active_thread.rs

   1use crate::context_picker::{ContextPicker, MentionLink};
   2use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
   3use crate::message_editor::{extract_message_creases, insert_message_creases};
   4use crate::ui::{
   5    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
   6};
   7use crate::{AgentPanel, ModelUsageContext};
   8use agent::{
   9    ContextStore, LastRestoreCheckpoint, MessageCrease, MessageId, MessageSegment, TextThreadStore,
  10    Thread, ThreadError, ThreadEvent, ThreadFeedback, ThreadStore, ThreadSummary,
  11    context::{self, AgentContextHandle, RULES_ICON},
  12    thread_store::RulesLoadingError,
  13    tool_use::{PendingToolUseStatus, ToolUse},
  14};
  15use agent_settings::{AgentSettings, NotifyWhenAgentWaiting};
  16use anyhow::Context as _;
  17use assistant_tool::ToolUseStatus;
  18use audio::{Audio, Sound};
  19use collections::{HashMap, HashSet};
  20use editor::actions::{MoveUp, Paste};
  21use editor::scroll::Autoscroll;
  22use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer};
  23use gpui::{
  24    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardEntry,
  25    ClipboardItem, DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla,
  26    ListAlignment, ListOffset, ListState, MouseButton, PlatformDisplay, ScrollHandle, Stateful,
  27    StyleRefinement, Subscription, Task, TextStyle, TextStyleRefinement, Transformation,
  28    UnderlineStyle, WeakEntity, WindowHandle, linear_color_stop, linear_gradient, list, percentage,
  29    pulsating_between,
  30};
  31use language::{Buffer, Language, LanguageRegistry};
  32use language_model::{
  33    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, Role, StopReason,
  34};
  35use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  36use markdown::{
  37    HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown, PathWithRange,
  38};
  39use project::{ProjectEntryId, ProjectItem as _};
  40use rope::Point;
  41use settings::{Settings as _, SettingsStore, update_settings_file};
  42use std::ffi::OsStr;
  43use std::path::Path;
  44use std::rc::Rc;
  45use std::sync::Arc;
  46use std::time::Duration;
  47use text::ToPoint;
  48use theme::ThemeSettings;
  49use ui::{
  50    Disclosure, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize, Tooltip,
  51    prelude::*,
  52};
  53use util::ResultExt as _;
  54use util::markdown::MarkdownCodeBlock;
  55use workspace::{CollaboratorId, Workspace};
  56use zed_actions::assistant::OpenRulesLibrary;
  57use zed_llm_client::CompletionIntent;
  58
  59const CODEBLOCK_CONTAINER_GROUP: &str = "codeblock_container";
  60const EDIT_PREVIOUS_MESSAGE_MIN_LINES: usize = 1;
  61
  62pub struct ActiveThread {
  63    context_store: Entity<ContextStore>,
  64    language_registry: Arc<LanguageRegistry>,
  65    thread_store: Entity<ThreadStore>,
  66    text_thread_store: Entity<TextThreadStore>,
  67    thread: Entity<Thread>,
  68    workspace: WeakEntity<Workspace>,
  69    save_thread_task: Option<Task<()>>,
  70    messages: Vec<MessageId>,
  71    list_state: ListState,
  72    scrollbar_state: ScrollbarState,
  73    show_scrollbar: bool,
  74    hide_scrollbar_task: Option<Task<()>>,
  75    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  76    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  77    editing_message: Option<(MessageId, EditingMessageState)>,
  78    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  79    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  80    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  81    last_error: Option<ThreadError>,
  82    notifications: Vec<WindowHandle<AgentNotification>>,
  83    copied_code_block_ids: HashSet<(MessageId, usize)>,
  84    _subscriptions: Vec<Subscription>,
  85    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  86    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  87    _load_edited_message_context_task: Option<Task<()>>,
  88}
  89
  90struct RenderedMessage {
  91    language_registry: Arc<LanguageRegistry>,
  92    segments: Vec<RenderedMessageSegment>,
  93}
  94
  95#[derive(Clone)]
  96struct RenderedToolUse {
  97    label: Entity<Markdown>,
  98    input: Entity<Markdown>,
  99    output: Entity<Markdown>,
 100}
 101
 102impl RenderedMessage {
 103    fn from_segments(
 104        segments: &[MessageSegment],
 105        language_registry: Arc<LanguageRegistry>,
 106        cx: &mut App,
 107    ) -> Self {
 108        let mut this = Self {
 109            language_registry,
 110            segments: Vec::with_capacity(segments.len()),
 111        };
 112        for segment in segments {
 113            this.push_segment(segment, cx);
 114        }
 115        this
 116    }
 117
 118    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 119        if let Some(RenderedMessageSegment::Thinking {
 120            content,
 121            scroll_handle,
 122        }) = self.segments.last_mut()
 123        {
 124            content.update(cx, |markdown, cx| {
 125                markdown.append(text, cx);
 126            });
 127            scroll_handle.scroll_to_bottom();
 128        } else {
 129            self.segments.push(RenderedMessageSegment::Thinking {
 130                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 131                scroll_handle: ScrollHandle::default(),
 132            });
 133        }
 134    }
 135
 136    fn append_text(&mut self, text: &String, cx: &mut App) {
 137        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 138            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 139        } else {
 140            self.segments
 141                .push(RenderedMessageSegment::Text(parse_markdown(
 142                    SharedString::from(text),
 143                    self.language_registry.clone(),
 144                    cx,
 145                )));
 146        }
 147    }
 148
 149    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 150        match segment {
 151            MessageSegment::Thinking { text, .. } => {
 152                self.segments.push(RenderedMessageSegment::Thinking {
 153                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 154                    scroll_handle: ScrollHandle::default(),
 155                })
 156            }
 157            MessageSegment::Text(text) => {
 158                self.segments
 159                    .push(RenderedMessageSegment::Text(parse_markdown(
 160                        text.into(),
 161                        self.language_registry.clone(),
 162                        cx,
 163                    )))
 164            }
 165            MessageSegment::RedactedThinking(_) => {}
 166        };
 167    }
 168}
 169
 170enum RenderedMessageSegment {
 171    Thinking {
 172        content: Entity<Markdown>,
 173        scroll_handle: ScrollHandle,
 174    },
 175    Text(Entity<Markdown>),
 176}
 177
 178fn parse_markdown(
 179    text: SharedString,
 180    language_registry: Arc<LanguageRegistry>,
 181    cx: &mut App,
 182) -> Entity<Markdown> {
 183    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 184}
 185
 186pub(crate) fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 187    let theme_settings = ThemeSettings::get_global(cx);
 188    let colors = cx.theme().colors();
 189    let ui_font_size = TextSize::Default.rems(cx);
 190    let buffer_font_size = TextSize::Small.rems(cx);
 191    let mut text_style = window.text_style();
 192    let line_height = buffer_font_size * 1.75;
 193
 194    text_style.refine(&TextStyleRefinement {
 195        font_family: Some(theme_settings.ui_font.family.clone()),
 196        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 197        font_features: Some(theme_settings.ui_font.features.clone()),
 198        font_size: Some(ui_font_size.into()),
 199        line_height: Some(line_height.into()),
 200        color: Some(cx.theme().colors().text),
 201        ..Default::default()
 202    });
 203
 204    MarkdownStyle {
 205        base_text_style: text_style.clone(),
 206        syntax: cx.theme().syntax().clone(),
 207        selection_background_color: cx.theme().players().local().selection,
 208        code_block_overflow_x_scroll: true,
 209        table_overflow_x_scroll: true,
 210        heading_level_styles: Some(HeadingLevelStyles {
 211            h1: Some(TextStyleRefinement {
 212                font_size: Some(rems(1.15).into()),
 213                ..Default::default()
 214            }),
 215            h2: Some(TextStyleRefinement {
 216                font_size: Some(rems(1.1).into()),
 217                ..Default::default()
 218            }),
 219            h3: Some(TextStyleRefinement {
 220                font_size: Some(rems(1.05).into()),
 221                ..Default::default()
 222            }),
 223            h4: Some(TextStyleRefinement {
 224                font_size: Some(rems(1.).into()),
 225                ..Default::default()
 226            }),
 227            h5: Some(TextStyleRefinement {
 228                font_size: Some(rems(0.95).into()),
 229                ..Default::default()
 230            }),
 231            h6: Some(TextStyleRefinement {
 232                font_size: Some(rems(0.875).into()),
 233                ..Default::default()
 234            }),
 235        }),
 236        code_block: StyleRefinement {
 237            padding: EdgesRefinement {
 238                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 239                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 240                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 241                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 242            },
 243            background: Some(colors.editor_background.into()),
 244            text: Some(TextStyleRefinement {
 245                font_family: Some(theme_settings.buffer_font.family.clone()),
 246                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 247                font_features: Some(theme_settings.buffer_font.features.clone()),
 248                font_size: Some(buffer_font_size.into()),
 249                ..Default::default()
 250            }),
 251            ..Default::default()
 252        },
 253        inline_code: TextStyleRefinement {
 254            font_family: Some(theme_settings.buffer_font.family.clone()),
 255            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 256            font_features: Some(theme_settings.buffer_font.features.clone()),
 257            font_size: Some(buffer_font_size.into()),
 258            background_color: Some(colors.editor_foreground.opacity(0.08)),
 259            ..Default::default()
 260        },
 261        link: TextStyleRefinement {
 262            background_color: Some(colors.editor_foreground.opacity(0.025)),
 263            underline: Some(UnderlineStyle {
 264                color: Some(colors.text_accent.opacity(0.5)),
 265                thickness: px(1.),
 266                ..Default::default()
 267            }),
 268            ..Default::default()
 269        },
 270        link_callback: Some(Rc::new(move |url, cx| {
 271            if MentionLink::is_valid(url) {
 272                let colors = cx.theme().colors();
 273                Some(TextStyleRefinement {
 274                    background_color: Some(colors.element_background),
 275                    ..Default::default()
 276                })
 277            } else {
 278                None
 279            }
 280        })),
 281        ..Default::default()
 282    }
 283}
 284
 285fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 286    let theme_settings = ThemeSettings::get_global(cx);
 287    let colors = cx.theme().colors();
 288    let ui_font_size = TextSize::Default.rems(cx);
 289    let buffer_font_size = TextSize::Small.rems(cx);
 290    let mut text_style = window.text_style();
 291
 292    text_style.refine(&TextStyleRefinement {
 293        font_family: Some(theme_settings.ui_font.family.clone()),
 294        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 295        font_features: Some(theme_settings.ui_font.features.clone()),
 296        font_size: Some(ui_font_size.into()),
 297        color: Some(cx.theme().colors().text),
 298        ..Default::default()
 299    });
 300
 301    MarkdownStyle {
 302        base_text_style: text_style,
 303        syntax: cx.theme().syntax().clone(),
 304        selection_background_color: cx.theme().players().local().selection,
 305        code_block_overflow_x_scroll: false,
 306        code_block: StyleRefinement {
 307            margin: EdgesRefinement::default(),
 308            padding: EdgesRefinement::default(),
 309            background: Some(colors.editor_background.into()),
 310            border_color: None,
 311            border_widths: EdgesRefinement::default(),
 312            text: Some(TextStyleRefinement {
 313                font_family: Some(theme_settings.buffer_font.family.clone()),
 314                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 315                font_features: Some(theme_settings.buffer_font.features.clone()),
 316                font_size: Some(buffer_font_size.into()),
 317                ..Default::default()
 318            }),
 319            ..Default::default()
 320        },
 321        inline_code: TextStyleRefinement {
 322            font_family: Some(theme_settings.buffer_font.family.clone()),
 323            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 324            font_features: Some(theme_settings.buffer_font.features.clone()),
 325            font_size: Some(TextSize::XSmall.rems(cx).into()),
 326            ..Default::default()
 327        },
 328        heading: StyleRefinement {
 329            text: Some(TextStyleRefinement {
 330                font_size: Some(ui_font_size.into()),
 331                ..Default::default()
 332            }),
 333            ..Default::default()
 334        },
 335        ..Default::default()
 336    }
 337}
 338
 339fn render_markdown_code_block(
 340    message_id: MessageId,
 341    ix: usize,
 342    kind: &CodeBlockKind,
 343    parsed_markdown: &ParsedMarkdown,
 344    metadata: CodeBlockMetadata,
 345    active_thread: Entity<ActiveThread>,
 346    workspace: WeakEntity<Workspace>,
 347    _window: &Window,
 348    cx: &App,
 349) -> Div {
 350    let label_size = rems(0.8125);
 351
 352    let label = match kind {
 353        CodeBlockKind::Indented => None,
 354        CodeBlockKind::Fenced => Some(
 355            h_flex()
 356                .px_1()
 357                .gap_1()
 358                .child(
 359                    Icon::new(IconName::Code)
 360                        .color(Color::Muted)
 361                        .size(IconSize::XSmall),
 362                )
 363                .child(div().text_size(label_size).child("Plain Text"))
 364                .into_any_element(),
 365        ),
 366        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 367            parsed_markdown.languages_by_name.get(raw_language_name),
 368            raw_language_name.clone(),
 369            cx,
 370        )),
 371        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 372            // We tell the model to use /dev/null for the path instead of using ```language
 373            // because otherwise it consistently fails to use code citations.
