active_thread.rs

   1use crate::AssistantPanel;
   2use crate::context::{AgentContextHandle, RULES_ICON};
   3use crate::context_picker::{ContextPicker, MentionLink};
   4use crate::context_store::ContextStore;
   5use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
   6use crate::thread::{
   7    LastRestoreCheckpoint, MessageId, MessageSegment, Thread, ThreadError, ThreadEvent,
   8    ThreadFeedback,
   9};
  10use crate::thread_store::{RulesLoadingError, TextThreadStore, ThreadStore};
  11use crate::tool_use::{PendingToolUseStatus, ToolUse};
  12use crate::ui::{
  13    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
  14};
  15use anyhow::Context as _;
  16use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
  17use assistant_tool::ToolUseStatus;
  18use collections::{HashMap, HashSet};
  19use editor::actions::{MoveUp, Paste};
  20use editor::scroll::Autoscroll;
  21use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer};
  22use gpui::{
  23    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardEntry,
  24    ClipboardItem, DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla,
  25    ListAlignment, ListState, MouseButton, PlatformDisplay, ScrollHandle, Stateful,
  26    StyleRefinement, Subscription, Task, TextStyle, TextStyleRefinement, Transformation,
  27    UnderlineStyle, WeakEntity, WindowHandle, linear_color_stop, linear_gradient, list, percentage,
  28    pulsating_between,
  29};
  30use language::{Buffer, Language, LanguageRegistry};
  31use language_model::{
  32    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, Role, StopReason,
  33};
  34use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
  35use markdown::{HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
  36use project::{ProjectEntryId, ProjectItem as _};
  37use rope::Point;
  38use settings::{Settings as _, SettingsStore, update_settings_file};
  39use std::ffi::OsStr;
  40use std::path::Path;
  41use std::rc::Rc;
  42use std::sync::Arc;
  43use std::time::Duration;
  44use text::ToPoint;
  45use theme::ThemeSettings;
  46use ui::utils::WithRemSize;
  47use ui::{
  48    Disclosure, IconButton, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize,
  49    Tooltip, prelude::*,
  50};
  51use util::ResultExt as _;
  52use util::markdown::MarkdownCodeBlock;
  53use workspace::Workspace;
  54use zed_actions::assistant::OpenRulesLibrary;
  55
  56pub struct ActiveThread {
  57    context_store: Entity<ContextStore>,
  58    language_registry: Arc<LanguageRegistry>,
  59    thread_store: Entity<ThreadStore>,
  60    text_thread_store: Entity<TextThreadStore>,
  61    thread: Entity<Thread>,
  62    workspace: WeakEntity<Workspace>,
  63    save_thread_task: Option<Task<()>>,
  64    messages: Vec<MessageId>,
  65    list_state: ListState,
  66    scrollbar_state: ScrollbarState,
  67    show_scrollbar: bool,
  68    hide_scrollbar_task: Option<Task<()>>,
  69    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  70    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  71    editing_message: Option<(MessageId, EditingMessageState)>,
  72    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  73    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  74    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  75    last_error: Option<ThreadError>,
  76    notifications: Vec<WindowHandle<AgentNotification>>,
  77    copied_code_block_ids: HashSet<(MessageId, usize)>,
  78    _subscriptions: Vec<Subscription>,
  79    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  80    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  81    _load_edited_message_context_task: Option<Task<()>>,
  82}
  83
  84struct RenderedMessage {
  85    language_registry: Arc<LanguageRegistry>,
  86    segments: Vec<RenderedMessageSegment>,
  87}
  88
  89#[derive(Clone)]
  90struct RenderedToolUse {
  91    label: Entity<Markdown>,
  92    input: Entity<Markdown>,
  93    output: Entity<Markdown>,
  94}
  95
  96impl RenderedMessage {
  97    fn from_segments(
  98        segments: &[MessageSegment],
  99        language_registry: Arc<LanguageRegistry>,
 100        cx: &mut App,
 101    ) -> Self {
 102        let mut this = Self {
 103            language_registry,
 104            segments: Vec::with_capacity(segments.len()),
 105        };
 106        for segment in segments {
 107            this.push_segment(segment, cx);
 108        }
 109        this
 110    }
 111
 112    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 113        if let Some(RenderedMessageSegment::Thinking {
 114            content,
 115            scroll_handle,
 116        }) = self.segments.last_mut()
 117        {
 118            content.update(cx, |markdown, cx| {
 119                markdown.append(text, cx);
 120            });
 121            scroll_handle.scroll_to_bottom();
 122        } else {
 123            self.segments.push(RenderedMessageSegment::Thinking {
 124                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 125                scroll_handle: ScrollHandle::default(),
 126            });
 127        }
 128    }
 129
 130    fn append_text(&mut self, text: &String, cx: &mut App) {
 131        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 132            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 133        } else {
 134            self.segments
 135                .push(RenderedMessageSegment::Text(parse_markdown(
 136                    SharedString::from(text),
 137                    self.language_registry.clone(),
 138                    cx,
 139                )));
 140        }
 141    }
 142
 143    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 144        match segment {
 145            MessageSegment::Thinking { text, .. } => {
 146                self.segments.push(RenderedMessageSegment::Thinking {
 147                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 148                    scroll_handle: ScrollHandle::default(),
 149                })
 150            }
 151            MessageSegment::Text(text) => {
 152                self.segments
 153                    .push(RenderedMessageSegment::Text(parse_markdown(
 154                        text.into(),
 155                        self.language_registry.clone(),
 156                        cx,
 157                    )))
 158            }
 159            MessageSegment::RedactedThinking(_) => {}
 160        };
 161    }
 162}
 163
 164enum RenderedMessageSegment {
 165    Thinking {
 166        content: Entity<Markdown>,
 167        scroll_handle: ScrollHandle,
 168    },
 169    Text(Entity<Markdown>),
 170}
 171
 172fn parse_markdown(
 173    text: SharedString,
 174    language_registry: Arc<LanguageRegistry>,
 175    cx: &mut App,
 176) -> Entity<Markdown> {
 177    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 178}
 179
 180pub(crate) fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 181    let theme_settings = ThemeSettings::get_global(cx);
 182    let colors = cx.theme().colors();
 183    let ui_font_size = TextSize::Default.rems(cx);
 184    let buffer_font_size = TextSize::Small.rems(cx);
 185    let mut text_style = window.text_style();
 186
 187    text_style.refine(&TextStyleRefinement {
 188        font_family: Some(theme_settings.ui_font.family.clone()),
 189        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 190        font_features: Some(theme_settings.ui_font.features.clone()),
 191        font_size: Some(ui_font_size.into()),
 192        color: Some(cx.theme().colors().text),
 193        ..Default::default()
 194    });
 195
 196    MarkdownStyle {
 197        base_text_style: text_style.clone(),
 198        syntax: cx.theme().syntax().clone(),
 199        selection_background_color: cx.theme().players().local().selection,
 200        code_block_overflow_x_scroll: true,
 201        table_overflow_x_scroll: true,
 202        heading_level_styles: Some(HeadingLevelStyles {
 203            h1: Some(TextStyleRefinement {
 204                font_size: Some(rems(1.15).into()),
 205                ..Default::default()
 206            }),
 207            h2: Some(TextStyleRefinement {
 208                font_size: Some(rems(1.1).into()),
 209                ..Default::default()
 210            }),
 211            h3: Some(TextStyleRefinement {
 212                font_size: Some(rems(1.05).into()),
 213                ..Default::default()
 214            }),
 215            h4: Some(TextStyleRefinement {
 216                font_size: Some(rems(1.).into()),
 217                ..Default::default()
 218            }),
 219            h5: Some(TextStyleRefinement {
 220                font_size: Some(rems(0.95).into()),
 221                ..Default::default()
 222            }),
 223            h6: Some(TextStyleRefinement {
 224                font_size: Some(rems(0.875).into()),
 225                ..Default::default()
 226            }),
 227        }),
 228        code_block: StyleRefinement {
 229            padding: EdgesRefinement {
 230                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 231                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 232                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 233                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 234            },
 235            background: Some(colors.editor_background.into()),
 236            text: Some(TextStyleRefinement {
 237                font_family: Some(theme_settings.buffer_font.family.clone()),
 238                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 239                font_features: Some(theme_settings.buffer_font.features.clone()),
 240                font_size: Some(buffer_font_size.into()),
 241                ..Default::default()
 242            }),
 243            ..Default::default()
 244        },
 245        inline_code: TextStyleRefinement {
 246            font_family: Some(theme_settings.buffer_font.family.clone()),
 247            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 248            font_features: Some(theme_settings.buffer_font.features.clone()),
 249            font_size: Some(buffer_font_size.into()),
 250            background_color: Some(colors.editor_foreground.opacity(0.08)),
 251            ..Default::default()
 252        },
 253        link: TextStyleRefinement {
 254            background_color: Some(colors.editor_foreground.opacity(0.025)),
 255            underline: Some(UnderlineStyle {
 256                color: Some(colors.text_accent.opacity(0.5)),
 257                thickness: px(1.),
 258                ..Default::default()
 259            }),
 260            ..Default::default()
 261        },
 262        link_callback: Some(Rc::new(move |url, cx| {
 263            if MentionLink::is_valid(url) {
 264                let colors = cx.theme().colors();
 265                Some(TextStyleRefinement {
 266                    background_color: Some(colors.element_background),
 267                    ..Default::default()
 268                })
 269            } else {
 270                None
 271            }
 272        })),
 273        ..Default::default()
 274    }
 275}
 276
 277fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 278    let theme_settings = ThemeSettings::get_global(cx);
 279    let colors = cx.theme().colors();
 280    let ui_font_size = TextSize::Default.rems(cx);
 281    let buffer_font_size = TextSize::Small.rems(cx);
 282    let mut text_style = window.text_style();
 283
 284    text_style.refine(&TextStyleRefinement {
 285        font_family: Some(theme_settings.ui_font.family.clone()),
 286        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 287        font_features: Some(theme_settings.ui_font.features.clone()),
 288        font_size: Some(ui_font_size.into()),
 289        color: Some(cx.theme().colors().text),
 290        ..Default::default()
 291    });
 292
 293    MarkdownStyle {
 294        base_text_style: text_style,
 295        syntax: cx.theme().syntax().clone(),
 296        selection_background_color: cx.theme().players().local().selection,
 297        code_block_overflow_x_scroll: true,
 298        code_block: StyleRefinement {
 299            margin: EdgesRefinement::default(),
 300            padding: EdgesRefinement::default(),
 301            background: Some(colors.editor_background.into()),
 302            border_color: None,
 303            border_widths: EdgesRefinement::default(),
 304            text: Some(TextStyleRefinement {
 305                font_family: Some(theme_settings.buffer_font.family.clone()),
 306                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 307                font_features: Some(theme_settings.buffer_font.features.clone()),
 308                font_size: Some(buffer_font_size.into()),
 309                ..Default::default()
 310            }),
 311            ..Default::default()
 312        },
 313        inline_code: TextStyleRefinement {
 314            font_family: Some(theme_settings.buffer_font.family.clone()),
 315            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 316            font_features: Some(theme_settings.buffer_font.features.clone()),
 317            font_size: Some(TextSize::XSmall.rems(cx).into()),
 318            ..Default::default()
 319        },
 320        heading: StyleRefinement {
 321            text: Some(TextStyleRefinement {
 322                font_size: Some(ui_font_size.into()),
 323                ..Default::default()
 324            }),
 325            ..Default::default()
 326        },
 327        ..Default::default()
 328    }
 329}
 330
 331const MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK: usize = 10;
 332
 333fn render_markdown_code_block(
 334    message_id: MessageId,
 335    ix: usize,
 336    kind: &CodeBlockKind,
 337    parsed_markdown: &ParsedMarkdown,
 338    metadata: CodeBlockMetadata,
 339    active_thread: Entity<ActiveThread>,
 340    workspace: WeakEntity<Workspace>,
 341    _window: &Window,
 342    cx: &App,
 343) -> Div {
 344    let label = match kind {
 345        CodeBlockKind::Indented => None,
 346        CodeBlockKind::Fenced => Some(
 347            h_flex()
 348                .gap_1()
 349                .child(
 350                    Icon::new(IconName::Code)
 351                        .color(Color::Muted)
 352                        .size(IconSize::XSmall),
 353                )
 354                .child(Label::new("untitled").size(LabelSize::Small))
 355                .into_any_element(),
 356        ),
 357        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 358            parsed_markdown.languages_by_name.get(raw_language_name),
 359            raw_language_name.clone(),
 360            cx,
 361        )),
 362        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 363            // We tell the model to use /dev/null for the path instead of using ```language
 364            // because otherwise it consistently fails to use code citations.
