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        let edited_text = state.editor.read(cx).text(cx);
1599
1600        let creases = state.editor.update(cx, extract_message_creases);
1601
1602        let new_context = self
1603            .context_store
1604            .read(cx)
1605            .new_context_for_thread(self.thread.read(cx), Some(message_id));
1606
1607        let project = self.thread.read(cx).project().clone();
1608        let prompt_store = self.thread_store.read(cx).prompt_store().clone();
1609
1610        let git_store = project.read(cx).git_store().clone();
1611        let checkpoint = git_store.update(cx, |git_store, cx| git_store.checkpoint(cx));
1612
1613        let load_context_task = context::load_context(new_context, &project, &prompt_store, cx);
1614        self._load_edited_message_context_task =
1615            Some(cx.spawn_in(window, async move |this, cx| {
1616                let (context, checkpoint) =
1617                    futures::future::join(load_context_task, checkpoint).await;
1618                let _ = this
1619                    .update_in(cx, |this, window, cx| {
1620                        this.thread.update(cx, |thread, cx| {
1621                            thread.edit_message(
1622                                message_id,
1623                                Role::User,
1624                                vec![MessageSegment::Text(edited_text)],
1625                                creases,
1626                                Some(context.loaded_context),
1627                                checkpoint.ok(),
1628                                cx,
1629                            );
1630                            for message_id in this.messages_after(message_id) {
1631                                thread.delete_message(*message_id, cx);
1632                            }
1633                        });
1634
1635                        this.thread.update(cx, |thread, cx| {
1636                            thread.advance_prompt_id();
1637                            thread.cancel_last_completion(Some(window.window_handle()), cx);
1638                            thread.send_to_model(
1639                                model.model,
1640                                CompletionIntent::UserPrompt,
1641                                Some(window.window_handle()),
1642                                cx,
1643                            );
1644                        });
1645                        this._load_edited_message_context_task = None;
1646                        cx.notify();
1647                    })
1648                    .log_err();
1649            }));
1650
1651        if let Some(workspace) = self.workspace.upgrade() {
1652            workspace.update(cx, |workspace, cx| {
1653                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
1654                    panel.focus_handle(cx).focus(window);
1655                }
1656            });
1657        }
1658    }
1659
1660    fn messages_after(&self, message_id: MessageId) -> &[MessageId] {
1661        self.messages
1662            .iter()
1663            .position(|id| *id == message_id)
1664            .map(|index| &self.messages[index + 1..])
1665            .unwrap_or(&[])
1666    }
1667
1668    fn handle_cancel_click(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
1669        self.cancel_editing_message(&menu::Cancel, window, cx);
1670    }
1671
1672    fn handle_regenerate_click(
1673        &mut self,
1674        _: &ClickEvent,
1675        window: &mut Window,
1676        cx: &mut Context<Self>,
1677    ) {
1678        self.confirm_editing_message(&menu::Confirm, window, cx);
1679    }
1680
1681    fn handle_feedback_click(
1682        &mut self,
1683        message_id: MessageId,
1684        feedback: ThreadFeedback,
1685        window: &mut Window,
1686        cx: &mut Context<Self>,
1687    ) {
1688        let report = self.thread.update(cx, |thread, cx| {
1689            thread.report_message_feedback(message_id, feedback, cx)
1690        });
1691
1692        cx.spawn(async move |this, cx| {
1693            report.await?;
1694            this.update(cx, |_this, cx| cx.notify())
1695        })
1696        .detach_and_log_err(cx);
1697
1698        match feedback {
1699            ThreadFeedback::Positive => {
1700                self.open_feedback_editors.remove(&message_id);
1701            }
1702            ThreadFeedback::Negative => {
1703                self.handle_show_feedback_comments(message_id, window, cx);
1704            }
1705        }
1706    }
1707
1708    fn handle_show_feedback_comments(
1709        &mut self,
1710        message_id: MessageId,
1711        window: &mut Window,
1712        cx: &mut Context<Self>,
1713    ) {
1714        let buffer = cx.new(|cx| {
1715            let empty_string = String::new();
1716            MultiBuffer::singleton(cx.new(|cx| Buffer::local(empty_string, cx)), cx)
1717        });
1718
1719        let editor = cx.new(|cx| {
1720            let mut editor = Editor::new(
1721                editor::EditorMode::AutoHeight {
1722                    min_lines: 1,
1723                    max_lines: Some(4),
1724                },
1725                buffer,
1726                None,
1727                window,
1728                cx,
1729            );
1730            editor.set_placeholder_text(
1731                "What went wrong? Share your feedback so we can improve.",
1732                cx,
1733            );
1734            editor
1735        });
1736
1737        editor.read(cx).focus_handle(cx).focus(window);
1738        self.open_feedback_editors.insert(message_id, editor);
1739        cx.notify();
1740    }
1741
1742    fn submit_feedback_message(&mut self, message_id: MessageId, cx: &mut Context<Self>) {
1743        let Some(editor) = self.open_feedback_editors.get(&message_id) else {
1744            return;
1745        };
1746
1747        let report_task = self.thread.update(cx, |thread, cx| {
1748            thread.report_message_feedback(message_id, ThreadFeedback::Negative, cx)
1749        });
1750
1751        let comments = editor.read(cx).text(cx);
1752        if !comments.is_empty() {
1753            let thread_id = self.thread.read(cx).id().clone();
1754            let comments_value = String::from(comments.as_str());
1755
1756            let message_content = self
1757                .thread
1758                .read(cx)
1759                .message(message_id)
1760                .map(|msg| msg.to_message_content())
1761                .unwrap_or_default();
1762
1763            telemetry::event!(
1764                "Assistant Thread Feedback Comments",
1765                thread_id,
1766                message_id = message_id.as_usize(),
1767                message_content,
1768                comments = comments_value
1769            );
1770
1771            self.open_feedback_editors.remove(&message_id);
1772
1773            cx.spawn(async move |this, cx| {
1774                report_task.await?;
1775                this.update(cx, |_this, cx| cx.notify())
1776            })
1777            .detach_and_log_err(cx);
1778        }
1779    }
1780
1781    fn render_edit_message_editor(
1782        &self,
1783        state: &EditingMessageState,
1784        _window: &mut Window,
1785        cx: &Context<Self>,
1786    ) -> impl IntoElement {
1787        let settings = ThemeSettings::get_global(cx);
1788        let font_size = TextSize::Small
1789            .rems(cx)
1790            .to_pixels(settings.agent_font_size(cx));
1791        let line_height = font_size * 1.75;
1792
1793        let colors = cx.theme().colors();
1794
1795        let text_style = TextStyle {
1796            color: colors.text,
1797            font_family: settings.buffer_font.family.clone(),
1798            font_fallbacks: settings.buffer_font.fallbacks.clone(),
1799            font_features: settings.buffer_font.features.clone(),
1800            font_size: font_size.into(),
1801            line_height: line_height.into(),
1802            ..Default::default()
1803        };
1804
1805        v_flex()
1806            .key_context("EditMessageEditor")
1807            .on_action(cx.listener(Self::toggle_context_picker))
1808            .on_action(cx.listener(Self::remove_all_context))
1809            .on_action(cx.listener(Self::move_up))
1810            .on_action(cx.listener(Self::cancel_editing_message))
1811            .on_action(cx.listener(Self::confirm_editing_message))
1812            .capture_action(cx.listener(Self::paste))
1813            .min_h_6()
1814            .w_full()
1815            .flex_grow()
1816            .gap_2()
1817            .child(state.context_strip.clone())
1818            .child(div().pt(px(-3.)).px_neg_0p5().child(EditorElement::new(
1819                &state.editor,
1820                EditorStyle {
1821                    background: colors.editor_background,
1822                    local_player: cx.theme().players().local(),
1823                    text: text_style,
1824                    syntax: cx.theme().syntax().clone(),
1825                    ..Default::default()
1826                },
1827            )))
1828    }
1829
1830    fn render_message(
1831        &mut self,
1832        ix: usize,
1833        window: &mut Window,
1834        cx: &mut Context<Self>,
1835    ) -> AnyElement {
1836        let message_id = self.messages[ix];
1837        let workspace = self.workspace.clone();
1838        let thread = self.thread.read(cx);
1839
1840        let is_first_message = ix == 0;
1841        let is_last_message = ix == self.messages.len() - 1;
1842
1843        let Some(message) = thread.message(message_id) else {
1844            return Empty.into_any();
1845        };
1846
1847        let is_generating = thread.is_generating();
1848        let is_generating_stale = thread.is_generation_stale().unwrap_or(false);
1849
1850        let loading_dots = (is_generating && is_last_message).then(|| {
1851            h_flex()
1852                .h_8()
1853                .my_3()
1854                .mx_5()
1855                .when(is_generating_stale || message.is_hidden, |this| {
1856                    this.child(LoadingLabel::new("").size(LabelSize::Small))
1857                })
1858        });
1859
1860        if message.is_hidden {
1861            return div().children(loading_dots).into_any();
1862        }
1863
1864        let Some(rendered_message) = self.rendered_messages_by_id.get(&message_id) else {
1865            return Empty.into_any();
1866        };
1867
1868        // Get all the data we need from thread before we start using it in closures
1869        let checkpoint = thread.checkpoint_for_message(message_id);
1870        let configured_model = thread.configured_model().map(|m| m.model);
1871        let added_context = thread
1872            .context_for_message(message_id)
1873            .map(|context| AddedContext::new_attached(context, configured_model.as_ref(), cx))
1874            .collect::<Vec<_>>();
1875
1876        let tool_uses = thread.tool_uses_for_message(message_id, cx);
1877        let has_tool_uses = !tool_uses.is_empty();
1878
1879        let editing_message_state = self
1880            .editing_message
1881            .as_ref()
1882            .filter(|(id, _)| *id == message_id)
1883            .map(|(_, state)| state);
1884
1885        let (editor_bg_color, panel_bg) = {
1886            let colors = cx.theme().colors();
1887            (colors.editor_background, colors.panel_background)
1888        };
1889
1890        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileMarkdown)
1891            .shape(ui::IconButtonShape::Square)
1892            .icon_size(IconSize::Small)
1893            .icon_color(Color::Ignored)
1894            .tooltip(Tooltip::text("Open Thread as Markdown"))
1895            .on_click({
1896                let thread = self.thread.clone();
1897                let workspace = self.workspace.clone();
1898                move |_, window, cx| {
1899                    if let Some(workspace) = workspace.upgrade() {
1900                        open_active_thread_as_markdown(thread.clone(), workspace, window, cx)
1901                            .detach_and_log_err(cx);
1902                    }
1903                }
1904            });
1905
1906        let scroll_to_top = IconButton::new(("scroll_to_top", ix), IconName::ArrowUp)
1907            .shape(ui::IconButtonShape::Square)
1908            .icon_size(IconSize::Small)
1909            .icon_color(Color::Ignored)
1910            .tooltip(Tooltip::text("Scroll To Top"))
1911            .on_click(cx.listener(move |this, _, _, cx| {
1912                this.scroll_to_top(cx);
1913            }));
1914
1915        let show_feedback = thread.is_turn_end(ix);
1916        let feedback_container = h_flex()
1917            .group("feedback_container")
1918            .mt_1()
1919            .py_2()
1920            .px(RESPONSE_PADDING_X)
1921            .mr_1()
1922            .gap_1()
1923            .opacity(0.4)
1924            .hover(|style| style.opacity(1.))
