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, Role, StopReason,
  33};
  34use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  35use markdown::{HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
  36use project::{ProjectEntryId, ProjectItem as _};
  37use rope::Point;
  38use settings::{Settings as _, update_settings_file};
  39use std::ffi::OsStr;
  40use std::path::Path;
  41use std::rc::Rc;
  42use std::sync::Arc;
  43use std::time::Duration;
  44use text::ToPoint;
  45use theme::ThemeSettings;
  46use ui::{
  47    Disclosure, IconButton, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize,
  48    Tooltip, prelude::*,
  49};
  50use util::ResultExt as _;
  51use util::markdown::MarkdownCodeBlock;
  52use workspace::Workspace;
  53use zed_actions::assistant::OpenRulesLibrary;
  54
  55pub struct ActiveThread {
  56    context_store: Entity<ContextStore>,
  57    language_registry: Arc<LanguageRegistry>,
  58    thread_store: Entity<ThreadStore>,
  59    thread: Entity<Thread>,
  60    workspace: WeakEntity<Workspace>,
  61    save_thread_task: Option<Task<()>>,
  62    messages: Vec<MessageId>,
  63    list_state: ListState,
  64    scrollbar_state: ScrollbarState,
  65    show_scrollbar: bool,
  66    hide_scrollbar_task: Option<Task<()>>,
  67    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  68    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  69    editing_message: Option<(MessageId, EditingMessageState)>,
  70    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  71    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  72    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  73    last_error: Option<ThreadError>,
  74    notifications: Vec<WindowHandle<AgentNotification>>,
  75    copied_code_block_ids: HashSet<(MessageId, usize)>,
  76    _subscriptions: Vec<Subscription>,
  77    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  78    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  79    _load_edited_message_context_task: Option<Task<()>>,
  80}
  81
  82struct RenderedMessage {
  83    language_registry: Arc<LanguageRegistry>,
  84    segments: Vec<RenderedMessageSegment>,
  85}
  86
  87#[derive(Clone)]
  88struct RenderedToolUse {
  89    label: Entity<Markdown>,
  90    input: Entity<Markdown>,
  91    output: Entity<Markdown>,
  92}
  93
  94impl RenderedMessage {
  95    fn from_segments(
  96        segments: &[MessageSegment],
  97        language_registry: Arc<LanguageRegistry>,
  98        cx: &mut App,
  99    ) -> Self {
 100        let mut this = Self {
 101            language_registry,
 102            segments: Vec::with_capacity(segments.len()),
 103        };
 104        for segment in segments {
 105            this.push_segment(segment, cx);
 106        }
 107        this
 108    }
 109
 110    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 111        if let Some(RenderedMessageSegment::Thinking {
 112            content,
 113            scroll_handle,
 114        }) = self.segments.last_mut()
 115        {
 116            content.update(cx, |markdown, cx| {
 117                markdown.append(text, cx);
 118            });
 119            scroll_handle.scroll_to_bottom();
 120        } else {
 121            self.segments.push(RenderedMessageSegment::Thinking {
 122                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 123                scroll_handle: ScrollHandle::default(),
 124            });
 125        }
 126    }
 127
 128    fn append_text(&mut self, text: &String, cx: &mut App) {
 129        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 130            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 131        } else {
 132            self.segments
 133                .push(RenderedMessageSegment::Text(parse_markdown(
 134                    SharedString::from(text),
 135                    self.language_registry.clone(),
 136                    cx,
 137                )));
 138        }
 139    }
 140
 141    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 142        match segment {
 143            MessageSegment::Thinking { text, .. } => {
 144                self.segments.push(RenderedMessageSegment::Thinking {
 145                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 146                    scroll_handle: ScrollHandle::default(),
 147                })
 148            }
 149            MessageSegment::Text(text) => {
 150                self.segments
 151                    .push(RenderedMessageSegment::Text(parse_markdown(
 152                        text.into(),
 153                        self.language_registry.clone(),
 154                        cx,
 155                    )))
 156            }
 157            MessageSegment::RedactedThinking(_) => {}
 158        };
 159    }
 160}
 161
 162enum RenderedMessageSegment {
 163    Thinking {
 164        content: Entity<Markdown>,
 165        scroll_handle: ScrollHandle,
 166    },
 167    Text(Entity<Markdown>),
 168}
 169
 170fn parse_markdown(
 171    text: SharedString,
 172    language_registry: Arc<LanguageRegistry>,
 173    cx: &mut App,
 174) -> Entity<Markdown> {
 175    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 176}
 177
 178fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 179    let theme_settings = ThemeSettings::get_global(cx);
 180    let colors = cx.theme().colors();
 181    let ui_font_size = TextSize::Default.rems(cx);
 182    let buffer_font_size = TextSize::Small.rems(cx);
 183    let mut text_style = window.text_style();
 184
 185    text_style.refine(&TextStyleRefinement {
 186        font_family: Some(theme_settings.ui_font.family.clone()),
 187        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 188        font_features: Some(theme_settings.ui_font.features.clone()),
 189        font_size: Some(ui_font_size.into()),
 190        color: Some(cx.theme().colors().text),
 191        ..Default::default()
 192    });
 193
 194    MarkdownStyle {
 195        base_text_style: text_style.clone(),
 196        syntax: cx.theme().syntax().clone(),
 197        selection_background_color: cx.theme().players().local().selection,
 198        code_block_overflow_x_scroll: true,
 199        table_overflow_x_scroll: true,
 200        heading_level_styles: Some(HeadingLevelStyles {
 201            h1: Some(TextStyleRefinement {
 202                font_size: Some(rems(1.15).into()),
 203                ..Default::default()
 204            }),
 205            h2: Some(TextStyleRefinement {
 206                font_size: Some(rems(1.1).into()),
 207                ..Default::default()
 208            }),
 209            h3: Some(TextStyleRefinement {
 210                font_size: Some(rems(1.05).into()),
 211                ..Default::default()
 212            }),
 213            h4: Some(TextStyleRefinement {
 214                font_size: Some(rems(1.).into()),
 215                ..Default::default()
 216            }),
 217            h5: Some(TextStyleRefinement {
 218                font_size: Some(rems(0.95).into()),
 219                ..Default::default()
 220            }),
 221            h6: Some(TextStyleRefinement {
 222                font_size: Some(rems(0.875).into()),
 223                ..Default::default()
 224            }),
 225        }),
 226        code_block: StyleRefinement {
 227            padding: EdgesRefinement {
 228                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 229                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 230                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 231                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 232            },
 233            background: Some(colors.editor_background.into()),
 234            text: Some(TextStyleRefinement {
 235                font_family: Some(theme_settings.buffer_font.family.clone()),
 236                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 237                font_features: Some(theme_settings.buffer_font.features.clone()),
 238                font_size: Some(buffer_font_size.into()),
 239                ..Default::default()
 240            }),
 241            ..Default::default()
 242        },
 243        inline_code: TextStyleRefinement {
 244            font_family: Some(theme_settings.buffer_font.family.clone()),
 245            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 246            font_features: Some(theme_settings.buffer_font.features.clone()),
 247            font_size: Some(buffer_font_size.into()),
 248            background_color: Some(colors.editor_foreground.opacity(0.08)),
 249            ..Default::default()
 250        },
 251        link: TextStyleRefinement {
 252            background_color: Some(colors.editor_foreground.opacity(0.025)),
 253            underline: Some(UnderlineStyle {
 254                color: Some(colors.text_accent.opacity(0.5)),
 255                thickness: px(1.),
 256                ..Default::default()
 257            }),
 258            ..Default::default()
 259        },
 260        link_callback: Some(Rc::new(move |url, cx| {
 261            if MentionLink::is_valid(url) {
 262                let colors = cx.theme().colors();
 263                Some(TextStyleRefinement {
 264                    background_color: Some(colors.element_background),
 265                    ..Default::default()
 266                })
 267            } else {
 268                None
 269            }
 270        })),
 271        ..Default::default()
 272    }
 273}
 274
 275fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 276    let theme_settings = ThemeSettings::get_global(cx);
 277    let colors = cx.theme().colors();
 278    let ui_font_size = TextSize::Default.rems(cx);
 279    let buffer_font_size = TextSize::Small.rems(cx);
 280    let mut text_style = window.text_style();
 281
 282    text_style.refine(&TextStyleRefinement {
 283        font_family: Some(theme_settings.ui_font.family.clone()),
 284        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 285        font_features: Some(theme_settings.ui_font.features.clone()),
 286        font_size: Some(ui_font_size.into()),
 287        color: Some(cx.theme().colors().text),
 288        ..Default::default()
 289    });
 290
 291    MarkdownStyle {
 292        base_text_style: text_style,
 293        syntax: cx.theme().syntax().clone(),
 294        selection_background_color: cx.theme().players().local().selection,
 295        code_block_overflow_x_scroll: true,
 296        code_block: StyleRefinement {
 297            margin: EdgesRefinement::default(),
 298            padding: EdgesRefinement::default(),
 299            background: Some(colors.editor_background.into()),
 300            border_color: None,
 301            border_widths: EdgesRefinement::default(),
 302            text: Some(TextStyleRefinement {
 303                font_family: Some(theme_settings.buffer_font.family.clone()),
 304                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 305                font_features: Some(theme_settings.buffer_font.features.clone()),
 306                font_size: Some(buffer_font_size.into()),
 307                ..Default::default()
 308            }),
 309            ..Default::default()
 310        },
 311        inline_code: TextStyleRefinement {
 312            font_family: Some(theme_settings.buffer_font.family.clone()),
 313            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 314            font_features: Some(theme_settings.buffer_font.features.clone()),
 315            font_size: Some(TextSize::XSmall.rems(cx).into()),
 316            ..Default::default()
 317        },
 318        heading: StyleRefinement {
 319            text: Some(TextStyleRefinement {
 320                font_size: Some(ui_font_size.into()),
 321                ..Default::default()
 322            }),
 323            ..Default::default()
 324        },
 325        ..Default::default()
 326    }
 327}
 328
 329const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 10;
 330
 331fn render_markdown_code_block(
 332    message_id: MessageId,
 333    ix: usize,
 334    kind: &CodeBlockKind,
 335    parsed_markdown: &ParsedMarkdown,
 336    metadata: CodeBlockMetadata,
 337    active_thread: Entity<ActiveThread>,
 338    workspace: WeakEntity<Workspace>,
 339    _window: &Window,
 340    cx: &App,
 341) -> Div {
 342    let label = match kind {
 343        CodeBlockKind::Indented => None,
 344        CodeBlockKind::Fenced => Some(
 345            h_flex()
 346                .gap_1()
 347                .child(
 348                    Icon::new(IconName::Code)
 349                        .color(Color::Muted)
 350                        .size(IconSize::XSmall),
 351                )
 352                .child(Label::new("untitled").size(LabelSize::Small))
 353                .into_any_element(),
 354        ),
 355        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 356            parsed_markdown.languages_by_name.get(raw_language_name),
 357            raw_language_name.clone(),
 358            cx,
 359        )),
 360        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 361            // We tell the model to use /dev/null for the path instead of using ```language
 362            // because otherwise it consistently fails to use code citations.