 374            if path_range.path.starts_with("/dev/null") {
 375                let ext = path_range
 376                    .path
 377                    .extension()
 378                    .and_then(OsStr::to_str)
 379                    .map(|str| SharedString::new(str.to_string()))
 380                    .unwrap_or_default();
 381
 382                render_code_language(
 383                    parsed_markdown
 384                        .languages_by_path
 385                        .get(&path_range.path)
 386                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 387                    ext,
 388                    cx,
 389                )
 390            } else {
 391                let content = if let Some(parent) = path_range.path.parent() {
 392                    let file_name = file_name.to_string_lossy().to_string();
 393                    let path = parent.to_string_lossy().to_string();
 394                    let path_and_file = format!("{}/{}", path, file_name);
 395
 396                    h_flex()
 397                        .id(("code-block-header-label", ix))
 398                        .ml_1()
 399                        .gap_1()
 400                        .child(div().text_size(label_size).child(file_name))
 401                        .child(Label::new(path).color(Color::Muted).size(LabelSize::Small))
 402                        .tooltip(move |window, cx| {
 403                            Tooltip::with_meta(
 404                                "Jump to File",
 405                                None,
 406                                path_and_file.clone(),
 407                                window,
 408                                cx,
 409                            )
 410                        })
 411                        .into_any_element()
 412                } else {
 413                    div()
 414                        .ml_1()
 415                        .text_size(label_size)
 416                        .child(path_range.path.to_string_lossy().to_string())
 417                        .into_any_element()
 418                };
 419
 420                h_flex()
 421                    .id(("code-block-header-button", ix))
 422                    .w_full()
 423                    .max_w_full()
 424                    .px_1()
 425                    .gap_0p5()
 426                    .cursor_pointer()
 427                    .rounded_sm()
 428                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 429                    .child(
 430                        h_flex()
 431                            .gap_0p5()
 432                            .children(
 433                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 434                                    .map(Icon::from_path)
 435                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 436                            )
 437                            .child(content)
 438                            .child(
 439                                Icon::new(IconName::ArrowUpRight)
 440                                    .size(IconSize::XSmall)
 441                                    .color(Color::Ignored),
 442                            ),
 443                    )
 444                    .on_click({
 445                        let path_range = path_range.clone();
 446                        move |_, window, cx| {
 447                            workspace
 448                                .update(cx, |workspace, cx| {
 449                                    open_path(&path_range, window, workspace, cx)
 450                                })
 451                                .ok();
 452                        }
 453                    })
 454                    .into_any_element()
 455            }
 456        }),
 457    };
 458
 459    let codeblock_was_copied = active_thread
 460        .read(cx)
 461        .copied_code_block_ids
 462        .contains(&(message_id, ix));
 463
 464    let is_expanded = active_thread.read(cx).is_codeblock_expanded(message_id, ix);
 465
 466    let codeblock_header_bg = cx
 467        .theme()
 468        .colors()
 469        .element_background
 470        .blend(cx.theme().colors().editor_foreground.opacity(0.025));
 471
 472    let control_buttons = h_flex()
 473        .visible_on_hover(CODEBLOCK_CONTAINER_GROUP)
 474        .absolute()
 475        .top_0()
 476        .right_0()
 477        .h_full()
 478        .bg(codeblock_header_bg)
 479        .rounded_tr_md()
 480        .px_1()
 481        .gap_1()
 482        .child(
 483            IconButton::new(
 484                ("copy-markdown-code", ix),
 485                if codeblock_was_copied {
 486                    IconName::Check
 487                } else {
 488                    IconName::Copy
 489                },
 490            )
 491            .icon_color(Color::Muted)
 492            .shape(ui::IconButtonShape::Square)
 493            .tooltip(Tooltip::text("Copy Code"))
 494            .on_click({
 495                let active_thread = active_thread.clone();
 496                let parsed_markdown = parsed_markdown.clone();
 497                let code_block_range = metadata.content_range.clone();
 498                move |_event, _window, cx| {
 499                    active_thread.update(cx, |this, cx| {
 500                        this.copied_code_block_ids.insert((message_id, ix));
 501
 502                        let code = parsed_markdown.source()[code_block_range.clone()].to_string();
 503                        cx.write_to_clipboard(ClipboardItem::new_string(code));
 504
 505                        cx.spawn(async move |this, cx| {
 506                            cx.background_executor().timer(Duration::from_secs(2)).await;
 507
 508                            cx.update(|cx| {
 509                                this.update(cx, |this, cx| {
 510                                    this.copied_code_block_ids.remove(&(message_id, ix));
 511                                    cx.notify();
 512                                })
 513                            })
 514                            .ok();
 515                        })
 516                        .detach();
 517                    });
 518                }
 519            }),
 520        )
 521        .child(
 522            IconButton::new(
 523                ("expand-collapse-code", ix),
 524                if is_expanded {
 525                    IconName::ChevronUp
 526                } else {
 527                    IconName::ChevronDown
 528                },
 529            )
 530            .icon_color(Color::Muted)
 531            .shape(ui::IconButtonShape::Square)
 532            .tooltip(Tooltip::text(if is_expanded {
 533                "Collapse Code"
 534            } else {
 535                "Expand Code"
 536            }))
 537            .on_click({
 538                let active_thread = active_thread.clone();
 539                move |_event, _window, cx| {
 540                    active_thread.update(cx, |this, cx| {
 541                        this.toggle_codeblock_expanded(message_id, ix);
 542                        cx.notify();
 543                    });
 544                }
 545            }),
 546        );
 547
 548    let codeblock_header = h_flex()
 549        .relative()
 550        .p_1()
 551        .gap_1()
 552        .justify_between()
 553        .bg(codeblock_header_bg)
 554        .map(|this| {
 555            if !is_expanded {
 556                this.rounded_md()
 557            } else {
 558                this.rounded_t_md()
 559                    .border_b_1()
 560                    .border_color(cx.theme().colors().border.opacity(0.6))
 561            }
 562        })
 563        .children(label)
 564        .child(control_buttons);
 565
 566    v_flex()
 567        .group(CODEBLOCK_CONTAINER_GROUP)
 568        .my_2()
 569        .overflow_hidden()
 570        .rounded_md()
 571        .border_1()
 572        .border_color(cx.theme().colors().border.opacity(0.6))
 573        .bg(cx.theme().colors().editor_background)
 574        .child(codeblock_header)
 575        .when(!is_expanded, |this| this.h(rems_from_px(31.)))
 576}
 577
 578fn open_path(
 579    path_range: &PathWithRange,
 580    window: &mut Window,
 581    workspace: &mut Workspace,
 582    cx: &mut Context<'_, Workspace>,
 583) {
 584    let Some(project_path) = workspace
 585        .project()
 586        .read(cx)
 587        .find_project_path(&path_range.path, cx)
 588    else {
 589        return; // TODO instead of just bailing out, open that path in a buffer.
 590    };
 591
 592    let Some(target) = path_range.range.as_ref().map(|range| {
 593        Point::new(
 594            // Line number is 1-based
 595            range.start.line.saturating_sub(1),
 596            range.start.col.unwrap_or(0),
 597        )
 598    }) else {
 599        return;
 600    };
 601    let open_task = workspace.open_path(project_path, None, true, window, cx);
 602    window
 603        .spawn(cx, async move |cx| {
 604            let item = open_task.await?;
 605            if let Some(active_editor) = item.downcast::<Editor>() {
 606                active_editor
 607                    .update_in(cx, |editor, window, cx| {
 608                        editor.go_to_singleton_buffer_point(target, window, cx);
 609                    })
 610                    .ok();
 611            }
 612            anyhow::Ok(())
 613        })
 614        .detach_and_log_err(cx);
 615}
 616
 617fn render_code_language(
 618    language: Option<&Arc<Language>>,
 619    name_fallback: SharedString,
 620    cx: &App,
 621) -> AnyElement {
 622    let icon_path = language.and_then(|language| {
 623        language
 624            .config()
 625            .matcher
 626            .path_suffixes
 627            .iter()
 628            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 629            .map(Icon::from_path)
 630    });
 631
 632    let language_label = language
 633        .map(|language| language.name().into())
 634        .unwrap_or(name_fallback);
 635
 636    let label_size = rems(0.8125);
 637
 638    h_flex()
 639        .px_1()
 640        .gap_1p5()
 641        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)))
 642        .child(div().text_size(label_size).child(language_label))
 643        .into_any_element()
 644}
 645
 646fn open_markdown_link(
 647    text: SharedString,
 648    workspace: WeakEntity<Workspace>,
 649    window: &mut Window,
 650    cx: &mut App,
 651) {
 652    let Some(workspace) = workspace.upgrade() else {
 653        cx.open_url(&text);
 654        return;
 655    };
 656
 657    match MentionLink::try_parse(&text, &workspace, cx) {
 658        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 659            if entry.is_dir() {
 660                workspace.project().update(cx, |_, cx| {
 661                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 662                })
 663            } else {
 664                workspace
 665                    .open_path(path, None, true, window, cx)
 666                    .detach_and_log_err(cx);
 667            }
 668        }),
 669        Some(MentionLink::Symbol(path, symbol_name)) => {
 670            let open_task = workspace.update(cx, |workspace, cx| {
 671                workspace.open_path(path, None, true, window, cx)
 672            });
 673            window
 674                .spawn(cx, async move |cx| {
 675                    let active_editor = open_task
 676                        .await?
 677                        .downcast::<Editor>()
 678                        .context("Item is not an editor")?;
 679                    active_editor.update_in(cx, |editor, window, cx| {
 680                        let symbol_range = editor
 681                            .buffer()
 682                            .read(cx)
 683                            .snapshot(cx)
 684                            .outline(None)
 685                            .and_then(|outline| {
 686                                outline
 687                                    .find_most_similar(&symbol_name)
 688                                    .map(|(_, item)| item.range.clone())
 689                            })
 690                            .context("Could not find matching symbol")?;
 691
 692                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 693                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 694                        });
 695                        anyhow::Ok(())
 696                    })
 697                })
 698                .detach_and_log_err(cx);
 699        }
 700        Some(MentionLink::Selection(path, line_range)) => {
 701            let open_task = workspace.update(cx, |workspace, cx| {
 702                workspace.open_path(path, None, true, window, cx)
 703            });
 704            window
 705                .spawn(cx, async move |cx| {
 706                    let active_editor = open_task
 707                        .await?
 708                        .downcast::<Editor>()
 709                        .context("Item is not an editor")?;
 710                    active_editor.update_in(cx, |editor, window, cx| {
 711                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 712                            s.select_ranges([Point::new(line_range.start as u32, 0)
 713                                ..Point::new(line_range.start as u32, 0)])
 714                        });
 715                        anyhow::Ok(())
 716                    })
 717                })
 718                .detach_and_log_err(cx);
 719        }
 720        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 721            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 722                panel.update(cx, |panel, cx| {
 723                    panel
 724                        .open_thread_by_id(&thread_id, window, cx)
 725                        .detach_and_log_err(cx)
 726                });
 727            }
 728        }),
 729        Some(MentionLink::TextThread(path)) => workspace.update(cx, |workspace, cx| {
 730            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 731                panel.update(cx, |panel, cx| {
 732                    panel
 733                        .open_saved_prompt_editor(path, window, cx)
 734                        .detach_and_log_err(cx);
 735                });
 736            }
 737        }),
 738        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 739        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
 740            Box::new(OpenRulesLibrary {
 741                prompt_to_select: Some(prompt_id.0),
 742            }),
 743            cx,
 744        ),
 745        None => cx.open_url(&text),
 746    }
 747}
 748
 749struct EditingMessageState {
 750    editor: Entity<Editor>,
 751    context_strip: Entity<ContextStrip>,
 752    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 753    last_estimated_token_count: Option<u64>,
 754    _subscriptions: [Subscription; 2],
 755    _update_token_count_task: Option<Task<()>>,
 756}
 757
 758impl ActiveThread {
 759    pub fn new(
 760        thread: Entity<Thread>,
 761        thread_store: Entity<ThreadStore>,
 762        text_thread_store: Entity<TextThreadStore>,
 763        context_store: Entity<ContextStore>,
 764        language_registry: Arc<LanguageRegistry>,
 765        workspace: WeakEntity<Workspace>,
 766        window: &mut Window,
 767        cx: &mut Context<Self>,
 768    ) -> Self {
 769        let subscriptions = vec![
 770            cx.observe(&thread, |_, _, cx| cx.notify()),
 771            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 772            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 773            cx.observe_global::<SettingsStore>(|_, cx| cx.notify()),
 774        ];
 775
 776        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 777            let this = cx.entity().downgrade();
 778            move |ix, window: &mut Window, cx: &mut App| {
 779                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 780                    .unwrap()
 781            }
 782        });
 783        let mut this = Self {
 784            language_registry,
 785            thread_store,
 786            text_thread_store,
 787            context_store,
 788            thread: thread.clone(),
 789            workspace,
 790            save_thread_task: None,
 791            messages: Vec::new(),
 792            rendered_messages_by_id: HashMap::default(),
 793            rendered_tool_uses: HashMap::default(),
 794            expanded_tool_uses: HashMap::default(),
 795            expanded_thinking_segments: HashMap::default(),
 796            expanded_code_blocks: HashMap::default(),
 797            list_state: list_state.clone(),
 798            scrollbar_state: ScrollbarState::new(list_state),
 799            show_scrollbar: false,
 800            hide_scrollbar_task: None,
 801            editing_message: None,
 802            last_error: None,
 803            copied_code_block_ids: HashSet::default(),
 804            notifications: Vec::new(),
 805            _subscriptions: subscriptions,
 806            notification_subscriptions: HashMap::default(),
 807            open_feedback_editors: HashMap::default(),
 808            _load_edited_message_context_task: None,
 809        };
 810
 811        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 812            let rendered_message = RenderedMessage::from_segments(
 813                &message.segments,
 814                this.language_registry.clone(),
 815                cx,
 816            );
 817            this.push_rendered_message(message.id, rendered_message);
 818
 819            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 820                this.render_tool_use_markdown(
 821                    tool_use.id.clone(),
 822                    tool_use.ui_text.clone(),
 823                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 824                    tool_use.status.text(),
 825                    cx,
 826                );
 827            }
 828        }
 829
 830        this
 831    }
 832
 833    pub fn thread(&self) -> &Entity<Thread> {
 834        &self.thread
 835    }
 836
 837    pub fn is_empty(&self) -> bool {
 838        self.messages.is_empty()
 839    }
 840
 841    pub fn summary<'a>(&'a self, cx: &'a App) -> &'a ThreadSummary {
 842        self.thread.read(cx).summary()
 843    }
 844
 845    pub fn regenerate_summary(&self, cx: &mut App) {
 846        self.thread.update(cx, |thread, cx| thread.summarize(cx))
 847    }
 848
 849    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 850        self.last_error.take();
 851        self.thread.update(cx, |thread, cx| {
 852            thread.cancel_last_completion(Some(window.window_handle()), cx)
 853        })
 854    }
 855
 856    pub fn last_error(&self) -> Option<ThreadError> {
 857        self.last_error.clone()
 858    }
 859
 860    pub fn clear_last_error(&mut self) {
 861        self.last_error.take();
 862    }
 863
 864    /// Returns the editing message id and the estimated token count in the content
 865    pub fn editing_message_id(&self) -> Option<(MessageId, u64)> {
 866        self.editing_message
 867            .as_ref()
 868            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 869    }
 870
 871    pub fn context_store(&self) -> &Entity<ContextStore> {
 872        &self.context_store
 873    }
 874
 875    pub fn thread_store(&self) -> &Entity<ThreadStore> {
 876        &self.thread_store
 877    }
 878
 879    pub fn text_thread_store(&self) -> &Entity<TextThreadStore> {
 880        &self.text_thread_store
 881    }
 882
 883    fn push_rendered_message(&mut self, id: MessageId, rendered_message: RenderedMessage) {
 884        let old_len = self.messages.len();
 885        self.messages.push(id);
 886        self.list_state.splice(old_len..old_len, 1);
 887        self.rendered_messages_by_id.insert(id, rendered_message);
 888    }
 889
 890    fn deleted_message(&mut self, id: &MessageId) {
 891        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 892            return;
 893        };
 894        self.messages.remove(index);
 895        self.list_state.splice(index..index + 1, 0);
 896        self.rendered_messages_by_id.remove(id);
 897    }
 898
 899    fn render_tool_use_markdown(
 900        &mut self,
 901        tool_use_id: LanguageModelToolUseId,
 902        tool_label: impl Into<SharedString>,
 903        tool_input: &str,
 904        tool_output: SharedString,
 905        cx: &mut Context<Self>,
 906    ) {
 907        let rendered = self
 908            .rendered_tool_uses
 909            .entry(tool_use_id.clone())
 910            .or_insert_with(|| RenderedToolUse {
 911                label: cx.new(|cx| {
 912                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 913                }),
 914                input: cx.new(|cx| {
 915                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 916                }),
 917                output: cx.new(|cx| {
 918                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 919                }),
 920            });
 921
 922        rendered.label.update(cx, |this, cx| {
 923            this.replace(tool_label, cx);
 924        });
 925        rendered.input.update(cx, |this, cx| {
 926            this.replace(
 927                MarkdownCodeBlock {
 928                    tag: "json",
 929                    text: tool_input,
 930                }
 931                .to_string(),
 932                cx,
 933            );
 934        });
 935        rendered.output.update(cx, |this, cx| {
 936            this.replace(tool_output, cx);
 937        });
 938    }
 939
 940    fn handle_thread_event(
 941        &mut self,
 942        _thread: &Entity<Thread>,
 943        event: &ThreadEvent,
 944        window: &mut Window,
 945        cx: &mut Context<Self>,
 946    ) {
 947        match event {
 948            ThreadEvent::CancelEditing => {
 949                if self.editing_message.is_some() {
 950                    self.cancel_editing_message(&menu::Cancel, window, cx);
 951                }
 952            }
 953            ThreadEvent::ShowError(error) => {
 954                self.last_error = Some(error.clone());
 955            }
 956            ThreadEvent::NewRequest => {
 957                cx.notify();
 958            }
 959            ThreadEvent::CompletionCanceled => {
 960                self.thread.update(cx, |thread, cx| {
 961                    thread.project().update(cx, |project, cx| {
 962                        project.set_agent_location(None, cx);
 963                    })
 964                });
 965                self.workspace
 966                    .update(cx, |workspace, cx| {
 967                        if workspace.is_being_followed(CollaboratorId::Agent) {
 968                            workspace.unfollow(CollaboratorId::Agent, window, cx);
 969                        }
 970                    })
 971                    .ok();
 972                cx.notify();
 973            }
 974            ThreadEvent::StreamedCompletion
 975            | ThreadEvent::SummaryGenerated
 976            | ThreadEvent::SummaryChanged => {
 977                self.save_thread(cx);
 978            }
 979            ThreadEvent::Stopped(reason) => match reason {
 980                Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 981                    let used_tools = self.thread.read(cx).used_tools_since_last_user_message();
 982                    self.play_notification_sound(window, cx);
 983                    self.show_notification(
 984                        if used_tools {
 985                            "Finished running tools"
 986                        } else {
 987                            "New message"
 988                        },
 989                        IconName::ZedAssistant,
 990                        window,
 991                        cx,
 992                    );
 993                }
 994                _ => {}
 995            },
 996            ThreadEvent::ToolConfirmationNeeded => {
 997                self.play_notification_sound(window, cx);
 998                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 999            }
1000            ThreadEvent::ToolUseLimitReached => {
1001                self.play_notification_sound(window, cx);
1002                self.show_notification(
1003                    "Consecutive tool use limit reached.",
1004                    IconName::Warning,
1005                    window,
1006                    cx,
1007                );
1008            }
1009            ThreadEvent::StreamedAssistantText(message_id, text) => {
1010                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
1011                    rendered_message.append_text(text, cx);
1012                }
1013            }
1014            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
1015                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
1016                    rendered_message.append_thinking(text, cx);
1017                }
1018            }
1019            ThreadEvent::MessageAdded(message_id) => {
1020                if let Some(rendered_message) = self.thread.update(cx, |thread, cx| {
1021                    thread.message(*message_id).map(|message| {
1022                        RenderedMessage::from_segments(
1023                            &message.segments,
1024                            self.language_registry.clone(),
1025                            cx,
1026                        )
1027                    })
1028                }) {
1029                    self.push_rendered_message(*message_id, rendered_message);
1030                }
1031
1032                self.save_thread(cx);
1033                cx.notify();
1034            }
1035            ThreadEvent::MessageEdited(message_id) => {
1036                if let Some(index) = self.messages.iter().position(|id| id == message_id) {
1037                    if let Some(rendered_message) = self.thread.update(cx, |thread, cx| {
1038                        thread.message(*message_id).map(|message| {
1039                            let mut rendered_message = RenderedMessage {
1040                                language_registry: self.language_registry.clone(),
1041                                segments: Vec::with_capacity(message.segments.len()),
1042                            };
1043                            for segment in &message.segments {
1044                                rendered_message.push_segment(segment, cx);
1045                            }
1046                            rendered_message
1047                        })
1048                    }) {
1049                        self.list_state.splice(index..index + 1, 1);
1050                        self.rendered_messages_by_id
1051                            .insert(*message_id, rendered_message);
1052                        self.scroll_to_bottom(cx);
1053                        self.save_thread(cx);
1054                        cx.notify();
1055                    }
1056                }
1057            }
1058            ThreadEvent::MessageDeleted(message_id) => {
1059                self.deleted_message(message_id);
1060                self.save_thread(cx);
1061                cx.notify();
1062            }
1063            ThreadEvent::UsePendingTools { tool_uses } => {
1064                for tool_use in tool_uses {
1065                    self.render_tool_use_markdown(
1066                        tool_use.id.clone(),
1067                        tool_use.ui_text.clone(),
1068                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1069                        "".into(),
1070                        cx,
1071                    );
1072                }
1073            }
1074            ThreadEvent::StreamedToolUse {
1075                tool_use_id,
1076                ui_text,
1077                input,
1078            } => {
1079                self.render_tool_use_markdown(
1080                    tool_use_id.clone(),
1081                    ui_text.clone(),
1082                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1083                    "".into(),
1084                    cx,
1085                );
1086            }
1087            ThreadEvent::ToolFinished {
1088                pending_tool_use, ..
