active_thread.rs

   1use crate::context_picker::{ContextPicker, MentionLink};
   2use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
   3use crate::message_editor::{extract_message_creases, insert_message_creases};
   4use crate::ui::{AddedContext, AgentNotification, AgentNotificationEvent, ContextPill};
   5use crate::{AgentPanel, ModelUsageContext};
   6use agent::{
   7    ContextStore, LastRestoreCheckpoint, MessageCrease, MessageId, MessageSegment, TextThreadStore,
   8    Thread, ThreadError, ThreadEvent, ThreadFeedback, ThreadStore, ThreadSummary,
   9    context::{self, AgentContextHandle, RULES_ICON},
  10    thread_store::RulesLoadingError,
  11    tool_use::{PendingToolUseStatus, ToolUse},
  12};
  13use agent_settings::{AgentSettings, NotifyWhenAgentWaiting};
  14use anyhow::Context as _;
  15use assistant_tool::ToolUseStatus;
  16use audio::{Audio, Sound};
  17use cloud_llm_client::CompletionIntent;
  18use collections::{HashMap, HashSet};
  19use editor::actions::{MoveUp, Paste};
  20use editor::scroll::Autoscroll;
  21use editor::{Editor, EditorElement, EditorEvent, EditorStyle, MultiBuffer, SelectionEffects};
  22use gpui::{
  23    AbsoluteLength, Animation, AnimationExt, AnyElement, App, ClickEvent, ClipboardEntry,
  24    ClipboardItem, DefiniteLength, EdgesRefinement, Empty, Entity, EventEmitter, Focusable, Hsla,
  25    ListAlignment, ListOffset, 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::{
  36    HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown, PathWithRange,
  37};
  38use project::{ProjectEntryId, ProjectItem as _};
  39use rope::Point;
  40use settings::{Settings as _, SettingsStore, update_settings_file};
  41use std::ffi::OsStr;
  42use std::path::Path;
  43use std::rc::Rc;
  44use std::sync::Arc;
  45use std::time::Duration;
  46use text::ToPoint;
  47use theme::ThemeSettings;
  48use ui::{
  49    Banner, Disclosure, KeyBinding, PopoverMenuHandle, Scrollbar, ScrollbarState, TextSize,
  50    Tooltip, prelude::*,
  51};
  52use util::ResultExt as _;
  53use util::markdown::MarkdownCodeBlock;
  54use workspace::{CollaboratorId, Workspace};
  55use zed_actions::assistant::OpenRulesLibrary;
  56
  57const CODEBLOCK_CONTAINER_GROUP: &str = "codeblock_container";
  58const EDIT_PREVIOUS_MESSAGE_MIN_LINES: usize = 1;
  59const RESPONSE_PADDING_X: Pixels = px(19.);
  60
  61pub struct ActiveThread {
  62    context_store: Entity<ContextStore>,
  63    language_registry: Arc<LanguageRegistry>,
  64    thread_store: Entity<ThreadStore>,
  65    text_thread_store: Entity<TextThreadStore>,
  66    thread: Entity<Thread>,
  67    workspace: WeakEntity<Workspace>,
  68    save_thread_task: Option<Task<()>>,
  69    messages: Vec<MessageId>,
  70    list_state: ListState,
  71    scrollbar_state: ScrollbarState,
  72    rendered_messages_by_id: HashMap<MessageId, RenderedMessage>,
  73    rendered_tool_uses: HashMap<LanguageModelToolUseId, RenderedToolUse>,
  74    editing_message: Option<(MessageId, EditingMessageState)>,
  75    expanded_tool_uses: HashMap<LanguageModelToolUseId, bool>,
  76    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
  77    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
  78    last_error: Option<ThreadError>,
  79    notifications: Vec<WindowHandle<AgentNotification>>,
  80    copied_code_block_ids: HashSet<(MessageId, usize)>,
  81    _subscriptions: Vec<Subscription>,
  82    notification_subscriptions: HashMap<WindowHandle<AgentNotification>, Vec<Subscription>>,
  83    open_feedback_editors: HashMap<MessageId, Entity<Editor>>,
  84    _load_edited_message_context_task: Option<Task<()>>,
  85}
  86
  87struct RenderedMessage {
  88    language_registry: Arc<LanguageRegistry>,
  89    segments: Vec<RenderedMessageSegment>,
  90}
  91
  92#[derive(Clone)]
  93struct RenderedToolUse {
  94    label: Entity<Markdown>,
  95    input: Entity<Markdown>,
  96    output: Entity<Markdown>,
  97}
  98
  99impl RenderedMessage {
 100    fn from_segments(
 101        segments: &[MessageSegment],
 102        language_registry: Arc<LanguageRegistry>,
 103        cx: &mut App,
 104    ) -> Self {
 105        let mut this = Self {
 106            language_registry,
 107            segments: Vec::with_capacity(segments.len()),
 108        };
 109        for segment in segments {
 110            this.push_segment(segment, cx);
 111        }
 112        this
 113    }
 114
 115    fn append_thinking(&mut self, text: &String, cx: &mut App) {
 116        if let Some(RenderedMessageSegment::Thinking {
 117            content,
 118            scroll_handle,
 119        }) = self.segments.last_mut()
 120        {
 121            content.update(cx, |markdown, cx| {
 122                markdown.append(text, cx);
 123            });
 124            scroll_handle.scroll_to_bottom();
 125        } else {
 126            self.segments.push(RenderedMessageSegment::Thinking {
 127                content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 128                scroll_handle: ScrollHandle::default(),
 129            });
 130        }
 131    }
 132
 133    fn append_text(&mut self, text: &String, cx: &mut App) {
 134        if let Some(RenderedMessageSegment::Text(markdown)) = self.segments.last_mut() {
 135            markdown.update(cx, |markdown, cx| markdown.append(text, cx));
 136        } else {
 137            self.segments
 138                .push(RenderedMessageSegment::Text(parse_markdown(
 139                    SharedString::from(text),
 140                    self.language_registry.clone(),
 141                    cx,
 142                )));
 143        }
 144    }
 145
 146    fn push_segment(&mut self, segment: &MessageSegment, cx: &mut App) {
 147        match segment {
 148            MessageSegment::Thinking { text, .. } => {
 149                self.segments.push(RenderedMessageSegment::Thinking {
 150                    content: parse_markdown(text.into(), self.language_registry.clone(), cx),
 151                    scroll_handle: ScrollHandle::default(),
 152                })
 153            }
 154            MessageSegment::Text(text) => {
 155                self.segments
 156                    .push(RenderedMessageSegment::Text(parse_markdown(
 157                        text.into(),
 158                        self.language_registry.clone(),
 159                        cx,
 160                    )))
 161            }
 162            MessageSegment::RedactedThinking(_) => {}
 163        };
 164    }
 165}
 166
 167enum RenderedMessageSegment {
 168    Thinking {
 169        content: Entity<Markdown>,
 170        scroll_handle: ScrollHandle,
 171    },
 172    Text(Entity<Markdown>),
 173}
 174
 175fn parse_markdown(
 176    text: SharedString,
 177    language_registry: Arc<LanguageRegistry>,
 178    cx: &mut App,
 179) -> Entity<Markdown> {
 180    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 181}
 182
 183pub(crate) fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
 184    let theme_settings = ThemeSettings::get_global(cx);
 185    let colors = cx.theme().colors();
 186    let ui_font_size = TextSize::Default.rems(cx);
 187    let buffer_font_size = TextSize::Small.rems(cx);
 188    let mut text_style = window.text_style();
 189    let line_height = buffer_font_size * 1.75;
 190
 191    text_style.refine(&TextStyleRefinement {
 192        font_family: Some(theme_settings.ui_font.family.clone()),
 193        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 194        font_features: Some(theme_settings.ui_font.features.clone()),
 195        font_size: Some(ui_font_size.into()),
 196        line_height: Some(line_height.into()),
 197        color: Some(cx.theme().colors().text),
 198        ..Default::default()
 199    });
 200
 201    MarkdownStyle {
 202        base_text_style: text_style.clone(),
 203        syntax: cx.theme().syntax().clone(),
 204        selection_background_color: cx.theme().colors().element_selection_background,
 205        code_block_overflow_x_scroll: true,
 206        table_overflow_x_scroll: true,
 207        heading_level_styles: Some(HeadingLevelStyles {
 208            h1: Some(TextStyleRefinement {
 209                font_size: Some(rems(1.15).into()),
 210                ..Default::default()
 211            }),
 212            h2: Some(TextStyleRefinement {
 213                font_size: Some(rems(1.1).into()),
 214                ..Default::default()
 215            }),
 216            h3: Some(TextStyleRefinement {
 217                font_size: Some(rems(1.05).into()),
 218                ..Default::default()
 219            }),
 220            h4: Some(TextStyleRefinement {
 221                font_size: Some(rems(1.).into()),
 222                ..Default::default()
 223            }),
 224            h5: Some(TextStyleRefinement {
 225                font_size: Some(rems(0.95).into()),
 226                ..Default::default()
 227            }),
 228            h6: Some(TextStyleRefinement {
 229                font_size: Some(rems(0.875).into()),
 230                ..Default::default()
 231            }),
 232        }),
 233        code_block: StyleRefinement {
 234            padding: EdgesRefinement {
 235                top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 236                left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 237                right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 238                bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
 239            },
 240            background: Some(colors.editor_background.into()),
 241            text: Some(TextStyleRefinement {
 242                font_family: Some(theme_settings.buffer_font.family.clone()),
 243                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 244                font_features: Some(theme_settings.buffer_font.features.clone()),
 245                font_size: Some(buffer_font_size.into()),
 246                ..Default::default()
 247            }),
 248            ..Default::default()
 249        },
 250        inline_code: TextStyleRefinement {
 251            font_family: Some(theme_settings.buffer_font.family.clone()),
 252            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 253            font_features: Some(theme_settings.buffer_font.features.clone()),
 254            font_size: Some(buffer_font_size.into()),
 255            background_color: Some(colors.editor_foreground.opacity(0.08)),
 256            ..Default::default()
 257        },
 258        link: TextStyleRefinement {
 259            background_color: Some(colors.editor_foreground.opacity(0.025)),
 260            underline: Some(UnderlineStyle {
 261                color: Some(colors.text_accent.opacity(0.5)),
 262                thickness: px(1.),
 263                ..Default::default()
 264            }),
 265            ..Default::default()
 266        },
 267        link_callback: Some(Rc::new(move |url, cx| {
 268            if MentionLink::is_valid(url) {
 269                let colors = cx.theme().colors();
 270                Some(TextStyleRefinement {
 271                    background_color: Some(colors.element_background),
 272                    ..Default::default()
 273                })
 274            } else {
 275                None
 276            }
 277        })),
 278        ..Default::default()
 279    }
 280}
 281
 282fn tool_use_markdown_style(window: &Window, cx: &mut App) -> MarkdownStyle {
 283    let theme_settings = ThemeSettings::get_global(cx);
 284    let colors = cx.theme().colors();
 285    let ui_font_size = TextSize::Default.rems(cx);
 286    let buffer_font_size = TextSize::Small.rems(cx);
 287    let mut text_style = window.text_style();
 288
 289    text_style.refine(&TextStyleRefinement {
 290        font_family: Some(theme_settings.ui_font.family.clone()),
 291        font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
 292        font_features: Some(theme_settings.ui_font.features.clone()),
 293        font_size: Some(ui_font_size.into()),
 294        color: Some(cx.theme().colors().text),
 295        ..Default::default()
 296    });
 297
 298    MarkdownStyle {
 299        base_text_style: text_style,
 300        syntax: cx.theme().syntax().clone(),
 301        selection_background_color: cx.theme().colors().element_selection_background,
 302        code_block_overflow_x_scroll: false,
 303        code_block: StyleRefinement {
 304            margin: EdgesRefinement::default(),
 305            padding: EdgesRefinement::default(),
 306            background: Some(colors.editor_background.into()),
 307            border_color: None,
 308            border_widths: EdgesRefinement::default(),
 309            text: Some(TextStyleRefinement {
 310                font_family: Some(theme_settings.buffer_font.family.clone()),
 311                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 312                font_features: Some(theme_settings.buffer_font.features.clone()),
 313                font_size: Some(buffer_font_size.into()),
 314                ..Default::default()
 315            }),
 316            ..Default::default()
 317        },
 318        inline_code: TextStyleRefinement {
 319            font_family: Some(theme_settings.buffer_font.family.clone()),
 320            font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
 321            font_features: Some(theme_settings.buffer_font.features.clone()),
 322            font_size: Some(TextSize::XSmall.rems(cx).into()),
 323            ..Default::default()
 324        },
 325        heading: StyleRefinement {
 326            text: Some(TextStyleRefinement {
 327                font_size: Some(ui_font_size.into()),
 328                ..Default::default()
 329            }),
 330            ..Default::default()
 331        },
 332        ..Default::default()
 333    }
 334}
 335
 336fn render_markdown_code_block(
 337    message_id: MessageId,
 338    ix: usize,
 339    kind: &CodeBlockKind,
 340    parsed_markdown: &ParsedMarkdown,
 341    metadata: CodeBlockMetadata,
 342    active_thread: Entity<ActiveThread>,
 343    workspace: WeakEntity<Workspace>,
 344    _window: &Window,
 345    cx: &App,
 346) -> Div {
 347    let label_size = rems(0.8125);
 348
 349    let label = match kind {
 350        CodeBlockKind::Indented => None,
 351        CodeBlockKind::Fenced => Some(
 352            h_flex()
 353                .px_1()
 354                .gap_1()
 355                .child(
 356                    Icon::new(IconName::Code)
 357                        .color(Color::Muted)
 358                        .size(IconSize::XSmall),
 359                )
 360                .child(div().text_size(label_size).child("Plain Text"))
 361                .into_any_element(),
 362        ),
 363        CodeBlockKind::FencedLang(raw_language_name) => Some(render_code_language(
 364            parsed_markdown.languages_by_name.get(raw_language_name),
 365            raw_language_name.clone(),
 366            cx,
 367        )),
 368        CodeBlockKind::FencedSrc(path_range) => path_range.path.file_name().map(|file_name| {
 369            // We tell the model to use /dev/null for the path instead of using ```language
 370            // because otherwise it consistently fails to use code citations.