 363            if path_range.path.starts_with("/dev/null") {
 364                let ext = path_range
 365                    .path
 366                    .extension()
 367                    .and_then(OsStr::to_str)
 368                    .map(|str| SharedString::new(str.to_string()))
 369                    .unwrap_or_default();
 370
 371                render_code_language(
 372                    parsed_markdown
 373                        .languages_by_path
 374                        .get(&path_range.path)
 375                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 376                    ext,
 377                    cx,
 378                )
 379            } else {
 380                let content = if let Some(parent) = path_range.path.parent() {
 381                    h_flex()
 382                        .ml_1()
 383                        .gap_1()
 384                        .child(
 385                            Label::new(file_name.to_string_lossy().to_string())
 386                                .size(LabelSize::Small),
 387                        )
 388                        .child(
 389                            Label::new(parent.to_string_lossy().to_string())
 390                                .color(Color::Muted)
 391                                .size(LabelSize::Small),
 392                        )
 393                        .into_any_element()
 394                } else {
 395                    Label::new(path_range.path.to_string_lossy().to_string())
 396                        .size(LabelSize::Small)
 397                        .ml_1()
 398                        .into_any_element()
 399                };
 400
 401                h_flex()
 402                    .id(("code-block-header-label", ix))
 403                    .w_full()
 404                    .max_w_full()
 405                    .px_1()
 406                    .gap_0p5()
 407                    .cursor_pointer()
 408                    .rounded_sm()
 409                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 410                    .tooltip(Tooltip::text("Jump to File"))
 411                    .child(
 412                        h_flex()
 413                            .gap_0p5()
 414                            .children(
 415                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 416                                    .map(Icon::from_path)
 417                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 418                            )
 419                            .child(content)
 420                            .child(
 421                                Icon::new(IconName::ArrowUpRight)
 422                                    .size(IconSize::XSmall)
 423                                    .color(Color::Ignored),
 424                            ),
 425                    )
 426                    .on_click({
 427                        let path_range = path_range.clone();
 428                        move |_, window, cx| {
 429                            workspace
 430                                .update(cx, {
 431                                    |workspace, cx| {
 432                                        let Some(project_path) = workspace
 433                                            .project()
 434                                            .read(cx)
 435                                            .find_project_path(&path_range.path, cx)
 436                                        else {
 437                                            return;
 438                                        };
 439                                        let Some(target) = path_range.range.as_ref().map(|range| {
 440                                            Point::new(
 441                                                // Line number is 1-based
 442                                                range.start.line.saturating_sub(1),
 443                                                range.start.col.unwrap_or(0),
 444                                            )
 445                                        }) else {
 446                                            return;
 447                                        };
 448                                        let open_task = workspace.open_path(
 449                                            project_path,
 450                                            None,
 451                                            true,
 452                                            window,
 453                                            cx,
 454                                        );
 455                                        window
 456                                            .spawn(cx, async move |cx| {
 457                                                let item = open_task.await?;
 458                                                if let Some(active_editor) =
 459                                                    item.downcast::<Editor>()
 460                                                {
 461                                                    active_editor
 462                                                        .update_in(cx, |editor, window, cx| {
 463                                                            editor.go_to_singleton_buffer_point(
 464                                                                target, window, cx,
 465                                                            );
 466                                                        })
 467                                                        .ok();
 468                                                }
 469                                                anyhow::Ok(())
 470                                            })
 471                                            .detach_and_log_err(cx);
 472                                    }
 473                                })
 474                                .ok();
 475                        }
 476                    })
 477                    .into_any_element()
 478            }
 479        }),
 480    };
 481
 482    let codeblock_was_copied = active_thread
 483        .read(cx)
 484        .copied_code_block_ids
 485        .contains(&(message_id, ix));
 486
 487    let is_expanded = active_thread
 488        .read(cx)
 489        .expanded_code_blocks
 490        .get(&(message_id, ix))
 491        .copied()
 492        .unwrap_or(true);
 493
 494    let codeblock_header_bg = cx
 495        .theme()
 496        .colors()
 497        .element_background
 498        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 499
 500    let codeblock_header = h_flex()
 501        .py_1()
 502        .pl_1p5()
 503        .pr_1()
 504        .gap_1()
 505        .justify_between()
 506        .border_b_1()
 507        .border_color(cx.theme().colors().border.opacity(0.6))
 508        .bg(codeblock_header_bg)
 509        .rounded_t_md()
 510        .children(label)
 511        .child(
 512            h_flex()
 513                .visible_on_hover("codeblock_container")
 514                .gap_1()
 515                .child(
 516                    IconButton::new(
 517                        ("copy-markdown-code", ix),
 518                        if codeblock_was_copied {
 519                            IconName::Check
 520                        } else {
 521                            IconName::Copy
 522                        },
 523                    )
 524                    .icon_color(Color::Muted)
 525                    .shape(ui::IconButtonShape::Square)
 526                    .tooltip(Tooltip::text("Copy Code"))
 527                    .on_click({
 528                        let active_thread = active_thread.clone();
 529                        let parsed_markdown = parsed_markdown.clone();
 530                        let code_block_range = metadata.content_range.clone();
 531                        move |_event, _window, cx| {
 532                            active_thread.update(cx, |this, cx| {
 533                                this.copied_code_block_ids.insert((message_id, ix));
 534
 535                                let code =
 536                                    parsed_markdown.source()[code_block_range.clone()].to_string();
 537                                cx.write_to_clipboard(ClipboardItem::new_string(code));
 538
 539                                cx.spawn(async move |this, cx| {
 540                                    cx.background_executor().timer(Duration::from_secs(2)).await;
 541
 542                                    cx.update(|cx| {
 543                                        this.update(cx, |this, cx| {
 544                                            this.copied_code_block_ids.remove(&(message_id, ix));
 545                                            cx.notify();
 546                                        })
 547                                    })
 548                                    .ok();
 549                                })
 550                                .detach();
 551                            });
 552                        }
 553                    }),
 554                )
 555                .when(
 556                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 557                    |header| {
 558                        header.child(
 559                            IconButton::new(
 560                                ("expand-collapse-code", ix),
 561                                if is_expanded {
 562                                    IconName::ChevronUp
 563                                } else {
 564                                    IconName::ChevronDown
 565                                },
 566                            )
 567                            .icon_color(Color::Muted)
 568                            .shape(ui::IconButtonShape::Square)
 569                            .tooltip(Tooltip::text(if is_expanded {
 570                                "Collapse Code"
 571                            } else {
 572                                "Expand Code"
 573                            }))
 574                            .on_click({
 575                                let active_thread = active_thread.clone();
 576                                move |_event, _window, cx| {
 577                                    active_thread.update(cx, |this, cx| {
 578                                        let is_expanded = this
 579                                            .expanded_code_blocks
 580                                            .entry((message_id, ix))
 581                                            .or_insert(true);
 582                                        *is_expanded = !*is_expanded;
 583                                        cx.notify();
 584                                    });
 585                                }
 586                            }),
 587                        )
 588                    },
 589                ),
 590        );
 591
 592    v_flex()
 593        .group("codeblock_container")
 594        .my_2()
 595        .overflow_hidden()
 596        .rounded_lg()
 597        .border_1()
 598        .border_color(cx.theme().colors().border.opacity(0.6))
 599        .bg(cx.theme().colors().editor_background)
 600        .child(codeblock_header)
 601        .when(
 602            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 603            |this| {
 604                if is_expanded {
 605                    this.h_full()
 606                } else {
 607                    this.max_h_80()
 608                }
 609            },
 610        )
 611}
 612
 613fn render_code_language(
 614    language: Option<&Arc<Language>>,
 615    name_fallback: SharedString,
 616    cx: &App,
 617) -> AnyElement {
 618    let icon_path = language.and_then(|language| {
 619        language
 620            .config()
 621            .matcher
 622            .path_suffixes
 623            .iter()
 624            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 625            .map(Icon::from_path)
 626    });
 627
 628    let language_label = language
 629        .map(|language| language.name().into())
 630        .unwrap_or(name_fallback);
 631
 632    h_flex()
 633        .gap_1()
 634        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::Small)))
 635        .child(Label::new(language_label).size(LabelSize::Small))
 636        .into_any_element()
 637}
 638
 639fn open_markdown_link(
 640    text: SharedString,
 641    workspace: WeakEntity<Workspace>,
 642    window: &mut Window,
 643    cx: &mut App,
 644) {
 645    let Some(workspace) = workspace.upgrade() else {
 646        cx.open_url(&text);
 647        return;
 648    };
 649
 650    match MentionLink::try_parse(&text, &workspace, cx) {
 651        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 652            if entry.is_dir() {
 653                workspace.project().update(cx, |_, cx| {
 654                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 655                })
 656            } else {
 657                workspace
 658                    .open_path(path, None, true, window, cx)
 659                    .detach_and_log_err(cx);
 660            }
 661        }),
 662        Some(MentionLink::Symbol(path, symbol_name)) => {
 663            let open_task = workspace.update(cx, |workspace, cx| {
 664                workspace.open_path(path, None, true, window, cx)
 665            });
 666            window
 667                .spawn(cx, async move |cx| {
 668                    let active_editor = open_task
 669                        .await?
 670                        .downcast::<Editor>()
 671                        .context("Item is not an editor")?;
 672                    active_editor.update_in(cx, |editor, window, cx| {
 673                        let symbol_range = editor
 674                            .buffer()
 675                            .read(cx)
 676                            .snapshot(cx)
 677                            .outline(None)
 678                            .and_then(|outline| {
 679                                outline
 680                                    .find_most_similar(&symbol_name)
 681                                    .map(|(_, item)| item.range.clone())
 682                            })
 683                            .context("Could not find matching symbol")?;
 684
 685                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 686                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 687                        });
 688                        anyhow::Ok(())
 689                    })
 690                })
 691                .detach_and_log_err(cx);
 692        }
 693        Some(MentionLink::Selection(path, line_range)) => {
 694            let open_task = workspace.update(cx, |workspace, cx| {
 695                workspace.open_path(path, None, true, window, cx)
 696            });
 697            window
 698                .spawn(cx, async move |cx| {
 699                    let active_editor = open_task
 700                        .await?
 701                        .downcast::<Editor>()
 702                        .context("Item is not an editor")?;
 703                    active_editor.update_in(cx, |editor, window, cx| {
 704                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 705                            s.select_ranges([Point::new(line_range.start as u32, 0)
 706                                ..Point::new(line_range.start as u32, 0)])
 707                        });
 708                        anyhow::Ok(())
 709                    })
 710                })
 711                .detach_and_log_err(cx);
 712        }
 713        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 714            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 715                panel.update(cx, |panel, cx| {
 716                    panel
 717                        .open_thread_by_id(&thread_id, window, cx)
 718                        .detach_and_log_err(cx)
 719                });
 720            }
 721        }),
 722        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 723        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
 724            Box::new(OpenRulesLibrary {
 725                prompt_to_select: Some(prompt_id.0),
 726            }),
 727            cx,
 728        ),
 729        None => cx.open_url(&text),
 730    }
 731}
 732
 733struct EditingMessageState {
 734    editor: Entity<Editor>,
 735    context_strip: Entity<ContextStrip>,
 736    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 737    last_estimated_token_count: Option<usize>,
 738    _subscriptions: [Subscription; 2],
 739    _update_token_count_task: Option<Task<()>>,
 740}
 741
 742impl ActiveThread {
 743    pub fn new(
 744        thread: Entity<Thread>,
 745        thread_store: Entity<ThreadStore>,
 746        context_store: Entity<ContextStore>,
 747        language_registry: Arc<LanguageRegistry>,
 748        workspace: WeakEntity<Workspace>,
 749        window: &mut Window,
 750        cx: &mut Context<Self>,
 751    ) -> Self {
 752        let subscriptions = vec![
 753            cx.observe(&thread, |_, _, cx| cx.notify()),
 754            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 755            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 756        ];
 757
 758        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 759            let this = cx.entity().downgrade();
 760            move |ix, window: &mut Window, cx: &mut App| {
 761                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 762                    .unwrap()
 763            }
 764        });
 765        let mut this = Self {
 766            language_registry,
 767            thread_store,
 768            context_store,
 769            thread: thread.clone(),
 770            workspace,
 771            save_thread_task: None,
 772            messages: Vec::new(),
 773            rendered_messages_by_id: HashMap::default(),
 774            rendered_tool_uses: HashMap::default(),
