1use std::collections::BTreeMap;
   2use std::rc::Rc;
   3use std::sync::Arc;
   4
   5use crate::agent_diff::AgentDiffThread;
   6use crate::agent_model_selector::AgentModelSelector;
   7use crate::tool_compatibility::{IncompatibleToolsState, IncompatibleToolsTooltip};
   8use crate::ui::{
   9    BurnModeTooltip,
  10    preview::{AgentPreview, UsageCallout},
  11};
  12use agent::history_store::HistoryStore;
  13use agent::{
  14    context::{AgentContextKey, ContextLoadResult, load_context},
  15    context_store::ContextStoreEvent,
  16};
  17use agent_settings::{AgentProfileId, AgentSettings, CompletionMode};
  18use ai_onboarding::ApiKeysWithProviders;
  19use buffer_diff::BufferDiff;
  20use cloud_llm_client::CompletionIntent;
  21use collections::{HashMap, HashSet};
  22use editor::actions::{MoveUp, Paste};
  23use editor::display_map::CreaseId;
  24use editor::{
  25    Addon, AnchorRangeExt, ContextMenuOptions, ContextMenuPlacement, Editor, EditorElement,
  26    EditorEvent, EditorMode, EditorStyle, MultiBuffer,
  27};
  28use file_icons::FileIcons;
  29use fs::Fs;
  30use futures::future::Shared;
  31use futures::{FutureExt as _, future};
  32use gpui::{
  33    Animation, AnimationExt, App, Entity, EventEmitter, Focusable, IntoElement, KeyContext,
  34    Subscription, Task, TextStyle, WeakEntity, linear_color_stop, linear_gradient, point,
  35    pulsating_between,
  36};
  37use language::{Buffer, Language, Point};
  38use language_model::{
  39    ConfiguredModel, LanguageModelRegistry, LanguageModelRequestMessage, MessageContent,
  40    ZED_CLOUD_PROVIDER_ID,
  41};
  42use multi_buffer;
  43use project::Project;
  44use prompt_store::PromptStore;
  45use settings::Settings;
  46use std::time::Duration;
  47use theme::ThemeSettings;
  48use ui::{
  49    Callout, Disclosure, Divider, DividerColor, KeyBinding, PopoverMenuHandle, Tooltip, prelude::*,
  50};
  51use util::ResultExt as _;
  52use workspace::{CollaboratorId, Workspace};
  53use zed_actions::agent::Chat;
  54use zed_actions::agent::ToggleModelSelector;
  55
  56use crate::context_picker::{ContextPicker, ContextPickerCompletionProvider, crease_for_mention};
  57use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
  58use crate::profile_selector::{ProfileProvider, ProfileSelector};
  59use crate::{
  60    ActiveThread, AgentDiffPane, ChatWithFollow, ExpandMessageEditor, Follow, KeepAll,
  61    ModelUsageContext, NewThread, OpenAgentDiff, RejectAll, RemoveAllContext, ToggleBurnMode,
  62    ToggleContextPicker, ToggleProfileSelector, register_agent_preview,
  63};
  64use agent::{
  65    MessageCrease, Thread, TokenUsageRatio,
  66    context_store::ContextStore,
  67    thread_store::{TextThreadStore, ThreadStore},
  68};
  69
  70pub const MIN_EDITOR_LINES: usize = 4;
  71pub const MAX_EDITOR_LINES: usize = 8;
  72
  73#[derive(RegisterComponent)]
  74pub struct MessageEditor {
  75    thread: Entity<Thread>,
  76    incompatible_tools_state: Entity<IncompatibleToolsState>,
  77    editor: Entity<Editor>,
  78    workspace: WeakEntity<Workspace>,
  79    project: Entity<Project>,
  80    context_store: Entity<ContextStore>,
  81    prompt_store: Option<Entity<PromptStore>>,
  82    history_store: Option<WeakEntity<HistoryStore>>,
  83    context_strip: Entity<ContextStrip>,
  84    context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
  85    model_selector: Entity<AgentModelSelector>,
  86    last_loaded_context: Option<ContextLoadResult>,
  87    load_context_task: Option<Shared<Task<()>>>,
  88    profile_selector: Entity<ProfileSelector>,
  89    edits_expanded: bool,
  90    editor_is_expanded: bool,
  91    last_estimated_token_count: Option<u64>,
  92    update_token_count_task: Option<Task<()>>,
  93    _subscriptions: Vec<Subscription>,
  94}
  95
  96pub(crate) fn create_editor(
  97    workspace: WeakEntity<Workspace>,
  98    context_store: WeakEntity<ContextStore>,
  99    thread_store: WeakEntity<ThreadStore>,
 100    text_thread_store: WeakEntity<TextThreadStore>,
 101    min_lines: usize,
 102    max_lines: Option<usize>,
 103    window: &mut Window,
 104    cx: &mut App,
 105) -> Entity<Editor> {
 106    let language = Language::new(
 107        language::LanguageConfig {
 108            completion_query_characters: HashSet::from_iter(['.', '-', '_', '@']),
 109            ..Default::default()
 110        },
 111        None,
 112    );
 113
 114    let editor = cx.new(|cx| {
 115        let buffer = cx.new(|cx| Buffer::local("", cx).with_language(Arc::new(language), cx));
 116        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 117        let mut editor = Editor::new(
 118            editor::EditorMode::AutoHeight {
 119                min_lines,
 120                max_lines,
 121            },
 122            buffer,
 123            None,
 124            window,
 125            cx,
 126        );
 127        editor.set_placeholder_text("Message the agent – @ to include context", cx);
 128        editor.set_show_indent_guides(false, cx);
 129        editor.set_soft_wrap();
 130        editor.set_use_modal_editing(true);
 131        editor.set_context_menu_options(ContextMenuOptions {
 132            min_entries_visible: 12,
 133            max_entries_visible: 12,
 134            placement: Some(ContextMenuPlacement::Above),
 135        });
 136        editor.register_addon(ContextCreasesAddon::new());
 137        editor.register_addon(MessageEditorAddon::new());
 138        editor
 139    });
 140
 141    let editor_entity = editor.downgrade();
 142    editor.update(cx, |editor, _| {
 143        editor.set_completion_provider(Some(Rc::new(ContextPickerCompletionProvider::new(
 144            workspace,
 145            context_store,
 146            Some(thread_store),
 147            Some(text_thread_store),
 148            editor_entity,
 149            None,
 150        ))));
 151    });
 152    editor
 153}
 154
 155impl ProfileProvider for Entity<Thread> {
 156    fn profiles_supported(&self, cx: &App) -> bool {
 157        self.read(cx)
 158            .configured_model()
 159            .is_some_and(|model| model.model.supports_tools())
 160    }
 161
 162    fn profile_id(&self, cx: &App) -> AgentProfileId {
 163        self.read(cx).profile().id().clone()
 164    }
 165
 166    fn set_profile(&self, profile_id: AgentProfileId, cx: &mut App) {
 167        self.update(cx, |this, cx| {
 168            this.set_profile(profile_id, cx);
 169        });
 170    }
 171}
 172
 173impl MessageEditor {
 174    pub fn new(
 175        fs: Arc<dyn Fs>,
 176        workspace: WeakEntity<Workspace>,
 177        context_store: Entity<ContextStore>,
 178        prompt_store: Option<Entity<PromptStore>>,
 179        thread_store: WeakEntity<ThreadStore>,
 180        text_thread_store: WeakEntity<TextThreadStore>,
 181        history_store: Option<WeakEntity<HistoryStore>>,
 182        thread: Entity<Thread>,
 183        window: &mut Window,
 184        cx: &mut Context<Self>,
 185    ) -> Self {
 186        let context_picker_menu_handle = PopoverMenuHandle::default();
 187        let model_selector_menu_handle = PopoverMenuHandle::default();
 188
 189        let editor = create_editor(
 190            workspace.clone(),
 191            context_store.downgrade(),
 192            thread_store.clone(),
 193            text_thread_store.clone(),
 194            MIN_EDITOR_LINES,
 195            Some(MAX_EDITOR_LINES),
 196            window,
 197            cx,
 198        );
 199
 200        let context_strip = cx.new(|cx| {
 201            ContextStrip::new(
 202                context_store.clone(),
 203                workspace.clone(),
 204                Some(thread_store.clone()),
 205                Some(text_thread_store.clone()),
 206                context_picker_menu_handle.clone(),
 207                SuggestContextKind::File,
 208                ModelUsageContext::Thread(thread.clone()),
 209                window,
 210                cx,
 211            )
 212        });
 213
 214        let incompatible_tools = cx.new(|cx| IncompatibleToolsState::new(thread.clone(), cx));
 215
 216        let subscriptions = vec![
 217            cx.subscribe_in(&context_strip, window, Self::handle_context_strip_event),
 218            cx.subscribe(&editor, |this, _, event: &EditorEvent, cx| {
 219                if event == &EditorEvent::BufferEdited {
 220                    this.handle_message_changed(cx)
 221                }
 222            }),
 223            cx.observe(&context_store, |this, _, cx| {
 224                // When context changes, reload it for token counting.