1089            } => {
1090                if let Some(tool_use) = pending_tool_use {
1091                    self.render_tool_use_markdown(
1092                        tool_use.id.clone(),
1093                        tool_use.ui_text.clone(),
1094                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1095                        self.thread
1096                            .read(cx)
1097                            .output_for_tool(&tool_use.id)
1098                            .map(|output| output.clone().into())
1099                            .unwrap_or("".into()),
1100                        cx,
1101                    );
1102                }
1103            }
1104            ThreadEvent::CheckpointChanged => cx.notify(),
1105            ThreadEvent::ReceivedTextChunk => {}
1106            ThreadEvent::InvalidToolInput {
1107                tool_use_id,
1108                ui_text,
1109                invalid_input_json,
1110            } => {
1111                self.render_tool_use_markdown(
1112                    tool_use_id.clone(),
1113                    ui_text,
1114                    invalid_input_json,
1115                    self.thread
1116                        .read(cx)
1117                        .output_for_tool(tool_use_id)
1118                        .map(|output| output.clone().into())
1119                        .unwrap_or("".into()),
1120                    cx,
1121                );
1122            }
1123            ThreadEvent::MissingToolUse {
1124                tool_use_id,
1125                ui_text,
1126            } => {
1127                self.render_tool_use_markdown(
1128                    tool_use_id.clone(),
1129                    ui_text,
1130                    "",
1131                    self.thread
1132                        .read(cx)
1133                        .output_for_tool(tool_use_id)
1134                        .map(|output| output.clone().into())
1135                        .unwrap_or("".into()),
1136                    cx,
1137                );
1138            }
1139            ThreadEvent::ProfileChanged => {
1140                self.save_thread(cx);
1141                cx.notify();
1142            }
1143        }
1144    }
1145
1146    fn handle_rules_loading_error(
1147        &mut self,
1148        _thread_store: Entity<ThreadStore>,
1149        error: &RulesLoadingError,
1150        cx: &mut Context<Self>,
1151    ) {
1152        self.last_error = Some(ThreadError::Message {
1153            header: "Error loading rules file".into(),
1154            message: error.message.clone(),
1155        });
1156        cx.notify();
1157    }
1158
1159    fn play_notification_sound(&self, window: &Window, cx: &mut App) {
1160        let settings = AgentSettings::get_global(cx);
1161        if settings.play_sound_when_agent_done && !window.is_window_active() {
1162            Audio::play_sound(Sound::AgentDone, cx);
1163        }
1164    }
1165
1166    fn show_notification(
1167        &mut self,
1168        caption: impl Into<SharedString>,
1169        icon: IconName,
1170        window: &mut Window,
1171        cx: &mut Context<ActiveThread>,
1172    ) {
1173        if window.is_window_active() || !self.notifications.is_empty() {
1174            return;
1175        }
1176
1177        let title = self.thread.read(cx).summary().unwrap_or("Agent Panel");
1178
1179        match AgentSettings::get_global(cx).notify_when_agent_waiting {
1180            NotifyWhenAgentWaiting::PrimaryScreen => {
1181                if let Some(primary) = cx.primary_display() {
1182                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1183                }
1184            }
1185            NotifyWhenAgentWaiting::AllScreens => {
1186                let caption = caption.into();
1187                for screen in cx.displays() {
1188                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1189                }
1190            }
1191            NotifyWhenAgentWaiting::Never => {
1192                // Don't show anything
1193            }
1194        }
1195    }
1196
1197    fn pop_up(
1198        &mut self,
1199        icon: IconName,
1200        caption: SharedString,
1201        title: SharedString,
1202        window: &mut Window,
1203        screen: Rc<dyn PlatformDisplay>,
1204        cx: &mut Context<'_, ActiveThread>,
1205    ) {
1206        let options = AgentNotification::window_options(screen, cx);
1207
1208        let project_name = self.workspace.upgrade().and_then(|workspace| {
1209            workspace
1210                .read(cx)
1211                .project()
1212                .read(cx)
1213                .visible_worktrees(cx)
1214                .next()
1215                .map(|worktree| worktree.read(cx).root_name().to_string())
1216        });
1217
1218        if let Some(screen_window) = cx
1219            .open_window(options, |_, cx| {
1220                cx.new(|_| {
1221                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1222                })
1223            })
1224            .log_err()
1225        {
1226            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1227                self.notification_subscriptions
1228                    .entry(screen_window)
1229                    .or_insert_with(Vec::new)
1230                    .push(cx.subscribe_in(&pop_up, window, {
1231                        |this, _, event, window, cx| match event {
1232                            AgentNotificationEvent::Accepted => {
1233                                let handle = window.window_handle();
1234                                cx.activate(true);
1235
1236                                let workspace_handle = this.workspace.clone();
1237
1238                                // If there are multiple Zed windows, activate the correct one.
1239                                cx.defer(move |cx| {
1240                                    handle
1241                                        .update(cx, |_view, window, _cx| {
1242                                            window.activate_window();
1243
1244                                            if let Some(workspace) = workspace_handle.upgrade() {
1245                                                workspace.update(_cx, |workspace, cx| {
1246                                                    workspace.focus_panel::<AgentPanel>(window, cx);
1247                                                });
1248                                            }
1249                                        })
1250                                        .log_err();
1251                                });
1252
1253                                this.dismiss_notifications(cx);
1254                            }
1255                            AgentNotificationEvent::Dismissed => {
1256                                this.dismiss_notifications(cx);
1257                            }
1258                        }
1259                    }));
1260
1261                self.notifications.push(screen_window);
1262
1263                // If the user manually refocuses the original window, dismiss the popup.
1264                self.notification_subscriptions
1265                    .entry(screen_window)
1266                    .or_insert_with(Vec::new)
1267                    .push({
1268                        let pop_up_weak = pop_up.downgrade();
1269
1270                        cx.observe_window_activation(window, move |_, window, cx| {
1271                            if window.is_window_active() {
1272                                if let Some(pop_up) = pop_up_weak.upgrade() {
1273                                    pop_up.update(cx, |_, cx| {
1274                                        cx.emit(AgentNotificationEvent::Dismissed);
1275                                    });
1276                                }
1277                            }
1278                        })
1279                    });
1280            }
1281        }
1282    }
1283
1284    /// Spawns a task to save the active thread.
1285    ///
1286    /// Only one task to save the thread will be in flight at a time.
1287    fn save_thread(&mut self, cx: &mut Context<Self>) {
1288        let thread = self.thread.clone();
1289        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1290            let task = this
1291                .update(cx, |this, cx| {
1292                    this.thread_store
1293                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1294                })
1295                .ok();
1296
1297            if let Some(task) = task {
1298                task.await.log_err();
1299            }
1300        }));
1301    }
1302
1303    fn start_editing_message(
1304        &mut self,
1305        message_id: MessageId,
1306        message_text: impl Into<Arc<str>>,
1307        message_creases: &[MessageCrease],
1308        window: &mut Window,
1309        cx: &mut Context<Self>,
1310    ) {
1311        let editor = crate::message_editor::create_editor(
1312            self.workspace.clone(),
1313            self.context_store.downgrade(),
1314            self.thread_store.downgrade(),
1315            self.text_thread_store.downgrade(),
1316            EDIT_PREVIOUS_MESSAGE_MIN_LINES,
1317            None,
1318            window,
1319            cx,
1320        );
1321        editor.update(cx, |editor, cx| {
1322            editor.set_text(message_text, window, cx);
1323            insert_message_creases(editor, message_creases, &self.context_store, window, cx);
1324            editor.focus_handle(cx).focus(window);
1325            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1326        });
1327        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1328            EditorEvent::BufferEdited => {
1329                this.update_editing_message_token_count(true, cx);
1330            }
1331            _ => {}
1332        });
1333
1334        let context_picker_menu_handle = PopoverMenuHandle::default();
1335        let context_strip = cx.new(|cx| {
1336            ContextStrip::new(
1337                self.context_store.clone(),
1338                self.workspace.clone(),
1339                Some(self.thread_store.downgrade()),
1340                Some(self.text_thread_store.downgrade()),
1341                context_picker_menu_handle.clone(),
1342                SuggestContextKind::File,
1343                ModelUsageContext::Thread(self.thread.clone()),
1344                window,
1345                cx,
1346            )
1347        });
1348
1349        let context_strip_subscription =
1350            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1351
1352        self.editing_message = Some((
1353            message_id,
1354            EditingMessageState {
1355                editor: editor.clone(),
1356                context_strip,
1357                context_picker_menu_handle,
1358                last_estimated_token_count: None,
1359                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1360                _update_token_count_task: None,
1361            },
1362        ));
1363        self.update_editing_message_token_count(false, cx);
1364        cx.notify();
1365    }
1366
1367    fn handle_context_strip_event(
1368        &mut self,
1369        _context_strip: &Entity<ContextStrip>,
1370        event: &ContextStripEvent,
1371        window: &mut Window,
1372        cx: &mut Context<Self>,
1373    ) {
1374        if let Some((_, state)) = self.editing_message.as_ref() {
1375            match event {
1376                ContextStripEvent::PickerDismissed
1377                | ContextStripEvent::BlurredEmpty
1378                | ContextStripEvent::BlurredDown => {
1379                    let editor_focus_handle = state.editor.focus_handle(cx);
1380                    window.focus(&editor_focus_handle);
1381                }
1382                ContextStripEvent::BlurredUp => {}
1383            }
1384        }
1385    }
1386
1387    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1388        let Some((message_id, state)) = self.editing_message.as_mut() else {
1389            return;
1390        };
1391
1392        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1393        state._update_token_count_task.take();
1394
1395        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1396            state.last_estimated_token_count.take();
1397            return;
1398        };
1399
1400        let editor = state.editor.clone();
1401        let thread = self.thread.clone();
1402        let message_id = *message_id;
1403
1404        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1405            if debounce {
1406                cx.background_executor()
1407                    .timer(Duration::from_millis(200))
1408                    .await;
1409            }
1410
1411            let token_count = if let Some(task) = cx
1412                .update(|cx| {
1413                    let Some(message) = thread.read(cx).message(message_id) else {
1414                        log::error!("Message that was being edited no longer exists");
1415                        return None;
1416                    };
1417                    let message_text = editor.read(cx).text(cx);
1418
1419                    if message_text.is_empty() && message.loaded_context.is_empty() {
1420                        return None;
1421                    }
1422
1423                    let mut request_message = LanguageModelRequestMessage {
1424                        role: language_model::Role::User,
1425                        content: Vec::new(),
1426                        cache: false,
1427                    };
1428
1429                    message
1430                        .loaded_context
1431                        .add_to_request_message(&mut request_message);
1432
1433                    if !message_text.is_empty() {
1434                        request_message
1435                            .content
1436                            .push(MessageContent::Text(message_text));
1437                    }
1438
1439                    let request = language_model::LanguageModelRequest {
1440                        thread_id: None,
1441                        prompt_id: None,
1442                        intent: None,
1443                        mode: None,
1444                        messages: vec![request_message],
1445                        tools: vec![],
1446                        tool_choice: None,
1447                        stop: vec![],
1448                        temperature: AgentSettings::temperature_for_model(
1449                            &configured_model.model,
1450                            cx,
1451                        ),
1452                    };
1453
1454                    Some(configured_model.model.count_tokens(request, cx))
1455                })
1456                .ok()
1457                .flatten()
1458            {
1459                task.await.log_err()
1460            } else {
1461                Some(0)
1462            };
1463
1464            if let Some(token_count) = token_count {
1465                this.update(cx, |this, cx| {
1466                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1467                        return;
1468                    };
1469
1470                    state.last_estimated_token_count = Some(token_count);
1471                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1472                })
1473                .ok();
1474            };
1475        }));
1476    }
1477
1478    fn toggle_context_picker(
1479        &mut self,
1480        _: &crate::ToggleContextPicker,
1481        window: &mut Window,
1482        cx: &mut Context<Self>,
1483    ) {
1484        if let Some((_, state)) = self.editing_message.as_mut() {
1485            let handle = state.context_picker_menu_handle.clone();
1486            window.defer(cx, move |window, cx| {
1487                handle.toggle(window, cx);
1488            });
1489        }
1490    }
1491
1492    fn remove_all_context(
1493        &mut self,
1494        _: &crate::RemoveAllContext,
1495        _window: &mut Window,
1496        cx: &mut Context<Self>,
1497    ) {
1498        self.context_store.update(cx, |store, cx| store.clear(cx));
1499        cx.notify();
1500    }
1501
1502    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1503        if let Some((_, state)) = self.editing_message.as_mut() {
1504            if state.context_picker_menu_handle.is_deployed() {
1505                cx.propagate();
1506            } else {
1507                state.context_strip.focus_handle(cx).focus(window);
1508            }
1509        }
1510    }
1511
1512    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1513        attach_pasted_images_as_context(&self.context_store, cx);
1514    }
1515
1516    fn cancel_editing_message(
1517        &mut self,
1518        _: &menu::Cancel,
1519        window: &mut Window,
1520        cx: &mut Context<Self>,
1521    ) {
1522        self.editing_message.take();
1523        cx.notify();
1524
1525        if let Some(workspace) = self.workspace.upgrade() {
1526            workspace.update(cx, |workspace, cx| {
1527                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
1528                    panel.focus_handle(cx).focus(window);
1529                }
1530            });
1531        }
1532    }
1533
1534    fn confirm_editing_message(
1535        &mut self,
1536        _: &menu::Confirm,
1537        window: &mut Window,
1538        cx: &mut Context<Self>,
1539    ) {
1540        let Some((message_id, state)) = self.editing_message.take() else {
1541            return;
1542        };
1543
1544        let Some(model) = self
1545            .thread
1546            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1547        else {
1548            return;
1549        };
1550
1551        if model.provider.must_accept_terms(cx) {
1552            cx.notify();
1553            return;
1554        }
1555
1556        let edited_text = state.editor.read(cx).text(cx);
1557
1558        let creases = state.editor.update(cx, extract_message_creases);
1559
1560        let new_context = self
1561            .context_store
1562            .read(cx)
1563            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1564
1565        let project = self.thread.read(cx).project().clone();
1566        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1567
1568        let git_store = project.read(cx).git_store().clone();
1569        let checkpoint = git_store.update(cx, |git_store, cx| git_store.checkpoint(cx));
1570
1571        let load_context_task = context::load_context(new_context, &project, &prompt_store, cx);
1572        self._load_edited_message_context_task =
1573            Some(cx.spawn_in(window, async move |this, cx| {
1574                let (context, checkpoint) =
1575                    futures::future::join(load_context_task, checkpoint).await;
1576                let _ = this
1577                    .update_in(cx, |this, window, cx| {
1578                        this.thread.update(cx, |thread, cx| {
1579                            thread.edit_message(
1580                                message_id,
1581                                Role::User,
1582                                vec![MessageSegment::Text(edited_text)],
1583                                creases,
1584                                Some(context.loaded_context),
1585                                checkpoint.ok(),
1586                                cx,
1587                            );
1588                            for message_id in this.messages_after(message_id) {
1589                                thread.delete_message(*message_id, cx);
1590                            }
1591                        });
1592
1593                        this.thread.update(cx, |thread, cx| {
1594                            thread.advance_prompt_id();
1595                            thread.cancel_last_completion(Some(window.window_handle()), cx);
1596                            thread.send_to_model(
1597                                model.model,
1598                                CompletionIntent::UserPrompt,
1599                                Some(window.window_handle()),
1600                                cx,
1601                            );
1602                        });
1603                        this._load_edited_message_context_task = None;
1604                        cx.notify();
1605                    })
1606                    .log_err();
1607            }));
1608
1609        if let Some(workspace) = self.workspace.upgrade() {
1610            workspace.update(cx, |workspace, cx| {
1611                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
1612                    panel.focus_handle(cx).focus(window);
1613                }
1614            });
1615        }
1616    }
1617
1618    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1619        self.messages
1620            .iter()
1621            .position(|id| *id == message_id)
1622            .map(|index| &self.messages[index + 1..])