1925            .gap_1p5()
1926            .flex_wrap()
1927            .justify_end();
1928        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
1929            Some(feedback) => feedback_container
1930                .child(
1931                    div().visible_on_hover("feedback_container").child(
1932                        Label::new(match feedback {
1933                            ThreadFeedback::Positive => "Thanks for your feedback!",
1934                            ThreadFeedback::Negative => {
1935                                "We appreciate your feedback and will use it to improve."
1936                            }
1937                        })
1938                    .color(Color::Muted)
1939                    .size(LabelSize::XSmall)
1940                    .truncate())
1941                )
1942                .child(
1943                    h_flex()
1944                        .child(
1945                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1946                                .shape(ui::IconButtonShape::Square)
1947                                .icon_size(IconSize::Small)
1948                                .icon_color(match feedback {
1949                                    ThreadFeedback::Positive => Color::Accent,
1950                                    ThreadFeedback::Negative => Color::Ignored,
1951                                })
1952                                .tooltip(Tooltip::text("Helpful Response"))
1953                                .on_click(cx.listener(move |this, _, window, cx| {
1954                                    this.handle_feedback_click(
1955                                        message_id,
1956                                        ThreadFeedback::Positive,
1957                                        window,
1958                                        cx,
1959                                    );
1960                                })),
1961                        )
1962                        .child(
1963                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
1964                                .shape(ui::IconButtonShape::Square)
1965                                .icon_size(IconSize::Small)
1966                                .icon_color(match feedback {
1967                                    ThreadFeedback::Positive => Color::Ignored,
1968                                    ThreadFeedback::Negative => Color::Accent,
1969                                })
1970                                .tooltip(Tooltip::text("Not Helpful"))
1971                                .on_click(cx.listener(move |this, _, window, cx| {
1972                                    this.handle_feedback_click(
1973                                        message_id,
1974                                        ThreadFeedback::Negative,
1975                                        window,
1976                                        cx,
1977                                    );
1978                                })),
1979                        )
1980                        .child(open_as_markdown),
1981                )
1982                .into_any_element(),
1983            None if AgentSettings::get_global(cx).enable_feedback =>
1984                feedback_container
1985                .child(
1986                    div().visible_on_hover("feedback_container").child(
1987                        Label::new(
1988                            "Rating the thread sends all of your current conversation to the Zed team.",
1989                        )
1990                        .color(Color::Muted)
1991                    .size(LabelSize::XSmall)
1992                    .truncate())
1993                )
1994                .child(
1995                    h_flex()
1996                        .child(
1997                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
1998                                .shape(ui::IconButtonShape::Square)
1999                                .icon_size(IconSize::Small)
2000                                .icon_color(Color::Ignored)
2001                                .tooltip(Tooltip::text("Helpful Response"))
2002                                .on_click(cx.listener(move |this, _, window, cx| {
2003                                    this.handle_feedback_click(
2004                                        message_id,
2005                                        ThreadFeedback::Positive,
2006                                        window,
2007                                        cx,
2008                                    );
2009                                })),
2010                        )
2011                        .child(
2012                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
2013                                .shape(ui::IconButtonShape::Square)
2014                                .icon_size(IconSize::Small)
2015                                .icon_color(Color::Ignored)
2016                                .tooltip(Tooltip::text("Not Helpful"))
2017                                .on_click(cx.listener(move |this, _, window, cx| {
2018                                    this.handle_feedback_click(
2019                                        message_id,
2020                                        ThreadFeedback::Negative,
2021                                        window,
2022                                        cx,
2023                                    );
2024                                })),
2025                        )
2026                        .child(open_as_markdown)
2027                        .child(scroll_to_top),
2028                )
2029                .into_any_element(),
2030            None => feedback_container
2031                .child(h_flex()
2032                    .child(open_as_markdown))
2033                    .child(scroll_to_top)
2034                .into_any_element(),
2035        };
2036
2037        let message_is_empty = message.should_display_content();
2038        let has_content = !message_is_empty || !added_context.is_empty();
2039
2040        let message_content = has_content.then(|| {
2041            if let Some(state) = editing_message_state.as_ref() {
2042                self.render_edit_message_editor(state, window, cx)
2043                    .into_any_element()
2044            } else {
2045                v_flex()
2046                    .w_full()
2047                    .gap_1()
2048                    .when(!added_context.is_empty(), |parent| {
2049                        parent.child(h_flex().flex_wrap().gap_1().children(
2050                            added_context.into_iter().map(|added_context| {
2051                                let context = added_context.handle.clone();
2052                                ContextPill::added(added_context, false, false, None).on_click(
2053                                    Rc::new(cx.listener({
2054                                        let workspace = workspace.clone();
2055                                        move |_, _, window, cx| {
2056                                            if let Some(workspace) = workspace.upgrade() {
2057                                                open_context(&context, workspace, window, cx);
2058                                                cx.notify();
2059                                            }
2060                                        }
2061                                    })),
2062                                )
2063                            }),
2064                        ))
2065                    })
2066                    .when(!message_is_empty, |parent| {
2067                        parent.child(div().pt_0p5().min_h_6().child(self.render_message_content(
2068                            message_id,
2069                            rendered_message,
2070                            has_tool_uses,
2071                            workspace.clone(),
2072                            window,
2073                            cx,
2074                        )))
2075                    })
2076                    .into_any_element()
2077            }
2078        });
2079
2080        let styled_message = if message.ui_only {
2081            self.render_ui_notification(message_content, ix, cx)
2082        } else {
2083            match message.role {
2084                Role::User => {
2085                    let colors = cx.theme().colors();
2086                    v_flex()
2087                        .id(("message-container", ix))
2088                        .pt_2()
2089                        .pl_2()
2090                        .pr_2p5()
2091                        .pb_4()
2092                        .child(
2093                            v_flex()
2094                                .id(("user-message", ix))
2095                                .bg(editor_bg_color)
2096                                .rounded_lg()
2097                                .shadow_md()
2098                                .border_1()
2099                                .border_color(colors.border)
2100                                .hover(|hover| hover.border_color(colors.text_accent.opacity(0.5)))
2101                                .child(
2102                                    v_flex()
2103                                        .p_2p5()
2104                                        .gap_1()
2105                                        .children(message_content)
2106                                        .when_some(editing_message_state, |this, state| {
2107                                            let focus_handle = state.editor.focus_handle(cx);
2108
2109                                            this.child(
2110                                                h_flex()
2111                                                    .w_full()
2112                                                    .gap_1()
2113                                                    .justify_between()
2114                                                    .flex_wrap()
2115                                                    .child(
2116                                                        h_flex()
2117                                                            .gap_1p5()
2118                                                            .child(
2119                                                                div()
2120                                                                    .opacity(0.8)
2121                                                                    .child(
2122                                                                        Icon::new(IconName::Warning)
2123                                                                            .size(IconSize::Indicator)
2124                                                                            .color(Color::Warning)
2125                                                                    ),
2126                                                            )
2127                                                            .child(
2128                                                                Label::new("Editing will restart the thread from this point.")