 225                let _ = this.reload_context(cx);
 226            }),
 227            cx.observe(&thread.read(cx).action_log().clone(), |_, _, cx| {
 228                cx.notify()
 229            }),
 230        ];
 231
 232        let model_selector = cx.new(|cx| {
 233            AgentModelSelector::new(
 234                fs.clone(),
 235                model_selector_menu_handle,
 236                editor.focus_handle(cx),
 237                ModelUsageContext::Thread(thread.clone()),
 238                window,
 239                cx,
 240            )
 241        });
 242
 243        let profile_selector = cx.new(|cx| {
 244            ProfileSelector::new(fs, Arc::new(thread.clone()), editor.focus_handle(cx), cx)
 245        });
 246
 247        Self {
 248            editor: editor.clone(),
 249            project: thread.read(cx).project().clone(),
 250            thread,
 251            incompatible_tools_state: incompatible_tools.clone(),
 252            workspace,
 253            context_store,
 254            prompt_store,
 255            history_store,
 256            context_strip,
 257            context_picker_menu_handle,
 258            load_context_task: None,
 259            last_loaded_context: None,
 260            model_selector,
 261            edits_expanded: false,
 262            editor_is_expanded: false,
 263            profile_selector,
 264            last_estimated_token_count: None,
 265            update_token_count_task: None,
 266            _subscriptions: subscriptions,
 267        }
 268    }
 269
 270    pub fn context_store(&self) -> &Entity<ContextStore> {
 271        &self.context_store
 272    }
 273
 274    pub fn get_text(&self, cx: &App) -> String {
 275        self.editor.read(cx).text(cx)
 276    }
 277
 278    pub fn set_text(
 279        &mut self,
 280        text: impl Into<Arc<str>>,
 281        window: &mut Window,
 282        cx: &mut Context<Self>,
 283    ) {
 284        self.editor.update(cx, |editor, cx| {
 285            editor.set_text(text, window, cx);
 286        });
 287    }
 288
 289    pub fn expand_message_editor(
 290        &mut self,
 291        _: &ExpandMessageEditor,
 292        _window: &mut Window,
 293        cx: &mut Context<Self>,
 294    ) {
 295        self.set_editor_is_expanded(!self.editor_is_expanded, cx);
 296    }
 297
 298    fn set_editor_is_expanded(&mut self, is_expanded: bool, cx: &mut Context<Self>) {
 299        self.editor_is_expanded = is_expanded;
 300        self.editor.update(cx, |editor, _| {
 301            if self.editor_is_expanded {
 302                editor.set_mode(EditorMode::Full {
 303                    scale_ui_elements_with_buffer_font_size: false,
 304                    show_active_line_background: false,
 305                    sized_by_content: false,
 306                })
 307            } else {
 308                editor.set_mode(EditorMode::AutoHeight {
 309                    min_lines: MIN_EDITOR_LINES,
 310                    max_lines: Some(MAX_EDITOR_LINES),
 311                })
 312            }
 313        });
 314        cx.notify();
 315    }
 316
 317    fn toggle_context_picker(
 318        &mut self,
 319        _: &ToggleContextPicker,
 320        window: &mut Window,
 321        cx: &mut Context<Self>,
 322    ) {
 323        self.context_picker_menu_handle.toggle(window, cx);
 324    }
 325
 326    pub fn remove_all_context(
 327        &mut self,
 328        _: &RemoveAllContext,
 329        _window: &mut Window,
 330        cx: &mut Context<Self>,
 331    ) {
 332        self.context_store.update(cx, |store, cx| store.clear(cx));
 333        cx.notify();
 334    }
 335
 336    fn chat(&mut self, _: &Chat, window: &mut Window, cx: &mut Context<Self>) {
 337        if self.is_editor_empty(cx) {
 338            return;
 339        }
 340
 341        self.thread.update(cx, |thread, cx| {
 342            thread.cancel_editing(cx);
 343        });
 344
 345        if self.thread.read(cx).is_generating() {
 346            self.stop_current_and_send_new_message(window, cx);
 347            return;
 348        }
 349
 350        self.set_editor_is_expanded(false, cx);
 351        self.send_to_model(window, cx);
 352
 353        cx.emit(MessageEditorEvent::ScrollThreadToBottom);
 354        cx.notify();
 355    }
 356
 357    fn chat_with_follow(
 358        &mut self,
 359        _: &ChatWithFollow,
 360        window: &mut Window,
 361        cx: &mut Context<Self>,
 362    ) {
 363        self.workspace
 364            .update(cx, |this, cx| {
 365                this.follow(CollaboratorId::Agent, window, cx)
 366            })
 367            .log_err();
 368
 369        self.chat(&Chat, window, cx);
 370    }
 371
 372    fn is_editor_empty(&self, cx: &App) -> bool {
 373        self.editor.read(cx).text(cx).trim().is_empty()
 374    }
 375
 376    pub fn is_editor_fully_empty(&self, cx: &App) -> bool {
 377        self.editor.read(cx).is_empty(cx)
 378    }
 379
 380    fn send_to_model(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 381        let Some(ConfiguredModel { model, provider }) = self
 382            .thread
 383            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx))
 384        else {
 385            return;
 386        };
 387
 388        if provider.must_accept_terms(cx) {
 389            cx.notify();
 390            return;
 391        }
 392
 393        let (user_message, user_message_creases) = self.editor.update(cx, |editor, cx| {
 394            let creases = extract_message_creases(editor, cx);
 395            let text = editor.text(cx);
 396            editor.clear(window, cx);
 397            (text, creases)
 398        });
 399
 400        self.last_estimated_token_count.take();
 401        cx.emit(MessageEditorEvent::EstimatedTokenCount);
 402
 403        let thread = self.thread.clone();
 404        let git_store = self.project.read(cx).git_store().clone();
 405        let checkpoint = git_store.update(cx, |git_store, cx| git_store.checkpoint(cx));
 406        let context_task = self.reload_context(cx);
 407        let window_handle = window.window_handle();
 408
 409        cx.spawn(async move |_this, cx| {
 410            let (checkpoint, loaded_context) = future::join(checkpoint, context_task).await;
 411            let loaded_context = loaded_context.unwrap_or_default();
 412
 413            thread
 414                .update(cx, |thread, cx| {
 415                    thread.insert_user_message(
 416                        user_message,
 417                        loaded_context,
 418                        checkpoint.ok(),
 419                        user_message_creases,
 420                        cx,
 421                    );
 422                })
 423                .log_err();
 424
 425            thread
 426                .update(cx, |thread, cx| {
 427                    thread.advance_prompt_id();
 428                    thread.send_to_model(
 429                        model,
 430                        CompletionIntent::UserPrompt,
 431                        Some(window_handle),
 432                        cx,
 433                    );
 434                })
 435                .log_err();
 436        })
 437        .detach();
 438    }
 439
 440    fn stop_current_and_send_new_message(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 441        self.thread.update(cx, |thread, cx| {
 442            thread.cancel_editing(cx);
 443        });
 444
 445        let canceled = self.thread.update(cx, |thread, cx| {
 446            thread.cancel_last_completion(Some(window.window_handle()), cx)
 447        });
 448
 449        if canceled {
 450            self.set_editor_is_expanded(false, cx);
 451            self.send_to_model(window, cx);
 452        }
 453    }
 454
 455    fn handle_context_strip_event(
 456        &mut self,
 457        _context_strip: &Entity<ContextStrip>,
 458        event: &ContextStripEvent,
 459        window: &mut Window,
 460        cx: &mut Context<Self>,
 461    ) {
 462        match event {
 463            ContextStripEvent::PickerDismissed
 464            | ContextStripEvent::BlurredEmpty
 465            | ContextStripEvent::BlurredDown => {
 466                let editor_focus_handle = self.editor.focus_handle(cx);
 467                window.focus(&editor_focus_handle);
 468            }
 469            ContextStripEvent::BlurredUp => {}
 470        }
 471    }
 472
 473    fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
 474        if self.context_picker_menu_handle.is_deployed() {
 475            cx.propagate();
 476        } else if self.context_strip.read(cx).has_context_items(cx) {
 477            self.context_strip.focus_handle(cx).focus(window);
 478        }
 479    }
 480
 481    fn paste(&mut self, _: &Paste, _: &mut Window, cx: &mut Context<Self>) {
 482        crate::active_thread::attach_pasted_images_as_context(&self.context_store, cx);
 483    }
 484
 485    fn handle_review_click(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 486        self.edits_expanded = true;
 487        AgentDiffPane::deploy(self.thread.clone(), self.workspace.clone(), window, cx).log_err();
 488        cx.notify();
 489    }
 490
 491    fn handle_edit_bar_expand(&mut self, cx: &mut Context<Self>) {
 492        self.edits_expanded = !self.edits_expanded;
 493        cx.notify();
 494    }
 495
 496    fn handle_file_click(
 497        &self,
 498        buffer: Entity<Buffer>,
 499        window: &mut Window,
 500        cx: &mut Context<Self>,
 501    ) {
 502        if let Ok(diff) = AgentDiffPane::deploy(
 503            AgentDiffThread::Native(self.thread.clone()),
 504            self.workspace.clone(),
 505            window,
 506            cx,
 507        ) {
 508            let path_key = multi_buffer::PathKey::for_buffer(&buffer, cx);
 509            diff.update(cx, |diff, cx| diff.move_to_path(path_key, window, cx));
 510        }
 511    }
 512
 513    pub fn toggle_burn_mode(
 514        &mut self,
 515        _: &ToggleBurnMode,
 516        _window: &mut Window,
 517        cx: &mut Context<Self>,
 518    ) {
 519        self.thread.update(cx, |thread, _cx| {
 520            let active_completion_mode = thread.completion_mode();
 521
 522            thread.set_completion_mode(match active_completion_mode {
 523                CompletionMode::Burn => CompletionMode::Normal,
 524                CompletionMode::Normal => CompletionMode::Burn,
 525            });
 526        });
 527    }
 528
 529    fn handle_accept_all(&mut self, _window: &mut Window, cx: &mut Context<Self>) {
 530        if self.thread.read(cx).has_pending_edit_tool_uses() {
 531            return;
 532        }
 533
 534        self.thread.update(cx, |thread, cx| {
 535            thread.keep_all_edits(cx);
 536        });
 537        cx.notify();
 538    }
 539
 540    fn handle_reject_all(&mut self, _window: &mut Window, cx: &mut Context<Self>) {