 371            if path_range.path.starts_with("/dev/null") {
 372                let ext = path_range
 373                    .path
 374                    .extension()
 375                    .and_then(OsStr::to_str)
 376                    .map(|str| SharedString::new(str.to_string()))
 377                    .unwrap_or_default();
 378
 379                render_code_language(
 380                    parsed_markdown
 381                        .languages_by_path
 382                        .get(&path_range.path)
 383                        .or_else(|| parsed_markdown.languages_by_name.get(&ext)),
 384                    ext,
 385                    cx,
 386                )
 387            } else {
 388                let content = if let Some(parent) = path_range.path.parent() {
 389                    let file_name = file_name.to_string_lossy().to_string();
 390                    let path = parent.to_string_lossy().to_string();
 391                    let path_and_file = format!("{}/{}", path, file_name);
 392
 393                    h_flex()
 394                        .id(("code-block-header-label", ix))
 395                        .ml_1()
 396                        .gap_1()
 397                        .child(div().text_size(label_size).child(file_name))
 398                        .child(Label::new(path).color(Color::Muted).size(LabelSize::Small))
 399                        .tooltip(move |window, cx| {
 400                            Tooltip::with_meta(
 401                                "Jump to File",
 402                                None,
 403                                path_and_file.clone(),
 404                                window,
 405                                cx,
 406                            )
 407                        })
 408                        .into_any_element()
 409                } else {
 410                    div()
 411                        .ml_1()
 412                        .text_size(label_size)
 413                        .child(path_range.path.to_string_lossy().to_string())
 414                        .into_any_element()
 415                };
 416
 417                h_flex()
 418                    .id(("code-block-header-button", ix))
 419                    .w_full()
 420                    .max_w_full()
 421                    .px_1()
 422                    .gap_0p5()
 423                    .cursor_pointer()
 424                    .rounded_sm()
 425                    .hover(|item| item.bg(cx.theme().colors().element_hover.opacity(0.5)))
 426                    .child(
 427                        h_flex()
 428                            .gap_0p5()
 429                            .children(
 430                                file_icons::FileIcons::get_icon(&path_range.path, cx)
 431                                    .map(Icon::from_path)
 432                                    .map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)),
 433                            )
 434                            .child(content)
 435                            .child(
 436                                Icon::new(IconName::ArrowUpRight)
 437                                    .size(IconSize::Small)
 438                                    .color(Color::Ignored),
 439                            ),
 440                    )
 441                    .on_click({
 442                        let path_range = path_range.clone();
 443                        move |_, window, cx| {
 444                            workspace
 445                                .update(cx, |workspace, cx| {
 446                                    open_path(&path_range, window, workspace, cx)
 447                                })
 448                                .ok();
 449                        }
 450                    })
 451                    .into_any_element()
 452            }
 453        }),
 454    };
 455
 456    let codeblock_was_copied = active_thread
 457        .read(cx)
 458        .copied_code_block_ids
 459        .contains(&(message_id, ix));
 460
 461    let is_expanded = active_thread.read(cx).is_codeblock_expanded(message_id, ix);
 462
 463    let codeblock_header_bg = cx
 464        .theme()
 465        .colors()
 466        .element_background
 467        .blend(cx.theme().colors().editor_foreground.opacity(0.025));
 468
 469    let control_buttons = h_flex()
 470        .visible_on_hover(CODEBLOCK_CONTAINER_GROUP)
 471        .absolute()
 472        .top_0()
 473        .right_0()
 474        .h_full()
 475        .bg(codeblock_header_bg)
 476        .rounded_tr_md()
 477        .px_1()
 478        .gap_1()
 479        .child(
 480            IconButton::new(
 481                ("copy-markdown-code", ix),
 482                if codeblock_was_copied {
 483                    IconName::Check
 484                } else {
 485                    IconName::Copy
 486                },
 487            )
 488            .icon_color(Color::Muted)
 489            .shape(ui::IconButtonShape::Square)
 490            .tooltip(Tooltip::text("Copy Code"))
 491            .on_click({
 492                let active_thread = active_thread.clone();
 493                let parsed_markdown = parsed_markdown.clone();
 494                let code_block_range = metadata.content_range;
 495                move |_event, _window, cx| {
 496                    active_thread.update(cx, |this, cx| {
 497                        this.copied_code_block_ids.insert((message_id, ix));
 498
 499                        let code = parsed_markdown.source()[code_block_range.clone()].to_string();
 500                        cx.write_to_clipboard(ClipboardItem::new_string(code));
 501
 502                        cx.spawn(async move |this, cx| {
 503                            cx.background_executor().timer(Duration::from_secs(2)).await;
 504
 505                            cx.update(|cx| {
 506                                this.update(cx, |this, cx| {
 507                                    this.copied_code_block_ids.remove(&(message_id, ix));
 508                                    cx.notify();
 509                                })
 510                            })
 511                            .ok();
 512                        })
 513                        .detach();
 514                    });
 515                }
 516            }),
 517        )
 518        .child(
 519            IconButton::new(
 520                ("expand-collapse-code", ix),
 521                if is_expanded {
 522                    IconName::ChevronUp
 523                } else {
 524                    IconName::ChevronDown
 525                },
 526            )
 527            .icon_color(Color::Muted)
 528            .shape(ui::IconButtonShape::Square)
 529            .tooltip(Tooltip::text(if is_expanded {
 530                "Collapse Code"
 531            } else {
 532                "Expand Code"
 533            }))
 534            .on_click({
 535                move |_event, _window, cx| {
 536                    active_thread.update(cx, |this, cx| {
 537                        this.toggle_codeblock_expanded(message_id, ix);
 538                        cx.notify();
 539                    });
 540                }
 541            }),
 542        );
 543
 544    let codeblock_header = h_flex()
 545        .relative()
 546        .p_1()
 547        .gap_1()
 548        .justify_between()
 549        .bg(codeblock_header_bg)
 550        .map(|this| {
 551            if !is_expanded {
 552                this.rounded_md()
 553            } else {
 554                this.rounded_t_md()
 555                    .border_b_1()
 556                    .border_color(cx.theme().colors().border.opacity(0.6))
 557            }
 558        })
 559        .children(label)
 560        .child(control_buttons);
 561
 562    v_flex()
 563        .group(CODEBLOCK_CONTAINER_GROUP)
 564        .my_2()
 565        .overflow_hidden()
 566        .rounded_md()
 567        .border_1()
 568        .border_color(cx.theme().colors().border.opacity(0.6))
 569        .bg(cx.theme().colors().editor_background)
 570        .child(codeblock_header)
 571        .when(!is_expanded, |this| this.h(rems_from_px(31.)))
 572}
 573
 574fn open_path(
 575    path_range: &PathWithRange,
 576    window: &mut Window,
 577    workspace: &mut Workspace,
 578    cx: &mut Context<'_, Workspace>,
 579) {
 580    let Some(project_path) = workspace
 581        .project()
 582        .read(cx)
 583        .find_project_path(&path_range.path, cx)
 584    else {
 585        return; // TODO instead of just bailing out, open that path in a buffer.
 586    };
 587
 588    let Some(target) = path_range.range.as_ref().map(|range| {
 589        Point::new(
 590            // Line number is 1-based
 591            range.start.line.saturating_sub(1),
 592            range.start.col.unwrap_or(0),
 593        )
 594    }) else {
 595        return;
 596    };
 597    let open_task = workspace.open_path(project_path, None, true, window, cx);
 598    window
 599        .spawn(cx, async move |cx| {
 600            let item = open_task.await?;
 601            if let Some(active_editor) = item.downcast::<Editor>() {
 602                active_editor
 603                    .update_in(cx, |editor, window, cx| {
 604                        editor.go_to_singleton_buffer_point(target, window, cx);
 605                    })
 606                    .ok();
 607            }
 608            anyhow::Ok(())
 609        })
 610        .detach_and_log_err(cx);
 611}
 612
 613fn render_code_language(
 614    language: Option<&Arc<Language>>,
 615    name_fallback: SharedString,
 616    cx: &App,
 617) -> AnyElement {
 618    let icon_path = language.and_then(|language| {
 619        language
 620            .config()
 621            .matcher
 622            .path_suffixes
 623            .iter()
 624            .find_map(|extension| file_icons::FileIcons::get_icon(Path::new(extension), cx))
 625            .map(Icon::from_path)
 626    });
 627
 628    let language_label = language
 629        .map(|language| language.name().into())
 630        .unwrap_or(name_fallback);
 631
 632    let label_size = rems(0.8125);
 633
 634    h_flex()
 635        .px_1()
 636        .gap_1p5()
 637        .children(icon_path.map(|icon| icon.color(Color::Muted).size(IconSize::XSmall)))
 638        .child(div().text_size(label_size).child(language_label))
 639        .into_any_element()
 640}
 641
 642fn open_markdown_link(
 643    text: SharedString,
 644    workspace: WeakEntity<Workspace>,
 645    window: &mut Window,
 646    cx: &mut App,
 647) {
 648    let Some(workspace) = workspace.upgrade() else {
 649        cx.open_url(&text);
 650        return;
 651    };
 652
 653    match MentionLink::try_parse(&text, &workspace, cx) {
 654        Some(MentionLink::File(path, entry)) => workspace.update(cx, |workspace, cx| {
 655            if entry.is_dir() {
 656                workspace.project().update(cx, |_, cx| {
 657                    cx.emit(project::Event::RevealInProjectPanel(entry.id));
 658                })
 659            } else {
 660                workspace
 661                    .open_path(path, None, true, window, cx)
 662                    .detach_and_log_err(cx);
 663            }
 664        }),
 665        Some(MentionLink::Symbol(path, symbol_name)) => {
 666            let open_task = workspace.update(cx, |workspace, cx| {
 667                workspace.open_path(path, None, true, window, cx)
 668            });
 669            window
 670                .spawn(cx, async move |cx| {
 671                    let active_editor = open_task
 672                        .await?
 673                        .downcast::<Editor>()
 674                        .context("Item is not an editor")?;
 675                    active_editor.update_in(cx, |editor, window, cx| {
 676                        let symbol_range = editor
 677                            .buffer()
 678                            .read(cx)
 679                            .snapshot(cx)
 680                            .outline(None)
 681                            .and_then(|outline| {
 682                                outline
 683                                    .find_most_similar(&symbol_name)
 684                                    .map(|(_, item)| item.range.clone())
 685                            })
 686                            .context("Could not find matching symbol")?;
 687
 688                        editor.change_selections(
 689                            SelectionEffects::scroll(Autoscroll::center()),
 690                            window,
 691                            cx,
 692                            |s| s.select_anchor_ranges([symbol_range.start..symbol_range.start]),
 693                        );
 694                        anyhow::Ok(())
 695                    })
 696                })
 697                .detach_and_log_err(cx);
 698        }
 699        Some(MentionLink::Selection(path, line_range)) => {
 700            let open_task = workspace.update(cx, |workspace, cx| {
 701                workspace.open_path(path, None, true, window, cx)
 702            });
 703            window
 704                .spawn(cx, async move |cx| {
 705                    let active_editor = open_task
 706                        .await?
 707                        .downcast::<Editor>()
 708                        .context("Item is not an editor")?;
 709                    active_editor.update_in(cx, |editor, window, cx| {
 710                        editor.change_selections(
 711                            SelectionEffects::scroll(Autoscroll::center()),
 712                            window,
 713                            cx,
 714                            |s| {
 715                                s.select_ranges([Point::new(line_range.start as u32, 0)
 716                                    ..Point::new(line_range.start as u32, 0)])
 717                            },
 718                        );
 719                        anyhow::Ok(())
 720                    })
 721                })
 722                .detach_and_log_err(cx);
 723        }
 724        Some(MentionLink::Thread(thread_id)) => workspace.update(cx, |workspace, cx| {
 725            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 726                panel.update(cx, |panel, cx| {
 727                    panel
 728                        .open_thread_by_id(&thread_id, window, cx)
 729                        .detach_and_log_err(cx)
 730                });
 731            }
 732        }),
 733        Some(MentionLink::TextThread(path)) => workspace.update(cx, |workspace, cx| {
 734            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 735                panel.update(cx, |panel, cx| {
 736                    panel
 737                        .open_saved_prompt_editor(path, window, cx)
 738                        .detach_and_log_err(cx);
 739                });
 740            }
 741        }),
 742        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
 743        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
 744            Box::new(OpenRulesLibrary {
 745                prompt_to_select: Some(prompt_id.0),
 746            }),
 747            cx,
 748        ),
 749        None => cx.open_url(&text),
 750    }
 751}
 752
 753struct EditingMessageState {
 754    editor: Entity<Editor>,
 755    context_strip: Entity<ContextStrip>,
 756    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
 757    last_estimated_token_count: Option<u64>,
 758    _subscriptions: [Subscription; 2],
 759    _update_token_count_task: Option<Task<()>>,
 760}
 761
 762impl ActiveThread {
 763    pub fn new(
 764        thread: Entity<Thread>,
 765        thread_store: Entity<ThreadStore>,
 766        text_thread_store: Entity<TextThreadStore>,
 767        context_store: Entity<ContextStore>,
 768        language_registry: Arc<LanguageRegistry>,
 769        workspace: WeakEntity<Workspace>,
 770        window: &mut Window,
 771        cx: &mut Context<Self>,
 772    ) -> Self {
 773        let subscriptions = vec![
 774            cx.observe(&thread, |_, _, cx| cx.notify()),
 775            cx.subscribe_in(&thread, window, Self::handle_thread_event),
 776            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
 777            cx.observe_global::<SettingsStore>(|_, cx| cx.notify()),
 778        ];
 779
 780        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.));
 781
 782        let workspace_subscription = if let Some(workspace) = workspace.upgrade() {
 783            Some(cx.observe_release(&workspace, |this, _, cx| {
 784                this.dismiss_notifications(cx);
 785            }))
 786        } else {
 787            None
 788        };
 789
 790        let mut this = Self {
 791            language_registry,
 792            thread_store,
 793            text_thread_store,
 794            context_store,
 795            thread: thread.clone(),
 796            workspace,
 797            save_thread_task: None,
 798            messages: Vec::new(),
 799            rendered_messages_by_id: HashMap::default(),
 800            rendered_tool_uses: HashMap::default(),
 801            expanded_tool_uses: HashMap::default(),
 802            expanded_thinking_segments: HashMap::default(),
 803            expanded_code_blocks: HashMap::default(),
 804            list_state: list_state.clone(),
 805            scrollbar_state: ScrollbarState::new(list_state).parent_entity(&cx.entity()),
 806            editing_message: None,
 807            last_error: None,
 808            copied_code_block_ids: HashSet::default(),
 809            notifications: Vec::new(),
 810            _subscriptions: subscriptions,
 811            notification_subscriptions: HashMap::default(),
 812            open_feedback_editors: HashMap::default(),
 813            _load_edited_message_context_task: None,
 814        };
 815
 816        for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
 817            let rendered_message = RenderedMessage::from_segments(
 818                &message.segments,
 819                this.language_registry.clone(),
 820                cx,
 821            );
 822            this.push_rendered_message(message.id, rendered_message);
 823
 824            for tool_use in thread.read(cx).tool_uses_for_message(message.id, cx) {
 825                this.render_tool_use_markdown(
 826                    tool_use.id.clone(),
 827                    tool_use.ui_text.clone(),
 828                    &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
 829                    tool_use.status.text(),
 830                    cx,
 831                );
 832            }
 833        }
 834
 835        if let Some(subscription) = workspace_subscription {
 836            this._subscriptions.push(subscription);
 837        }
 838
 839        this
 840    }
 841
 842    pub fn thread(&self) -> &Entity<Thread> {
 843        &self.thread
 844    }
 845
 846    pub fn is_empty(&self) -> bool {
 847        self.messages.is_empty()
 848    }
 849
 850    pub fn summary<'a>(&'a self, cx: &'a App) -> &'a ThreadSummary {
 851        self.thread.read(cx).summary()
 852    }
 853
 854    pub fn regenerate_summary(&self, cx: &mut App) {
 855        self.thread.update(cx, |thread, cx| thread.summarize(cx))
 856    }
 857
 858    pub fn cancel_last_completion(&mut self, window: &mut Window, cx: &mut App) -> bool {
 859        self.last_error.take();
