agent_panel.rs

   1use std::ops::Range;
   2use std::path::Path;
   3use std::rc::Rc;
   4use std::sync::Arc;
   5use std::time::Duration;
   6
   7use agent2::{AcpAgent, Agent as _};
   8use db::kvp::{Dismissable, KEY_VALUE_STORE};
   9use serde::{Deserialize, Serialize};
  10
  11use crate::NewGeminiThread;
  12use crate::language_model_selector::ToggleModelSelector;
  13use crate::{
  14    AddContextServer, AgentDiffPane, ContinueThread, ContinueWithBurnMode,
  15    DeleteRecentlyOpenThread, ExpandMessageEditor, Follow, InlineAssistant, NewTextThread,
  16    NewThread, OpenActiveThreadAsMarkdown, OpenAgentDiff, OpenHistory, ResetTrialEndUpsell,
  17    ResetTrialUpsell, ToggleBurnMode, ToggleContextPicker, ToggleNavigationMenu, ToggleOptionsMenu,
  18    active_thread::{self, ActiveThread, ActiveThreadEvent},
  19    agent_configuration::{AgentConfiguration, AssistantConfigurationEvent},
  20    agent_diff::AgentDiff,
  21    message_editor::{MessageEditor, MessageEditorEvent},
  22    slash_command::SlashCommandCompletionProvider,
  23    text_thread_editor::{
  24        AgentPanelDelegate, TextThreadEditor, humanize_token_count, make_lsp_adapter_delegate,
  25        render_remaining_tokens,
  26    },
  27    thread_history::{HistoryEntryElement, ThreadHistory},
  28    ui::AgentOnboardingModal,
  29};
  30use agent::{
  31    Thread, ThreadError, ThreadEvent, ThreadId, ThreadSummary, TokenUsageRatio,
  32    context_store::ContextStore,
  33    history_store::{HistoryEntryId, HistoryStore},
  34    thread_store::{TextThreadStore, ThreadStore},
  35};
  36use agent_settings::{AgentDockPosition, AgentSettings, CompletionMode, DefaultView};
  37use anyhow::{Result, anyhow};
  38use assistant_context::{AssistantContext, ContextEvent, ContextSummary};
  39use assistant_slash_command::SlashCommandWorkingSet;
  40use assistant_tool::ToolWorkingSet;
  41use client::{UserStore, zed_urls};
  42use editor::{Anchor, AnchorRangeExt as _, Editor, EditorEvent, MultiBuffer};
  43use fs::Fs;
  44use gpui::{
  45    Action, Animation, AnimationExt as _, AnyElement, App, AsyncWindowContext, ClipboardItem,
  46    Corner, DismissEvent, Entity, EventEmitter, ExternalPaths, FocusHandle, Focusable, FontWeight,
  47    KeyContext, Pixels, Subscription, Task, UpdateGlobal, WeakEntity, linear_color_stop,
  48    linear_gradient, prelude::*, pulsating_between,
  49};
  50use language::LanguageRegistry;
  51use language_model::{
  52    ConfigurationError, LanguageModelProviderTosView, LanguageModelRegistry, ZED_CLOUD_PROVIDER_ID,
  53};
  54use project::{Project, ProjectPath, Worktree};
  55use prompt_store::{PromptBuilder, PromptStore, UserPromptId};
  56use proto::Plan;
  57use rules_library::{RulesLibrary, open_rules_library};
  58use search::{BufferSearchBar, buffer_search};
  59use settings::{Settings, update_settings_file};
  60use theme::ThemeSettings;
  61use time::UtcOffset;
  62use ui::utils::WithRemSize;
  63use ui::{
  64    Banner, CheckboxWithLabel, ContextMenu, ElevationIndex, KeyBinding, PopoverMenu,
  65    PopoverMenuHandle, ProgressBar, Tab, Tooltip, Vector, VectorName, prelude::*,
  66};
  67use util::ResultExt as _;
  68use workspace::{
  69    CollaboratorId, DraggedSelection, DraggedTab, ToggleZoom, ToolbarItemView, Workspace,
  70    dock::{DockPosition, Panel, PanelEvent},
  71};
  72use zed_actions::{
  73    DecreaseBufferFontSize, IncreaseBufferFontSize, ResetBufferFontSize,
  74    agent::{OpenConfiguration, OpenOnboardingModal, ResetOnboarding},
  75    assistant::{OpenRulesLibrary, ToggleFocus},
  76};
  77use zed_llm_client::{CompletionIntent, UsageLimit};
  78
  79const AGENT_PANEL_KEY: &str = "agent_panel";
  80
  81#[derive(Serialize, Deserialize)]
  82struct SerializedAgentPanel {
  83    width: Option<Pixels>,
  84}
  85
  86pub fn init(cx: &mut App) {
  87    cx.observe_new(
  88        |workspace: &mut Workspace, _window, _cx: &mut Context<Workspace>| {
  89            workspace
  90                .register_action(|workspace, action: &NewThread, window, cx| {
  91                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