 365            if path_range.path.starts_with("/dev/null") {
 366                let ext = path_range
 367                    .path
 368                    .extension()
 369                    .and_then(OsStr::to_str)
 370                    .map(|str| SharedString::new(str.to_string()))
 371                    .unwrap_or_default();
 372
 373                render_code_language(
 374                    parsed_markdown
 375                        .languages_by_path
 376                        .get(&path_range.path)
 377                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 378                    ext,
 379                    cx,
 380                )
 381            } else {
 382                let content = if let Some(parent) = path_range.path.parent() {
 383                    h_flex()
 384                        .ml_1()
 385                        .gap_1()
 386                        .child(
 387                            Label::new(file_name.to_string_lossy().to_string())
 388                                .size(LabelSize::Small),
 389                        )
 390                        .child(
 391                            Label::new(parent.to_string_lossy().to_string())
 392                                .color(Color::Muted)
 393                                .size(LabelSize::Small),
 394                        )
 395                        .into_any_element()
 396                } else {
 397                    Label::new(path_range.path.to_string_lossy().to_string())
 398                        .size(LabelSize::Small)
 399                        .ml_1()
 400                        .into_any_element()
 401                };
 402
 403                h_flex()
 404                    .id(("code-block-header-label", ix))
 405                    .w_full()
 406                    .max_w_full()
 407                    .px_1()
 408                    .gap_0p5()
 409                    .cursor_pointer()
 410                    .rounded_sm()
 411                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 412                    .tooltip(Tooltip::text("Jump to File"))
 413                    .child(
 414                        h_flex()
 415                            .gap_0p5()
 416                            .children(
 417                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 418                                    .map(Icon::from_path)
 419                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 420                            )
 421                            .child(content)
 422                            .child(
 423                                Icon::new(IconName::ArrowUpRight)
 424                                    .size(IconSize::XSmall)
 425                                    .color(Color::Ignored),
 426                            ),
 427                    )
 428                    .on_click({
 429                        let path_range = path_range.clone();
 430                        move |_, window, cx| {
 431                            workspace
 432                                .update(cx, {
 433                                    |workspace, cx| {
 434                                        let Some(project_path) = workspace
 435                                            .project()
 436                                            .read(cx)
 437                                            .find_project_path(&path_range.path, cx)
 438                                        else {
 439                                            return;
 440                                        };
 441                                        let Some(target) = path_range.range.as_ref().map(|range| {
 442                                            Point::new(
 443                                                // Line number is 1-based
 444                                                range.start.line.saturating_sub(1),
 445                                                range.start.col.unwrap_or(0),
 446                                            )
 447                                        }) else {
 448                                            return;
 449                                        };
 450                                        let open_task = workspace.open_path(
 451                                            project_path,
 452                                            None,
 453                                            true,
 454                                            window,
 455                                            cx,
 456                                        );
 457                                        window
 458                                            .spawn(cx, async move |cx| {
 459                                                let item = open_task.await?;
 460                                                if let Some(active_editor) =
 461                                                    item.downcast::<Editor>()
 462                                                {
 463                                                    active_editor
 464                                                        .update_in(cx, |editor, window, cx| {
 465                                                            editor.go_to_singleton_buffer_point(
 466                                                                target, window, cx,
 467                                                            );
 468                                                        })
 469                                                        .ok();
 470                                                }
 471                                                anyhow::Ok(())
 472                                            })
 473                                            .detach_and_log_err(cx);
 474                                    }
 475                                })
 476                                .ok();
 477                        }
 478                    })
 479                    .into_any_element()
 480            }
 481        }),
 482    };
 483
 484    let codeblock_was_copied = active_thread
 485        .read(cx)
 486        .copied_code_block_ids
 487        .contains(&(message_id, ix));
 488
 489    let is_expanded = active_thread
 490        .read(cx)
 491        .expanded_code_blocks
 492        .get(&(message_id, ix))
 493        .copied()
 494        .unwrap_or(true);
 495
 496    let codeblock_header_bg = cx
 497        .theme()
 498        .colors()
 499        .element_background
 500        .blend(cx.theme().colors().editor_foreground.opacity(0.01));
 501
 502    let codeblock_header = h_flex()
 503        .py_1()
 504        .pl_1p5()
 505        .pr_1()
 506        .gap_1()
 507        .justify_between()
 508        .border_b_1()
 509        .border_color(cx.theme().colors().border.opacity(0.6))
 510        .bg(codeblock_header_bg)
 511        .rounded_t_md()
 512        .children(label)
 513        .child(
 514            h_flex()
 515                .visible_on_hover("codeblock_container")
 516                .gap_1()
 517                .child(
 518                    IconButton::new(
 519                        ("copy-markdown-code", ix),
 520                        if codeblock_was_copied {
 521                            IconName::Check
 522                        } else {
 523                            IconName::Copy
 524                        },
 525                    )
 526                    .icon_color(Color::Muted)
 527                    .shape(ui::IconButtonShape::Square)
 528                    .tooltip(Tooltip::text("Copy Code"))
 529                    .on_click({
 530                        let active_thread = active_thread.clone();
 531                        let parsed_markdown = parsed_markdown.clone();
 532                        let code_block_range = metadata.content_range.clone();
 533                        move |_event, _window, cx| {
 534                            active_thread.update(cx, |this, cx| {
 535                                this.copied_code_block_ids.insert((message_id, ix));
 536
 537                                let code =
 538                                    parsed_markdown.source()[code_block_range.clone()].to_string();
 539                                cx.write_to_clipboard(ClipboardItem::new_string(code));
 540
 541                                cx.spawn(async move |this, cx| {
 542                                    cx.background_executor().timer(Duration::from_secs(2)).await;
 543
 544                                    cx.update(|cx| {
 545                                        this.update(cx, |this, cx| {
 546                                            this.copied_code_block_ids.remove(&(message_id, ix));
 547                                            cx.notify();
 548                                        })
 549                                    })
 550                                    .ok();
 551                                })
 552                                .detach();
 553                            });
 554                        }
 555                    }),
 556                )
 557                .when(
 558                    metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 559                    |header| {
 560                        header.child(
 561                            IconButton::new(
 562                                ("expand-collapse-code", ix),
 563                                if is_expanded {
 564                                    IconName::ChevronUp
 565                                } else {
 566                                    IconName::ChevronDown
 567                                },
 568                            )
 569                            .icon_color(Color::Muted)
 570                            .shape(ui::IconButtonShape::Square)
 571                            .tooltip(Tooltip::text(if is_expanded {
 572                                "Collapse Code"
 573                            } else {
 574                                "Expand Code"
 575                            }))
 576                            .on_click({
 577                                let active_thread = active_thread.clone();
 578                                move |_event, _window, cx| {
 579                                    active_thread.update(cx, |this, cx| {
 580                                        let is_expanded = this
 581                                            .expanded_code_blocks
 582                                            .entry((message_id, ix))
 583                                            .or_insert(true);
 584                                        *is_expanded = !*is_expanded;
 585                                        cx.notify();
 586                                    });
 587                                }
 588                            }),
 589                        )
 590                    },
 591                ),
 592        );
 593
 594    v_flex()
 595        .group("codeblock_container")
 596        .my_2()
 597        .overflow_hidden()
 598        .rounded_lg()
 599        .border_1()
 600        .border_color(cx.theme().colors().border.opacity(0.6))
 601        .bg(cx.theme().colors().editor_background)
 602        .child(codeblock_header)
 603        .when(
 604            metadata.line_count > MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK,
 605            |this| {
 606                if is_expanded {
 607                    this.h_full()
 608                } else {
 609                    this.max_h_80()
 610                }
 611            },
 612        )
 613}
 614
 615fn render_code_language(
 616    language: Option<&Arc<Language>>,
 617    name_fallback: SharedString,
 618    cx: &App,
 619) -> AnyElement {
 620    let icon_path = language.and_then(|language| {
 621        language
 622            .config()
 623            .matcher
 624            .path_suffixes
 625            .iter()
 626            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 627            .map(Icon::from_path)
 628    });
 629
 630    let language_label = language
 631        .map(|language| language.name().into())
 632        .unwrap_or(name_fallback);
 633
 634    h_flex()
 635        .gap_1()
 636        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::Small)))
 637        .child(Label::new(language_label).size(LabelSize::Small))
 638        .into_any_element()
 639}
 640
 641fn open_markdown_link(
 642    text: SharedString,
 643    workspace: WeakEntity<Workspace>,
 644    window: &mut Window,
 645    cx: &mut App,
 646) {
 647    let Some(workspace) = workspace.upgrade() else {
 648        cx.open_url(&text);
 649        return;
 650    };
 651
 652    match MentionLink::try_parse(&text, &workspace, cx) {
 653        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 654            if entry.is_dir() {
 655                workspace.project().update(cx, |_, cx| {
 656                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 657                })
 658            } else {
 659                workspace
 660                    .open_path(path, None, true, window, cx)
 661                    .detach_and_log_err(cx);
 662            }
 663        }),
 664        Some(MentionLink::Symbol(path, symbol_name)) => {
 665            let open_task = workspace.update(cx, |workspace, cx| {
 666                workspace.open_path(path, None, true, window, cx)
 667            });
 668            window
 669                .spawn(cx, async move |cx| {
 670                    let active_editor = open_task
 671                        .await?
 672                        .downcast::<Editor>()
 673                        .context("Item is not an editor")?;
 674                    active_editor.update_in(cx, |editor, window, cx| {
 675                        let symbol_range = editor
 676                            .buffer()
 677                            .read(cx)
 678                            .snapshot(cx)
 679                            .outline(None)
 680                            .and_then(|outline| {
 681                                outline
 682                                    .find_most_similar(&symbol_name)
 683                                    .map(|(_, item)| item.range.clone())
 684                            })
 685                            .context("Could not find matching symbol")?;
 686
 687                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 688                            s.select_anchor_ranges([symbol_range.start..symbol_range.start])
 689                        });
 690                        anyhow::Ok(())
 691                    })
 692                })
 693                .detach_and_log_err(cx);
 694        }
 695        Some(MentionLink::Selection(path, line_range)) => {
 696            let open_task = workspace.update(cx, |workspace, cx| {
 697                workspace.open_path(path, None, true, window, cx)
 698            });
 699            window
 700                .spawn(cx, async move |cx| {
 701                    let active_editor = open_task
 702                        .await?
 703                        .downcast::<Editor>()
 704                        .context("Item is not an editor")?;
 705                    active_editor.update_in(cx, |editor, window, cx| {
 706                        editor.change_selections(Some(Autoscroll::center()), window, cx, |s| {
 707                            s.select_ranges([Point::new(line_range.start as u32, 0)
 708                                ..Point::new(line_range.start as u32, 0)])
 709                        });
 710                        anyhow::Ok(())
 711                    })
 712                })
 713                .detach_and_log_err(cx);
 714        }
 715        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 716            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 717                panel.update(cx, |panel, cx| {
 718                    panel
 719                        .open_thread_by_id(&thread_id, window, cx)
 720                        .detach_and_log_err(cx)
 721                });
 722            }
 723        }),
 724        Some(MentionLink::TextThread(path)) => workspace.update(cx, |workspace, cx| {
 725            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
 726                panel.update(cx, |panel, cx| {
 727                    panel
 728                        .open_saved_prompt_editor(path, window, cx)
 729                        .detach_and_log_err(cx);
 730                });
 731            }
 732        }),
 733        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 734        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
 735            Box::new(OpenRulesLibrary {
 736                prompt_to_select: Some(prompt_id.0),
 737            }),
 738            cx,
 739        ),
 740        None => cx.open_url(&text),
 741    }
 742}
 743
 744struct EditingMessageState {
 745    editor: Entity<Editor>,
 746    context_strip: Entity<ContextStrip>,
 747    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 748    last_estimated_token_count: Option<usize>,
 749    _subscriptions: [Subscription; 2],
 750    _update_token_count_task: Option<Task<()>>,
 751}
 752
 753impl ActiveThread {
 754    pub fn new(
 755        thread: Entity<Thread>,
 756        thread_store: Entity<ThreadStore>,
 757        text_thread_store: Entity<TextThreadStore>,
 758        context_store: Entity<ContextStore>,
 759        language_registry: Arc<LanguageRegistry>,
 760        workspace: WeakEntity<Workspace>,
 761        window: &mut Window,
 762        cx: &mut Context<Self>,
 763    ) -> Self {
 764        let subscriptions = vec![
 765            cx.observe(&thread, |_, _, cx| cx.notify()),
 766            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 767            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 768            cx.observe_global::<SettingsStore>(|_, cx| cx.notify()),
 769        ];
 770
 771        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
 772            let this = cx.entity().downgrade();
 773            move |ix, window: &mut Window, cx: &mut App| {
 774                this.update(cx, |this, cx| this.render_message(ix, window, cx))
 775                    .unwrap()
 776            }
 777        });
 778        let mut this = Self {
 779            language_registry,
 780            thread_store,
 781            text_thread_store,
 782            context_store,
 783            thread: thread.clone(),
 784            workspace,
 785            save_thread_task: None,
 786            messages: Vec::new(),
 787            rendered_messages_by_id: HashMap::default(),
 788            rendered_tool_uses: HashMap::default(),
 789            expanded_tool_uses: HashMap::default(),
 790            expanded_thinking_segments: HashMap::default(),
 791            expanded_code_blocks: HashMap::default(),
 792            list_state: list_state.clone(),
 793            scrollbar_state: ScrollbarState::new(list_state),
 794            show_scrollbar: false,
 795            hide_scrollbar_task: None,
 796            editing_message: None,
 797            last_error: None,
 798            copied_code_block_ids: HashSet::default(),
 799            notifications: Vec::new(),
 800            _subscriptions: subscriptions,
 801            notification_subscriptions: HashMap::default(),
 802            open_feedback_editors: HashMap::default(),
 803            _load_edited_message_context_task: None,
 804        };
 805
 806        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 807            this.push_message(&message.id, &message.segments, window, cx);
 808
 809            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 810                this.render_tool_use_markdown(
 811                    tool_use.id.clone(),
 812                    tool_use.ui_text.clone(),
 813                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 814                    tool_use.status.text(),
 815                    cx,
 816                );
 817            }
 818        }
 819
 820        this
 821    }
 822
 823    pub fn thread(&self) -> &Entity<Thread> {
 824        &self.thread
 825    }
 826
 827    pub fn is_empty(&self) -> bool {
 828        self.messages.is_empty()
 829    }
 830
 831    pub fn summary(&self, cx: &App) -> Option<SharedString> {
 832        self.thread.read(cx).summary()
 833    }
 834
 835    pub fn summary_or_default(&self, cx: &App) -> SharedString {
 836        self.thread.read(cx).summary_or_default()
 837    }
 838
 839    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 840        self.last_error.take();
 841        self.thread.update(cx, |thread, cx| {
 842            thread.cancel_last_completion(Some(window.window_handle()), cx)
 843        })
 844    }
 845
 846    pub fn last_error(&self) -> Option<ThreadError> {
 847        self.last_error.clone()
 848    }
 849
 850    pub fn clear_last_error(&mut self) {
 851        self.last_error.take();
 852    }
 853
 854    /// Returns the editing message id and the estimated token count in the content
 855    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
 856        self.editing_message
 857            .as_ref()
 858            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 859    }
 860
 861    pub fn context_store(&self) -> &Entity<ContextStore> {
 862        &self.context_store
 863    }
 864
 865    pub fn thread_store(&self) -> &Entity<ThreadStore> {
 866        &self.thread_store
 867    }
 868
 869    pub fn text_thread_store(&self) -> &Entity<TextThreadStore> {
 870        &self.text_thread_store
 871    }
 872
 873    fn push_message(
 874        &mut self,
 875        id: &MessageId,
 876        segments: &[MessageSegment],
 877        _window: &mut Window,
 878        cx: &mut Context<Self>,
 879    ) {
 880        let old_len = self.messages.len();
 881        self.messages.push(*id);
 882        self.list_state.splice(old_len..old_len, 1);
 883
 884        let rendered_message =
 885            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 886        self.rendered_messages_by_id.insert(*id, rendered_message);
 887    }
 888
 889    fn edited_message(
 890        &mut self,
 891        id: &MessageId,
 892        segments: &[MessageSegment],
 893        _window: &mut Window,
 894        cx: &mut Context<Self>,
 895    ) {
 896        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 897            return;
 898        };
 899        self.list_state.splice(index..index + 1, 1);
 900        let rendered_message =
 901            RenderedMessage::from_segments(segments, self.language_registry.clone(), cx);
 902        self.rendered_messages_by_id.insert(*id, rendered_message);
 903    }
 904
 905    fn deleted_message(&mut self, id: &MessageId) {
 906        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 907            return;
 908        };
 909        self.messages.remove(index);
 910        self.list_state.splice(index..index + 1, 0);
 911        self.rendered_messages_by_id.remove(id);
 912    }
 913
 914    fn render_tool_use_markdown(
 915        &mut self,
 916        tool_use_id: LanguageModelToolUseId,
 917        tool_label: impl Into<SharedString>,
 918        tool_input: &str,
 919        tool_output: SharedString,
 920        cx: &mut Context<Self>,
 921    ) {
 922        let rendered = self
 923            .rendered_tool_uses
 924            .entry(tool_use_id.clone())
 925            .or_insert_with(|| RenderedToolUse {
 926                label: cx.new(|cx| {
 927                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 928                }),
 929                input: cx.new(|cx| {
 930                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 931                }),
 932                output: cx.new(|cx| {
 933                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 934                }),
 935            });
 936
 937        rendered.label.update(cx, |this, cx| {
 938            this.replace(tool_label, cx);
 939        });
 940        rendered.input.update(cx, |this, cx| {
 941            this.replace(
 942                MarkdownCodeBlock {
 943                    tag: "json",
 944                    text: tool_input,
 945                }
 946                .to_string(),
 947                cx,
 948            );
 949        });
 950        rendered.output.update(cx, |this, cx| {
 951            this.replace(tool_output, cx);
 952        });
 953    }
 954
 955    fn handle_thread_event(
 956        &mut self,
 957        _thread: &Entity<Thread>,
 958        event: &ThreadEvent,
 959        window: &mut Window,
 960        cx: &mut Context<Self>,
 961    ) {
 962        match event {
 963            ThreadEvent::CancelEditing => {
 964                if self.editing_message.is_some() {
 965                    self.cancel_editing_message(&menu::Cancel, window, cx);
 966                }
 967            }
 968            ThreadEvent::ShowError(error) => {
 969                self.last_error = Some(error.clone());
 970            }
 971            ThreadEvent::NewRequest | ThreadEvent::CompletionCanceled => {
 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 thread = self.thread.read(cx);
 982                    self.show_notification(
 983                        if thread.used_tools_since_last_user_message() {
 984                            "Finished running tools"
 985                        } else {
 986                            "New message"
 987                        },
 988                        IconName::ZedAssistant,
 989                        window,
 990                        cx,
 991                    );
 992                }
 993                _ => {}
 994            },
 995            ThreadEvent::ToolConfirmationNeeded => {
 996                self.show_notification("Waiting for tool confirmation", IconName::Info, window, cx);
 997            }
 998            ThreadEvent::StreamedAssistantText(message_id, text) => {
 999                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
1000                    rendered_message.append_text(text, cx);
1001                }
1002            }
1003            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
1004                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(&message_id) {
1005                    rendered_message.append_thinking(text, cx);
1006                }
1007            }
1008            ThreadEvent::MessageAdded(message_id) => {
1009                if let Some(message_segments) = self
1010                    .thread
1011                    .read(cx)
1012                    .message(*message_id)
1013                    .map(|message| message.segments.clone())
1014                {
1015                    self.push_message(message_id, &message_segments, window, cx);
1016                }
1017
1018                self.save_thread(cx);
1019                cx.notify();
1020            }
1021            ThreadEvent::MessageEdited(message_id) => {
1022                if let Some(message_segments) = self
1023                    .thread
1024                    .read(cx)
1025                    .message(*message_id)
1026                    .map(|message| message.segments.clone())
1027                {
1028                    self.edited_message(message_id, &message_segments, window, cx);
1029                }
1030
1031                self.save_thread(cx);
1032                cx.notify();
1033            }
1034            ThreadEvent::MessageDeleted(message_id) => {
1035                self.deleted_message(message_id);
1036                self.save_thread(cx);
1037                cx.notify();
1038            }
1039            ThreadEvent::UsePendingTools { tool_uses } => {
1040                for tool_use in tool_uses {
1041                    self.render_tool_use_markdown(
1042                        tool_use.id.clone(),
1043                        tool_use.ui_text.clone(),
1044                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1045                        "".into(),
1046                        cx,
1047                    );
1048                }
1049            }
1050            ThreadEvent::StreamedToolUse {
1051                tool_use_id,
1052                ui_text,
1053                input,
1054            } => {
1055                self.render_tool_use_markdown(
1056                    tool_use_id.clone(),
1057                    ui_text.clone(),
1058                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1059                    "".into(),
1060                    cx,
1061                );
1062            }
1063            ThreadEvent::ToolFinished {
1064                pending_tool_use, ..