 860        self.thread.update(cx, |thread, cx| {
 861            thread.cancel_last_completion(Some(window.window_handle()), cx)
 862        })
 863    }
 864
 865    pub fn last_error(&self) -> Option<ThreadError> {
 866        self.last_error.clone()
 867    }
 868
 869    pub fn clear_last_error(&mut self) {
 870        self.last_error.take();
 871    }
 872
 873    /// Returns the editing message id and the estimated token count in the content
 874    pub fn editing_message_id(&self) -> Option<(MessageId, u64)> {
 875        self.editing_message
 876            .as_ref()
 877            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
 878    }
 879
 880    pub fn context_store(&self) -> &Entity<ContextStore> {
 881        &self.context_store
 882    }
 883
 884    pub fn thread_store(&self) -> &Entity<ThreadStore> {
 885        &self.thread_store
 886    }
 887
 888    pub fn text_thread_store(&self) -> &Entity<TextThreadStore> {
 889        &self.text_thread_store
 890    }
 891
 892    fn push_rendered_message(&mut self, id: MessageId, rendered_message: RenderedMessage) {
 893        let old_len = self.messages.len();
 894        self.messages.push(id);
 895        self.list_state.splice(old_len..old_len, 1);
 896        self.rendered_messages_by_id.insert(id, rendered_message);
 897    }
 898
 899    fn deleted_message(&mut self, id: &MessageId) {
 900        let Some(index) = self.messages.iter().position(|message_id| message_id == id) else {
 901            return;
 902        };
 903        self.messages.remove(index);
 904        self.list_state.splice(index..index + 1, 0);
 905        self.rendered_messages_by_id.remove(id);
 906    }
 907
 908    fn render_tool_use_markdown(
 909        &mut self,
 910        tool_use_id: LanguageModelToolUseId,
 911        tool_label: impl Into<SharedString>,
 912        tool_input: &str,
 913        tool_output: SharedString,
 914        cx: &mut Context<Self>,
 915    ) {
 916        let rendered = self
 917            .rendered_tool_uses
 918            .entry(tool_use_id)
 919            .or_insert_with(|| RenderedToolUse {
 920                label: cx.new(|cx| {
 921                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 922                }),
 923                input: cx.new(|cx| {
 924                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 925                }),
 926                output: cx.new(|cx| {
 927                    Markdown::new("".into(), Some(self.language_registry.clone()), None, cx)
 928                }),
 929            });
 930
 931        rendered.label.update(cx, |this, cx| {
 932            this.replace(tool_label, cx);
 933        });
 934        rendered.input.update(cx, |this, cx| {
 935            this.replace(
 936                MarkdownCodeBlock {
 937                    tag: "json",
 938                    text: tool_input,
 939                }
 940                .to_string(),
 941                cx,
 942            );
 943        });
 944        rendered.output.update(cx, |this, cx| {
 945            this.replace(tool_output, cx);
 946        });
 947    }
 948
 949    fn handle_thread_event(
 950        &mut self,
 951        _thread: &Entity<Thread>,
 952        event: &ThreadEvent,
 953        window: &mut Window,
 954        cx: &mut Context<Self>,
 955    ) {
 956        match event {
 957            ThreadEvent::CancelEditing => {
 958                if self.editing_message.is_some() {
 959                    self.cancel_editing_message(&menu::Cancel, window, cx);
 960                }
 961            }
 962            ThreadEvent::ShowError(error) => {
 963                self.last_error = Some(error.clone());
 964            }
 965            ThreadEvent::NewRequest => {
 966                cx.notify();
 967            }
 968            ThreadEvent::CompletionCanceled => {
 969                self.thread.update(cx, |thread, cx| {
 970                    thread.project().update(cx, |project, cx| {
 971                        project.set_agent_location(None, cx);
 972                    })
 973                });
 974                self.workspace
 975                    .update(cx, |workspace, cx| {
 976                        if workspace.is_being_followed(CollaboratorId::Agent) {
 977                            workspace.unfollow(CollaboratorId::Agent, window, cx);
 978                        }
 979                    })
 980                    .ok();
 981                cx.notify();
 982            }
 983            ThreadEvent::StreamedCompletion
 984            | ThreadEvent::SummaryGenerated
 985            | ThreadEvent::SummaryChanged => {
 986                self.save_thread(cx);
 987            }
 988            ThreadEvent::Stopped(reason) => {
 989                match reason {
 990                    Ok(StopReason::EndTurn | StopReason::MaxTokens) => {
 991                        let used_tools = self.thread.read(cx).used_tools_since_last_user_message();
 992                        self.notify_with_sound(
 993                            if used_tools {
 994                                "Finished running tools"
 995                            } else {
 996                                "New message"
 997                            },
 998                            IconName::ZedAssistant,
 999                            window,
1000                            cx,
1001                        );
1002                    }
1003                    Ok(StopReason::ToolUse) => {
1004                        // Don't notify for intermediate tool use
1005                    }
1006                    Ok(StopReason::Refusal) => {
1007                        self.notify_with_sound(
1008                            "Language model refused to respond",
1009                            IconName::Warning,
1010                            window,
1011                            cx,
1012                        );
1013                    }
1014                    Err(error) => {
1015                        self.notify_with_sound(
1016                            "Agent stopped due to an error",
1017                            IconName::Warning,
1018                            window,
1019                            cx,
1020                        );
1021
1022                        let error_message = error
1023                            .chain()
1024                            .map(|err| err.to_string())
1025                            .collect::<Vec<_>>()
1026                            .join("\n");
1027                        self.last_error = Some(ThreadError::Message {
1028                            header: "Error".into(),
1029                            message: error_message.into(),
1030                        });
1031                    }
1032                }
1033            }
1034            ThreadEvent::ToolConfirmationNeeded => {
1035                self.notify_with_sound("Waiting for tool confirmation", IconName::Info, window, cx);
1036            }
1037            ThreadEvent::ToolUseLimitReached => {
1038                self.notify_with_sound(
1039                    "Consecutive tool use limit reached.",
1040                    IconName::Warning,
1041                    window,
1042                    cx,
1043                );
1044            }
1045            ThreadEvent::StreamedAssistantText(message_id, text) => {
1046                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(message_id) {
1047                    rendered_message.append_text(text, cx);
1048                }
1049            }
1050            ThreadEvent::StreamedAssistantThinking(message_id, text) => {
1051                if let Some(rendered_message) = self.rendered_messages_by_id.get_mut(message_id) {
1052                    rendered_message.append_thinking(text, cx);
1053                }
1054            }
1055            ThreadEvent::MessageAdded(message_id) => {
1056                self.clear_last_error();
1057                if let Some(rendered_message) = self.thread.update(cx, |thread, cx| {
1058                    thread.message(*message_id).map(|message| {
1059                        RenderedMessage::from_segments(
1060                            &message.segments,
1061                            self.language_registry.clone(),
1062                            cx,
1063                        )
1064                    })
1065                }) {
1066                    self.push_rendered_message(*message_id, rendered_message);
1067                }
1068
1069                self.save_thread(cx);
1070                cx.notify();
1071            }
1072            ThreadEvent::MessageEdited(message_id) => {
1073                self.clear_last_error();
1074                if let Some(index) = self.messages.iter().position(|id| id == message_id)
1075                    && let Some(rendered_message) = self.thread.update(cx, |thread, cx| {
1076                        thread.message(*message_id).map(|message| {
1077                            let mut rendered_message = RenderedMessage {
1078                                language_registry: self.language_registry.clone(),
1079                                segments: Vec::with_capacity(message.segments.len()),
1080                            };
1081                            for segment in &message.segments {
1082                                rendered_message.push_segment(segment, cx);
1083                            }
1084                            rendered_message
1085                        })
1086                    })
1087                {
1088                    self.list_state.splice(index..index + 1, 1);
1089                    self.rendered_messages_by_id
1090                        .insert(*message_id, rendered_message);
1091                    self.scroll_to_bottom(cx);
1092                    self.save_thread(cx);
1093                    cx.notify();
1094                }
1095            }
1096            ThreadEvent::MessageDeleted(message_id) => {
1097                self.deleted_message(message_id);
1098                self.save_thread(cx);
1099                cx.notify();
1100            }
1101            ThreadEvent::UsePendingTools { tool_uses } => {
1102                for tool_use in tool_uses {
1103                    self.render_tool_use_markdown(
1104                        tool_use.id.clone(),
1105                        tool_use.ui_text.clone(),
1106                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1107                        "".into(),
1108                        cx,
1109                    );
1110                }
1111            }
1112            ThreadEvent::StreamedToolUse {
1113                tool_use_id,
1114                ui_text,
1115                input,
1116            } => {
1117                self.render_tool_use_markdown(
1118                    tool_use_id.clone(),
1119                    ui_text.clone(),
1120                    &serde_json::to_string_pretty(&input).unwrap_or_default(),
1121                    "".into(),
1122                    cx,
1123                );
1124            }
1125            ThreadEvent::ToolFinished {
1126                pending_tool_use, ..
1127            } => {
1128                if let Some(tool_use) = pending_tool_use {
1129                    self.render_tool_use_markdown(
1130                        tool_use.id.clone(),
1131                        tool_use.ui_text.clone(),
1132                        &serde_json::to_string_pretty(&tool_use.input).unwrap_or_default(),
1133                        self.thread
1134                            .read(cx)
1135                            .output_for_tool(&tool_use.id)
1136                            .map(|output| output.clone().into())
1137                            .unwrap_or("".into()),
1138                        cx,
1139                    );
1140                }
1141            }
1142            ThreadEvent::CheckpointChanged => cx.notify(),
1143            ThreadEvent::ReceivedTextChunk => {}
1144            ThreadEvent::InvalidToolInput {
1145                tool_use_id,
1146                ui_text,
1147                invalid_input_json,
1148            } => {
1149                self.render_tool_use_markdown(
1150                    tool_use_id.clone(),
1151                    ui_text,
1152                    invalid_input_json,
1153                    self.thread
1154                        .read(cx)
1155                        .output_for_tool(tool_use_id)
1156                        .map(|output| output.clone().into())
1157                        .unwrap_or("".into()),
1158                    cx,
1159                );
1160            }
1161            ThreadEvent::MissingToolUse {
1162                tool_use_id,
1163                ui_text,
1164            } => {
1165                self.render_tool_use_markdown(
1166                    tool_use_id.clone(),
1167                    ui_text,
1168                    "",
1169                    self.thread
1170                        .read(cx)
1171                        .output_for_tool(tool_use_id)
1172                        .map(|output| output.clone().into())
1173                        .unwrap_or("".into()),
1174                    cx,
1175                );
1176            }
1177            ThreadEvent::ProfileChanged => {
1178                self.save_thread(cx);
1179                cx.notify();
1180            }
1181        }
1182    }
1183
1184    fn handle_rules_loading_error(
1185        &mut self,
1186        _thread_store: Entity<ThreadStore>,
1187        error: &RulesLoadingError,
1188        cx: &mut Context<Self>,
1189    ) {
1190        self.last_error = Some(ThreadError::Message {
1191            header: "Error loading rules file".into(),
1192            message: error.message.clone(),
1193        });
1194        cx.notify();
1195    }
1196
1197    fn play_notification_sound(&self, window: &Window, cx: &mut App) {
1198        let settings = AgentSettings::get_global(cx);
1199        if settings.play_sound_when_agent_done && !window.is_window_active() {
1200            Audio::play_sound(Sound::AgentDone, cx);
1201        }
1202    }
1203
1204    fn show_notification(
1205        &mut self,
1206        caption: impl Into<SharedString>,
1207        icon: IconName,
1208        window: &mut Window,
1209        cx: &mut Context<ActiveThread>,
1210    ) {
1211        if window.is_window_active() || !self.notifications.is_empty() {
1212            return;
1213        }
1214
1215        let title = self.thread.read(cx).summary().unwrap_or("Agent Panel");
1216
1217        match AgentSettings::get_global(cx).notify_when_agent_waiting {
1218            NotifyWhenAgentWaiting::PrimaryScreen => {
1219                if let Some(primary) = cx.primary_display() {
1220                    self.pop_up(icon, caption.into(), title, window, primary, cx);
1221                }
1222            }
1223            NotifyWhenAgentWaiting::AllScreens => {
1224                let caption = caption.into();
1225                for screen in cx.displays() {
1226                    self.pop_up(icon, caption.clone(), title.clone(), window, screen, cx);
1227                }
1228            }
1229            NotifyWhenAgentWaiting::Never => {
1230                // Don't show anything
1231            }
1232        }
1233    }
1234
1235    fn notify_with_sound(
1236        &mut self,
1237        caption: impl Into<SharedString>,
1238        icon: IconName,
1239        window: &mut Window,
1240        cx: &mut Context<ActiveThread>,
1241    ) {
1242        self.play_notification_sound(window, cx);
1243        self.show_notification(caption, icon, window, cx);
1244    }
1245
1246    fn pop_up(
1247        &mut self,
1248        icon: IconName,
1249        caption: SharedString,
1250        title: SharedString,
1251        window: &mut Window,
1252        screen: Rc<dyn PlatformDisplay>,
1253        cx: &mut Context<'_, ActiveThread>,
1254    ) {
1255        let options = AgentNotification::window_options(screen, cx);
1256
1257        let project_name = self.workspace.upgrade().and_then(|workspace| {
1258            workspace
1259                .read(cx)
1260                .project()
1261                .read(cx)
1262                .visible_worktrees(cx)
1263                .next()
1264                .map(|worktree| worktree.read(cx).root_name().to_string())
1265        });
1266
1267        if let Some(screen_window) = cx
1268            .open_window(options, |_, cx| {
1269                cx.new(|_| {
1270                    AgentNotification::new(title.clone(), caption.clone(), icon, project_name)
1271                })
1272            })
1273            .log_err()
1274            && let Some(pop_up) = screen_window.entity(cx).log_err()
1275        {
1276            self.notification_subscriptions
1277                .entry(screen_window)
1278                .or_insert_with(Vec::new)
1279                .push(cx.subscribe_in(&pop_up, window, {
1280                    |this, _, event, window, cx| match event {
1281                        AgentNotificationEvent::Accepted => {
1282                            let handle = window.window_handle();
1283                            cx.activate(true);
1284
1285                            let workspace_handle = this.workspace.clone();
1286
1287                            // If there are multiple Zed windows, activate the correct one.
1288                            cx.defer(move |cx| {
1289                                handle
1290                                    .update(cx, |_view, window, _cx| {
1291                                        window.activate_window();
1292
1293                                        if let Some(workspace) = workspace_handle.upgrade() {
1294                                            workspace.update(_cx, |workspace, cx| {
1295                                                workspace.focus_panel::<AgentPanel>(window, cx);
1296                                            });
1297                                        }
1298                                    })
1299                                    .log_err();
1300                            });
1301
1302                            this.dismiss_notifications(cx);
1303                        }
1304                        AgentNotificationEvent::Dismissed => {
1305                            this.dismiss_notifications(cx);
1306                        }
1307                    }
1308                }));
1309
1310            self.notifications.push(screen_window);
1311
1312            // If the user manually refocuses the original window, dismiss the popup.
1313            self.notification_subscriptions
1314                .entry(screen_window)
1315                .or_insert_with(Vec::new)
1316                .push({
1317                    let pop_up_weak = pop_up.downgrade();
1318
1319                    cx.observe_window_activation(window, move |_, window, cx| {
1320                        if window.is_window_active()
1321                            && let Some(pop_up) = pop_up_weak.upgrade()
1322                        {
1323                            pop_up.update(cx, |_, cx| {
1324                                cx.emit(AgentNotificationEvent::Dismissed);
1325                            });
1326                        }
1327                    })
1328                });
1329        }
1330    }
1331
1332    /// Spawns a task to save the active thread.
1333    ///
1334    /// Only one task to save the thread will be in flight at a time.