2129                                                                    .color(Color::Muted)
2130                                                                    .size(LabelSize::XSmall),
2131                                                            ),
2132                                                    )
2133                                                    .child(
2134                                                        h_flex()
2135                                                            .gap_0p5()
2136                                                            .child(
2137                                                                IconButton::new(
2138                                                                    "cancel-edit-message",
2139                                                                    IconName::Close,
2140                                                                )
2141                                                                .shape(ui::IconButtonShape::Square)
2142                                                                .icon_color(Color::Error)
2143                                                                .icon_size(IconSize::Small)
2144                                                                .tooltip({
2145                                                                    let focus_handle = focus_handle.clone();
2146                                                                    move |window, cx| {
2147                                                                        Tooltip::for_action_in(
2148                                                                            "Cancel Edit",
2149                                                                            &menu::Cancel,
2150                                                                            &focus_handle,
2151                                                                            window,
2152                                                                            cx,
2153                                                                        )
2154                                                                    }
2155                                                                })
2156                                                                .on_click(cx.listener(Self::handle_cancel_click)),
2157                                                            )
2158                                                            .child(
2159                                                                IconButton::new(
2160                                                                    "confirm-edit-message",
2161                                                                    IconName::Return,
2162                                                                )
2163                                                                .disabled(state.editor.read(cx).is_empty(cx))
2164                                                                .shape(ui::IconButtonShape::Square)
2165                                                                .icon_color(Color::Muted)
2166                                                                .icon_size(IconSize::Small)
2167                                                                .tooltip({
2168                                                                    move |window, cx| {
2169                                                                        Tooltip::for_action_in(
2170                                                                            "Regenerate",
2171                                                                            &menu::Confirm,
2172                                                                            &focus_handle,
2173                                                                            window,
2174                                                                            cx,
2175                                                                        )
2176                                                                    }
2177                                                                })
2178                                                                .on_click(
2179                                                                    cx.listener(Self::handle_regenerate_click),
2180                                                                ),
2181                                                            ),
2182                                                    )
2183                                            )
2184                                        }),
2185                                )
2186                                .on_click(cx.listener({
2187                                    let message_creases = message.creases.clone();
2188                                    move |this, _, window, cx| {
2189                                        if let Some(message_text) =
2190                                            this.thread.read(cx).message(message_id).and_then(|message| {
2191                                                message.segments.first().and_then(|segment| {
2192                                                    match segment {
2193                                                        MessageSegment::Text(message_text) => {
2194                                                            Some(Into::<Arc<str>>::into(message_text.as_str()))
2195                                                        }
2196                                                        _ => {
2197                                                            None
2198                                                        }
2199                                                    }
2200                                                })
2201                                            })
2202                                        {
2203                                            this.start_editing_message(
2204                                                message_id,
2205                                                message_text,
2206                                                &message_creases,
2207                                                window,
2208                                                cx,
2209                                            );
2210                                        }
2211                                    }
2212                                })),
2213                        )
2214                }
2215                Role::Assistant => v_flex()
2216                    .id(("message-container", ix))
2217                    .px(RESPONSE_PADDING_X)
2218                    .gap_2()
2219                    .children(message_content)
2220                    .when(has_tool_uses, |parent| {
2221                        parent.children(tool_uses.into_iter().map(|tool_use| {
2222                            self.render_tool_use(tool_use, window, workspace.clone(), cx)
2223                        }))
2224                    }),
2225                Role::System => {
2226                    let colors = cx.theme().colors();
2227                    div().id(("message-container", ix)).py_1().px_2().child(
2228                        v_flex()
2229                            .bg(colors.editor_background)
2230                            .rounded_sm()
2231                            .child(div().p_4().children(message_content)),
2232                    )
2233                }
2234            }
2235        };
2236
2237        let after_editing_message = self
2238            .editing_message
2239            .as_ref()
2240            .is_some_and(|(editing_message_id, _)| message_id > *editing_message_id);
2241
2242        let backdrop = div()
2243            .id(("backdrop", ix))
2244            .size_full()
2245            .absolute()
2246            .inset_0()
2247            .bg(panel_bg)
2248            .opacity(0.8)
2249            .block_mouse_except_scroll()
2250            .on_click(cx.listener(Self::handle_cancel_click));
2251
2252        v_flex()
2253            .w_full()
2254            .map(|parent| {
2255                if let Some(checkpoint) = checkpoint.filter(|_| !is_generating) {
2256                    let mut is_pending = false;
2257                    let mut error = None;
2258                    if let Some(last_restore_checkpoint) =
2259                        self.thread.read(cx).last_restore_checkpoint()
2260                        && last_restore_checkpoint.message_id() == message_id
2261                    {
2262                        match last_restore_checkpoint {
2263                            LastRestoreCheckpoint::Pending { .. } => is_pending = true,
2264                            LastRestoreCheckpoint::Error { error: err, .. } => {
2265                                error = Some(err.clone());
2266                            }
2267                        }
2268                    }
2269
2270                    let restore_checkpoint_button =
2271                        Button::new(("restore-checkpoint", ix), "Restore Checkpoint")
2272                            .icon(if error.is_some() {
2273                                IconName::XCircle
2274                            } else {
2275                                IconName::Undo
2276                            })
2277                            .icon_size(IconSize::XSmall)
2278                            .icon_position(IconPosition::Start)
2279                            .icon_color(if error.is_some() {
2280                                Some(Color::Error)
2281                            } else {
2282                                None
2283                            })
2284                            .label_size(LabelSize::XSmall)
2285                            .disabled(is_pending)
2286                            .on_click(cx.listener(move |this, _, _window, cx| {
2287                                this.thread.update(cx, |thread, cx| {
2288                                    thread
2289                                        .restore_checkpoint(checkpoint.clone(), cx)
2290                                        .detach_and_log_err(cx);
2291                                });
2292                            }));
2293
2294                    let restore_checkpoint_button = if is_pending {
2295                        restore_checkpoint_button
2296                            .with_animation(
2297                                ("pulsating-restore-checkpoint-button", ix),
2298                                Animation::new(Duration::from_secs(2))
2299                                    .repeat()
2300                                    .with_easing(pulsating_between(0.6, 1.)),
2301                                |label, delta| label.alpha(delta),
2302                            )
2303                            .into_any_element()
2304                    } else if let Some(error) = error {
2305                        restore_checkpoint_button
2306                            .tooltip(Tooltip::text(error))
2307                            .into_any_element()
2308                    } else {
2309                        restore_checkpoint_button.into_any_element()
2310                    };
2311
2312                    parent.child(
2313                        h_flex()
2314                            .pt_2p5()
2315                            .px_2p5()
2316                            .w_full()
2317                            .gap_1()
2318                            .child(ui::Divider::horizontal())
2319                            .child(restore_checkpoint_button)
2320                            .child(ui::Divider::horizontal()),
2321                    )
2322                } else {
2323                    parent
2324                }
2325            })
2326            .when(is_first_message, |parent| {
2327                parent.child(self.render_rules_item(cx))
2328            })
2329            .child(styled_message)
2330            .children(loading_dots)
2331            .when(show_feedback, move |parent| {
2332                parent.child(feedback_items).when_some(
2333                    self.open_feedback_editors.get(&message_id),
2334                    move |parent, feedback_editor| {
2335                        let focus_handle = feedback_editor.focus_handle(cx);
2336                        parent.child(
2337                            v_flex()
2338                                .key_context("AgentFeedbackMessageEditor")
2339                                .on_action(cx.listener(move |this, _: &menu::Cancel, _, cx| {
2340                                    this.open_feedback_editors.remove(&message_id);
2341                                    cx.notify();
2342                                }))
2343                                .on_action(cx.listener(move |this, _: &menu::Confirm, _, cx| {
2344                                    this.submit_feedback_message(message_id, cx);
2345                                    cx.notify();
2346                                }))
2347                                .mb_2()
2348                                .mx_4()
2349                                .p_2()
2350                                .rounded_md()
2351                                .border_1()
2352                                .border_color(cx.theme().colors().border)
2353                                .bg(cx.theme().colors().editor_background)
2354                                .child(feedback_editor.clone())
2355                                .child(
2356                                    h_flex()
2357                                        .gap_1()
2358                                        .justify_end()
2359                                        .child(
2360                                            Button::new("dismiss-feedback-message", "Cancel")
2361                                                .label_size(LabelSize::Small)
2362                                                .key_binding(
2363                                                    KeyBinding::for_action_in(
2364                                                        &menu::Cancel,
2365                                                        &focus_handle,
2366                                                        window,
2367                                                        cx,
2368                                                    )
2369                                                    .map(|kb| kb.size(rems_from_px(10.))),
2370                                                )
2371                                                .on_click(cx.listener(
2372                                                    move |this, _, _window, cx| {
2373                                                        this.open_feedback_editors
2374                                                            .remove(&message_id);
2375                                                        cx.notify();
2376                                                    },
2377                                                )),
2378                                        )
2379                                        .child(
2380                                            Button::new(
2381                                                "submit-feedback-message",
2382                                                "Share Feedback",
2383                                            )
2384                                            .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2385                                            .label_size(LabelSize::Small)
2386                                            .key_binding(
2387                                                KeyBinding::for_action_in(
2388                                                    &menu::Confirm,
2389                                                    &focus_handle,
2390                                                    window,
2391                                                    cx,
2392                                                )
2393                                                .map(|kb| kb.size(rems_from_px(10.))),
2394                                            )
2395                                            .on_click(
2396                                                cx.listener(move |this, _, _window, cx| {
2397                                                    this.submit_feedback_message(message_id, cx);
2398                                                    cx.notify()
2399                                                }),
2400                                            ),
2401                                        ),
2402                                ),
2403                        )
2404                    },
2405                )
2406            })
2407            .when(after_editing_message, |parent| {
2408                // Backdrop to dim out the whole thread below the editing user message
2409                parent.relative().child(backdrop)
2410            })
2411            .into_any()
2412    }
2413
2414    fn render_message_content(
2415        &self,
2416        message_id: MessageId,
2417        rendered_message: &RenderedMessage,
2418        has_tool_uses: bool,
2419        workspace: WeakEntity<Workspace>,
2420        window: &Window,
2421        cx: &Context<Self>,
2422    ) -> impl IntoElement {
2423        let is_last_message = self.messages.last() == Some(&message_id);
2424        let is_generating = self.thread.read(cx).is_generating();
2425        let pending_thinking_segment_index = if is_generating && is_last_message && !has_tool_uses {
2426            rendered_message
2427                .segments
2428                .iter()
2429                .enumerate()
2430                .next_back()
2431                .filter(|(_, segment)| matches!(segment, RenderedMessageSegment::Thinking { .. }))
2432                .map(|(index, _)| index)
2433        } else {
2434            None
2435        };
2436
2437        let message_role = self
2438            .thread
2439            .read(cx)
2440            .message(message_id)
2441            .map(|m| m.role)
2442            .unwrap_or(Role::User);
2443
2444        let is_assistant_message = message_role == Role::Assistant;
2445        let is_user_message = message_role == Role::User;
2446
2447        v_flex()
2448            .text_ui(cx)
2449            .gap_2()
2450            .when(is_user_message, |this| this.text_xs())
2451            .children(
2452                rendered_message.segments.iter().enumerate().map(
2453                    |(index, segment)| match segment {
2454                        RenderedMessageSegment::Thinking {
2455                            content,
2456                            scroll_handle,
2457                        } => self
2458                            .render_message_thinking_segment(
2459                                message_id,
2460                                index,
2461                                content.clone(),