1065            } => {
1066                if let Some(tool_use) = pending_tool_use {
1067                    self.render_tool_use_markdown(
1068                        tool_use.id.clone(),
1069                        tool_use.ui_text.clone(),
1070                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1071                        self.thread
1072                            .read(cx)
1073                            .output_for_tool(&tool_use.id)
1074                            .map(|output| output.clone().into())
1075                            .unwrap_or("".into()),
1076                        cx,
1077                    );
1078                }
1079            }
1080            ThreadEvent::CheckpointChanged => cx.notify(),
1081            ThreadEvent::ReceivedTextChunk => {}
1082            ThreadEvent::InvalidToolInput {
1083                tool_use_id,
1084                ui_text,
1085                invalid_input_json,
1086            } => {
1087                self.render_tool_use_markdown(
1088                    tool_use_id.clone(),
1089                    ui_text,
1090                    invalid_input_json,
1091                    self.thread
1092                        .read(cx)
1093                        .output_for_tool(tool_use_id)
1094                        .map(|output| output.clone().into())
1095                        .unwrap_or("".into()),
1096                    cx,
1097                );
1098            }
1099            ThreadEvent::MissingToolUse {
1100                tool_use_id,
1101                ui_text,
1102            } => {
1103                self.render_tool_use_markdown(
1104                    tool_use_id.clone(),
1105                    ui_text,
1106                    "",
1107                    self.thread
1108                        .read(cx)
1109                        .output_for_tool(tool_use_id)
1110                        .map(|output| output.clone().into())
1111                        .unwrap_or("".into()),
1112                    cx,
1113                );
1114            }
1115        }
1116    }
1117
1118    fn handle_rules_loading_error(
1119        &mut self,
1120        _thread_store: Entity<ThreadStore>,
1121        error: &RulesLoadingError,
1122        cx: &mut Context<Self>,
1123    ) {
1124        self.last_error = Some(ThreadError::Message {
1125            header: "Error loading rules file".into(),
1126            message: error.message.clone(),
1127        });
1128        cx.notify();
1129    }
1130
1131    fn show_notification(
1132        &mut self,
1133        caption: impl Into<SharedString>,
1134        icon: IconName,
1135        window: &mut Window,
1136        cx: &mut Context<ActiveThread>,
1137    ) {
1138        if window.is_window_active() || !self.notifications.is_empty() {
1139            return;
1140        }
1141
1142        let title = self
1143            .thread
1144            .read(cx)
1145            .summary()
1146            .unwrap_or("Agent Panel".into());
1147
1148        match AssistantSettings::get_global(cx).notify_when_agent_waiting {
1149            NotifyWhenAgentWaiting::PrimaryScreen => {
1150                if let Some(primary) = cx.primary_display() {
1151                    self.pop_up(icon, caption.into(), title.clone(), window, primary, cx);
1152                }
1153            }
1154            NotifyWhenAgentWaiting::AllScreens => {
1155                let caption = caption.into();
1156                for screen in cx.displays() {
1157                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1158                }
1159            }
1160            NotifyWhenAgentWaiting::Never => {
1161                // Don't show anything
1162            }
1163        }
1164    }
1165
1166    fn pop_up(
1167        &mut self,
1168        icon: IconName,
1169        caption: SharedString,
1170        title: SharedString,
1171        window: &mut Window,
1172        screen: Rc<dyn PlatformDisplay>,
1173        cx: &mut Context<'_, ActiveThread>,
1174    ) {
1175        let options = AgentNotification::window_options(screen, cx);
1176
1177        let project_name = self.workspace.upgrade().and_then(|workspace| {
1178            workspace
1179                .read(cx)
1180                .project()
1181                .read(cx)
1182                .visible_worktrees(cx)
1183                .next()
1184                .map(|worktree| worktree.read(cx).root_name().to_string())
1185        });
1186
1187        if let Some(screen_window) = cx
1188            .open_window(options, |_, cx| {
1189                cx.new(|_| {
1190                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1191                })
1192            })
1193            .log_err()
1194        {
1195            if let Some(pop_up) = screen_window.entity(cx).log_err() {
1196                self.notification_subscriptions
1197                    .entry(screen_window)
1198                    .or_insert_with(Vec::new)
1199                    .push(cx.subscribe_in(&pop_up, window, {
1200                        |this, _, event, window, cx| match event {
1201                            AgentNotificationEvent::Accepted => {
1202                                let handle = window.window_handle();
1203                                cx.activate(true);
1204
1205                                let workspace_handle = this.workspace.clone();
1206
1207                                // If there are multiple Zed windows, activate the correct one.
1208                                cx.defer(move |cx| {
1209                                    handle
1210                                        .update(cx, |_view, window, _cx| {
1211                                            window.activate_window();
1212
1213                                            if let Some(workspace) = workspace_handle.upgrade() {
1214                                                workspace.update(_cx, |workspace, cx| {
1215                                                    workspace
1216                                                        .focus_panel::<AssistantPanel>(window, cx);
1217                                                });
1218                                            }
1219                                        })
1220                                        .log_err();
1221                                });
1222
1223                                this.dismiss_notifications(cx);
1224                            }
1225                            AgentNotificationEvent::Dismissed => {
1226                                this.dismiss_notifications(cx);
1227                            }
1228                        }
1229                    }));
1230
1231                self.notifications.push(screen_window);
1232
1233                // If the user manually refocuses the original window, dismiss the popup.
1234                self.notification_subscriptions
1235                    .entry(screen_window)
1236                    .or_insert_with(Vec::new)
1237                    .push({
1238                        let pop_up_weak = pop_up.downgrade();
1239
1240                        cx.observe_window_activation(window, move |_, window, cx| {
1241                            if window.is_window_active() {
1242                                if let Some(pop_up) = pop_up_weak.upgrade() {
1243                                    pop_up.update(cx, |_, cx| {
1244                                        cx.emit(AgentNotificationEvent::Dismissed);
1245                                    });
1246                                }
1247                            }
1248                        })
1249                    });
1250            }
1251        }
1252    }
1253
1254    /// Spawns a task to save the active thread.
1255    ///
1256    /// Only one task to save the thread will be in flight at a time.
1257    fn save_thread(&mut self, cx: &mut Context<Self>) {
1258        let thread = self.thread.clone();
1259        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1260            let task = this
1261                .update(cx, |this, cx| {
1262                    this.thread_store
1263                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1264                })
1265                .ok();
1266
1267            if let Some(task) = task {
1268                task.await.log_err();
1269            }
1270        }));
1271    }
1272
1273    fn start_editing_message(
1274        &mut self,
1275        message_id: MessageId,
1276        message_segments: &[MessageSegment],
1277        window: &mut Window,
1278        cx: &mut Context<Self>,
1279    ) {
1280        // User message should always consist of a single text segment,
1281        // therefore we can skip returning early if it's not a text segment.