1335    fn save_thread(&mut self, cx: &mut Context<Self>) {
1336        let thread = self.thread.clone();
1337        self.save_thread_task = Some(cx.spawn(async move |this, cx| {
1338            let task = this
1339                .update(cx, |this, cx| {
1340                    this.thread_store
1341                        .update(cx, |thread_store, cx| thread_store.save_thread(&thread, cx))
1342                })
1343                .ok();
1344
1345            if let Some(task) = task {
1346                task.await.log_err();
1347            }
1348        }));
1349    }
1350
1351    fn start_editing_message(
1352        &mut self,
1353        message_id: MessageId,
1354        message_text: impl Into<Arc<str>>,
1355        message_creases: &[MessageCrease],
1356        window: &mut Window,
1357        cx: &mut Context<Self>,
1358    ) {
1359        let editor = crate::message_editor::create_editor(
1360            self.workspace.clone(),
1361            self.context_store.downgrade(),
1362            self.thread_store.downgrade(),
1363            self.text_thread_store.downgrade(),
1364            EDIT_PREVIOUS_MESSAGE_MIN_LINES,
1365            None,
1366            window,
1367            cx,
1368        );
1369        editor.update(cx, |editor, cx| {
1370            editor.set_text(message_text, window, cx);
1371            insert_message_creases(editor, message_creases, &self.context_store, window, cx);
1372            editor.focus_handle(cx).focus(window);
1373            editor.move_to_end(&editor::actions::MoveToEnd, window, cx);
1374        });
1375        let buffer_edited_subscription =
1376            cx.subscribe(&editor, |this, _, event: &EditorEvent, cx| {
1377                if event == &EditorEvent::BufferEdited {
1378                    this.update_editing_message_token_count(true, cx);
1379                }
1380            });
1381
1382        let context_picker_menu_handle = PopoverMenuHandle::default();
1383        let context_strip = cx.new(|cx| {
1384            ContextStrip::new(
1385                self.context_store.clone(),
1386                self.workspace.clone(),
1387                Some(self.thread_store.downgrade()),
1388                Some(self.text_thread_store.downgrade()),
1389                context_picker_menu_handle.clone(),
1390                SuggestContextKind::File,
1391                ModelUsageContext::Thread(self.thread.clone()),
1392                window,
1393                cx,
1394            )
1395        });
1396
1397        let context_strip_subscription =
1398            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event);
1399
1400        self.editing_message = Some((
1401            message_id,
1402            EditingMessageState {
1403                editor: editor.clone(),
1404                context_strip,
1405                context_picker_menu_handle,
1406                last_estimated_token_count: None,
1407                _subscriptions: [buffer_edited_subscription, context_strip_subscription],
1408                _update_token_count_task: None,
1409            },
1410        ));
1411        self.update_editing_message_token_count(false, cx);
1412        cx.notify();
1413    }
1414
1415    fn handle_context_strip_event(
1416        &mut self,
1417        _context_strip: &Entity<ContextStrip>,
1418        event: &ContextStripEvent,
1419        window: &mut Window,
1420        cx: &mut Context<Self>,
1421    ) {
1422        if let Some((_, state)) = self.editing_message.as_ref() {
1423            match event {
1424                ContextStripEvent::PickerDismissed
1425                | ContextStripEvent::BlurredEmpty
1426                | ContextStripEvent::BlurredDown => {
1427                    let editor_focus_handle = state.editor.focus_handle(cx);
1428                    window.focus(&editor_focus_handle);
1429                }
1430                ContextStripEvent::BlurredUp => {}
1431            }
1432        }
1433    }
1434
1435    fn update_editing_message_token_count(&mut self, debounce: bool, cx: &mut Context<Self>) {
1436        let Some((message_id, state)) = self.editing_message.as_mut() else {
1437            return;
1438        };
1439
1440        cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1441        state._update_token_count_task.take();
1442
1443        let Some(configured_model) = self.thread.read(cx).configured_model() else {
1444            state.last_estimated_token_count.take();
1445            return;
1446        };
1447
1448        let editor = state.editor.clone();
1449        let thread = self.thread.clone();
1450        let message_id = *message_id;
1451
1452        state._update_token_count_task = Some(cx.spawn(async move |this, cx| {
1453            if debounce {
1454                cx.background_executor()
1455                    .timer(Duration::from_millis(200))
1456                    .await;
1457            }
1458
1459            let token_count = if let Some(task) = cx
1460                .update(|cx| {
1461                    let Some(message) = thread.read(cx).message(message_id) else {
1462                        log::error!("Message that was being edited no longer exists");
1463                        return None;
1464                    };
1465                    let message_text = editor.read(cx).text(cx);
1466
1467                    if message_text.is_empty() && message.loaded_context.is_empty() {
1468                        return None;
1469                    }
1470
1471                    let mut request_message = LanguageModelRequestMessage {
1472                        role: language_model::Role::User,
1473                        content: Vec::new(),
1474                        cache: false,
1475                    };
1476
1477                    message
1478                        .loaded_context
1479                        .add_to_request_message(&mut request_message);
1480
1481                    if !message_text.is_empty() {
1482                        request_message
1483                            .content
1484                            .push(MessageContent::Text(message_text));
1485                    }
1486
1487                    let request = language_model::LanguageModelRequest {
1488                        thread_id: None,
1489                        prompt_id: None,
1490                        intent: None,
1491                        mode: None,
1492                        messages: vec![request_message],
1493                        tools: vec![],
1494                        tool_choice: None,
1495                        stop: vec![],
1496                        temperature: AgentSettings::temperature_for_model(
1497                            &configured_model.model,
1498                            cx,
1499                        ),
1500                        thinking_allowed: true,
1501                    };
1502
1503                    Some(configured_model.model.count_tokens(request, cx))
1504                })
1505                .ok()
1506                .flatten()
1507            {
1508                task.await.log_err()
1509            } else {
1510                Some(0)
1511            };
1512
1513            if let Some(token_count) = token_count {
1514                this.update(cx, |this, cx| {
1515                    let Some((_message_id, state)) = this.editing_message.as_mut() else {
1516                        return;
1517                    };
1518
1519                    state.last_estimated_token_count = Some(token_count);
1520                    cx.emit(ActiveThreadEvent::EditingMessageTokenCountChanged);
1521                })
1522                .ok();
1523            };
1524        }));
1525    }
1526
1527    fn toggle_context_picker(
1528        &mut self,
1529        _: &crate::ToggleContextPicker,
1530        window: &mut Window,
1531        cx: &mut Context<Self>,
1532    ) {
1533        if let Some((_, state)) = self.editing_message.as_mut() {
1534            let handle = state.context_picker_menu_handle.clone();
1535            window.defer(cx, move |window, cx| {
1536                handle.toggle(window, cx);
1537            });
1538        }
1539    }
1540
1541    fn remove_all_context(
1542        &mut self,
1543        _: &crate::RemoveAllContext,
1544        _window: &mut Window,
1545        cx: &mut Context<Self>,
1546    ) {
1547        self.context_store.update(cx, |store, cx| store.clear(cx));
1548        cx.notify();
1549    }
1550
1551    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1552        if let Some((_, state)) = self.editing_message.as_mut() {
1553            if state.context_picker_menu_handle.is_deployed() {
1554                cx.propagate();
1555            } else {
1556                state.context_strip.focus_handle(cx).focus(window);
1557            }
1558        }
1559    }
1560
1561    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
1562        attach_pasted_images_as_context(&self.context_store, cx);
1563    }
1564
1565    fn cancel_editing_message(
1566        &mut self,
1567        _: &menu::Cancel,
1568        window: &mut Window,
1569        cx: &mut Context<Self>,
1570    ) {
1571        self.editing_message.take();
1572        cx.notify();
1573
1574        if let Some(workspace) = self.workspace.upgrade() {
1575            workspace.update(cx, |workspace, cx| {
1576                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
1577                    panel.focus_handle(cx).focus(window);
1578                }
1579            });
1580        }
1581    }
1582
1583    fn confirm_editing_message(
1584        &mut self,
1585        _: &menu::Confirm,
1586        window: &mut Window,
1587        cx: &mut Context<Self>,
1588    ) {
1589        let Some((message_id, state)) = self.editing_message.take() else {
1590            return;
1591        };
1592
1593        let Some(model) = self
1594            .thread
1595            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
1596        else {
1597            return;
1598        };
1599
1600        if model.provider.must_accept_terms(cx) {
1601            cx.notify();
1602            return;
1603        }
1604
1605        let edited_text = state.editor.read(cx).text(cx);
1606
1607        let creases = state.editor.update(cx, extract_message_creases);
1608
1609        let new_context = self
1610            .context_store
1611            .read(cx)
1612            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1613
1614        let project = self.thread.read(cx).project().clone();
1615        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1616
1617        let git_store = project.read(cx).git_store().clone();
1618        let checkpoint = git_store.update(cx, |git_store, cx| git_store.checkpoint(cx));
1619
1620        let load_context_task = context::load_context(new_context, &project, &prompt_store, cx);
1621        self._load_edited_message_context_task =
1622            Some(cx.spawn_in(window, async move |this, cx| {
1623                let (context, checkpoint) =
1624                    futures::future::join(load_context_task, checkpoint).await;
1625                let _ = this
1626                    .update_in(cx, |this, window, cx| {
1627                        this.thread.update(cx, |thread, cx| {
1628                            thread.edit_message(
1629                                message_id,
1630                                Role::User,
1631                                vec![MessageSegment::Text(edited_text)],
1632                                creases,
1633                                Some(context.loaded_context),
1634                                checkpoint.ok(),
1635                                cx,
1636                            );
1637                            for message_id in this.messages_after(message_id) {
1638                                thread.delete_message(*message_id, cx);
1639                            }
1640                        });
1641
1642                        this.thread.update(cx, |thread, cx| {
1643                            thread.advance_prompt_id();
1644                            thread.cancel_last_completion(Some(window.window_handle()), cx);
1645                            thread.send_to_model(
1646                                model.model,
1647                                CompletionIntent::UserPrompt,
1648                                Some(window.window_handle()),
1649                                cx,
1650                            );
1651                        });
1652                        this._load_edited_message_context_task = None;
1653                        cx.notify();
1654                    })
1655                    .log_err();
1656            }));
1657
1658        if let Some(workspace) = self.workspace.upgrade() {
1659            workspace.update(cx, |workspace, cx| {
1660                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
1661                    panel.focus_handle(cx).focus(window);
1662                }
1663            });
1664        }
1665    }
1666
1667    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1668        self.messages
1669            .iter()
1670            .position(|id| *id == message_id)
1671            .map(|index| &self.messages[index + 1..])
1672            .unwrap_or(&[])
1673    }
1674
1675    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1676        self.cancel_editing_message(&menu::Cancel, window, cx);
1677    }
1678
1679    fn handle_regenerate_click(
1680        &mut self,
1681        _: &ClickEvent,
1682        window: &mut Window,
1683        cx: &mut Context<Self>,
1684    ) {
1685        self.confirm_editing_message(&menu::Confirm, window, cx);
1686    }
1687
1688    fn handle_feedback_click(
1689        &mut self,
1690        message_id: MessageId,
1691        feedback: ThreadFeedback,
1692        window: &mut Window,
1693        cx: &mut Context<Self>,
1694    ) {
1695        let report = self.thread.update(cx, |thread, cx| {
1696            thread.report_message_feedback(message_id, feedback, cx)
1697        });
1698
1699        cx.spawn(async move |this, cx| {
1700            report.await?;
1701            this.update(cx, |_this, cx| cx.notify())
1702        })
1703        .detach_and_log_err(cx);
1704
1705        match feedback {
1706            ThreadFeedback::Positive => {
1707                self.open_feedback_editors.remove(&message_id);
1708            }
1709            ThreadFeedback::Negative => {
1710                self.handle_show_feedback_comments(message_id, window, cx);
1711            }
1712        }
1713    }
1714
1715    fn handle_show_feedback_comments(
1716        &mut self,
1717        message_id: MessageId,
1718        window: &mut Window,
1719        cx: &mut Context<Self>,
1720    ) {
1721        let buffer = cx.new(|cx| {
1722            let empty_string = String::new();
1723            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1724        });
1725
1726        let editor = cx.new(|cx| {
1727            let mut editor = Editor::new(
1728                editor::EditorMode::AutoHeight {
1729                    min_lines: 1,
1730                    max_lines: Some(4),
1731                },
1732                buffer,
1733                None,
1734                window,
1735                cx,
1736            );
1737            editor.set_placeholder_text(
1738                "What went wrong? Share your feedback so we can improve.",
1739                cx,
1740            );
1741            editor
1742        });
1743
1744        editor.read(cx).focus_handle(cx).focus(window);
1745        self.open_feedback_editors.insert(message_id, editor);
1746        cx.notify();
1747    }
1748
1749    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1750        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1751            return;
1752        };
1753
1754        let report_task = self.thread.update(cx, |thread, cx| {
1755            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1756        });
1757
1758        let comments = editor.read(cx).text(cx);
1759        if !comments.is_empty() {
1760            let thread_id = self.thread.read(cx).id().clone();
1761            let comments_value = String::from(comments.as_str());
1762
1763            let message_content = self
1764                .thread
1765                .read(cx)
1766                .message(message_id)
1767                .map(|msg| msg.to_message_content())
1768                .unwrap_or_default();
1769
1770            telemetry::event!(
1771                "Assistant Thread Feedback Comments",
1772                thread_id,
1773                message_id = message_id.as_usize(),
1774                message_content,
1775                comments = comments_value
1776            );
1777
1778            self.open_feedback_editors.remove(&message_id);
1779
1780            cx.spawn(async move |this, cx| {
1781                report_task.await?;
1782                this.update(cx, |_this, cx| cx.notify())
1783            })
1784            .detach_and_log_err(cx);
1785        }
1786    }
1787
1788    fn render_edit_message_editor(
1789        &self,
1790        state: &EditingMessageState,
1791        _window: &mut Window,
1792        cx: &Context<Self>,
1793    ) -> impl IntoElement {
1794        let settings = ThemeSettings::get_global(cx);
1795        let font_size = TextSize::Small
1796            .rems(cx)
1797            .to_pixels(settings.agent_font_size(cx));
1798        let line_height = font_size * 1.75;
1799
1800        let colors = cx.theme().colors();
1801
1802        let text_style = TextStyle {
1803            color: colors.text,
1804            font_family: settings.buffer_font.family.clone(),
1805            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1806            font_features: settings.buffer_font.features.clone(),
1807            font_size: font_size.into(),
1808            line_height: line_height.into(),
1809            ..Default::default()
1810        };
1811
1812        v_flex()
1813            .key_context("EditMessageEditor")
1814            .on_action(cx.listener(Self::toggle_context_picker))
1815            .on_action(cx.listener(Self::remove_all_context))
1816            .on_action(cx.listener(Self::move_up))
1817            .on_action(cx.listener(Self::cancel_editing_message))
1818            .on_action(cx.listener(Self::confirm_editing_message))
1819            .capture_action(cx.listener(Self::paste))
1820            .min_h_6()
1821            .w_full()
1822            .flex_grow()
1823            .gap_2()
1824            .child(state.context_strip.clone())
1825            .child(div().pt(px(-3.)).px_neg_0p5().child(EditorElement::new(
1826                &state.editor,
1827                EditorStyle {
1828                    background: colors.editor_background,
1829                    local_player: cx.theme().players().local(),
1830                    text: text_style,
1831                    syntax: cx.theme().syntax().clone(),
1832                    ..Default::default()
1833                },
1834            )))
1835    }
1836
1837    fn render_message(
1838        &mut self,
1839        ix: usize,
1840        window: &mut Window,
1841        cx: &mut Context<Self>,
1842    ) -> AnyElement {
1843        let message_id = self.messages[ix];
1844        let workspace = self.workspace.clone();
1845        let thread = self.thread.read(cx);
1846
1847        let is_first_message = ix == 0;
1848        let is_last_message = ix == self.messages.len() - 1;
1849
1850        let Some(message) = thread.message(message_id) else {
1851            return Empty.into_any();
1852        };
1853
1854        let is_generating = thread.is_generating();
1855        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1856
1857        let loading_dots = (is_generating && is_last_message).then(|| {
1858            h_flex()
1859                .h_8()
1860                .my_3()
1861                .mx_5()
1862                .when(is_generating_stale || message.is_hidden, |this| {
1863                    this.child(LoadingLabel::new("").size(LabelSize::Small))
1864                })
1865        });
1866
1867        if message.is_hidden {
1868            return div().children(loading_dots).into_any();
1869        }
1870
1871        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1872            return Empty.into_any();
1873        };
1874
1875        // Get all the data we need from thread before we start using it in closures
1876        let checkpoint = thread.checkpoint_for_message(message_id);
1877        let configured_model = thread.configured_model().map(|m| m.model);
1878        let added_context = thread
1879            .context_for_message(message_id)
1880            .map(|context| AddedContext::new_attached(context, configured_model.as_ref(), cx))
1881            .collect::<Vec<_>>();
1882
1883        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1884        let has_tool_uses = !tool_uses.is_empty();
1885
1886        let editing_message_state = self
1887            .editing_message
1888            .as_ref()
1889            .filter(|(id, _)| *id == message_id)
1890            .map(|(_, state)| state);
1891
1892        let (editor_bg_color, panel_bg) = {
1893            let colors = cx.theme().colors();
1894            (colors.editor_background, colors.panel_background)
1895        };
1896
1897        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileMarkdown)
1898            .shape(ui::IconButtonShape::Square)
1899            .icon_size(IconSize::Small)
1900            .icon_color(Color::Ignored)
1901            .tooltip(Tooltip::text("Open Thread as Markdown"))
1902            .on_click({
1903                let thread = self.thread.clone();
1904                let workspace = self.workspace.clone();
1905                move |_, window, cx| {
1906                    if let Some(workspace) = workspace.upgrade() {
1907                        open_active_thread_as_markdown(thread.clone(), workspace, window, cx)
1908                            .detach_and_log_err(cx);
1909                    }
1910                }
1911            });
1912
1913        let scroll_to_top = IconButton::new(("scroll_to_top", ix), IconName::ArrowUp)
1914            .shape(ui::IconButtonShape::Square)
1915            .icon_size(IconSize::Small)
1916            .icon_color(Color::Ignored)
1917            .tooltip(Tooltip::text("Scroll To Top"))
1918            .on_click(cx.listener(move |this, _, _, cx| {
1919                this.scroll_to_top(cx);
1920            }));
1921
1922        let show_feedback = thread.is_turn_end(ix);
1923        let feedback_container = h_flex()
1924            .group("feedback_container")
1925            .mt_1()
1926            .py_2()
1927            .px(RESPONSE_PADDING_X)
1928            .mr_1()
1929            .gap_1()
1930            .opacity(0.4)
1931            .hover(|style| style.opacity(1.))
1932            .gap_1p5()
1933            .flex_wrap()
1934            .justify_end();
1935        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1936            Some(feedback) => feedback_container
1937                .child(
1938                    div().visible_on_hover("feedback_container").child(
1939                        Label::new(match feedback {
1940                            ThreadFeedback::Positive => "Thanks for your feedback!",
1941                            ThreadFeedback::Negative => {
1942                                "We appreciate your feedback and will use it to improve."