 541        if self.thread.read(cx).has_pending_edit_tool_uses() {
 542            return;
 543        }
 544
 545        // Since there's no reject_all_edits method in the thread API,
 546        // we need to iterate through all buffers and reject their edits
 547        let action_log = self.thread.read(cx).action_log().clone();
 548        let changed_buffers = action_log.read(cx).changed_buffers(cx);
 549
 550        for (buffer, _) in changed_buffers {
 551            self.thread.update(cx, |thread, cx| {
 552                let buffer_snapshot = buffer.read(cx);
 553                let start = buffer_snapshot.anchor_before(Point::new(0, 0));
 554                let end = buffer_snapshot.anchor_after(buffer_snapshot.max_point());
 555                thread
 556                    .reject_edits_in_ranges(buffer, vec![start..end], cx)
 557                    .detach();
 558            });
 559        }
 560        cx.notify();
 561    }
 562
 563    fn handle_reject_file_changes(
 564        &mut self,
 565        buffer: Entity<Buffer>,
 566        _window: &mut Window,
 567        cx: &mut Context<Self>,
 568    ) {
 569        if self.thread.read(cx).has_pending_edit_tool_uses() {
 570            return;
 571        }
 572
 573        self.thread.update(cx, |thread, cx| {
 574            let buffer_snapshot = buffer.read(cx);
 575            let start = buffer_snapshot.anchor_before(Point::new(0, 0));
 576            let end = buffer_snapshot.anchor_after(buffer_snapshot.max_point());
 577            thread
 578                .reject_edits_in_ranges(buffer, vec![start..end], cx)
 579                .detach();
 580        });
 581        cx.notify();
 582    }
 583
 584    fn handle_accept_file_changes(
 585        &mut self,
 586        buffer: Entity<Buffer>,
 587        _window: &mut Window,
 588        cx: &mut Context<Self>,
 589    ) {
 590        if self.thread.read(cx).has_pending_edit_tool_uses() {
 591            return;
 592        }
 593
 594        self.thread.update(cx, |thread, cx| {
 595            let buffer_snapshot = buffer.read(cx);
 596            let start = buffer_snapshot.anchor_before(Point::new(0, 0));
 597            let end = buffer_snapshot.anchor_after(buffer_snapshot.max_point());
 598            thread.keep_edits_in_range(buffer, start..end, cx);
 599        });
 600        cx.notify();
 601    }
 602
 603    fn render_burn_mode_toggle(&self, cx: &mut Context<Self>) -> Option<AnyElement> {
 604        let thread = self.thread.read(cx);
 605        let model = thread.configured_model();
 606        if !model?.model.supports_burn_mode() {
 607            return None;
 608        }
 609
 610        let active_completion_mode = thread.completion_mode();
 611        let burn_mode_enabled = active_completion_mode == CompletionMode::Burn;
 612        let icon = if burn_mode_enabled {
 613            IconName::ZedBurnModeOn
 614        } else {
 615            IconName::ZedBurnMode
 616        };
 617
 618        Some(
 619            IconButton::new("burn-mode", icon)
 620                .icon_size(IconSize::Small)
 621                .icon_color(Color::Muted)
 622                .toggle_state(burn_mode_enabled)
 623                .selected_icon_color(Color::Error)
 624                .on_click(cx.listener(|this, _event, window, cx| {
 625                    this.toggle_burn_mode(&ToggleBurnMode, window, cx);
 626                }))
 627                .tooltip(move |_window, cx| {
 628                    cx.new(|_| BurnModeTooltip::new().selected(burn_mode_enabled))
 629                        .into()
 630                })
 631                .into_any_element(),
 632        )
 633    }
 634
 635    fn render_follow_toggle(
 636        &self,
 637        is_model_selected: bool,
 638        cx: &mut Context<Self>,
 639    ) -> impl IntoElement {
 640        let following = self
 641            .workspace
 642            .read_with(cx, |workspace, _| {
 643                workspace.is_being_followed(CollaboratorId::Agent)
 644            })
 645            .unwrap_or(false);
 646
 647        IconButton::new("follow-agent", IconName::Crosshair)
 648            .disabled(!is_model_selected)
 649            .icon_size(IconSize::Small)
 650            .icon_color(Color::Muted)
 651            .toggle_state(following)
 652            .selected_icon_color(Some(Color::Custom(cx.theme().players().agent().cursor)))
 653            .tooltip(move |window, cx| {
 654                if following {
 655                    Tooltip::for_action("Stop Following Agent", &Follow, window, cx)
 656                } else {
 657                    Tooltip::with_meta(
 658                        "Follow Agent",
 659                        Some(&Follow),
 660                        "Track the agent's location as it reads and edits files.",
 661                        window,
 662                        cx,
 663                    )
 664                }
 665            })
 666            .on_click(cx.listener(move |this, _, window, cx| {
 667                this.workspace
 668                    .update(cx, |workspace, cx| {
 669                        if following {
 670                            workspace.unfollow(CollaboratorId::Agent, window, cx);
 671                        } else {
 672                            workspace.follow(CollaboratorId::Agent, window, cx);
 673                        }
 674                    })
 675                    .ok();
 676            }))
 677    }
 678
 679    fn render_editor(&self, window: &mut Window, cx: &mut Context<Self>) -> Div {
 680        let thread = self.thread.read(cx);
 681        let model = thread.configured_model();
 682
 683        let editor_bg_color = cx.theme().colors().editor_background;
 684        let is_generating = thread.is_generating();
 685        let focus_handle = self.editor.focus_handle(cx);
 686
 687        let is_model_selected = model.is_some();
 688        let is_editor_empty = self.is_editor_empty(cx);
 689
 690        let incompatible_tools = model
 691            .as_ref()
 692            .map(|model| {
 693                self.incompatible_tools_state.update(cx, |state, cx| {
 694                    state.incompatible_tools(&model.model, cx).to_vec()
 695                })
 696            })
 697            .unwrap_or_default();
 698
 699        let is_editor_expanded = self.editor_is_expanded;
 700        let expand_icon = if is_editor_expanded {
 701            IconName::Minimize
 702        } else {
 703            IconName::Maximize
 704        };
 705
 706        v_flex()
 707            .key_context("MessageEditor")
 708            .on_action(cx.listener(Self::chat))
 709            .on_action(cx.listener(Self::chat_with_follow))
 710            .on_action(cx.listener(|this, _: &ToggleProfileSelector, window, cx| {
 711                this.profile_selector
 712                    .read(cx)
 713                    .menu_handle()
 714                    .toggle(window, cx);
 715            }))
 716            .on_action(cx.listener(|this, _: &ToggleModelSelector, window, cx| {
 717                this.model_selector
 718                    .update(cx, |model_selector, cx| model_selector.toggle(window, cx));
 719            }))
 720            .on_action(cx.listener(Self::toggle_context_picker))
 721            .on_action(cx.listener(Self::remove_all_context))
 722            .on_action(cx.listener(Self::move_up))
 723            .on_action(cx.listener(Self::expand_message_editor))
 724            .on_action(cx.listener(Self::toggle_burn_mode))
 725            .on_action(
 726                cx.listener(|this, _: &KeepAll, window, cx| this.handle_accept_all(window, cx)),
 727            )
 728            .on_action(
 729                cx.listener(|this, _: &RejectAll, window, cx| this.handle_reject_all(window, cx)),
 730            )
 731            .capture_action(cx.listener(Self::paste))
 732            .p_2()
 733            .gap_2()
 734            .border_t_1()
 735            .border_color(cx.theme().colors().border)
 736            .bg(editor_bg_color)
 737            .child(
 738                h_flex()
 739                    .justify_between()
 740                    .child(self.context_strip.clone())
 741                    .when(focus_handle.is_focused(window), |this| {
 742                        this.child(
 743                            IconButton::new("toggle-height", expand_icon)
 744                                .icon_size(IconSize::Small)
 745                                .icon_color(Color::Muted)
 746                                .tooltip({
 747                                    let focus_handle = focus_handle.clone();
 748                                    move |window, cx| {
 749                                        let expand_label = if is_editor_expanded {
 750                                            "Minimize Message Editor".to_string()
 751                                        } else {
 752                                            "Expand Message Editor".to_string()
 753                                        };
 754
 755                                        Tooltip::for_action_in(
 756                                            expand_label,
 757                                            &ExpandMessageEditor,
 758                                            &focus_handle,
 759                                            window,
 760                                            cx,
 761                                        )
 762                                    }
 763                                })
 764                                .on_click(cx.listener(|_, _, window, cx| {
 765                                    window.dispatch_action(Box::new(ExpandMessageEditor), cx);
 766                                })),
 767                        )
 768                    }),
 769            )
 770            .child(
 771                v_flex()
 772                    .size_full()
 773                    .gap_1()
 774                    .when(is_editor_expanded, |this| {
 775                        this.h(vh(0.8, window)).justify_between()
 776                    })
 777                    .child({
 778                        let settings = ThemeSettings::get_global(cx);
 779                        let font_size = TextSize::Small
 780                            .rems(cx)
 781                            .to_pixels(settings.agent_font_size(cx));
 782                        let line_height = settings.buffer_line_height.value() * font_size;
 783
 784                        let text_style = TextStyle {
 785                            color: cx.theme().colors().text,
 786                            font_family: settings.buffer_font.family.clone(),
 787                            font_fallbacks: settings.buffer_font.fallbacks.clone(),
 788                            font_features: settings.buffer_font.features.clone(),