1282        let Some(MessageSegment::Text(message_text)) = message_segments.first() else {
1283            return;
1284        };
1285
1286        // Cancel any ongoing streaming when user starts editing a previous message
1287        self.cancel_last_completion(window, cx);
1288
1289        let editor = crate::message_editor::create_editor(
1290            self.workspace.clone(),
1291            self.context_store.downgrade(),
1292            self.thread_store.downgrade(),
1293            self.text_thread_store.downgrade(),
1294            window,
1295            cx,
1296        );
1297        editor.update(cx, |editor, cx| {
1298            editor.set_text(message_text.clone(), window, cx);
1299            editor.focus_handle(cx).focus(window);
1300            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1301        });
1302        let buffer_edited_subscription = cx.subscribe(&editor, |this, _, event, cx| match event {
1303            EditorEvent::BufferEdited => {
1304                this.update_editing_message_token_count(true, cx);
1305            }
1306            _ => {}
1307        });
1308
1309        let context_picker_menu_handle = PopoverMenuHandle::default();
1310        let context_strip = cx.new(|cx| {
1311            ContextStrip::new(
1312                self.context_store.clone(),
1313                self.workspace.clone(),
1314                Some(self.thread_store.downgrade()),
1315                Some(self.text_thread_store.downgrade()),
1316                context_picker_menu_handle.clone(),
1317                SuggestContextKind::File,
1318                window,
1319                cx,
1320            )
1321        });
1322
1323        let context_strip_subscription =
1324            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1325
1326        self.editing_message = Some((
1327            message_id,
1328            EditingMessageState {
1329                editor: editor.clone(),
1330                context_strip,
1331                context_picker_menu_handle,
1332                last_estimated_token_count: None,
1333                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1334                _update_token_count_task: None,
1335            },
1336        ));
1337        self.update_editing_message_token_count(false, cx);
1338        cx.notify();
1339    }
1340
1341    fn handle_context_strip_event(
1342        &mut self,
1343        _context_strip: &Entity<ContextStrip>,
1344        event: &ContextStripEvent,
1345        window: &mut Window,
1346        cx: &mut Context<Self>,
1347    ) {
1348        if let Some((_, state)) = self.editing_message.as_ref() {
1349            match event {
1350                ContextStripEvent::PickerDismissed
1351                | ContextStripEvent::BlurredEmpty
1352                | ContextStripEvent::BlurredDown => {
1353                    let editor_focus_handle = state.editor.focus_handle(cx);
1354                    window.focus(&editor_focus_handle);
1355                }
1356                ContextStripEvent::BlurredUp => {}
1357            }
1358        }
1359    }
1360
1361    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1362        let Some((message_id, state)) = self.editing_message.as_mut() else {
1363            return;
1364        };
1365
1366        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1367        state._update_token_count_task.take();
1368
1369        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1370            state.last_estimated_token_count.take();
1371            return;
1372        };
1373
1374        let editor = state.editor.clone();
1375        let thread = self.thread.clone();
1376        let message_id = *message_id;
1377
1378        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1379            if debounce {
1380                cx.background_executor()
1381                    .timer(Duration::from_millis(200))
1382                    .await;
1383            }
1384
1385            let token_count = if let Some(task) = cx
1386                .update(|cx| {
1387                    let Some(message) = thread.read(cx).message(message_id) else {
1388                        log::error!("Message that was being edited no longer exists");
1389                        return None;
1390                    };
1391                    let message_text = editor.read(cx).text(cx);
1392
1393                    if message_text.is_empty() && message.loaded_context.is_empty() {
1394                        return None;
1395                    }
1396
1397                    let mut request_message = LanguageModelRequestMessage {
1398                        role: language_model::Role::User,
1399                        content: Vec::new(),
1400                        cache: false,
1401                    };
1402
1403                    message
1404                        .loaded_context
1405                        .add_to_request_message(&mut request_message);
1406
1407                    if !message_text.is_empty() {
1408                        request_message
1409                            .content
1410                            .push(MessageContent::Text(message_text));
1411                    }
1412
1413                    let request = language_model::LanguageModelRequest {
1414                        thread_id: None,
1415                        prompt_id: None,
1416                        mode: None,
1417                        messages: vec![request_message],
1418                        tools: vec![],
1419                        stop: vec![],
1420                        temperature: AssistantSettings::temperature_for_model(
1421                            &configured_model.model,
1422                            cx,
1423                        ),
1424                    };
1425
1426                    Some(configured_model.model.count_tokens(request, cx))
1427                })
1428                .ok()
1429                .flatten()
1430            {
1431                task.await.log_err()
1432            } else {
1433                Some(0)
1434            };
1435
1436            if let Some(token_count) = token_count {
1437                this.update(cx, |this, cx| {
1438                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1439                        return;
1440                    };
1441
1442                    state.last_estimated_token_count = Some(token_count);
1443                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1444                })
1445                .ok();
1446            };
1447        }));
1448    }
1449
1450    fn toggle_context_picker(
1451        &mut self,
1452        _: &crate::ToggleContextPicker,
1453        window: &mut Window,
1454        cx: &mut Context<Self>,
1455    ) {
1456        if let Some((_, state)) = self.editing_message.as_mut() {
1457            let handle = state.context_picker_menu_handle.clone();
1458            window.defer(cx, move |window, cx| {
1459                handle.toggle(window, cx);
1460            });
1461        }
1462    }
1463
1464    fn remove_all_context(
1465        &mut self,
1466        _: &crate::RemoveAllContext,
1467        _window: &mut Window,
1468        cx: &mut Context<Self>,
1469    ) {
1470        self.context_store.update(cx, |store, _cx| store.clear());
1471        cx.notify();
1472    }
1473
1474    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1475        if let Some((_, state)) = self.editing_message.as_mut() {
1476            if state.context_picker_menu_handle.is_deployed() {
1477                cx.propagate();
1478            } else {
1479                state.context_strip.focus_handle(cx).focus(window);
1480            }
1481        }
1482    }
1483
1484    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1485        let images = cx
1486            .read_from_clipboard()
1487            .map(|item| {
1488                item.into_entries()
1489                    .filter_map(|entry| {
1490                        if let ClipboardEntry::Image(image) = entry {
1491                            Some(image)
1492                        } else {
1493                            None
1494                        }
1495                    })
1496                    .collect::<Vec<_>>()
1497            })
1498            .unwrap_or_default();
1499
1500        if images.is_empty() {
1501            return;
1502        }
1503        cx.stop_propagation();
1504
1505        self.context_store.update(cx, |store, cx| {
1506            for image in images {
1507                store.add_image_instance(Arc::new(image), cx);
1508            }
1509        });
1510    }
1511
1512    fn cancel_editing_message(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
1513        self.editing_message.take();
1514        cx.notify();
1515    }
1516
1517    fn confirm_editing_message(
1518        &mut self,
1519        _: &menu::Confirm,
1520        window: &mut Window,
1521        cx: &mut Context<Self>,
1522    ) {
1523        let Some((message_id, state)) = self.editing_message.take() else {
1524            return;
1525        };
1526
1527        let Some(model) = self
1528            .thread
1529            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1530        else {
1531            return;
1532        };
1533
1534        if model.provider.must_accept_terms(cx) {
1535            cx.notify();
1536            return;
1537        }
1538
1539        let edited_text = state.editor.read(cx).text(cx);
1540
1541        let new_context = self
1542            .context_store
1543            .read(cx)
1544            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1545
1546        let project = self.thread.read(cx).project().clone();
1547        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1548
1549        let load_context_task =
1550            crate::context::load_context(new_context, &project, &prompt_store, cx);
1551        self._load_edited_message_context_task =
1552            Some(cx.spawn_in(window, async move |this, cx| {
1553                let context = load_context_task.await;
1554                let _ = this
1555                    .update_in(cx, |this, window, cx| {
1556                        this.thread.update(cx, |thread, cx| {
1557                            thread.edit_message(
1558                                message_id,
1559                                Role::User,
1560                                vec![MessageSegment::Text(edited_text)],
1561                                Some(context.loaded_context),
1562                                cx,
1563                            );
1564                            for message_id in this.messages_after(message_id) {
1565                                thread.delete_message(*message_id, cx);
1566                            }
1567                        });
1568
1569                        this.thread.update(cx, |thread, cx| {
1570                            thread.advance_prompt_id();
1571                            thread.send_to_model(model.model, Some(window.window_handle()), cx);
1572                        });
1573                        this._load_edited_message_context_task = None;
1574                        cx.notify();
1575                    })
1576                    .log_err();
1577            }));
1578    }
1579
1580    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1581        self.messages
1582            .iter()
1583            .position(|id| *id == message_id)
1584            .map(|index| &self.messages[index + 1..])
1585            .unwrap_or(&[])
1586    }
1587
1588    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1589        self.cancel_editing_message(&menu::Cancel, window, cx);
1590    }
1591
1592    fn handle_regenerate_click(
1593        &mut self,
1594        _: &ClickEvent,
1595        window: &mut Window,
1596        cx: &mut Context<Self>,
1597    ) {
1598        self.confirm_editing_message(&menu::Confirm, window, cx);
1599    }
1600
1601    fn handle_feedback_click(
1602        &mut self,
1603        message_id: MessageId,
1604        feedback: ThreadFeedback,
1605        window: &mut Window,
1606        cx: &mut Context<Self>,
1607    ) {
1608        let report = self.thread.update(cx, |thread, cx| {
1609            thread.report_message_feedback(message_id, feedback, cx)
1610        });
1611
1612        cx.spawn(async move |this, cx| {
1613            report.await?;
1614            this.update(cx, |_this, cx| cx.notify())
1615        })
1616        .detach_and_log_err(cx);
1617
1618        match feedback {
1619            ThreadFeedback::Positive => {
1620                self.open_feedback_editors.remove(&message_id);
1621            }
1622            ThreadFeedback::Negative => {
1623                self.handle_show_feedback_comments(message_id, window, cx);
1624            }
1625        }
1626    }
1627
1628    fn handle_show_feedback_comments(
1629        &mut self,
1630        message_id: MessageId,
1631        window: &mut Window,
1632        cx: &mut Context<Self>,
1633    ) {
1634        let buffer = cx.new(|cx| {
1635            let empty_string = String::new();
1636            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1637        });
1638
1639        let editor = cx.new(|cx| {
1640            let mut editor = Editor::new(
1641                editor::EditorMode::AutoHeight { max_lines: 4 },
1642                buffer,
1643                None,
1644                window,
1645                cx,
1646            );
1647            editor.set_placeholder_text(
1648                "What went wrong? Share your feedback so we can improve.",
1649                cx,
1650            );
1651            editor
1652        });
1653
1654        editor.read(cx).focus_handle(cx).focus(window);
1655        self.open_feedback_editors.insert(message_id, editor);
1656        cx.notify();
1657    }
1658
1659    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1660        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1661            return;
1662        };
1663
1664        let report_task = self.thread.update(cx, |thread, cx| {
1665            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1666        });
1667
1668        let comments = editor.read(cx).text(cx);
1669        if !comments.is_empty() {
1670            let thread_id = self.thread.read(cx).id().clone();
1671            let comments_value = String::from(comments.as_str());
1672
1673            let message_content = self
1674                .thread
1675                .read(cx)
1676                .message(message_id)
1677                .map(|msg| msg.to_string())
1678                .unwrap_or_default();
1679
1680            telemetry::event!(
1681                "Assistant Thread Feedback Comments",
1682                thread_id,
1683                message_id = message_id.0,
1684                message_content,
1685                comments = comments_value
1686            );
1687
1688            self.open_feedback_editors.remove(&message_id);
1689
1690            cx.spawn(async move |this, cx| {
1691                report_task.await?;
1692                this.update(cx, |_this, cx| cx.notify())
1693            })
1694            .detach_and_log_err(cx);
1695        }
1696    }
1697
1698    fn render_edit_message_editor(
1699        &self,
1700        state: &EditingMessageState,
1701        _window: &mut Window,
1702        cx: &Context<Self>,
1703    ) -> impl IntoElement {
1704        let settings = ThemeSettings::get_global(cx);
1705        let font_size = TextSize::Small
1706            .rems(cx)
1707            .to_pixels(settings.agent_font_size(cx));
1708        let line_height = font_size * 1.75;
1709
1710        let colors = cx.theme().colors();
1711
1712        let text_style = TextStyle {
1713            color: colors.text,
1714            font_family: settings.buffer_font.family.clone(),
1715            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1716            font_features: settings.buffer_font.features.clone(),
1717            font_size: font_size.into(),
1718            line_height: line_height.into(),
1719            ..Default::default()
1720        };
1721
1722        v_flex()
1723            .key_context("EditMessageEditor")
1724            .on_action(cx.listener(Self::toggle_context_picker))
1725            .on_action(cx.listener(Self::remove_all_context))
1726            .on_action(cx.listener(Self::move_up))
1727            .on_action(cx.listener(Self::cancel_editing_message))
1728            .on_action(cx.listener(Self::confirm_editing_message))
1729            .capture_action(cx.listener(Self::paste))
1730            .min_h_6()
1731            .flex_grow()
1732            .w_full()
1733            .gap_2()
1734            .child(EditorElement::new(
1735                &state.editor,
1736                EditorStyle {
1737                    background: colors.editor_background,
1738                    local_player: cx.theme().players().local(),
1739                    text: text_style,
1740                    syntax: cx.theme().syntax().clone(),
1741                    ..Default::default()
1742                },
1743            ))
1744            .child(state.context_strip.clone())
1745    }
1746
1747    fn render_message(&self, ix: usize, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
1748        let message_id = self.messages[ix];
1749        let Some(message) = self.thread.read(cx).message(message_id) else {
1750            return Empty.into_any();
1751        };
1752
1753        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1754            return Empty.into_any();
1755        };
1756
1757        let workspace = self.workspace.clone();
1758        let thread = self.thread.read(cx);
1759
1760        // Get all the data we need from thread before we start using it in closures
1761        let checkpoint = thread.checkpoint_for_message(message_id);
1762        let added_context = thread
1763            .context_for_message(message_id)
1764            .map(|context| AddedContext::new_attached(context, cx))
1765            .collect::<Vec<_>>();
1766
1767        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1768        let has_tool_uses = !tool_uses.is_empty();
1769        let is_generating = thread.is_generating();
1770        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1771
1772        let is_first_message = ix == 0;
1773        let is_last_message = ix == self.messages.len() - 1;
1774
1775        let loading_dots = (is_generating_stale && is_last_message)
1776            .then(|| AnimatedLabel::new("").size(LabelSize::Small));
1777
1778        let editing_message_state = self
1779            .editing_message
1780            .as_ref()
1781            .filter(|(id, _)| *id == message_id)
1782            .map(|(_, state)| state);
1783
1784        let colors = cx.theme().colors();
1785        let editor_bg_color = colors.editor_background;
1786
1787        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::DocumentText)
1788            .icon_size(IconSize::XSmall)
1789            .icon_color(Color::Ignored)
1790            .tooltip(Tooltip::text("Open Thread as Markdown"))
1791            .on_click({
1792                let thread = self.thread.clone();
1793                let workspace = self.workspace.clone();
1794                move |_, window, cx| {
1795                    if let Some(workspace) = workspace.upgrade() {
1796                        open_active_thread_as_markdown(thread.clone(), workspace, window, cx)
1797                            .detach_and_log_err(cx);
1798                    }
1799                }
1800            });
1801
1802        // For all items that should be aligned with the LLM's response.
1803        const RESPONSE_PADDING_X: Pixels = px(19.);
1804
1805        let show_feedback = thread.is_turn_end(ix);
1806
1807        let feedback_container = h_flex()
1808            .group("feedback_container")
1809            .mt_1()
1810            .py_2()
1811            .px(RESPONSE_PADDING_X)
1812            .mr_1()
1813            .opacity(0.4)
1814            .hover(|style| style.opacity(1.))
1815            .gap_1p5()
1816            .flex_wrap()
1817            .justify_end();
1818        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1819            Some(feedback) => feedback_container
1820                .child(
1821                    div().visible_on_hover("feedback_container").child(
1822                        Label::new(match feedback {
1823                            ThreadFeedback::Positive => "Thanks for your feedback!",
1824                            ThreadFeedback::Negative => {
1825                                "We appreciate your feedback and will use it to improve."
