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