2462                                scroll_handle,
2463                                Some(index) == pending_thinking_segment_index,
2464                                window,
2465                                cx,
2466                            )
2467                            .into_any_element(),
2468                        RenderedMessageSegment::Text(markdown) => {
2469                            let markdown_element = MarkdownElement::new(
2470                                markdown.clone(),
2471                                if is_user_message {
2472                                    let mut style = default_markdown_style(window, cx);
2473                                    let mut text_style = window.text_style();
2474                                    let theme_settings = ThemeSettings::get_global(cx);
2475
2476                                    let buffer_font = theme_settings.buffer_font.family.clone();
2477                                    let buffer_font_size = TextSize::Small.rems(cx);
2478
2479                                    text_style.refine(&TextStyleRefinement {
2480                                        font_family: Some(buffer_font),
2481                                        font_size: Some(buffer_font_size.into()),
2482                                        ..Default::default()
2483                                    });
2484
2485                                    style.base_text_style = text_style;
2486                                    style
2487                                } else {
2488                                    default_markdown_style(window, cx)
2489                                },
2490                            );
2491
2492                            let markdown_element = if is_assistant_message {
2493                                markdown_element.code_block_renderer(
2494                                    markdown::CodeBlockRenderer::Custom {
2495                                        render: Arc::new({
2496                                            let workspace = workspace.clone();
2497                                            let active_thread = cx.entity();
2498                                            move |kind,
2499                                                  parsed_markdown,
2500                                                  range,
2501                                                  metadata,
2502                                                  window,
2503                                                  cx| {
2504                                                render_markdown_code_block(
2505                                                    message_id,
2506                                                    range.start,
2507                                                    kind,
2508                                                    parsed_markdown,
2509                                                    metadata,
2510                                                    active_thread.clone(),
2511                                                    workspace.clone(),
2512                                                    window,
2513                                                    cx,
2514                                                )
2515                                            }
2516                                        }),
2517                                        transform: Some(Arc::new({
2518                                            let active_thread = cx.entity();
2519
2520                                            move |element, range, _, _, cx| {
2521                                                let is_expanded = active_thread
2522                                                    .read(cx)
2523                                                    .is_codeblock_expanded(message_id, range.start);
2524
2525                                                if is_expanded {
2526                                                    return element;
2527                                                }
2528
2529                                                element
2530                                            }
2531                                        })),
2532                                    },
2533                                )
2534                            } else {
2535                                markdown_element.code_block_renderer(
2536                                    markdown::CodeBlockRenderer::Default {
2537                                        copy_button: false,
2538                                        copy_button_on_hover: false,
2539                                        border: true,
2540                                    },
2541                                )
2542                            };
2543
2544                            div()
2545                                .child(markdown_element.on_url_click({
2546                                    let workspace = self.workspace.clone();
2547                                    move |text, window, cx| {
2548                                        open_markdown_link(text, workspace.clone(), window, cx);
2549                                    }
2550                                }))
2551                                .into_any_element()
2552                        }
2553                    },
2554                ),
2555            )
2556    }
2557
2558    fn tool_card_border_color(&self, cx: &Context<Self>) -> Hsla {
2559        cx.theme().colors().border.opacity(0.5)
2560    }
2561
2562    fn tool_card_header_bg(&self, cx: &Context<Self>) -> Hsla {
2563        cx.theme()
2564            .colors()
2565            .element_background
2566            .blend(cx.theme().colors().editor_foreground.opacity(0.025))
2567    }
2568
2569    fn render_ui_notification(
2570        &self,
2571        message_content: impl IntoIterator<Item = impl IntoElement>,
2572        ix: usize,
2573        cx: &mut Context<Self>,
2574    ) -> Stateful<Div> {
2575        let message = div()
2576            .flex_1()
2577            .min_w_0()
2578            .text_size(TextSize::XSmall.rems(cx))
2579            .text_color(cx.theme().colors().text_muted)
2580            .children(message_content);
2581
2582        div()
2583            .id(("message-container", ix))
2584            .py_1()
2585            .px_2p5()
2586            .child(Banner::new().severity(Severity::Warning).child(message))
2587    }
2588
2589    fn render_message_thinking_segment(
2590        &self,
2591        message_id: MessageId,
2592        ix: usize,
2593        markdown: Entity<Markdown>,
2594        scroll_handle: &ScrollHandle,
2595        pending: bool,
2596        window: &Window,
2597        cx: &Context<Self>,
2598    ) -> impl IntoElement {
2599        let is_open = self
2600            .expanded_thinking_segments
2601            .get(&(message_id, ix))
2602            .copied()
2603            .unwrap_or_default();
2604
2605        let editor_bg = cx.theme().colors().panel_background;
2606
2607        div().map(|this| {
2608            if pending {
2609                this.v_flex()
2610                    .mt_neg_2()
2611                    .mb_1p5()
2612                    .child(
2613                        h_flex()
2614                            .group("disclosure-header")
2615                            .justify_between()
2616                            .child(
2617                                h_flex()
2618                                    .gap_1p5()
2619                                    .child(
2620                                        Icon::new(IconName::ToolThink)
2621                                            .size(IconSize::Small)
2622                                            .color(Color::Muted),
2623                                    )
2624                                    .child(LoadingLabel::new("Thinking").size(LabelSize::Small)),
2625                            )
2626                            .child(
2627                                h_flex()
2628                                    .gap_1()
2629                                    .child(
2630                                        div().visible_on_hover("disclosure-header").child(
2631                                            Disclosure::new("thinking-disclosure", is_open)
2632                                                .opened_icon(IconName::ChevronUp)
2633                                                .closed_icon(IconName::ChevronDown)
2634                                                .on_click(cx.listener({
2635                                                    move |this, _event, _window, _cx| {
2636                                                        let is_open = this
2637                                                            .expanded_thinking_segments
2638                                                            .entry((message_id, ix))
2639                                                            .or_insert(false);
2640
2641                                                        *is_open = !*is_open;
2642                                                    }
2643                                                })),
2644                                        ),
2645                                    )
2646                                    .child({
2647                                        Icon::new(IconName::ArrowCircle)
2648                                            .color(Color::Accent)
2649                                            .size(IconSize::Small)
2650                                            .with_animation(
2651                                                "arrow-circle",
2652                                                Animation::new(Duration::from_secs(2)).repeat(),
2653                                                |icon, delta| {
2654                                                    icon.transform(Transformation::rotate(
2655                                                        percentage(delta),
2656                                                    ))
2657                                                },
2658                                            )
2659                                    }),
2660                            ),
2661                    )
2662                    .when(!is_open, |this| {
2663                        let gradient_overlay = div()
2664                            .rounded_b_lg()
2665                            .h_full()
2666                            .absolute()
2667                            .w_full()
2668                            .bottom_0()
2669                            .left_0()
2670                            .bg(linear_gradient(
2671                                180.,
2672                                linear_color_stop(editor_bg, 1.),
2673                                linear_color_stop(editor_bg.opacity(0.2), 0.),
2674                            ));
2675
2676                        this.child(
2677                            div()
2678                                .relative()
2679                                .bg(editor_bg)
2680                                .rounded_b_lg()
2681                                .mt_2()
2682                                .pl_4()
2683                                .child(
2684                                    div()
2685                                        .id(("thinking-content", ix))
2686                                        .max_h_20()
2687                                        .track_scroll(scroll_handle)
2688                                        .text_ui_sm(cx)
2689                                        .overflow_hidden()
2690                                        .child(
2691                                            MarkdownElement::new(
2692                                                markdown.clone(),
2693                                                default_markdown_style(window, cx),
2694                                            )
2695                                            .on_url_click({
2696                                                let workspace = self.workspace.clone();
2697                                                move |text, window, cx| {
2698                                                    open_markdown_link(
2699                                                        text,
2700                                                        workspace.clone(),
2701                                                        window,
2702                                                        cx,
2703                                                    );
2704                                                }
2705                                            }),
2706                                        ),
2707                                )
2708                                .child(gradient_overlay),
2709                        )
2710                    })
2711                    .when(is_open, |this| {
2712                        this.child(
2713                            div()
2714                                .id(("thinking-content", ix))
2715                                .h_full()
2716                                .bg(editor_bg)
2717                                .text_ui_sm(cx)
2718                                .child(
2719                                    MarkdownElement::new(
2720                                        markdown.clone(),
2721                                        default_markdown_style(window, cx),
2722                                    )
2723                                    .on_url_click({
2724                                        let workspace = self.workspace.clone();
2725                                        move |text, window, cx| {
2726                                            open_markdown_link(text, workspace.clone(), window, cx);
2727                                        }
2728                                    }),
2729                                ),
2730                        )
2731                    })
2732            } else {
2733                this.v_flex()
2734                    .mt_neg_2()
2735                    .child(
2736                        h_flex()
2737                            .group("disclosure-header")
2738                            .pr_1()
2739                            .justify_between()
2740                            .opacity(0.8)
2741                            .hover(|style| style.opacity(1.))
2742                            .child(
2743                                h_flex()
2744                                    .gap_1p5()
2745                                    .child(
2746                                        Icon::new(IconName::ToolThink)
2747                                            .size(IconSize::XSmall)
2748                                            .color(Color::Muted),
2749                                    )
2750                                    .child(Label::new("Thought Process").size(LabelSize::Small)),
2751                            )
2752                            .child(
2753                                div().visible_on_hover("disclosure-header").child(
2754                                    Disclosure::new("thinking-disclosure", is_open)
2755                                        .opened_icon(IconName::ChevronUp)
2756                                        .closed_icon(IconName::ChevronDown)
2757                                        .on_click(cx.listener({
2758                                            move |this, _event, _window, _cx| {
2759                                                let is_open = this
2760                                                    .expanded_thinking_segments
2761                                                    .entry((message_id, ix))
2762                                                    .or_insert(false);
2763
2764                                                *is_open = !*is_open;
2765                                            }
2766                                        })),
2767                                ),
2768                            ),
2769                    )
2770                    .child(
2771                        div()
2772                            .id(("thinking-content", ix))
2773                            .relative()
2774                            .mt_1p5()
2775                            .ml_1p5()
2776                            .pl_2p5()
2777                            .border_l_1()
2778                            .border_color(cx.theme().colors().border_variant)
2779                            .text_ui_sm(cx)
2780                            .when(is_open, |this| {
2781                                this.child(
2782                                    MarkdownElement::new(
2783                                        markdown.clone(),
2784                                        default_markdown_style(window, cx),
2785                                    )
2786                                    .on_url_click({
2787                                        let workspace = self.workspace.clone();
2788                                        move |text, window, cx| {
2789                                            open_markdown_link(text, workspace.clone(), window, cx);
2790                                        }
2791                                    }),
2792                                )
2793                            }),
2794                    )
2795            }
2796        })
2797    }
2798
2799    fn render_tool_use(
2800        &self,
2801        tool_use: ToolUse,
2802        window: &mut Window,
2803        workspace: WeakEntity<Workspace>,
2804        cx: &mut Context<Self>,
2805    ) -> impl IntoElement + use<> {
2806        if let Some(card) = self.thread.read(cx).card_for_tool(&tool_use.id) {
2807            return card.render(&tool_use.status, window, workspace, cx);
2808        }
2809
2810        let is_open = self
2811            .expanded_tool_uses
2812            .get(&tool_use.id)
2813            .copied()
2814            .unwrap_or_default();
2815
2816        let is_status_finished = matches!(&tool_use.status, ToolUseStatus::Finished(_));
2817
2818        let fs = self
2819            .workspace
2820            .upgrade()
2821            .map(|workspace| workspace.read(cx).app_state().fs.clone());
2822        let needs_confirmation = matches!(&tool_use.status, ToolUseStatus::NeedsConfirmation);
2823        let needs_confirmation_tools = tool_use.needs_confirmation;
2824
2825        let status_icons = div().child(match &tool_use.status {
2826            ToolUseStatus::NeedsConfirmation => {
2827                let icon = Icon::new(IconName::Warning)
2828                    .color(Color::Warning)
2829                    .size(IconSize::Small);
2830                icon.into_any_element()
2831            }
2832            ToolUseStatus::Pending
2833            | ToolUseStatus::InputStillStreaming
2834            | ToolUseStatus::Running => {
2835                let icon = Icon::new(IconName::ArrowCircle)
2836                    .color(Color::Accent)