1826                            }
1827                        })
1828                    .color(Color::Muted)
1829                    .size(LabelSize::XSmall)
1830                    .truncate())
1831                )
1832                .child(
1833                    h_flex()
1834                        .child(
1835                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1836                                .icon_size(IconSize::XSmall)
1837                                .icon_color(match feedback {
1838                                    ThreadFeedback::Positive => Color::Accent,
1839                                    ThreadFeedback::Negative => Color::Ignored,
1840                                })
1841                                .tooltip(Tooltip::text("Helpful Response"))
1842                                .on_click(cx.listener(move |this, _, window, cx| {
1843                                    this.handle_feedback_click(
1844                                        message_id,
1845                                        ThreadFeedback::Positive,
1846                                        window,
1847                                        cx,
1848                                    );
1849                                })),
1850                        )
1851                        .child(
1852                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1853                                .icon_size(IconSize::XSmall)
1854                                .icon_color(match feedback {
1855                                    ThreadFeedback::Positive => Color::Ignored,
1856                                    ThreadFeedback::Negative => Color::Accent,
1857                                })
1858                                .tooltip(Tooltip::text("Not Helpful"))
1859                                .on_click(cx.listener(move |this, _, window, cx| {
1860                                    this.handle_feedback_click(
1861                                        message_id,
1862                                        ThreadFeedback::Negative,
1863                                        window,
1864                                        cx,
1865                                    );
1866                                })),
1867                        )
1868                        .child(open_as_markdown),
1869                )
1870                .into_any_element(),
1871            None => feedback_container
1872                .child(
1873                    div().visible_on_hover("feedback_container").child(
1874                        Label::new(
1875                            "Rating the thread sends all of your current conversation to the Zed team.",
1876                        )
1877                        .color(Color::Muted)
1878                    .size(LabelSize::XSmall)
1879                    .truncate())
1880                )
1881                .child(
1882                    h_flex()
1883                        .child(
1884                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1885                                .icon_size(IconSize::XSmall)
1886                                .icon_color(Color::Ignored)
1887                                .tooltip(Tooltip::text("Helpful Response"))
1888                                .on_click(cx.listener(move |this, _, window, cx| {
1889                                    this.handle_feedback_click(
1890                                        message_id,
1891                                        ThreadFeedback::Positive,
1892                                        window,
1893                                        cx,
1894                                    );
1895                                })),
1896                        )
1897                        .child(
1898                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1899                                .icon_size(IconSize::XSmall)
1900                                .icon_color(Color::Ignored)
1901                                .tooltip(Tooltip::text("Not Helpful"))
1902                                .on_click(cx.listener(move |this, _, window, cx| {
1903                                    this.handle_feedback_click(
1904                                        message_id,
1905                                        ThreadFeedback::Negative,
1906                                        window,
1907                                        cx,
1908                                    );
1909                                })),
1910                        )
1911                        .child(open_as_markdown),
1912                )
1913                .into_any_element(),
1914        };
1915
1916        let message_is_empty = message.should_display_content();
1917        let has_content = !message_is_empty || !added_context.is_empty();
1918
1919        let message_content = has_content.then(|| {
1920            if let Some(state) = editing_message_state.as_ref() {
1921                self.render_edit_message_editor(state, window, cx)
1922                    .into_any_element()
1923            } else {
1924                v_flex()
1925                    .w_full()
1926                    .gap_1()
1927                    .when(!message_is_empty, |parent| {
1928                        parent.child(div().min_h_6().child(self.render_message_content(
1929                            message_id,
1930                            rendered_message,
1931                            has_tool_uses,
1932                            workspace.clone(),
1933                            window,
1934                            cx,
1935                        )))
1936                    })
1937                    .when(!added_context.is_empty(), |parent| {
1938                        parent.child(h_flex().flex_wrap().gap_1().children(
1939                            added_context.into_iter().map(|added_context| {
1940                                let context = added_context.handle.clone();
1941                                ContextPill::added(added_context, false, false, None).on_click(
1942                                    Rc::new(cx.listener({
1943                                        let workspace = workspace.clone();
1944                                        move |_, _, window, cx| {
1945                                            if let Some(workspace) = workspace.upgrade() {
1946                                                open_context(&context, workspace, window, cx);
1947                                                cx.notify();
1948                                            }
1949                                        }
1950                                    })),
1951                                )
1952                            }),
1953                        ))
1954                    })
1955                    .into_any_element()
1956            }
1957        });
1958
1959        let styled_message = match message.role {
1960            Role::User => v_flex()
1961                .id(("message-container", ix))
1962                .pt_2()
1963                .pl_2()
1964                .pr_2p5()
1965                .pb_4()
1966                .child(
1967                    v_flex()
1968                        .id(("user-message", ix))
1969                        .bg(editor_bg_color)
1970                        .rounded_lg()
1971                        .shadow_md()
1972                        .border_1()
1973                        .border_color(colors.border)
1974                        .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
1975                        .cursor_pointer()
1976                        .child(
1977                            h_flex()
1978                                .p_2p5()
1979                                .gap_1()
1980                                .children(message_content)
1981                                .when_some(editing_message_state, |this, state| {
1982                                    let focus_handle = state.editor.focus_handle(cx).clone();
1983                                    this.w_full().justify_between().child(
1984                                        h_flex()
1985                                            .gap_0p5()
1986                                            .child(
1987                                                IconButton::new(
1988                                                    "cancel-edit-message",
1989                                                    IconName::Close,
1990                                                )
1991                                                .shape(ui::IconButtonShape::Square)
1992                                                .icon_color(Color::Error)
1993                                                .tooltip({
1994                                                    let focus_handle = focus_handle.clone();
1995                                                    move |window, cx| {
1996                                                        Tooltip::for_action_in(
1997                                                            "Cancel Edit",
1998                                                            &menu::Cancel,
1999                                                            &focus_handle,
2000                                                            window,
2001                                                            cx,
2002                                                        )
2003                                                    }
2004                                                })
2005                                                .on_click(cx.listener(Self::handle_cancel_click)),
2006                                            )
2007                                            .child(
2008                                                IconButton::new(
2009                                                    "confirm-edit-message",
2010                                                    IconName::Check,
2011                                                )
2012                                                .disabled(state.editor.read(cx).is_empty(cx))
2013                                                .shape(ui::IconButtonShape::Square)
2014                                                .icon_color(Color::Success)
2015                                                .tooltip({
2016                                                    let focus_handle = focus_handle.clone();
2017                                                    move |window, cx| {
2018                                                        Tooltip::for_action_in(
2019                                                            "Regenerate",
2020                                                            &menu::Confirm,
2021                                                            &focus_handle,
2022                                                            window,
2023                                                            cx,
2024                                                        )
2025                                                    }
2026                                                })
2027                                                .on_click(
2028                                                    cx.listener(Self::handle_regenerate_click),
2029                                                ),
2030                                            ),
2031                                    )
2032                                }),
2033                        )
2034                        .when(editing_message_state.is_none(), |this| {
2035                            this.tooltip(Tooltip::text("Click To Edit"))
2036                        })
2037                        .on_click(cx.listener({
2038                            let message_segments = message.segments.clone();
2039                            move |this, _, window, cx| {
2040                                this.start_editing_message(
2041                                    message_id,
2042                                    &message_segments,
2043                                    window,
2044                                    cx,
2045                                );
2046                            }
2047                        })),
2048                ),
2049            Role::Assistant => v_flex()
2050                .id(("message-container", ix))
2051                .px(RESPONSE_PADDING_X)
2052                .gap_2()
2053                .children(message_content)
2054                .when(has_tool_uses, |parent| {
2055                    parent.children(tool_uses.into_iter().map(|tool_use| {
2056                        self.render_tool_use(tool_use, window, workspace.clone(), cx)
2057                    }))
2058                }),
2059            Role::System => div().id(("message-container", ix)).py_1().px_2().child(
2060                v_flex()
2061                    .bg(colors.editor_background)
2062                    .rounded_sm()
2063                    .child(div().p_4().children(message_content)),
2064            ),
2065        };
2066
2067        let after_editing_message = self
2068            .editing_message
2069            .as_ref()
2070            .map_or(false, |(editing_message_id, _)| {
2071                message_id > *editing_message_id
2072            });
2073
2074        let panel_background = cx.theme().colors().panel_background;
2075
2076        WithRemSize::new(ThemeSettings::get_global(cx).agent_font_size(cx))
2077            .size_full()
2078            .child(
2079                v_flex()
2080                    .w_full()
2081                    .map(|parent| {
2082                        if let Some(checkpoint) = checkpoint.filter(|_| !is_generating) {
2083                            let mut is_pending = false;
2084                            let mut error = None;
2085                            if let Some(last_restore_checkpoint) =
2086                                self.thread.read(cx).last_restore_checkpoint()
2087                            {
2088                                if last_restore_checkpoint.message_id() == message_id {
2089                                    match last_restore_checkpoint {
2090                                        LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2091                                        LastRestoreCheckpoint::Error { error: err, .. } => {
2092                                            error = Some(err.clone());
2093                                        }
2094                                    }
2095                                }
2096                            }
2097
2098                            let restore_checkpoint_button =
2099                                Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2100                                    .icon(if error.is_some() {
2101                                        IconName::XCircle
2102                                    } else {
2103                                        IconName::Undo
2104                                    })
2105                                    .icon_size(IconSize::XSmall)
2106                                    .icon_position(IconPosition::Start)
2107                                    .icon_color(if error.is_some() {
2108                                        Some(Color::Error)
2109                                    } else {
2110                                        None
2111                                    })
2112                                    .label_size(LabelSize::XSmall)
2113                                    .disabled(is_pending)
2114                                    .on_click(cx.listener(move |this, _, _window, cx| {
2115                                        this.thread.update(cx, |thread, cx| {
2116                                            thread
2117                                                .restore_checkpoint(checkpoint.clone(), cx)
2118                                                .detach_and_log_err(cx);
2119                                        });
2120                                    }));
2121
2122                            let restore_checkpoint_button = if is_pending {
2123                                restore_checkpoint_button
2124                                    .with_animation(
2125                                        ("pulsating-restore-checkpoint-button", ix),
2126                                        Animation::new(Duration::from_secs(2))
2127                                            .repeat()
2128                                            .with_easing(pulsating_between(0.6, 1.)),
2129                                        |label, delta| label.alpha(delta),
2130                                    )
2131                                    .into_any_element()
2132                            } else if let Some(error) = error {
2133                                restore_checkpoint_button
2134                                    .tooltip(Tooltip::text(error.to_string()))
2135                                    .into_any_element()
2136                            } else {
2137                                restore_checkpoint_button.into_any_element()
2138                            };
2139
2140                            parent.child(
2141                                h_flex()
2142                                    .pt_2p5()
2143                                    .px_2p5()
2144                                    .w_full()
2145                                    .gap_1()
2146                                    .child(ui::Divider::horizontal())
2147                                    .child(restore_checkpoint_button)
2148                                    .child(ui::Divider::horizontal()),
2149                            )
2150                        } else {
2151                            parent
2152                        }
2153                    })
2154                    .when(is_first_message, |parent| {
2155                        parent.child(self.render_rules_item(cx))
2156                    })
2157                    .child(styled_message)
2158                    .when(is_generating && is_last_message, |this| {
2159                        this.child(
2160                            h_flex()
2161                                .h_8()
2162                                .mt_2()
2163                                .mb_4()
2164                                .ml_4()
2165                                .py_1p5()
2166                                .when_some(loading_dots, |this, loading_dots| {
2167                                    this.child(loading_dots)
2168                                }),
2169                        )
2170                    })
2171                    .when(show_feedback, move |parent| {
2172                        parent.child(feedback_items).when_some(
2173                            self.open_feedback_editors.get(&message_id),
2174                            move |parent, feedback_editor| {
2175                                let focus_handle = feedback_editor.focus_handle(cx);
2176                                parent.child(
2177                                    v_flex()
2178                                        .key_context("AgentFeedbackMessageEditor")
2179                                        .on_action(cx.listener(
2180                                            move |this, _: &menu::Cancel, _, cx| {
2181                                                this.open_feedback_editors.remove(&message_id);
2182                                                cx.notify();
2183                                            },
2184                                        ))
2185                                        .on_action(cx.listener(
2186                                            move |this, _: &menu::Confirm, _, cx| {
2187                                                this.submit_feedback_message(message_id, cx);
2188                                                cx.notify();
2189                                            },
2190                                        ))
2191                                        .on_action(cx.listener(Self::confirm_editing_message))
2192                                        .mb_2()
2193                                        .mx_4()
2194                                        .p_2()
2195                                        .rounded_md()
2196                                        .border_1()
2197                                        .border_color(cx.theme().colors().border)
2198                                        .bg(cx.theme().colors().editor_background)
2199                                        .child(feedback_editor.clone())
2200                                        .child(
2201                                            h_flex()
2202                                                .gap_1()
2203                                                .justify_end()
2204                                                .child(
2205                                                    Button::new(
2206                                                        "dismiss-feedback-message",
2207                                                        "Cancel",
2208                                                    )
2209                                                    .label_size(LabelSize::Small)
2210                                                    .key_binding(
2211                                                        KeyBinding::for_action_in(
2212                                                            &menu::Cancel,
2213                                                            &focus_handle,
2214                                                            window,
2215                                                            cx,
2216                                                        )
2217                                                        .map(|kb| kb.size(rems_from_px(10.))),
2218                                                    )
2219                                                    .on_click(cx.listener(
2220                                                        move |this, _, _window, cx| {
2221                                                            this.open_feedback_editors
2222                                                                .remove(&message_id);
2223                                                            cx.notify();
2224                                                        },
2225                                                    )),
2226                                                )
2227                                                .child(
2228                                                    Button::new(
2229                                                        "submit-feedback-message",
2230                                                        "Share Feedback",
2231                                                    )
2232                                                    .style(ButtonStyle::Tinted(
2233                                                        ui::TintColor::Accent,
2234                                                    ))
2235                                                    .label_size(LabelSize::Small)
2236                                                    .key_binding(
2237                                                        KeyBinding::for_action_in(
2238                                                            &menu::Confirm,
2239                                                            &focus_handle,
2240                                                            window,
2241                                                            cx,
2242                                                        )
2243                                                        .map(|kb| kb.size(rems_from_px(10.))),
2244                                                    )
2245                                                    .on_click(cx.listener(
2246                                                        move |this, _, _window, cx| {
2247                                                            this.submit_feedback_message(
2248                                                                message_id, cx,
2249                                                            );
2250                                                            cx.notify()
2251                                                        },
2252                                                    )),
2253                                                ),
2254                                        ),
2255                                )
2256                            },
2257                        )
2258                    })
2259                    .when(after_editing_message, |parent| {
2260                        // Backdrop to dim out the whole thread below the editing user message
2261                        parent.relative().child(
2262                            div()
2263                                .occlude()
2264                                .absolute()
2265                                .inset_0()
2266                                .size_full()
2267                                .bg(panel_background)
2268                                .opacity(0.8),
2269                        )
2270                    }),
2271            )
2272            .into_any()
2273    }
2274
2275    fn render_message_content(
2276        &self,
2277        message_id: MessageId,
2278        rendered_message: &RenderedMessage,
2279        has_tool_uses: bool,
2280        workspace: WeakEntity<Workspace>,
2281        window: &Window,
2282        cx: &Context<Self>,
2283    ) -> impl IntoElement {
2284        let is_last_message = self.messages.last() == Some(&message_id);
2285        let is_generating = self.thread.read(cx).is_generating();
2286        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2287            rendered_message
2288                .segments
2289                .iter()
2290                .enumerate()
2291                .next_back()
2292                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2293                .map(|(index, _)| index)
2294        } else {
2295            None
2296        };
2297
2298        let message_role = self
2299            .thread
2300            .read(cx)
2301            .message(message_id)
2302            .map(|m| m.role)
2303            .unwrap_or(Role::User);
2304
2305        let is_assistant_message = message_role == Role::Assistant;
2306        let is_user_message = message_role == Role::User;
2307
2308        v_flex()
2309            .text_ui(cx)
2310            .gap_2()
2311            .when(is_user_message, |this| this.text_xs())
2312            .children(
2313                rendered_message.segments.iter().enumerate().map(
2314                    |(index, segment)| match segment {
2315                        RenderedMessageSegment::Thinking {
2316                            content,
2317                            scroll_handle,
2318                        } => self
2319                            .render_message_thinking_segment(
2320                                message_id,
2321                                index,
2322                                content.clone(),
2323                                &scroll_handle,
2324                                Some(index) == pending_thinking_segment_index,
2325                                window,
2326                                cx,
2327                            )
2328                            .into_any_element(),
2329                        RenderedMessageSegment::Text(markdown) => {
2330                            let markdown_element = MarkdownElement::new(