 789                            font_size: font_size.into(),
 790                            line_height: line_height.into(),
 791                            ..Default::default()
 792                        };
 793
 794                        EditorElement::new(
 795                            &self.editor,
 796                            EditorStyle {
 797                                background: editor_bg_color,
 798                                local_player: cx.theme().players().local(),
 799                                text: text_style,
 800                                syntax: cx.theme().syntax().clone(),
 801                                ..Default::default()
 802                            },
 803                        )
 804                        .into_any()
 805                    })
 806                    .child(
 807                        h_flex()
 808                            .flex_none()
 809                            .flex_wrap()
 810                            .justify_between()
 811                            .child(
 812                                h_flex()
 813                                    .child(self.render_follow_toggle(is_model_selected, cx))
 814                                    .children(self.render_burn_mode_toggle(cx)),
 815                            )
 816                            .child(
 817                                h_flex()
 818                                    .gap_1()
 819                                    .flex_wrap()
 820                                    .when(!incompatible_tools.is_empty(), |this| {
 821                                        this.child(
 822                                            IconButton::new(
 823                                                "tools-incompatible-warning",
 824                                                IconName::Warning,
 825                                            )
 826                                            .icon_color(Color::Warning)
 827                                            .icon_size(IconSize::Small)
 828                                            .tooltip({
 829                                                move |_, cx| {
 830                                                    cx.new(|_| IncompatibleToolsTooltip {
 831                                                        incompatible_tools: incompatible_tools
 832                                                            .clone(),
 833                                                    })
 834                                                    .into()
 835                                                }
 836                                            }),
 837                                        )
 838                                    })
 839                                    .child(self.profile_selector.clone())
 840                                    .child(self.model_selector.clone())
 841                                    .map({
 842                                        let focus_handle = focus_handle.clone();
 843                                        move |parent| {
 844                                            if is_generating {
 845                                                parent
 846                                                    .when(is_editor_empty, |parent| {
 847                                                        parent.child(
 848                                                            IconButton::new(
 849                                                                "stop-generation",
 850                                                                IconName::Stop,
 851                                                            )
 852                                                            .icon_color(Color::Error)
 853                                                            .style(ButtonStyle::Tinted(
 854                                                                ui::TintColor::Error,
 855                                                            ))
 856                                                            .tooltip(move |window, cx| {
 857                                                                Tooltip::for_action(
 858                                                                    "Stop Generation",
 859                                                                    &editor::actions::Cancel,
 860                                                                    window,
 861                                                                    cx,
 862                                                                )
 863                                                            })
 864                                                            .on_click({
 865                                                                let focus_handle =
 866                                                                    focus_handle.clone();
 867                                                                move |_event, window, cx| {
 868                                                                    focus_handle.dispatch_action(
 869                                                                        &editor::actions::Cancel,
 870                                                                        window,
 871                                                                        cx,
 872                                                                    );
 873                                                                }
 874                                                            })
 875                                                            .with_animation(
 876                                                                "pulsating-label",
 877                                                                Animation::new(
 878                                                                    Duration::from_secs(2),
 879                                                                )
 880                                                                .repeat()
 881                                                                .with_easing(pulsating_between(
 882                                                                    0.4, 1.0,
 883                                                                )),
 884                                                                |icon_button, delta| {
 885                                                                    icon_button.alpha(delta)
 886                                                                },
 887                                                            ),
 888                                                        )
 889                                                    })
 890                                                    .when(!is_editor_empty, |parent| {
 891                                                        parent.child(
 892                                                            IconButton::new(
 893                                                                "send-message",
 894                                                                IconName::Send,
 895                                                            )
 896                                                            .icon_color(Color::Accent)
 897                                                            .style(ButtonStyle::Filled)
 898                                                            .disabled(!is_model_selected)
 899                                                            .on_click({
 900                                                                let focus_handle =
 901                                                                    focus_handle.clone();
 902                                                                move |_event, window, cx| {
 903                                                                    focus_handle.dispatch_action(
 904                                                                        &Chat, window, cx,
 905                                                                    );
 906                                                                }
 907                                                            })
 908                                                            .tooltip(move |window, cx| {
 909                                                                Tooltip::for_action(
 910                                                                    "Stop and Send New Message",
 911                                                                    &Chat,
 912                                                                    window,
 913                                                                    cx,
 914                                                                )
 915                                                            }),
 916                                                        )
 917                                                    })
 918                                            } else {
 919                                                parent.child(
 920                                                    IconButton::new("send-message", IconName::Send)
 921                                                        .icon_color(Color::Accent)
 922                                                        .style(ButtonStyle::Filled)
 923                                                        .disabled(
 924                                                            is_editor_empty || !is_model_selected,
 925                                                        )
 926                                                        .on_click({
 927                                                            let focus_handle = focus_handle.clone();
 928                                                            move |_event, window, cx| {
 929                                                                telemetry::event!(
 930                                                                    "Agent Message Sent",
 931                                                                    agent = "zed",
 932                                                                );
 933                                                                focus_handle.dispatch_action(
 934                                                                    &Chat, window, cx,
 935                                                                );
 936                                                            }
 937                                                        })
 938                                                        .when(
 939                                                            !is_editor_empty && is_model_selected,