 775            expanded_tool_uses: HashMap::default(),
 776            expanded_thinking_segments: HashMap::default(),
 777            expanded_code_blocks: HashMap::default(),
 778            list_state: list_state.clone(),
 779            scrollbar_state: ScrollbarState::new(list_state),
 780            show_scrollbar: false,
 781            hide_scrollbar_task: None,
 782            editing_message: None,
 783            last_error: None,
 784            copied_code_block_ids: HashSet::default(),
 785            notifications: Vec::new(),
 786            _subscriptions: subscriptions,
 787            notification_subscriptions: HashMap::default(),
 788            open_feedback_editors: HashMap::default(),
 789            _load_edited_message_context_task: None,
 790        };
 791
 792        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 793            this.push_message(&message.id, &message.segments, window, cx);
 794
 795            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 796                this.render_tool_use_markdown(
 797                    tool_use.id.clone(),
 798                    tool_use.ui_text.clone(),
 799                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 800                    tool_use.status.text(),
 801                    cx,
 802                );
 803            }
 804        }
 805
 806        this
 807    }
 808
 809    pub fn thread(&self) -> &Entity<Thread> {
 810        &self.thread
 811    }
 812
 813    pub fn is_empty(&self) -> bool {
 814        self.messages.is_empty()
 815    }
 816
 817    pub fn summary(&self, cx: &App) -> Option<SharedString> {
 818        self.thread.read(cx).summary()
 819    }
 820
 821    pub fn summary_or_default(&self, cx: &App) -> SharedString {
 822        self.thread.read(cx).summary_or_default()
 823    }
 824
 825    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 826        self.last_error.take();
 827        self.thread.update(cx, |thread, cx| {
 828            thread.cancel_last_completion(Some(window.window_handle()), cx)
 829        })
 830    }
 831
 832    pub fn last_error(&self) -> Option<ThreadError> {
 833        self.last_error.clone()
 834    }
 835
 836    pub fn clear_last_error(&mut self) {
 837        self.last_error.take();
 838    }
 839
 840    /// Returns the editing message id and the estimated token count in the content
 841    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
 842        self.editing_message
 843            .as_ref()
 844            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 845    }
 846
 847    fn push_message(
 848        &mut self,
 849        id: &MessageId,
 850        segments: &[MessageSegment],
 851        _window: &mut Window,
 852        cx: &mut Context<Self>,
 853    ) {
 854        let old_len = self.messages.len();
 855        self.messages.push(*id);
 856        self.list_state.splice(old_len..old_len, 1);
 857
 858        let rendered_message =
 859            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 860        self.rendered_messages_by_id.insert(*id, rendered_message);
 861    }
 862
 863    fn edited_message(
 864        &mut self,
 865        id: &MessageId,
 866        segments: &[MessageSegment],
 867        _window: &mut Window,
 868        cx: &mut Context<Self>,
 869    ) {
 870        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 871            return;
 872        };
 873        self.list_state.splice(index..index + 1, 1);
 874        let rendered_message =
 875            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 876        self.rendered_messages_by_id.insert(*id, rendered_message);
 877    }
 878
 879    fn deleted_message(&mut self, id: &MessageId) {
 880        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 881            return;
 882        };
 883        self.messages.remove(index);
 884        self.list_state.splice(index..index + 1, 0);
 885        self.rendered_messages_by_id.remove(id);
 886    }
 887
 888    fn render_tool_use_markdown(
 889        &mut self,
 890        tool_use_id: LanguageModelToolUseId,
 891        tool_label: impl Into<SharedString>,
 892        tool_input: &str,
 893        tool_output: SharedString,
 894        cx: &mut Context<Self>,
 895    ) {
 896        let rendered = self
 897            .rendered_tool_uses
 898            .entry(tool_use_id.clone())
 899            .or_insert_with(|| RenderedToolUse {
 900                label: cx.new(|cx| {
 901                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 902                }),
 903                input: cx.new(|cx| {
 904                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 905                }),
 906                output: cx.new(|cx| {
 907                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 908                }),
 909            });
 910
 911        rendered.label.update(cx, |this, cx| {
 912            this.replace(tool_label, cx);
 913        });
 914        rendered.input.update(cx, |this, cx| {
 915            this.replace(
 916                MarkdownCodeBlock {
 917                    tag: "json",
 918                    text: tool_input,
 919                }
 920                .to_string(),
 921                cx,
 922            );
 923        });
 924        rendered.output.update(cx, |this, cx| {
 925            this.replace(tool_output, cx);
 926        });
 927    }
 928
 929    fn handle_thread_event(
 930        &mut self,
 931        _thread: &Entity<Thread>,
 932        event: &ThreadEvent,
 933        window: &mut Window,
 934        cx: &mut Context<Self>,
 935    ) {
 936        match event {
 937            ThreadEvent::CancelEditing => {
 938                if self.editing_message.is_some() {
 939                    self.cancel_editing_message(&menu::Cancel, window, cx);
 940                }
 941            }
 942            ThreadEvent::ShowError(error) => {
 943                self.last_error = Some(error.clone());
 944            }
 945            ThreadEvent::NewRequest | ThreadEvent::CompletionCanceled => {
 946                cx.notify();
 947            }
 948            ThreadEvent::StreamedCompletion
 949            | ThreadEvent::SummaryGenerated
 950            | ThreadEvent::SummaryChanged => {
 951                self.save_thread(cx);
 952            }
 953            ThreadEvent::Stopped(reason) => match reason {
 954                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 955                    let thread = self.thread.read(cx);
 956                    self.show_notification(
 957                        if thread.used_tools_since_last_user_message() {
 958                            "Finished running tools"
 959                        } else {
 960                            "New message"
 961                        },
 962                        IconName::ZedAssistant,
 963                        window,
 964                        cx,
 965                    );
 966                }
 967                _ => {}
 968            },
 969            ThreadEvent::ToolConfirmationNeeded => {
 970                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 971            }
 972            ThreadEvent::StreamedAssistantText(message_id, text) => {
 973                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 974                    rendered_message.append_text(text, cx);
 975                }
 976            }
 977            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
 978                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
 979                    rendered_message.append_thinking(text, cx);
 980                }
 981            }
 982            ThreadEvent::MessageAdded(message_id) => {
 983                if let Some(message_segments) = self
 984                    .thread
 985                    .read(cx)
 986                    .message(*message_id)
 987                    .map(|message| message.segments.clone())
 988                {
 989                    self.push_message(message_id, &message_segments, window, cx);
 990                }
 991
 992                self.save_thread(cx);
 993                cx.notify();
 994            }
 995            ThreadEvent::MessageEdited(message_id) => {
 996                if let Some(message_segments) = self
 997                    .thread
 998                    .read(cx)
 999                    .message(*message_id)
1000                    .map(|message| message.segments.clone())
1001                {
1002                    self.edited_message(message_id, &message_segments, window, cx);
1003                }
1004
1005                self.save_thread(cx);
1006                cx.notify();
1007            }
1008            ThreadEvent::MessageDeleted(message_id) => {
1009                self.deleted_message(message_id);
1010                self.save_thread(cx);
1011                cx.notify();
1012            }
1013            ThreadEvent::UsePendingTools { tool_uses } => {
1014                for tool_use in tool_uses {
1015                    self.render_tool_use_markdown(
1016                        tool_use.id.clone(),
1017                        tool_use.ui_text.clone(),
1018                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1019                        "".into(),
1020                        cx,
1021                    );
1022                }
1023            }
1024            ThreadEvent::StreamedToolUse {
1025                tool_use_id,
1026                ui_text,
1027                input,
1028            } => {
1029                self.render_tool_use_markdown(
1030                    tool_use_id.clone(),
1031                    ui_text.clone(),
1032                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1033                    "".into(),
1034                    cx,
1035                );
1036            }
1037            ThreadEvent::ToolFinished {
1038                pending_tool_use, ..
1039            } => {
1040                if let Some(tool_use) = pending_tool_use {
1041                    self.render_tool_use_markdown(
1042                        tool_use.id.clone(),
1043                        tool_use.ui_text.clone(),
1044                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1045                        self.thread
1046                            .read(cx)
1047                            .output_for_tool(&tool_use.id)
1048                            .map(|output| output.clone().into())
1049                            .unwrap_or("".into()),
1050                        cx,
1051                    );
1052                }
1053            }
1054            ThreadEvent::CheckpointChanged => cx.notify(),
1055            ThreadEvent::ReceivedTextChunk => {}
1056            ThreadEvent::InvalidToolInput {
1057                tool_use_id,
1058                ui_text,
1059                invalid_input_json,
1060            } => {
1061                self.render_tool_use_markdown(
1062                    tool_use_id.clone(),
1063                    ui_text,
1064                    invalid_input_json,
1065                    self.thread
1066                        .read(cx)
1067                        .output_for_tool(tool_use_id)
1068                        .map(|output| output.clone().into())
1069                        .unwrap_or("".into()),
1070                    cx,
1071                );
1072            }
1073        }
1074    }
1075
1076    fn handle_rules_loading_error(
1077        &mut self,
1078        _thread_store: Entity<ThreadStore>,
1079        error: &RulesLoadingError,
1080        cx: &mut Context<Self>,
1081    ) {
1082        self.last_error = Some(ThreadError::Message {
1083            header: "Error loading rules file".into(),
1084            message: error.message.clone(),
1085        });
1086        cx.notify();
1087    }
1088
1089    fn show_notification(
1090        &mut self,
1091        caption: impl Into<SharedString>,
1092        icon: IconName,
1093        window: &mut Window,
1094        cx: &mut Context<ActiveThread>,
1095    ) {
1096        if window.is_window_active() || !self.notifications.is_empty() {
1097            return;
1098        }
1099
1100        let title = self
1101            .thread
1102            .read(cx)
1103            .summary()
1104            .unwrap_or("Agent Panel".into());
1105
1106        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1107            NotifyWhenAgentWaiting::PrimaryScreen => {
1108                if let Some(primary) = cx.primary_display() {
1109                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1110                }
1111            }
1112            NotifyWhenAgentWaiting::AllScreens => {
1113                let caption = caption.into();
1114                for screen in cx.displays() {
1115                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1116                }
1117            }
1118            NotifyWhenAgentWaiting::Never => {
1119                // Don't show anything
1120            }
1121        }
1122    }
1123
1124    fn pop_up(
1125        &mut self,
1126        icon: IconName,
1127        caption: SharedString,
1128        title: SharedString,
1129        window: &mut Window,
1130        screen: Rc<dyn PlatformDisplay>,
1131        cx: &mut Context<'_, ActiveThread>,
1132    ) {
1133        let options = AgentNotification::window_options(screen, cx);
1134
1135        let project_name = self.workspace.upgrade().and_then(|workspace| {
1136            workspace
1137                .read(cx)
1138                .project()
1139                .read(cx)
1140                .visible_worktrees(cx)
1141                .next()
1142                .map(|worktree| worktree.read(cx).root_name().to_string())
1143        });
1144
1145        if let Some(screen_window) = cx
1146            .open_window(options, |_, cx| {
1147                cx.new(|_| {
1148                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1149                })
1150            })
1151            .log_err()
1152        {
1153            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1154                self.notification_subscriptions
1155                    .entry(screen_window)
1156                    .or_insert_with(Vec::new)
1157                    .push(cx.subscribe_in(&pop_up, window, {
1158                        |this, _, event, window, cx| match event {
1159                            AgentNotificationEvent::Accepted => {
1160                                let handle = window.window_handle();
1161                                cx.activate(true);
1162
1163                                let workspace_handle = this.workspace.clone();
1164
1165                                // If there are multiple Zed windows, activate the correct one.
1166                                cx.defer(move |cx| {
1167                                    handle
1168                                        .update(cx, |_view, window, _cx| {
1169                                            window.activate_window();
1170
1171                                            if let Some(workspace) = workspace_handle.upgrade() {
1172                                                workspace.update(_cx, |workspace, cx| {
1173                                                    workspace
1174                                                        .focus_panel::<AssistantPanel>(window, cx);
1175                                                });
1176                                            }
1177                                        })
1178                                        .log_err();
1179                                });
1180
1181                                this.dismiss_notifications(cx);
1182                            }
1183                            AgentNotificationEvent::Dismissed => {
1184                                this.dismiss_notifications(cx);
1185                            }
1186                        }
1187                    }));
1188
1189                self.notifications.push(screen_window);
1190
1191                // If the user manually refocuses the original window, dismiss the popup.
1192                self.notification_subscriptions
1193                    .entry(screen_window)
1194                    .or_insert_with(Vec::new)
1195                    .push({
1196                        let pop_up_weak = pop_up.downgrade();
1197
1198                        cx.observe_window_activation(window, move |_, window, cx| {
1199                            if window.is_window_active() {
1200                                if let Some(pop_up) = pop_up_weak.upgrade() {
1201                                    pop_up.update(cx, |_, cx| {
1202                                        cx.emit(AgentNotificationEvent::Dismissed);
1203                                    });
1204                                }
1205                            }
1206                        })
1207                    });
1208            }
1209        }
1210    }
1211
1212    /// Spawns a task to save the active thread.
1213    ///
1214    /// Only one task to save the thread will be in flight at a time.
1215    fn save_thread(&mut self, cx: &mut Context<Self>) {
1216        let thread = self.thread.clone();
1217        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1218            let task = this
1219                .update(cx, |this, cx| {
1220                    this.thread_store
1221                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1222                })
1223                .ok();
1224
1225            if let Some(task) = task {
1226                task.await.log_err();
1227            }
1228        }));
1229    }
1230
1231    fn start_editing_message(
1232        &mut self,
1233        message_id: MessageId,
1234        message_segments: &[MessageSegment],
1235        window: &mut Window,
1236        cx: &mut Context<Self>,
1237    ) {
1238        // User message should always consist of a single text segment,
1239        // therefore we can skip returning early if it's not a text segment.