  92                        panel.update(cx, |panel, cx| panel.new_thread(action, window, cx));
  93                        workspace.focus_panel::<AgentPanel>(window, cx);
  94                    }
  95                })
  96                .register_action(|workspace, _: &OpenHistory, window, cx| {
  97                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
  98                        workspace.focus_panel::<AgentPanel>(window, cx);
  99                        panel.update(cx, |panel, cx| panel.open_history(window, cx));
 100                    }
 101                })
 102                .register_action(|workspace, _: &OpenConfiguration, window, cx| {
 103                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 104                        workspace.focus_panel::<AgentPanel>(window, cx);
 105                        panel.update(cx, |panel, cx| panel.open_configuration(window, cx));
 106                    }
 107                })
 108                .register_action(|workspace, _: &NewTextThread, window, cx| {
 109                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 110                        workspace.focus_panel::<AgentPanel>(window, cx);
 111                        panel.update(cx, |panel, cx| panel.new_prompt_editor(window, cx));
 112                    }
 113                })
 114                .register_action(|workspace, _: &NewGeminiThread, window, cx| {
 115                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 116                        workspace.focus_panel::<AgentPanel>(window, cx);
 117                        panel.update(cx, |panel, cx| panel.new_gemini_thread(window, cx));
 118                    }
 119                })
 120                .register_action(|workspace, action: &OpenRulesLibrary, window, cx| {
 121                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 122                        workspace.focus_panel::<AgentPanel>(window, cx);
 123                        panel.update(cx, |panel, cx| {
 124                            panel.deploy_rules_library(action, window, cx)
 125                        });
 126                    }
 127                })
 128                .register_action(|workspace, _: &OpenAgentDiff, window, cx| {
 129                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 130                        workspace.focus_panel::<AgentPanel>(window, cx);
 131                        match &panel.read(cx).active_view {
 132                            ActiveView::Thread { thread, .. } => {
 133                                let thread = thread.read(cx).thread().clone();
 134                                AgentDiffPane::deploy_in_workspace(thread, workspace, window, cx);
 135                            }
 136                            ActiveView::Agent2Thread { .. } => todo!(),
 137                            ActiveView::TextThread { .. }
 138                            | ActiveView::History
 139                            | ActiveView::Configuration => {}
 140                        }
 141                    }
 142                })
 143                .register_action(|workspace, _: &Follow, window, cx| {
 144                    workspace.follow(CollaboratorId::Agent, window, cx);
 145                })
 146                .register_action(|workspace, _: &ExpandMessageEditor, window, cx| {
 147                    let Some(panel) = workspace.panel::<AgentPanel>(cx) else {
 148                        return;
 149                    };
 150                    workspace.focus_panel::<AgentPanel>(window, cx);
 151                    panel.update(cx, |panel, cx| {
 152                        if let Some(message_editor) = panel.active_message_editor() {
 153                            message_editor.update(cx, |editor, cx| {
 154                                editor.expand_message_editor(&ExpandMessageEditor, window, cx);
 155                            });
 156                        }
 157                    });
 158                })
 159                .register_action(|workspace, _: &ToggleNavigationMenu, window, cx| {