 940                                                            |button| {
 941                                                                button.tooltip(move |window, cx| {
 942                                                                    Tooltip::for_action(
 943                                                                        "Send", &Chat, window, cx,
 944                                                                    )
 945                                                                })
 946                                                            },
 947                                                        )
 948                                                        .when(is_editor_empty, |button| {
 949                                                            button.tooltip(Tooltip::text(
 950                                                                "Type a message to submit",
 951                                                            ))
 952                                                        })
 953                                                        .when(!is_model_selected, |button| {
 954                                                            button.tooltip(Tooltip::text(
 955                                                                "Select a model to continue",
 956                                                            ))
 957                                                        }),
 958                                                )
 959                                            }
 960                                        }
 961                                    }),
 962                            ),
 963                    ),
 964            )
 965    }
 966
 967    fn render_edits_bar(
 968        &self,
 969        changed_buffers: &BTreeMap<Entity<Buffer>, Entity<BufferDiff>>,
 970        window: &mut Window,
 971        cx: &mut Context<Self>,
 972    ) -> Div {
 973        let focus_handle = self.editor.focus_handle(cx);
 974
 975        let editor_bg_color = cx.theme().colors().editor_background;
 976        let border_color = cx.theme().colors().border;
 977        let active_color = cx.theme().colors().element_selected;
 978        let bg_edit_files_disclosure = editor_bg_color.blend(active_color.opacity(0.3));
 979
 980        let is_edit_changes_expanded = self.edits_expanded;
 981        let thread = self.thread.read(cx);
 982        let pending_edits = thread.has_pending_edit_tool_uses();
 983
 984        const EDIT_NOT_READY_TOOLTIP_LABEL: &str = "Wait until file edits are complete.";
 985
 986        v_flex()
 987            .mt_1()
 988            .mx_2()
 989            .bg(bg_edit_files_disclosure)
 990            .border_1()
 991            .border_b_0()
 992            .border_color(border_color)
 993            .rounded_t_md()
 994            .shadow(vec![gpui::BoxShadow {
 995                color: gpui::black().opacity(0.15),
 996                offset: point(px(1.), px(-1.)),
 997                blur_radius: px(3.),
 998                spread_radius: px(0.),
 999            }])
1000            .child(
1001                h_flex()
1002                    .p_1()
1003                    .justify_between()
1004                    .when(is_edit_changes_expanded, |this| {
1005                        this.border_b_1().border_color(border_color)
1006                    })
1007                    .child(
1008                        h_flex()
1009                            .id("edits-container")
1010                            .cursor_pointer()
1011                            .w_full()
1012                            .gap_1()
1013                            .child(
1014                                Disclosure::new("edits-disclosure", is_edit_changes_expanded)
1015                                    .on_click(cx.listener(|this, _, _, cx| {
1016                                        this.handle_edit_bar_expand(cx)
1017                                    })),
1018                            )
1019                            .map(|this| {
1020                                if pending_edits {
1021                                    this.child(
1022                                        Label::new(format!(
1023                                            "Editing {} {}…",
1024                                            changed_buffers.len(),
1025                                            if changed_buffers.len() == 1 {
1026                                                "file"
1027                                            } else {
1028                                                "files"
1029                                            }
1030                                        ))
1031                                        .color(Color::Muted)
1032                                        .size(LabelSize::Small)
1033                                        .with_animation(
1034                                            "edit-label",
1035                                            Animation::new(Duration::from_secs(2))
1036                                                .repeat()
1037                                                .with_easing(pulsating_between(0.3, 0.7)),
1038                                            |label, delta| label.alpha(delta),
1039                                        ),
1040                                    )
1041                                } else {
1042                                    this.child(
1043                                        Label::new("Edits")
1044                                            .size(LabelSize::Small)
1045                                            .color(Color::Muted),
1046                                    )
1047                                    .child(
1048                                        Label::new("•").size(LabelSize::XSmall).color(Color::Muted),
1049                                    )
1050                                    .child(
1051                                        Label::new(format!(
1052                                            "{} {}",
1053                                            changed_buffers.len(),
1054                                            if changed_buffers.len() == 1 {
1055                                                "file"
1056                                            } else {
1057                                                "files"
1058                                            }
1059                                        ))
1060                                        .size(LabelSize::Small)
1061                                        .color(Color::Muted),
1062                                    )
1063                                }
1064                            })
1065                            .on_click(
1066                                cx.listener(|this, _, _, cx| this.handle_edit_bar_expand(cx)),
1067                            ),
1068                    )
1069                    .child(
1070                        h_flex()
1071                            .gap_1()
1072                            .child(
1073                                IconButton::new("review-changes", IconName::ListTodo)
1074                                    .icon_size(IconSize::Small)
1075                                    .tooltip({
1076                                        let focus_handle = focus_handle.clone();
1077                                        move |window, cx| {
1078                                            Tooltip::for_action_in(
1079                                                "Review Changes",
1080                                                &OpenAgentDiff,
1081                                                &focus_handle,
1082                                                window,
1083                                                cx,
1084                                            )
1085                                        }
1086                                    })
1087                                    .on_click(cx.listener(|this, _, window, cx| {
1088                                        this.handle_review_click(window, cx)
1089                                    })),
1090                            )
1091                            .child(Divider::vertical().color(DividerColor::Border))
1092                            .child(
1093                                Button::new("reject-all-changes", "Reject All")
1094                                    .label_size(LabelSize::Small)
1095                                    .disabled(pending_edits)
1096                                    .when(pending_edits, |this| {
1097                                        this.tooltip(Tooltip::text(EDIT_NOT_READY_TOOLTIP_LABEL))
1098                                    })
1099                                    .key_binding(
1100                                        KeyBinding::for_action_in(
1101                                            &RejectAll,
1102                                            &focus_handle.clone(),
1103                                            window,
1104                                            cx,
1105                                        )
1106                                        .map(|kb| kb.size(rems_from_px(10.))),
1107                                    )
1108                                    .on_click(cx.listener(|this, _, window, cx| {
1109                                        this.handle_reject_all(window, cx)
1110                                    })),
1111                            )
1112                            .child(
1113                                Button::new("accept-all-changes", "Accept All")
1114                                    .label_size(LabelSize::Small)
1115                                    .disabled(pending_edits)
1116                                    .when(pending_edits, |this| {
1117                                        this.tooltip(Tooltip::text(EDIT_NOT_READY_TOOLTIP_LABEL))
1118                                    })
1119                                    .key_binding(
1120                                        KeyBinding::for_action_in(
1121                                            &KeepAll,
1122                                            &focus_handle,
1123                                            window,
1124                                            cx,
1125                                        )
1126                                        .map(|kb| kb.size(rems_from_px(10.))),
1127                                    )
1128                                    .on_click(cx.listener(|this, _, window, cx| {
1129                                        this.handle_accept_all(window, cx)
1130                                    })),
1131                            ),
1132                    ),
1133            )
1134            .when(is_edit_changes_expanded, |parent| {
