .icon_color(Color::Ignored)
1748            .tooltip(Tooltip::text("Open Thread as Markdown"))
1749            .on_click(|_, window, cx| {
1750                window.dispatch_action(Box::new(OpenActiveThreadAsMarkdown), cx)
1751            });
1752
1753        // For all items that should be aligned with the LLM's response.
1754        const RESPONSE_PADDING_X: Pixels = px(19.);
1755
1756        let feedback_container = h_flex()
1757            .group("feedback_container")
1758            .mt_1()
1759            .py_2()
1760            .px(RESPONSE_PADDING_X)
1761            .gap_1()
1762            .flex_wrap()
1763            .justify_end();
1764        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1765            Some(feedback) => feedback_container
1766                .child(
1767                    div().mr_1().visible_on_hover("feedback_container").child(
1768                        Label::new(match feedback {
1769                            ThreadFeedback::Positive => "Thanks for your feedback!",
1770                            ThreadFeedback::Negative => {
1771                                "We appreciate your feedback and will use it to improve."
1772                            }
1773                        })
1774                    .color(Color::Muted)
1775                    .size(LabelSize::XSmall)
1776                    .truncate())
1777                )
1778                .child(
1779                    h_flex()
1780                        .pr_1()
1781                        .gap_1()
1782                        .child(
1783                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1784                                .shape(ui::IconButtonShape::Square)
1785                                .icon_size(IconSize::XSmall)
1786                                .icon_color(match feedback {
1787                                    ThreadFeedback::Positive => Color::Accent,
1788                                    ThreadFeedback::Negative => Color::Ignored,
1789                                })
1790                                .tooltip(Tooltip::text("Helpful Response"))
1791                                .on_click(cx.listener(move |this, _, window, cx| {
1792                                    this.handle_feedback_click(
1793                                        message_id,
1794                                        ThreadFeedback::Positive,
1795                                        window,
1796                                        cx,
1797                                    );
1798                                })),
1799                        )
1800                        .child(
1801                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1802                                .shape(ui::IconButtonShape::Square)
1803                                .icon_size(IconSize::XSmall)
1804                                .icon_color(match feedback {
1805                                    ThreadFeedback::Positive => Color::Ignored,
1806                                    ThreadFeedback::Negative => Color::Accent,
1807                                })
1808                                .tooltip(Tooltip::text("Not Helpful"))
1809                                .on_click(cx.listener(move |this, _, window, cx| {
1810                                    this.handle_feedback_click(
1811                                        message_id,
1812                                        ThreadFeedback::Negative,
1813                                        window,
1814                                        cx,
1815                                    );
1816                                })),
1817                        )
1818                        .child(open_as_markdown),
1819                )
1820                .into_any_element(),
1821            None => feedback_container
1822                .child(
1823                    div().mr_1().visible_on_hover("feedback_container").child(
1824                        Label::new(
1825                            "Rating the thread sends all of your current conversation to the Zed team.",
1826                        )
1827                        .color(Color::Muted)
1828                    .size(LabelSize::XSmall)
1829                    .truncate())
1830                )
1831                .child(
1832                    h_flex()
1833                        .pr_1()
1834                        .gap_1()
1835                        .child(
1836                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1837                                .icon_size(IconSize::XSmall)
1838                                .icon_color(Color::Ignored)
1839                                .shape(ui::IconButtonShape::Square)
1840                                .tooltip(Tooltip::text("Helpful Response"))
1841                                .on_click(cx.listener(move |this, _, window, cx| {
1842                                    this.handle_feedback_click(
1843                                        message_id,
1844                                        ThreadFeedback::Positive,
1845                                        window,
1846                                        cx,
1847                                    );
1848                                })),
1849                        )
1850                        .child(
1851                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1852                                .icon_size(IconSize::XSmall)
1853                                .icon_color(Color::Ignored)
1854                                .shape(ui::IconButtonShape::Square)
1855                                .tooltip(Tooltip::text("Not Helpful"))
1856                                .on_click(cx.listener(move |this, _, window, cx| {
1857                                    this.handle_feedback_click(
1858                                        message_id,
1859                                        ThreadFeedback::Negative,
1860                                        window,
1861                                        cx,
1862                                    );
1863                                })),
1864                        )
1865                        .child(open_as_markdown),
1866                )
1867                .into_any_element(),
1868        };
1869
1870        let message_is_empty = message.should_display_content();
1871        let has_content = !message_is_empty || !added_context.is_empty();
1872
1873        let message_content = has_content.then(|| {
1874            if let Some(state) = editing_message_state.as_ref() {
1875                self.render_edit_message_editor(state, window, cx)
1876                    .into_any_element()
1877            } else {
1878                v_flex()
1879                    .w_full()
1880                    .gap_1()
1881                    .when(!message_is_empty, |parent| {
1882                        parent.child(div().min_h_6().child(self.render_message_content(
1883                            message_id,
1884                            rendered_message,
1885                            has_tool_uses,
1886                            workspace.clone(),
1887                            window,
1888                            cx,
1889                        )))
1890                    })
1891                    .when(!added_context.is_empty(), |parent| {
1892                        parent.child(h_flex().flex_wrap().gap_1().children(
1893                            added_context.into_iter().map(|added_context| {
1894                                let context = added_context.handle.clone();
1895                                ContextPill::added(added_context, false, false, None).on_click(
1896                                    Rc::new(cx.listener({
1897                                        let workspace = workspace.clone();
1898                                        move |_, _, window, cx| {
1899                                            if let Some(workspace) = workspace.upgrade() {
1900                                                open_context(&context, workspace, window, cx);
1901                                                cx.notify();
1902                                            }
1903                                        }
1904                                    })),
1905                                )
1906                            }),
1907                        ))
1908                    })
1909                    .into_any_element()
1910            }
1911        });
1912
1913        let styled_message = match message.role {
1914            Role::User => v_flex()
1915                .id(("message-container", ix))
1916                .pt_2()
1917                .pl_2()
1918                .pr_2p5()
1919                .pb_4()
1920                .child(
1921                    v_flex()
1922                        .id(("user-message", ix))
1923                        .bg(editor_bg_color)
1924                        .rounded_lg()
1925                        .shadow_md()
1926                        .border_1()
1927                        .border_color(colors.border)
1928                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1929                        .cursor_pointer()
1930                        .child(
1931                            h_flex()
1932                                .p_2p5()
1933                                .gap_1()
1934                                .children(message_content)
1935                                .when_some(editing_message_state, |this, state| {
1936                                    let focus_handle = state.editor.focus_handle(cx).clone();
1937                                    this.w_full().justify_between().child(
1938                                        h_flex()
1939                                            .gap_0p5()
1940                                            .child(
1941                                                IconButton::new(
1942                                                    "cancel-edit-message",
1943                                                    IconName::Close,
1944                                                )
1945                                                .shape(ui::IconButtonShape::Square)
1946                                                .icon_color(Color::Error)
1947                                                .tooltip({