1240        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1241            return;
1242        };
1243
1244        let editor = crate::message_editor::create_editor(
1245            self.workspace.clone(),
1246            self.context_store.downgrade(),
1247            self.thread_store.downgrade(),
1248            window,
1249            cx,
1250        );
1251        editor.update(cx, |editor, cx| {
1252            editor.set_text(message_text.clone(), window, cx);
1253            editor.focus_handle(cx).focus(window);
1254            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1255        });
1256        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1257            EditorEvent::BufferEdited => {
1258                this.update_editing_message_token_count(true, cx);
1259            }
1260            _ => {}
1261        });
1262
1263        let context_picker_menu_handle = PopoverMenuHandle::default();
1264        let context_strip = cx.new(|cx| {
1265            ContextStrip::new(
1266                self.context_store.clone(),
1267                self.workspace.clone(),
1268                Some(self.thread_store.downgrade()),
1269                context_picker_menu_handle.clone(),
1270                SuggestContextKind::File,
1271                window,
1272                cx,
1273            )
1274        });
1275
1276        let context_strip_subscription =
1277            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1278
1279        self.editing_message = Some((
1280            message_id,
1281            EditingMessageState {
1282                editor: editor.clone(),
1283                context_strip,
1284                context_picker_menu_handle,
1285                last_estimated_token_count: None,
1286                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1287                _update_token_count_task: None,
1288            },
1289        ));
1290        self.update_editing_message_token_count(false, cx);
1291        cx.notify();
1292    }
1293
1294    fn handle_context_strip_event(
1295        &mut self,
1296        _context_strip: &Entity<ContextStrip>,
1297        event: &ContextStripEvent,
1298        window: &mut Window,
1299        cx: &mut Context<Self>,
1300    ) {
1301        if let Some((_, state)) = self.editing_message.as_ref() {
1302            match event {
1303                ContextStripEvent::PickerDismissed
1304                | ContextStripEvent::BlurredEmpty
1305                | ContextStripEvent::BlurredDown => {
1306                    let editor_focus_handle = state.editor.focus_handle(cx);
1307                    window.focus(&editor_focus_handle);
1308                }
1309                ContextStripEvent::BlurredUp => {}
1310            }
1311        }
1312    }
1313
1314    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1315        let Some((message_id, state)) = self.editing_message.as_mut() else {
1316            return;
1317        };
1318
1319        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1320        state._update_token_count_task.take();
1321
1322        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1323            state.last_estimated_token_count.take();
1324            return;
1325        };
1326
1327        let editor = state.editor.clone();
1328        let thread = self.thread.clone();
1329        let message_id = *message_id;
1330
1331        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1332            if debounce {
1333                cx.background_executor()
1334                    .timer(Duration::from_millis(200))
1335                    .await;
1336            }
1337
1338            let token_count = if let Some(task) = cx
1339                .update(|cx| {
1340                    let Some(message) = thread.read(cx).message(message_id) else {
1341                        log::error!("Message that was being edited no longer exists");
1342                        return None;
1343                    };
1344                    let message_text = editor.read(cx).text(cx);
1345
1346                    if message_text.is_empty() && message.loaded_context.is_empty() {
1347                        return None;
1348                    }
1349
1350                    let mut request_message = LanguageModelRequestMessage {
1351                        role: language_model::Role::User,
1352                        content: Vec::new(),
1353                        cache: false,
1354                    };
1355
1356                    message
1357                        .loaded_context
1358                        .add_to_request_message(&mut request_message);
1359
1360                    if !message_text.is_empty() {
1361                        request_message
1362                            .content
1363                            .push(MessageContent::Text(message_text));
1364                    }
1365
1366                    let request = language_model::LanguageModelRequest {
1367                        thread_id: None,
1368                        prompt_id: None,
1369                        mode: None,
1370                        messages: vec![request_message],
1371                        tools: vec![],
1372                        stop: vec![],
1373                        temperature: None,
1374                    };
1375
1376                    Some(configured_model.model.count_tokens(request, cx))
1377                })
1378                .ok()
1379                .flatten()
1380            {
1381                task.await.log_err()
1382            } else {
1383                Some(0)
1384            };
1385
1386            if let Some(token_count) = token_count {
1387                this.update(cx, |this, cx| {
1388                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1389                        return;
1390                    };
1391
1392                    state.last_estimated_token_count = Some(token_count);
1393                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1394                })
1395                .ok();
1396            };
1397        }));
1398    }
1399
1400    fn toggle_context_picker(
1401        &mut self,
1402        _: &crate::ToggleContextPicker,
1403        window: &mut Window,
1404        cx: &mut Context<Self>,
1405    ) {
1406        if let Some((_, state)) = self.editing_message.as_mut() {
1407            let handle = state.context_picker_menu_handle.clone();
1408            window.defer(cx, move |window, cx| {
1409                handle.toggle(window, cx);
1410            });
1411        }
1412    }
1413
1414    fn remove_all_context(
1415        &mut self,
1416        _: &crate::RemoveAllContext,
1417        _window: &mut Window,
1418        cx: &mut Context<Self>,
1419    ) {
1420        self.context_store.update(cx, |store, _cx| store.clear());
1421        cx.notify();
1422    }
1423
1424    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1425        if let Some((_, state)) = self.editing_message.as_mut() {
1426            if state.context_picker_menu_handle.is_deployed() {
1427                cx.propagate();
1428            } else {
1429                state.context_strip.focus_handle(cx).focus(window);
1430            }
1431        }
1432    }
1433
1434    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1435        let images = cx
1436            .read_from_clipboard()
1437            .map(|item| {
1438                item.into_entries()
1439                    .filter_map(|entry| {
1440                        if let ClipboardEntry::Image(image) = entry {
1441                            Some(image)
1442                        } else {
1443                            None
1444                        }
1445                    })
1446                    .collect::<Vec<_>>()
1447            })
1448            .unwrap_or_default();
1449
1450        if images.is_empty() {
1451            return;
1452        }
1453        cx.stop_propagation();
1454
1455        self.context_store.update(cx, |store, cx| {
1456            for image in images {
1457                store.add_image_instance(Arc::new(image), cx);
1458            }
1459        });
1460    }
1461
1462    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1463        self.editing_message.take();
1464        cx.notify();
1465    }
1466
1467    fn confirm_editing_message(
1468        &mut self,
1469        _: &menu::Confirm,
1470        window: &mut Window,
1471        cx: &mut Context<Self>,
1472    ) {
1473        let Some((message_id, state)) = self.editing_message.take() else {
1474            return;
1475        };
1476
1477        let Some(model) = self
1478            .thread
1479            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1480        else {
1481            return;
1482        };
1483
1484        if model.provider.must_accept_terms(cx) {
1485            cx.notify();
1486            return;
1487        }
1488
1489        let edited_text = state.editor.read(cx).text(cx);
1490
1491        let new_context = self
1492            .context_store
1493            .read(cx)
1494            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1495
1496        let project = self.thread.read(cx).project().clone();
1497        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1498
1499        let load_context_task =
1500            crate::context::load_context(new_context, &project, &prompt_store, cx);
1501        self._load_edited_message_context_task =
1502            Some(cx.spawn_in(window, async move |this, cx| {
1503                let context = load_context_task.await;
1504                let _ = this
1505                    .update_in(cx, |this, window, cx| {
1506                        this.thread.update(cx, |thread, cx| {
1507                            thread.edit_message(
1508                                message_id,
1509                                Role::User,
1510                                vec![MessageSegment::Text(edited_text)],
1511                                Some(context.loaded_context),
1512                                cx,
1513                            );
1514                            for message_id in this.messages_after(message_id) {
1515                                thread.delete_message(*message_id, cx);
1516                            }
1517                        });
1518
1519                        this.thread.update(cx, |thread, cx| {
1520                            thread.advance_prompt_id();
1521                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1522                        });
1523                        this._load_edited_message_context_task = None;
1524                        cx.notify();
1525                    })
1526                    .log_err();
1527            }));
1528    }
1529
1530    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1531        self.messages
1532            .iter()
1533            .position(|id| *id == message_id)
1534            .map(|index| &self.messages[index + 1..])
1535            .unwrap_or(&[])
1536    }
1537
1538    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1539        self.cancel_editing_message(&menu::Cancel, window, cx);
1540    }
1541
1542    fn handle_regenerate_click(
1543        &mut self,
1544        _: &ClickEvent,
1545        window: &mut Window,
1546        cx: &mut Context<Self>,
1547    ) {
1548        self.confirm_editing_message(&menu::Confirm, window, cx);
1549    }
1550
1551    fn handle_feedback_click(
1552        &mut self,
1553        message_id: MessageId,
1554        feedback: ThreadFeedback,
1555        window: &mut Window,
1556        cx: &mut Context<Self>,
1557    ) {
1558        let report = self.thread.update(cx, |thread, cx| {
1559            thread.report_message_feedback(message_id, feedback, cx)
1560        });
1561
1562        cx.spawn(async move |this, cx| {
1563            report.await?;
1564            this.update(cx, |_this, cx| cx.notify())
1565        })
1566        .detach_and_log_err(cx);
1567
1568        match feedback {
1569            ThreadFeedback::Positive => {
1570                self.open_feedback_editors.remove(&message_id);
1571            }
1572            ThreadFeedback::Negative => {
1573                self.handle_show_feedback_comments(message_id, window, cx);
1574            }
1575        }
1576    }
1577
1578    fn handle_show_feedback_comments(
1579        &mut self,
1580        message_id: MessageId,
1581        window: &mut Window,
1582        cx: &mut Context<Self>,
1583    ) {
1584        let buffer = cx.new(|cx| {
1585            let empty_string = String::new();
1586            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1587        });
1588
1589        let editor = cx.new(|cx| {
1590            let mut editor = Editor::new(
1591                editor::EditorMode::AutoHeight { max_lines: 4 },
1592                buffer,
1593                None,
1594                window,
1595                cx,
1596            );
1597            editor.set_placeholder_text(
1598                "What went wrong? Share your feedback so we can improve.",
1599                cx,
1600            );
1601            editor
1602        });
1603
1604        editor.read(cx).focus_handle(cx).focus(window);
1605        self.open_feedback_editors.insert(message_id, editor);
1606        cx.notify();
1607    }
1608
1609    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1610        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1611            return;
1612        };
1613
1614        let report_task = self.thread.update(cx, |thread, cx| {
1615            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1616        });
1617
1618        let comments = editor.read(cx).text(cx);
1619        if !comments.is_empty() {
1620            let thread_id = self.thread.read(cx).id().clone();
1621            let comments_value = String::from(comments.as_str());
1622
1623            let message_content = self
1624                .thread
1625                .read(cx)
1626                .message(message_id)
1627                .map(|msg| msg.to_string())
1628                .unwrap_or_default();
1629
1630            telemetry::event!(
1631                "Assistant Thread Feedback Comments",
1632                thread_id,
1633                message_id = message_id.0,
1634                message_content,
1635                comments = comments_value
1636            );
1637
1638            self.open_feedback_editors.remove(&message_id);
1639
1640            cx.spawn(async move |this, cx| {
1641                report_task.await?;
1642                this.update(cx, |_this, cx| cx.notify())
1643            })
1644            .detach_and_log_err(cx);
1645        }
1646    }
1647
1648    fn render_edit_message_editor(
1649        &self,
1650        state: &EditingMessageState,
1651        window: &mut Window,
1652        cx: &Context<Self>,
1653    ) -> impl IntoElement {
1654        let settings = ThemeSettings::get_global(cx);
1655        let font_size = TextSize::Small.rems(cx);
1656        let line_height = font_size.to_pixels(window.rem_size()) * 1.75;
1657
1658        let colors = cx.theme().colors();
1659
1660        let text_style = TextStyle {
1661            color: colors.text,
1662            font_family: settings.buffer_font.family.clone(),
1663            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1664            font_features: settings.buffer_font.features.clone(),
1665            font_size: font_size.into(),
1666            line_height: line_height.into(),
1667            ..Default::default()
1668        };
1669
1670        v_flex()
1671            .key_context("EditMessageEditor")
1672            .on_action(cx.listener(Self::toggle_context_picker))
1673            .on_action(cx.listener(Self::remove_all_context))
1674            .on_action(cx.listener(Self::move_up))
1675            .on_action(cx.listener(Self::cancel_editing_message))
1676            .on_action(cx.listener(Self::confirm_editing_message))
1677            .capture_action(cx.listener(Self::paste))
1678            .min_h_6()
1679            .flex_grow()
1680            .w_full()
1681            .gap_2()
1682            .child(EditorElement::new(
1683                &state.editor,
1684                EditorStyle {
1685                    background: colors.editor_background,
1686                    local_player: cx.theme().players().local(),
1687                    text: text_style,
1688                    syntax: cx.theme().syntax().clone(),
1689                    ..Default::default()
1690                },
1691            ))
1692            .child(state.context_strip.clone())
1693    }
1694
1695    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1696        let message_id = self.messages[ix];
1697        let Some(message) = self.thread.read(cx).message(message_id) else {
1698            return Empty.into_any();
1699        };
1700
1701        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1702            return Empty.into_any();
1703        };
1704
1705        let workspace = self.workspace.clone();
1706        let thread = self.thread.read(cx);
1707
1708        // Get all the data we need from thread before we start using it in closures
1709        let checkpoint = thread.checkpoint_for_message(message_id);
1710        let added_context = thread
1711            .context_for_message(message_id)
1712            .map(|context| AddedContext::new_attached(context, cx))
1713            .collect::<Vec<_>>();
1714
1715        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1716        let has_tool_uses = !tool_uses.is_empty();
1717        let is_generating = thread.is_generating();
1718        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1719
1720        let is_first_message = ix == 0;
1721        let is_last_message = ix == self.messages.len() - 1;
1722
1723        let loading_dots = (is_generating_stale && is_last_message)
1724            .then(|| AnimatedLabel::new("").size(LabelSize::Small));
1725
1726        let editing_message_state = self
1727            .editing_message
1728            .as_ref()
1729            .filter(|(id, _)| *id == message_id)
1730            .map(|(_, state)| state);
1731
1732        let colors = cx.theme().colors();
1733        let editor_bg_color = colors.editor_background;
1734
1735        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileCode)
1736            .shape(ui::IconButtonShape::Square)
1737            .icon_size(IconSize::XSmall)
1738            .icon_color(Color::Ignored)
1739            .tooltip(Tooltip::text("Open Thread as Markdown"))
1740            .on_click(|_, window, cx| {
1741                window.dispatch_action(Box::new(OpenActiveThreadAsMarkdown), cx)
1742            });
1743
1744        // For all items that should be aligned with the LLM's response.
1745        const RESPONSE_PADDING_X: Pixels = px(19.);
1746
1747        let show_feedback = thread.is_turn_end(ix);
1748
1749        let feedback_container = h_flex()
1750            .group("feedback_container")
1751            .mt_1()
1752            .py_2()
1753            .px(RESPONSE_PADDING_X)
1754            .gap_1()
1755            .flex_wrap()
1756            .justify_end();
1757        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1758            Some(feedback) => feedback_container
1759                .child(
1760                    div().mr_1().visible_on_hover("feedback_container").child(
1761                        Label::new(match feedback {
1762                            ThreadFeedback::Positive => "Thanks for your feedback!",
1763                            ThreadFeedback::Negative => {
1764                                "We appreciate your feedback and will use it to improve."