 160                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 161                        workspace.focus_panel::<AgentPanel>(window, cx);
 162                        panel.update(cx, |panel, cx| {
 163                            panel.toggle_navigation_menu(&ToggleNavigationMenu, window, cx);
 164                        });
 165                    }
 166                })
 167                .register_action(|workspace, _: &ToggleOptionsMenu, window, cx| {
 168                    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
 169                        workspace.focus_panel::<AgentPanel>(window, cx);
 170                        panel.update(cx, |panel, cx| {
 171                            panel.toggle_options_menu(&ToggleOptionsMenu, window, cx);
 172                        });
 173                    }
 174                })
 175                .register_action(|workspace, _: &OpenOnboardingModal, window, cx| {
 176                    AgentOnboardingModal::toggle(workspace, window, cx)
 177                })
 178                .register_action(|_workspace, _: &ResetOnboarding, window, cx| {
 179                    window.dispatch_action(workspace::RestoreBanner.boxed_clone(), cx);
 180                    window.refresh();
 181                })
 182                .register_action(|_workspace, _: &ResetTrialUpsell, _window, cx| {
 183                    Upsell::set_dismissed(false, cx);
 184                })
 185                .register_action(|_workspace, _: &ResetTrialEndUpsell, _window, cx| {
 186                    TrialEndUpsell::set_dismissed(false, cx);
 187                });
 188        },
 189    )
 190    .detach();
 191}
 192
 193enum ActiveView {
 194    Thread {
 195        thread: Entity<ActiveThread>,
 196        change_title_editor: Entity<Editor>,
 197        message_editor: Entity<MessageEditor>,
 198        _subscriptions: Vec<gpui::Subscription>,
 199    },
 200    Agent2Thread {
 201        thread_element: Entity<agent2::ThreadElement>,
 202    },
 203    TextThread {
 204        context_editor: Entity<TextThreadEditor>,
 205        title_editor: Entity<Editor>,
 206        buffer_search_bar: Entity<BufferSearchBar>,
 207        _subscriptions: Vec<gpui::Subscription>,
 208    },
 209    History,
 210    Configuration,
 211}
 212
 213enum WhichFontSize {
 214    AgentFont,
 215    BufferFont,
 216    None,
 217}
 218
 219impl ActiveView {
 220    pub fn which_font_size_used(&self) -> WhichFontSize {
 221        match self {
 222            ActiveView::Thread { .. } | ActiveView::Agent2Thread { .. } | ActiveView::History => {
 223                WhichFontSize::AgentFont
 224            }
 225            ActiveView::TextThread { .. } => WhichFontSize::BufferFont,
 226            ActiveView::Configuration => WhichFontSize::None,
 227        }
 228    }
 229
 230    pub fn thread(
 231        active_thread: Entity<ActiveThread>,
 232        message_editor: Entity<MessageEditor>,
 233        window: &mut Window,
 234        cx: &mut Context<AgentPanel>,
 235    ) -> Self {
 236        let summary = active_thread.read(cx).summary(cx).or_default();
 237
 238        let editor = cx.new(|cx| {
 239            let mut editor = Editor::single_line(window, cx);
 240            editor.set_text(summary.clone(), window, cx);
 241            editor
 242        });
 243
 244        let subscriptions = vec![
 245            cx.subscribe(&message_editor, |this, _, event, cx| match event {
 246                MessageEditorEvent::Changed | MessageEditorEvent::EstimatedTokenCount => {
 247                    cx.notify();
 248                }
 249                MessageEditorEvent::ScrollThreadToBottom => match &this.active_view {
 250                    ActiveView::Thread { thread, .. } => {
 251                        thread.update(cx, |thread, cx| {
 252                            thread.scroll_to_bottom(cx);
 253                        });
 254                    }
 255                    ActiveView::Agent2Thread { .. } => {
 256                        // todo!