1943                            }
1944                        })
1945                    .color(Color::Muted)
1946                    .size(LabelSize::XSmall)
1947                    .truncate())
1948                )
1949                .child(
1950                    h_flex()
1951                        .child(
1952                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1953                                .shape(ui::IconButtonShape::Square)
1954                                .icon_size(IconSize::Small)
1955                                .icon_color(match feedback {
1956                                    ThreadFeedback::Positive => Color::Accent,
1957                                    ThreadFeedback::Negative => Color::Ignored,
1958                                })
1959                                .tooltip(Tooltip::text("Helpful Response"))
1960                                .on_click(cx.listener(move |this, _, window, cx| {
1961                                    this.handle_feedback_click(
1962                                        message_id,
1963                                        ThreadFeedback::Positive,
1964                                        window,
1965                                        cx,
1966                                    );
1967                                })),
1968                        )
1969                        .child(
1970                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1971                                .shape(ui::IconButtonShape::Square)
1972                                .icon_size(IconSize::Small)
1973                                .icon_color(match feedback {
1974                                    ThreadFeedback::Positive => Color::Ignored,
1975                                    ThreadFeedback::Negative => Color::Accent,
1976                                })
1977                                .tooltip(Tooltip::text("Not Helpful"))
1978                                .on_click(cx.listener(move |this, _, window, cx| {
1979                                    this.handle_feedback_click(
1980                                        message_id,
1981                                        ThreadFeedback::Negative,
1982                                        window,
1983                                        cx,
1984                                    );
1985                                })),
1986                        )
1987                        .child(open_as_markdown),
1988                )
1989                .into_any_element(),
1990            None if AgentSettings::get_global(cx).enable_feedback =>
1991                feedback_container
1992                .child(
1993                    div().visible_on_hover("feedback_container").child(
1994                        Label::new(
1995                            "Rating the thread sends all of your current conversation to the Zed team.",
1996                        )
1997                        .color(Color::Muted)
1998                    .size(LabelSize::XSmall)
1999                    .truncate())
2000                )
2001                .child(
2002                    h_flex()
2003                        .child(
2004                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
2005                                .shape(ui::IconButtonShape::Square)
2006                                .icon_size(IconSize::Small)
2007                                .icon_color(Color::Ignored)
2008                                .tooltip(Tooltip::text("Helpful Response"))
2009                                .on_click(cx.listener(move |this, _, window, cx| {
2010                                    this.handle_feedback_click(
2011                                        message_id,
2012                                        ThreadFeedback::Positive,
2013                                        window,
2014                                        cx,
2015                                    );
2016                                })),
2017                        )
2018                        .child(
2019                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
2020                                .shape(ui::IconButtonShape::Square)
2021                                .icon_size(IconSize::Small)
2022                                .icon_color(Color::Ignored)
2023                                .tooltip(Tooltip::text("Not Helpful"))
2024                                .on_click(cx.listener(move |this, _, window, cx| {
2025                                    this.handle_feedback_click(
2026                                        message_id,
2027                                        ThreadFeedback::Negative,
2028                                        window,
2029                                        cx,
2030                                    );
2031                                })),
2032                        )
2033                        .child(open_as_markdown)
2034                        .child(scroll_to_top),
2035                )
2036                .into_any_element(),
2037            None => feedback_container
2038                .child(h_flex()
2039                    .child(open_as_markdown))
2040                    .child(scroll_to_top)
2041                .into_any_element(),
2042        };
2043
2044        let message_is_empty = message.should_display_content();
2045        let has_content = !message_is_empty || !added_context.is_empty();
2046
2047        let message_content = has_content.then(|| {
2048            if let Some(state) = editing_message_state.as_ref() {
2049                self.render_edit_message_editor(state, window, cx)
2050                    .into_any_element()
2051            } else {
2052                v_flex()
2053                    .w_full()
2054                    .gap_1()
2055                    .when(!added_context.is_empty(), |parent| {
2056                        parent.child(h_flex().flex_wrap().gap_1().children(
2057                            added_context.into_iter().map(|added_context| {
2058                                let context = added_context.handle.clone();
2059                                ContextPill::added(added_context, false, false, None).on_click(
2060                                    Rc::new(cx.listener({
2061                                        let workspace = workspace.clone();
2062                                        move |_, _, window, cx| {
2063                                            if let Some(workspace) = workspace.upgrade() {
2064                                                open_context(&context, workspace, window, cx);
2065                                                cx.notify();
2066                                            }
2067                                        }
2068                                    })),
2069                                )
2070                            }),
2071                        ))
2072                    })
2073                    .when(!message_is_empty, |parent| {
2074                        parent.child(div().pt_0p5().min_h_6().child(self.render_message_content(
2075                            message_id,
2076                            rendered_message,
2077                            has_tool_uses,
2078                            workspace.clone(),
2079                            window,
2080                            cx,
2081                        )))
2082                    })
2083                    .into_any_element()
2084            }
2085        });
2086
2087        let styled_message = if message.ui_only {
2088            self.render_ui_notification(message_content, ix, cx)
2089        } else {
2090            match message.role {
2091                Role::User => {
2092                    let colors = cx.theme().colors();
2093                    v_flex()
2094                        .id(("message-container", ix))
2095                        .pt_2()
2096                        .pl_2()
2097                        .pr_2p5()
2098                        .pb_4()
2099                        .child(
2100                            v_flex()
2101                                .id(("user-message", ix))
2102                                .bg(editor_bg_color)
2103                                .rounded_lg()
2104                                .shadow_md()
2105                                .border_1()
2106                                .border_color(colors.border)
2107                                .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
2108                                .child(
2109                                    v_flex()
2110                                        .p_2p5()
2111                                        .gap_1()
2112                                        .children(message_content)
2113                                        .when_some(editing_message_state, |this, state| {
2114                                            let focus_handle = state.editor.focus_handle(cx);
2115
2116                                            this.child(
2117                                                h_flex()
2118                                                    .w_full()
2119                                                    .gap_1()
2120                                                    .justify_between()
2121                                                    .flex_wrap()
2122                                                    .child(
2123                                                        h_flex()
2124                                                            .gap_1p5()
2125                                                            .child(
2126                                                                div()
2127                                                                    .opacity(0.8)
2128                                                                    .child(
2129                                                                        Icon::new(IconName::Warning)
2130                                                                            .size(IconSize::Indicator)
2131                                                                            .color(Color::Warning)
2132                                                                    ),
2133                                                            )
2134                                                            .child(
2135                                                                Label::new("Editing will restart the thread from this point.")
2136                                                                    .color(Color::Muted)
2137                                                                    .size(LabelSize::XSmall),
2138                                                            ),
2139                                                    )
2140                                                    .child(
2141                                                        h_flex()
2142                                                            .gap_0p5()
2143                                                            .child(
2144                                                                IconButton::new(
2145                                                                    "cancel-edit-message",
2146                                                                    IconName::Close,
2147                                                                )
2148                                                                .shape(ui::IconButtonShape::Square)
2149                                                                .icon_color(Color::Error)
2150                                                                .icon_size(IconSize::Small)
2151                                                                .tooltip({
2152                                                                    let focus_handle = focus_handle.clone();
2153                                                                    move |window, cx| {
2154                                                                        Tooltip::for_action_in(
2155                                                                            "Cancel Edit",
2156                                                                            &menu::Cancel,
2157                                                                            &focus_handle,
2158                                                                            window,
2159                                                                            cx,
2160                                                                        )
2161                                                                    }
2162                                                                })
2163                                                                .on_click(cx.listener(Self::handle_cancel_click)),
2164                                                            )
2165                                                            .child(
2166                                                                IconButton::new(
2167                                                                    "confirm-edit-message",
2168                                                                    IconName::Return,
2169                                                                )
2170                                                                .disabled(state.editor.read(cx).is_empty(cx))
2171                                                                .shape(ui::IconButtonShape::Square)
2172                                                                .icon_color(Color::Muted)
2173                                                                .icon_size(IconSize::Small)
2174                                                                .tooltip({
2175                                                                    move |window, cx| {
2176                                                                        Tooltip::for_action_in(
2177                                                                            "Regenerate",
2178                                                                            &menu::Confirm,
2179                                                                            &focus_handle,
2180                                                                            window,
2181                                                                            cx,
2182                                                                        )
2183                                                                    }
2184                                                                })
2185                                                                .on_click(
2186                                                                    cx.listener(Self::handle_regenerate_click),
2187                                                                ),
2188                                                            ),
2189                                                    )
2190                                            )
2191                                        }),
2192                                )
2193                                .on_click(cx.listener({
2194                                    let message_creases = message.creases.clone();
2195                                    move |this, _, window, cx| {
2196                                        if let Some(message_text) =
2197                                            this.thread.read(cx).message(message_id).and_then(|message| {
2198                                                message.segments.first().and_then(|segment| {
2199                                                    match segment {
2200                                                        MessageSegment::Text(message_text) => {
2201                                                            Some(Into::<Arc<str>>::into(message_text.as_str()))
2202                                                        }
2203                                                        _ => {
2204                                                            None
2205                                                        }
2206                                                    }
2207                                                })
2208                                            })
2209                                        {
2210                                            this.start_editing_message(
2211                                                message_id,
2212                                                message_text,
2213                                                &message_creases,
2214                                                window,
2215                                                cx,
2216                                            );
2217                                        }
2218                                    }
2219                                })),
2220                        )
2221                }
2222                Role::Assistant => v_flex()
2223                    .id(("message-container", ix))
2224                    .px(RESPONSE_PADDING_X)
2225                    .gap_2()
2226                    .children(message_content)
2227                    .when(has_tool_uses, |parent| {
2228                        parent.children(tool_uses.into_iter().map(|tool_use| {
2229                            self.render_tool_use(tool_use, window, workspace.clone(), cx)
2230                        }))
2231                    }),
2232                Role::System => {
2233                    let colors = cx.theme().colors();
2234                    div().id(("message-container", ix)).py_1().px_2().child(
2235                        v_flex()
2236                            .bg(colors.editor_background)
2237                            .rounded_sm()
2238                            .child(div().p_4().children(message_content)),
2239                    )
2240                }
2241            }
2242        };
2243
2244        let after_editing_message = self
2245            .editing_message
2246            .as_ref()
2247            .is_some_and(|(editing_message_id, _)| message_id > *editing_message_id);
2248
2249        let backdrop = div()
2250            .id(("backdrop", ix))
2251            .size_full()
2252            .absolute()
2253            .inset_0()
2254            .bg(panel_bg)
2255            .opacity(0.8)
2256            .block_mouse_except_scroll()
2257            .on_click(cx.listener(Self::handle_cancel_click));
2258
2259        v_flex()
2260            .w_full()
2261            .map(|parent| {
2262                if let Some(checkpoint) = checkpoint.filter(|_| !is_generating) {
2263                    let mut is_pending = false;
2264                    let mut error = None;
2265                    if let Some(last_restore_checkpoint) =
2266                        self.thread.read(cx).last_restore_checkpoint()
2267                        && last_restore_checkpoint.message_id() == message_id
2268                    {
2269                        match last_restore_checkpoint {
2270                            LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2271                            LastRestoreCheckpoint::Error { error: err, .. } => {
2272                                error = Some(err.clone());
2273                            }
2274                        }
2275                    }
2276
2277                    let restore_checkpoint_button =
2278                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2279                            .icon(if error.is_some() {
2280                                IconName::XCircle
2281                            } else {
2282                                IconName::Undo
2283                            })
2284                            .icon_size(IconSize::XSmall)
2285                            .icon_position(IconPosition::Start)
2286                            .icon_color(if error.is_some() {
2287                                Some(Color::Error)
2288                            } else {
2289                                None
2290                            })
2291                            .label_size(LabelSize::XSmall)
2292                            .disabled(is_pending)
2293                            .on_click(cx.listener(move |this, _, _window, cx| {
2294                                this.thread.update(cx, |thread, cx| {
2295                                    thread
2296                                        .restore_checkpoint(checkpoint.clone(), cx)
2297                                        .detach_and_log_err(cx);
2298                                });
2299                            }));
2300
2301                    let restore_checkpoint_button = if is_pending {
2302                        restore_checkpoint_button
2303                            .with_animation(
2304                                ("pulsating-restore-checkpoint-button", ix),
2305                                Animation::new(Duration::from_secs(2))
2306                                    .repeat()
2307                                    .with_easing(pulsating_between(0.6, 1.)),
2308                                |label, delta| label.alpha(delta),
2309                            )
2310                            .into_any_element()
2311                    } else if let Some(error) = error {
2312                        restore_checkpoint_button
2313                            .tooltip(Tooltip::text(error))
2314                            .into_any_element()
2315                    } else {
2316                        restore_checkpoint_button.into_any_element()
2317                    };
2318
2319                    parent.child(
2320                        h_flex()
2321                            .pt_2p5()
2322                            .px_2p5()
2323                            .w_full()
2324                            .gap_1()
2325                            .child(ui::Divider::horizontal())
2326                            .child(restore_checkpoint_button)
2327                            .child(ui::Divider::horizontal()),
2328                    )
2329                } else {
2330                    parent
2331                }
2332            })
2333            .when(is_first_message, |parent| {
2334                parent.child(self.render_rules_item(cx))
2335            })
2336            .child(styled_message)
2337            .children(loading_dots)
2338            .when(show_feedback, move |parent| {
2339                parent.child(feedback_items).when_some(
2340                    self.open_feedback_editors.get(&message_id),
2341                    move |parent, feedback_editor| {
2342                        let focus_handle = feedback_editor.focus_handle(cx);
2343                        parent.child(
2344                            v_flex()
2345                                .key_context("AgentFeedbackMessageEditor")
2346                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2347                                    this.open_feedback_editors.remove(&message_id);
2348                                    cx.notify();
2349                                }))
2350                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2351                                    this.submit_feedback_message(message_id, cx);
2352                                    cx.notify();
2353                                }))
2354                                .on_action(cx.listener(Self::confirm_editing_message))
2355                                .mb_2()
2356                                .mx_4()
2357                                .p_2()
2358                                .rounded_md()
2359                                .border_1()
2360                                .border_color(cx.theme().colors().border)
2361                                .bg(cx.theme().colors().editor_background)
2362                                .child(feedback_editor.clone())
2363                                .child(
2364                                    h_flex()
2365                                        .gap_1()
2366                                        .justify_end()
2367                                        .child(
2368                                            Button::new("dismiss-feedback-message", "Cancel")
2369                                                .label_size(LabelSize::Small)
2370                                                .key_binding(
2371                                                    KeyBinding::for_action_in(
2372                                                        &menu::Cancel,
2373                                                        &focus_handle,
2374                                                        window,
2375                                                        cx,
2376                                                    )
2377                                                    .map(|kb| kb.size(rems_from_px(10.))),
2378                                                )
2379                                                .on_click(cx.listener(
2380                                                    move |this, _, _window, cx| {
2381                                                        this.open_feedback_editors
2382                                                            .remove(&message_id);
2383                                                        cx.notify();
2384                                                    },
2385                                                )),
2386                                        )
2387                                        .child(
2388                                            Button::new(
2389                                                "submit-feedback-message",
2390                                                "Share Feedback",
2391                                            )
2392                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2393                                            .label_size(LabelSize::Small)
2394                                            .key_binding(
2395                                                KeyBinding::for_action_in(
2396                                                    &menu::Confirm,
2397                                                    &focus_handle,
2398                                                    window,
2399                                                    cx,
2400                                                )
2401                                                .map(|kb| kb.size(rems_from_px(10.))),
2402                                            )
2403                                            .on_click(
2404                                                cx.listener(move |this, _, _window, cx| {
2405                                                    this.submit_feedback_message(message_id, cx);
2406                                                    cx.notify()
2407                                                }),
2408                                            ),
2409                                        ),
2410                                ),
2411                        )
2412                    },
2413                )
2414            })
2415            .when(after_editing_message, |parent| {
2416                // Backdrop to dim out the whole thread below the editing user message
2417                parent.relative().child(backdrop)
2418            })
2419            .into_any()
2420    }
2421
2422    fn render_message_content(
2423        &self,
2424        message_id: MessageId,
2425        rendered_message: &RenderedMessage,
2426        has_tool_uses: bool,
2427        workspace: WeakEntity<Workspace>,
2428        window: &Window,
2429        cx: &Context<Self>,
2430    ) -> impl IntoElement {
2431        let is_last_message = self.messages.last() == Some(&message_id);
2432        let is_generating = self.thread.read(cx).is_generating();
2433        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2434            rendered_message
2435                .segments
2436                .iter()
2437                .enumerate()
2438                .next_back()
2439                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2440                .map(|(index, _)| index)
2441        } else {
2442            None
2443        };
2444
2445        let message_role = self
2446            .thread
2447            .read(cx)
2448            .message(message_id)
2449            .map(|m| m.role)
2450            .unwrap_or(Role::User);
2451
2452        let is_assistant_message = message_role == Role::Assistant;
2453        let is_user_message = message_role == Role::User;
2454
2455        v_flex()
2456            .text_ui(cx)