1765                            }
1766                        })
1767                    .color(Color::Muted)
1768                    .size(LabelSize::XSmall)
1769                    .truncate())
1770                )
1771                .child(
1772                    h_flex()
1773                        .pr_1()
1774                        .gap_1()
1775                        .child(
1776                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1777                                .shape(ui::IconButtonShape::Square)
1778                                .icon_size(IconSize::XSmall)
1779                                .icon_color(match feedback {
1780                                    ThreadFeedback::Positive => Color::Accent,
1781                                    ThreadFeedback::Negative => Color::Ignored,
1782                                })
1783                                .tooltip(Tooltip::text("Helpful Response"))
1784                                .on_click(cx.listener(move |this, _, window, cx| {
1785                                    this.handle_feedback_click(
1786                                        message_id,
1787                                        ThreadFeedback::Positive,
1788                                        window,
1789                                        cx,
1790                                    );
1791                                })),
1792                        )
1793                        .child(
1794                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1795                                .shape(ui::IconButtonShape::Square)
1796                                .icon_size(IconSize::XSmall)
1797                                .icon_color(match feedback {
1798                                    ThreadFeedback::Positive => Color::Ignored,
1799                                    ThreadFeedback::Negative => Color::Accent,
1800                                })
1801                                .tooltip(Tooltip::text("Not Helpful"))
1802                                .on_click(cx.listener(move |this, _, window, cx| {
1803                                    this.handle_feedback_click(
1804                                        message_id,
1805                                        ThreadFeedback::Negative,
1806                                        window,
1807                                        cx,
1808                                    );
1809                                })),
1810                        )
1811                        .child(open_as_markdown),
1812                )
1813                .into_any_element(),
1814            None => feedback_container
1815                .child(
1816                    div().mr_1().visible_on_hover("feedback_container").child(
1817                        Label::new(
1818                            "Rating the thread sends all of your current conversation to the Zed team.",
1819                        )
1820                        .color(Color::Muted)
1821                    .size(LabelSize::XSmall)
1822                    .truncate())
1823                )
1824                .child(
1825                    h_flex()
1826                        .pr_1()
1827                        .gap_1()
1828                        .child(
1829                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1830                                .icon_size(IconSize::XSmall)
1831                                .icon_color(Color::Ignored)
1832                                .shape(ui::IconButtonShape::Square)
1833                                .tooltip(Tooltip::text("Helpful Response"))
1834                                .on_click(cx.listener(move |this, _, window, cx| {
1835                                    this.handle_feedback_click(
1836                                        message_id,
1837                                        ThreadFeedback::Positive,
1838                                        window,
1839                                        cx,
1840                                    );
1841                                })),
1842                        )
1843                        .child(
1844                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1845                                .icon_size(IconSize::XSmall)
1846                                .icon_color(Color::Ignored)
1847                                .shape(ui::IconButtonShape::Square)
1848                                .tooltip(Tooltip::text("Not Helpful"))
1849                                .on_click(cx.listener(move |this, _, window, cx| {
1850                                    this.handle_feedback_click(
1851                                        message_id,
1852                                        ThreadFeedback::Negative,
1853                                        window,
1854                                        cx,
1855                                    );
1856                                })),
1857                        )
1858                        .child(open_as_markdown),
1859                )
1860                .into_any_element(),
1861        };
1862
1863        let message_is_empty = message.should_display_content();
1864        let has_content = !message_is_empty || !added_context.is_empty();
1865
1866        let message_content = has_content.then(|| {
1867            if let Some(state) = editing_message_state.as_ref() {
1868                self.render_edit_message_editor(state, window, cx)
1869                    .into_any_element()
1870            } else {
1871                v_flex()
1872                    .w_full()
1873                    .gap_1()
1874                    .when(!message_is_empty, |parent| {
1875                        parent.child(div().min_h_6().child(self.render_message_content(
1876                            message_id,
1877                            rendered_message,
1878                            has_tool_uses,
1879                            workspace.clone(),
1880                            window,
1881                            cx,
1882                        )))
1883                    })
1884                    .when(!added_context.is_empty(), |parent| {
1885                        parent.child(h_flex().flex_wrap().gap_1().children(
1886                            added_context.into_iter().map(|added_context| {
1887                                let context = added_context.handle.clone();
1888                                ContextPill::added(added_context, false, false, None).on_click(
1889                                    Rc::new(cx.listener({
1890                                        let workspace = workspace.clone();
1891                                        move |_, _, window, cx| {
1892                                            if let Some(workspace) = workspace.upgrade() {
1893                                                open_context(&context, workspace, window, cx);
1894                                                cx.notify();
1895                                            }
1896                                        }
1897                                    })),
1898                                )
1899                            }),
1900                        ))
1901                    })
1902                    .into_any_element()
1903            }
1904        });
1905
1906        let styled_message = match message.role {
1907            Role::User => v_flex()
1908                .id(("message-container", ix))
1909                .pt_2()
1910                .pl_2()
1911                .pr_2p5()
1912                .pb_4()
1913                .child(
1914                    v_flex()
1915                        .id(("user-message", ix))
1916                        .bg(editor_bg_color)
1917                        .rounded_lg()
1918                        .shadow_md()
1919                        .border_1()
1920                        .border_color(colors.border)
1921                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1922                        .cursor_pointer()
1923                        .child(
1924                            h_flex()
1925                                .p_2p5()
1926                                .gap_1()
1927                                .children(message_content)
1928                                .when_some(editing_message_state, |this, state| {
1929                                    let focus_handle = state.editor.focus_handle(cx).clone();
1930                                    this.w_full().justify_between().child(
1931                                        h_flex()
1932                                            .gap_0p5()
1933                                            .child(
1934                                                IconButton::new(
1935                                                    "cancel-edit-message",
1936                                                    IconName::Close,
1937                                                )
1938                                                .shape(ui::IconButtonShape::Square)
1939                                                .icon_color(Color::Error)
1940                                                .tooltip({
1941                                                    let focus_handle = focus_handle.clone();
1942                                                    move |window, cx| {
1943                                                        Tooltip::for_action_in(
1944                                                            "Cancel Edit",
1945                                                            &menu::Cancel,
1946                                                            &focus_handle,
1947                                                            window,
1948                                                            cx,
1949                                                        )
1950                                                    }
1951                                                })
1952                                                .on_click(cx.listener(Self::handle_cancel_click)),
1953                                            )
1954                                            .child(
1955                                                IconButton::new(
1956                                                    "confirm-edit-message",
1957                                                    IconName::Check,
1958                                                )
1959                                                .disabled(state.editor.read(cx).is_empty(cx))
1960                                                .shape(ui::IconButtonShape::Square)
1961                                                .icon_color(Color::Success)
1962                                                .tooltip({
1963                                                    let focus_handle = focus_handle.clone();
1964                                                    move |window, cx| {
1965                                                        Tooltip::for_action_in(
1966                                                            "Regenerate",
1967                                                            &menu::Confirm,
1968                                                            &focus_handle,
1969                                                            window,
1970                                                            cx,
1971                                                        )
1972                                                    }
1973                                                })
1974                                                .on_click(
1975                                                    cx.listener(Self::handle_regenerate_click),
1976                                                ),
1977                                            ),
1978                                    )
1979                                }),
1980                        )
1981                        .when(editing_message_state.is_none(), |this| {
1982                            this.tooltip(Tooltip::text("Click To Edit"))
1983                        })
1984                        .on_click(cx.listener({
1985                            let message_segments = message.segments.clone();
1986                            move |this, _, window, cx| {
1987                                this.start_editing_message(
1988                                    message_id,
1989                                    &message_segments,
1990                                    window,
1991                                    cx,
1992                                );
1993                            }
1994                        })),
1995                ),
1996            Role::Assistant => v_flex()
1997                .id(("message-container", ix))
1998                .px(RESPONSE_PADDING_X)
1999                .gap_2()
2000                .children(message_content)
2001                .when(has_tool_uses, |parent| {
2002                    parent.children(tool_uses.into_iter().map(|tool_use| {
2003                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2004                    }))
2005                }),
2006            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2007                v_flex()
2008                    .bg(colors.editor_background)
2009                    .rounded_sm()
2010                    .child(div().p_4().children(message_content)),
2011            ),
2012        };
2013
2014        let after_editing_message = self
2015            .editing_message
2016            .as_ref()
2017            .map_or(false, |(editing_message_id, _)| {
2018                message_id > *editing_message_id
2019            });
2020
2021        let panel_background = cx.theme().colors().panel_background;
2022
2023        v_flex()
2024            .w_full()
2025            .map(|parent| {
2026                if let Some(checkpoint) = checkpoint.filter(|_| is_generating) {
2027                    let mut is_pending = false;
2028                    let mut error = None;
2029                    if let Some(last_restore_checkpoint) =
2030                        self.thread.read(cx).last_restore_checkpoint()
2031                    {
2032                        if last_restore_checkpoint.message_id() == message_id {
2033                            match last_restore_checkpoint {
2034                                LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2035                                LastRestoreCheckpoint::Error { error: err, .. } => {
2036                                    error = Some(err.clone());
2037                                }
2038                            }
2039                        }
2040                    }
2041
2042                    let restore_checkpoint_button =
2043                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2044                            .icon(if error.is_some() {
2045                                IconName::XCircle
2046                            } else {
2047                                IconName::Undo
2048                            })
2049                            .icon_size(IconSize::XSmall)
2050                            .icon_position(IconPosition::Start)
2051                            .icon_color(if error.is_some() {
2052                                Some(Color::Error)
2053                            } else {
2054                                None
2055                            })
2056                            .label_size(LabelSize::XSmall)
2057                            .disabled(is_pending)
2058                            .on_click(cx.listener(move |this, _, _window, cx| {
2059                                this.thread.update(cx, |thread, cx| {
2060                                    thread
2061                                        .restore_checkpoint(checkpoint.clone(), cx)
2062                                        .detach_and_log_err(cx);
2063                                });
2064                            }));
2065
2066                    let restore_checkpoint_button = if is_pending {
2067                        restore_checkpoint_button
2068                            .with_animation(
2069                                ("pulsating-restore-checkpoint-button", ix),
2070                                Animation::new(Duration::from_secs(2))
2071                                    .repeat()
2072                                    .with_easing(pulsating_between(0.6, 1.)),
2073                                |label, delta| label.alpha(delta),
2074                            )
2075                            .into_any_element()
2076                    } else if let Some(error) = error {
2077                        restore_checkpoint_button
2078                            .tooltip(Tooltip::text(error.to_string()))
2079                            .into_any_element()
2080                    } else {
2081                        restore_checkpoint_button.into_any_element()
2082                    };
2083
2084                    parent.child(
2085                        h_flex()
2086                            .pt_2p5()
2087                            .px_2p5()
2088                            .w_full()
2089                            .gap_1()
2090                            .child(ui::Divider::horizontal())
2091                            .child(restore_checkpoint_button)
2092                            .child(ui::Divider::horizontal()),
2093                    )
2094                } else {
2095                    parent
2096                }
2097            })
2098            .when(is_first_message, |parent| {
2099                parent.child(self.render_rules_item(cx))
2100            })
2101            .child(styled_message)
2102            .when(is_generating && is_last_message, |this| {
2103                this.child(
2104                    h_flex()
2105                        .h_8()
2106                        .mt_2()
2107                        .mb_4()
2108                        .ml_4()
2109                        .py_1p5()
2110                        .when_some(loading_dots, |this, loading_dots| this.child(loading_dots)),
2111                )
2112            })
2113            .when(show_feedback, move |parent| {
2114                parent.child(feedback_items).when_some(
2115                    self.open_feedback_editors.get(&message_id),
2116                    move |parent, feedback_editor| {
2117                        let focus_handle = feedback_editor.focus_handle(cx);
2118                        parent.child(
2119                            v_flex()
2120                                .key_context("AgentFeedbackMessageEditor")
2121                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2122                                    this.open_feedback_editors.remove(&message_id);
2123                                    cx.notify();
2124                                }))
2125                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2126                                    this.submit_feedback_message(message_id, cx);
2127                                    cx.notify();
2128                                }))
2129                                .on_action(cx.listener(Self::confirm_editing_message))
2130                                .mb_2()
2131                                .mx_4()
2132                                .p_2()
2133                                .rounded_md()
2134                                .border_1()
2135                                .border_color(cx.theme().colors().border)
2136                                .bg(cx.theme().colors().editor_background)
2137                                .child(feedback_editor.clone())
2138                                .child(
2139                                    h_flex()
2140                                        .gap_1()
2141                                        .justify_end()
2142                                        .child(
2143                                            Button::new("dismiss-feedback-message", "Cancel")
2144                                                .label_size(LabelSize::Small)
2145                                                .key_binding(
2146                                                    KeyBinding::for_action_in(
2147                                                        &menu::Cancel,