 257                    }
 258                    ActiveView::TextThread { .. }
 259                    | ActiveView::History
 260                    | ActiveView::Configuration => {}
 261                },
 262            }),
 263            window.subscribe(&editor, cx, {
 264                {
 265                    let thread = active_thread.clone();
 266                    move |editor, event, window, cx| match event {
 267                        EditorEvent::BufferEdited => {
 268                            let new_summary = editor.read(cx).text(cx);
 269
 270                            thread.update(cx, |thread, cx| {
 271                                thread.thread().update(cx, |thread, cx| {
 272                                    thread.set_summary(new_summary, cx);
 273                                });
 274                            })
 275                        }
 276                        EditorEvent::Blurred => {
 277                            if editor.read(cx).text(cx).is_empty() {
 278                                let summary = thread.read(cx).summary(cx).or_default();
 279
 280                                editor.update(cx, |editor, cx| {
 281                                    editor.set_text(summary, window, cx);
 282                                });
 283                            }
 284                        }
 285                        _ => {}
 286                    }
 287                }
 288            }),
 289            cx.subscribe(&active_thread, |_, _, event, cx| match &event {
 290                ActiveThreadEvent::EditingMessageTokenCountChanged => {
 291                    cx.notify();
 292                }
 293            }),
 294            cx.subscribe_in(&active_thread.read(cx).thread().clone(), window, {
 295                let editor = editor.clone();
 296                move |_, thread, event, window, cx| match event {
 297                    ThreadEvent::SummaryGenerated => {
 298                        let summary = thread.read(cx).summary().or_default();
 299
 300                        editor.update(cx, |editor, cx| {
 301                            editor.set_text(summary, window, cx);
 302                        })
 303                    }
 304                    ThreadEvent::MessageAdded(_) => {
 305                        cx.notify();
 306                    }
 307                    _ => {}
 308                }
 309            }),
 310        ];
 311
 312        Self::Thread {
 313            change_title_editor: editor,
 314            thread: active_thread,
 315            message_editor: message_editor,
 316            _subscriptions: subscriptions,
 317        }
 318    }
 319
 320    pub fn prompt_editor(
 321        context_editor: Entity<TextThreadEditor>,
 322        history_store: Entity<HistoryStore>,
 323        language_registry: Arc<LanguageRegistry>,
 324        window: &mut Window,
 325        cx: &mut App,
 326    ) -> Self {
 327        let title = context_editor.read(cx).title(cx).to_string();
 328
 329        let editor = cx.new(|cx| {
 330            let mut editor = Editor::single_line(window, cx);
 331            editor.set_text(title, window, cx);
 332            editor
 333        });
 334
 335        // This is a workaround for `editor.set_text` emitting a `BufferEdited` event, which would
 336        // cause a custom summary to be set. The presence of this custom summary would cause
 337        // summarization to not happen.
 338        let mut suppress_first_edit = true;
 339
 340        let subscriptions = vec![
 341            window.subscribe(&editor, cx, {
 342                {
 343                    let context_editor = context_editor.clone();
 344                    move |editor, event, window, cx| match event {
 345                        EditorEvent::BufferEdited => {
 346                            if suppress_first_edit {
 347                                suppress_first_edit = false;
 348                                return;
 349                            }
 350                            let new_summary = editor.read(cx).text(cx);
 351
 352                            context_editor.update(cx, |context_editor, cx| {
 353                                context_editor
 354                                    .context()
 355                                    .update(cx, |assistant_context, cx| {
 356                                        assistant_context.set_custom_summary(new_summary, cx);
 357                                    })
 358                            })
 359                        }
 360                        EditorEvent::Blurred => {
 361                            if editor.read(cx).text(cx).is_empty() {
 362                                let summary = context_editor
 363                                    .read(cx)
 364                                    .context()
 365                                    .read(cx)
 366                                    .summary()
 367                                    .or_default();
 368
 369                                editor.update(cx, |editor, cx| {
 370                                    editor.set_text(summary, window, cx);
 371                                });
 372                            }
 373                        }
 374                        _ => {}
 375                    }
 376                }
 377            }),
 378            window.subscribe(&context_editor.read(cx).context().clone(), cx, {