2837                    .size(IconSize::Small);
2838                icon.with_animation(
2839                    "arrow-circle",
2840                    Animation::new(Duration::from_secs(2)).repeat(),
2841                    |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
2842                )
2843                .into_any_element()
2844            }
2845            ToolUseStatus::Finished(_) => div().w_0().into_any_element(),
2846            ToolUseStatus::Error(_) => {
2847                let icon = Icon::new(IconName::Close)
2848                    .color(Color::Error)
2849                    .size(IconSize::Small);
2850                icon.into_any_element()
2851            }
2852        });
2853
2854        let rendered_tool_use = self.rendered_tool_uses.get(&tool_use.id).cloned();
2855        let results_content_container = || v_flex().p_2().gap_0p5();
2856
2857        let results_content = v_flex()
2858            .gap_1()
2859            .child(
2860                results_content_container()
2861                    .child(
2862                        Label::new("Input")
2863                            .size(LabelSize::XSmall)
2864                            .color(Color::Muted)
2865                            .buffer_font(cx),
2866                    )
2867                    .child(
2868                        div()
2869                            .w_full()
2870                            .text_ui_sm(cx)
2871                            .children(rendered_tool_use.as_ref().map(|rendered| {
2872                                MarkdownElement::new(
2873                                    rendered.input.clone(),
2874                                    tool_use_markdown_style(window, cx),
2875                                )
2876                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2877                                    copy_button: false,
2878                                    copy_button_on_hover: false,
2879                                    border: false,
2880                                })
2881                                .on_url_click({
2882                                    let workspace = self.workspace.clone();
2883                                    move |text, window, cx| {
2884                                        open_markdown_link(text, workspace.clone(), window, cx);
2885                                    }
2886                                })
2887                            })),
2888                    ),
2889            )
2890            .map(|container| match tool_use.status {
2891                ToolUseStatus::Finished(_) => container.child(
2892                    results_content_container()
2893                        .border_t_1()
2894                        .border_color(self.tool_card_border_color(cx))
2895                        .child(
2896                            Label::new("Result")
2897                                .size(LabelSize::XSmall)
2898                                .color(Color::Muted)
2899                                .buffer_font(cx),
2900                        )
2901                        .child(div().w_full().text_ui_sm(cx).children(
2902                            rendered_tool_use.as_ref().map(|rendered| {
2903                                MarkdownElement::new(
2904                                    rendered.output.clone(),
2905                                    tool_use_markdown_style(window, cx),
2906                                )
2907                                .code_block_renderer(markdown::CodeBlockRenderer::Default {
2908                                    copy_button: false,
2909                                    copy_button_on_hover: false,
2910                                    border: false,
2911                                })
2912                                .on_url_click({
2913                                    let workspace = self.workspace.clone();
2914                                    move |text, window, cx| {
2915                                        open_markdown_link(text, workspace.clone(), window, cx);
2916                                    }
2917                                })
2918                                .into_any_element()
2919                            }),
2920                        )),
2921                ),
2922                ToolUseStatus::InputStillStreaming | ToolUseStatus::Running => container.child(
2923                    results_content_container()
2924                        .border_t_1()
2925                        .border_color(self.tool_card_border_color(cx))
2926                        .child(
2927                            h_flex()
2928                                .gap_1()
2929                                .child(
2930                                    Icon::new(IconName::ArrowCircle)
2931                                        .size(IconSize::Small)
2932                                        .color(Color::Accent)
2933                                        .with_animation(
2934                                            "arrow-circle",
2935                                            Animation::new(Duration::from_secs(2)).repeat(),
2936                                            |icon, delta| {
2937                                                icon.transform(Transformation::rotate(percentage(
2938                                                    delta,
2939                                                )))
2940                                            },
2941                                        ),
2942                                )
2943                                .child(
2944                                    Label::new("Running…")
2945                                        .size(LabelSize::XSmall)
2946                                        .color(Color::Muted)
2947                                        .buffer_font(cx),
2948                                ),
2949                        ),
2950                ),
2951                ToolUseStatus::Error(_) => container.child(
2952                    results_content_container()
2953                        .border_t_1()
2954                        .border_color(self.tool_card_border_color(cx))
2955                        .child(
2956                            Label::new("Error")
2957                                .size(LabelSize::XSmall)
2958                                .color(Color::Muted)
2959                                .buffer_font(cx),
2960                        )
2961                        .child(
2962                            div()
2963                                .text_ui_sm(cx)
2964                                .children(rendered_tool_use.as_ref().map(|rendered| {
2965                                    MarkdownElement::new(
2966                                        rendered.output.clone(),
2967                                        tool_use_markdown_style(window, cx),
2968                                    )
2969                                    .on_url_click({
2970                                        let workspace = self.workspace.clone();
2971                                        move |text, window, cx| {
2972                                            open_markdown_link(text, workspace.clone(), window, cx);
2973                                        }
2974                                    })
2975                                    .into_any_element()
2976                                })),
2977                        ),
2978                ),
2979                ToolUseStatus::Pending => container,
2980                ToolUseStatus::NeedsConfirmation => container.child(
2981                    results_content_container()
2982                        .border_t_1()
2983                        .border_color(self.tool_card_border_color(cx))
2984                        .child(
2985                            Label::new("Asking Permission")
2986                                .size(LabelSize::Small)
2987                                .color(Color::Muted)
2988                                .buffer_font(cx),
2989                        ),
2990                ),
2991            });
2992
2993        let gradient_overlay = |color: Hsla| {
2994            div()
2995                .h_full()
2996                .absolute()
2997                .w_12()
2998                .bottom_0()
2999                .map(|element| {
3000                    if is_status_finished {
3001                        element.right_6()
3002                    } else {
3003                        element.right(px(44.))
3004                    }
3005                })
3006                .bg(linear_gradient(
3007                    90.,
3008                    linear_color_stop(color, 1.),
3009                    linear_color_stop(color.opacity(0.2), 0.),
3010                ))
3011        };
3012
3013        v_flex().gap_1().mb_2().map(|element| {
3014            if !needs_confirmation_tools {
3015                element.child(
3016                    v_flex()
3017                        .child(
3018                            h_flex()
3019                                .group("disclosure-header")
3020                                .relative()
3021                                .gap_1p5()
3022                                .justify_between()
3023                                .opacity(0.8)
3024                                .hover(|style| style.opacity(1.))
3025                                .when(!is_status_finished, |this| this.pr_2())
3026                                .child(
3027                                    h_flex()
3028                                        .id("tool-label-container")
3029                                        .gap_1p5()
3030                                        .max_w_full()
3031                                        .overflow_x_scroll()
3032                                        .child(
3033                                            Icon::new(tool_use.icon)
3034                                                .size(IconSize::Small)
3035                                                .color(Color::Muted),
3036                                        )
3037                                        .child(
3038                                            h_flex().pr_8().text_size(rems(0.8125)).children(
3039                                                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| {
3040                                                    open_markdown_link(text, workspace.clone(), window, cx);
3041                                                }}))
3042                                            ),
3043                                        ),
3044                                )
3045                                .child(
3046                                    h_flex()
3047                                        .gap_1()
3048                                        .child(
3049                                            div().visible_on_hover("disclosure-header").child(
3050                                                Disclosure::new("tool-use-disclosure", is_open)
3051                                                    .opened_icon(IconName::ChevronUp)
3052                                                    .closed_icon(IconName::ChevronDown)
3053                                                    .on_click(cx.listener({
3054                                                        let tool_use_id = tool_use.id.clone();
3055                                                        move |this, _event, _window, _cx| {
3056                                                            let is_open = this
3057                                                                .expanded_tool_uses
3058                                                                .entry(tool_use_id.clone())
3059                                                                .or_insert(false);
3060
3061                                                            *is_open = !*is_open;
3062                                                        }
3063                                                    })),
3064                                            ),
3065                                        )
3066                                        .child(status_icons),
3067                                )
3068                                .child(gradient_overlay(cx.theme().colors().panel_background)),
3069                        )
3070                        .map(|parent| {
3071                            if !is_open {
3072                                return parent;
3073                            }
3074
3075                            parent.child(
3076                                v_flex()
3077                                    .mt_1()
3078                                    .border_1()
3079                                    .border_color(self.tool_card_border_color(cx))
3080                                    .bg(cx.theme().colors().editor_background)
3081                                    .rounded_lg()
3082                                    .child(results_content),
3083                            )
3084                        }),
3085                )
3086            } else {
3087                v_flex()
3088                    .mb_2()
3089                    .rounded_lg()
3090                    .border_1()
3091                    .border_color(self.tool_card_border_color(cx))
3092                    .overflow_hidden()
3093                    .child(
3094                        h_flex()
3095                            .group("disclosure-header")
3096                            .relative()
3097                            .justify_between()
3098                            .py_1()
3099                            .map(|element| {
3100                                if is_status_finished {
3101                                    element.pl_2().pr_0p5()
3102                                } else {
3103                                    element.px_2()
3104                                }
3105                            })
3106                            .bg(self.tool_card_header_bg(cx))
3107                            .map(|element| {
3108                                if is_open {
3109                                    element.border_b_1().rounded_t_md()
3110                                } else if needs_confirmation {
3111                                    element.rounded_t_md()
3112                                } else {
3113                                    element.rounded_md()
3114                                }
3115                            })
3116                            .border_color(self.tool_card_border_color(cx))
3117                            .child(
3118                                h_flex()
3119                                    .id("tool-label-container")
3120                                    .gap_1p5()
3121                                    .max_w_full()
3122                                    .overflow_x_scroll()
3123                                    .child(
3124                                        Icon::new(tool_use.icon)
3125                                            .size(IconSize::XSmall)
3126                                            .color(Color::Muted),
3127                                    )
3128                                    .child(
3129                                        h_flex().pr_8().text_ui_sm(cx).children(
3130                                            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| {
3131                                                open_markdown_link(text, workspace.clone(), window, cx);
3132                                            }}))
3133                                        ),
3134                                    ),
3135                            )
3136                            .child(
3137                                h_flex()
3138                                    .gap_1()
3139                                    .child(
3140                                        div().visible_on_hover("disclosure-header").child(
3141                                            Disclosure::new("tool-use-disclosure", is_open)
3142                                                .opened_icon(IconName::ChevronUp)
3143                                                .closed_icon(IconName::ChevronDown)
3144                                                .on_click(cx.listener({
3145                                                    let tool_use_id = tool_use.id.clone();
3146                                                    move |this, _event, _window, _cx| {
3147                                                        let is_open = this
3148                                                            .expanded_tool_uses
3149                                                            .entry(tool_use_id.clone())
3150                                                            .or_insert(false);
3151
3152                                                        *is_open = !*is_open;
3153                                                    }
3154                                                })),
3155                                        ),
3156                                    )
3157                                    .child(status_icons),
3158                            )
3159                            .child(gradient_overlay(self.tool_card_header_bg(cx))),
3160                    )
3161                    .map(|parent| {
3162                        if !is_open {
3163                            return parent;
3164                        }
3165
3166                        parent.child(
3167                            v_flex()
3168                                .bg(cx.theme().colors().editor_background)
3169                                .map(|element| {
3170                                    if  needs_confirmation {
3171                                        element.rounded_none()
3172                                    } else {
3173                                        element.rounded_b_lg()
3174                                    }
3175                                })
3176                                .child(results_content),
3177                        )
3178                    })
3179                    .when(needs_confirmation, |this| {
3180                        this.child(
3181                            h_flex()
3182                                .py_1()
3183                                .pl_2()
3184                                .pr_1()
3185                                .gap_1()
3186                                .justify_between()
3187                                .flex_wrap()
3188                                .bg(cx.theme().colors().editor_background)
3189                                .border_t_1()
3190                                .border_color(self.tool_card_border_color(cx))
3191                                .rounded_b_lg()
3192                                .child(
3193                                    div()
3194                                        .min_w(rems_from_px(145.))