1135                parent.child(
1136                    v_flex().children(changed_buffers.iter().enumerate().flat_map(
1137                        |(index, (buffer, _diff))| {
1138                            let file = buffer.read(cx).file()?;
1139                            let path = file.path();
1140
1141                            let file_path = path.parent().and_then(|parent| {
1142                                let parent_str = parent.to_string_lossy();
1143
1144                                if parent_str.is_empty() {
1145                                    None
1146                                } else {
1147                                    Some(
1148                                        Label::new(format!(
1149                                            "/{}{}",
1150                                            parent_str,
1151                                            std::path::MAIN_SEPARATOR_STR
1152                                        ))
1153                                        .color(Color::Muted)
1154                                        .size(LabelSize::XSmall)
1155                                        .buffer_font(cx),
1156                                    )
1157                                }
1158                            });
1159
1160                            let file_name = path.file_name().map(|name| {
1161                                Label::new(name.to_string_lossy().to_string())
1162                                    .size(LabelSize::XSmall)
1163                                    .buffer_font(cx)
1164                            });
1165
1166                            let file_icon = FileIcons::get_icon(path, cx)
1167                                .map(Icon::from_path)
1168                                .map(|icon| icon.color(Color::Muted).size(IconSize::Small))
1169                                .unwrap_or_else(|| {
1170                                    Icon::new(IconName::File)
1171                                        .color(Color::Muted)
1172                                        .size(IconSize::Small)
1173                                });
1174
1175                            let overlay_gradient = linear_gradient(
1176                                90.,
1177                                linear_color_stop(editor_bg_color, 1.),
1178                                linear_color_stop(editor_bg_color.opacity(0.2), 0.),
1179                            );
1180
1181                            let element = h_flex()
1182                                .group("edited-code")
1183                                .id(("file-container", index))
1184                                .relative()
1185                                .py_1()
1186                                .pl_2()
1187                                .pr_1()
1188                                .gap_2()
1189                                .justify_between()
1190                                .bg(editor_bg_color)
1191                                .when(index < changed_buffers.len() - 1, |parent| {
1192                                    parent.border_color(border_color).border_b_1()
1193                                })
1194                                .child(
1195                                    h_flex()
1196                                        .id(("file-name", index))
1197                                        .pr_8()
1198                                        .gap_1p5()
1199                                        .max_w_full()
1200                                        .overflow_x_scroll()
1201                                        .child(file_icon)
1202                                        .child(
1203                                            h_flex()
1204                                                .gap_0p5()
1205                                                .children(file_name)
1206                                                .children(file_path),
1207                                        )
1208                                        .on_click({
1209                                            let buffer = buffer.clone();
1210                                            cx.listener(move |this, _, window, cx| {
1211                                                this.handle_file_click(buffer.clone(), window, cx);
1212                                            })
1213                                        }), // TODO: Implement line diff
1214                                            // .child(Label::new("+").color(Color::Created))
1215                                            // .child(Label::new("-").color(Color::Deleted)),
1216                                            //
1217                                )
1218                                .child(
1219                                    h_flex()
1220                                        .gap_1()
1221                                        .visible_on_hover("edited-code")
1222                                        .child(
1223                                            Button::new("review", "Review")
1224                                                .label_size(LabelSize::Small)
1225                                                .on_click({
1226                                                    let buffer = buffer.clone();
1227                                                    cx.listener(move |this, _, window, cx| {
1228                                                        this.handle_file_click(
1229                                                            buffer.clone(),
1230                                                            window,
1231                                                            cx,
1232                                                        );
1233                                                    })
1234                                                }),
1235                                        )
1236                                        .child(
1237                                            Divider::vertical().color(DividerColor::BorderVariant),
1238                                        )
1239                                        .child(
1240                                            Button::new("reject-file", "Reject")
1241                                                .label_size(LabelSize::Small)
1242                                                .disabled(pending_edits)
1243                                                .on_click({
1244                                                    let buffer = buffer.clone();
1245                                                    cx.listener(move |this, _, window, cx| {
1246                                                        this.handle_reject_file_changes(
1247                                                            buffer.clone(),
1248                                                            window,
1249                                                            cx,
1250                                                        );
1251                                                    })
1252                                                }),
1253                                        )
1254                                        .child(
1255                                            Button::new("accept-file", "Accept")
1256                                                .label_size(LabelSize::Small)
1257                                                .disabled(pending_edits)
1258                                                .on_click({
1259                                                    let buffer = buffer.clone();
1260                                                    cx.listener(move |this, _, window, cx| {
1261                                                        this.handle_accept_file_changes(
1262                                                            buffer.clone(),
1263                                                            window,
1264                                                            cx,
1265                                                        );
1266                                                    })
1267                                                }),
1268                                        ),
1269                                )
1270                                .child(
1271                                    div()
1272                                        .id("gradient-overlay")
1273                                        .absolute()
1274                                        .h_full()
1275                                        .w_12()
1276                                        .top_0()
1277                                        .bottom_0()
1278                                        .right(px(152.))
1279                                        .bg(overlay_gradient),
1280                                );
1281
1282                            Some(element)
1283                        },
1284                    )),
1285                )
1286            })
1287    }
1288
1289    fn is_using_zed_provider(&self, cx: &App) -> bool {
1290        self.thread
1291            .read(cx)
1292            .configured_model()
1293            .is_some_and(|model| model.provider.id() == ZED_CLOUD_PROVIDER_ID)
1294    }
1295
1296    fn render_usage_callout(&self, line_height: Pixels, cx: &mut Context<Self>) -> Option<Div> {
1297        if !self.is_using_zed_provider(cx) {
1298            return None;
1299        }
1300
1301        let user_store = self.project.read(cx).user_store().read(cx);
1302        if user_store.is_usage_based_billing_enabled() {
1303            return None;
1304        }
1305
1306        let plan = user_store.plan().unwrap_or(cloud_llm_client::Plan::ZedFree);
1307
1308        let usage = user_store.model_request_usage()?;
1309
1310        Some(
1311            div()
1312                .child(UsageCallout::new(plan, usage))
1313                .line_height(line_height),
1314        )
1315    }
1316
1317    fn render_token_limit_callout(
1318        &self,
1319        line_height: Pixels,
1320        token_usage_ratio: TokenUsageRatio,
1321        cx: &mut Context<Self>,
1322    ) -> Option<Div> {
1323        let (icon, severity) = if token_usage_ratio == TokenUsageRatio::Exceeded {
1324            (IconName::Close, Severity::Error)
1325        } else {
1326            (IconName::Warning, Severity::Warning)
1327        };
1328
1329        let title = if token_usage_ratio == TokenUsageRatio::Exceeded {
1330            "Thread reached the token limit"
1331        } else {
1332            "Thread reaching the token limit soon"
1333        };
1334
1335        let description = if self.is_using_zed_provider(cx) {
1336            "To continue, start a new thread from a summary or turn burn mode on."
1337        } else {
1338            "To continue, start a new thread from a summary."