 379                let editor = editor.clone();
 380                move |assistant_context, event, window, cx| match event {
 381                    ContextEvent::SummaryGenerated => {
 382                        let summary = assistant_context.read(cx).summary().or_default();
 383
 384                        editor.update(cx, |editor, cx| {
 385                            editor.set_text(summary, window, cx);
 386                        })
 387                    }
 388                    ContextEvent::PathChanged { old_path, new_path } => {
 389                        history_store.update(cx, |history_store, cx| {
 390                            if let Some(old_path) = old_path {
 391                                history_store
 392                                    .replace_recently_opened_text_thread(old_path, new_path, cx);
 393                            } else {
 394                                history_store.push_recently_opened_entry(
 395                                    HistoryEntryId::Context(new_path.clone()),
 396                                    cx,
 397                                );
 398                            }
 399                        });
 400                    }
 401                    _ => {}
 402                }
 403            }),
 404        ];
 405
 406        let buffer_search_bar =
 407            cx.new(|cx| BufferSearchBar::new(Some(language_registry), window, cx));
 408        buffer_search_bar.update(cx, |buffer_search_bar, cx| {
 409            buffer_search_bar.set_active_pane_item(Some(&context_editor), window, cx)
 410        });
 411
 412        Self::TextThread {
 413            context_editor,
 414            title_editor: editor,
 415            buffer_search_bar,
 416            _subscriptions: subscriptions,
 417        }
 418    }
 419}
 420
 421pub struct AgentPanel {
 422    workspace: WeakEntity<Workspace>,
 423    user_store: Entity<UserStore>,
 424    project: Entity<Project>,
 425    fs: Arc<dyn Fs>,
 426    language_registry: Arc<LanguageRegistry>,
 427    thread_store: Entity<ThreadStore>,
 428    _default_model_subscription: Subscription,
 429    context_store: Entity<TextThreadStore>,
 430    prompt_store: Option<Entity<PromptStore>>,
 431    inline_assist_context_store: Entity<ContextStore>,
 432    configuration: Option<Entity<AgentConfiguration>>,
 433    configuration_subscription: Option<Subscription>,
 434    local_timezone: UtcOffset,
 435    active_view: ActiveView,
 436    previous_view: Option<ActiveView>,
 437    history_store: Entity<HistoryStore>,
 438    history: Entity<ThreadHistory>,
 439    hovered_recent_history_item: Option<usize>,
 440    assistant_dropdown_menu_handle: PopoverMenuHandle<ContextMenu>,
 441    assistant_navigation_menu_handle: PopoverMenuHandle<ContextMenu>,
 442    assistant_navigation_menu: Option<Entity<ContextMenu>>,
 443    width: Option<Pixels>,
 444    height: Option<Pixels>,
 445    zoomed: bool,
 446    pending_serialization: Option<Task<Result<()>>>,
 447    hide_upsell: bool,
 448}
 449
 450impl AgentPanel {
 451    fn serialize(&mut self, cx: &mut Context<Self>) {
 452        let width = self.width;
 453        self.pending_serialization = Some(cx.background_spawn(async move {
 454            KEY_VALUE_STORE
 455                .write_kvp(
 456                    AGENT_PANEL_KEY.into(),
 457                    serde_json::to_string(&SerializedAgentPanel { width })?,
 458                )
 459                .await?;
 460            anyhow::Ok(())
 461        }));
 462    }
 463    pub fn load(
 464        workspace: WeakEntity<Workspace>,
 465        prompt_builder: Arc<PromptBuilder>,
 466        mut cx: AsyncWindowContext,
 467    ) -> Task<Result<Entity<Self>>> {
 468        let prompt_store = cx.update(|_window, cx| PromptStore::global(cx));
 469        cx.spawn(async move |cx| {
 470            let prompt_store = match prompt_store {
 471                Ok(prompt_store) => prompt_store.await.ok(),
 472                Err(_) => None,
 473            };
 474            let tools = cx.new(|_| ToolWorkingSet::default())?;
 475            let thread_store = workspace
 476                .update(cx, |workspace, cx| {
 477                    let project = workspace.project().clone();
 478                    ThreadStore::load(
 479                        project,
 480                        tools.clone(),
 481                        prompt_store.clone(),
 482                        prompt_builder.clone(),
 483                        cx,
 484                    )
 485                })?
 486                .await?;
 487
 488            let slash_commands = Arc::new(SlashCommandWorkingSet::default());
 489            let context_store = workspace
 490                .update(cx, |workspace, cx| {
 491                    let project = workspace.project().clone();
 492                    assistant_context::ContextStore::new(
 493                        project,
 494                        prompt_builder.clone(),
 495                        slash_commands,
 496                        cx,
 497                    )
 498                })?
 499                .await?;
 500
 501            let serialized_panel = if let Some(panel) = cx
 502                .background_spawn(async move { KEY_VALUE_STORE.read_kvp(AGENT_PANEL_KEY) })
 503                .await
 504                .log_err()
 505                .flatten()