1948                                                    let focus_handle = focus_handle.clone();
1949                                                    move |window, cx| {
1950                                                        Tooltip::for_action_in(
1951                                                            "Cancel Edit",
1952                                                            &menu::Cancel,
1953                                                            &focus_handle,
1954                                                            window,
1955                                                            cx,
1956                                                        )
1957                                                    }
1958                                                })
1959                                                .on_click(cx.listener(Self::handle_cancel_click)),
1960                                            )
1961                                            .child(
1962                                                IconButton::new(
1963                                                    "confirm-edit-message",
1964                                                    IconName::Check,
1965                                                )
1966                                                .disabled(state.editor.read(cx).is_empty(cx))
1967                                                .shape(ui::IconButtonShape::Square)
1968                                                .icon_color(Color::Success)
1969                                                .tooltip({
1970                                                    let focus_handle = focus_handle.clone();
1971                                                    move |window, cx| {
1972                                                        Tooltip::for_action_in(
1973                                                            "Regenerate",
1974                                                            &menu::Confirm,
1975                                                            &focus_handle,
1976                                                            window,
1977                                                            cx,
1978                                                        )
1979                                                    }
1980                                                })
1981                                                .on_click(
1982                                                    cx.listener(Self::handle_regenerate_click),
1983                                                ),
1984                                            ),
1985                                    )
1986                                }),
1987                        )
1988                        .when(editing_message_state.is_none(), |this| {
1989                            this.tooltip(Tooltip::text("Click To Edit"))
1990                        })
1991                        .on_click(cx.listener({
1992                            let message_segments = message.segments.clone();
1993                            move |this, _, window, cx| {
1994                                this.start_editing_message(
1995                                    message_id,
1996                                    &message_segments,
1997                                    window,
1998                                    cx,
1999                                );
2000                            }
2001                        })),
2002                ),
2003            Role::Assistant => v_flex()
2004                .id(("message-container", ix))
2005                .px(RESPONSE_PADDING_X)
2006                .gap_2()
2007                .children(message_content)
2008                .when(has_tool_uses, |parent| {
2009                    parent.children(tool_uses.into_iter().map(|tool_use| {
2010                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2011                    }))
2012                }),
2013            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2014                v_flex()
2015                    .bg(colors.editor_background)
2016                    .rounded_sm()
2017                    .child(div().p_4().children(message_content)),
2018            ),
2019        };
2020
2021        let after_editing_message = self
2022            .editing_message
2023            .as_ref()
2024            .map_or(false, |(editing_message_id, _)| {
2025                message_id > *editing_message_id
2026            });
2027
2028        let panel_background = cx.theme().colors().panel_background;
2029
2030        v_flex()
2031            .w_full()
2032            .when_some(checkpoint, |parent, checkpoint| {
2033                let mut is_pending = false;
2034                let mut error = None;
2035                if let Some(last_restore_checkpoint) =
2036                    self.thread.read(cx).last_restore_checkpoint()
2037                {
2038                    if last_restore_checkpoint.message_id() == message_id {
2039                        match last_restore_checkpoint {
2040                            LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2041                            LastRestoreCheckpoint::Error { error: err, .. } => {
2042                                error = Some(err.clone());
2043                            }
2044                        }
2045                    }
2046                }
2047
2048                let restore_checkpoint_button =
2049                    Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2050                        .icon(if error.is_some() {
2051                            IconName::XCircle
2052                        } else {
2053                            IconName::Undo
2054                        })
2055                        .icon_size(IconSize::XSmall)
2056                        .icon_position(IconPosition::Start)
2057                        .icon_color(if error.is_some() {
2058                            Some(Color::Error)
2059                        } else {
2060                            None
2061                        })
2062                        .label_size(LabelSize::XSmall)
2063                        .disabled(is_pending)
2064                        .on_click(cx.listener(move |this, _, _window, cx| {
2065                            this.thread.update(cx, |thread, cx| {
2066                                thread
2067                                    .restore_checkpoint(checkpoint.clone(), cx)
2068                                    .detach_and_log_err(cx);
2069                            });
2070                        }));
2071
2072                let restore_checkpoint_button = if is_pending {
2073                    restore_checkpoint_button
2074                        .with_animation(
2075                            ("pulsating-restore-checkpoint-button", ix),
2076                            Animation::new(Duration::from_secs(2))
2077                                .repeat()
2078                                .with_easing(pulsating_between(0.6, 1.)),
2079                            |label, delta| label.alpha(delta),
2080                        )
2081                        .into_any_element()
2082                } else if let Some(error) = error {
2083                    restore_checkpoint_button
2084                        .tooltip(Tooltip::text(error.to_string()))
2085                        .into_any_element()
2086                } else {
2087                    restore_checkpoint_button.into_any_element()
2088                };
2089
2090                parent.child(
2091                    h_flex()
2092                        .pt_2p5()
2093                        .px_2p5()
2094                        .w_full()
2095                        .gap_1()
2096                        .child(ui::Divider::horizontal())
2097                        .child(restore_checkpoint_button)
2098                        .child(ui::Divider::horizontal()),
2099                )
2100            })
2101            .when(is_first_message, |parent| {
2102                parent.child(self.render_rules_item(cx))
2103            })
2104            .child(styled_message)
2105            .when(generating_label.is_some(), |this| {
2106                this.child(
2107                    h_flex()
2108                        .h_8()
2109                        .mt_2()
2110                        .mb_4()
2111                        .ml_4()
2112                        .py_1p5()
2113                        .child(generating_label.unwrap()),
2114                )
2115            })
2116            .when(show_feedback, move |parent| {
2117                parent.child(feedback_items).when_some(
2118                    self.open_feedback_editors.get(&message_id),
2119                    move |parent, feedback_editor| {
2120                        let focus_handle = feedback_editor.focus_handle(cx);
2121                        parent.child(
2122                            v_flex()
2123                                .key_context("AgentFeedbackMessageEditor")
2124                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2125                                    this.open_feedback_editors.remove(&message_id);
2126                                    cx.notify();
2127                                }))
2128                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2129                                    this.submit_feedback_message(message_id, cx);
2130                                    cx.notify();
2131                                }))
2132                                .on_action(cx.listener(Self::confirm_editing_message))
2133                                .mb_2()
2134                                .mx_4()
2135                                .p_2()
2136                                .rounded_md()
2137                                .border_1()
2138                                .border_color(cx.theme().colors().border)
2139                                .bg(cx.theme().colors().editor_background)
2140                                .child(feedback_editor.clone())
2141                                .child(
2142                                    h_flex()
2143                                        .gap_1()
2144                                        .justify_end()
2145                                        .child(