1623            .unwrap_or(&[])
1624    }
1625
1626    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1627        self.cancel_editing_message(&menu::Cancel, window, cx);
1628    }
1629
1630    fn handle_regenerate_click(
1631        &mut self,
1632        _: &ClickEvent,
1633        window: &mut Window,
1634        cx: &mut Context<Self>,
1635    ) {
1636        self.confirm_editing_message(&menu::Confirm, window, cx);
1637    }
1638
1639    fn handle_feedback_click(
1640        &mut self,
1641        message_id: MessageId,
1642        feedback: ThreadFeedback,
1643        window: &mut Window,
1644        cx: &mut Context<Self>,
1645    ) {
1646        let report = self.thread.update(cx, |thread, cx| {
1647            thread.report_message_feedback(message_id, feedback, cx)
1648        });
1649
1650        cx.spawn(async move |this, cx| {
1651            report.await?;
1652            this.update(cx, |_this, cx| cx.notify())
1653        })
1654        .detach_and_log_err(cx);
1655
1656        match feedback {
1657            ThreadFeedback::Positive => {
1658                self.open_feedback_editors.remove(&message_id);
1659            }
1660            ThreadFeedback::Negative => {
1661                self.handle_show_feedback_comments(message_id, window, cx);
1662            }
1663        }
1664    }
1665
1666    fn handle_show_feedback_comments(
1667        &mut self,
1668        message_id: MessageId,
1669        window: &mut Window,
1670        cx: &mut Context<Self>,
1671    ) {
1672        let buffer = cx.new(|cx| {
1673            let empty_string = String::new();
1674            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1675        });
1676
1677        let editor = cx.new(|cx| {
1678            let mut editor = Editor::new(
1679                editor::EditorMode::AutoHeight {
1680                    min_lines: 1,
1681                    max_lines: Some(4),
1682                },
1683                buffer,
1684                None,
1685                window,
1686                cx,
1687            );
1688            editor.set_placeholder_text(
1689                "What went wrong? Share your feedback so we can improve.",
1690                cx,
1691            );
1692            editor
1693        });
1694
1695        editor.read(cx).focus_handle(cx).focus(window);
1696        self.open_feedback_editors.insert(message_id, editor);
1697        cx.notify();
1698    }
1699
1700    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1701        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1702            return;
1703        };
1704
1705        let report_task = self.thread.update(cx, |thread, cx| {
1706            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1707        });
1708
1709        let comments = editor.read(cx).text(cx);
1710        if !comments.is_empty() {
1711            let thread_id = self.thread.read(cx).id().clone();
1712            let comments_value = String::from(comments.as_str());
1713
1714            let message_content = self
1715                .thread
1716                .read(cx)
1717                .message(message_id)
1718                .map(|msg| msg.to_string())
1719                .unwrap_or_default();
1720
1721            telemetry::event!(
1722                "Assistant Thread Feedback Comments",
1723                thread_id,
1724                message_id = message_id.as_usize(),
1725                message_content,
1726                comments = comments_value
1727            );
1728
1729            self.open_feedback_editors.remove(&message_id);
1730
1731            cx.spawn(async move |this, cx| {
1732                report_task.await?;
1733                this.update(cx, |_this, cx| cx.notify())
1734            })
1735            .detach_and_log_err(cx);
1736        }
1737    }
1738
1739    fn render_edit_message_editor(
1740        &self,
1741        state: &EditingMessageState,
1742        _window: &mut Window,
1743        cx: &Context<Self>,
1744    ) -> impl IntoElement {
1745        let settings = ThemeSettings::get_global(cx);
1746        let font_size = TextSize::Small
1747            .rems(cx)
1748            .to_pixels(settings.agent_font_size(cx));
1749        let line_height = font_size * 1.75;
1750
1751        let colors = cx.theme().colors();
1752
1753        let text_style = TextStyle {
1754            color: colors.text,
1755            font_family: settings.buffer_font.family.clone(),
1756            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1757            font_features: settings.buffer_font.features.clone(),
1758            font_size: font_size.into(),
1759            line_height: line_height.into(),
1760            ..Default::default()
1761        };
1762
1763        v_flex()
1764            .key_context("EditMessageEditor")
1765            .on_action(cx.listener(Self::toggle_context_picker))
1766            .on_action(cx.listener(Self::remove_all_context))
1767            .on_action(cx.listener(Self::move_up))
1768            .on_action(cx.listener(Self::cancel_editing_message))
1769            .on_action(cx.listener(Self::confirm_editing_message))
1770            .capture_action(cx.listener(Self::paste))
1771            .min_h_6()
1772            .w_full()
1773            .flex_grow()
1774            .gap_2()
1775            .child(state.context_strip.clone())
1776            .child(div().pt(px(-3.)).px_neg_0p5().child(EditorElement::new(
1777                &state.editor,
1778                EditorStyle {
1779                    background: colors.editor_background,
1780                    local_player: cx.theme().players().local(),
1781                    text: text_style,
1782                    syntax: cx.theme().syntax().clone(),
1783                    ..Default::default()
1784                },
1785            )))
1786    }
1787
1788    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1789        let message_id = self.messages[ix];
1790        let workspace = self.workspace.clone();
1791        let thread = self.thread.read(cx);
1792
1793        let is_first_message = ix == 0;
1794        let is_last_message = ix == self.messages.len() - 1;
1795
1796        let Some(message) = thread.message(message_id) else {
1797            return Empty.into_any();
1798        };
1799
1800        let is_generating = thread.is_generating();
1801        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1802
1803        let loading_dots = (is_generating && is_last_message).then(|| {
1804            h_flex()
1805                .h_8()
1806                .my_3()
1807                .mx_5()
1808                .when(is_generating_stale || message.is_hidden, |this| {
1809                    this.child(AnimatedLabel::new("").size(LabelSize::Small))
1810                })
1811        });
1812
1813        if message.is_hidden {
1814            return div().children(loading_dots).into_any();
1815        }
1816
1817        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1818            return Empty.into_any();
1819        };
1820
1821        // Get all the data we need from thread before we start using it in closures
1822        let checkpoint = thread.checkpoint_for_message(message_id);
1823        let configured_model = thread.configured_model().map(|m| m.model);
1824        let added_context = thread
1825            .context_for_message(message_id)
1826            .map(|context| AddedContext::new_attached(context, configured_model.as_ref(), cx))
1827            .collect::<Vec<_>>();
1828
1829        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1830        let has_tool_uses = !tool_uses.is_empty();
1831
1832        let editing_message_state = self
1833            .editing_message
1834            .as_ref()
1835            .filter(|(id, _)| *id == message_id)
1836            .map(|(_, state)| state);
1837
1838        let colors = cx.theme().colors();
1839        let editor_bg_color = colors.editor_background;
1840        let panel_bg = colors.panel_background;
1841
1842        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::DocumentText)
1843            .icon_size(IconSize::XSmall)
1844            .icon_color(Color::Ignored)
1845            .tooltip(Tooltip::text("Open Thread as Markdown"))
1846            .on_click({
1847                let thread = self.thread.clone();
1848                let workspace = self.workspace.clone();
1849                move |_, window, cx| {
1850                    if let Some(workspace) = workspace.upgrade() {
1851                        open_active_thread_as_markdown(thread.clone(), workspace, window, cx)
1852                            .detach_and_log_err(cx);
1853                    }
1854                }
1855            });
1856
1857        let scroll_to_top = IconButton::new(("scroll_to_top", ix), IconName::ArrowUpAlt)
1858            .icon_size(IconSize::XSmall)
1859            .icon_color(Color::Ignored)
1860            .tooltip(Tooltip::text("Scroll To Top"))
1861            .on_click(cx.listener(move |this, _, _, cx| {
1862                this.scroll_to_top(cx);
1863            }));
1864
1865        // For all items that should be aligned with the LLM's response.
1866        const RESPONSE_PADDING_X: Pixels = px(19.);
1867
1868        let show_feedback = thread.is_turn_end(ix);
1869        let feedback_container = h_flex()
1870            .group("feedback_container")
1871            .mt_1()
1872            .py_2()
1873            .px(RESPONSE_PADDING_X)
1874            .mr_1()
1875            .opacity(0.4)
1876            .hover(|style| style.opacity(1.))
1877            .gap_1p5()
1878            .flex_wrap()
1879            .justify_end();
1880        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1881            Some(feedback) => feedback_container
1882                .child(
1883                    div().visible_on_hover("feedback_container").child(
1884                        Label::new(match feedback {
1885                            ThreadFeedback::Positive => "Thanks for your feedback!",
1886                            ThreadFeedback::Negative => {
1887                                "We appreciate your feedback and will use it to improve."
1888                            }
1889                        })
1890                    .color(Color::Muted)
1891                    .size(LabelSize::XSmall)
1892                    .truncate())
1893                )
1894                .child(
1895                    h_flex()
1896                        .child(
1897                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1898                                .icon_size(IconSize::XSmall)
1899                                .icon_color(match feedback {
1900                                    ThreadFeedback::Positive => Color::Accent,
1901                                    ThreadFeedback::Negative => Color::Ignored,
1902                                })
1903                                .tooltip(Tooltip::text("Helpful Response"))
1904                                .on_click(cx.listener(move |this, _, window, cx| {
1905                                    this.handle_feedback_click(
1906                                        message_id,
1907                                        ThreadFeedback::Positive,
1908                                        window,
1909                                        cx,
1910                                    );
1911                                })),
1912                        )
1913                        .child(
1914                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1915                                .icon_size(IconSize::XSmall)
1916                                .icon_color(match feedback {
1917                                    ThreadFeedback::Positive => Color::Ignored,
1918                                    ThreadFeedback::Negative => Color::Accent,
1919                                })
1920                                .tooltip(Tooltip::text("Not Helpful"))
1921                                .on_click(cx.listener(move |this, _, window, cx| {
1922                                    this.handle_feedback_click(
1923                                        message_id,
1924                                        ThreadFeedback::Negative,
1925                                        window,
1926                                        cx,
1927                                    );
1928                                })),
1929                        )
1930                        .child(open_as_markdown),
1931                )
1932                .into_any_element(),
1933            None if AgentSettings::get_global(cx).enable_feedback =>
1934                feedback_container
1935                .child(
1936                    div().visible_on_hover("feedback_container").child(
1937                        Label::new(
1938                            "Rating the thread sends all of your current conversation to the Zed team.",
1939                        )
1940                        .color(Color::Muted)
1941                    .size(LabelSize::XSmall)
1942                    .truncate())
1943                )
1944                .child(
1945                    h_flex()
1946                        .child(
1947                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1948                                .icon_size(IconSize::XSmall)
1949                                .icon_color(Color::Ignored)
1950                                .tooltip(Tooltip::text("Helpful Response"))
1951                                .on_click(cx.listener(move |this, _, window, cx| {
1952                                    this.handle_feedback_click(
1953                                        message_id,
1954                                        ThreadFeedback::Positive,
1955                                        window,
1956                                        cx,
1957                                    );
1958                                })),
1959                        )
1960                        .child(
1961                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1962                                .icon_size(IconSize::XSmall)
1963                                .icon_color(Color::Ignored)
1964                                .tooltip(Tooltip::text("Not Helpful"))
1965                                .on_click(cx.listener(move |this, _, window, cx| {
1966                                    this.handle_feedback_click(
1967                                        message_id,
1968                                        ThreadFeedback::Negative,
1969                                        window,
1970                                        cx,
1971                                    );
1972                                })),
1973                        )
1974                        .child(open_as_markdown)
1975                        .child(scroll_to_top),
1976                )
1977                .into_any_element(),
1978            None => feedback_container
1979                .child(h_flex()
1980                    .child(open_as_markdown))
1981                    .child(scroll_to_top)
1982                .into_any_element(),
1983        };
1984
1985        let message_is_empty = message.should_display_content();
1986        let has_content = !message_is_empty || !added_context.is_empty();
1987
1988        let message_content = has_content.then(|| {
1989            if let Some(state) = editing_message_state.as_ref() {
1990                self.render_edit_message_editor(state, window, cx)
1991                    .into_any_element()
1992            } else {
1993                v_flex()
1994                    .w_full()
1995                    .gap_1()
1996                    .when(!added_context.is_empty(), |parent| {
1997                        parent.child(h_flex().flex_wrap().gap_1().children(
1998                            added_context.into_iter().map(|added_context| {
1999                                let context = added_context.handle.clone();
2000                                ContextPill::added(added_context, false, false, None).on_click(
2001                                    Rc::new(cx.listener({
2002                                        let workspace = workspace.clone();
2003                                        move |_, _, window, cx| {
2004                                            if let Some(workspace) = workspace.upgrade() {
2005                                                open_context(&context, workspace, window, cx);
2006                                                cx.notify();
2007                                            }
2008                                        }
2009                                    })),
2010                                )
2011                            }),
2012                        ))
2013                    })
2014                    .when(!message_is_empty, |parent| {
2015                        parent.child(div().pt_0p5().min_h_6().child(self.render_message_content(
2016                            message_id,
2017                            rendered_message,
2018                            has_tool_uses,
2019                            workspace.clone(),
2020                            window,
2021                            cx,
2022                        )))
2023                    })
2024                    .into_any_element()
2025            }
2026        });
2027
2028        let styled_message = match message.role {
2029            Role::User => v_flex()
2030                .id(("message-container", ix))
2031                .pt_2()
2032                .pl_2()
2033                .pr_2p5()
2034                .pb_4()
2035                .child(
2036                    v_flex()
2037                        .id(("user-message", ix))
2038                        .bg(editor_bg_color)
2039                        .rounded_lg()
2040                        .shadow_md()
2041                        .border_1()
2042                        .border_color(colors.border)
2043                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
2044                        .child(
2045                            v_flex()
2046                                .p_2p5()
2047                                .gap_1()
2048                                .children(message_content)
2049                                .when_some(editing_message_state, |this, state| {
2050                                    let focus_handle = state.editor.focus_handle(cx).clone();
2051
2052                                    this.child(
2053                                        h_flex()
2054                                            .w_full()
2055                                            .gap_1()
2056                                            .justify_between()
2057                                            .flex_wrap()
2058                                            .child(
2059                                                h_flex()
2060                                                    .gap_1p5()
2061                                                    .child(
2062                                                        div()
2063                                                            .opacity(0.8)
2064                                                            .child(
2065                                                                Icon::new(IconName::Warning)
2066                                                                    .size(IconSize::Indicator)
2067                                                                    .color(Color::Warning)
2068                                                            ),
2069                                                    )
2070                                                    .child(
2071                                                        Label::new("Editing will restart the thread from this point.")