2148                                                        &focus_handle,
2149                                                        window,
2150                                                        cx,
2151                                                    )
2152                                                    .map(|kb| kb.size(rems_from_px(10.))),
2153                                                )
2154                                                .on_click(cx.listener(
2155                                                    move |this, _, _window, cx| {
2156                                                        this.open_feedback_editors
2157                                                            .remove(&message_id);
2158                                                        cx.notify();
2159                                                    },
2160                                                )),
2161                                        )
2162                                        .child(
2163                                            Button::new(
2164                                                "submit-feedback-message",
2165                                                "Share Feedback",
2166                                            )
2167                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2168                                            .label_size(LabelSize::Small)
2169                                            .key_binding(
2170                                                KeyBinding::for_action_in(
2171                                                    &menu::Confirm,
2172                                                    &focus_handle,
2173                                                    window,
2174                                                    cx,
2175                                                )
2176                                                .map(|kb| kb.size(rems_from_px(10.))),
2177                                            )
2178                                            .on_click(
2179                                                cx.listener(move |this, _, _window, cx| {
2180                                                    this.submit_feedback_message(message_id, cx);
2181                                                    cx.notify()
2182                                                }),
2183                                            ),
2184                                        ),
2185                                ),
2186                        )
2187                    },
2188                )
2189            })
2190            .when(after_editing_message, |parent| {
2191                // Backdrop to dim out the whole thread below the editing user message
2192                parent.relative().child(
2193                    div()
2194                        .occlude()
2195                        .absolute()
2196                        .inset_0()
2197                        .size_full()
2198                        .bg(panel_background)
2199                        .opacity(0.8),
2200                )
2201            })
2202            .into_any()
2203    }
2204
2205    fn render_message_content(
2206        &self,
2207        message_id: MessageId,
2208        rendered_message: &RenderedMessage,
2209        has_tool_uses: bool,
2210        workspace: WeakEntity<Workspace>,
2211        window: &Window,
2212        cx: &Context<Self>,
2213    ) -> impl IntoElement {
2214        let is_last_message = self.messages.last() == Some(&message_id);
2215        let is_generating = self.thread.read(cx).is_generating();
2216        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2217            rendered_message
2218                .segments
2219                .iter()
2220                .enumerate()
2221                .next_back()
2222                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2223                .map(|(index, _)| index)
2224        } else {
2225            None
2226        };
2227
2228        let message_role = self
2229            .thread
2230            .read(cx)
2231            .message(message_id)
2232            .map(|m| m.role)
2233            .unwrap_or(Role::User);
2234
2235        let is_assistant_message = message_role == Role::Assistant;
2236        let is_user_message = message_role == Role::User;
2237
2238        v_flex()
2239            .text_ui(cx)
2240            .gap_2()
2241            .when(is_user_message, |this| this.text_xs())
2242            .children(
2243                rendered_message.segments.iter().enumerate().map(
2244                    |(index, segment)| match segment {
2245                        RenderedMessageSegment::Thinking {
2246                            content,
2247                            scroll_handle,
2248                        } => self
2249                            .render_message_thinking_segment(
2250                                message_id,
2251                                index,
2252                                content.clone(),
2253                                &scroll_handle,
2254                                Some(index) == pending_thinking_segment_index,
2255                                window,
2256                                cx,
2257                            )
2258                            .into_any_element(),
2259                        RenderedMessageSegment::Text(markdown) => {
2260                            let markdown_element = MarkdownElement::new(
2261                                markdown.clone(),
2262                                if is_user_message {
2263                                    let mut style = default_markdown_style(window, cx);
2264                                    let mut text_style = window.text_style();
2265                                    let theme_settings = ThemeSettings::get_global(cx);
2266
2267                                    let buffer_font = theme_settings.buffer_font.family.clone();
2268                                    let buffer_font_size = TextSize::Small.rems(cx);
2269
2270                                    text_style.refine(&TextStyleRefinement {
2271                                        font_family: Some(buffer_font),
2272                                        font_size: Some(buffer_font_size.into()),
2273                                        ..Default::default()
2274                                    });
2275
2276                                    style.base_text_style = text_style;
2277                                    style
2278                                } else {
2279                                    default_markdown_style(window, cx)
2280                                },
2281                            );
2282
2283                            let markdown_element = if is_assistant_message {
2284                                markdown_element.code_block_renderer(
2285                                    markdown::CodeBlockRenderer::Custom {
2286                                        render: Arc::new({
2287                                            let workspace = workspace.clone();
2288                                            let active_thread = cx.entity();
2289                                            move |kind,
2290                                                  parsed_markdown,
2291                                                  range,
2292                                                  metadata,
2293                                                  window,
2294                                                  cx| {
2295                                                render_markdown_code_block(
2296                                                    message_id,
2297                                                    range.start,
2298                                                    kind,
2299                                                    parsed_markdown,
2300                                                    metadata,
2301                                                    active_thread.clone(),
2302                                                    workspace.clone(),
2303                                                    window,
2304                                                    cx,
2305                                                )
2306                                            }
2307                                        }),
2308                                        transform: Some(Arc::new({
2309                                            let active_thread = cx.entity();
2310                                            let editor_bg = cx.theme().colors().editor_background;
2311
2312                                            move |el, range, metadata, _, cx| {
2313                                                let is_expanded = active_thread
2314                                                    .read(cx)
2315                                                    .expanded_code_blocks
2316                                                    .get(&(message_id, range.start))
2317                                                    .copied()
2318                                                    .unwrap_or(true);
2319
2320                                                if is_expanded
2321                                                    || metadata.line_count
2322                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2323                                                {
2324                                                    return el;
2325                                                }
2326                                                el.child(
2327                                                    div()
2328                                                        .absolute()
2329                                                        .bottom_0()
2330                                                        .left_0()
2331                                                        .w_full()
2332                                                        .h_1_4()
2333                                                        .rounded_b_lg()
2334                                                        .bg(linear_gradient(
2335                                                            0.,
2336                                                            linear_color_stop(editor_bg, 0.),
2337                                                            linear_color_stop(
2338                                                                editor_bg.opacity(0.),
2339                                                                1.,
2340                                                            ),
2341                                                        )),
2342                                                )
2343                                            }
2344                                        })),
2345                                    },
2346                                )
2347                            } else {
2348                                markdown_element.code_block_renderer(
2349                                    markdown::CodeBlockRenderer::Default {
2350                                        copy_button: false,
2351                                        border: true,
2352                                    },
2353                                )
2354                            };
2355
2356                            div()
2357                                .child(markdown_element.on_url_click({
2358                                    let workspace = self.workspace.clone();
2359                                    move |text, window, cx| {
2360                                        open_markdown_link(text, workspace.clone(), window, cx);
2361                                    }
2362                                }))
2363                                .into_any_element()
2364                        }
2365                    },
2366                ),
2367            )
2368    }
2369
2370    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2371        cx.theme().colors().border.opacity(0.5)
2372    }
2373
2374    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2375        cx.theme()
2376            .colors()
2377            .element_background
2378            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2379    }
2380
2381    fn render_message_thinking_segment(
2382        &self,
2383        message_id: MessageId,
2384        ix: usize,
2385        markdown: Entity<Markdown>,
2386        scroll_handle: &ScrollHandle,
2387        pending: bool,
2388        window: &Window,
2389        cx: &Context<Self>,
2390    ) -> impl IntoElement {
2391        let is_open = self
2392            .expanded_thinking_segments
2393            .get(&(message_id, ix))
2394            .copied()
2395            .unwrap_or_default();
2396
2397        let editor_bg = cx.theme().colors().panel_background;
2398
2399        div().map(|this| {
2400            if pending {
2401                this.v_flex()
2402                    .mt_neg_2()
2403                    .mb_1p5()
2404                    .child(
2405                        h_flex()
2406                            .group("disclosure-header")
2407                            .justify_between()
2408                            .child(
2409                                h_flex()
2410                                    .gap_1p5()
2411                                    .child(
2412                                        Icon::new(IconName::LightBulb)
2413                                            .size(IconSize::XSmall)
2414                                            .color(Color::Muted),
2415                                    )
2416                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2417                            )
2418                            .child(
2419                                h_flex()
2420                                    .gap_1()
2421                                    .child(
2422                                        div().visible_on_hover("disclosure-header").child(
2423                                            Disclosure::new("thinking-disclosure", is_open)
2424                                                .opened_icon(IconName::ChevronUp)
2425                                                .closed_icon(IconName::ChevronDown)
2426                                                .on_click(cx.listener({
2427                                                    move |this, _event, _window, _cx| {
2428                                                        let is_open = this
2429                                                            .expanded_thinking_segments
2430                                                            .entry((message_id, ix))
2431                                                            .or_insert(false);
2432
2433                                                        *is_open = !*is_open;
2434                                                    }
2435                                                })),
2436                                        ),
2437                                    )
2438                                    .child({
2439                                        Icon::new(IconName::ArrowCircle)
2440                                            .color(Color::Accent)
2441                                            .size(IconSize::Small)
2442                                            .with_animation(
2443                                                "arrow-circle",
2444                                                Animation::new(Duration::from_secs(2)).repeat(),
2445                                                |icon, delta| {
2446                                                    icon.transform(Transformation::rotate(
2447                                                        percentage(delta),
2448                                                    ))
2449                                                },
2450                                            )
2451                                    }),
2452                            ),
2453                    )
2454                    .when(!is_open, |this| {
2455                        let gradient_overlay = div()
2456                            .rounded_b_lg()
2457                            .h_full()
2458                            .absolute()
2459                            .w_full()
2460                            .bottom_0()
2461                            .left_0()
2462                            .bg(linear_gradient(
2463                                180.,
2464                                linear_color_stop(editor_bg, 1.),
2465                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2466                            ));
2467
2468                        this.child(
2469                            div()
2470                                .relative()
2471                                .bg(editor_bg)
2472                                .rounded_b_lg()
2473                                .mt_2()
2474                                .pl_4()
2475                                .child(
2476                                    div()
2477                                        .id(("thinking-content", ix))
2478                                        .max_h_20()
2479                                        .track_scroll(scroll_handle)
2480                                        .text_ui_sm(cx)
2481                                        .overflow_hidden()
2482                                        .child(
2483                                            MarkdownElement::new(
2484                                                markdown.clone(),
2485                                                default_markdown_style(window, cx),
2486                                            )
2487                                            .on_url_click({
2488                                                let workspace = self.workspace.clone();
2489                                                move |text, window, cx| {
2490                                                    open_markdown_link(
2491                                                        text,
2492                                                        workspace.clone(),
2493                                                        window,
2494                                                        cx,
2495                                                    );
2496                                                }
2497                                            }),
2498                                        ),
2499                                )
2500                                .child(gradient_overlay),
2501                        )
2502                    })
2503                    .when(is_open, |this| {
2504                        this.child(
2505                            div()
2506                                .id(("thinking-content", ix))
2507                                .h_full()
2508                                .bg(editor_bg)
2509                                .text_ui_sm(cx)
2510                                .child(
2511                                    MarkdownElement::new(
2512                                        markdown.clone(),
2513                                        default_markdown_style(window, cx),
2514                                    )
2515                                    .on_url_click({
2516                                        let workspace = self.workspace.clone();
2517                                        move |text, window, cx| {
2518                                            open_markdown_link(text, workspace.clone(), window, cx);
2519                                        }
2520                                    }),
2521                                ),
2522                        )
2523                    })
2524            } else {
2525                this.v_flex()
2526                    .mt_neg_2()
2527                    .child(
2528                        h_flex()
2529                            .group("disclosure-header")
2530                            .pr_1()
2531                            .justify_between()
2532                            .opacity(0.8)
2533                            .hover(|style| style.opacity(1.))