3195                                        .child(LoadingLabel::new("Waiting for Confirmation").size(LabelSize::Small)
3196                                    )
3197                                )
3198                                .child(
3199                                    h_flex()
3200                                        .gap_0p5()
3201                                        .child({
3202                                            let tool_id = tool_use.id.clone();
3203                                            Button::new(
3204                                                "always-allow-tool-action",
3205                                                "Always Allow",
3206                                            )
3207                                            .label_size(LabelSize::Small)
3208                                            .icon(IconName::CheckDouble)
3209                                            .icon_position(IconPosition::Start)
3210                                            .icon_size(IconSize::Small)
3211                                            .icon_color(Color::Success)
3212                                            .tooltip(move |window, cx|  {
3213                                                Tooltip::with_meta(
3214                                                    "Never ask for permission",
3215                                                    None,
3216                                                    "Restore the original behavior in your Agent Panel settings",
3217                                                    window,
3218                                                    cx,
3219                                                )
3220                                            })
3221                                            .on_click(cx.listener(
3222                                                move |this, event, window, cx| {
3223                                                    if let Some(fs) = fs.clone() {
3224                                                        update_settings_file::<AgentSettings>(
3225                                                            fs.clone(),
3226                                                            cx,
3227                                                            |settings, _| {
3228                                                                settings.set_always_allow_tool_actions(true);
3229                                                            },
3230                                                        );
3231                                                    }
3232                                                    this.handle_allow_tool(
3233                                                        tool_id.clone(),
3234                                                        event,
3235                                                        window,
3236                                                        cx,
3237                                                    )
3238                                                },
3239                                            ))
3240                                        })
3241                                        .child({
3242                                            let tool_id = tool_use.id.clone();
3243                                            Button::new("allow-tool-action", "Allow")
3244                                                .label_size(LabelSize::Small)
3245                                                .icon(IconName::Check)
3246                                                .icon_position(IconPosition::Start)
3247                                                .icon_size(IconSize::Small)
3248                                                .icon_color(Color::Success)
3249                                                .on_click(cx.listener(
3250                                                    move |this, event, window, cx| {
3251                                                        this.handle_allow_tool(
3252                                                            tool_id.clone(),
3253                                                            event,
3254                                                            window,
3255                                                            cx,
3256                                                        )
3257                                                    },
3258                                                ))
3259                                        })
3260                                        .child({
3261                                            let tool_id = tool_use.id.clone();
3262                                            let tool_name: Arc<str> = tool_use.name.into();
3263                                            Button::new("deny-tool", "Deny")
3264                                                .label_size(LabelSize::Small)
3265                                                .icon(IconName::Close)
3266                                                .icon_position(IconPosition::Start)
3267                                                .icon_size(IconSize::Small)
3268                                                .icon_color(Color::Error)
3269                                                .on_click(cx.listener(
3270                                                    move |this, event, window, cx| {
3271                                                        this.handle_deny_tool(
3272                                                            tool_id.clone(),
3273                                                            tool_name.clone(),
3274                                                            event,
3275                                                            window,
3276                                                            cx,
3277                                                        )
3278                                                    },
3279                                                ))
3280                                        }),
3281                                ),
3282                        )
3283                    })
3284            }
3285        }).into_any_element()
3286    }
3287
3288    fn render_rules_item(&self, cx: &Context<Self>) -> AnyElement {
3289        let project_context = self.thread.read(cx).project_context();
3290        let project_context = project_context.borrow();
3291        let Some(project_context) = project_context.as_ref() else {
3292            return div().into_any();
3293        };
3294
3295        let user_rules_text = if project_context.user_rules.is_empty() {
3296            None
3297        } else if project_context.user_rules.len() == 1 {
3298            let user_rules = &project_context.user_rules[0];
3299
3300            match user_rules.title.as_ref() {
3301                Some(title) => Some(format!("Using \"{title}\" user rule")),
3302                None => Some("Using user rule".into()),
3303            }
3304        } else {
3305            Some(format!(
3306                "Using {} user rules",
3307                project_context.user_rules.len()
3308            ))
3309        };
3310
3311        let first_user_rules_id = project_context
3312            .user_rules
3313            .first()
3314            .map(|user_rules| user_rules.uuid.0);
3315
3316        let rules_files = project_context
3317            .worktrees
3318            .iter()
3319            .filter_map(|worktree| worktree.rules_file.as_ref())
3320            .collect::<Vec<_>>();
3321
3322        let rules_file_text = match rules_files.as_slice() {
3323            &[] => None,
3324            &[rules_file] => Some(format!(
3325                "Using project {:?} file",
3326                rules_file.path_in_worktree
3327            )),
3328            rules_files => Some(format!("Using {} project rules files", rules_files.len())),
3329        };
3330
3331        if user_rules_text.is_none() && rules_file_text.is_none() {
3332            return div().into_any();
3333        }
3334
3335        v_flex()
3336            .pt_2()
3337            .px_2p5()
3338            .gap_1()
3339            .when_some(user_rules_text, |parent, user_rules_text| {
3340                parent.child(
3341                    h_flex()
3342                        .w_full()
3343                        .child(
3344                            Icon::new(RULES_ICON)
3345                                .size(IconSize::XSmall)
3346                                .color(Color::Disabled),
3347                        )
3348                        .child(
3349                            Label::new(user_rules_text)
3350                                .size(LabelSize::XSmall)
3351                                .color(Color::Muted)
3352                                .truncate()
3353                                .buffer_font(cx)
3354                                .ml_1p5()
3355                                .mr_0p5(),
3356                        )
3357                        .child(
3358                            IconButton::new("open-prompt-library", IconName::ArrowUpRight)
3359                                .shape(ui::IconButtonShape::Square)
3360                                .icon_size(IconSize::XSmall)
3361                                .icon_color(Color::Ignored)
3362                                // TODO: Figure out a way to pass focus handle here so we can display the `OpenRulesLibrary`  keybinding
3363                                .tooltip(Tooltip::text("View User Rules"))
3364                                .on_click(move |_event, window, cx| {
3365                                    window.dispatch_action(
3366                                        Box::new(OpenRulesLibrary {
3367                                            prompt_to_select: first_user_rules_id,
3368                                        }),
3369                                        cx,
3370                                    )
3371                                }),
3372                        ),
3373                )
3374            })
3375            .when_some(rules_file_text, |parent, rules_file_text| {
3376                parent.child(
3377                    h_flex()
3378                        .w_full()
3379                        .child(
3380                            Icon::new(IconName::File)
3381                                .size(IconSize::XSmall)
3382                                .color(Color::Disabled),
3383                        )
3384                        .child(
3385                            Label::new(rules_file_text)
3386                                .size(LabelSize::XSmall)
3387                                .color(Color::Muted)
3388                                .buffer_font(cx)
3389                                .ml_1p5()
3390                                .mr_0p5(),
3391                        )
3392                        .child(
3393                            IconButton::new("open-rule", IconName::ArrowUpRight)
3394                                .shape(ui::IconButtonShape::Square)
3395                                .icon_size(IconSize::XSmall)
3396                                .icon_color(Color::Ignored)
3397                                .on_click(cx.listener(Self::handle_open_rules))
3398                                .tooltip(Tooltip::text("View Rules")),
3399                        ),
3400                )
3401            })
3402            .into_any()
3403    }
3404
3405    fn handle_allow_tool(
3406        &mut self,
3407        tool_use_id: LanguageModelToolUseId,
3408        _: &ClickEvent,
3409        window: &mut Window,
3410        cx: &mut Context<Self>,
3411    ) {
3412        if let Some(PendingToolUseStatus::NeedsConfirmation(c)) = self
3413            .thread
3414            .read(cx)
3415            .pending_tool(&tool_use_id)
3416            .map(|tool_use| tool_use.status.clone())
3417        {
3418            self.thread.update(cx, |thread, cx| {
3419                if let Some(configured) = thread.get_or_init_configured_model(cx) {
3420                    thread.run_tool(
3421                        c.tool_use_id.clone(),
3422                        c.ui_text.clone(),
3423                        c.input.clone(),
3424                        c.request.clone(),
3425                        c.tool.clone(),
3426                        configured.model,
3427                        Some(window.window_handle()),
3428                        cx,
3429                    );
3430                }
3431            });
3432        }
3433    }
3434
3435    fn handle_deny_tool(
3436        &mut self,
3437        tool_use_id: LanguageModelToolUseId,
3438        tool_name: Arc<str>,
3439        _: &ClickEvent,
3440        window: &mut Window,
3441        cx: &mut Context<Self>,
3442    ) {
3443        let window_handle = window.window_handle();
3444        self.thread.update(cx, |thread, cx| {
3445            thread.deny_tool_use(tool_use_id, tool_name, Some(window_handle), cx);
3446        });
3447    }
3448
3449    fn handle_open_rules(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
3450        let project_context = self.thread.read(cx).project_context();
3451        let project_context = project_context.borrow();
3452        let Some(project_context) = project_context.as_ref() else {
3453            return;
3454        };
3455
3456        let project_entry_ids = project_context
3457            .worktrees
3458            .iter()
3459            .flat_map(|worktree| worktree.rules_file.as_ref())
3460            .map(|rules_file| ProjectEntryId::from_usize(rules_file.project_entry_id))
3461            .collect::<Vec<_>>();
3462
3463        self.workspace
3464            .update(cx, move |workspace, cx| {
3465                // TODO: Open a multibuffer instead? In some cases this doesn't make the set of rules
3466                // files clear. For example, if rules file 1 is already open but rules file 2 is not,
3467                // this would open and focus rules file 2 in a tab that is not next to rules file 1.