1339        };
1340
1341        let callout = Callout::new()
1342            .line_height(line_height)
1343            .severity(severity)
1344            .icon(icon)
1345            .title(title)
1346            .description(description)
1347            .actions_slot(
1348                h_flex()
1349                    .gap_0p5()
1350                    .when(self.is_using_zed_provider(cx), |this| {
1351                        this.child(
1352                            IconButton::new("burn-mode-callout", IconName::ZedBurnMode)
1353                                .icon_size(IconSize::XSmall)
1354                                .on_click(cx.listener(|this, _event, window, cx| {
1355                                    this.toggle_burn_mode(&ToggleBurnMode, window, cx);
1356                                })),
1357                        )
1358                    })
1359                    .child(
1360                        Button::new("start-new-thread", "Start New Thread")
1361                            .label_size(LabelSize::Small)
1362                            .on_click(cx.listener(|this, _, window, cx| {
1363                                let from_thread_id = Some(this.thread.read(cx).id().clone());
1364                                window.dispatch_action(Box::new(NewThread { from_thread_id }), cx);
1365                            })),
1366                    ),
1367            );
1368
1369        Some(
1370            div()
1371                .border_t_1()
1372                .border_color(cx.theme().colors().border)
1373                .child(callout),
1374        )
1375    }
1376
1377    pub fn last_estimated_token_count(&self) -> Option<u64> {
1378        self.last_estimated_token_count
1379    }
1380
1381    pub fn is_waiting_to_update_token_count(&self) -> bool {
1382        self.update_token_count_task.is_some()
1383    }
1384
1385    fn reload_context(&mut self, cx: &mut Context<Self>) -> Task<Option<ContextLoadResult>> {
1386        let load_task = cx.spawn(async move |this, cx| {
1387            let Ok(load_task) = this.update(cx, |this, cx| {
1388                let new_context = this
1389                    .context_store
1390                    .read(cx)
1391                    .new_context_for_thread(this.thread.read(cx), None);
1392                load_context(new_context, &this.project, &this.prompt_store, cx)
1393            }) else {
1394                return;
1395            };
1396            let result = load_task.await;
1397            this.update(cx, |this, cx| {
1398                this.last_loaded_context = Some(result);
1399                this.load_context_task = None;
1400                this.message_or_context_changed(false, cx);
1401            })
1402            .ok();
1403        });
1404        // Replace existing load task, if any, causing it to be canceled.
1405        let load_task = load_task.shared();
1406        self.load_context_task = Some(load_task.clone());
1407        cx.spawn(async move |this, cx| {
1408            load_task.await;
1409            this.read_with(cx, |this, _cx| this.last_loaded_context.clone())
1410                .ok()
1411                .flatten()
1412        })
1413    }
1414
1415    fn handle_message_changed(&mut self, cx: &mut Context<Self>) {
1416        self.message_or_context_changed(true, cx);
1417    }
1418
1419    fn message_or_context_changed(&mut self, debounce: bool, cx: &mut Context<Self>) {
1420        cx.emit(MessageEditorEvent::Changed);
1421        self.update_token_count_task.take();
1422
1423        let Some(model) = self.thread.read(cx).configured_model() else {
1424            self.last_estimated_token_count.take();
1425            return;
1426        };
1427
1428        let editor = self.editor.clone();
1429
1430        self.update_token_count_task = Some(cx.spawn(async move |this, cx| {
1431            if debounce {
1432                cx.background_executor()
1433                    .timer(Duration::from_millis(200))
1434                    .await;
1435            }
1436
1437            let token_count = if let Some(task) = this
1438                .update(cx, |this, cx| {
1439                    let loaded_context = this
1440                        .last_loaded_context
1441                        .as_ref()
1442                        .map(|context_load_result| &context_load_result.loaded_context);
1443                    let message_text = editor.read(cx).text(cx);
1444
1445                    if message_text.is_empty()
1446                        && loaded_context.is_none_or(|loaded_context| loaded_context.is_empty())
1447                    {
1448                        return None;
1449                    }
1450
1451                    let mut request_message = LanguageModelRequestMessage {
1452                        role: language_model::Role::User,
1453                        content: Vec::new(),
1454                        cache: false,
1455                    };
1456
1457                    if let Some(loaded_context) = loaded_context {
1458                        loaded_context.add_to_request_message(&mut request_message);
1459                    }
1460
1461                    if !message_text.is_empty() {
1462                        request_message
1463                            .content
1464                            .push(MessageContent::Text(message_text));
1465                    }
1466
1467                    let request = language_model::LanguageModelRequest {
1468                        thread_id: None,
1469                        prompt_id: None,
1470                        intent: None,
1471                        mode: None,
1472                        messages: vec![request_message],
1473                        tools: vec![],
1474                        tool_choice: None,
1475                        stop: vec![],
1476                        temperature: AgentSettings::temperature_for_model(&model.model, cx),
1477                        thinking_allowed: true,
1478                    };
1479
1480                    Some(model.model.count_tokens(request, cx))
1481                })
1482                .ok()
1483                .flatten()
1484            {
1485                task.await.log_err()
1486            } else {
1487                Some(0)
1488            };
1489
1490            this.update(cx, |this, cx| {
1491                if let Some(token_count) = token_count {
1492                    this.last_estimated_token_count = Some(token_count);
1493                    cx.emit(MessageEditorEvent::EstimatedTokenCount);
1494                }
1495                this.update_token_count_task.take();
1496            })
1497            .ok();
1498        }));
1499    }
1500}
1501
1502#[derive(Default)]
1503pub struct ContextCreasesAddon {
1504    creases: HashMap<AgentContextKey, Vec<(CreaseId, SharedString)>>,
1505    _subscription: Option<Subscription>,
1506}
1507
1508pub struct MessageEditorAddon {}
1509
1510impl MessageEditorAddon {
1511    pub fn new() -> Self {
1512        Self {}
1513    }
1514}
1515
1516impl Addon for MessageEditorAddon {
1517    fn to_any(&self) -> &dyn std::any::Any {
1518        self
1519    }
1520
1521    fn to_any_mut(&mut self) -> Option<&mut dyn std::any::Any> {
1522        Some(self)
1523    }
1524
1525    fn extend_key_context(&self, key_context: &mut KeyContext, cx: &App) {
1526        let settings = agent_settings::AgentSettings::get_global(cx);
1527        if settings.use_modifier_to_send {
1528            key_context.add("use_modifier_to_send");
1529        }
1530    }
1531}
1532
1533impl Addon for ContextCreasesAddon {
1534    fn to_any(&self) -> &dyn std::any::Any {
1535        self
1536    }
1537
1538    fn to_any_mut(&mut self) -> Option<&mut dyn std::any::Any> {
1539        Some(self)
1540    }
1541}
1542
1543impl ContextCreasesAddon {
1544    pub fn new() -> Self {
1545        Self {
1546            creases: HashMap::default(),
1547            _subscription: None,
1548        }
1549    }
1550
1551    pub fn add_creases(
1552        &mut self,
1553        context_store: &Entity<ContextStore>,
1554        key: AgentContextKey,
1555        creases: impl IntoIterator<Item = (CreaseId, SharedString)>,
1556        cx: &mut Context<Editor>,
1557    ) {
1558        self.creases.entry(key).or_default().extend(creases);
1559        self._subscription = Some(
1560            cx.subscribe(context_store, |editor, _, event, cx| match event {
1561                ContextStoreEvent::ContextRemoved(key) => {
1562                    let Some(this) = editor.addon_mut::<Self>() else {
1563                        return;
1564                    };
1565                    let (crease_ids, replacement_texts): (Vec<_>, Vec<_>) = this
1566                        .creases
1567                        .remove(key)
1568                        .unwrap_or_default()
1569                        .into_iter()
1570                        .unzip();
1571                    let ranges = editor
1572                        .remove_creases(crease_ids, cx)
1573                        .into_iter()
1574                        .map(|(_, range)| range)
1575                        .collect::<Vec<_>>();
1576                    editor.unfold_ranges(&ranges, false, false, cx);
1577                    editor.edit(ranges.into_iter().zip(replacement_texts), cx);
1578                    cx.notify();
1579                }
1580            }),
1581        )
1582    }
1583
1584    pub fn into_inner(self) -> HashMap<AgentContextKey, Vec<(CreaseId, SharedString)>> {
1585        self.creases
1586    }
1587}
1588
1589pub fn extract_message_creases(
1590    editor: &mut Editor,
1591    cx: &mut Context<'_, Editor>,
1592) -> Vec<MessageCrease> {
1593    let buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
1594    let mut contexts_by_crease_id = editor
1595        .addon_mut::<ContextCreasesAddon>()
1596        .map(std::mem::take)
1597        .unwrap_or_default()
1598        .into_inner()
1599        .into_iter()
1600        .flat_map(|(key, creases)| {
1601            let context = key.0;
1602            creases
1603                .into_iter()
1604                .map(move |(id, _)| (id, context.clone()))
1605        })
1606        .collect::<HashMap<_, _>>();
1607    // Filter the addon's list of creases based on what the editor reports,
1608    // since the addon might have removed creases in it.