2146                                            Button::new("dismiss-feedback-message", "Cancel")
2147                                                .label_size(LabelSize::Small)
2148                                                .key_binding(
2149                                                    KeyBinding::for_action_in(
2150                                                        &menu::Cancel,
2151                                                        &focus_handle,
2152                                                        window,
2153                                                        cx,
2154                                                    )
2155                                                    .map(|kb| kb.size(rems_from_px(10.))),
2156                                                )
2157                                                .on_click(cx.listener(
2158                                                    move |this, _, _window, cx| {
2159                                                        this.open_feedback_editors
2160                                                            .remove(&message_id);
2161                                                        cx.notify();
2162                                                    },
2163                                                )),
2164                                        )
2165                                        .child(
2166                                            Button::new(
2167                                                "submit-feedback-message",
2168                                                "Share Feedback",
2169                                            )
2170                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2171                                            .label_size(LabelSize::Small)
2172                                            .key_binding(
2173                                                KeyBinding::for_action_in(
2174                                                    &menu::Confirm,
2175                                                    &focus_handle,
2176                                                    window,
2177                                                    cx,
2178                                                )
2179                                                .map(|kb| kb.size(rems_from_px(10.))),
2180                                            )
2181                                            .on_click(
2182                                                cx.listener(move |this, _, _window, cx| {
2183                                                    this.submit_feedback_message(message_id, cx);
2184                                                    cx.notify()
2185                                                }),
2186                                            ),
2187                                        ),
2188                                ),
2189                        )
2190                    },
2191                )
2192            })
2193            .when(after_editing_message, |parent| {
2194                // Backdrop to dim out the whole thread below the editing user message
2195                parent.relative().child(
2196                    div()
2197                        .occlude()
2198                        .absolute()
2199                        .inset_0()
2200                        .size_full()
2201                        .bg(panel_background)
2202                        .opacity(0.8),
2203                )
2204            })
2205            .into_any()
2206    }
2207
2208    fn render_message_content(
2209        &self,
2210        message_id: MessageId,
2211        rendered_message: &RenderedMessage,
2212        has_tool_uses: bool,
2213        workspace: WeakEntity<Workspace>,
2214        window: &Window,
2215        cx: &Context<Self>,
2216    ) -> impl IntoElement {
2217        let is_last_message = self.messages.last() == Some(&message_id);
2218        let is_generating = self.thread.read(cx).is_generating();
2219        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2220            rendered_message
2221                .segments
2222                .iter()
2223                .enumerate()
2224                .next_back()
2225                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2226                .map(|(index, _)| index)
2227        } else {
2228            None
2229        };
2230
2231        let message_role = self
2232            .thread
2233            .read(cx)
2234            .message(message_id)
2235            .map(|m| m.role)
2236            .unwrap_or(Role::User);
2237
2238        let is_assistant_message = message_role == Role::Assistant;
2239        let is_user_message = message_role == Role::User;
2240
2241        v_flex()
2242            .text_ui(cx)
2243            .gap_2()
2244            .when(is_user_message, |this| this.text_xs())
2245            .children(
2246                rendered_message.segments.iter().enumerate().map(
2247                    |(index, segment)| match segment {
2248                        RenderedMessageSegment::Thinking {
2249                            content,
2250                            scroll_handle,
2251                        } => self
2252                            .render_message_thinking_segment(
2253                                message_id,
2254                                index,
2255                                content.clone(),
2256                                &scroll_handle,
2257                                Some(index) == pending_thinking_segment_index,
2258                                window,
2259                                cx,
2260                            )
2261                            .into_any_element(),
2262                        RenderedMessageSegment::Text(markdown) => {
2263                            let markdown_element = MarkdownElement::new(
2264                                markdown.clone(),
2265                                if is_user_message {
2266                                    let mut style = default_markdown_style(window, cx);
2267                                    let mut text_style = window.text_style();
2268                                    let theme_settings = ThemeSettings::get_global(cx);
2269
2270                                    let buffer_font = theme_settings.buffer_font.family.clone();
2271                                    let buffer_font_size = TextSize::Small.rems(cx);
2272
2273                                    text_style.refine(&TextStyleRefinement {
2274                                        font_family: Some(buffer_font),
2275                                        font_size: Some(buffer_font_size.into()),
2276                                        ..Default::default()
2277                                    });
2278
2279                                    style.base_text_style = text_style;
2280                                    style
2281                                } else {
2282                                    default_markdown_style(window, cx)
2283                                },
2284                            );
2285
2286                            let markdown_element = if is_assistant_message {
2287                                markdown_element.code_block_renderer(
2288                                    markdown::CodeBlockRenderer::Custom {
2289                                        render: Arc::new({
2290                                            let workspace = workspace.clone();
2291                                            let active_thread = cx.entity();
2292                                            move |kind,
2293                                                  parsed_markdown,
2294                                                  range,
2295                                                  metadata,
2296                                                  window,
2297                                                  cx| {
2298                                                render_markdown_code_block(
2299                                                    message_id,
2300                                                    range.start,
2301                                                    kind,
2302                                                    parsed_markdown,
2303                                                    metadata,
2304                                                    active_thread.clone(),
2305                                                    workspace.clone(),
2306                                                    window,
2307                                                    cx,
2308                                                )
2309                                            }
2310                                        }),
2311                                        transform: Some(Arc::new({
2312                                            let active_thread = cx.entity();
2313                                            let editor_bg = cx.theme().colors().editor_background;
2314
2315                                            move |el, range, metadata, _, cx| {
2316                                                let is_expanded = active_thread
2317                                                    .read(cx)
2318                                                    .expanded_code_blocks
2319                                                    .get(&(message_id, range.start))
2320                                                    .copied()
2321                                                    .unwrap_or(true);
2322
2323                                                if is_expanded
2324                                                    || metadata.line_count
2325                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2326                                                {
2327                                                    return el;
2328                                                }
2329                                                el.child(
2330                                                    div()
2331                                                        .absolute()
2332                                                        .bottom_0()
2333                                                        .left_0()
2334                                                        .w_full()