2072                                                            .color(Color::Muted)
2073                                                            .size(LabelSize::XSmall),
2074                                                    ),
2075                                            )
2076                                            .child(
2077                                                h_flex()
2078                                                    .gap_0p5()
2079                                                    .child(
2080                                                        IconButton::new(
2081                                                            "cancel-edit-message",
2082                                                            IconName::Close,
2083                                                        )
2084                                                        .shape(ui::IconButtonShape::Square)
2085                                                        .icon_color(Color::Error)
2086                                                        .icon_size(IconSize::Small)
2087                                                        .tooltip({
2088                                                            let focus_handle = focus_handle.clone();
2089                                                            move |window, cx| {
2090                                                                Tooltip::for_action_in(
2091                                                                    "Cancel Edit",
2092                                                                    &menu::Cancel,
2093                                                                    &focus_handle,
2094                                                                    window,
2095                                                                    cx,
2096                                                                )
2097                                                            }
2098                                                        })
2099                                                        .on_click(cx.listener(Self::handle_cancel_click)),
2100                                                    )
2101                                                    .child(
2102                                                        IconButton::new(
2103                                                            "confirm-edit-message",
2104                                                            IconName::Return,
2105                                                        )
2106                                                        .disabled(state.editor.read(cx).is_empty(cx))
2107                                                        .shape(ui::IconButtonShape::Square)
2108                                                        .icon_color(Color::Muted)
2109                                                        .icon_size(IconSize::Small)
2110                                                        .tooltip({
2111                                                            let focus_handle = focus_handle.clone();
2112                                                            move |window, cx| {
2113                                                                Tooltip::for_action_in(
2114                                                                    "Regenerate",
2115                                                                    &menu::Confirm,
2116                                                                    &focus_handle,
2117                                                                    window,
2118                                                                    cx,
2119                                                                )
2120                                                            }
2121                                                        })
2122                                                        .on_click(
2123                                                            cx.listener(Self::handle_regenerate_click),
2124                                                        ),
2125                                                    ),
2126                                            )
2127                                    )
2128                                }),
2129                        )
2130                        .on_click(cx.listener({
2131                            let message_creases = message.creases.clone();
2132                            move |this, _, window, cx| {
2133                                if let Some(message_text) =
2134                                    this.thread.read(cx).message(message_id).and_then(|message| {
2135                                        message.segments.first().and_then(|segment| {
2136                                            match segment {
2137                                                MessageSegment::Text(message_text) => {
2138                                                    Some(Into::<Arc<str>>::into(message_text.as_str()))
2139                                                }
2140                                                _ => {
2141                                                    None
2142                                                }
2143                                            }
2144                                        })
2145                                    })
2146                                {
2147                                    this.start_editing_message(
2148                                        message_id,
2149                                        message_text,
2150                                        &message_creases,
2151                                        window,
2152                                        cx,
2153                                    );
2154                                }
2155                            }
2156                        })),
2157                ),
2158            Role::Assistant => v_flex()
2159                .id(("message-container", ix))
2160                .px(RESPONSE_PADDING_X)
2161                .gap_2()
2162                .children(message_content)
2163                .when(has_tool_uses, |parent| {
2164                    parent.children(tool_uses.into_iter().map(|tool_use| {
2165                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2166                    }))
2167                }),
2168            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2169                v_flex()
2170                    .bg(colors.editor_background)
2171                    .rounded_sm()
2172                    .child(div().p_4().children(message_content)),
2173            ),
2174        };
2175
2176        let after_editing_message = self
2177            .editing_message
2178            .as_ref()
2179            .map_or(false, |(editing_message_id, _)| {
2180                message_id > *editing_message_id
2181            });
2182
2183        let backdrop = div()
2184            .id(("backdrop", ix))
2185            .size_full()
2186            .absolute()
2187            .inset_0()
2188            .bg(panel_bg)
2189            .opacity(0.8)
2190            .block_mouse_except_scroll()
2191            .on_click(cx.listener(Self::handle_cancel_click));
2192
2193        v_flex()
2194            .w_full()
2195            .map(|parent| {
2196                if let Some(checkpoint) = checkpoint.filter(|_| !is_generating) {
2197                    let mut is_pending = false;
2198                    let mut error = None;
2199                    if let Some(last_restore_checkpoint) =
2200                        self.thread.read(cx).last_restore_checkpoint()
2201                    {
2202                        if last_restore_checkpoint.message_id() == message_id {
2203                            match last_restore_checkpoint {
2204                                LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2205                                LastRestoreCheckpoint::Error { error: err, .. } => {
2206                                    error = Some(err.clone());
2207                                }
2208                            }
2209                        }
2210                    }
2211
2212                    let restore_checkpoint_button =
2213                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2214                            .icon(if error.is_some() {
2215                                IconName::XCircle
2216                            } else {
2217                                IconName::Undo
2218                            })
2219                            .icon_size(IconSize::XSmall)
2220                            .icon_position(IconPosition::Start)
2221                            .icon_color(if error.is_some() {
2222                                Some(Color::Error)
2223                            } else {
2224                                None
2225                            })
2226                            .label_size(LabelSize::XSmall)
2227                            .disabled(is_pending)
2228                            .on_click(cx.listener(move |this, _, _window, cx| {
2229                                this.thread.update(cx, |thread, cx| {
2230                                    thread
2231                                        .restore_checkpoint(checkpoint.clone(), cx)
2232                                        .detach_and_log_err(cx);
2233                                });
2234                            }));
2235
2236                    let restore_checkpoint_button = if is_pending {
2237                        restore_checkpoint_button
2238                            .with_animation(
2239                                ("pulsating-restore-checkpoint-button", ix),
2240                                Animation::new(Duration::from_secs(2))
2241                                    .repeat()
2242                                    .with_easing(pulsating_between(0.6, 1.)),
2243                                |label, delta| label.alpha(delta),
2244                            )
2245                            .into_any_element()
2246                    } else if let Some(error) = error {
2247                        restore_checkpoint_button
2248                            .tooltip(Tooltip::text(error.to_string()))
2249                            .into_any_element()
2250                    } else {
2251                        restore_checkpoint_button.into_any_element()
2252                    };
2253
2254                    parent.child(
2255                        h_flex()
2256                            .pt_2p5()
2257                            .px_2p5()
2258                            .w_full()
2259                            .gap_1()
2260                            .child(ui::Divider::horizontal())
2261                            .child(restore_checkpoint_button)
2262                            .child(ui::Divider::horizontal()),
2263                    )
2264                } else {
2265                    parent
2266                }
2267            })
2268            .when(is_first_message, |parent| {
2269                parent.child(self.render_rules_item(cx))
2270            })
2271            .child(styled_message)
2272            .children(loading_dots)
2273            .when(show_feedback, move |parent| {
2274                parent.child(feedback_items).when_some(
2275                    self.open_feedback_editors.get(&message_id),
2276                    move |parent, feedback_editor| {
2277                        let focus_handle = feedback_editor.focus_handle(cx);
2278                        parent.child(
2279                            v_flex()
2280                                .key_context("AgentFeedbackMessageEditor")
2281                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2282                                    this.open_feedback_editors.remove(&message_id);
2283                                    cx.notify();
2284                                }))
2285                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2286                                    this.submit_feedback_message(message_id, cx);
2287                                    cx.notify();
2288                                }))
2289                                .on_action(cx.listener(Self::confirm_editing_message))
2290                                .mb_2()
2291                                .mx_4()
2292                                .p_2()
2293                                .rounded_md()
2294                                .border_1()
2295                                .border_color(cx.theme().colors().border)
2296                                .bg(cx.theme().colors().editor_background)
2297                                .child(feedback_editor.clone())
2298                                .child(
2299                                    h_flex()
2300                                        .gap_1()
2301                                        .justify_end()
2302                                        .child(
2303                                            Button::new("dismiss-feedback-message", "Cancel")
2304                                                .label_size(LabelSize::Small)
2305                                                .key_binding(
2306                                                    KeyBinding::for_action_in(
2307                                                        &menu::Cancel,
2308                                                        &focus_handle,
2309                                                        window,
2310                                                        cx,
2311                                                    )
2312                                                    .map(|kb| kb.size(rems_from_px(10.))),
2313                                                )
2314                                                .on_click(cx.listener(
2315                                                    move |this, _, _window, cx| {
2316                                                        this.open_feedback_editors
2317                                                            .remove(&message_id);
2318                                                        cx.notify();
2319                                                    },
2320                                                )),
2321                                        )
2322                                        .child(
2323                                            Button::new(
2324                                                "submit-feedback-message",
2325                                                "Share Feedback",
2326                                            )
2327                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2328                                            .label_size(LabelSize::Small)
2329                                            .key_binding(
2330                                                KeyBinding::for_action_in(
2331                                                    &menu::Confirm,
2332                                                    &focus_handle,
2333                                                    window,
2334                                                    cx,
2335                                                )
2336                                                .map(|kb| kb.size(rems_from_px(10.))),
2337                                            )
2338                                            .on_click(
2339                                                cx.listener(move |this, _, _window, cx| {
2340                                                    this.submit_feedback_message(message_id, cx);
2341                                                    cx.notify()
2342                                                }),
2343                                            ),
2344                                        ),
2345                                ),
2346                        )
2347                    },
2348                )
2349            })
2350            .when(after_editing_message, |parent| {
2351                // Backdrop to dim out the whole thread below the editing user message
2352                parent.relative().child(backdrop)
2353            })
2354            .into_any()
2355    }
2356
2357    fn render_message_content(
2358        &self,
2359        message_id: MessageId,
2360        rendered_message: &RenderedMessage,
2361        has_tool_uses: bool,
2362        workspace: WeakEntity<Workspace>,
2363        window: &Window,
2364        cx: &Context<Self>,
2365    ) -> impl IntoElement {
2366        let is_last_message = self.messages.last() == Some(&message_id);
2367        let is_generating = self.thread.read(cx).is_generating();
2368        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2369            rendered_message
2370                .segments
2371                .iter()
2372                .enumerate()
2373                .next_back()
2374                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2375                .map(|(index, _)| index)
2376        } else {
2377            None
2378        };
2379
2380        let message_role = self
2381            .thread
2382            .read(cx)
2383            .message(message_id)
2384            .map(|m| m.role)
2385            .unwrap_or(Role::User);
2386
2387        let is_assistant_message = message_role == Role::Assistant;
2388        let is_user_message = message_role == Role::User;
2389
2390        v_flex()
2391            .text_ui(cx)
2392            .gap_2()
2393            .when(is_user_message, |this| this.text_xs())
2394            .children(
2395                rendered_message.segments.iter().enumerate().map(
2396                    |(index, segment)| match segment {
2397                        RenderedMessageSegment::Thinking {
2398                            content,
2399                            scroll_handle,
2400                        } => self
2401                            .render_message_thinking_segment(
2402                                message_id,
2403                                index,
2404                                content.clone(),
2405                                &scroll_handle,
2406                                Some(index) == pending_thinking_segment_index,
2407                                window,
2408                                cx,
2409                            )
2410                            .into_any_element(),
2411                        RenderedMessageSegment::Text(markdown) => {
2412                            let markdown_element = MarkdownElement::new(
2413                                markdown.clone(),
2414                                if is_user_message {
2415                                    let mut style = default_markdown_style(window, cx);
2416                                    let mut text_style = window.text_style();
2417                                    let theme_settings = ThemeSettings::get_global(cx);
2418
2419                                    let buffer_font = theme_settings.buffer_font.family.clone();
2420                                    let buffer_font_size = TextSize::Small.rems(cx);
2421
2422                                    text_style.refine(&TextStyleRefinement {
2423                                        font_family: Some(buffer_font),
2424                                        font_size: Some(buffer_font_size.into()),
2425                                        ..Default::default()
2426                                    });
2427
2428                                    style.base_text_style = text_style;
2429                                    style
2430                                } else {
2431                                    default_markdown_style(window, cx)
2432                                },
2433                            );
2434
2435                            let markdown_element = if is_assistant_message {
2436                                markdown_element.code_block_renderer(
2437                                    markdown::CodeBlockRenderer::Custom {
2438                                        render: Arc::new({
2439                                            let workspace = workspace.clone();
2440                                            let active_thread = cx.entity();
2441                                            move |kind,
2442                                                  parsed_markdown,
2443                                                  range,
2444                                                  metadata,
2445                                                  window,
2446                                                  cx| {
2447                                                render_markdown_code_block(
2448                                                    message_id,
2449                                                    range.start,
2450                                                    kind,
2451                                                    parsed_markdown,
2452                                                    metadata,
2453                                                    active_thread.clone(),
2454                                                    workspace.clone(),
2455                                                    window,
2456                                                    cx,
2457                                                )
2458                                            }
2459                                        }),
2460                                        transform: Some(Arc::new({
2461                                            let active_thread = cx.entity();
2462
2463                                            move |element, range, _, _, cx| {
2464                                                let is_expanded = active_thread
2465                                                    .read(cx)
2466                                                    .is_codeblock_expanded(message_id, range.start);
2467
2468                                                if is_expanded {
2469                                                    return element;
2470                                                }
2471
2472                                                element
2473                                            }
2474                                        })),
2475                                    },
2476                                )
2477                            } else {
2478                                markdown_element.code_block_renderer(
2479                                    markdown::CodeBlockRenderer::Default {
2480                                        copy_button: false,
2481                                        copy_button_on_hover: false,
2482                                        border: true,
2483                                    },
2484                                )
2485                            };
2486
2487                            div()
2488                                .child(markdown_element.on_url_click({
2489                                    let workspace = self.workspace.clone();
2490                                    move |text, window, cx| {
2491                                        open_markdown_link(text, workspace.clone(), window, cx);
2492                                    }
2493                                }))
2494                                .into_any_element()
2495                        }
2496                    },
2497                ),
2498            )
2499    }
2500
2501    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2502        cx.theme().colors().border.opacity(0.5)
2503    }
2504
2505    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2506        cx.theme()
2507            .colors()
2508            .element_background
2509            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2510    }
2511
2512    fn render_message_thinking_segment(
2513        &self,
2514        message_id: MessageId,
2515        ix: usize,
2516        markdown: Entity<Markdown>,
2517        scroll_handle: &ScrollHandle,
2518        pending: bool,
2519        window: &Window,
2520        cx: &Context<Self>,
2521    ) -> impl IntoElement {
2522        let is_open = self
2523            .expanded_thinking_segments
2524            .get(&(message_id, ix))
2525            .copied()
2526            .unwrap_or_default();
2527
2528        let editor_bg = cx.theme().colors().panel_background;
2529
2530        div().map(|this| {
2531            if pending {
2532                this.v_flex()
2533                    .mt_neg_2()
2534                    .mb_1p5()
2535                    .child(
2536                        h_flex()
2537                            .group("disclosure-header")
2538                            .justify_between()
2539                            .child(
2540                                h_flex()
2541                                    .gap_1p5()
2542                                    .child(
2543                                        Icon::new(IconName::LightBulb)
2544                                            .size(IconSize::XSmall)
2545                                            .color(Color::Muted),
2546                                    )
2547                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2548                            )
2549                            .child(
2550                                h_flex()
2551                                    .gap_1()
2552                                    .child(
2553                                        div().visible_on_hover("disclosure-header").child(
2554                                            Disclosure::new("thinking-disclosure", is_open)
2555                                                .opened_icon(IconName::ChevronUp)
2556                                                .closed_icon(IconName::ChevronDown)
2557                                                .on_click(cx.listener({
2558                                                    move |this, _event, _window, _cx| {
2559                                                        let is_open = this
2560                                                            .expanded_thinking_segments
2561                                                            .entry((message_id, ix))
2562                                                            .or_insert(false);
2563
2564                                                        *is_open = !*is_open;
2565                                                    }
2566                                                })),
2567                                        ),
2568                                    )
2569                                    .child({
2570                                        Icon::new(IconName::ArrowCircle)
2571                                            .color(Color::Accent)
2572                                            .size(IconSize::Small)
2573                                            .with_animation(
2574                                                "arrow-circle",
2575                                                Animation::new(Duration::from_secs(2)).repeat(),
2576                                                |icon, delta| {
2577                                                    icon.transform(Transformation::rotate(
2578                                                        percentage(delta),
2579                                                    ))
2580                                                },
2581                                            )
2582                                    }),
2583                            ),
2584                    )
2585                    .when(!is_open, |this| {
2586                        let gradient_overlay = div()
2587                            .rounded_b_lg()
2588                            .h_full()
2589                            .absolute()
2590                            .w_full()
2591                            .bottom_0()
2592                            .left_0()
2593                            .bg(linear_gradient(
2594                                180.,
2595                                linear_color_stop(editor_bg, 1.),
2596                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2597                            ));
2598
2599                        this.child(
2600                            div()
2601                                .relative()
2602                                .bg(editor_bg)
2603                                .rounded_b_lg()
2604                                .mt_2()
2605                                .pl_4()
2606                                .child(
2607                                    div()
2608                                        .id(("thinking-content", ix))
2609                                        .max_h_20()
2610                                        .track_scroll(scroll_handle)
2611                                        .text_ui_sm(cx)
2612                                        .overflow_hidden()
2613                                        .child(
2614                                            MarkdownElement::new(
2615                                                markdown.clone(),
2616                                                default_markdown_style(window, cx),
2617                                            )
2618                                            .on_url_click({
2619                                                let workspace = self.workspace.clone();
2620                                                move |text, window, cx| {
2621                                                    open_markdown_link(
2622                                                        text,
2623                                                        workspace.clone(),
2624                                                        window,
2625                                                        cx,
2626                                                    );
2627                                                }
2628                                            }),
2629                                        ),
2630                                )
2631                                .child(gradient_overlay),
2632                        )
2633                    })
2634                    .when(is_open, |this| {
2635                        this.child(
2636                            div()
2637                                .id(("thinking-content", ix))
2638                                .h_full()
2639                                .bg(editor_bg)
2640                                .text_ui_sm(cx)
2641                                .child(
2642                                    MarkdownElement::new(
2643                                        markdown.clone(),
2644                                        default_markdown_style(window, cx),
2645                                    )
2646                                    .on_url_click({
2647                                        let workspace = self.workspace.clone();
2648                                        move |text, window, cx| {
2649                                            open_markdown_link(text, workspace.clone(), window, cx);
2650                                        }
2651                                    }),
2652                                ),
2653                        )
2654                    })
2655            } else {
2656                this.v_flex()
2657                    .mt_neg_2()
2658                    .child(
2659                        h_flex()
2660                            .group("disclosure-header")
2661                            .pr_1()
2662                            .justify_between()
2663                            .opacity(0.8)
2664                            .hover(|style| style.opacity(1.))