2534                            .child(
2535                                h_flex()
2536                                    .gap_1p5()
2537                                    .child(
2538                                        Icon::new(IconName::LightBulb)
2539                                            .size(IconSize::XSmall)
2540                                            .color(Color::Muted),
2541                                    )
2542                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2543                            )
2544                            .child(
2545                                div().visible_on_hover("disclosure-header").child(
2546                                    Disclosure::new("thinking-disclosure", is_open)
2547                                        .opened_icon(IconName::ChevronUp)
2548                                        .closed_icon(IconName::ChevronDown)
2549                                        .on_click(cx.listener({
2550                                            move |this, _event, _window, _cx| {
2551                                                let is_open = this
2552                                                    .expanded_thinking_segments
2553                                                    .entry((message_id, ix))
2554                                                    .or_insert(false);
2555
2556                                                *is_open = !*is_open;
2557                                            }
2558                                        })),
2559                                ),
2560                            ),
2561                    )
2562                    .child(
2563                        div()
2564                            .id(("thinking-content", ix))
2565                            .relative()
2566                            .mt_1p5()
2567                            .ml_1p5()
2568                            .pl_2p5()
2569                            .border_l_1()
2570                            .border_color(cx.theme().colors().border_variant)
2571                            .text_ui_sm(cx)
2572                            .when(is_open, |this| {
2573                                this.child(
2574                                    MarkdownElement::new(
2575                                        markdown.clone(),
2576                                        default_markdown_style(window, cx),
2577                                    )
2578                                    .on_url_click({
2579                                        let workspace = self.workspace.clone();
2580                                        move |text, window, cx| {
2581                                            open_markdown_link(text, workspace.clone(), window, cx);
2582                                        }
2583                                    }),
2584                                )
2585                            }),
2586                    )
2587            }
2588        })
2589    }
2590
2591    fn render_tool_use(
2592        &self,
2593        tool_use: ToolUse,
2594        window: &mut Window,
2595        workspace: WeakEntity<Workspace>,
2596        cx: &mut Context<Self>,
2597    ) -> impl IntoElement + use<> {
2598        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2599            return card.render(&tool_use.status, window, workspace, cx);
2600        }
2601
2602        let is_open = self
2603            .expanded_tool_uses
2604            .get(&tool_use.id)
2605            .copied()
2606            .unwrap_or_default();
2607
2608        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2609
2610        let fs = self
2611            .workspace
2612            .upgrade()
2613            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2614        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2615        let needs_confirmation_tools = tool_use.needs_confirmation;
2616
2617        let status_icons = div().child(match &tool_use.status {
2618            ToolUseStatus::NeedsConfirmation => {
2619                let icon = Icon::new(IconName::Warning)
2620                    .color(Color::Warning)
2621                    .size(IconSize::Small);
2622                icon.into_any_element()
2623            }
2624            ToolUseStatus::Pending
2625            | ToolUseStatus::InputStillStreaming
2626            | ToolUseStatus::Running => {
2627                let icon = Icon::new(IconName::ArrowCircle)
2628                    .color(Color::Accent)
2629                    .size(IconSize::Small);
2630                icon.with_animation(
2631                    "arrow-circle",
2632                    Animation::new(Duration::from_secs(2)).repeat(),
2633                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2634                )
2635                .into_any_element()
2636            }
2637            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2638            ToolUseStatus::Error(_) => {
2639                let icon = Icon::new(IconName::Close)
2640                    .color(Color::Error)
2641                    .size(IconSize::Small);
2642                icon.into_any_element()
2643            }
2644        });
2645
2646        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2647        let results_content_container = || v_flex().p_2().gap_0p5();
2648
2649        let results_content = v_flex()
2650            .gap_1()
2651            .child(
2652                results_content_container()
2653                    .child(
2654                        Label::new("Input")
2655                            .size(LabelSize::XSmall)
2656                            .color(Color::Muted)
2657                            .buffer_font(cx),
2658                    )
2659                    .child(
2660                        div()
2661                            .w_full()
2662                            .text_ui_sm(cx)
2663                            .children(rendered_tool_use.as_ref().map(|rendered| {
2664                                MarkdownElement::new(
2665                                    rendered.input.clone(),
2666                                    tool_use_markdown_style(window, cx),
2667                                )
2668                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2669                                    copy_button: false,
2670                                    border: false,
2671                                })
2672                                .on_url_click({
2673                                    let workspace = self.workspace.clone();
2674                                    move |text, window, cx| {
2675                                        open_markdown_link(text, workspace.clone(), window, cx);
2676                                    }
2677                                })
2678                            })),
2679                    ),
2680            )
2681            .map(|container| match tool_use.status {
2682                ToolUseStatus::Finished(_) => container.child(
2683                    results_content_container()
2684                        .border_t_1()
2685                        .border_color(self.tool_card_border_color(cx))
2686                        .child(
2687                            Label::new("Result")
2688                                .size(LabelSize::XSmall)
2689                                .color(Color::Muted)
2690                                .buffer_font(cx),
2691                        )
2692                        .child(div().w_full().text_ui_sm(cx).children(
2693                            rendered_tool_use.as_ref().map(|rendered| {
2694                                MarkdownElement::new(
2695                                    rendered.output.clone(),
2696                                    tool_use_markdown_style(window, cx),
2697                                )
2698                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2699                                    copy_button: false,
2700                                    border: false,
2701                                })
2702                                .on_url_click({
2703                                    let workspace = self.workspace.clone();
2704                                    move |text, window, cx| {
2705                                        open_markdown_link(text, workspace.clone(), window, cx);
2706                                    }
2707                                })
2708                                .into_any_element()
2709                            }),
2710                        )),
2711                ),
2712                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2713                    results_content_container()
2714                        .border_t_1()
2715                        .border_color(self.tool_card_border_color(cx))
2716                        .child(
2717                            h_flex()
2718                                .gap_1()
2719                                .child(
2720                                    Icon::new(IconName::ArrowCircle)
2721                                        .size(IconSize::Small)
2722                                        .color(Color::Accent)
2723                                        .with_animation(
2724                                            "arrow-circle",
2725                                            Animation::new(Duration::from_secs(2)).repeat(),
2726                                            |icon, delta| {
2727                                                icon.transform(Transformation::rotate(percentage(
2728                                                    delta,
2729                                                )))
2730                                            },
2731                                        ),
2732                                )
2733                                .child(
2734                                    Label::new("Running…")
2735                                        .size(LabelSize::XSmall)
2736                                        .color(Color::Muted)
2737                                        .buffer_font(cx),
2738                                ),
2739                        ),
2740                ),
2741                ToolUseStatus::Error(_) => container.child(
2742                    results_content_container()
2743                        .border_t_1()
2744                        .border_color(self.tool_card_border_color(cx))
2745                        .child(
2746                            Label::new("Error")
2747                                .size(LabelSize::XSmall)
2748                                .color(Color::Muted)
2749                                .buffer_font(cx),
2750                        )
2751                        .child(
2752                            div()
2753                                .text_ui_sm(cx)
2754                                .children(rendered_tool_use.as_ref().map(|rendered| {
2755                                    MarkdownElement::new(
2756                                        rendered.output.clone(),
2757                                        tool_use_markdown_style(window, cx),
2758                                    )
2759                                    .on_url_click({
2760                                        let workspace = self.workspace.clone();
2761                                        move |text, window, cx| {
2762                                            open_markdown_link(text, workspace.clone(), window, cx);
2763                                        }
2764                                    })
2765                                    .into_any_element()
2766                                })),
2767                        ),
2768                ),
2769                ToolUseStatus::Pending => container,
2770                ToolUseStatus::NeedsConfirmation => container.child(
2771                    results_content_container()
2772                        .border_t_1()
2773                        .border_color(self.tool_card_border_color(cx))
2774                        .child(
2775                            Label::new("Asking Permission")
2776                                .size(LabelSize::Small)
2777                                .color(Color::Muted)
2778                                .buffer_font(cx),
2779                        ),
2780                ),
2781            });
2782
2783        let gradient_overlay = |color: Hsla| {
2784            div()
2785                .h_full()
2786                .absolute()
2787                .w_12()
2788                .bottom_0()
2789                .map(|element| {
2790                    if is_status_finished {
2791                        element.right_6()
2792                    } else {
2793                        element.right(px(44.))
2794                    }
2795                })
2796                .bg(linear_gradient(
2797                    90.,
2798                    linear_color_stop(color, 1.),
2799                    linear_color_stop(color.opacity(0.2), 0.),
2800                ))
2801        };
2802
2803        v_flex().gap_1().mb_2().map(|element| {
2804            if !needs_confirmation_tools {
2805                element.child(
2806                    v_flex()
2807                        .child(
2808                            h_flex()
2809                                .group("disclosure-header")
2810                                .relative()
2811                                .gap_1p5()
2812                                .justify_between()
2813                                .opacity(0.8)
2814                                .hover(|style| style.opacity(1.))
2815                                .when(!is_status_finished, |this| this.pr_2())
2816                                .child(
2817                                    h_flex()
2818                                        .id("tool-label-container")
2819                                        .gap_1p5()
2820                                        .max_w_full()
2821                                        .overflow_x_scroll()
2822                                        .child(
2823                                            Icon::new(tool_use.icon)
2824                                                .size(IconSize::XSmall)
2825                                                .color(Color::Muted),
2826                                        )
2827                                        .child(
2828                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2829                                                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| {
2830                                                    open_markdown_link(text, workspace.clone(), window, cx);
2831                                                }}))
2832                                            ),
2833                                        ),
2834                                )
2835                                .child(
2836                                    h_flex()
2837                                        .gap_1()
2838                                        .child(
2839                                            div().visible_on_hover("disclosure-header").child(
2840                                                Disclosure::new("tool-use-disclosure", is_open)
2841                                                    .opened_icon(IconName::ChevronUp)
2842                                                    .closed_icon(IconName::ChevronDown)
2843                                                    .on_click(cx.listener({
2844                                                        let tool_use_id = tool_use.id.clone();
2845                                                        move |this, _event, _window, _cx| {
2846                                                            let is_open = this
2847                                                                .expanded_tool_uses
2848                                                                .entry(tool_use_id.clone())
2849                                                                .or_insert(false);
2850
2851                                                            *is_open = !*is_open;
2852                                                        }
2853                                                    })),
2854                                            ),
2855                                        )
2856                                        .child(status_icons),
2857                                )
2858                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2859                        )
2860                        .map(|parent| {
2861                            if !is_open {
2862                                return parent;
2863                            }
2864
2865                            parent.child(
2866                                v_flex()
2867                                    .mt_1()
2868                                    .border_1()
2869                                    .border_color(self.tool_card_border_color(cx))
2870                                    .bg(cx.theme().colors().editor_background)
2871                                    .rounded_lg()
2872                                    .child(results_content),
2873                            )
2874                        }),
2875                )
2876            } else {
2877                v_flex()
2878                    .mb_2()
2879                    .rounded_lg()
2880                    .border_1()
2881                    .border_color(self.tool_card_border_color(cx))
2882                    .overflow_hidden()
2883                    .child(
2884                        h_flex()
2885                            .group("disclosure-header")
2886                            .relative()
2887                            .justify_between()
2888                            .py_1()
2889                            .map(|element| {
2890                                if is_status_finished {
2891                                    element.pl_2().pr_0p5()
2892                                } else {
2893                                    element.px_2()
2894                                }
2895                            })
2896                            .bg(self.tool_card_header_bg(cx))
2897                            .map(|element| {
2898                                if is_open {
2899                                    element.border_b_1().rounded_t_md()
2900                                } else if needs_confirmation {
2901                                    element.rounded_t_md()
2902                                } else {
2903                                    element.rounded_md()
2904                                }
2905                            })
2906                            .border_color(self.tool_card_border_color(cx))
2907                            .child(
2908                                h_flex()
2909                                    .id("tool-label-container")
2910                                    .gap_1p5()
2911                                    .max_w_full()
2912                                    .overflow_x_scroll()
2913                                    .child(
2914                                        Icon::new(tool_use.icon)
2915                                            .size(IconSize::XSmall)
2916                                            .color(Color::Muted),
2917                                    )
2918                                    .child(
2919                                        h_flex().pr_8().text_ui_sm(cx).children(
2920                                            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| {
2921                                                open_markdown_link(text, workspace.clone(), window, cx);
2922                                            }}))
2923                                        ),
2924                                    ),
2925                            )
2926                            .child(
2927                                h_flex()
2928                                    .gap_1()
2929                                    .child(
2930                                        div().visible_on_hover("disclosure-header").child(
2931                                            Disclosure::new("tool-use-disclosure", is_open)
2932                                                .opened_icon(IconName::ChevronUp)
2933                                                .closed_icon(IconName::ChevronDown)
2934                                                .on_click(cx.listener({
2935                                                    let tool_use_id = tool_use.id.clone();
2936                                                    move |this, _event, _window, _cx| {
2937                                                        let is_open = this
2938                                                            .expanded_tool_uses
2939                                                            .entry(tool_use_id.clone())
2940                                                            .or_insert(false);
2941
2942                                                        *is_open = !*is_open;
2943                                                    }
2944                                                })),
2945                                        ),
2946                                    )
2947                                    .child(status_icons),
2948                            )
2949                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
2950                    )
2951                    .map(|parent| {
2952                        if !is_open {
2953                            return parent;
2954                        }
2955
2956                        parent.child(
2957                            v_flex()
2958                                .bg(cx.theme().colors().editor_background)
2959                                .map(|element| {
2960                                    if  needs_confirmation {
2961                                        element.rounded_none()
2962                                    } else {
2963                                        element.rounded_b_lg()
2964                                    }