2335                                                        .h_1_4()
2336                                                        .rounded_b_lg()
2337                                                        .bg(linear_gradient(
2338                                                            0.,
2339                                                            linear_color_stop(editor_bg, 0.),
2340                                                            linear_color_stop(
2341                                                                editor_bg.opacity(0.),
2342                                                                1.,
2343                                                            ),
2344                                                        )),
2345                                                )
2346                                            }
2347                                        })),
2348                                    },
2349                                )
2350                            } else {
2351                                markdown_element.code_block_renderer(
2352                                    markdown::CodeBlockRenderer::Default {
2353                                        copy_button: false,
2354                                        border: true,
2355                                    },
2356                                )
2357                            };
2358
2359                            div()
2360                                .child(markdown_element.on_url_click({
2361                                    let workspace = self.workspace.clone();
2362                                    move |text, window, cx| {
2363                                        open_markdown_link(text, workspace.clone(), window, cx);
2364                                    }
2365                                }))
2366                                .into_any_element()
2367                        }
2368                    },
2369                ),
2370            )
2371    }
2372
2373    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2374        cx.theme().colors().border.opacity(0.5)
2375    }
2376
2377    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2378        cx.theme()
2379            .colors()
2380            .element_background
2381            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2382    }
2383
2384    fn render_message_thinking_segment(
2385        &self,
2386        message_id: MessageId,
2387        ix: usize,
2388        markdown: Entity<Markdown>,
2389        scroll_handle: &ScrollHandle,
2390        pending: bool,
2391        window: &Window,
2392        cx: &Context<Self>,
2393    ) -> impl IntoElement {
2394        let is_open = self
2395            .expanded_thinking_segments
2396            .get(&(message_id, ix))
2397            .copied()
2398            .unwrap_or_default();
2399
2400        let editor_bg = cx.theme().colors().panel_background;
2401
2402        div().map(|this| {
2403            if pending {
2404                this.v_flex()
2405                    .mt_neg_2()
2406                    .mb_1p5()
2407                    .child(
2408                        h_flex()
2409                            .group("disclosure-header")
2410                            .justify_between()
2411                            .child(
2412                                h_flex()
2413                                    .gap_1p5()
2414                                    .child(
2415                                        Icon::new(IconName::LightBulb)
2416                                            .size(IconSize::XSmall)
2417                                            .color(Color::Muted),
2418                                    )
2419                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2420                            )
2421                            .child(
2422                                h_flex()
2423                                    .gap_1()
2424                                    .child(
2425                                        div().visible_on_hover("disclosure-header").child(
2426                                            Disclosure::new("thinking-disclosure", is_open)
2427                                                .opened_icon(IconName::ChevronUp)
2428                                                .closed_icon(IconName::ChevronDown)
2429                                                .on_click(cx.listener({
2430                                                    move |this, _event, _window, _cx| {
2431                                                        let is_open = this
2432                                                            .expanded_thinking_segments
2433                                                            .entry((message_id, ix))
2434                                                            .or_insert(false);
2435
2436                                                        *is_open = !*is_open;
2437                                                    }
2438                                                })),
2439                                        ),
2440                                    )
2441                                    .child({
2442                                        Icon::new(IconName::ArrowCircle)
2443                                            .color(Color::Accent)
2444                                            .size(IconSize::Small)
2445                                            .with_animation(
2446                                                "arrow-circle",
2447                                                Animation::new(Duration::from_secs(2)).repeat(),
2448                                                |icon, delta| {
2449                                                    icon.transform(Transformation::rotate(
2450                                                        percentage(delta),
2451                                                    ))
2452                                                },
2453                                            )
2454                                    }),
2455                            ),
2456                    )
2457                    .when(!is_open, |this| {
2458                        let gradient_overlay = div()
2459                            .rounded_b_lg()
2460                            .h_full()
2461                            .absolute()
2462                            .w_full()
2463                            .bottom_0()
2464                            .left_0()
2465                            .bg(linear_gradient(
2466                                180.,
2467                                linear_color_stop(editor_bg, 1.),
2468                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2469                            ));
2470
2471                        this.child(
2472                            div()
2473                                .relative()
2474                                .bg(editor_bg)
2475                                .rounded_b_lg()
2476                                .mt_2()
2477                                .pl_4()
2478                                .child(
2479                                    div()
2480                                        .id(("thinking-content", ix))
2481                                        .max_h_20()
2482                                        .track_scroll(scroll_handle)
2483                                        .text_ui_sm(cx)
2484                                        .overflow_hidden()
2485                                        .child(
2486                                            MarkdownElement::new(
2487                                                markdown.clone(),
2488                                                default_markdown_style(window, cx),
2489                                            )
2490                                            .on_url_click({
2491                                                let workspace = self.workspace.clone();
2492                                                move |text, window, cx| {
2493                                                    open_markdown_link(
2494                                                        text,
2495                                                        workspace.clone(),
2496                                                        window,
2497                                                        cx,
2498                                                    );
2499                                                }
2500                                            }),
2501                                        ),
2502                                )
2503                                .child(gradient_overlay),
2504                        )
2505                    })
2506                    .when(is_open, |this| {
2507                        this.child(
2508                            div()
2509                                .id(("thinking-content", ix))
2510                                .h_full()
2511                                .bg(editor_bg)
2512                                .text_ui_sm(cx)
2513                                .child(
2514                                    MarkdownElement::new(
2515                                        markdown.clone(),
2516                                        default_markdown_style(window, cx),
2517                                    )
2518                                    .on_url_click({
2519                                        let workspace = self.workspace.clone();
2520                                        move |text, window, cx| {
2521                                            open_markdown_link(text, workspace.clone(), window, cx);
2522                                        }
2523                                    }),
2524                                ),
2525                        )
2526                    })
2527            } else {
2528                this.v_flex()
2529                    .mt_neg_2()
2530                    .child(
2531                        h_flex()
2532                            .group("disclosure-header")
2533                            .pr_1()
2534                            .justify_between()
2535                            .opacity(0.8)
2536                            .hover(|style| style.opacity(1.))