 506            {
 507                Some(serde_json::from_str::<SerializedAgentPanel>(&panel)?)
 508            } else {
 509                None
 510            };
 511
 512            let panel = workspace.update_in(cx, |workspace, window, cx| {
 513                let panel = cx.new(|cx| {
 514                    Self::new(
 515                        workspace,
 516                        thread_store,
 517                        context_store,
 518                        prompt_store,
 519                        window,
 520                        cx,
 521                    )
 522                });
 523                if let Some(serialized_panel) = serialized_panel {
 524                    panel.update(cx, |panel, cx| {
 525                        panel.width = serialized_panel.width.map(|w| w.round());
 526                        cx.notify();
 527                    });
 528                }
 529                panel
 530            })?;
 531
 532            Ok(panel)
 533        })
 534    }
 535
 536    fn new(
 537        workspace: &Workspace,
 538        thread_store: Entity<ThreadStore>,
 539        context_store: Entity<TextThreadStore>,
 540        prompt_store: Option<Entity<PromptStore>>,
 541        window: &mut Window,
 542        cx: &mut Context<Self>,
 543    ) -> Self {
 544        let thread = thread_store.update(cx, |this, cx| this.create_thread(cx));
 545        let fs = workspace.app_state().fs.clone();
 546        let user_store = workspace.app_state().user_store.clone();
 547        let project = workspace.project();
 548        let language_registry = project.read(cx).languages().clone();
 549        let workspace = workspace.weak_handle();
 550        let weak_self = cx.entity().downgrade();
 551
 552        let message_editor_context_store =
 553            cx.new(|_cx| ContextStore::new(project.downgrade(), Some(thread_store.downgrade())));
 554        let inline_assist_context_store =
 555            cx.new(|_cx| ContextStore::new(project.downgrade(), Some(thread_store.downgrade())));
 556
 557        let message_editor = cx.new(|cx| {
 558            MessageEditor::new(
 559                fs.clone(),
 560                workspace.clone(),
 561                user_store.clone(),
 562                message_editor_context_store.clone(),
 563                prompt_store.clone(),
 564                thread_store.downgrade(),
 565                context_store.downgrade(),
 566                thread.clone(),
 567                window,
 568                cx,
 569            )
 570        });
 571
 572        let thread_id = thread.read(cx).id().clone();
 573        let history_store = cx.new(|cx| {
 574            HistoryStore::new(
 575                thread_store.clone(),
 576                context_store.clone(),
 577                [HistoryEntryId::Thread(thread_id)],
 578                cx,
 579            )
 580        });
 581
 582        cx.observe(&history_store, |_, _, cx| cx.notify()).detach();
 583
 584        let active_thread = cx.new(|cx| {
 585            ActiveThread::new(
 586                thread.clone(),
 587                thread_store.clone(),
 588                context_store.clone(),
 589                message_editor_context_store.clone(),
 590                language_registry.clone(),
 591                workspace.clone(),
 592                window,
 593                cx,
 594            )
 595        });
 596
 597        let panel_type = AgentSettings::get_global(cx).default_view;
 598        let active_view = match panel_type {
 599            DefaultView::Thread => ActiveView::thread(active_thread, message_editor, window, cx),
 600            DefaultView::TextThread => {
 601                let context =
 602                    context_store.update(cx, |context_store, cx| context_store.create(cx));
 603                let lsp_adapter_delegate = make_lsp_adapter_delegate(&project.clone(), cx).unwrap();
 604                let context_editor = cx.new(|cx| {
 605                    let mut editor = TextThreadEditor::for_context(
 606                        context,
 607                        fs.clone(),
 608                        workspace.clone(),
 609                        project.clone(),
 610                        lsp_adapter_delegate,
 611                        window,
 612                        cx,
 613                    );
 614                    editor.insert_default_prompt(window, cx);
 615                    editor
 616                });
 617                ActiveView::prompt_editor(
 618                    context_editor,
 619                    history_store.clone(),
 620                    language_registry.clone(),
 621                    window,
 622                    cx,
 623                )
 624            }
 625        };
 626
 627        AgentDiff::set_active_thread(&workspace, &thread, window, cx);
 628
 629        let weak_panel = weak_self.clone();
 630
 631        window.defer(cx, move |window, cx| {
 632            let panel = weak_panel.clone();
 633            let assistant_navigation_menu =
 634                ContextMenu::build_persistent(window, cx, move |mut menu, _window, cx| {
 635                    if let Some(panel) = panel.upgrade() {
 636                        menu = Self::populate_recently_opened_menu_section(menu, panel, cx);
 637                    }
 638                    menu.action("View All", Box::new(OpenHistory))
 639                        .end_slot_action(DeleteRecentlyOpenThread.boxed_clone())
 640                        .fixed_width(px(320.).into())
 641                        .keep_open_on_confirm(false)
 642                        .key_context("NavigationMenu")
 643                });
 644            weak_panel
 645                .update(cx, |panel, cx| {
 646                    cx.subscribe_in(
 647                        &assistant_navigation_menu,
 648                        window,
 649                        |_, menu, _: &DismissEvent, window, cx| {
 650                            menu.update(cx, |menu, _| {
 651                                menu.clear_selected();
 652                            });
 653                            cx.focus_self(window);
 654                        },
 655                    )
 656                    .detach();
 657                    panel.assistant_navigation_menu = Some(assistant_navigation_menu);
 658                })
 659                .ok();
 660        });
 661
 662        let _default_model_subscription = cx.subscribe(
 663            &LanguageModelRegistry::global(cx),
 664            |this, _, event: &language_model::Event, cx| match event {
 665                language_model::Event::DefaultModelChanged => match &this.active_view {
 666                    ActiveView::Thread { thread, .. } => {
 667                        thread
 668                            .read(cx)
 669                            .thread()
 670                            .clone()
 671                            .update(cx, |thread, cx| thread.get_or_init_configured_model(cx));
 672                    }
 673                    ActiveView::Agent2Thread { .. } => {
 674                        // todo!