2331                                markdown.clone(),
2332                                if is_user_message {
2333                                    let mut style = default_markdown_style(window, cx);
2334                                    let mut text_style = window.text_style();
2335                                    let theme_settings = ThemeSettings::get_global(cx);
2336
2337                                    let buffer_font = theme_settings.buffer_font.family.clone();
2338                                    let buffer_font_size = TextSize::Small.rems(cx);
2339
2340                                    text_style.refine(&TextStyleRefinement {
2341                                        font_family: Some(buffer_font),
2342                                        font_size: Some(buffer_font_size.into()),
2343                                        ..Default::default()
2344                                    });
2345
2346                                    style.base_text_style = text_style;
2347                                    style
2348                                } else {
2349                                    default_markdown_style(window, cx)
2350                                },
2351                            );
2352
2353                            let markdown_element = if is_assistant_message {
2354                                markdown_element.code_block_renderer(
2355                                    markdown::CodeBlockRenderer::Custom {
2356                                        render: Arc::new({
2357                                            let workspace = workspace.clone();
2358                                            let active_thread = cx.entity();
2359                                            move |kind,
2360                                                  parsed_markdown,
2361                                                  range,
2362                                                  metadata,
2363                                                  window,
2364                                                  cx| {
2365                                                render_markdown_code_block(
2366                                                    message_id,
2367                                                    range.start,
2368                                                    kind,
2369                                                    parsed_markdown,
2370                                                    metadata,
2371                                                    active_thread.clone(),
2372                                                    workspace.clone(),
2373                                                    window,
2374                                                    cx,
2375                                                )
2376                                            }
2377                                        }),
2378                                        transform: Some(Arc::new({
2379                                            let active_thread = cx.entity();
2380                                            let editor_bg = cx.theme().colors().editor_background;
2381
2382                                            move |el, range, metadata, _, cx| {
2383                                                let is_expanded = active_thread
2384                                                    .read(cx)
2385                                                    .expanded_code_blocks
2386                                                    .get(&(message_id, range.start))
2387                                                    .copied()
2388                                                    .unwrap_or(true);
2389
2390                                                if is_expanded
2391                                                    || metadata.line_count
2392                                                        <= MAX_UNCOLLAPSED_LINES_IN_CODE_BLOCK
2393                                                {
2394                                                    return el;
2395                                                }
2396                                                el.child(
2397                                                    div()
2398                                                        .absolute()
2399                                                        .bottom_0()
2400                                                        .left_0()
2401                                                        .w_full()
2402                                                        .h_1_4()
2403                                                        .rounded_b_lg()
2404                                                        .bg(linear_gradient(
2405                                                            0.,
2406                                                            linear_color_stop(editor_bg, 0.),
2407                                                            linear_color_stop(
2408                                                                editor_bg.opacity(0.),
2409                                                                1.,
2410                                                            ),
2411                                                        )),
2412                                                )
2413                                            }
2414                                        })),
2415                                    },
2416                                )
2417                            } else {
2418                                markdown_element.code_block_renderer(
2419                                    markdown::CodeBlockRenderer::Default {
2420                                        copy_button: false,
2421                                        border: true,
2422                                    },
2423                                )
2424                            };
2425
2426                            div()
2427                                .child(markdown_element.on_url_click({
2428                                    let workspace = self.workspace.clone();
2429                                    move |text, window, cx| {
2430                                        open_markdown_link(text, workspace.clone(), window, cx);
2431                                    }
2432                                }))
2433                                .into_any_element()
2434                        }
2435                    },
2436                ),
2437            )
2438    }
2439
2440    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2441        cx.theme().colors().border.opacity(0.5)
2442    }
2443
2444    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2445        cx.theme()
2446            .colors()
2447            .element_background
2448            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2449    }
2450
2451    fn render_message_thinking_segment(
2452        &self,
2453        message_id: MessageId,
2454        ix: usize,
2455        markdown: Entity<Markdown>,
2456        scroll_handle: &ScrollHandle,
2457        pending: bool,
2458        window: &Window,
2459        cx: &Context<Self>,
2460    ) -> impl IntoElement {
2461        let is_open = self
2462            .expanded_thinking_segments
2463            .get(&(message_id, ix))
2464            .copied()
2465            .unwrap_or_default();
2466
2467        let editor_bg = cx.theme().colors().panel_background;
2468
2469        div().map(|this| {
2470            if pending {
2471                this.v_flex()
2472                    .mt_neg_2()
2473                    .mb_1p5()
2474                    .child(
2475                        h_flex()
2476                            .group("disclosure-header")
2477                            .justify_between()
2478                            .child(
2479                                h_flex()
2480                                    .gap_1p5()
2481                                    .child(
2482                                        Icon::new(IconName::LightBulb)
2483                                            .size(IconSize::XSmall)
2484                                            .color(Color::Muted),
2485                                    )
2486                                    .child(AnimatedLabel::new("Thinking").size(LabelSize::Small)),
2487                            )
2488                            .child(
2489                                h_flex()
2490                                    .gap_1()
2491                                    .child(
2492                                        div().visible_on_hover("disclosure-header").child(
2493                                            Disclosure::new("thinking-disclosure", is_open)
2494                                                .opened_icon(IconName::ChevronUp)
2495                                                .closed_icon(IconName::ChevronDown)
2496                                                .on_click(cx.listener({
2497                                                    move |this, _event, _window, _cx| {
2498                                                        let is_open = this
2499                                                            .expanded_thinking_segments
2500                                                            .entry((message_id, ix))
2501                                                            .or_insert(false);
2502
2503                                                        *is_open = !*is_open;
2504                                                    }
2505                                                })),
2506                                        ),
2507                                    )
2508                                    .child({
2509                                        Icon::new(IconName::ArrowCircle)
2510                                            .color(Color::Accent)
2511                                            .size(IconSize::Small)
2512                                            .with_animation(
2513                                                "arrow-circle",
2514                                                Animation::new(Duration::from_secs(2)).repeat(),
2515                                                |icon, delta| {
2516                                                    icon.transform(Transformation::rotate(
2517                                                        percentage(delta),
2518                                                    ))
2519                                                },
2520                                            )
2521                                    }),
2522                            ),
2523                    )
2524                    .when(!is_open, |this| {
2525                        let gradient_overlay = div()
2526                            .rounded_b_lg()
2527                            .h_full()
2528                            .absolute()
2529                            .w_full()
2530                            .bottom_0()
2531                            .left_0()
2532                            .bg(linear_gradient(
2533                                180.,
2534                                linear_color_stop(editor_bg, 1.),
2535                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2536                            ));
2537
2538                        this.child(
2539                            div()
2540                                .relative()
2541                                .bg(editor_bg)
2542                                .rounded_b_lg()
2543                                .mt_2()
2544                                .pl_4()
2545                                .child(
2546                                    div()
2547                                        .id(("thinking-content", ix))
2548                                        .max_h_20()
2549                                        .track_scroll(scroll_handle)
2550                                        .text_ui_sm(cx)
2551                                        .overflow_hidden()
2552                                        .child(
2553                                            MarkdownElement::new(
2554                                                markdown.clone(),
2555                                                default_markdown_style(window, cx),
2556                                            )
2557                                            .on_url_click({
2558                                                let workspace = self.workspace.clone();
2559                                                move |text, window, cx| {
2560                                                    open_markdown_link(
2561                                                        text,
2562                                                        workspace.clone(),
2563                                                        window,
2564                                                        cx,
2565                                                    );
2566                                                }
2567                                            }),
2568                                        ),
2569                                )
2570                                .child(gradient_overlay),
2571                        )
2572                    })
2573                    .when(is_open, |this| {
2574                        this.child(
2575                            div()
2576                                .id(("thinking-content", ix))
2577                                .h_full()
2578                                .bg(editor_bg)
2579                                .text_ui_sm(cx)
2580                                .child(
2581                                    MarkdownElement::new(
2582                                        markdown.clone(),
2583                                        default_markdown_style(window, cx),
2584                                    )
2585                                    .on_url_click({
2586                                        let workspace = self.workspace.clone();
2587                                        move |text, window, cx| {
2588                                            open_markdown_link(text, workspace.clone(), window, cx);
2589                                        }
2590                                    }),
2591                                ),
2592                        )
2593                    })
2594            } else {
2595                this.v_flex()
2596                    .mt_neg_2()
2597                    .child(
2598                        h_flex()
2599                            .group("disclosure-header")
2600                            .pr_1()
2601                            .justify_between()
2602                            .opacity(0.8)
2603                            .hover(|style| style.opacity(1.))
2604                            .child(
2605                                h_flex()
2606                                    .gap_1p5()
2607                                    .child(
2608                                        Icon::new(IconName::LightBulb)
2609                                            .size(IconSize::XSmall)
2610                                            .color(Color::Muted),
2611                                    )
2612                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2613                            )
2614                            .child(
2615                                div().visible_on_hover("disclosure-header").child(
2616                                    Disclosure::new("thinking-disclosure", is_open)
2617                                        .opened_icon(IconName::ChevronUp)
2618                                        .closed_icon(IconName::ChevronDown)
2619                                        .on_click(cx.listener({
2620                                            move |this, _event, _window, _cx| {
2621                                                let is_open = this
2622                                                    .expanded_thinking_segments
2623                                                    .entry((message_id, ix))
2624                                                    .or_insert(false);
2625
2626                                                *is_open = !*is_open;
2627                                            }
2628                                        })),
2629                                ),
2630                            ),
2631                    )
2632                    .child(
2633                        div()
2634                            .id(("thinking-content", ix))
2635                            .relative()
2636                            .mt_1p5()
2637                            .ml_1p5()
2638                            .pl_2p5()
2639                            .border_l_1()
2640                            .border_color(cx.theme().colors().border_variant)
2641                            .text_ui_sm(cx)
2642                            .when(is_open, |this| {
2643                                this.child(
2644                                    MarkdownElement::new(
2645                                        markdown.clone(),
2646                                        default_markdown_style(window, cx),
2647                                    )
2648                                    .on_url_click({
2649                                        let workspace = self.workspace.clone();
2650                                        move |text, window, cx| {
2651                                            open_markdown_link(text, workspace.clone(), window, cx);
2652                                        }
2653                                    }),
2654                                )
2655                            }),
2656                    )
2657            }
2658        })
2659    }
2660
2661    fn render_tool_use(
2662        &self,
2663        tool_use: ToolUse,
2664        window: &mut Window,
2665        workspace: WeakEntity<Workspace>,
2666        cx: &mut Context<Self>,
2667    ) -> impl IntoElement + use<> {
2668        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2669            return card.render(&tool_use.status, window, workspace, cx);
2670        }
2671
2672        let is_open = self
2673            .expanded_tool_uses
2674            .get(&tool_use.id)
2675            .copied()
2676            .unwrap_or_default();
2677
2678        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2679
2680        let fs = self
2681            .workspace
2682            .upgrade()
2683            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2684        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2685        let needs_confirmation_tools = tool_use.needs_confirmation;
2686
2687        let status_icons = div().child(match &tool_use.status {
2688            ToolUseStatus::NeedsConfirmation => {
2689                let icon = Icon::new(IconName::Warning)
2690                    .color(Color::Warning)
2691                    .size(IconSize::Small);
2692                icon.into_any_element()
2693            }
2694            ToolUseStatus::Pending
2695            | ToolUseStatus::InputStillStreaming
2696            | ToolUseStatus::Running => {
2697                let icon = Icon::new(IconName::ArrowCircle)
2698                    .color(Color::Accent)
2699                    .size(IconSize::Small);
2700                icon.with_animation(
2701                    "arrow-circle",
2702                    Animation::new(Duration::from_secs(2)).repeat(),
2703                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2704                )
2705                .into_any_element()
2706            }
2707            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2708            ToolUseStatus::Error(_) => {
2709                let icon = Icon::new(IconName::Close)
2710                    .color(Color::Error)
2711                    .size(IconSize::Small);
2712                icon.into_any_element()
2713            }
2714        });
2715
2716        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2717        let results_content_container = || v_flex().p_2().gap_0p5();
2718
2719        let results_content = v_flex()
2720            .gap_1()
2721            .child(
2722                results_content_container()
2723                    .child(
2724                        Label::new("Input")
2725                            .size(LabelSize::XSmall)
2726                            .color(Color::Muted)
2727                            .buffer_font(cx),
2728                    )
2729                    .child(
2730                        div()
2731                            .w_full()
2732                            .text_ui_sm(cx)
2733                            .children(rendered_tool_use.as_ref().map(|rendered| {
2734                                MarkdownElement::new(
2735                                    rendered.input.clone(),
2736                                    tool_use_markdown_style(window, cx),
2737                                )
2738                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2739                                    copy_button: false,
2740                                    border: false,
2741                                })
2742                                .on_url_click({
2743                                    let workspace = self.workspace.clone();
2744                                    move |text, window, cx| {
2745                                        open_markdown_link(text, workspace.clone(), window, cx);
2746                                    }
2747                                })
2748                            })),
2749                    ),
2750            )
2751            .map(|container| match tool_use.status {
2752                ToolUseStatus::Finished(_) => container.child(
2753                    results_content_container()
2754                        .border_t_1()
2755                        .border_color(self.tool_card_border_color(cx))
2756                        .child(
2757                            Label::new("Result")
2758                                .size(LabelSize::XSmall)
2759                                .color(Color::Muted)
2760                                .buffer_font(cx),
2761                        )
2762                        .child(div().w_full().text_ui_sm(cx).children(
2763                            rendered_tool_use.as_ref().map(|rendered| {
2764                                MarkdownElement::new(
2765                                    rendered.output.clone(),
2766                                    tool_use_markdown_style(window, cx),
2767                                )
2768                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2769                                    copy_button: false,
2770                                    border: false,
2771                                })
2772                                .on_url_click({
2773                                    let workspace = self.workspace.clone();
2774                                    move |text, window, cx| {
2775                                        open_markdown_link(text, workspace.clone(), window, cx);
2776                                    }
2777                                })
2778                                .into_any_element()
2779                            }),
2780                        )),
2781                ),
2782                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2783                    results_content_container()
2784                        .border_t_1()
2785                        .border_color(self.tool_card_border_color(cx))
2786                        .child(
2787                            h_flex()
2788                                .gap_1()
2789                                .child(
2790                                    Icon::new(IconName::ArrowCircle)
2791                                        .size(IconSize::Small)
2792                                        .color(Color::Accent)
2793                                        .with_animation(
2794                                            "arrow-circle",
2795                                            Animation::new(Duration::from_secs(2)).repeat(),
2796                                            |icon, delta| {
2797                                                icon.transform(Transformation::rotate(percentage(
2798                                                    delta,
2799                                                )))
2800                                            },
2801                                        ),
2802                                )
2803                                .child(
2804                                    Label::new("Running…")
2805                                        .size(LabelSize::XSmall)
2806                                        .color(Color::Muted)
2807                                        .buffer_font(cx),
2808                                ),
2809                        ),
2810                ),
2811                ToolUseStatus::Error(_) => container.child(
2812                    results_content_container()
2813                        .border_t_1()
2814                        .border_color(self.tool_card_border_color(cx))
2815                        .child(
2816                            Label::new("Error")
2817                                .size(LabelSize::XSmall)
2818                                .color(Color::Muted)
2819                                .buffer_font(cx),
2820                        )
2821                        .child(
2822                            div()
2823                                .text_ui_sm(cx)
2824                                .children(rendered_tool_use.as_ref().map(|rendered| {
2825                                    MarkdownElement::new(
2826                                        rendered.output.clone(),
2827                                        tool_use_markdown_style(window, cx),
2828                                    )
2829                                    .on_url_click({
2830                                        let workspace = self.workspace.clone();
2831                                        move |text, window, cx| {
2832                                            open_markdown_link(text, workspace.clone(), window, cx);
2833                                        }
2834                                    })
2835                                    .into_any_element()
2836                                })),
2837                        ),
2838                ),
2839                ToolUseStatus::Pending => container,
2840                ToolUseStatus::NeedsConfirmation => container.child(
2841                    results_content_container()
2842                        .border_t_1()
2843                        .border_color(self.tool_card_border_color(cx))
2844                        .child(
2845                            Label::new("Asking Permission")
2846                                .size(LabelSize::Small)
2847                                .color(Color::Muted)
2848                                .buffer_font(cx),
2849                        ),
2850                ),
2851            });
2852
2853        let gradient_overlay = |color: Hsla| {
2854            div()
2855                .h_full()
2856                .absolute()
2857                .w_12()
2858                .bottom_0()
2859                .map(|element| {
2860                    if is_status_finished {
2861                        element.right_6()
2862                    } else {
2863                        element.right(px(44.))