2537                            .child(
2538                                h_flex()
2539                                    .gap_1p5()
2540                                    .child(
2541                                        Icon::new(IconName::LightBulb)
2542                                            .size(IconSize::XSmall)
2543                                            .color(Color::Muted),
2544                                    )
2545                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2546                            )
2547                            .child(
2548                                div().visible_on_hover("disclosure-header").child(
2549                                    Disclosure::new("thinking-disclosure", is_open)
2550                                        .opened_icon(IconName::ChevronUp)
2551                                        .closed_icon(IconName::ChevronDown)
2552                                        .on_click(cx.listener({
2553                                            move |this, _event, _window, _cx| {
2554                                                let is_open = this
2555                                                    .expanded_thinking_segments
2556                                                    .entry((message_id, ix))
2557                                                    .or_insert(false);
2558
2559                                                *is_open = !*is_open;
2560                                            }
2561                                        })),
2562                                ),
2563                            ),
2564                    )
2565                    .child(
2566                        div()
2567                            .id(("thinking-content", ix))
2568                            .relative()
2569                            .mt_1p5()
2570                            .ml_1p5()
2571                            .pl_2p5()
2572                            .border_l_1()
2573                            .border_color(cx.theme().colors().border_variant)
2574                            .text_ui_sm(cx)
2575                            .when(is_open, |this| {
2576                                this.child(
2577                                    MarkdownElement::new(
2578                                        markdown.clone(),
2579                                        default_markdown_style(window, cx),
2580                                    )
2581                                    .on_url_click({
2582                                        let workspace = self.workspace.clone();
2583                                        move |text, window, cx| {
2584                                            open_markdown_link(text, workspace.clone(), window, cx);
2585                                        }
2586                                    }),
2587                                )
2588                            }),
2589                    )
2590            }
2591        })
2592    }
2593
2594    fn render_tool_use(
2595        &self,
2596        tool_use: ToolUse,
2597        window: &mut Window,
2598        workspace: WeakEntity<Workspace>,
2599        cx: &mut Context<Self>,
2600    ) -> impl IntoElement + use<> {
2601        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2602            return card.render(&tool_use.status, window, workspace, cx);
2603        }
2604
2605        let is_open = self
2606            .expanded_tool_uses
2607            .get(&tool_use.id)
2608            .copied()
2609            .unwrap_or_default();
2610
2611        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2612
2613        let fs = self
2614            .workspace
2615            .upgrade()
2616            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2617        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2618        let needs_confirmation_tools = tool_use.needs_confirmation;
2619
2620        let status_icons = div().child(match &tool_use.status {
2621            ToolUseStatus::NeedsConfirmation => {
2622                let icon = Icon::new(IconName::Warning)
2623                    .color(Color::Warning)
2624                    .size(IconSize::Small);
2625                icon.into_any_element()
2626            }
2627            ToolUseStatus::Pending
2628            | ToolUseStatus::InputStillStreaming
2629            | ToolUseStatus::Running => {
2630                let icon = Icon::new(IconName::ArrowCircle)
2631                    .color(Color::Accent)
2632                    .size(IconSize::Small);
2633                icon.with_animation(
2634                    "arrow-circle",
2635                    Animation::new(Duration::from_secs(2)).repeat(),
2636                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2637                )
2638                .into_any_element()
2639            }
2640            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2641            ToolUseStatus::Error(_) => {
2642                let icon = Icon::new(IconName::Close)
2643                    .color(Color::Error)
2644                    .size(IconSize::Small);
2645                icon.into_any_element()
2646            }
2647        });
2648
2649        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2650        let results_content_container = || v_flex().p_2().gap_0p5();
2651
2652        let results_content = v_flex()
2653            .gap_1()
2654            .child(
2655                results_content_container()
2656                    .child(
2657                        Label::new("Input")
2658                            .size(LabelSize::XSmall)
2659                            .color(Color::Muted)
2660                            .buffer_font(cx),
2661                    )
2662                    .child(
2663                        div()
2664                            .w_full()
2665                            .text_ui_sm(cx)
2666                            .children(rendered_tool_use.as_ref().map(|rendered| {
2667                                MarkdownElement::new(
2668                                    rendered.input.clone(),
2669                                    tool_use_markdown_style(window, cx),
2670                                )
2671                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2672                                    copy_button: false,
2673                                    border: false,
2674                                })
2675                                .on_url_click({
2676                                    let workspace = self.workspace.clone();
2677                                    move |text, window, cx| {
2678                                        open_markdown_link(text, workspace.clone(), window, cx);
2679                                    }
2680                                })
2681                            })),
2682                    ),
2683            )
2684            .map(|container| match tool_use.status {
2685                ToolUseStatus::Finished(_) => container.child(
2686                    results_content_container()
2687                        .border_t_1()
2688                        .border_color(self.tool_card_border_color(cx))
2689                        .child(
2690                            Label::new("Result")
2691                                .size(LabelSize::XSmall)
2692                                .color(Color::Muted)
2693                                .buffer_font(cx),
2694                        )
2695                        .child(div().w_full().text_ui_sm(cx).children(
2696                            rendered_tool_use.as_ref().map(|rendered| {
2697                                MarkdownElement::new(
2698                                    rendered.output.clone(),
2699                                    tool_use_markdown_style(window, cx),
2700                                )
2701                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2702                                    copy_button: false,
2703                                    border: false,
2704                                })
2705                                .on_url_click({
2706                                    let workspace = self.workspace.clone();
2707                                    move |text, window, cx| {
2708                                        open_markdown_link(text, workspace.clone(), window, cx);
2709                                    }
2710                                })
2711                                .into_any_element()
2712                            }),
2713                        )),
2714                ),
2715                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2716                    results_content_container()
2717                        .border_t_1()
2718                        .border_color(self.tool_card_border_color(cx))
2719                        .child(
2720                            h_flex()
2721                                .gap_1()
2722                                .child(
2723                                    Icon::new(IconName::ArrowCircle)
2724                                        .size(IconSize::Small)
2725                                        .color(Color::Accent)
2726                                        .with_animation(
2727                                            "arrow-circle",
2728                                            Animation::new(Duration::from_secs(2)).repeat(),
2729                                            |icon, delta| {
2730                                                icon.transform(Transformation::rotate(percentage(
2731                                                    delta,
2732                                                )))
2733                                            },
2734                                        ),
2735                                )
2736                                .child(
2737                                    Label::new("Running…")
2738                                        .size(LabelSize::XSmall)
2739                                        .color(Color::Muted)
2740                                        .buffer_font(cx),
2741                                ),
2742                        ),
2743                ),
2744                ToolUseStatus::Error(_) => container.child(
2745                    results_content_container()
2746                        .border_t_1()
2747                        .border_color(self.tool_card_border_color(cx))
2748                        .child(
2749                            Label::new("Error")
2750                                .size(LabelSize::XSmall)
2751                                .color(Color::Muted)
2752                                .buffer_font(cx),
2753                        )
2754                        .child(
2755                            div()
2756                                .text_ui_sm(cx)
2757                                .children(rendered_tool_use.as_ref().map(|rendered| {
2758                                    MarkdownElement::new(
2759                                        rendered.output.clone(),
2760                                        tool_use_markdown_style(window, cx),
2761                                    )
2762                                    .on_url_click({
2763                                        let workspace = self.workspace.clone();
2764                                        move |text, window, cx| {
2765                                            open_markdown_link(text, workspace.clone(), window, cx);
2766                                        }
2767                                    })
2768                                    .into_any_element()
2769                                })),
2770                        ),
2771                ),
2772                ToolUseStatus::Pending => container,
2773                ToolUseStatus::NeedsConfirmation => container.child(
2774                    results_content_container()
2775                        .border_t_1()
2776                        .border_color(self.tool_card_border_color(cx))
2777                        .child(
2778                            Label::new("Asking Permission")
2779                                .size(LabelSize::Small)
2780                                .color(Color::Muted)
2781                                .buffer_font(cx),
2782                        ),
2783                ),
2784            });
2785
2786        let gradient_overlay = |color: Hsla| {
2787            div()
2788                .h_full()
2789                .absolute()
2790                .w_12()
2791                .bottom_0()
2792                .map(|element| {
2793                    if is_status_finished {
2794                        element.right_6()
2795                    } else {
2796                        element.right(px(44.))