2457            .gap_2()
2458            .when(is_user_message, |this| this.text_xs())
2459            .children(
2460                rendered_message.segments.iter().enumerate().map(
2461                    |(index, segment)| match segment {
2462                        RenderedMessageSegment::Thinking {
2463                            content,
2464                            scroll_handle,
2465                        } => self
2466                            .render_message_thinking_segment(
2467                                message_id,
2468                                index,
2469                                content.clone(),
2470                                scroll_handle,
2471                                Some(index) == pending_thinking_segment_index,
2472                                window,
2473                                cx,
2474                            )
2475                            .into_any_element(),
2476                        RenderedMessageSegment::Text(markdown) => {
2477                            let markdown_element = MarkdownElement::new(
2478                                markdown.clone(),
2479                                if is_user_message {
2480                                    let mut style = default_markdown_style(window, cx);
2481                                    let mut text_style = window.text_style();
2482                                    let theme_settings = ThemeSettings::get_global(cx);
2483
2484                                    let buffer_font = theme_settings.buffer_font.family.clone();
2485                                    let buffer_font_size = TextSize::Small.rems(cx);
2486
2487                                    text_style.refine(&TextStyleRefinement {
2488                                        font_family: Some(buffer_font),
2489                                        font_size: Some(buffer_font_size.into()),
2490                                        ..Default::default()
2491                                    });
2492
2493                                    style.base_text_style = text_style;
2494                                    style
2495                                } else {
2496                                    default_markdown_style(window, cx)
2497                                },
2498                            );
2499
2500                            let markdown_element = if is_assistant_message {
2501                                markdown_element.code_block_renderer(
2502                                    markdown::CodeBlockRenderer::Custom {
2503                                        render: Arc::new({
2504                                            let workspace = workspace.clone();
2505                                            let active_thread = cx.entity();
2506                                            move |kind,
2507                                                  parsed_markdown,
2508                                                  range,
2509                                                  metadata,
2510                                                  window,
2511                                                  cx| {
2512                                                render_markdown_code_block(
2513                                                    message_id,
2514                                                    range.start,
2515                                                    kind,
2516                                                    parsed_markdown,
2517                                                    metadata,
2518                                                    active_thread.clone(),
2519                                                    workspace.clone(),
2520                                                    window,
2521                                                    cx,
2522                                                )
2523                                            }
2524                                        }),
2525                                        transform: Some(Arc::new({
2526                                            let active_thread = cx.entity();
2527
2528                                            move |element, range, _, _, cx| {
2529                                                let is_expanded = active_thread
2530                                                    .read(cx)
2531                                                    .is_codeblock_expanded(message_id, range.start);
2532
2533                                                if is_expanded {
2534                                                    return element;
2535                                                }
2536
2537                                                element
2538                                            }
2539                                        })),
2540                                    },
2541                                )
2542                            } else {
2543                                markdown_element.code_block_renderer(
2544                                    markdown::CodeBlockRenderer::Default {
2545                                        copy_button: false,
2546                                        copy_button_on_hover: false,
2547                                        border: true,
2548                                    },
2549                                )
2550                            };
2551
2552                            div()
2553                                .child(markdown_element.on_url_click({
2554                                    let workspace = self.workspace.clone();
2555                                    move |text, window, cx| {
2556                                        open_markdown_link(text, workspace.clone(), window, cx);
2557                                    }
2558                                }))
2559                                .into_any_element()
2560                        }
2561                    },
2562                ),
2563            )
2564    }
2565
2566    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2567        cx.theme().colors().border.opacity(0.5)
2568    }
2569
2570    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2571        cx.theme()
2572            .colors()
2573            .element_background
2574            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2575    }
2576
2577    fn render_ui_notification(
2578        &self,
2579        message_content: impl IntoIterator<Item = impl IntoElement>,
2580        ix: usize,
2581        cx: &mut Context<Self>,
2582    ) -> Stateful<Div> {
2583        let message = div()
2584            .flex_1()
2585            .min_w_0()
2586            .text_size(TextSize::XSmall.rems(cx))
2587            .text_color(cx.theme().colors().text_muted)
2588            .children(message_content);
2589
2590        div()
2591            .id(("message-container", ix))
2592            .py_1()
2593            .px_2p5()
2594            .child(Banner::new().severity(Severity::Warning).child(message))
2595    }
2596
2597    fn render_message_thinking_segment(
2598        &self,
2599        message_id: MessageId,
2600        ix: usize,
2601        markdown: Entity<Markdown>,
2602        scroll_handle: &ScrollHandle,
2603        pending: bool,
2604        window: &Window,
2605        cx: &Context<Self>,
2606    ) -> impl IntoElement {
2607        let is_open = self
2608            .expanded_thinking_segments
2609            .get(&(message_id, ix))
2610            .copied()
2611            .unwrap_or_default();
2612
2613        let editor_bg = cx.theme().colors().panel_background;
2614
2615        div().map(|this| {
2616            if pending {
2617                this.v_flex()
2618                    .mt_neg_2()
2619                    .mb_1p5()
2620                    .child(
2621                        h_flex()
2622                            .group("disclosure-header")
2623                            .justify_between()
2624                            .child(
2625                                h_flex()
2626                                    .gap_1p5()
2627                                    .child(
2628                                        Icon::new(IconName::ToolThink)
2629                                            .size(IconSize::Small)
2630                                            .color(Color::Muted),
2631                                    )
2632                                    .child(LoadingLabel::new("Thinking").size(LabelSize::Small)),
2633                            )
2634                            .child(
2635                                h_flex()
2636                                    .gap_1()
2637                                    .child(
2638                                        div().visible_on_hover("disclosure-header").child(
2639                                            Disclosure::new("thinking-disclosure", is_open)
2640                                                .opened_icon(IconName::ChevronUp)
2641                                                .closed_icon(IconName::ChevronDown)
2642                                                .on_click(cx.listener({
2643                                                    move |this, _event, _window, _cx| {
2644                                                        let is_open = this
2645                                                            .expanded_thinking_segments
2646                                                            .entry((message_id, ix))
2647                                                            .or_insert(false);
2648
2649                                                        *is_open = !*is_open;
2650                                                    }
2651                                                })),
2652                                        ),
2653                                    )
2654                                    .child({
2655                                        Icon::new(IconName::ArrowCircle)
2656                                            .color(Color::Accent)
2657                                            .size(IconSize::Small)
2658                                            .with_animation(
2659                                                "arrow-circle",
2660                                                Animation::new(Duration::from_secs(2)).repeat(),
2661                                                |icon, delta| {
2662                                                    icon.transform(Transformation::rotate(
2663                                                        percentage(delta),
2664                                                    ))
2665                                                },
2666                                            )
2667                                    }),
2668                            ),
2669                    )
2670                    .when(!is_open, |this| {
2671                        let gradient_overlay = div()
2672                            .rounded_b_lg()
2673                            .h_full()
2674                            .absolute()
2675                            .w_full()
2676                            .bottom_0()
2677                            .left_0()
2678                            .bg(linear_gradient(
2679                                180.,
2680                                linear_color_stop(editor_bg, 1.),
2681                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2682                            ));
2683
2684                        this.child(
2685                            div()
2686                                .relative()
2687                                .bg(editor_bg)
2688                                .rounded_b_lg()
2689                                .mt_2()
2690                                .pl_4()
2691                                .child(
2692                                    div()
2693                                        .id(("thinking-content", ix))
2694                                        .max_h_20()
2695                                        .track_scroll(scroll_handle)
2696                                        .text_ui_sm(cx)
2697                                        .overflow_hidden()
2698                                        .child(
2699                                            MarkdownElement::new(
2700                                                markdown.clone(),
2701                                                default_markdown_style(window, cx),
2702                                            )
2703                                            .on_url_click({
2704                                                let workspace = self.workspace.clone();
2705                                                move |text, window, cx| {
2706                                                    open_markdown_link(
2707                                                        text,
2708                                                        workspace.clone(),
2709                                                        window,
2710                                                        cx,
2711                                                    );
2712                                                }
2713                                            }),
2714                                        ),
2715                                )
2716                                .child(gradient_overlay),
2717                        )
2718                    })
2719                    .when(is_open, |this| {
2720                        this.child(
2721                            div()
2722                                .id(("thinking-content", ix))
2723                                .h_full()
2724                                .bg(editor_bg)
2725                                .text_ui_sm(cx)
2726                                .child(
2727                                    MarkdownElement::new(
2728                                        markdown.clone(),
2729                                        default_markdown_style(window, cx),
2730                                    )
2731                                    .on_url_click({
2732                                        let workspace = self.workspace.clone();
2733                                        move |text, window, cx| {
2734                                            open_markdown_link(text, workspace.clone(), window, cx);
2735                                        }
2736                                    }),
2737                                ),
2738                        )
2739                    })
2740            } else {
2741                this.v_flex()
2742                    .mt_neg_2()
2743                    .child(
2744                        h_flex()
2745                            .group("disclosure-header")
2746                            .pr_1()
2747                            .justify_between()
2748                            .opacity(0.8)
2749                            .hover(|style| style.opacity(1.))
2750                            .child(
2751                                h_flex()
2752                                    .gap_1p5()
2753                                    .child(
2754                                        Icon::new(IconName::ToolThink)
2755                                            .size(IconSize::XSmall)
2756                                            .color(Color::Muted),
2757                                    )
2758                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2759                            )
2760                            .child(
2761                                div().visible_on_hover("disclosure-header").child(
2762                                    Disclosure::new("thinking-disclosure", is_open)
2763                                        .opened_icon(IconName::ChevronUp)
2764                                        .closed_icon(IconName::ChevronDown)
2765                                        .on_click(cx.listener({
2766                                            move |this, _event, _window, _cx| {
2767                                                let is_open = this
2768                                                    .expanded_thinking_segments
2769                                                    .entry((message_id, ix))
2770                                                    .or_insert(false);
2771
2772                                                *is_open = !*is_open;
2773                                            }
2774                                        })),
2775                                ),
2776                            ),
2777                    )
2778                    .child(
2779                        div()
2780                            .id(("thinking-content", ix))
2781                            .relative()
2782                            .mt_1p5()
2783                            .ml_1p5()
2784                            .pl_2p5()
2785                            .border_l_1()
2786                            .border_color(cx.theme().colors().border_variant)
2787                            .text_ui_sm(cx)
2788                            .when(is_open, |this| {
2789                                this.child(
2790                                    MarkdownElement::new(
2791                                        markdown.clone(),
2792                                        default_markdown_style(window, cx),
2793                                    )
2794                                    .on_url_click({
2795                                        let workspace = self.workspace.clone();
2796                                        move |text, window, cx| {
2797                                            open_markdown_link(text, workspace.clone(), window, cx);
2798                                        }
2799                                    }),
2800                                )
2801                            }),
2802                    )
2803            }
2804        })
2805    }
2806
2807    fn render_tool_use(
2808        &self,
2809        tool_use: ToolUse,
2810        window: &mut Window,
2811        workspace: WeakEntity<Workspace>,
2812        cx: &mut Context<Self>,
2813    ) -> impl IntoElement + use<> {
2814        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2815            return card.render(&tool_use.status, window, workspace, cx);
2816        }
2817
2818        let is_open = self
2819            .expanded_tool_uses
2820            .get(&tool_use.id)
2821            .copied()
2822            .unwrap_or_default();
2823
2824        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2825
2826        let fs = self
2827            .workspace
2828            .upgrade()
2829            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2830        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2831        let needs_confirmation_tools = tool_use.needs_confirmation;
2832
2833        let status_icons = div().child(match &tool_use.status {
2834            ToolUseStatus::NeedsConfirmation => {
2835                let icon = Icon::new(IconName::Warning)
2836                    .color(Color::Warning)
2837                    .size(IconSize::Small);
2838                icon.into_any_element()
2839            }
2840            ToolUseStatus::Pending
2841            | ToolUseStatus::InputStillStreaming
2842            | ToolUseStatus::Running => {
2843                let icon = Icon::new(IconName::ArrowCircle)
2844                    .color(Color::Accent)
2845                    .size(IconSize::Small);
2846                icon.with_animation(
2847                    "arrow-circle",
2848                    Animation::new(Duration::from_secs(2)).repeat(),
2849                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2850                )
2851                .into_any_element()
2852            }
2853            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2854            ToolUseStatus::Error(_) => {
2855                let icon = Icon::new(IconName::Close)
2856                    .color(Color::Error)
2857                    .size(IconSize::Small);
2858                icon.into_any_element()
2859            }
2860        });
2861
2862        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2863        let results_content_container = || v_flex().p_2().gap_0p5();
2864
2865        let results_content = v_flex()
2866            .gap_1()
2867            .child(
2868                results_content_container()
2869                    .child(
2870                        Label::new("Input")
2871                            .size(LabelSize::XSmall)
2872                            .color(Color::Muted)
2873                            .buffer_font(cx),
2874                    )
2875                    .child(
2876                        div()
2877                            .w_full()
2878                            .text_ui_sm(cx)
2879                            .children(rendered_tool_use.as_ref().map(|rendered| {
2880                                MarkdownElement::new(
2881                                    rendered.input.clone(),
2882                                    tool_use_markdown_style(window, cx),
2883                                )
2884                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2885                                    copy_button: false,
2886                                    copy_button_on_hover: false,
2887                                    border: false,
2888                                })
2889                                .on_url_click({
2890                                    let workspace = self.workspace.clone();
2891                                    move |text, window, cx| {
2892                                        open_markdown_link(text, workspace.clone(), window, cx);
2893                                    }
2894                                })
2895                            })),
2896                    ),
2897            )
2898            .map(|container| match tool_use.status {
2899                ToolUseStatus::Finished(_) => container.child(
2900                    results_content_container()
2901                        .border_t_1()
2902                        .border_color(self.tool_card_border_color(cx))
2903                        .child(
2904                            Label::new("Result")
2905                                .size(LabelSize::XSmall)
2906                                .color(Color::Muted)
2907                                .buffer_font(cx),
2908                        )
2909                        .child(div().w_full().text_ui_sm(cx).children(
2910                            rendered_tool_use.as_ref().map(|rendered| {
2911                                MarkdownElement::new(
2912                                    rendered.output.clone(),
2913                                    tool_use_markdown_style(window, cx),
2914                                )
2915                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2916                                    copy_button: false,
2917                                    copy_button_on_hover: false,
2918                                    border: false,
2919                                })
2920                                .on_url_click({
2921                                    let workspace = self.workspace.clone();
2922                                    move |text, window, cx| {
2923                                        open_markdown_link(text, workspace.clone(), window, cx);
2924                                    }
2925                                })
2926                                .into_any_element()
2927                            }),
2928                        )),
2929                ),
2930                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2931                    results_content_container()
2932                        .border_t_1()
2933                        .border_color(self.tool_card_border_color(cx))
2934                        .child(
2935                            h_flex()
2936                                .gap_1()
2937                                .child(
2938                                    Icon::new(IconName::ArrowCircle)
2939                                        .size(IconSize::Small)
2940                                        .color(Color::Accent)
2941                                        .with_animation(
2942                                            "arrow-circle",
2943                                            Animation::new(Duration::from_secs(2)).repeat(),
2944                                            |icon, delta| {
2945                                                icon.transform(Transformation::rotate(percentage(
2946                                                    delta,
2947                                                )))
2948                                            },
2949                                        ),
2950                                )
2951                                .child(
2952                                    Label::new("Running…")
2953                                        .size(LabelSize::XSmall)
2954                                        .color(Color::Muted)
2955                                        .buffer_font(cx),
2956                                ),
2957                        ),
2958                ),
2959                ToolUseStatus::Error(_) => container.child(
2960                    results_content_container()
2961                        .border_t_1()
2962                        .border_color(self.tool_card_border_color(cx))
2963                        .child(
2964                            Label::new("Error")
2965                                .size(LabelSize::XSmall)
2966                                .color(Color::Muted)
2967                                .buffer_font(cx),
2968                        )
2969                        .child(
2970                            div()
2971                                .text_ui_sm(cx)
2972                                .children(rendered_tool_use.as_ref().map(|rendered| {
2973                                    MarkdownElement::new(
2974                                        rendered.output.clone(),
2975                                        tool_use_markdown_style(window, cx),
2976                                    )
2977                                    .on_url_click({
2978                                        let workspace = self.workspace.clone();
2979                                        move |text, window, cx| {
2980                                            open_markdown_link(text, workspace.clone(), window, cx);
2981                                        }
2982                                    })
2983                                    .into_any_element()
2984                                })),
2985                        ),
2986                ),
2987                ToolUseStatus::Pending => container,
2988                ToolUseStatus::NeedsConfirmation => container.child(
2989                    results_content_container()
2990                        .border_t_1()
2991                        .border_color(self.tool_card_border_color(cx))
2992                        .child(
2993                            Label::new("Asking Permission")
2994                                .size(LabelSize::Small)
2995                                .color(Color::Muted)
2996                                .buffer_font(cx),
2997                        ),
2998                ),
2999            });
3000
3001        let gradient_overlay = |color: Hsla| {
3002            div()
3003                .h_full()
3004                .absolute()
3005                .w_12()
3006                .bottom_0()
3007                .map(|element| {
3008                    if is_status_finished {
3009                        element.right_6()
3010                    } else {
3011                        element.right(px(44.))
3012                    }
3013                })
3014                .bg(linear_gradient(
3015                    90.,
3016                    linear_color_stop(color, 1.),
3017                    linear_color_stop(color.opacity(0.2), 0.),
3018                ))
3019        };
3020
3021        v_flex().gap_1().mb_2().map(|element| {
3022            if !needs_confirmation_tools {
3023                element.child(
3024                    v_flex()
3025                        .child(
3026                            h_flex()
3027                                .group("disclosure-header")
3028                                .relative()
3029                                .gap_1p5()
3030                                .justify_between()
3031                                .opacity(0.8)
3032                                .hover(|style| style.opacity(1.))