3468                let project = workspace.project().read(cx);
3469                let project_paths = project_entry_ids
3470                    .into_iter()
3471                    .flat_map(|entry_id| project.path_for_entry(entry_id, cx))
3472                    .collect::<Vec<_>>();
3473                for project_path in project_paths {
3474                    workspace
3475                        .open_path(project_path, None, true, window, cx)
3476                        .detach_and_log_err(cx);
3477                }
3478            })
3479            .ok();
3480    }
3481
3482    fn dismiss_notifications(&mut self, cx: &mut Context<ActiveThread>) {
3483        for window in self.notifications.drain(..) {
3484            window
3485                .update(cx, |_, window, _| {
3486                    window.remove_window();
3487                })
3488                .ok();
3489
3490            self.notification_subscriptions.remove(&window);
3491        }
3492    }
3493
3494    fn render_vertical_scrollbar(&self, cx: &mut Context<Self>) -> Stateful<Div> {
3495        div()
3496            .occlude()
3497            .id("active-thread-scrollbar")
3498            .on_mouse_move(cx.listener(|_, _, _, cx| {
3499                cx.notify();
3500                cx.stop_propagation()
3501            }))
3502            .on_hover(|_, _, cx| {
3503                cx.stop_propagation();
3504            })
3505            .on_any_mouse_down(|_, _, cx| {
3506                cx.stop_propagation();
3507            })
3508            .on_mouse_up(
3509                MouseButton::Left,
3510                cx.listener(|_, _, _, cx| {
3511                    cx.stop_propagation();
3512                }),
3513            )
3514            .on_scroll_wheel(cx.listener(|_, _, _, cx| {
3515                cx.notify();
3516            }))
3517            .h_full()
3518            .absolute()
3519            .right_1()
3520            .top_1()
3521            .bottom_0()
3522            .w(px(12.))
3523            .cursor_default()
3524            .children(Scrollbar::vertical(self.scrollbar_state.clone()).map(|s| s.auto_hide(cx)))
3525    }
3526
3527    pub fn is_codeblock_expanded(&self, message_id: MessageId, ix: usize) -> bool {
3528        self.expanded_code_blocks
3529            .get(&(message_id, ix))
3530            .copied()
3531            .unwrap_or(true)
3532    }
3533
3534    pub fn toggle_codeblock_expanded(&mut self, message_id: MessageId, ix: usize) {
3535        let is_expanded = self
3536            .expanded_code_blocks
3537            .entry((message_id, ix))
3538            .or_insert(true);
3539        *is_expanded = !*is_expanded;
3540    }
3541
3542    pub fn scroll_to_top(&mut self, cx: &mut Context<Self>) {
3543        self.list_state.scroll_to(ListOffset::default());
3544        cx.notify();
3545    }
3546
3547    pub fn scroll_to_bottom(&mut self, cx: &mut Context<Self>) {
3548        self.list_state.reset(self.messages.len());
3549        cx.notify();
3550    }
3551}
3552
3553pub enum ActiveThreadEvent {
3554    EditingMessageTokenCountChanged,
3555}
3556
3557impl EventEmitter<ActiveThreadEvent> for ActiveThread {}
3558
3559impl Render for ActiveThread {
3560    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3561        v_flex()
3562            .size_full()
3563            .relative()
3564            .bg(cx.theme().colors().panel_background)
3565            .child(list(self.list_state.clone(), cx.processor(Self::render_message)).flex_grow())
3566            .child(self.render_vertical_scrollbar(cx))
3567    }
3568}
3569
3570pub(crate) fn open_active_thread_as_markdown(
3571    thread: Entity<Thread>,
3572    workspace: Entity<Workspace>,
3573    window: &mut Window,
3574    cx: &mut App,
3575) -> Task<anyhow::Result<()>> {
3576    let markdown_language_task = workspace
3577        .read(cx)
3578        .app_state()
3579        .languages
3580        .language_for_name("Markdown");
3581
3582    window.spawn(cx, async move |cx| {
3583        let markdown_language = markdown_language_task.await?;
3584
3585        workspace.update_in(cx, |workspace, window, cx| {
3586            let thread = thread.read(cx);
3587            let markdown = thread.to_markdown(cx)?;
3588            let thread_summary = thread.summary().or_default().to_string();
3589
3590            let project = workspace.project().clone();
3591
3592            if !project.read(cx).is_local() {
3593                anyhow::bail!("failed to open active thread as markdown in remote project");
3594            }
3595
3596            let buffer = project.update(cx, |project, cx| {
3597                project.create_local_buffer(&markdown, Some(markdown_language), cx)
3598            });
3599            let buffer =
3600                cx.new(|cx| MultiBuffer::singleton(buffer, cx).with_title(thread_summary.clone()));
3601
3602            workspace.add_item_to_active_pane(
3603                Box::new(cx.new(|cx| {
3604                    let mut editor =
3605                        Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
3606                    editor.set_breadcrumb_header(thread_summary);
3607                    editor
3608                })),
3609                None,
3610                true,
3611                window,
3612                cx,
3613            );
3614
3615            anyhow::Ok(())
3616        })??;
3617        anyhow::Ok(())
3618    })
3619}
3620
3621pub(crate) fn open_context(
3622    context: &AgentContextHandle,
3623    workspace: Entity<Workspace>,
3624    window: &mut Window,
3625    cx: &mut App,
3626) {
3627    match context {
3628        AgentContextHandle::File(file_context) => {
3629            if let Some(project_path) = file_context.project_path(cx) {
3630                workspace.update(cx, |workspace, cx| {
3631                    workspace
3632                        .open_path(project_path, None, true, window, cx)
3633                        .detach_and_log_err(cx);
3634                });
3635            }
3636        }
3637
3638        AgentContextHandle::Directory(directory_context) => {
3639            let entry_id = directory_context.entry_id;
3640            workspace.update(cx, |workspace, cx| {
3641                workspace.project().update(cx, |_project, cx| {
3642                    cx.emit(project::Event::RevealInProjectPanel(entry_id));
3643                })
3644            })
3645        }
3646
3647        AgentContextHandle::Symbol(symbol_context) => {
3648            let buffer = symbol_context.buffer.read(cx);
3649            if let Some(project_path) = buffer.project_path(cx) {
3650                let snapshot = buffer.snapshot();
3651                let target_position = symbol_context.range.start.to_point(&snapshot);
3652                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3653                    .detach();
3654            }
3655        }
3656
3657        AgentContextHandle::Selection(selection_context) => {
3658            let buffer = selection_context.buffer.read(cx);
3659            if let Some(project_path) = buffer.project_path(cx) {
3660                let snapshot = buffer.snapshot();
3661                let target_position = selection_context.range.start.to_point(&snapshot);
3662
3663                open_editor_at_position(project_path, target_position, &workspace, window, cx)
3664                    .detach();
3665            }
3666        }
3667
3668        AgentContextHandle::FetchedUrl(fetched_url_context) => {
3669            cx.open_url(&fetched_url_context.url);
3670        }
3671
3672        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
3673            if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3674                let thread = thread_context.thread.clone();
3675                window.defer(cx, move |window, cx| {
3676                    panel.update(cx, |panel, cx| {
3677                        panel.open_thread(thread, window, cx);
3678                    });
3679                });
3680            }
3681        }),
3682
3683        AgentContextHandle::TextThread(text_thread_context) => {
3684            workspace.update(cx, |workspace, cx| {
3685                if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3686                    let context = text_thread_context.context.clone();
3687                    window.defer(cx, move |window, cx| {
3688                        panel.update(cx, |panel, cx| {
3689                            panel.open_prompt_editor(context, window, cx)
3690                        });
3691                    });
3692                }
3693            })
3694        }
3695
3696        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
3697            Box::new(OpenRulesLibrary {
3698                prompt_to_select: Some(rules_context.prompt_id.0),
3699            }),
3700            cx,
3701        ),
3702
3703        AgentContextHandle::Image(_) => {}
3704    }
3705}
3706
3707pub(crate) fn attach_pasted_images_as_context(
3708    context_store: &Entity<ContextStore>,
3709    cx: &mut App,
3710) -> bool {
3711    let images = cx
3712        .read_from_clipboard()
3713        .map(|item| {
3714            item.into_entries()
3715                .filter_map(|entry| {
3716                    if let ClipboardEntry::Image(image) = entry {
3717                        Some(image)
3718                    } else {
3719                        None
3720                    }
3721                })
3722                .collect::<Vec<_>>()
3723        })
3724        .unwrap_or_default();
3725
3726    if images.is_empty() {
3727        return false;
3728    }
3729    cx.stop_propagation();
3730
3731    context_store.update(cx, |store, cx| {
3732        for image in images {
3733            store.add_image_instance(Arc::new(image), cx);
3734        }
3735    });
3736    true
3737}
3738
3739fn open_editor_at_position(
3740    project_path: project::ProjectPath,
3741    target_position: Point,
3742    workspace: &Entity<Workspace>,
3743    window: &mut Window,
3744    cx: &mut App,
3745) -> Task<()> {
3746    let open_task = workspace.update(cx, |workspace, cx| {
3747        workspace.open_path(project_path, None, true, window, cx)
3748    });
3749    window.spawn(cx, async move |cx| {
3750        if let Some(active_editor) = open_task
3751            .await
3752            .log_err()
3753            .and_then(|item| item.downcast::<Editor>())
3754        {
3755            active_editor
3756                .downgrade()
3757                .update_in(cx, |editor, window, cx| {
3758                    editor.go_to_singleton_buffer_point(target_position, window, cx);
3759                })
3760                .log_err();
3761        }
3762    })
3763}
3764
3765#[cfg(test)]
3766mod tests {
3767    use super::*;
3768    use agent::{MessageSegment, context::ContextLoadResult, thread_store};
3769    use assistant_tool::{ToolRegistry, ToolWorkingSet};
3770    use editor::EditorSettings;
3771    use fs::FakeFs;
3772    use gpui::{AppContext, TestAppContext, VisualTestContext};
3773    use language_model::{
3774        ConfiguredModel, LanguageModel, LanguageModelRegistry,
3775        fake_provider::{FakeLanguageModel, FakeLanguageModelProvider},
3776    };
3777    use project::Project;
3778    use prompt_store::PromptBuilder;
3779    use serde_json::json;
3780    use settings::SettingsStore;
3781    use util::path;
3782    use workspace::CollaboratorId;
3783
3784    #[gpui::test]
3785    async fn test_agent_is_unfollowed_after_cancelling_completion(cx: &mut TestAppContext) {
3786        init_test_settings(cx);
3787
3788        let project = create_test_project(
3789            cx,
3790            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
3791        )
3792        .await;
3793
3794        let (cx, _active_thread, workspace, thread, model) =
3795            setup_test_environment(cx, project.clone()).await;
3796
3797        // Insert user message without any context (empty context vector)
3798        thread.update(cx, |thread, cx| {
3799            thread.insert_user_message(
3800                "What is the best way to learn Rust?",
3801                ContextLoadResult::default(),
3802                None,