1609
1610    editor.display_map.update(cx, |display_map, cx| {
1611        display_map
1612            .snapshot(cx)
1613            .crease_snapshot
1614            .creases()
1615            .filter_map(|(id, crease)| {
1616                Some((
1617                    id,
1618                    (
1619                        crease.range().to_offset(&buffer_snapshot),
1620                        crease.metadata()?.clone(),
1621                    ),
1622                ))
1623            })
1624            .map(|(id, (range, metadata))| {
1625                let context = contexts_by_crease_id.remove(&id);
1626                MessageCrease {
1627                    range,
1628                    context,
1629                    label: metadata.label,
1630                    icon_path: metadata.icon_path,
1631                }
1632            })
1633            .collect()
1634    })
1635}
1636
1637impl EventEmitter<MessageEditorEvent> for MessageEditor {}
1638
1639pub enum MessageEditorEvent {
1640    EstimatedTokenCount,
1641    Changed,
1642    ScrollThreadToBottom,
1643}
1644
1645impl Focusable for MessageEditor {
1646    fn focus_handle(&self, cx: &App) -> gpui::FocusHandle {
1647        self.editor.focus_handle(cx)
1648    }
1649}
1650
1651impl Render for MessageEditor {
1652    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1653        let thread = self.thread.read(cx);
1654        let token_usage_ratio = thread
1655            .total_token_usage()
1656            .map_or(TokenUsageRatio::Normal, |total_token_usage| {
1657                total_token_usage.ratio()
1658            });
1659
1660        let burn_mode_enabled = thread.completion_mode() == CompletionMode::Burn;
1661
1662        let action_log = self.thread.read(cx).action_log();
1663        let changed_buffers = action_log.read(cx).changed_buffers(cx);
1664
1665        let line_height = TextSize::Small.rems(cx).to_pixels(window.rem_size()) * 1.5;
1666
1667        let has_configured_providers = LanguageModelRegistry::read_global(cx)
1668            .providers()
1669            .iter()
1670            .filter(|provider| {
1671                provider.is_authenticated(cx) && provider.id() != ZED_CLOUD_PROVIDER_ID
1672            })
1673            .count()
1674            > 0;
1675
1676        let is_signed_out = self
1677            .workspace
1678            .read_with(cx, |workspace, _| {
1679                workspace.client().status().borrow().is_signed_out()
1680            })
1681            .unwrap_or(true);
1682
1683        let has_history = self
1684            .history_store
1685            .as_ref()
1686            .and_then(|hs| hs.update(cx, |hs, cx| hs.entries(cx).len() > 0).ok())
1687            .unwrap_or(false)
1688            || self
1689                .thread
1690                .read_with(cx, |thread, _| thread.messages().len() > 0);
1691
1692        v_flex()
1693            .size_full()
1694            .bg(cx.theme().colors().panel_background)
1695            .when(
1696                !has_history && is_signed_out && has_configured_providers,
1697                |this| this.child(cx.new(ApiKeysWithProviders::new)),
1698            )
1699            .when(changed_buffers.len() > 0, |parent| {
1700                parent.child(self.render_edits_bar(&changed_buffers, window, cx))
1701            })
1702            .child(self.render_editor(window, cx))
1703            .children({
1704                let usage_callout = self.render_usage_callout(line_height, cx);
1705
1706                if usage_callout.is_some() {
1707                    usage_callout
1708                } else if token_usage_ratio != TokenUsageRatio::Normal && !burn_mode_enabled {
1709                    self.render_token_limit_callout(line_height, token_usage_ratio, cx)
1710                } else {
1711                    None
1712                }
1713            })
1714    }
1715}
1716
1717pub fn insert_message_creases(
1718    editor: &mut Editor,
1719    message_creases: &[MessageCrease],
1720    context_store: &Entity<ContextStore>,
1721    window: &mut Window,
1722    cx: &mut Context<'_, Editor>,
1723) {
1724    let buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
1725    let creases = message_creases
1726        .iter()
1727        .map(|crease| {
1728            let start = buffer_snapshot.anchor_after(crease.range.start);
1729            let end = buffer_snapshot.anchor_before(crease.range.end);
1730            crease_for_mention(
1731                crease.label.clone(),
1732                crease.icon_path.clone(),
1733                start..end,
1734                cx.weak_entity(),
1735            )
1736        })
1737        .collect::<Vec<_>>();
1738    let ids = editor.insert_creases(creases.clone(), cx);
1739    editor.fold_creases(creases, false, window, cx);
1740    if let Some(addon) = editor.addon_mut::<ContextCreasesAddon>() {
1741        for (crease, id) in message_creases.iter().zip(ids) {
1742            if let Some(context) = crease.context.as_ref() {
1743                let key = AgentContextKey(context.clone());
1744                addon.add_creases(context_store, key, vec![(id, crease.label.clone())], cx);
1745            }
1746        }
1747    }
1748}
1749impl Component for MessageEditor {
1750    fn scope() -> ComponentScope {
1751        ComponentScope::Agent
1752    }
1753
1754    fn description() -> Option<&'static str> {
1755        Some(
1756            "The composer experience of the Agent Panel. This interface handles context, composing messages, switching profiles, models and more.",
1757        )
1758    }
1759}
1760
1761impl AgentPreview for MessageEditor {
1762    fn agent_preview(
1763        workspace: WeakEntity<Workspace>,
1764        active_thread: Entity<ActiveThread>,
1765        window: &mut Window,
1766        cx: &mut App,
1767    ) -> Option<AnyElement> {
1768        if let Some(workspace) = workspace.upgrade() {
1769            let fs = workspace.read(cx).app_state().fs.clone();
1770            let project = workspace.read(cx).project().clone();
1771            let weak_project = project.downgrade();
1772            let context_store = cx.new(|_cx| ContextStore::new(weak_project, None));
1773            let active_thread = active_thread.read(cx);
1774            let thread = active_thread.thread().clone();
1775            let thread_store = active_thread.thread_store().clone();
1776            let text_thread_store = active_thread.text_thread_store().clone();
1777
1778            let default_message_editor = cx.new(|cx| {
1779                MessageEditor::new(
1780                    fs,
1781                    workspace.downgrade(),
1782                    context_store,
1783                    None,
1784                    thread_store.downgrade(),
1785                    text_thread_store.downgrade(),
1786                    None,
1787                    thread,
1788                    window,
1789                    cx,
1790                )
1791            });
1792
1793            Some(
1794                v_flex()
1795                    .gap_4()
1796                    .children(vec![single_example(
1797                        "Default Message Editor",
1798                        div()
1799                            .w(px(540.))
1800                            .pt_12()
1801                            .bg(cx.theme().colors().panel_background)
1802                            .border_1()
1803                            .border_color(cx.theme().colors().border)
1804                            .child(default_message_editor.clone())
1805                            .into_any_element(),
1806                    )])
1807                    .into_any_element(),
1808            )
1809        } else {
1810            None
1811        }
1812    }
1813}
1814
1815register_agent_preview!(MessageEditor);