3033                                .when(!is_status_finished, |this| this.pr_2())
3034                                .child(
3035                                    h_flex()
3036                                        .id("tool-label-container")
3037                                        .gap_1p5()
3038                                        .max_w_full()
3039                                        .overflow_x_scroll()
3040                                        .child(
3041                                            Icon::new(tool_use.icon)
3042                                                .size(IconSize::Small)
3043                                                .color(Color::Muted),
3044                                        )
3045                                        .child(
3046                                            h_flex().pr_8().text_size(rems(0.8125)).children(
3047                                                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| {
3048                                                    open_markdown_link(text, workspace.clone(), window, cx);
3049                                                }}))
3050                                            ),
3051                                        ),
3052                                )
3053                                .child(
3054                                    h_flex()
3055                                        .gap_1()
3056                                        .child(
3057                                            div().visible_on_hover("disclosure-header").child(
3058                                                Disclosure::new("tool-use-disclosure", is_open)
3059                                                    .opened_icon(IconName::ChevronUp)
3060                                                    .closed_icon(IconName::ChevronDown)
3061                                                    .on_click(cx.listener({
3062                                                        let tool_use_id = tool_use.id.clone();
3063                                                        move |this, _event, _window, _cx| {
3064                                                            let is_open = this
3065                                                                .expanded_tool_uses
3066                                                                .entry(tool_use_id.clone())
3067                                                                .or_insert(false);
3068
3069                                                            *is_open = !*is_open;
3070                                                        }
3071                                                    })),
3072                                            ),
3073                                        )
3074                                        .child(status_icons),
3075                                )
3076                                .child(gradient_overlay(cx.theme().colors().panel_background)),
3077                        )
3078                        .map(|parent| {
3079                            if !is_open {
3080                                return parent;
3081                            }
3082
3083                            parent.child(
3084                                v_flex()
3085                                    .mt_1()
3086                                    .border_1()
3087                                    .border_color(self.tool_card_border_color(cx))
3088                                    .bg(cx.theme().colors().editor_background)
3089                                    .rounded_lg()
3090                                    .child(results_content),
3091                            )
3092                        }),
3093                )
3094            } else {
3095                v_flex()
3096                    .mb_2()
3097                    .rounded_lg()
3098                    .border_1()
3099                    .border_color(self.tool_card_border_color(cx))
3100                    .overflow_hidden()
3101                    .child(
3102                        h_flex()
3103                            .group("disclosure-header")
3104                            .relative()
3105                            .justify_between()
3106                            .py_1()
3107                            .map(|element| {
3108                                if is_status_finished {
3109                                    element.pl_2().pr_0p5()
3110                                } else {
3111                                    element.px_2()
3112                                }
3113                            })
3114                            .bg(self.tool_card_header_bg(cx))
3115                            .map(|element| {
3116                                if is_open {
3117                                    element.border_b_1().rounded_t_md()
3118                                } else if needs_confirmation {
3119                                    element.rounded_t_md()
3120                                } else {
3121                                    element.rounded_md()
3122                                }
3123                            })
3124                            .border_color(self.tool_card_border_color(cx))
3125                            .child(
3126                                h_flex()
3127                                    .id("tool-label-container")
3128                                    .gap_1p5()
3129                                    .max_w_full()
3130                                    .overflow_x_scroll()
3131                                    .child(
3132                                        Icon::new(tool_use.icon)
3133                                            .size(IconSize::XSmall)
3134                                            .color(Color::Muted),
3135                                    )
3136                                    .child(
3137                                        h_flex().pr_8().text_ui_sm(cx).children(
3138                                            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| {
3139                                                open_markdown_link(text, workspace.clone(), window, cx);
3140                                            }}))
3141                                        ),
3142                                    ),
3143                            )
3144                            .child(
3145                                h_flex()
3146                                    .gap_1()
3147                                    .child(
3148                                        div().visible_on_hover("disclosure-header").child(
3149                                            Disclosure::new("tool-use-disclosure", is_open)
3150                                                .opened_icon(IconName::ChevronUp)
3151                                                .closed_icon(IconName::ChevronDown)
3152                                                .on_click(cx.listener({
3153                                                    let tool_use_id = tool_use.id.clone();
3154                                                    move |this, _event, _window, _cx| {
3155                                                        let is_open = this
3156                                                            .expanded_tool_uses
3157                                                            .entry(tool_use_id.clone())
3158                                                            .or_insert(false);
3159
3160                                                        *is_open = !*is_open;
3161                                                    }
3162                                                })),
3163                                        ),
3164                                    )
3165                                    .child(status_icons),
3166                            )
3167                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
3168                    )
3169                    .map(|parent| {
3170                        if !is_open {
3171                            return parent;
3172                        }
3173
3174                        parent.child(
3175                            v_flex()
3176                                .bg(cx.theme().colors().editor_background)
3177                                .map(|element| {
3178                                    if  needs_confirmation {
3179                                        element.rounded_none()
3180                                    } else {
3181                                        element.rounded_b_lg()
3182                                    }
3183                                })
3184                                .child(results_content),
3185                        )
3186                    })
3187                    .when(needs_confirmation, |this| {
3188                        this.child(
3189                            h_flex()
3190                                .py_1()
3191                                .pl_2()
3192                                .pr_1()
3193                                .gap_1()
3194                                .justify_between()
3195                                .flex_wrap()
3196                                .bg(cx.theme().colors().editor_background)
3197                                .border_t_1()
3198                                .border_color(self.tool_card_border_color(cx))
3199                                .rounded_b_lg()
3200                                .child(
3201                                    div()
3202                                        .min_w(rems_from_px(145.))
3203                                        .child(LoadingLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3204                                    )
3205                                )
3206                                .child(
3207                                    h_flex()
3208                                        .gap_0p5()
3209                                        .child({
3210                                            let tool_id = tool_use.id.clone();
3211                                            Button::new(
3212                                                "always-allow-tool-action",
3213                                                "Always Allow",
3214                                            )
3215                                            .label_size(LabelSize::Small)
3216                                            .icon(IconName::CheckDouble)
3217                                            .icon_position(IconPosition::Start)
3218                                            .icon_size(IconSize::Small)
3219                                            .icon_color(Color::Success)
3220                                            .tooltip(move |window, cx|  {
3221                                                Tooltip::with_meta(
3222                                                    "Never ask for permission",
3223                                                    None,
3224                                                    "Restore the original behavior in your Agent Panel settings",
3225                                                    window,
3226                                                    cx,
3227                                                )
3228                                            })
3229                                            .on_click(cx.listener(
3230                                                move |this, event, window, cx| {
3231                                                    if let Some(fs) = fs.clone() {
3232                                                        update_settings_file::<AgentSettings>(
3233                                                            fs.clone(),
3234                                                            cx,
3235                                                            |settings, _| {
3236                                                                settings.set_always_allow_tool_actions(true);
3237                                                            },
3238                                                        );
3239                                                    }
3240                                                    this.handle_allow_tool(
3241                                                        tool_id.clone(),
3242                                                        event,
3243                                                        window,
3244                                                        cx,
3245                                                    )
3246                                                },
3247                                            ))
3248                                        })
3249                                        .child({
3250                                            let tool_id = tool_use.id.clone();
3251                                            Button::new("allow-tool-action", "Allow")
3252                                                .label_size(LabelSize::Small)
3253                                                .icon(IconName::Check)
3254                                                .icon_position(IconPosition::Start)
3255                                                .icon_size(IconSize::Small)
3256                                                .icon_color(Color::Success)
3257                                                .on_click(cx.listener(
3258                                                    move |this, event, window, cx| {
3259                                                        this.handle_allow_tool(
3260                                                            tool_id.clone(),
3261                                                            event,
3262                                                            window,
3263                                                            cx,
3264                                                        )
3265                                                    },
3266                                                ))
3267                                        })
3268                                        .child({
3269                                            let tool_id = tool_use.id.clone();
3270                                            let tool_name: Arc<str> = tool_use.name.into();
3271                                            Button::new("deny-tool", "Deny")
3272                                                .label_size(LabelSize::Small)
3273                                                .icon(IconName::Close)
3274                                                .icon_position(IconPosition::Start)
3275                                                .icon_size(IconSize::Small)
3276                                                .icon_color(Color::Error)
3277                                                .on_click(cx.listener(
3278                                                    move |this, event, window, cx| {
3279                                                        this.handle_deny_tool(
3280                                                            tool_id.clone(),
3281                                                            tool_name.clone(),
3282                                                            event,
3283                                                            window,
3284                                                            cx,
3285                                                        )
3286                                                    },
3287                                                ))
3288                                        }),
3289                                ),
3290                        )
3291                    })
3292            }
3293        }).into_any_element()
3294    }
3295
3296    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3297        let project_context = self.thread.read(cx).project_context();
3298        let project_context = project_context.borrow();
3299        let Some(project_context) = project_context.as_ref() else {
3300            return div().into_any();
3301        };
3302
3303        let user_rules_text = if project_context.user_rules.is_empty() {
3304            None
3305        } else if project_context.user_rules.len() == 1 {
3306            let user_rules = &project_context.user_rules[0];
3307
3308            match user_rules.title.as_ref() {
3309                Some(title) => Some(format!("Using \"{title}\" user rule")),
3310                None => Some("Using user rule".into()),
3311            }
3312        } else {
3313            Some(format!(
3314                "Using {} user rules",
3315                project_context.user_rules.len()
3316            ))
3317        };
3318
3319        let first_user_rules_id = project_context
3320            .user_rules
3321            .first()
3322            .map(|user_rules| user_rules.uuid.0);
3323
3324        let rules_files = project_context
3325            .worktrees
3326            .iter()
3327            .filter_map(|worktree| worktree.rules_file.as_ref())
3328            .collect::<Vec<_>>();
3329
3330        let rules_file_text = match rules_files.as_slice() {
3331            &[] => None,
3332            &[rules_file] => Some(format!(
3333                "Using project {:?} file",
3334                rules_file.path_in_worktree
3335            )),
3336            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3337        };
3338
3339        if user_rules_text.is_none() && rules_file_text.is_none() {
3340            return div().into_any();
3341        }
3342
3343        v_flex()
3344            .pt_2()
3345            .px_2p5()
3346            .gap_1()
3347            .when_some(user_rules_text, |parent, user_rules_text| {
3348                parent.child(
3349                    h_flex()
3350                        .w_full()
3351                        .child(
3352                            Icon::new(RULES_ICON)
3353                                .size(IconSize::XSmall)
3354                                .color(Color::Disabled),
3355                        )
3356                        .child(
3357                            Label::new(user_rules_text)
3358                                .size(LabelSize::XSmall)
3359                                .color(Color::Muted)
3360                                .truncate()
3361                                .buffer_font(cx)
3362                                .ml_1p5()
3363                                .mr_0p5(),
3364                        )
3365                        .child(
3366                            IconButton::new("open-prompt-library", IconName::ArrowUpRight)
3367                                .shape(ui::IconButtonShape::Square)
3368                                .icon_size(IconSize::XSmall)
3369                                .icon_color(Color::Ignored)
3370                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3371                                .tooltip(Tooltip::text("View User Rules"))
3372                                .on_click(move |_event, window, cx| {
3373                                    window.dispatch_action(
3374                                        Box::new(OpenRulesLibrary {
3375                                            prompt_to_select: first_user_rules_id,
3376                                        }),
3377                                        cx,
3378                                    )
3379                                }),
3380                        ),
3381                )
3382            })
3383            .when_some(rules_file_text, |parent, rules_file_text| {
3384                parent.child(
3385                    h_flex()
3386                        .w_full()
3387                        .child(
3388                            Icon::new(IconName::File)
3389                                .size(IconSize::XSmall)
3390                                .color(Color::Disabled),
3391                        )
3392                        .child(
3393                            Label::new(rules_file_text)
3394                                .size(LabelSize::XSmall)
3395                                .color(Color::Muted)
3396                                .buffer_font(cx)
3397                                .ml_1p5()
3398                                .mr_0p5(),
3399                        )
3400                        .child(
3401                            IconButton::new("open-rule", IconName::ArrowUpRight)
3402                                .shape(ui::IconButtonShape::Square)
3403                                .icon_size(IconSize::XSmall)
3404                                .icon_color(Color::Ignored)
3405                                .on_click(cx.listener(Self::handle_open_rules))
3406                                .tooltip(Tooltip::text("View Rules")),
3407                        ),
3408                )
3409            })
3410            .into_any()
3411    }
3412
3413    fn handle_allow_tool(
3414        &mut self,
3415        tool_use_id: LanguageModelToolUseId,
3416        _: &ClickEvent,
3417        window: &mut Window,
3418        cx: &mut Context<Self>,
3419    ) {
3420        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3421            .thread
3422            .read(cx)
3423            .pending_tool(&tool_use_id)
3424            .map(|tool_use| tool_use.status.clone())
3425        {
3426            self.thread.update(cx, |thread, cx| {
3427                if let Some(configured) = thread.get_or_init_configured_model(cx) {
3428                    thread.run_tool(
3429                        c.tool_use_id.clone(),
3430                        c.ui_text.clone(),
3431                        c.input.clone(),
3432                        c.request.clone(),
3433                        c.tool.clone(),
3434                        configured.model,
3435                        Some(window.window_handle()),
3436                        cx,
3437                    );
3438                }
3439            });
3440        }
3441    }
3442
3443    fn handle_deny_tool(
3444        &mut self,
3445        tool_use_id: LanguageModelToolUseId,
3446        tool_name: Arc<str>,
3447        _: &ClickEvent,
3448        window: &mut Window,
3449        cx: &mut Context<Self>,
3450    ) {
3451        let window_handle = window.window_handle();
3452        self.thread.update(cx, |thread, cx| {
3453            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3454        });
3455    }
3456
3457    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3458        let project_context = self.thread.read(cx).project_context();
3459        let project_context = project_context.borrow();
3460        let Some(project_context) = project_context.as_ref() else {
3461            return;
3462        };
3463
3464        let project_entry_ids = project_context
3465            .worktrees
3466            .iter()
3467            .flat_map(|worktree| worktree.rules_file.as_ref())
3468            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3469            .collect::<Vec<_>>();
3470
3471        self.workspace
3472            .update(cx, move |workspace, cx| {
3473                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3474                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3475                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3476                let project = workspace.project().read(cx);
3477                let project_paths = project_entry_ids
3478                    .into_iter()
3479                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3480                    .collect::<Vec<_>>();
3481                for project_path in project_paths {
3482                    workspace
3483                        .open_path(project_path, None, true, window, cx)
3484                        .detach_and_log_err(cx);
3485                }
3486            })
3487            .ok();
3488    }
3489
3490    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3491        for window in self.notifications.drain(..) {
3492            window
3493                .update(cx, |_, window, _| {
3494                    window.remove_window();
3495                })
3496                .ok();
3497
3498            self.notification_subscriptions.remove(&window);
3499        }
3500    }
3501
3502    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Stateful<Div> {
3503        div()
3504            .occlude()
3505            .id("active-thread-scrollbar")
3506            .on_mouse_move(cx.listener(|_, _, _, cx| {
3507                cx.notify();
3508                cx.stop_propagation()
3509            }))
3510            .on_hover(|_, _, cx| {
3511                cx.stop_propagation();
3512            })
3513            .on_any_mouse_down(|_, _, cx| {
3514                cx.stop_propagation();
3515            })
3516            .on_mouse_up(
3517                MouseButton::Left,
3518                cx.listener(|_, _, _, cx| {
3519                    cx.stop_propagation();
3520                }),
3521            )
3522            .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3523                cx.notify();
3524            }))
3525            .h_full()
3526            .absolute()
3527            .right_1()
3528            .top_1()
3529            .bottom_0()
3530            .w(px(12.))