2797                    }
2798                })
2799                .bg(linear_gradient(
2800                    90.,
2801                    linear_color_stop(color, 1.),
2802                    linear_color_stop(color.opacity(0.2), 0.),
2803                ))
2804        };
2805
2806        v_flex().gap_1().mb_2().map(|element| {
2807            if !needs_confirmation_tools {
2808                element.child(
2809                    v_flex()
2810                        .child(
2811                            h_flex()
2812                                .group("disclosure-header")
2813                                .relative()
2814                                .gap_1p5()
2815                                .justify_between()
2816                                .opacity(0.8)
2817                                .hover(|style| style.opacity(1.))
2818                                .when(!is_status_finished, |this| this.pr_2())
2819                                .child(
2820                                    h_flex()
2821                                        .id("tool-label-container")
2822                                        .gap_1p5()
2823                                        .max_w_full()
2824                                        .overflow_x_scroll()
2825                                        .child(
2826                                            Icon::new(tool_use.icon)
2827                                                .size(IconSize::XSmall)
2828                                                .color(Color::Muted),
2829                                        )
2830                                        .child(
2831                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2832                                                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| {
2833                                                    open_markdown_link(text, workspace.clone(), window, cx);
2834                                                }}))
2835                                            ),
2836                                        ),
2837                                )
2838                                .child(
2839                                    h_flex()
2840                                        .gap_1()
2841                                        .child(
2842                                            div().visible_on_hover("disclosure-header").child(
2843                                                Disclosure::new("tool-use-disclosure", is_open)
2844                                                    .opened_icon(IconName::ChevronUp)
2845                                                    .closed_icon(IconName::ChevronDown)
2846                                                    .on_click(cx.listener({
2847                                                        let tool_use_id = tool_use.id.clone();
2848                                                        move |this, _event, _window, _cx| {
2849                                                            let is_open = this
2850                                                                .expanded_tool_uses
2851                                                                .entry(tool_use_id.clone())
2852                                                                .or_insert(false);
2853
2854                                                            *is_open = !*is_open;
2855                                                        }
2856                                                    })),
2857                                            ),
2858                                        )
2859                                        .child(status_icons),
2860                                )
2861                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2862                        )
2863                        .map(|parent| {
2864                            if !is_open {
2865                                return parent;
2866                            }
2867
2868                            parent.child(
2869                                v_flex()
2870                                    .mt_1()
2871                                    .border_1()
2872                                    .border_color(self.tool_card_border_color(cx))
2873                                    .bg(cx.theme().colors().editor_background)
2874                                    .rounded_lg()
2875                                    .child(results_content),
2876                            )
2877                        }),
2878                )
2879            } else {
2880                v_flex()
2881                    .mb_2()
2882                    .rounded_lg()
2883                    .border_1()
2884                    .border_color(self.tool_card_border_color(cx))
2885                    .overflow_hidden()
2886                    .child(
2887                        h_flex()
2888                            .group("disclosure-header")
2889                            .relative()
2890                            .justify_between()
2891                            .py_1()
2892                            .map(|element| {
2893                                if is_status_finished {
2894                                    element.pl_2().pr_0p5()
2895                                } else {
2896                                    element.px_2()
2897                                }
2898                            })
2899                            .bg(self.tool_card_header_bg(cx))
2900                            .map(|element| {
2901                                if is_open {
2902                                    element.border_b_1().rounded_t_md()
2903                                } else if needs_confirmation {
2904                                    element.rounded_t_md()
2905                                } else {
2906                                    element.rounded_md()
2907                                }
2908                            })
2909                            .border_color(self.tool_card_border_color(cx))
2910                            .child(
2911                                h_flex()
2912                                    .id("tool-label-container")
2913                                    .gap_1p5()
2914                                    .max_w_full()
2915                                    .overflow_x_scroll()
2916                                    .child(
2917                                        Icon::new(tool_use.icon)
2918                                            .size(IconSize::XSmall)
2919                                            .color(Color::Muted),
2920                                    )
2921                                    .child(
2922                                        h_flex().pr_8().text_ui_sm(cx).children(
2923                                            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| {
2924                                                open_markdown_link(text, workspace.clone(), window, cx);
2925                                            }}))
2926                                        ),
2927                                    ),
2928                            )
2929                            .child(
2930                                h_flex()
2931                                    .gap_1()
2932                                    .child(
2933                                        div().visible_on_hover("disclosure-header").child(
2934                                            Disclosure::new("tool-use-disclosure", is_open)
2935                                                .opened_icon(IconName::ChevronUp)
2936                                                .closed_icon(IconName::ChevronDown)
2937                                                .on_click(cx.listener({
2938                                                    let tool_use_id = tool_use.id.clone();
2939                                                    move |this, _event, _window, _cx| {
2940                                                        let is_open = this
2941                                                            .expanded_tool_uses
2942                                                            .entry(tool_use_id.clone())
2943                                                            .or_insert(false);
2944
2945                                                        *is_open = !*is_open;
2946                                                    }
2947                                                })),
2948                                        ),
2949                                    )
2950                                    .child(status_icons),
2951                            )
2952                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
2953                    )
2954                    .map(|parent| {
2955                        if !is_open {
2956                            return parent;
2957                        }
2958
2959                        parent.child(
2960                            v_flex()
2961                                .bg(cx.theme().colors().editor_background)
2962                                .map(|element| {
2963                                    if  needs_confirmation {
2964                                        element.rounded_none()
2965                                    } else {
2966                                        element.rounded_b_lg()
2967                                    }
2968                                })
2969                                .child(results_content),
2970                        )
2971                    })
2972                    .when(needs_confirmation, |this| {
2973                        this.child(
2974                            h_flex()
2975                                .py_1()
2976                                .pl_2()
2977                                .pr_1()
2978                                .gap_1()
2979                                .justify_between()
2980                                .bg(cx.theme().colors().editor_background)
2981                                .border_t_1()
2982                                .border_color(self.tool_card_border_color(cx))
2983                                .rounded_b_lg()
2984                                .child(
2985                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
2986                                )
2987                                .child(
2988                                    h_flex()
2989                                        .gap_0p5()