2665                            .child(
2666                                h_flex()
2667                                    .gap_1p5()
2668                                    .child(
2669                                        Icon::new(IconName::LightBulb)
2670                                            .size(IconSize::XSmall)
2671                                            .color(Color::Muted),
2672                                    )
2673                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2674                            )
2675                            .child(
2676                                div().visible_on_hover("disclosure-header").child(
2677                                    Disclosure::new("thinking-disclosure", is_open)
2678                                        .opened_icon(IconName::ChevronUp)
2679                                        .closed_icon(IconName::ChevronDown)
2680                                        .on_click(cx.listener({
2681                                            move |this, _event, _window, _cx| {
2682                                                let is_open = this
2683                                                    .expanded_thinking_segments
2684                                                    .entry((message_id, ix))
2685                                                    .or_insert(false);
2686
2687                                                *is_open = !*is_open;
2688                                            }
2689                                        })),
2690                                ),
2691                            ),
2692                    )
2693                    .child(
2694                        div()
2695                            .id(("thinking-content", ix))
2696                            .relative()
2697                            .mt_1p5()
2698                            .ml_1p5()
2699                            .pl_2p5()
2700                            .border_l_1()
2701                            .border_color(cx.theme().colors().border_variant)
2702                            .text_ui_sm(cx)
2703                            .when(is_open, |this| {
2704                                this.child(
2705                                    MarkdownElement::new(
2706                                        markdown.clone(),
2707                                        default_markdown_style(window, cx),
2708                                    )
2709                                    .on_url_click({
2710                                        let workspace = self.workspace.clone();
2711                                        move |text, window, cx| {
2712                                            open_markdown_link(text, workspace.clone(), window, cx);
2713                                        }
2714                                    }),
2715                                )
2716                            }),
2717                    )
2718            }
2719        })
2720    }
2721
2722    fn render_tool_use(
2723        &self,
2724        tool_use: ToolUse,
2725        window: &mut Window,
2726        workspace: WeakEntity<Workspace>,
2727        cx: &mut Context<Self>,
2728    ) -> impl IntoElement + use<> {
2729        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2730            return card.render(&tool_use.status, window, workspace, cx);
2731        }
2732
2733        let is_open = self
2734            .expanded_tool_uses
2735            .get(&tool_use.id)
2736            .copied()
2737            .unwrap_or_default();
2738
2739        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2740
2741        let fs = self
2742            .workspace
2743            .upgrade()
2744            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2745        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2746        let needs_confirmation_tools = tool_use.needs_confirmation;
2747
2748        let status_icons = div().child(match &tool_use.status {
2749            ToolUseStatus::NeedsConfirmation => {
2750                let icon = Icon::new(IconName::Warning)
2751                    .color(Color::Warning)
2752                    .size(IconSize::Small);
2753                icon.into_any_element()
2754            }
2755            ToolUseStatus::Pending
2756            | ToolUseStatus::InputStillStreaming
2757            | ToolUseStatus::Running => {
2758                let icon = Icon::new(IconName::ArrowCircle)
2759                    .color(Color::Accent)
2760                    .size(IconSize::Small);
2761                icon.with_animation(
2762                    "arrow-circle",
2763                    Animation::new(Duration::from_secs(2)).repeat(),
2764                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2765                )
2766                .into_any_element()
2767            }
2768            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2769            ToolUseStatus::Error(_) => {
2770                let icon = Icon::new(IconName::Close)
2771                    .color(Color::Error)
2772                    .size(IconSize::Small);
2773                icon.into_any_element()
2774            }
2775        });
2776
2777        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2778        let results_content_container = || v_flex().p_2().gap_0p5();
2779
2780        let results_content = v_flex()
2781            .gap_1()
2782            .child(
2783                results_content_container()
2784                    .child(
2785                        Label::new("Input")
2786                            .size(LabelSize::XSmall)
2787                            .color(Color::Muted)
2788                            .buffer_font(cx),
2789                    )
2790                    .child(
2791                        div()
2792                            .w_full()
2793                            .text_ui_sm(cx)
2794                            .children(rendered_tool_use.as_ref().map(|rendered| {
2795                                MarkdownElement::new(
2796                                    rendered.input.clone(),
2797                                    tool_use_markdown_style(window, cx),
2798                                )
2799                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2800                                    copy_button: false,
2801                                    copy_button_on_hover: false,
2802                                    border: false,
2803                                })
2804                                .on_url_click({
2805                                    let workspace = self.workspace.clone();
2806                                    move |text, window, cx| {
2807                                        open_markdown_link(text, workspace.clone(), window, cx);
2808                                    }
2809                                })
2810                            })),
2811                    ),
2812            )
2813            .map(|container| match tool_use.status {
2814                ToolUseStatus::Finished(_) => container.child(
2815                    results_content_container()
2816                        .border_t_1()
2817                        .border_color(self.tool_card_border_color(cx))
2818                        .child(
2819                            Label::new("Result")
2820                                .size(LabelSize::XSmall)
2821                                .color(Color::Muted)
2822                                .buffer_font(cx),
2823                        )
2824                        .child(div().w_full().text_ui_sm(cx).children(
2825                            rendered_tool_use.as_ref().map(|rendered| {
2826                                MarkdownElement::new(
2827                                    rendered.output.clone(),
2828                                    tool_use_markdown_style(window, cx),
2829                                )
2830                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2831                                    copy_button: false,
2832                                    copy_button_on_hover: false,
2833                                    border: false,
2834                                })
2835                                .on_url_click({
2836                                    let workspace = self.workspace.clone();
2837                                    move |text, window, cx| {
2838                                        open_markdown_link(text, workspace.clone(), window, cx);
2839                                    }
2840                                })
2841                                .into_any_element()
2842                            }),
2843                        )),
2844                ),
2845                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2846                    results_content_container()
2847                        .border_t_1()
2848                        .border_color(self.tool_card_border_color(cx))
2849                        .child(
2850                            h_flex()
2851                                .gap_1()
2852                                .child(
2853                                    Icon::new(IconName::ArrowCircle)
2854                                        .size(IconSize::Small)
2855                                        .color(Color::Accent)
2856                                        .with_animation(
2857                                            "arrow-circle",
2858                                            Animation::new(Duration::from_secs(2)).repeat(),
2859                                            |icon, delta| {
2860                                                icon.transform(Transformation::rotate(percentage(
2861                                                    delta,
2862                                                )))
2863                                            },
2864                                        ),
2865                                )
2866                                .child(
2867                                    Label::new("Running…")
2868                                        .size(LabelSize::XSmall)
2869                                        .color(Color::Muted)
2870                                        .buffer_font(cx),
2871                                ),
2872                        ),
2873                ),
2874                ToolUseStatus::Error(_) => container.child(
2875                    results_content_container()
2876                        .border_t_1()
2877                        .border_color(self.tool_card_border_color(cx))
2878                        .child(
2879                            Label::new("Error")
2880                                .size(LabelSize::XSmall)
2881                                .color(Color::Muted)
2882                                .buffer_font(cx),
2883                        )
2884                        .child(
2885                            div()
2886                                .text_ui_sm(cx)
2887                                .children(rendered_tool_use.as_ref().map(|rendered| {
2888                                    MarkdownElement::new(
2889                                        rendered.output.clone(),
2890                                        tool_use_markdown_style(window, cx),
2891                                    )
2892                                    .on_url_click({
2893                                        let workspace = self.workspace.clone();
2894                                        move |text, window, cx| {
2895                                            open_markdown_link(text, workspace.clone(), window, cx);
2896                                        }
2897                                    })
2898                                    .into_any_element()
2899                                })),
2900                        ),
2901                ),
2902                ToolUseStatus::Pending => container,
2903                ToolUseStatus::NeedsConfirmation => container.child(
2904                    results_content_container()
2905                        .border_t_1()
2906                        .border_color(self.tool_card_border_color(cx))
2907                        .child(
2908                            Label::new("Asking Permission")
2909                                .size(LabelSize::Small)
2910                                .color(Color::Muted)
2911                                .buffer_font(cx),
2912                        ),
2913                ),
2914            });
2915
2916        let gradient_overlay = |color: Hsla| {
2917            div()
2918                .h_full()
2919                .absolute()
2920                .w_12()
2921                .bottom_0()
2922                .map(|element| {
2923                    if is_status_finished {
2924                        element.right_6()
2925                    } else {
2926                        element.right(px(44.))
2927                    }
2928                })
2929                .bg(linear_gradient(
2930                    90.,
2931                    linear_color_stop(color, 1.),
2932                    linear_color_stop(color.opacity(0.2), 0.),
2933                ))
2934        };
2935
2936        v_flex().gap_1().mb_2().map(|element| {
2937            if !needs_confirmation_tools {
2938                element.child(
2939                    v_flex()
2940                        .child(
2941                            h_flex()
2942                                .group("disclosure-header")
2943                                .relative()
2944                                .gap_1p5()
2945                                .justify_between()
2946                                .opacity(0.8)
2947                                .hover(|style| style.opacity(1.))