3531            .cursor_default()
3532            .children(Scrollbar::vertical(self.scrollbar_state.clone()).map(|s| s.auto_hide(cx)))
3533    }
3534
3535    pub fn is_codeblock_expanded(&self, message_id: MessageId, ix: usize) -> bool {
3536        self.expanded_code_blocks
3537            .get(&(message_id, ix))
3538            .copied()
3539            .unwrap_or(true)
3540    }
3541
3542    pub fn toggle_codeblock_expanded(&mut self, message_id: MessageId, ix: usize) {
3543        let is_expanded = self
3544            .expanded_code_blocks
3545            .entry((message_id, ix))
3546            .or_insert(true);
3547        *is_expanded = !*is_expanded;
3548    }
3549
3550    pub fn scroll_to_top(&mut self, cx: &mut Context<Self>) {
3551        self.list_state.scroll_to(ListOffset::default());
3552        cx.notify();
3553    }
3554
3555    pub fn scroll_to_bottom(&mut self, cx: &mut Context<Self>) {
3556        self.list_state.reset(self.messages.len());
3557        cx.notify();
3558    }
3559}
3560
3561pub enum ActiveThreadEvent {
3562    EditingMessageTokenCountChanged,
3563}
3564
3565impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3566
3567impl Render for ActiveThread {
3568    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3569        v_flex()
3570            .size_full()
3571            .relative()
3572            .bg(cx.theme().colors().panel_background)
3573            .child(list(self.list_state.clone(), cx.processor(Self::render_message)).flex_grow())
3574            .child(self.render_vertical_scrollbar(cx))
3575    }
3576}
3577
3578pub(crate) fn open_active_thread_as_markdown(
3579    thread: Entity<Thread>,
3580    workspace: Entity<Workspace>,
3581    window: &mut Window,
3582    cx: &mut App,
3583) -> Task<anyhow::Result<()>> {
3584    let markdown_language_task = workspace
3585        .read(cx)
3586        .app_state()
3587        .languages
3588        .language_for_name("Markdown");
3589
3590    window.spawn(cx, async move |cx| {
3591        let markdown_language = markdown_language_task.await?;
3592
3593        workspace.update_in(cx, |workspace, window, cx| {
3594            let thread = thread.read(cx);
3595            let markdown = thread.to_markdown(cx)?;
3596            let thread_summary = thread.summary().or_default().to_string();
3597
3598            let project = workspace.project().clone();
3599
3600            if !project.read(cx).is_local() {
3601                anyhow::bail!("failed to open active thread as markdown in remote project");
3602            }
3603
3604            let buffer = project.update(cx, |project, cx| {
3605                project.create_local_buffer(&markdown, Some(markdown_language), cx)
3606            });
3607            let buffer =
3608                cx.new(|cx| MultiBuffer::singleton(buffer, cx).with_title(thread_summary.clone()));
3609
3610            workspace.add_item_to_active_pane(
3611                Box::new(cx.new(|cx| {
3612                    let mut editor =
3613                        Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
3614                    editor.set_breadcrumb_header(thread_summary);
3615                    editor
3616                })),
3617                None,
3618                true,
3619                window,
3620                cx,
3621            );
3622
3623            anyhow::Ok(())
3624        })??;
3625        anyhow::Ok(())
3626    })
3627}
3628
3629pub(crate) fn open_context(
3630    context: &AgentContextHandle,
3631    workspace: Entity<Workspace>,
3632    window: &mut Window,
3633    cx: &mut App,
3634) {
3635    match context {
3636        AgentContextHandle::File(file_context) => {
3637            if let Some(project_path) = file_context.project_path(cx) {
3638                workspace.update(cx, |workspace, cx| {
3639                    workspace
3640                        .open_path(project_path, None, true, window, cx)
3641                        .detach_and_log_err(cx);
3642                });
3643            }
3644        }
3645
3646        AgentContextHandle::Directory(directory_context) => {
3647            let entry_id = directory_context.entry_id;
3648            workspace.update(cx, |workspace, cx| {
3649                workspace.project().update(cx, |_project, cx| {
3650                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3651                })
3652            })
3653        }
3654
3655        AgentContextHandle::Symbol(symbol_context) => {
3656            let buffer = symbol_context.buffer.read(cx);
3657            if let Some(project_path) = buffer.project_path(cx) {
3658                let snapshot = buffer.snapshot();
3659                let target_position = symbol_context.range.start.to_point(&snapshot);
3660                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3661                    .detach();
3662            }
3663        }
3664
3665        AgentContextHandle::Selection(selection_context) => {
3666            let buffer = selection_context.buffer.read(cx);
3667            if let Some(project_path) = buffer.project_path(cx) {
3668                let snapshot = buffer.snapshot();
3669                let target_position = selection_context.range.start.to_point(&snapshot);
3670
3671                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3672                    .detach();
3673            }
3674        }
3675
3676        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3677            cx.open_url(&fetched_url_context.url);
3678        }
3679
3680        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3681            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3682                let thread = thread_context.thread.clone();
3683                window.defer(cx, move |window, cx| {
3684                    panel.update(cx, |panel, cx| {
3685                        panel.open_thread(thread, window, cx);
3686                    });
3687                });
3688            }
3689        }),
3690
3691        AgentContextHandle::TextThread(text_thread_context) => {
3692            workspace.update(cx, |workspace, cx| {
3693                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3694                    let context = text_thread_context.context.clone();
3695                    window.defer(cx, move |window, cx| {
3696                        panel.update(cx, |panel, cx| {
3697                            panel.open_prompt_editor(context, window, cx)
3698                        });
3699                    });
3700                }
3701            })
3702        }
3703
3704        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3705            Box::new(OpenRulesLibrary {
3706                prompt_to_select: Some(rules_context.prompt_id.0),
3707            }),
3708            cx,
3709        ),
3710
3711        AgentContextHandle::Image(_) => {}
3712    }
3713}
3714
3715pub(crate) fn attach_pasted_images_as_context(
3716    context_store: &Entity<ContextStore>,
3717    cx: &mut App,
3718) -> bool {
3719    let images = cx
3720        .read_from_clipboard()
3721        .map(|item| {
3722            item.into_entries()
3723                .filter_map(|entry| {
3724                    if let ClipboardEntry::Image(image) = entry {
3725                        Some(image)
3726                    } else {
3727                        None
3728                    }
3729                })
3730                .collect::<Vec<_>>()
3731        })
3732        .unwrap_or_default();
3733
3734    if images.is_empty() {
3735        return false;
3736    }
3737    cx.stop_propagation();
3738
3739    context_store.update(cx, |store, cx| {
3740        for image in images {
3741            store.add_image_instance(Arc::new(image), cx);
3742        }
3743    });
3744    true
3745}
3746
3747fn open_editor_at_position(
3748    project_path: project::ProjectPath,
3749    target_position: Point,
3750    workspace: &Entity<Workspace>,
3751    window: &mut Window,
3752    cx: &mut App,
3753) -> Task<()> {
3754    let open_task = workspace.update(cx, |workspace, cx| {
3755        workspace.open_path(project_path, None, true, window, cx)
3756    });
3757    window.spawn(cx, async move |cx| {
3758        if let Some(active_editor) = open_task
3759            .await
3760            .log_err()
3761            .and_then(|item| item.downcast::<Editor>())
3762        {
3763            active_editor
3764                .downgrade()
3765                .update_in(cx, |editor, window, cx| {
3766                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3767                })
3768                .log_err();
3769        }
3770    })
3771}
3772
3773#[cfg(test)]
3774mod tests {
3775    use super::*;
3776    use agent::{MessageSegment, context::ContextLoadResult, thread_store};
3777    use assistant_tool::{ToolRegistry, ToolWorkingSet};
3778    use editor::EditorSettings;
3779    use fs::FakeFs;
3780    use gpui::{AppContext, TestAppContext, VisualTestContext};
3781    use language_model::{
3782        ConfiguredModel, LanguageModel, LanguageModelRegistry,
3783        fake_provider::{FakeLanguageModel, FakeLanguageModelProvider},
3784    };
3785    use project::Project;
3786    use prompt_store::PromptBuilder;
3787    use serde_json::json;
3788    use settings::SettingsStore;
3789    use util::path;
3790    use workspace::CollaboratorId;
3791
3792    #[gpui::test]
3793    async fn test_agent_is_unfollowed_after_cancelling_completion(cx: &mut TestAppContext) {
3794        init_test_settings(cx);
3795
3796        let project = create_test_project(
3797            cx,
3798            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
3799        )
3800        .await;
3801
3802        let (cx, _active_thread, workspace, thread, model) =
3803            setup_test_environment(cx, project.clone()).await;
3804
3805        // Insert user message without any context (empty context vector)
3806        thread.update(cx, |thread, cx| {
3807            thread.insert_user_message(
3808                "What is the best way to learn Rust?",
3809                ContextLoadResult::default(),
3810                None,
3811                vec![],
3812                cx,
3813            );
3814        });
3815
3816        // Stream response to user message
3817        thread.update(cx, |thread, cx| {
3818            let intent = CompletionIntent::UserPrompt;
3819            let request = thread.to_completion_request(model.clone(), intent, cx);
3820            thread.stream_completion(request, model, intent, cx.active_window(), cx)
3821        });
3822        // Follow the agent
3823        cx.update(|window, cx| {
3824            workspace.update(cx, |workspace, cx| {
3825                workspace.follow(CollaboratorId::Agent, window, cx);
3826            })
3827        });
3828        assert!(cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3829
3830        // Cancel the current completion
3831        thread.update(cx, |thread, cx| {
3832            thread.cancel_last_completion(cx.active_window(), cx)
3833        });
3834
3835        cx.executor().run_until_parked();
3836
3837        // No longer following the agent
3838        assert!(!cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3839    }
3840
3841    #[gpui::test]
3842    async fn test_reinserting_creases_for_edited_message(cx: &mut TestAppContext) {
3843        init_test_settings(cx);
3844
3845        let project = create_test_project(cx, json!({})).await;
3846
3847        let (cx, active_thread, _, thread, model) =
3848            setup_test_environment(cx, project.clone()).await;
3849        cx.update(|_, cx| {
3850            LanguageModelRegistry::global(cx).update(cx, |registry, cx| {
3851                registry.set_default_model(
3852                    Some(ConfiguredModel {
3853                        provider: Arc::new(FakeLanguageModelProvider::default()),
3854                        model,
3855                    }),
3856                    cx,
3857                );
3858            });
3859        });
3860
3861        let creases = vec![MessageCrease {
3862            range: 14..22,
3863            icon_path: "icon".into(),
3864            label: "foo.txt".into(),
3865            context: None,
3866        }];
3867
3868        let message = thread.update(cx, |thread, cx| {
3869            let message_id = thread.insert_user_message(
3870                "Tell me about @foo.txt",
3871                ContextLoadResult::default(),
3872                None,
3873                creases,
3874                cx,
3875            );
3876            thread.message(message_id).cloned().unwrap()
3877        });
3878
3879        active_thread.update_in(cx, |active_thread, window, cx| {
3880            if let Some(message_text) = message.segments.first().and_then(MessageSegment::text) {
3881                active_thread.start_editing_message(
3882                    message.id,
3883                    message_text,
3884                    message.creases.as_slice(),
3885                    window,
3886                    cx,
3887                );
3888            }
3889            let editor = active_thread
3890                .editing_message
3891                .as_ref()
3892                .unwrap()
3893                .1
3894                .editor
3895                .clone();
3896            editor.update(cx, |editor, cx| editor.edit([(0..13, "modified")], cx));
3897            active_thread.confirm_editing_message(&Default::default(), window, cx);
3898        });
3899        cx.run_until_parked();
3900
3901        let message = thread.update(cx, |thread, _| thread.message(message.id).cloned().unwrap());
3902        active_thread.update_in(cx, |active_thread, window, cx| {
3903            if let Some(message_text) = message.segments.first().and_then(MessageSegment::text) {
3904                active_thread.start_editing_message(
3905                    message.id,
3906                    message_text,
3907                    message.creases.as_slice(),
3908                    window,
3909                    cx,
3910                );
3911            }
3912            let editor = active_thread
3913                .editing_message
3914                .as_ref()
3915                .unwrap()
3916                .1
3917                .editor
3918                .clone();
3919            let text = editor.update(cx, |editor, cx| editor.text(cx));
3920            assert_eq!(text, "modified @foo.txt");
3921        });
3922    }
3923
3924    #[gpui::test]
3925    async fn test_editing_message_cancels_previous_completion(cx: &mut TestAppContext) {
3926        init_test_settings(cx);
3927
3928        let project = create_test_project(cx, json!({})).await;
3929
3930        let (cx, active_thread, _, thread, model) =
3931            setup_test_environment(cx, project.clone()).await;
3932
3933        cx.update(|_, cx| {
3934            LanguageModelRegistry::global(cx).update(cx, |registry, cx| {
3935                registry.set_default_model(
3936                    Some(ConfiguredModel {
3937                        provider: Arc::new(FakeLanguageModelProvider::default()),
3938                        model: model.clone(),
3939                    }),
3940                    cx,
3941                );
3942            });
3943        });
3944
3945        // Track thread events to verify cancellation
3946        let cancellation_events = Arc::new(std::sync::Mutex::new(Vec::new()));
3947        let new_request_events = Arc::new(std::sync::Mutex::new(Vec::new()));
3948
3949        let _subscription = cx.update(|_, cx| {
3950            let cancellation_events = cancellation_events.clone();
3951            let new_request_events = new_request_events.clone();
3952            cx.subscribe(
3953                &thread,
3954                move |_thread, event: &ThreadEvent, _cx| match event {
3955                    ThreadEvent::CompletionCanceled => {
3956                        cancellation_events.lock().unwrap().push(());
3957                    }
3958                    ThreadEvent::NewRequest => {
3959                        new_request_events.lock().unwrap().push(());
3960                    }
3961                    _ => {}
3962                },
3963            )
3964        });
3965
3966        // Insert a user message and start streaming a response
3967        let message = thread.update(cx, |thread, cx| {
3968            let message_id = thread.insert_user_message(
3969                "Hello, how are you?",
3970                ContextLoadResult::default(),
3971                None,
3972                vec![],
3973                cx,
3974            );
3975            thread.advance_prompt_id();
3976            thread.send_to_model(
3977                model.clone(),
3978                CompletionIntent::UserPrompt,
3979                cx.active_window(),
3980                cx,
3981            );
3982            thread.message(message_id).cloned().unwrap()
3983        });
3984
3985        cx.run_until_parked();
3986
3987        // Verify that a completion is in progress
3988        assert!(cx.read(|cx| thread.read(cx).is_generating()));
3989        assert_eq!(new_request_events.lock().unwrap().len(), 1);
3990
3991        // Edit the message while the completion is still running
3992        active_thread.update_in(cx, |active_thread, window, cx| {
3993            if let Some(message_text) = message.segments.first().and_then(MessageSegment::text) {
3994                active_thread.start_editing_message(
3995                    message.id,
3996                    message_text,
3997                    message.creases.as_slice(),
3998                    window,
3999                    cx,
4000                );
4001            }
4002            let editor = active_thread
4003                .editing_message
4004                .as_ref()
4005                .unwrap()
4006                .1
4007                .editor
4008                .clone();
4009            editor.update(cx, |editor, cx| {
4010                editor.set_text("What is the weather like?", window, cx);
4011            });
4012            active_thread.confirm_editing_message(&Default::default(), window, cx);
4013        });
4014
4015        cx.run_until_parked();
4016
4017        // Verify that the previous completion was canceled
4018        assert_eq!(cancellation_events.lock().unwrap().len(), 1);
4019
4020        // Verify that a new request was started after cancellation
4021        assert_eq!(new_request_events.lock().unwrap().len(), 2);
4022
4023        // Verify that the edited message contains the new text
4024        let edited_message =
4025            thread.update(cx, |thread, _| thread.message(message.id).cloned().unwrap());
4026        match &edited_message.segments[0] {
4027            MessageSegment::Text(text) => {
4028                assert_eq!(text, "What is the weather like?");
4029            }
4030            _ => panic!("Expected text segment"),
4031        }
4032    }
4033
4034    fn init_test_settings(cx: &mut TestAppContext) {
4035        cx.update(|cx| {
4036            let settings_store = SettingsStore::test(cx);
4037            cx.set_global(settings_store);
4038            language::init(cx);
4039            Project::init_settings(cx);
4040            AgentSettings::register(cx);
4041            prompt_store::init(cx);
4042            thread_store::init(cx);
4043            workspace::init_settings(cx);
4044            language_model::init_settings(cx);
4045            ThemeSettings::register(cx);
4046            EditorSettings::register(cx);
4047            ToolRegistry::default_global(cx);
4048        });
4049    }
4050
4051    // Helper to create a test project with test files
4052    async fn create_test_project(
4053        cx: &mut TestAppContext,
4054        files: serde_json::Value,
4055    ) -> Entity<Project> {
4056        let fs = FakeFs::new(cx.executor());
4057        fs.insert_tree(path!("/test"), files).await;
4058        Project::test(fs, [path!("/test").as_ref()], cx).await
4059    }
4060
4061    async fn setup_test_environment(
4062        cx: &mut TestAppContext,
4063        project: Entity<Project>,
4064    ) -> (
4065        &mut VisualTestContext,
4066        Entity<ActiveThread>,
4067        Entity<Workspace>,
4068        Entity<Thread>,
4069        Arc<dyn LanguageModel>,
4070    ) {
4071        let (workspace, cx) =
4072            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
4073
4074        let thread_store = cx
4075            .update(|_, cx| {
4076                ThreadStore::load(
4077                    project.clone(),
4078                    cx.new(|_| ToolWorkingSet::default()),
4079                    None,
4080                    Arc::new(PromptBuilder::new(None).unwrap()),
4081                    cx,
4082                )
4083            })
4084            .await
4085            .unwrap();
4086
4087        let text_thread_store = cx
4088            .update(|_, cx| {
4089                TextThreadStore::new(
4090                    project.clone(),
4091                    Arc::new(PromptBuilder::new(None).unwrap()),
4092                    Default::default(),
4093                    cx,
4094                )
4095            })
4096            .await
4097            .unwrap();
4098
4099        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
4100        let context_store =
4101            cx.new(|_cx| ContextStore::new(project.downgrade(), Some(thread_store.downgrade())));
4102
4103        let model = FakeLanguageModel::default();
4104        let model: Arc<dyn LanguageModel> = Arc::new(model);
4105
4106        let language_registry = LanguageRegistry::new(cx.executor());
4107        let language_registry = Arc::new(language_registry);
4108
4109        let active_thread = cx.update(|window, cx| {
4110            cx.new(|cx| {
4111                ActiveThread::new(
4112                    thread.clone(),
4113                    thread_store.clone(),
4114                    text_thread_store,
4115                    context_store.clone(),
4116                    language_registry.clone(),
4117                    workspace.downgrade(),
4118                    window,
4119                    cx,
4120                )
4121            })
4122        });
4123
4124        (cx, active_thread, workspace, thread, model)
4125    }
4126}