2990                                        .child({
2991                                            let tool_id = tool_use.id.clone();
2992                                            Button::new(
2993                                                "always-allow-tool-action",
2994                                                "Always Allow",
2995                                            )
2996                                            .label_size(LabelSize::Small)
2997                                            .icon(IconName::CheckDouble)
2998                                            .icon_position(IconPosition::Start)
2999                                            .icon_size(IconSize::Small)
3000                                            .icon_color(Color::Success)
3001                                            .tooltip(move |window, cx|  {
3002                                                Tooltip::with_meta(
3003                                                    "Never ask for permission",
3004                                                    None,
3005                                                    "Restore the original behavior in your Agent Panel settings",
3006                                                    window,
3007                                                    cx,
3008                                                )
3009                                            })
3010                                            .on_click(cx.listener(
3011                                                move |this, event, window, cx| {
3012                                                    if let Some(fs) = fs.clone() {
3013                                                        update_settings_file::<AssistantSettings>(
3014                                                            fs.clone(),
3015                                                            cx,
3016                                                            |settings, _| {
3017                                                                settings.set_always_allow_tool_actions(true);
3018                                                            },
3019                                                        );
3020                                                    }
3021                                                    this.handle_allow_tool(
3022                                                        tool_id.clone(),
3023                                                        event,
3024                                                        window,
3025                                                        cx,
3026                                                    )
3027                                                },
3028                                            ))
3029                                        })
3030                                        .child(ui::Divider::vertical())
3031                                        .child({
3032                                            let tool_id = tool_use.id.clone();
3033                                            Button::new("allow-tool-action", "Allow")
3034                                                .label_size(LabelSize::Small)
3035                                                .icon(IconName::Check)
3036                                                .icon_position(IconPosition::Start)
3037                                                .icon_size(IconSize::Small)
3038                                                .icon_color(Color::Success)
3039                                                .on_click(cx.listener(
3040                                                    move |this, event, window, cx| {
3041                                                        this.handle_allow_tool(
3042                                                            tool_id.clone(),
3043                                                            event,
3044                                                            window,
3045                                                            cx,
3046                                                        )
3047                                                    },
3048                                                ))
3049                                        })
3050                                        .child({
3051                                            let tool_id = tool_use.id.clone();
3052                                            let tool_name: Arc<str> = tool_use.name.into();
3053                                            Button::new("deny-tool", "Deny")
3054                                                .label_size(LabelSize::Small)
3055                                                .icon(IconName::Close)
3056                                                .icon_position(IconPosition::Start)
3057                                                .icon_size(IconSize::Small)
3058                                                .icon_color(Color::Error)
3059                                                .on_click(cx.listener(
3060                                                    move |this, event, window, cx| {
3061                                                        this.handle_deny_tool(
3062                                                            tool_id.clone(),
3063                                                            tool_name.clone(),
3064                                                            event,
3065                                                            window,
3066                                                            cx,
3067                                                        )
3068                                                    },
3069                                                ))
3070                                        }),
3071                                ),
3072                        )
3073                    })
3074            }
3075        }).into_any_element()
3076    }
3077
3078    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3079        let project_context = self.thread.read(cx).project_context();
3080        let project_context = project_context.borrow();
3081        let Some(project_context) = project_context.as_ref() else {
3082            return div().into_any();
3083        };
3084
3085        let user_rules_text = if project_context.user_rules.is_empty() {
3086            None
3087        } else if project_context.user_rules.len() == 1 {
3088            let user_rules = &project_context.user_rules[0];
3089
3090            match user_rules.title.as_ref() {
3091                Some(title) => Some(format!("Using \"{title}\" user rule")),
3092                None => Some("Using user rule".into()),
3093            }
3094        } else {
3095            Some(format!(
3096                "Using {} user rules",
3097                project_context.user_rules.len()
3098            ))
3099        };
3100
3101        let first_user_rules_id = project_context
3102            .user_rules
3103            .first()
3104            .map(|user_rules| user_rules.uuid.0);
3105
3106        let rules_files = project_context
3107            .worktrees
3108            .iter()
3109            .filter_map(|worktree| worktree.rules_file.as_ref())
3110            .collect::<Vec<_>>();
3111
3112        let rules_file_text = match rules_files.as_slice() {
3113            &[] => None,
3114            &[rules_file] => Some(format!(
3115                "Using project {:?} file",
3116                rules_file.path_in_worktree
3117            )),
3118            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3119        };
3120
3121        if user_rules_text.is_none() && rules_file_text.is_none() {
3122            return div().into_any();
3123        }
3124
3125        v_flex()
3126            .pt_2()
3127            .px_2p5()
3128            .gap_1()
3129            .when_some(user_rules_text, |parent, user_rules_text| {
3130                parent.child(
3131                    h_flex()
3132                        .w_full()
3133                        .child(
3134                            Icon::new(RULES_ICON)
3135                                .size(IconSize::XSmall)
3136                                .color(Color::Disabled),
3137                        )
3138                        .child(
3139                            Label::new(user_rules_text)
3140                                .size(LabelSize::XSmall)
3141                                .color(Color::Muted)
3142                                .truncate()
3143                                .buffer_font(cx)
3144                                .ml_1p5()
3145                                .mr_0p5(),
3146                        )
3147                        .child(
3148                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3149                                .shape(ui::IconButtonShape::Square)
3150                                .icon_size(IconSize::XSmall)
3151                                .icon_color(Color::Ignored)
3152                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3153                                .tooltip(Tooltip::text("View User Rules"))
3154                                .on_click(move |_event, window, cx| {
3155                                    window.dispatch_action(
3156                                        Box::new(OpenRulesLibrary {
3157                                            prompt_to_select: first_user_rules_id,
3158                                        }),
3159                                        cx,
3160                                    )
3161                                }),
3162                        ),
3163                )
3164            })
3165            .when_some(rules_file_text, |parent, rules_file_text| {
3166                parent.child(
3167                    h_flex()
3168                        .w_full()
3169                        .child(
3170                            Icon::new(IconName::File)
3171                                .size(IconSize::XSmall)
3172                                .color(Color::Disabled),
3173                        )
3174                        .child(
3175                            Label::new(rules_file_text)
3176                                .size(LabelSize::XSmall)
3177                                .color(Color::Muted)
3178                                .buffer_font(cx)
3179                                .ml_1p5()
3180                                .mr_0p5(),
3181                        )
3182                        .child(