2948                                .when(!is_status_finished, |this| this.pr_2())
2949                                .child(
2950                                    h_flex()
2951                                        .id("tool-label-container")
2952                                        .gap_1p5()
2953                                        .max_w_full()
2954                                        .overflow_x_scroll()
2955                                        .child(
2956                                            Icon::new(tool_use.icon)
2957                                                .size(IconSize::XSmall)
2958                                                .color(Color::Muted),
2959                                        )
2960                                        .child(
2961                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2962                                                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| {
2963                                                    open_markdown_link(text, workspace.clone(), window, cx);
2964                                                }}))
2965                                            ),
2966                                        ),
2967                                )
2968                                .child(
2969                                    h_flex()
2970                                        .gap_1()
2971                                        .child(
2972                                            div().visible_on_hover("disclosure-header").child(
2973                                                Disclosure::new("tool-use-disclosure", is_open)
2974                                                    .opened_icon(IconName::ChevronUp)
2975                                                    .closed_icon(IconName::ChevronDown)
2976                                                    .on_click(cx.listener({
2977                                                        let tool_use_id = tool_use.id.clone();
2978                                                        move |this, _event, _window, _cx| {
2979                                                            let is_open = this
2980                                                                .expanded_tool_uses
2981                                                                .entry(tool_use_id.clone())
2982                                                                .or_insert(false);
2983
2984                                                            *is_open = !*is_open;
2985                                                        }
2986                                                    })),
2987                                            ),
2988                                        )
2989                                        .child(status_icons),
2990                                )
2991                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2992                        )
2993                        .map(|parent| {
2994                            if !is_open {
2995                                return parent;
2996                            }
2997
2998                            parent.child(
2999                                v_flex()
3000                                    .mt_1()
3001                                    .border_1()
3002                                    .border_color(self.tool_card_border_color(cx))
3003                                    .bg(cx.theme().colors().editor_background)
3004                                    .rounded_lg()
3005                                    .child(results_content),
3006                            )
3007                        }),
3008                )
3009            } else {
3010                v_flex()
3011                    .mb_2()
3012                    .rounded_lg()
3013                    .border_1()
3014                    .border_color(self.tool_card_border_color(cx))
3015                    .overflow_hidden()
3016                    .child(
3017                        h_flex()
3018                            .group("disclosure-header")
3019                            .relative()
3020                            .justify_between()
3021                            .py_1()
3022                            .map(|element| {
3023                                if is_status_finished {
3024                                    element.pl_2().pr_0p5()
3025                                } else {
3026                                    element.px_2()
3027                                }
3028                            })
3029                            .bg(self.tool_card_header_bg(cx))
3030                            .map(|element| {
3031                                if is_open {
3032                                    element.border_b_1().rounded_t_md()
3033                                } else if needs_confirmation {
3034                                    element.rounded_t_md()
3035                                } else {
3036                                    element.rounded_md()
3037                                }
3038                            })
3039                            .border_color(self.tool_card_border_color(cx))
3040                            .child(
3041                                h_flex()
3042                                    .id("tool-label-container")
3043                                    .gap_1p5()
3044                                    .max_w_full()
3045                                    .overflow_x_scroll()
3046                                    .child(
3047                                        Icon::new(tool_use.icon)
3048                                            .size(IconSize::XSmall)
3049                                            .color(Color::Muted),
3050                                    )
3051                                    .child(
3052                                        h_flex().pr_8().text_ui_sm(cx).children(
3053                                            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| {
3054                                                open_markdown_link(text, workspace.clone(), window, cx);
3055                                            }}))
3056                                        ),
3057                                    ),
3058                            )
3059                            .child(
3060                                h_flex()
3061                                    .gap_1()
3062                                    .child(
3063                                        div().visible_on_hover("disclosure-header").child(
3064                                            Disclosure::new("tool-use-disclosure", is_open)
3065                                                .opened_icon(IconName::ChevronUp)
3066                                                .closed_icon(IconName::ChevronDown)
3067                                                .on_click(cx.listener({
3068                                                    let tool_use_id = tool_use.id.clone();
3069                                                    move |this, _event, _window, _cx| {
3070                                                        let is_open = this
3071                                                            .expanded_tool_uses
3072                                                            .entry(tool_use_id.clone())
3073                                                            .or_insert(false);
3074
3075                                                        *is_open = !*is_open;
3076                                                    }
3077                                                })),
3078                                        ),
3079                                    )
3080                                    .child(status_icons),
3081                            )
3082                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
3083                    )
3084                    .map(|parent| {
3085                        if !is_open {
3086                            return parent;
3087                        }
3088
3089                        parent.child(
3090                            v_flex()
3091                                .bg(cx.theme().colors().editor_background)
3092                                .map(|element| {
3093                                    if  needs_confirmation {
3094                                        element.rounded_none()
3095                                    } else {
3096                                        element.rounded_b_lg()
3097                                    }
3098                                })
3099                                .child(results_content),
3100                        )
3101                    })
3102                    .when(needs_confirmation, |this| {
3103                        this.child(
3104                            h_flex()
3105                                .py_1()
3106                                .pl_2()
3107                                .pr_1()
3108                                .gap_1()
3109                                .justify_between()
3110                                .flex_wrap()
3111                                .bg(cx.theme().colors().editor_background)
3112                                .border_t_1()
3113                                .border_color(self.tool_card_border_color(cx))
3114                                .rounded_b_lg()
3115                                .child(
3116                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3117                                )
3118                                .child(
3119                                    h_flex()
3120                                        .gap_0p5()
3121                                        .child({
3122                                            let tool_id = tool_use.id.clone();
3123                                            Button::new(
3124                                                "always-allow-tool-action",
3125                                                "Always Allow",
3126                                            )
3127                                            .label_size(LabelSize::Small)
3128                                            .icon(IconName::CheckDouble)
3129                                            .icon_position(IconPosition::Start)
3130                                            .icon_size(IconSize::Small)
3131                                            .icon_color(Color::Success)
3132                                            .tooltip(move |window, cx|  {
3133                                                Tooltip::with_meta(
3134                                                    "Never ask for permission",
3135                                                    None,
3136                                                    "Restore the original behavior in your Agent Panel settings",
3137                                                    window,
3138                                                    cx,
3139                                                )
3140                                            })
3141                                            .on_click(cx.listener(
3142                                                move |this, event, window, cx| {
3143                                                    if let Some(fs) = fs.clone() {
3144                                                        update_settings_file::<AgentSettings>(
3145                                                            fs.clone(),
3146                                                            cx,
3147                                                            |settings, _| {
3148                                                                settings.set_always_allow_tool_actions(true);
3149                                                            },
3150                                                        );
3151                                                    }
3152                                                    this.handle_allow_tool(
3153                                                        tool_id.clone(),
3154                                                        event,
3155                                                        window,
3156                                                        cx,
3157                                                    )
3158                                                },
3159                                            ))
3160                                        })
3161                                        .child(ui::Divider::vertical())
3162                                        .child({
3163                                            let tool_id = tool_use.id.clone();
3164                                            Button::new("allow-tool-action", "Allow")
3165                                                .label_size(LabelSize::Small)
3166                                                .icon(IconName::Check)
3167                                                .icon_position(IconPosition::Start)
3168                                                .icon_size(IconSize::Small)
3169                                                .icon_color(Color::Success)
3170                                                .on_click(cx.listener(
3171                                                    move |this, event, window, cx| {
3172                                                        this.handle_allow_tool(
3173                                                            tool_id.clone(),
3174                                                            event,
3175                                                            window,
3176                                                            cx,
3177                                                        )
3178                                                    },
3179                                                ))
3180                                        })
3181                                        .child({
3182                                            let tool_id = tool_use.id.clone();
3183                                            let tool_name: Arc<str> = tool_use.name.into();
3184                                            Button::new("deny-tool", "Deny")
3185                                                .label_size(LabelSize::Small)
3186                                                .icon(IconName::Close)
3187                                                .icon_position(IconPosition::Start)
3188                                                .icon_size(IconSize::Small)
3189                                                .icon_color(Color::Error)
3190                                                .on_click(cx.listener(
3191                                                    move |this, event, window, cx| {
3192                                                        this.handle_deny_tool(
3193                                                            tool_id.clone(),
3194                                                            tool_name.clone(),
3195                                                            event,
3196                                                            window,
3197                                                            cx,
3198                                                        )
3199                                                    },
3200                                                ))
3201                                        }),
3202                                ),
3203                        )
3204                    })
3205            }
3206        }).into_any_element()
3207    }
3208
3209    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3210        let project_context = self.thread.read(cx).project_context();
3211        let project_context = project_context.borrow();
3212        let Some(project_context) = project_context.as_ref() else {
3213            return div().into_any();
3214        };
3215
3216        let user_rules_text = if project_context.user_rules.is_empty() {
3217            None
3218        } else if project_context.user_rules.len() == 1 {
3219            let user_rules = &project_context.user_rules[0];
3220
3221            match user_rules.title.as_ref() {
3222                Some(title) => Some(format!("Using \"{title}\" user rule")),
3223                None => Some("Using user rule".into()),
3224            }
3225        } else {
3226            Some(format!(
3227                "Using {} user rules",
3228                project_context.user_rules.len()
3229            ))
3230        };
3231
3232        let first_user_rules_id = project_context
3233            .user_rules
3234            .first()
3235            .map(|user_rules| user_rules.uuid.0);
3236
3237        let rules_files = project_context
3238            .worktrees
3239            .iter()
3240            .filter_map(|worktree| worktree.rules_file.as_ref())
3241            .collect::<Vec<_>>();
3242
3243        let rules_file_text = match rules_files.as_slice() {
3244            &[] => None,
3245            &[rules_file] => Some(format!(
3246                "Using project {:?} file",
3247                rules_file.path_in_worktree
3248            )),
3249            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3250        };
3251
3252        if user_rules_text.is_none() && rules_file_text.is_none() {
3253            return div().into_any();
3254        }
3255
3256        v_flex()
3257            .pt_2()
3258            .px_2p5()
3259            .gap_1()
3260            .when_some(user_rules_text, |parent, user_rules_text| {
3261                parent.child(
3262                    h_flex()
3263                        .w_full()
3264                        .child(
3265                            Icon::new(RULES_ICON)
3266                                .size(IconSize::XSmall)
3267                                .color(Color::Disabled),
3268                        )
3269                        .child(
3270                            Label::new(user_rules_text)
3271                                .size(LabelSize::XSmall)
3272                                .color(Color::Muted)
3273                                .truncate()
3274                                .buffer_font(cx)
3275                                .ml_1p5()
3276                                .mr_0p5(),
3277                        )
3278                        .child(
3279                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3280                                .shape(ui::IconButtonShape::Square)
3281                                .icon_size(IconSize::XSmall)
3282                                .icon_color(Color::Ignored)
3283                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3284                                .tooltip(Tooltip::text("View User Rules"))
3285                                .on_click(move |_event, window, cx| {
3286                                    window.dispatch_action(
3287                                        Box::new(OpenRulesLibrary {
3288                                            prompt_to_select: first_user_rules_id,
3289                                        }),
3290                                        cx,
3291                                    )
3292                                }),
3293                        ),
3294                )
3295            })
3296            .when_some(rules_file_text, |parent, rules_file_text| {
3297                parent.child(
3298                    h_flex()
3299                        .w_full()
3300                        .child(
3301                            Icon::new(IconName::File)
3302                                .size(IconSize::XSmall)
3303                                .color(Color::Disabled),
3304                        )
3305                        .child(
3306                            Label::new(rules_file_text)
3307                                .size(LabelSize::XSmall)
3308                                .color(Color::Muted)
3309                                .buffer_font(cx)
3310                                .ml_1p5()
3311                                .mr_0p5(),
3312                        )
3313                        .child(
3314                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3315                                .shape(ui::IconButtonShape::Square)
3316                                .icon_size(IconSize::XSmall)
3317                                .icon_color(Color::Ignored)
3318                                .on_click(cx.listener(Self::handle_open_rules))
3319                                .tooltip(Tooltip::text("View Rules")),
3320                        ),
3321                )
3322            })
3323            .into_any()
3324    }
3325
3326    fn handle_allow_tool(
3327        &mut self,
3328        tool_use_id: LanguageModelToolUseId,
3329        _: &ClickEvent,
3330        window: &mut Window,
3331        cx: &mut Context<Self>,
3332    ) {
3333        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3334            .thread
3335            .read(cx)
3336            .pending_tool(&tool_use_id)
3337            .map(|tool_use| tool_use.status.clone())
3338        {
3339            self.thread.update(cx, |thread, cx| {
3340                if let Some(configured) = thread.get_or_init_configured_model(cx) {
3341                    thread.run_tool(
3342                        c.tool_use_id.clone(),
3343                        c.ui_text.clone(),
3344                        c.input.clone(),
3345                        c.request.clone(),
3346                        c.tool.clone(),
3347                        configured.model,
3348                        Some(window.window_handle()),
3349                        cx,
3350                    );
3351                }
3352            });
3353        }
3354    }
3355
3356    fn handle_deny_tool(
3357        &mut self,
3358        tool_use_id: LanguageModelToolUseId,
3359        tool_name: Arc<str>,
3360        _: &ClickEvent,
3361        window: &mut Window,
3362        cx: &mut Context<Self>,
3363    ) {
3364        let window_handle = window.window_handle();
3365        self.thread.update(cx, |thread, cx| {
3366            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3367        });
3368    }
3369
3370    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3371        let project_context = self.thread.read(cx).project_context();
3372        let project_context = project_context.borrow();
3373        let Some(project_context) = project_context.as_ref() else {
3374            return;
3375        };
3376
3377        let project_entry_ids = project_context
3378            .worktrees
3379            .iter()
3380            .flat_map(|worktree| worktree.rules_file.as_ref())
3381            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3382            .collect::<Vec<_>>();
3383
3384        self.workspace
3385            .update(cx, move |workspace, cx| {
3386                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3387                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3388                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3389                let project = workspace.project().read(cx);
3390                let project_paths = project_entry_ids
3391                    .into_iter()
3392                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3393                    .collect::<Vec<_>>();
3394                for project_path in project_paths {
3395                    workspace
3396                        .open_path(project_path, None, true, window, cx)
3397                        .detach_and_log_err(cx);
3398                }
3399            })
3400            .ok();
3401    }
3402
3403    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3404        for window in self.notifications.drain(..) {
3405            window
3406                .update(cx, |_, window, _| {
3407                    window.remove_window();
3408                })
3409                .ok();
3410
3411            self.notification_subscriptions.remove(&window);
3412        }
3413    }
3414
3415    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3416        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3417            return None;
3418        }
3419
3420        Some(
3421            div()
3422                .occlude()
3423                .id("active-thread-scrollbar")
3424                .on_mouse_move(cx.listener(|_, _, _, cx| {
3425                    cx.notify();
3426                    cx.stop_propagation()
3427                }))
3428                .on_hover(|_, _, cx| {
3429                    cx.stop_propagation();
3430                })
3431                .on_any_mouse_down(|_, _, cx| {
3432                    cx.stop_propagation();
3433                })
3434                .on_mouse_up(
3435                    MouseButton::Left,
3436                    cx.listener(|_, _, _, cx| {
3437                        cx.stop_propagation();
3438                    }),
3439                )
3440                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3441                    cx.notify();
3442                }))
3443                .h_full()
3444                .absolute()
3445                .right_1()
3446                .top_1()
3447                .bottom_0()
3448                .w(px(12.))