2864                    }
2865                })
2866                .bg(linear_gradient(
2867                    90.,
2868                    linear_color_stop(color, 1.),
2869                    linear_color_stop(color.opacity(0.2), 0.),
2870                ))
2871        };
2872
2873        v_flex().gap_1().mb_2().map(|element| {
2874            if !needs_confirmation_tools {
2875                element.child(
2876                    v_flex()
2877                        .child(
2878                            h_flex()
2879                                .group("disclosure-header")
2880                                .relative()
2881                                .gap_1p5()
2882                                .justify_between()
2883                                .opacity(0.8)
2884                                .hover(|style| style.opacity(1.))
2885                                .when(!is_status_finished, |this| this.pr_2())
2886                                .child(
2887                                    h_flex()
2888                                        .id("tool-label-container")
2889                                        .gap_1p5()
2890                                        .max_w_full()
2891                                        .overflow_x_scroll()
2892                                        .child(
2893                                            Icon::new(tool_use.icon)
2894                                                .size(IconSize::XSmall)
2895                                                .color(Color::Muted),
2896                                        )
2897                                        .child(
2898                                            h_flex().pr_8().text_size(rems(0.8125)).children(
2899                                                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| {
2900                                                    open_markdown_link(text, workspace.clone(), window, cx);
2901                                                }}))
2902                                            ),
2903                                        ),
2904                                )
2905                                .child(
2906                                    h_flex()
2907                                        .gap_1()
2908                                        .child(
2909                                            div().visible_on_hover("disclosure-header").child(
2910                                                Disclosure::new("tool-use-disclosure", is_open)
2911                                                    .opened_icon(IconName::ChevronUp)
2912                                                    .closed_icon(IconName::ChevronDown)
2913                                                    .on_click(cx.listener({
2914                                                        let tool_use_id = tool_use.id.clone();
2915                                                        move |this, _event, _window, _cx| {
2916                                                            let is_open = this
2917                                                                .expanded_tool_uses
2918                                                                .entry(tool_use_id.clone())
2919                                                                .or_insert(false);
2920
2921                                                            *is_open = !*is_open;
2922                                                        }
2923                                                    })),
2924                                            ),
2925                                        )
2926                                        .child(status_icons),
2927                                )
2928                                .child(gradient_overlay(cx.theme().colors().panel_background)),
2929                        )
2930                        .map(|parent| {
2931                            if !is_open {
2932                                return parent;
2933                            }
2934
2935                            parent.child(
2936                                v_flex()
2937                                    .mt_1()
2938                                    .border_1()
2939                                    .border_color(self.tool_card_border_color(cx))
2940                                    .bg(cx.theme().colors().editor_background)
2941                                    .rounded_lg()
2942                                    .child(results_content),
2943                            )
2944                        }),
2945                )
2946            } else {
2947                v_flex()
2948                    .mb_2()
2949                    .rounded_lg()
2950                    .border_1()
2951                    .border_color(self.tool_card_border_color(cx))
2952                    .overflow_hidden()
2953                    .child(
2954                        h_flex()
2955                            .group("disclosure-header")
2956                            .relative()
2957                            .justify_between()
2958                            .py_1()
2959                            .map(|element| {
2960                                if is_status_finished {
2961                                    element.pl_2().pr_0p5()
2962                                } else {
2963                                    element.px_2()
2964                                }
2965                            })
2966                            .bg(self.tool_card_header_bg(cx))
2967                            .map(|element| {
2968                                if is_open {
2969                                    element.border_b_1().rounded_t_md()
2970                                } else if needs_confirmation {
2971                                    element.rounded_t_md()
2972                                } else {
2973                                    element.rounded_md()
2974                                }
2975                            })
2976                            .border_color(self.tool_card_border_color(cx))
2977                            .child(
2978                                h_flex()
2979                                    .id("tool-label-container")
2980                                    .gap_1p5()
2981                                    .max_w_full()
2982                                    .overflow_x_scroll()
2983                                    .child(
2984                                        Icon::new(tool_use.icon)
2985                                            .size(IconSize::XSmall)
2986                                            .color(Color::Muted),
2987                                    )
2988                                    .child(
2989                                        h_flex().pr_8().text_ui_sm(cx).children(
2990                                            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| {
2991                                                open_markdown_link(text, workspace.clone(), window, cx);
2992                                            }}))
2993                                        ),
2994                                    ),
2995                            )
2996                            .child(
2997                                h_flex()
2998                                    .gap_1()
2999                                    .child(
3000                                        div().visible_on_hover("disclosure-header").child(
3001                                            Disclosure::new("tool-use-disclosure", is_open)
3002                                                .opened_icon(IconName::ChevronUp)
3003                                                .closed_icon(IconName::ChevronDown)
3004                                                .on_click(cx.listener({
3005                                                    let tool_use_id = tool_use.id.clone();
3006                                                    move |this, _event, _window, _cx| {
3007                                                        let is_open = this
3008                                                            .expanded_tool_uses
3009                                                            .entry(tool_use_id.clone())
3010                                                            .or_insert(false);
3011
3012                                                        *is_open = !*is_open;
3013                                                    }
3014                                                })),
3015                                        ),
3016                                    )
3017                                    .child(status_icons),
3018                            )
3019                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
3020                    )
3021                    .map(|parent| {
3022                        if !is_open {
3023                            return parent;
3024                        }
3025
3026                        parent.child(
3027                            v_flex()
3028                                .bg(cx.theme().colors().editor_background)
3029                                .map(|element| {
3030                                    if  needs_confirmation {
3031                                        element.rounded_none()
3032                                    } else {
3033                                        element.rounded_b_lg()
3034                                    }
3035                                })
3036                                .child(results_content),
3037                        )
3038                    })
3039                    .when(needs_confirmation, |this| {
3040                        this.child(
3041                            h_flex()
3042                                .py_1()
3043                                .pl_2()
3044                                .pr_1()
3045                                .gap_1()
3046                                .justify_between()
3047                                .bg(cx.theme().colors().editor_background)
3048                                .border_t_1()
3049                                .border_color(self.tool_card_border_color(cx))
3050                                .rounded_b_lg()
3051                                .child(
3052                                    AnimatedLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3053                                )
3054                                .child(
3055                                    h_flex()
3056                                        .gap_0p5()
3057                                        .child({
3058                                            let tool_id = tool_use.id.clone();
3059                                            Button::new(
3060                                                "always-allow-tool-action",
3061                                                "Always Allow",
3062                                            )
3063                                            .label_size(LabelSize::Small)
3064                                            .icon(IconName::CheckDouble)
3065                                            .icon_position(IconPosition::Start)
3066                                            .icon_size(IconSize::Small)
3067                                            .icon_color(Color::Success)
3068                                            .tooltip(move |window, cx|  {
3069                                                Tooltip::with_meta(
3070                                                    "Never ask for permission",
3071                                                    None,
3072                                                    "Restore the original behavior in your Agent Panel settings",
3073                                                    window,
3074                                                    cx,
3075                                                )
3076                                            })
3077                                            .on_click(cx.listener(
3078                                                move |this, event, window, cx| {
3079                                                    if let Some(fs) = fs.clone() {
3080                                                        update_settings_file::<AssistantSettings>(
3081                                                            fs.clone(),
3082                                                            cx,
3083                                                            |settings, _| {
3084                                                                settings.set_always_allow_tool_actions(true);
3085                                                            },
3086                                                        );
3087                                                    }
3088                                                    this.handle_allow_tool(
3089                                                        tool_id.clone(),
3090                                                        event,
3091                                                        window,
3092                                                        cx,
3093                                                    )
3094                                                },
3095                                            ))
3096                                        })
3097                                        .child(ui::Divider::vertical())
3098                                        .child({
3099                                            let tool_id = tool_use.id.clone();
3100                                            Button::new("allow-tool-action", "Allow")
3101                                                .label_size(LabelSize::Small)
3102                                                .icon(IconName::Check)
3103                                                .icon_position(IconPosition::Start)
3104                                                .icon_size(IconSize::Small)
3105                                                .icon_color(Color::Success)
3106                                                .on_click(cx.listener(
3107                                                    move |this, event, window, cx| {
3108                                                        this.handle_allow_tool(
3109                                                            tool_id.clone(),
3110                                                            event,
3111                                                            window,
3112                                                            cx,
3113                                                        )
3114                                                    },
3115                                                ))
3116                                        })
3117                                        .child({
3118                                            let tool_id = tool_use.id.clone();
3119                                            let tool_name: Arc<str> = tool_use.name.into();
3120                                            Button::new("deny-tool", "Deny")
3121                                                .label_size(LabelSize::Small)
3122                                                .icon(IconName::Close)
3123                                                .icon_position(IconPosition::Start)
3124                                                .icon_size(IconSize::Small)
3125                                                .icon_color(Color::Error)
3126                                                .on_click(cx.listener(
3127                                                    move |this, event, window, cx| {
3128                                                        this.handle_deny_tool(
3129                                                            tool_id.clone(),
3130                                                            tool_name.clone(),
3131                                                            event,
3132                                                            window,
3133                                                            cx,
3134                                                        )
3135                                                    },
3136                                                ))
3137                                        }),
3138                                ),
3139                        )
3140                    })
3141            }
3142        }).into_any_element()
3143    }
3144
3145    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3146        let project_context = self.thread.read(cx).project_context();
3147        let project_context = project_context.borrow();
3148        let Some(project_context) = project_context.as_ref() else {
3149            return div().into_any();
3150        };
3151
3152        let user_rules_text = if project_context.user_rules.is_empty() {
3153            None
3154        } else if project_context.user_rules.len() == 1 {
3155            let user_rules = &project_context.user_rules[0];
3156
3157            match user_rules.title.as_ref() {
3158                Some(title) => Some(format!("Using \"{title}\" user rule")),
3159                None => Some("Using user rule".into()),
3160            }
3161        } else {
3162            Some(format!(
3163                "Using {} user rules",
3164                project_context.user_rules.len()
3165            ))
3166        };
3167
3168        let first_user_rules_id = project_context
3169            .user_rules
3170            .first()
3171            .map(|user_rules| user_rules.uuid.0);
3172
3173        let rules_files = project_context
3174            .worktrees
3175            .iter()
3176            .filter_map(|worktree| worktree.rules_file.as_ref())
3177            .collect::<Vec<_>>();
3178
3179        let rules_file_text = match rules_files.as_slice() {
3180            &[] => None,
3181            &[rules_file] => Some(format!(
3182                "Using project {:?} file",
3183                rules_file.path_in_worktree
3184            )),
3185            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3186        };
3187
3188        if user_rules_text.is_none() && rules_file_text.is_none() {
3189            return div().into_any();
3190        }
3191
3192        v_flex()
3193            .pt_2()
3194            .px_2p5()
3195            .gap_1()
3196            .when_some(user_rules_text, |parent, user_rules_text| {
3197                parent.child(
3198                    h_flex()
3199                        .w_full()
3200                        .child(
3201                            Icon::new(RULES_ICON)
3202                                .size(IconSize::XSmall)
3203                                .color(Color::Disabled),
3204                        )
3205                        .child(
3206                            Label::new(user_rules_text)
3207                                .size(LabelSize::XSmall)
3208                                .color(Color::Muted)
3209                                .truncate()
3210                                .buffer_font(cx)
3211                                .ml_1p5()
3212                                .mr_0p5(),
3213                        )
3214                        .child(
3215                            IconButton::new("open-prompt-library", IconName::ArrowUpRightAlt)
3216                                .shape(ui::IconButtonShape::Square)
3217                                .icon_size(IconSize::XSmall)
3218                                .icon_color(Color::Ignored)
3219                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3220                                .tooltip(Tooltip::text("View User Rules"))
3221                                .on_click(move |_event, window, cx| {
3222                                    window.dispatch_action(
3223                                        Box::new(OpenRulesLibrary {
3224                                            prompt_to_select: first_user_rules_id,
3225                                        }),
3226                                        cx,
3227                                    )
3228                                }),
3229                        ),
3230                )
3231            })
3232            .when_some(rules_file_text, |parent, rules_file_text| {
3233                parent.child(
3234                    h_flex()
3235                        .w_full()
3236                        .child(
3237                            Icon::new(IconName::File)
3238                                .size(IconSize::XSmall)
3239                                .color(Color::Disabled),
3240                        )
3241                        .child(
3242                            Label::new(rules_file_text)
3243                                .size(LabelSize::XSmall)
3244                                .color(Color::Muted)
3245                                .buffer_font(cx)
3246                                .ml_1p5()
3247                                .mr_0p5(),
3248                        )
3249                        .child(
3250                            IconButton::new("open-rule", IconName::ArrowUpRightAlt)
3251                                .shape(ui::IconButtonShape::Square)
3252                                .icon_size(IconSize::XSmall)
3253                                .icon_color(Color::Ignored)
3254                                .on_click(cx.listener(Self::handle_open_rules))
3255                                .tooltip(Tooltip::text("View Rules")),
3256                        ),
3257                )
3258            })
3259            .into_any()
3260    }
3261
3262    fn handle_allow_tool(
3263        &mut self,
3264        tool_use_id: LanguageModelToolUseId,
3265        _: &ClickEvent,
3266        window: &mut Window,
3267        cx: &mut Context<Self>,
3268    ) {
3269        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3270            .thread
3271            .read(cx)
3272            .pending_tool(&tool_use_id)
3273            .map(|tool_use| tool_use.status.clone())
3274        {
3275            self.thread.update(cx, |thread, cx| {
3276                thread.run_tool(
3277                    c.tool_use_id.clone(),
3278                    c.ui_text.clone(),
3279                    c.input.clone(),
3280                    &c.messages,
3281                    c.tool.clone(),
3282                    Some(window.window_handle()),
3283                    cx,
3284                );
3285            });
3286        }
3287    }
3288
3289    fn handle_deny_tool(
3290        &mut self,
3291        tool_use_id: LanguageModelToolUseId,
3292        tool_name: Arc<str>,
3293        _: &ClickEvent,
3294        window: &mut Window,
3295        cx: &mut Context<Self>,
3296    ) {
3297        let window_handle = window.window_handle();
3298        self.thread.update(cx, |thread, cx| {
3299            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3300        });
3301    }
3302
3303    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3304        let project_context = self.thread.read(cx).project_context();
3305        let project_context = project_context.borrow();
3306        let Some(project_context) = project_context.as_ref() else {
3307            return;
3308        };
3309
3310        let project_entry_ids = project_context
3311            .worktrees
3312            .iter()
3313            .flat_map(|worktree| worktree.rules_file.as_ref())
3314            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3315            .collect::<Vec<_>>();
3316
3317        self.workspace
3318            .update(cx, move |workspace, cx| {
3319                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3320                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3321                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3322                let project = workspace.project().read(cx);
3323                let project_paths = project_entry_ids
3324                    .into_iter()
3325                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3326                    .collect::<Vec<_>>();
3327                for project_path in project_paths {
3328                    workspace
3329                        .open_path(project_path, None, true, window, cx)
3330                        .detach_and_log_err(cx);
3331                }
3332            })
3333            .ok();
3334    }
3335
3336    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3337        for window in self.notifications.drain(..) {
3338            window
3339                .update(cx, |_, window, _| {
3340                    window.remove_window();
3341                })
3342                .ok();
3343
3344            self.notification_subscriptions.remove(&window);
3345        }
3346    }
3347
3348    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
3349        if !self.show_scrollbar && !self.scrollbar_state.is_dragging() {
3350            return None;
3351        }
3352
3353        Some(
3354            div()
3355                .occlude()
3356                .id("active-thread-scrollbar")
3357                .on_mouse_move(cx.listener(|_, _, _, cx| {
3358                    cx.notify();
3359                    cx.stop_propagation()
3360                }))
3361                .on_hover(|_, _, cx| {
3362                    cx.stop_propagation();
3363                })
3364                .on_any_mouse_down(|_, _, cx| {
3365                    cx.stop_propagation();
3366                })
3367                .on_mouse_up(
3368                    MouseButton::Left,
3369                    cx.listener(|_, _, _, cx| {
3370                        cx.stop_propagation();
3371                    }),
3372                )
3373                .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3374                    cx.notify();
3375                }))
3376                .h_full()
3377                .absolute()
3378                .right_1()
3379                .top_1()
3380                .bottom_0()
3381                .w(px(12.))