3183                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3184                                .shape(ui::IconButtonShape::Square)
3185                                .icon_size(IconSize::XSmall)
3186                                .icon_color(Color::Ignored)
3187                                .on_click(cx.listener(Self::handle_open_rules))
3188                                .tooltip(Tooltip::text("View Rules")),
3189                        ),
3190                )
3191            })
3192            .into_any()
3193    }
3194
3195    fn handle_allow_tool(
3196        &mut self,
3197        tool_use_id: LanguageModelToolUseId,
3198        _: &ClickEvent,
3199        window: &mut Window,
3200        cx: &mut Context<Self>,
3201    ) {
3202        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3203            .thread
3204            .read(cx)
3205            .pending_tool(&tool_use_id)
3206            .map(|tool_use| tool_use.status.clone())
3207        {
3208            self.thread.update(cx, |thread, cx| {
3209                thread.run_tool(
3210                    c.tool_use_id.clone(),
3211                    c.ui_text.clone(),
3212                    c.input.clone(),
3213                    &c.messages,
3214                    c.tool.clone(),
3215                    Some(window.window_handle()),
3216                    cx,
3217                );
3218            });
3219        }
3220    }
3221
3222    fn handle_deny_tool(
3223        &mut self,
3224        tool_use_id: LanguageModelToolUseId,
3225        tool_name: Arc<str>,
3226        _: &ClickEvent,
3227        window: &mut Window,
3228        cx: &mut Context<Self>,
3229    ) {
3230        let window_handle = window.window_handle();
3231        self.thread.update(cx, |thread, cx| {
3232            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3233        });
3234    }
3235
3236    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3237        let project_context = self.thread.read(cx).project_context();
3238        let project_context = project_context.borrow();
3239        let Some(project_context) = project_context.as_ref() else {
3240            return;
3241        };
3242
3243        let project_entry_ids = project_context
3244            .worktrees
3245            .iter()
3246            .flat_map(|worktree| worktree.rules_file.as_ref())
3247            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3248            .collect::<Vec<_>>();
3249
3250        self.workspace
3251            .update(cx, move |workspace, cx| {
3252                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3253                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3254                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3255                let project = workspace.project().read(cx);
3256                let project_paths = project_entry_ids
3257                    .into_iter()
3258                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3259                    .collect::<Vec<_>>();
3260                for project_path in project_paths {
3261                    workspace
3262                        .open_path(project_path, None, true, window, cx)
3263                        .detach_and_log_err(cx);
3264                }
3265            })
3266            .ok();
3267    }
3268
3269    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3270        for window in self.notifications.drain(..) {
3271            window
3272                .update(cx, |_, window, _| {
3273                    window.remove_window();
3274                })
3275                .ok();
3276
3277            self.notification_subscriptions.remove(&window);
3278        }
3279    }
3280
3281    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3282        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3283            return None;
3284        }
3285
3286        Some(
3287            div()
3288                .occlude()
3289                .id("active-thread-scrollbar")
3290                .on_mouse_move(cx.listener(|_, _, _, cx| {
3291                    cx.notify();
3292                    cx.stop_propagation()
3293                }))
3294                .on_hover(|_, _, cx| {
3295                    cx.stop_propagation();
3296                })
3297                .on_any_mouse_down(|_, _, cx| {
3298                    cx.stop_propagation();
3299                })
3300                .on_mouse_up(
3301                    MouseButton::Left,
3302                    cx.listener(|_, _, _, cx| {
3303                        cx.stop_propagation();
3304                    }),
3305                )
3306                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3307                    cx.notify();
3308                }))
3309                .h_full()
3310                .absolute()
3311                .right_1()
3312                .top_1()
3313                .bottom_0()
3314                .w(px(12.))
3315                .cursor_default()
3316                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3317        )
3318    }
3319
3320    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3321        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3322        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3323            cx.background_executor()
3324                .timer(SCROLLBAR_SHOW_INTERVAL)
3325                .await;
3326            thread
3327                .update(cx, |thread, cx| {
3328                    if !thread.scrollbar_state.is_dragging() {
3329                        thread.show_scrollbar = false;
3330                        cx.notify();
3331                    }
3332                })
3333                .log_err();
3334        }))
3335    }
3336}
3337
3338pub enum ActiveThreadEvent {
3339    EditingMessageTokenCountChanged,
3340}
3341
3342impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3343
3344impl Render for ActiveThread {
3345    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3346        v_flex()
3347            .size_full()
3348            .relative()
3349            .on_mouse_move(cx.listener(|this, _, _, cx| {
3350                this.show_scrollbar = true;
3351                this.hide_scrollbar_later(cx);
3352                cx.notify();
3353            }))
3354            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3355                this.show_scrollbar = true;
3356                this.hide_scrollbar_later(cx);
3357                cx.notify();
3358            }))
3359            .on_mouse_up(
3360                MouseButton::Left,
3361                cx.listener(|this, _, _, cx| {
3362                    this.hide_scrollbar_later(cx);
3363                }),
3364            )
3365            .child(list(self.list_state.clone()).flex_grow())
3366            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3367                this.child(scrollbar)
3368            })
3369    }
3370}
3371
3372pub(crate) fn open_context(
3373    context: &AgentContextHandle,
3374    workspace: Entity<Workspace>,
3375    window: &mut Window,
3376    cx: &mut App,
3377) {
3378    match context {
3379        AgentContextHandle::File(file_context) => {
3380            if let Some(project_path) = file_context.project_path(cx) {
3381                workspace.update(cx, |workspace, cx| {
3382                    workspace
3383                        .open_path(project_path, None, true, window, cx)
3384                        .detach_and_log_err(cx);
3385                });
3386            }
3387        }
3388
3389        AgentContextHandle::Directory(directory_context) => {
3390            let entry_id = directory_context.entry_id;
3391            workspace.update(cx, |workspace, cx| {
3392                workspace.project().update(cx, |_project, cx| {
3393                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3394                })
3395            })
3396        }
3397
3398        AgentContextHandle::Symbol(symbol_context) => {
3399            let buffer = symbol_context.buffer.read(cx);
3400            if let Some(project_path) = buffer.project_path(cx) {
3401                let snapshot = buffer.snapshot();
3402                let target_position = symbol_context.range.start.to_point(&snapshot);
3403                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3404                    .detach();
3405            }
3406        }
3407
3408        AgentContextHandle::Selection(selection_context) => {
3409            let buffer = selection_context.buffer.read(cx);
3410            if let Some(project_path) = buffer.project_path(cx) {
3411                let snapshot = buffer.snapshot();
3412                let target_position = selection_context.range.start.to_point(&snapshot);
3413
3414                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3415                    .detach();
3416            }
3417        }
3418
3419        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3420            cx.open_url(&fetched_url_context.url);
3421        }
3422
3423        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3424            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3425                panel.update(cx, |panel, cx| {
3426                    let thread_id = thread_context.thread.read(cx).id().clone();
3427                    panel
3428                        .open_thread_by_id(&thread_id, window, cx)
3429                        .detach_and_log_err(cx)
3430                });
3431            }
3432        }),
3433
3434        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3435            Box::new(OpenRulesLibrary {
3436                prompt_to_select: Some(rules_context.prompt_id.0),
3437            }),
3438            cx,
3439        ),
3440
3441        AgentContextHandle::Image(_) => {}
3442    }
3443}
3444
3445fn open_editor_at_position(
3446    project_path: project::ProjectPath,
3447    target_position: Point,
3448    workspace: &Entity<Workspace>,
3449    window: &mut Window,
3450    cx: &mut App,
3451) -> Task<()> {
3452    let open_task = workspace.update(cx, |workspace, cx| {
3453        workspace.open_path(project_path, None, true, window, cx)
3454    });
3455    window.spawn(cx, async move |cx| {
3456        if let Some(active_editor) = open_task
3457            .await
3458            .log_err()
3459            .and_then(|item| item.downcast::<Editor>())
3460        {
3461            active_editor
3462                .downgrade()
3463                .update_in(cx, |editor, window, cx| {
3464                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3465                })
3466                .log_err();
3467        }
3468    })
3469}