3449                .cursor_default()
3450                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3451        )
3452    }
3453
3454    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3455        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3456        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3457            cx.background_executor()
3458                .timer(SCROLLBAR_SHOW_INTERVAL)
3459                .await;
3460            thread
3461                .update(cx, |thread, cx| {
3462                    if !thread.scrollbar_state.is_dragging() {
3463                        thread.show_scrollbar = false;
3464                        cx.notify();
3465                    }
3466                })
3467                .log_err();
3468        }))
3469    }
3470
3471    pub fn is_codeblock_expanded(&self, message_id: MessageId, ix: usize) -> bool {
3472        self.expanded_code_blocks
3473            .get(&(message_id, ix))
3474            .copied()
3475            .unwrap_or(true)
3476    }
3477
3478    pub fn toggle_codeblock_expanded(&mut self, message_id: MessageId, ix: usize) {
3479        let is_expanded = self
3480            .expanded_code_blocks
3481            .entry((message_id, ix))
3482            .or_insert(true);
3483        *is_expanded = !*is_expanded;
3484    }
3485
3486    pub fn scroll_to_top(&mut self, cx: &mut Context<Self>) {
3487        self.list_state.scroll_to(ListOffset::default());
3488        cx.notify();
3489    }
3490
3491    pub fn scroll_to_bottom(&mut self, cx: &mut Context<Self>) {
3492        self.list_state.reset(self.messages.len());
3493        cx.notify();
3494    }
3495}
3496
3497pub enum ActiveThreadEvent {
3498    EditingMessageTokenCountChanged,
3499}
3500
3501impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3502
3503impl Render for ActiveThread {
3504    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3505        v_flex()
3506            .size_full()
3507            .relative()
3508            .bg(cx.theme().colors().panel_background)
3509            .on_mouse_move(cx.listener(|this, _, _, cx| {
3510                this.show_scrollbar = true;
3511                this.hide_scrollbar_later(cx);
3512                cx.notify();
3513            }))
3514            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3515                this.show_scrollbar = true;
3516                this.hide_scrollbar_later(cx);
3517                cx.notify();
3518            }))
3519            .on_mouse_up(
3520                MouseButton::Left,
3521                cx.listener(|this, _, _, cx| {
3522                    this.hide_scrollbar_later(cx);
3523                }),
3524            )
3525            .child(list(self.list_state.clone()).flex_grow())
3526            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3527                this.child(scrollbar)
3528            })
3529    }
3530}
3531
3532pub(crate) fn open_active_thread_as_markdown(
3533    thread: Entity<Thread>,
3534    workspace: Entity<Workspace>,
3535    window: &mut Window,
3536    cx: &mut App,
3537) -> Task<anyhow::Result<()>> {
3538    let markdown_language_task = workspace
3539        .read(cx)
3540        .app_state()
3541        .languages
3542        .language_for_name("Markdown");
3543
3544    window.spawn(cx, async move |cx| {
3545        let markdown_language = markdown_language_task.await?;
3546
3547        workspace.update_in(cx, |workspace, window, cx| {
3548            let thread = thread.read(cx);
3549            let markdown = thread.to_markdown(cx)?;
3550            let thread_summary = thread.summary().or_default().to_string();
3551
3552            let project = workspace.project().clone();
3553
3554            if !project.read(cx).is_local() {
3555                anyhow::bail!("failed to open active thread as markdown in remote project");
3556            }
3557
3558            let buffer = project.update(cx, |project, cx| {
3559                project.create_local_buffer(&markdown, Some(markdown_language), cx)
3560            });
3561            let buffer =
3562                cx.new(|cx| MultiBuffer::singleton(buffer, cx).with_title(thread_summary.clone()));
3563
3564            workspace.add_item_to_active_pane(
3565                Box::new(cx.new(|cx| {
3566                    let mut editor =
3567                        Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
3568                    editor.set_breadcrumb_header(thread_summary);
3569                    editor
3570                })),
3571                None,
3572                true,
3573                window,
3574                cx,
3575            );
3576
3577            anyhow::Ok(())
3578        })??;
3579        anyhow::Ok(())
3580    })
3581}
3582
3583pub(crate) fn open_context(
3584    context: &AgentContextHandle,
3585    workspace: Entity<Workspace>,
3586    window: &mut Window,
3587    cx: &mut App,
3588) {
3589    match context {
3590        AgentContextHandle::File(file_context) => {
3591            if let Some(project_path) = file_context.project_path(cx) {
3592                workspace.update(cx, |workspace, cx| {
3593                    workspace
3594                        .open_path(project_path, None, true, window, cx)
3595                        .detach_and_log_err(cx);
3596                });
3597            }
3598        }
3599
3600        AgentContextHandle::Directory(directory_context) => {
3601            let entry_id = directory_context.entry_id;
3602            workspace.update(cx, |workspace, cx| {
3603                workspace.project().update(cx, |_project, cx| {
3604                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3605                })
3606            })
3607        }
3608
3609        AgentContextHandle::Symbol(symbol_context) => {
3610            let buffer = symbol_context.buffer.read(cx);
3611            if let Some(project_path) = buffer.project_path(cx) {
3612                let snapshot = buffer.snapshot();
3613                let target_position = symbol_context.range.start.to_point(&snapshot);
3614                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3615                    .detach();
3616            }
3617        }
3618
3619        AgentContextHandle::Selection(selection_context) => {
3620            let buffer = selection_context.buffer.read(cx);
3621            if let Some(project_path) = buffer.project_path(cx) {
3622                let snapshot = buffer.snapshot();
3623                let target_position = selection_context.range.start.to_point(&snapshot);
3624
3625                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3626                    .detach();
3627            }
3628        }
3629
3630        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3631            cx.open_url(&fetched_url_context.url);
3632        }
3633
3634        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3635            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3636                panel.update(cx, |panel, cx| {
3637                    panel.open_thread(thread_context.thread.clone(), window, cx);
3638                });
3639            }
3640        }),
3641
3642        AgentContextHandle::TextThread(text_thread_context) => {
3643            workspace.update(cx, |workspace, cx| {
3644                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3645                    panel.update(cx, |panel, cx| {
3646                        panel.open_prompt_editor(text_thread_context.context.clone(), window, cx)
3647                    });
3648                }
3649            })
3650        }
3651
3652        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3653            Box::new(OpenRulesLibrary {
3654                prompt_to_select: Some(rules_context.prompt_id.0),
3655            }),
3656            cx,
3657        ),
3658
3659        AgentContextHandle::Image(_) => {}
3660    }
3661}
3662
3663pub(crate) fn attach_pasted_images_as_context(
3664    context_store: &Entity<ContextStore>,
3665    cx: &mut App,
3666) -> bool {
3667    let images = cx
3668        .read_from_clipboard()
3669        .map(|item| {
3670            item.into_entries()
3671                .filter_map(|entry| {
3672                    if let ClipboardEntry::Image(image) = entry {
3673                        Some(image)
3674                    } else {
3675                        None
3676                    }
3677                })
3678                .collect::<Vec<_>>()
3679        })
3680        .unwrap_or_default();
3681
3682    if images.is_empty() {
3683        return false;
3684    }
3685    cx.stop_propagation();
3686
3687    context_store.update(cx, |store, cx| {
3688        for image in images {
3689            store.add_image_instance(Arc::new(image), cx);
3690        }
3691    });
3692    true
3693}
3694
3695fn open_editor_at_position(
3696    project_path: project::ProjectPath,
3697    target_position: Point,
3698    workspace: &Entity<Workspace>,
3699    window: &mut Window,
3700    cx: &mut App,
3701) -> Task<()> {
3702    let open_task = workspace.update(cx, |workspace, cx| {
3703        workspace.open_path(project_path, None, true, window, cx)
3704    });
3705    window.spawn(cx, async move |cx| {
3706        if let Some(active_editor) = open_task
3707            .await
3708            .log_err()
3709            .and_then(|item| item.downcast::<Editor>())
3710        {
3711            active_editor
3712                .downgrade()
3713                .update_in(cx, |editor, window, cx| {
3714                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3715                })
3716                .log_err();
3717        }
3718    })
3719}
3720
3721#[cfg(test)]
3722mod tests {
3723    use super::*;
3724    use agent::{MessageSegment, context::ContextLoadResult, thread_store};
3725    use assistant_tool::{ToolRegistry, ToolWorkingSet};
3726    use editor::EditorSettings;
3727    use fs::FakeFs;
3728    use gpui::{AppContext, TestAppContext, VisualTestContext};
3729    use language_model::{
3730        ConfiguredModel, LanguageModel, LanguageModelRegistry,
3731        fake_provider::{FakeLanguageModel, FakeLanguageModelProvider},
3732    };
3733    use project::Project;
3734    use prompt_store::PromptBuilder;
3735    use serde_json::json;
3736    use settings::SettingsStore;
3737    use util::path;
3738    use workspace::CollaboratorId;
3739
3740    #[gpui::test]
3741    async fn test_agent_is_unfollowed_after_cancelling_completion(cx: &mut TestAppContext) {
3742        init_test_settings(cx);
3743
3744        let project = create_test_project(
3745            cx,
3746            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
3747        )
3748        .await;
3749
3750        let (cx, _active_thread, workspace, thread, model) =
3751            setup_test_environment(cx, project.clone()).await;
3752
3753        // Insert user message without any context (empty context vector)
3754        thread.update(cx, |thread, cx| {
3755            thread.insert_user_message(
3756                "What is the best way to learn Rust?",
3757                ContextLoadResult::default(),
3758                None,
3759                vec![],
3760                cx,
3761            );
3762        });
3763
3764        // Stream response to user message
3765        thread.update(cx, |thread, cx| {
3766            let request =
3767                thread.to_completion_request(model.clone(), CompletionIntent::UserPrompt, cx);
3768            thread.stream_completion(request, model, cx.active_window(), cx)
3769        });
3770        // Follow the agent
3771        cx.update(|window, cx| {
3772            workspace.update(cx, |workspace, cx| {
3773                workspace.follow(CollaboratorId::Agent, window, cx);
3774            })
3775        });
3776        assert!(cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3777
3778        // Cancel the current completion
3779        thread.update(cx, |thread, cx| {
3780            thread.cancel_last_completion(cx.active_window(), cx)
3781        });
3782
3783        cx.executor().run_until_parked();
3784
3785        // No longer following the agent
3786        assert!(!cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3787    }
3788
3789    #[gpui::test]
3790    async fn test_reinserting_creases_for_edited_message(cx: &mut TestAppContext) {
3791        init_test_settings(cx);
3792
3793        let project = create_test_project(cx, json!({})).await;
3794
3795        let (cx, active_thread, _, thread, model) =
3796            setup_test_environment(cx, project.clone()).await;
3797        cx.update(|_, cx| {
3798            LanguageModelRegistry::global(cx).update(cx, |registry, cx| {
3799                registry.set_default_model(
3800                    Some(ConfiguredModel {
3801                        provider: Arc::new(FakeLanguageModelProvider),
3802                        model,
3803                    }),
3804                    cx,
3805                );
3806            });
3807        });
3808
3809        let creases = vec![MessageCrease {
3810            range: 14..22,
3811            icon_path: "icon".into(),
3812            label: "foo.txt".into(),
3813            context: None,
3814        }];
3815
3816        let message = thread.update(cx, |thread, cx| {
3817            let message_id = thread.insert_user_message(
3818                "Tell me about @foo.txt",
3819                ContextLoadResult::default(),
3820                None,
3821                creases,
3822                cx,
3823            );
3824            thread.message(message_id).cloned().unwrap()
3825        });
3826
3827        active_thread.update_in(cx, |active_thread, window, cx| {
3828            if let Some(message_text) = message.segments.first().and_then(MessageSegment::text) {
3829                active_thread.start_editing_message(
3830                    message.id,
3831                    message_text,
3832                    message.creases.as_slice(),
3833                    window,
3834                    cx,
3835                );
3836            }
3837            let editor = active_thread
3838                .editing_message
3839                .as_ref()
3840                .unwrap()
3841                .1
3842                .editor
3843                .clone();
3844            editor.update(cx, |editor, cx| editor.edit([(0..13, "modified")], cx));
3845            active_thread.confirm_editing_message(&Default::default(), window, cx);
3846        });
3847        cx.run_until_parked();
3848
3849        let message = thread.update(cx, |thread, _| thread.message(message.id).cloned().unwrap());
3850        active_thread.update_in(cx, |active_thread, window, cx| {
3851            if let Some(message_text) = message.segments.first().and_then(MessageSegment::text) {
3852                active_thread.start_editing_message(
3853                    message.id,
3854                    message_text,
3855                    message.creases.as_slice(),
3856                    window,
3857                    cx,
3858                );
3859            }
3860            let editor = active_thread
3861                .editing_message
3862                .as_ref()
3863                .unwrap()
3864                .1
3865                .editor
3866                .clone();
3867            let text = editor.update(cx, |editor, cx| editor.text(cx));
3868            assert_eq!(text, "modified @foo.txt");
3869        });
3870    }
3871
3872    #[gpui::test]
3873    async fn test_editing_message_cancels_previous_completion(cx: &mut TestAppContext) {
3874        init_test_settings(cx);
3875
3876        let project = create_test_project(cx, json!({})).await;
3877
3878        let (cx, active_thread, _, thread, model) =
3879            setup_test_environment(cx, project.clone()).await;
3880
3881        cx.update(|_, cx| {
3882            LanguageModelRegistry::global(cx).update(cx, |registry, cx| {
3883                registry.set_default_model(
3884                    Some(ConfiguredModel {
3885                        provider: Arc::new(FakeLanguageModelProvider),
3886                        model: model.clone(),
3887                    }),
3888                    cx,
3889                );
3890            });
3891        });
3892
3893        // Track thread events to verify cancellation
3894        let cancellation_events = Arc::new(std::sync::Mutex::new(Vec::new()));
3895        let new_request_events = Arc::new(std::sync::Mutex::new(Vec::new()));
3896
3897        let _subscription = cx.update(|_, cx| {
3898            let cancellation_events = cancellation_events.clone();
3899            let new_request_events = new_request_events.clone();
3900            cx.subscribe(
3901                &thread,
3902                move |_thread, event: &ThreadEvent, _cx| match event {
3903                    ThreadEvent::CompletionCanceled => {
3904                        cancellation_events.lock().unwrap().push(());
3905                    }
3906                    ThreadEvent::NewRequest => {
3907                        new_request_events.lock().unwrap().push(());
3908                    }
3909                    _ => {}
3910                },
3911            )
3912        });
3913
3914        // Insert a user message and start streaming a response
3915        let message = thread.update(cx, |thread, cx| {
3916            let message_id = thread.insert_user_message(
3917                "Hello, how are you?",
3918                ContextLoadResult::default(),
3919                None,
3920                vec![],
3921                cx,
3922            );
3923            thread.advance_prompt_id();
3924            thread.send_to_model(
3925                model.clone(),
3926                CompletionIntent::UserPrompt,
3927                cx.active_window(),
3928                cx,
3929            );
3930            thread.message(message_id).cloned().unwrap()
3931        });
3932
3933        cx.run_until_parked();
3934
3935        // Verify that a completion is in progress
3936        assert!(cx.read(|cx| thread.read(cx).is_generating()));
3937        assert_eq!(new_request_events.lock().unwrap().len(), 1);
3938
3939        // Edit the message while the completion is still running
3940        active_thread.update_in(cx, |active_thread, window, cx| {
3941            if let Some(message_text) = message.segments.first().and_then(MessageSegment::text) {
3942                active_thread.start_editing_message(
3943                    message.id,
3944                    message_text,
3945                    message.creases.as_slice(),
3946                    window,
3947                    cx,
3948                );
3949            }
3950            let editor = active_thread
3951                .editing_message
3952                .as_ref()
3953                .unwrap()
3954                .1
3955                .editor
3956                .clone();
3957            editor.update(cx, |editor, cx| {
3958                editor.set_text("What is the weather like?", window, cx);
3959            });
3960            active_thread.confirm_editing_message(&Default::default(), window, cx);
3961        });
3962
3963        cx.run_until_parked();
3964
3965        // Verify that the previous completion was cancelled
3966        assert_eq!(cancellation_events.lock().unwrap().len(), 1);
3967
3968        // Verify that a new request was started after cancellation
3969        assert_eq!(new_request_events.lock().unwrap().len(), 2);
3970
3971        // Verify that the edited message contains the new text
3972        let edited_message =
3973            thread.update(cx, |thread, _| thread.message(message.id).cloned().unwrap());
3974        match &edited_message.segments[0] {
3975            MessageSegment::Text(text) => {
3976                assert_eq!(text, "What is the weather like?");
3977            }
3978            _ => panic!("Expected text segment"),
3979        }
3980    }
3981
3982    fn init_test_settings(cx: &mut TestAppContext) {
3983        cx.update(|cx| {
3984            let settings_store = SettingsStore::test(cx);
3985            cx.set_global(settings_store);
3986            language::init(cx);
3987            Project::init_settings(cx);
3988            AgentSettings::register(cx);
3989            prompt_store::init(cx);
3990            thread_store::init(cx);
3991            workspace::init_settings(cx);
3992            language_model::init_settings(cx);
3993            ThemeSettings::register(cx);
3994            EditorSettings::register(cx);
3995            ToolRegistry::default_global(cx);
3996        });
3997    }
3998
3999    // Helper to create a test project with test files
4000    async fn create_test_project(
4001        cx: &mut TestAppContext,
4002        files: serde_json::Value,
4003    ) -> Entity<Project> {
4004        let fs = FakeFs::new(cx.executor());
4005        fs.insert_tree(path!("/test"), files).await;
4006        Project::test(fs, [path!("/test").as_ref()], cx).await
4007    }
4008
4009    async fn setup_test_environment(
4010        cx: &mut TestAppContext,
4011        project: Entity<Project>,
4012    ) -> (
4013        &mut VisualTestContext,
4014        Entity<ActiveThread>,
4015        Entity<Workspace>,
4016        Entity<Thread>,
4017        Arc<dyn LanguageModel>,
4018    ) {
4019        let (workspace, cx) =
4020            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
4021
4022        let thread_store = cx
4023            .update(|_, cx| {
4024                ThreadStore::load(
4025                    project.clone(),
4026                    cx.new(|_| ToolWorkingSet::default()),
4027                    None,
4028                    Arc::new(PromptBuilder::new(None).unwrap()),
4029                    cx,
4030                )
4031            })
4032            .await
4033            .unwrap();
4034
4035        let text_thread_store = cx
4036            .update(|_, cx| {
4037                TextThreadStore::new(
4038                    project.clone(),
4039                    Arc::new(PromptBuilder::new(None).unwrap()),
4040                    Default::default(),
4041                    cx,
4042                )
4043            })
4044            .await
4045            .unwrap();
4046
4047        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
4048        let context_store =
4049            cx.new(|_cx| ContextStore::new(project.downgrade(), Some(thread_store.downgrade())));
4050
4051        let model = FakeLanguageModel::default();
4052        let model: Arc<dyn LanguageModel> = Arc::new(model);
4053
4054        let language_registry = LanguageRegistry::new(cx.executor());
4055        let language_registry = Arc::new(language_registry);
4056
4057        let active_thread = cx.update(|window, cx| {
4058            cx.new(|cx| {
4059                ActiveThread::new(
4060                    thread.clone(),
4061                    thread_store.clone(),
4062                    text_thread_store,
4063                    context_store.clone(),
4064                    language_registry.clone(),
4065                    workspace.downgrade(),
4066                    window,
4067                    cx,
4068                )
4069            })
4070        });
4071
4072        (cx, active_thread, workspace, thread, model)
4073    }
4074}