3803                vec![],
3804                cx,
3805            );
3806        });
3807
3808        // Stream response to user message
3809        thread.update(cx, |thread, cx| {
3810            let intent = CompletionIntent::UserPrompt;
3811            let request = thread.to_completion_request(model.clone(), intent, cx);
3812            thread.stream_completion(request, model, intent, cx.active_window(), cx)
3813        });
3814        // Follow the agent
3815        cx.update(|window, cx| {
3816            workspace.update(cx, |workspace, cx| {
3817                workspace.follow(CollaboratorId::Agent, window, cx);
3818            })
3819        });
3820        assert!(cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3821
3822        // Cancel the current completion
3823        thread.update(cx, |thread, cx| {
3824            thread.cancel_last_completion(cx.active_window(), cx)
3825        });
3826
3827        cx.executor().run_until_parked();
3828
3829        // No longer following the agent
3830        assert!(!cx.read(|cx| workspace.read(cx).is_being_followed(CollaboratorId::Agent)));
3831    }
3832
3833    #[gpui::test]
3834    async fn test_reinserting_creases_for_edited_message(cx: &mut TestAppContext) {
3835        init_test_settings(cx);
3836
3837        let project = create_test_project(cx, json!({})).await;
3838
3839        let (cx, active_thread, _, thread, model) =
3840            setup_test_environment(cx, project.clone()).await;
3841        cx.update(|_, cx| {
3842            LanguageModelRegistry::global(cx).update(cx, |registry, cx| {
3843                registry.set_default_model(
3844                    Some(ConfiguredModel {
3845                        provider: Arc::new(FakeLanguageModelProvider::default()),
3846                        model,
3847                    }),
3848                    cx,
3849                );
3850            });
3851        });
3852
3853        let creases = vec![MessageCrease {
3854            range: 14..22,
3855            icon_path: "icon".into(),
3856            label: "foo.txt".into(),
3857            context: None,
3858        }];
3859
3860        let message = thread.update(cx, |thread, cx| {
3861            let message_id = thread.insert_user_message(
3862                "Tell me about @foo.txt",
3863                ContextLoadResult::default(),
3864                None,
3865                creases,
3866                cx,
3867            );
3868            thread.message(message_id).cloned().unwrap()
3869        });
3870
3871        active_thread.update_in(cx, |active_thread, window, cx| {
3872            if let Some(message_text) = message.segments.first().and_then(MessageSegment::text) {
3873                active_thread.start_editing_message(
3874                    message.id,
3875                    message_text,
3876                    message.creases.as_slice(),
3877                    window,
3878                    cx,
3879                );
3880            }
3881            let editor = active_thread
3882                .editing_message
3883                .as_ref()
3884                .unwrap()
3885                .1
3886                .editor
3887                .clone();
3888            editor.update(cx, |editor, cx| editor.edit([(0..13, "modified")], cx));
3889            active_thread.confirm_editing_message(&Default::default(), window, cx);
3890        });
3891        cx.run_until_parked();
3892
3893        let message = thread.update(cx, |thread, _| thread.message(message.id).cloned().unwrap());
3894        active_thread.update_in(cx, |active_thread, window, cx| {
3895            if let Some(message_text) = message.segments.first().and_then(MessageSegment::text) {
3896                active_thread.start_editing_message(
3897                    message.id,
3898                    message_text,
3899                    message.creases.as_slice(),
3900                    window,
3901                    cx,
3902                );
3903            }
3904            let editor = active_thread
3905                .editing_message
3906                .as_ref()
3907                .unwrap()
3908                .1
3909                .editor
3910                .clone();
3911            let text = editor.update(cx, |editor, cx| editor.text(cx));
3912            assert_eq!(text, "modified @foo.txt");
3913        });
3914    }
3915
3916    #[gpui::test]
3917    async fn test_editing_message_cancels_previous_completion(cx: &mut TestAppContext) {
3918        init_test_settings(cx);
3919
3920        let project = create_test_project(cx, json!({})).await;
3921
3922        let (cx, active_thread, _, thread, model) =
3923            setup_test_environment(cx, project.clone()).await;
3924
3925        cx.update(|_, cx| {
3926            LanguageModelRegistry::global(cx).update(cx, |registry, cx| {
3927                registry.set_default_model(
3928                    Some(ConfiguredModel {
3929                        provider: Arc::new(FakeLanguageModelProvider::default()),
3930                        model: model.clone(),
3931                    }),
3932                    cx,
3933                );
3934            });
3935        });
3936
3937        // Track thread events to verify cancellation
3938        let cancellation_events = Arc::new(std::sync::Mutex::new(Vec::new()));
3939        let new_request_events = Arc::new(std::sync::Mutex::new(Vec::new()));
3940
3941        let _subscription = cx.update(|_, cx| {
3942            let cancellation_events = cancellation_events.clone();
3943            let new_request_events = new_request_events.clone();
3944            cx.subscribe(
3945                &thread,
3946                move |_thread, event: &ThreadEvent, _cx| match event {
3947                    ThreadEvent::CompletionCanceled => {
3948                        cancellation_events.lock().unwrap().push(());
3949                    }
3950                    ThreadEvent::NewRequest => {
3951                        new_request_events.lock().unwrap().push(());
3952                    }
3953                    _ => {}
3954                },
3955            )
3956        });
3957
3958        // Insert a user message and start streaming a response
3959        let message = thread.update(cx, |thread, cx| {
3960            let message_id = thread.insert_user_message(
3961                "Hello, how are you?",
3962                ContextLoadResult::default(),
3963                None,
3964                vec![],
3965                cx,
3966            );
3967            thread.advance_prompt_id();
3968            thread.send_to_model(
3969                model.clone(),
3970                CompletionIntent::UserPrompt,
3971                cx.active_window(),
3972                cx,
3973            );
3974            thread.message(message_id).cloned().unwrap()
3975        });
3976
3977        cx.run_until_parked();
3978
3979        // Verify that a completion is in progress
3980        assert!(cx.read(|cx| thread.read(cx).is_generating()));
3981        assert_eq!(new_request_events.lock().unwrap().len(), 1);
3982
3983        // Edit the message while the completion is still running
3984        active_thread.update_in(cx, |active_thread, window, cx| {
3985            if let Some(message_text) = message.segments.first().and_then(MessageSegment::text) {
3986                active_thread.start_editing_message(
3987                    message.id,
3988                    message_text,
3989                    message.creases.as_slice(),
3990                    window,
3991                    cx,
3992                );
3993            }
3994            let editor = active_thread
3995                .editing_message
3996                .as_ref()
3997                .unwrap()
3998                .1
3999                .editor
4000                .clone();
4001            editor.update(cx, |editor, cx| {
4002                editor.set_text("What is the weather like?", window, cx);
4003            });
4004            active_thread.confirm_editing_message(&Default::default(), window, cx);
4005        });
4006
4007        cx.run_until_parked();
4008
4009        // Verify that the previous completion was canceled
4010        assert_eq!(cancellation_events.lock().unwrap().len(), 1);
4011
4012        // Verify that a new request was started after cancellation
4013        assert_eq!(new_request_events.lock().unwrap().len(), 2);
4014
4015        // Verify that the edited message contains the new text
4016        let edited_message =
4017            thread.update(cx, |thread, _| thread.message(message.id).cloned().unwrap());
4018        match &edited_message.segments[0] {
4019            MessageSegment::Text(text) => {
4020                assert_eq!(text, "What is the weather like?");
4021            }
4022            _ => panic!("Expected text segment"),
4023        }
4024    }
4025
4026    fn init_test_settings(cx: &mut TestAppContext) {
4027        cx.update(|cx| {
4028            let settings_store = SettingsStore::test(cx);
4029            cx.set_global(settings_store);
4030            language::init(cx);
4031            Project::init_settings(cx);
4032            AgentSettings::register(cx);
4033            prompt_store::init(cx);
4034            thread_store::init(cx);
4035            workspace::init_settings(cx);
4036            language_model::init_settings(cx);
4037            ThemeSettings::register(cx);
4038            EditorSettings::register(cx);
4039            ToolRegistry::default_global(cx);
4040        });
4041    }
4042
4043    // Helper to create a test project with test files
4044    async fn create_test_project(
4045        cx: &mut TestAppContext,
4046        files: serde_json::Value,
4047    ) -> Entity<Project> {
4048        let fs = FakeFs::new(cx.executor());
4049        fs.insert_tree(path!("/test"), files).await;
4050        Project::test(fs, [path!("/test").as_ref()], cx).await
4051    }
4052
4053    async fn setup_test_environment(
4054        cx: &mut TestAppContext,
4055        project: Entity<Project>,
4056    ) -> (
4057        &mut VisualTestContext,
4058        Entity<ActiveThread>,
4059        Entity<Workspace>,
4060        Entity<Thread>,
4061        Arc<dyn LanguageModel>,
4062    ) {
4063        let (workspace, cx) =
4064            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
4065
4066        let thread_store = cx
4067            .update(|_, cx| {
4068                ThreadStore::load(
4069                    project.clone(),
4070                    cx.new(|_| ToolWorkingSet::default()),
4071                    None,
4072                    Arc::new(PromptBuilder::new(None).unwrap()),
4073                    cx,
4074                )
4075            })
4076            .await
4077            .unwrap();
4078
4079        let text_thread_store = cx
4080            .update(|_, cx| {
4081                TextThreadStore::new(
4082                    project.clone(),
4083                    Arc::new(PromptBuilder::new(None).unwrap()),
4084                    Default::default(),
4085                    cx,
4086                )
4087            })
4088            .await
4089            .unwrap();
4090
4091        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
4092        let context_store =
4093            cx.new(|_cx| ContextStore::new(project.downgrade(), Some(thread_store.downgrade())));
4094
4095        let model = FakeLanguageModel::default();
4096        let model: Arc<dyn LanguageModel> = Arc::new(model);
4097
4098        let language_registry = LanguageRegistry::new(cx.executor());
4099        let language_registry = Arc::new(language_registry);
4100
4101        let active_thread = cx.update(|window, cx| {
4102            cx.new(|cx| {
4103                ActiveThread::new(
4104                    thread.clone(),
4105                    thread_store.clone(),
4106                    text_thread_store,
4107                    context_store.clone(),
4108                    language_registry.clone(),
4109                    workspace.downgrade(),
4110                    window,
4111                    cx,
4112                )
4113            })
4114        });
4115
4116        (cx, active_thread, workspace, thread, model)
4117    }
4118}