2965                                })
2966                                .child(results_content),
2967                        )
2968                    })
2969                    .when(needs_confirmation, |this| {
2970                        this.child(
2971                            h_flex()
2972                                .py_1()
2973                                .pl_2()
2974                                .pr_1()
2975                                .gap_1()
2976                                .justify_between()
2977                                .bg(cx.theme().colors().editor_background)
2978                                .border_t_1()
2979                                .border_color(self.tool_card_border_color(cx))
2980                                .rounded_b_lg()
2981                                .child(
2982                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
2983                                )
2984                                .child(
2985                                    h_flex()
2986                                        .gap_0p5()
2987                                        .child({
2988                                            let tool_id = tool_use.id.clone();
2989                                            Button::new(
2990                                                "always-allow-tool-action",
2991                                                "Always Allow",
2992                                            )
2993                                            .label_size(LabelSize::Small)
2994                                            .icon(IconName::CheckDouble)
2995                                            .icon_position(IconPosition::Start)
2996                                            .icon_size(IconSize::Small)
2997                                            .icon_color(Color::Success)
2998                                            .tooltip(move |window, cx|  {
2999                                                Tooltip::with_meta(
3000                                                    "Never ask for permission",
3001                                                    None,
3002                                                    "Restore the original behavior in your Agent Panel settings",
3003                                                    window,
3004                                                    cx,
3005                                                )
3006                                            })
3007                                            .on_click(cx.listener(
3008                                                move |this, event, window, cx| {
3009                                                    if let Some(fs) = fs.clone() {
3010                                                        update_settings_file::<AssistantSettings>(
3011                                                            fs.clone(),
3012                                                            cx,
3013                                                            |settings, _| {
3014                                                                settings.set_always_allow_tool_actions(true);
3015                                                            },
3016                                                        );
3017                                                    }
3018                                                    this.handle_allow_tool(
3019                                                        tool_id.clone(),
3020                                                        event,
3021                                                        window,
3022                                                        cx,
3023                                                    )
3024                                                },
3025                                            ))
3026                                        })
3027                                        .child(ui::Divider::vertical())
3028                                        .child({
3029                                            let tool_id = tool_use.id.clone();
3030                                            Button::new("allow-tool-action", "Allow")
3031                                                .label_size(LabelSize::Small)
3032                                                .icon(IconName::Check)
3033                                                .icon_position(IconPosition::Start)
3034                                                .icon_size(IconSize::Small)
3035                                                .icon_color(Color::Success)
3036                                                .on_click(cx.listener(
3037                                                    move |this, event, window, cx| {
3038                                                        this.handle_allow_tool(
3039                                                            tool_id.clone(),
3040                                                            event,
3041                                                            window,
3042                                                            cx,
3043                                                        )
3044                                                    },
3045                                                ))
3046                                        })
3047                                        .child({
3048                                            let tool_id = tool_use.id.clone();
3049                                            let tool_name: Arc<str> = tool_use.name.into();
3050                                            Button::new("deny-tool", "Deny")
3051                                                .label_size(LabelSize::Small)
3052                                                .icon(IconName::Close)
3053                                                .icon_position(IconPosition::Start)
3054                                                .icon_size(IconSize::Small)
3055                                                .icon_color(Color::Error)
3056                                                .on_click(cx.listener(
3057                                                    move |this, event, window, cx| {
3058                                                        this.handle_deny_tool(
3059                                                            tool_id.clone(),
3060                                                            tool_name.clone(),
3061                                                            event,
3062                                                            window,
3063                                                            cx,
3064                                                        )
3065                                                    },
3066                                                ))
3067                                        }),
3068                                ),
3069                        )
3070                    })
3071            }
3072        }).into_any_element()
3073    }
3074
3075    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3076        let project_context = self.thread.read(cx).project_context();
3077        let project_context = project_context.borrow();
3078        let Some(project_context) = project_context.as_ref() else {
3079            return div().into_any();
3080        };
3081
3082        let user_rules_text = if project_context.user_rules.is_empty() {
3083            None
3084        } else if project_context.user_rules.len() == 1 {
3085            let user_rules = &project_context.user_rules[0];
3086
3087            match user_rules.title.as_ref() {
3088                Some(title) => Some(format!("Using \"{title}\" user rule")),
3089                None => Some("Using user rule".into()),
3090            }
3091        } else {
3092            Some(format!(
3093                "Using {} user rules",
3094                project_context.user_rules.len()
3095            ))
3096        };
3097
3098        let first_user_rules_id = project_context
3099            .user_rules
3100            .first()
3101            .map(|user_rules| user_rules.uuid.0);
3102
3103        let rules_files = project_context
3104            .worktrees
3105            .iter()
3106            .filter_map(|worktree| worktree.rules_file.as_ref())
3107            .collect::<Vec<_>>();
3108
3109        let rules_file_text = match rules_files.as_slice() {
3110            &[] => None,
3111            &[rules_file] => Some(format!(
3112                "Using project {:?} file",
3113                rules_file.path_in_worktree
3114            )),
3115            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3116        };
3117
3118        if user_rules_text.is_none() && rules_file_text.is_none() {
3119            return div().into_any();
3120        }
3121
3122        v_flex()
3123            .pt_2()
3124            .px_2p5()
3125            .gap_1()
3126            .when_some(user_rules_text, |parent, user_rules_text| {
3127                parent.child(
3128                    h_flex()
3129                        .w_full()
3130                        .child(
3131                            Icon::new(RULES_ICON)
3132                                .size(IconSize::XSmall)
3133                                .color(Color::Disabled),
3134                        )
3135                        .child(
3136                            Label::new(user_rules_text)
3137                                .size(LabelSize::XSmall)
3138                                .color(Color::Muted)
3139                                .truncate()
3140                                .buffer_font(cx)
3141                                .ml_1p5()
3142                                .mr_0p5(),
3143                        )
3144                        .child(
3145                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3146                                .shape(ui::IconButtonShape::Square)
3147                                .icon_size(IconSize::XSmall)
3148                                .icon_color(Color::Ignored)
3149                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3150                                .tooltip(Tooltip::text("View User Rules"))
3151                                .on_click(move |_event, window, cx| {
3152                                    window.dispatch_action(
3153                                        Box::new(OpenRulesLibrary {
3154                                            prompt_to_select: first_user_rules_id,
3155                                        }),
3156                                        cx,
3157                                    )
3158                                }),
3159                        ),
3160                )
3161            })
3162            .when_some(rules_file_text, |parent, rules_file_text| {
3163                parent.child(
3164                    h_flex()
3165                        .w_full()
3166                        .child(
3167                            Icon::new(IconName::File)
3168                                .size(IconSize::XSmall)
3169                                .color(Color::Disabled),
3170                        )
3171                        .child(
3172                            Label::new(rules_file_text)
3173                                .size(LabelSize::XSmall)
3174                                .color(Color::Muted)
3175                                .buffer_font(cx)
3176                                .ml_1p5()
3177                                .mr_0p5(),
3178                        )
3179                        .child(
3180                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3181                                .shape(ui::IconButtonShape::Square)
3182                                .icon_size(IconSize::XSmall)
3183                                .icon_color(Color::Ignored)
3184                                .on_click(cx.listener(Self::handle_open_rules))
3185                                .tooltip(Tooltip::text("View Rules")),
3186                        ),
3187                )
3188            })
3189            .into_any()
3190    }
3191
3192    fn handle_allow_tool(
3193        &mut self,
3194        tool_use_id: LanguageModelToolUseId,
3195        _: &ClickEvent,
3196        window: &mut Window,
3197        cx: &mut Context<Self>,
3198    ) {
3199        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3200            .thread
3201            .read(cx)
3202            .pending_tool(&tool_use_id)
3203            .map(|tool_use| tool_use.status.clone())
3204        {
3205            self.thread.update(cx, |thread, cx| {
3206                thread.run_tool(
3207                    c.tool_use_id.clone(),
3208                    c.ui_text.clone(),
3209                    c.input.clone(),
3210                    &c.messages,
3211                    c.tool.clone(),
3212                    Some(window.window_handle()),
3213                    cx,
3214                );
3215            });
3216        }
3217    }
3218
3219    fn handle_deny_tool(
3220        &mut self,
3221        tool_use_id: LanguageModelToolUseId,
3222        tool_name: Arc<str>,
3223        _: &ClickEvent,
3224        window: &mut Window,
3225        cx: &mut Context<Self>,
3226    ) {
3227        let window_handle = window.window_handle();
3228        self.thread.update(cx, |thread, cx| {
3229            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3230        });
3231    }
3232
3233    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3234        let project_context = self.thread.read(cx).project_context();
3235        let project_context = project_context.borrow();
3236        let Some(project_context) = project_context.as_ref() else {
3237            return;
3238        };
3239
3240        let project_entry_ids = project_context
3241            .worktrees
3242            .iter()
3243            .flat_map(|worktree| worktree.rules_file.as_ref())
3244            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3245            .collect::<Vec<_>>();
3246
3247        self.workspace
3248            .update(cx, move |workspace, cx| {
3249                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3250                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3251                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3252                let project = workspace.project().read(cx);
3253                let project_paths = project_entry_ids
3254                    .into_iter()
3255                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3256                    .collect::<Vec<_>>();
3257                for project_path in project_paths {
3258                    workspace
3259                        .open_path(project_path, None, true, window, cx)
3260                        .detach_and_log_err(cx);
3261                }
3262            })
3263            .ok();
3264    }
3265
3266    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3267        for window in self.notifications.drain(..) {
3268            window
3269                .update(cx, |_, window, _| {
3270                    window.remove_window();
3271                })
3272                .ok();
3273
3274            self.notification_subscriptions.remove(&window);
3275        }
3276    }
3277
3278    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3279        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3280            return None;
3281        }
3282
3283        Some(
3284            div()
3285                .occlude()
3286                .id("active-thread-scrollbar")
3287                .on_mouse_move(cx.listener(|_, _, _, cx| {
3288                    cx.notify();
3289                    cx.stop_propagation()
3290                }))
3291                .on_hover(|_, _, cx| {
3292                    cx.stop_propagation();
3293                })
3294                .on_any_mouse_down(|_, _, cx| {
3295                    cx.stop_propagation();
3296                })
3297                .on_mouse_up(
3298                    MouseButton::Left,
3299                    cx.listener(|_, _, _, cx| {
3300                        cx.stop_propagation();
3301                    }),
3302                )
3303                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3304                    cx.notify();
3305                }))
3306                .h_full()
3307                .absolute()
3308                .right_1()
3309                .top_1()
3310                .bottom_0()
3311                .w(px(12.))
3312                .cursor_default()
3313                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3314        )
3315    }
3316
3317    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3318        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3319        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3320            cx.background_executor()
3321                .timer(SCROLLBAR_SHOW_INTERVAL)
3322                .await;
3323            thread
3324                .update(cx, |thread, cx| {
3325                    if !thread.scrollbar_state.is_dragging() {
3326                        thread.show_scrollbar = false;
3327                        cx.notify();
3328                    }
3329                })
3330                .log_err();
3331        }))
3332    }
3333}
3334
3335pub enum ActiveThreadEvent {
3336    EditingMessageTokenCountChanged,
3337}
3338
3339impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3340
3341impl Render for ActiveThread {
3342    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3343        v_flex()
3344            .size_full()
3345            .relative()
3346            .on_mouse_move(cx.listener(|this, _, _, cx| {
3347                this.show_scrollbar = true;
3348                this.hide_scrollbar_later(cx);
3349                cx.notify();
3350            }))
3351            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3352                this.show_scrollbar = true;
3353                this.hide_scrollbar_later(cx);
3354                cx.notify();
3355            }))
3356            .on_mouse_up(
3357                MouseButton::Left,
3358                cx.listener(|this, _, _, cx| {
3359                    this.hide_scrollbar_later(cx);
3360                }),
3361            )
3362            .child(list(self.list_state.clone()).flex_grow())
3363            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3364                this.child(scrollbar)
3365            })
3366    }
3367}
3368
3369pub(crate) fn open_context(
3370    context: &AgentContextHandle,
3371    workspace: Entity<Workspace>,
3372    window: &mut Window,
3373    cx: &mut App,
3374) {
3375    match context {
3376        AgentContextHandle::File(file_context) => {
3377            if let Some(project_path) = file_context.project_path(cx) {
3378                workspace.update(cx, |workspace, cx| {
3379                    workspace
3380                        .open_path(project_path, None, true, window, cx)
3381                        .detach_and_log_err(cx);
3382                });
3383            }
3384        }
3385
3386        AgentContextHandle::Directory(directory_context) => {
3387            let entry_id = directory_context.entry_id;
3388            workspace.update(cx, |workspace, cx| {
3389                workspace.project().update(cx, |_project, cx| {
3390                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3391                })
3392            })
3393        }
3394
3395        AgentContextHandle::Symbol(symbol_context) => {
3396            let buffer = symbol_context.buffer.read(cx);
3397            if let Some(project_path) = buffer.project_path(cx) {
3398                let snapshot = buffer.snapshot();
3399                let target_position = symbol_context.range.start.to_point(&snapshot);
3400                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3401                    .detach();
3402            }
3403        }
3404
3405        AgentContextHandle::Selection(selection_context) => {
3406            let buffer = selection_context.buffer.read(cx);
3407            if let Some(project_path) = buffer.project_path(cx) {
3408                let snapshot = buffer.snapshot();
3409                let target_position = selection_context.range.start.to_point(&snapshot);
3410
3411                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3412                    .detach();
3413            }
3414        }
3415
3416        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3417            cx.open_url(&fetched_url_context.url);
3418        }
3419
3420        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3421            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3422                panel.update(cx, |panel, cx| {
3423                    let thread_id = thread_context.thread.read(cx).id().clone();
3424                    panel
3425                        .open_thread_by_id(&thread_id, window, cx)
3426                        .detach_and_log_err(cx)
3427                });
3428            }
3429        }),
3430
3431        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3432            Box::new(OpenRulesLibrary {
3433                prompt_to_select: Some(rules_context.prompt_id.0),
3434            }),
3435            cx,
3436        ),
3437
3438        AgentContextHandle::Image(_) => {}
3439    }
3440}
3441
3442fn open_editor_at_position(
3443    project_path: project::ProjectPath,
3444    target_position: Point,
3445    workspace: &Entity<Workspace>,
3446    window: &mut Window,
3447    cx: &mut App,
3448) -> Task<()> {
3449    let open_task = workspace.update(cx, |workspace, cx| {
3450        workspace.open_path(project_path, None, true, window, cx)
3451    });
3452    window.spawn(cx, async move |cx| {
3453        if let Some(active_editor) = open_task
3454            .await
3455            .log_err()
3456            .and_then(|item| item.downcast::<Editor>())
3457        {
3458            active_editor
3459                .downgrade()
3460                .update_in(cx, |editor, window, cx| {
3461                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3462                })
3463                .log_err();
3464        }
3465    })
3466}