3382                .cursor_default()
3383                .children(Scrollbar::vertical(self.scrollbar_state.clone())),
3384        )
3385    }
3386
3387    fn hide_scrollbar_later(&mut self, cx: &mut Context<Self>) {
3388        const SCROLLBAR_SHOW_INTERVAL: Duration = Duration::from_secs(1);
3389        self.hide_scrollbar_task = Some(cx.spawn(async move |thread, cx| {
3390            cx.background_executor()
3391                .timer(SCROLLBAR_SHOW_INTERVAL)
3392                .await;
3393            thread
3394                .update(cx, |thread, cx| {
3395                    if !thread.scrollbar_state.is_dragging() {
3396                        thread.show_scrollbar = false;
3397                        cx.notify();
3398                    }
3399                })
3400                .log_err();
3401        }))
3402    }
3403}
3404
3405pub enum ActiveThreadEvent {
3406    EditingMessageTokenCountChanged,
3407}
3408
3409impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3410
3411impl Render for ActiveThread {
3412    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3413        v_flex()
3414            .size_full()
3415            .relative()
3416            .on_mouse_move(cx.listener(|this, _, _, cx| {
3417                this.show_scrollbar = true;
3418                this.hide_scrollbar_later(cx);
3419                cx.notify();
3420            }))
3421            .on_scroll_wheel(cx.listener(|this, _, _, cx| {
3422                this.show_scrollbar = true;
3423                this.hide_scrollbar_later(cx);
3424                cx.notify();
3425            }))
3426            .on_mouse_up(
3427                MouseButton::Left,
3428                cx.listener(|this, _, _, cx| {
3429                    this.hide_scrollbar_later(cx);
3430                }),
3431            )
3432            .child(list(self.list_state.clone()).flex_grow())
3433            .when_some(self.render_vertical_scrollbar(cx), |this, scrollbar| {
3434                this.child(scrollbar)
3435            })
3436    }
3437}
3438
3439pub(crate) fn open_active_thread_as_markdown(
3440    thread: Entity<Thread>,
3441    workspace: Entity<Workspace>,
3442    window: &mut Window,
3443    cx: &mut App,
3444) -> Task<anyhow::Result<()>> {
3445    let markdown_language_task = workspace
3446        .read(cx)
3447        .app_state()
3448        .languages
3449        .language_for_name("Markdown");
3450
3451    window.spawn(cx, async move |cx| {
3452        let markdown_language = markdown_language_task.await?;
3453
3454        workspace.update_in(cx, |workspace, window, cx| {
3455            let thread = thread.read(cx);
3456            let markdown = thread.to_markdown(cx)?;
3457            let thread_summary = thread
3458                .summary()
3459                .map(|summary| summary.to_string())
3460                .unwrap_or_else(|| "Thread".to_string());
3461
3462            let project = workspace.project().clone();
3463
3464            if !project.read(cx).is_local() {
3465                anyhow::bail!("failed to open active thread as markdown in remote project");
3466            }
3467
3468            let buffer = project.update(cx, |project, cx| {
3469                project.create_local_buffer(&markdown, Some(markdown_language), cx)
3470            });
3471            let buffer =
3472                cx.new(|cx| MultiBuffer::singleton(buffer, cx).with_title(thread_summary.clone()));
3473
3474            workspace.add_item_to_active_pane(
3475                Box::new(cx.new(|cx| {
3476                    let mut editor =
3477                        Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
3478                    editor.set_breadcrumb_header(thread_summary);
3479                    editor
3480                })),
3481                None,
3482                true,
3483                window,
3484                cx,
3485            );
3486
3487            anyhow::Ok(())
3488        })??;
3489        anyhow::Ok(())
3490    })
3491}
3492
3493pub(crate) fn open_context(
3494    context: &AgentContextHandle,
3495    workspace: Entity<Workspace>,
3496    window: &mut Window,
3497    cx: &mut App,
3498) {
3499    match context {
3500        AgentContextHandle::File(file_context) => {
3501            if let Some(project_path) = file_context.project_path(cx) {
3502                workspace.update(cx, |workspace, cx| {
3503                    workspace
3504                        .open_path(project_path, None, true, window, cx)
3505                        .detach_and_log_err(cx);
3506                });
3507            }
3508        }
3509
3510        AgentContextHandle::Directory(directory_context) => {
3511            let entry_id = directory_context.entry_id;
3512            workspace.update(cx, |workspace, cx| {
3513                workspace.project().update(cx, |_project, cx| {
3514                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3515                })
3516            })
3517        }
3518
3519        AgentContextHandle::Symbol(symbol_context) => {
3520            let buffer = symbol_context.buffer.read(cx);
3521            if let Some(project_path) = buffer.project_path(cx) {
3522                let snapshot = buffer.snapshot();
3523                let target_position = symbol_context.range.start.to_point(&snapshot);
3524                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3525                    .detach();
3526            }
3527        }
3528
3529        AgentContextHandle::Selection(selection_context) => {
3530            let buffer = selection_context.buffer.read(cx);
3531            if let Some(project_path) = buffer.project_path(cx) {
3532                let snapshot = buffer.snapshot();
3533                let target_position = selection_context.range.start.to_point(&snapshot);
3534
3535                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3536                    .detach();
3537            }
3538        }
3539
3540        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3541            cx.open_url(&fetched_url_context.url);
3542        }
3543
3544        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3545            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3546                panel.update(cx, |panel, cx| {
3547                    panel.open_thread(thread_context.thread.clone(), window, cx);
3548                });
3549            }
3550        }),
3551
3552        AgentContextHandle::TextThread(text_thread_context) => {
3553            workspace.update(cx, |workspace, cx| {
3554                if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
3555                    panel.update(cx, |panel, cx| {
3556                        panel.open_prompt_editor(text_thread_context.context.clone(), window, cx)
3557                    });
3558                }
3559            })
3560        }
3561
3562        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3563            Box::new(OpenRulesLibrary {
3564                prompt_to_select: Some(rules_context.prompt_id.0),
3565            }),
3566            cx,
3567        ),
3568
3569        AgentContextHandle::Image(_) => {}
3570    }
3571}
3572
3573fn open_editor_at_position(
3574    project_path: project::ProjectPath,
3575    target_position: Point,
3576    workspace: &Entity<Workspace>,
3577    window: &mut Window,
3578    cx: &mut App,
3579) -> Task<()> {
3580    let open_task = workspace.update(cx, |workspace, cx| {
3581        workspace.open_path(project_path, None, true, window, cx)
3582    });
3583    window.spawn(cx, async move |cx| {
3584        if let Some(active_editor) = open_task
3585            .await
3586            .log_err()
3587            .and_then(|item| item.downcast::<Editor>())
3588        {
3589            active_editor
3590                .downgrade()
3591                .update_in(cx, |editor, window, cx| {
3592                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3593                })
3594                .log_err();
3595        }
3596    })
3597}
3598
3599#[cfg(test)]
3600mod tests {
3601    use assistant_tool::{ToolRegistry, ToolWorkingSet};
3602    use editor::EditorSettings;
3603    use fs::FakeFs;
3604    use gpui::{TestAppContext, VisualTestContext};
3605    use language_model::{LanguageModel, fake_provider::FakeLanguageModel};
3606    use project::Project;
3607    use prompt_store::PromptBuilder;
3608    use serde_json::json;
3609    use settings::SettingsStore;
3610    use util::path;
3611
3612    use crate::{ContextLoadResult, thread_store};
3613
3614    use super::*;
3615
3616    #[gpui::test]
3617    async fn test_current_completion_cancelled_when_message_edited(cx: &mut TestAppContext) {
3618        init_test_settings(cx);
3619
3620        let project = create_test_project(
3621            cx,
3622            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
3623        )
3624        .await;
3625
3626        let (cx, active_thread, thread, model) = setup_test_environment(cx, project.clone()).await;
3627
3628        // Insert user message without any context (empty context vector)
3629        let message = thread.update(cx, |thread, cx| {
3630            let message_id = thread.insert_user_message(
3631                "What is the best way to learn Rust?",
3632                ContextLoadResult::default(),
3633                None,
3634                vec![],
3635                cx,
3636            );
3637            thread
3638                .message(message_id)
3639                .expect("message should exist")
3640                .clone()
3641        });
3642
3643        // Stream response to user message
3644        thread.update(cx, |thread, cx| {
3645            let request = thread.to_completion_request(model.clone(), cx);
3646            thread.stream_completion(request, model, cx.active_window(), cx)
3647        });
3648        let generating = thread.update(cx, |thread, _cx| thread.is_generating());
3649        assert!(generating, "There should be one pending completion");
3650
3651        // Edit the previous message
3652        active_thread.update_in(cx, |active_thread, window, cx| {
3653            active_thread.start_editing_message(message.id, &message.segments, window, cx);
3654        });
3655
3656        // Check that the stream was cancelled
3657        let generating = thread.update(cx, |thread, _cx| thread.is_generating());
3658        assert!(!generating, "The completion should have been cancelled");
3659    }
3660
3661    fn init_test_settings(cx: &mut TestAppContext) {
3662        cx.update(|cx| {
3663            let settings_store = SettingsStore::test(cx);
3664            cx.set_global(settings_store);
3665            language::init(cx);
3666            Project::init_settings(cx);
3667            AssistantSettings::register(cx);
3668            prompt_store::init(cx);
3669            thread_store::init(cx);
3670            workspace::init_settings(cx);
3671            language_model::init_settings(cx);
3672            ThemeSettings::register(cx);
3673            EditorSettings::register(cx);
3674            ToolRegistry::default_global(cx);
3675        });
3676    }
3677
3678    // Helper to create a test project with test files
3679    async fn create_test_project(
3680        cx: &mut TestAppContext,
3681        files: serde_json::Value,
3682    ) -> Entity<Project> {
3683        let fs = FakeFs::new(cx.executor());
3684        fs.insert_tree(path!("/test"), files).await;
3685        Project::test(fs, [path!("/test").as_ref()], cx).await
3686    }
3687
3688    async fn setup_test_environment(
3689        cx: &mut TestAppContext,
3690        project: Entity<Project>,
3691    ) -> (
3692        &mut VisualTestContext,
3693        Entity<ActiveThread>,
3694        Entity<Thread>,
3695        Arc<dyn LanguageModel>,
3696    ) {
3697        let (workspace, cx) =
3698            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
3699
3700        let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
3701        let thread_store = cx
3702            .update(|_, cx| {
3703                ThreadStore::load(
3704                    project.clone(),
3705                    cx.new(|_| ToolWorkingSet::default()),
3706                    None,
3707                    prompt_builder.clone(),
3708                    cx,
3709                )
3710            })
3711            .await
3712            .unwrap();
3713        let text_thread_store = cx
3714            .update(|_, cx| {
3715                TextThreadStore::new(project.clone(), prompt_builder, Default::default(), cx)
3716            })
3717            .await
3718            .unwrap();
3719
3720        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
3721        let context_store = cx.new(|_cx| ContextStore::new(project.downgrade(), None));
3722
3723        let model = FakeLanguageModel::default();
3724        let model: Arc<dyn LanguageModel> = Arc::new(model);
3725
3726        let language_registry = LanguageRegistry::new(cx.executor());
3727        let language_registry = Arc::new(language_registry);
3728
3729        let active_thread = cx.update(|window, cx| {
3730            cx.new(|cx| {
3731                ActiveThread::new(
3732                    thread.clone(),
3733                    thread_store.clone(),
3734                    text_thread_store.clone(),
3735                    context_store.clone(),
3736                    language_registry.clone(),
3737                    workspace.downgrade(),
3738                    window,
3739                    cx,
3740                )
3741            })
3742        });
3743
3744        (cx, active_thread, thread, model)
3745    }
3746}