 675                    }
 676                    ActiveView::TextThread { .. }
 677                    | ActiveView::History
 678                    | ActiveView::Configuration => {}
 679                },
 680                _ => {}
 681            },
 682        );
 683
 684        Self {
 685            active_view,
 686            workspace,
 687            user_store,
 688            project: project.clone(),
 689            fs: fs.clone(),
 690            language_registry,
 691            thread_store: thread_store.clone(),
 692            _default_model_subscription,
 693            context_store,
 694            prompt_store,
 695            configuration: None,
 696            configuration_subscription: None,
 697            local_timezone: UtcOffset::from_whole_seconds(
 698                chrono::Local::now().offset().local_minus_utc(),
 699            )
 700            .unwrap(),
 701            inline_assist_context_store,
 702            previous_view: None,
 703            history_store: history_store.clone(),
 704            history: cx.new(|cx| ThreadHistory::new(weak_self, history_store, window, cx)),
 705            hovered_recent_history_item: None,
 706            assistant_dropdown_menu_handle: PopoverMenuHandle::default(),
 707            assistant_navigation_menu_handle: PopoverMenuHandle::default(),
 708            assistant_navigation_menu: None,
 709            width: None,
 710            height: None,
 711            zoomed: false,
 712            pending_serialization: None,
 713            hide_upsell: false,
 714        }
 715    }
 716
 717    pub fn toggle_focus(
 718        workspace: &mut Workspace,
 719        _: &ToggleFocus,
 720        window: &mut Window,
 721        cx: &mut Context<Workspace>,
 722    ) {
 723        if workspace
 724            .panel::<Self>(cx)
 725            .is_some_and(|panel| panel.read(cx).enabled(cx))
 726        {
 727            workspace.toggle_panel_focus::<Self>(window, cx);
 728        }
 729    }
 730
 731    pub(crate) fn local_timezone(&self) -> UtcOffset {
 732        self.local_timezone
 733    }
 734
 735    pub(crate) fn prompt_store(&self) -> &Option<Entity<PromptStore>> {
 736        &self.prompt_store
 737    }
 738
 739    pub(crate) fn inline_assist_context_store(&self) -> &Entity<ContextStore> {
 740        &self.inline_assist_context_store
 741    }
 742
 743    pub(crate) fn thread_store(&self) -> &Entity<ThreadStore> {
 744        &self.thread_store
 745    }
 746
 747    pub(crate) fn text_thread_store(&self) -> &Entity<TextThreadStore> {
 748        &self.context_store
 749    }
 750
 751    fn cancel(&mut self, _: &editor::actions::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 752        match &self.active_view {
 753            ActiveView::Thread { thread, .. } => {
 754                thread.update(cx, |thread, cx| thread.cancel_last_completion(window, cx));
 755            }
 756            ActiveView::Agent2Thread { thread_element, .. } => {
 757                thread_element.update(cx, |thread_element, cx| thread_element.cancel(window, cx));
 758            }
 759            ActiveView::TextThread { .. } | ActiveView::History | ActiveView::Configuration => {}
 760        }
 761    }
 762
 763    fn active_message_editor(&self) -> Option<&Entity<MessageEditor>> {
 764        match &self.active_view {
 765            ActiveView::Thread { message_editor, .. } => Some(message_editor),
 766            ActiveView::Agent2Thread { .. } => {
 767                // todo!
 768                None
 769            }
 770            ActiveView::TextThread { .. } | ActiveView::History | ActiveView::Configuration => None,
 771        }
 772    }
 773
 774    fn new_thread(&mut self, action: &NewThread, window: &mut Window, cx: &mut Context<Self>) {
 775        // Preserve chat box text when using creating new thread from summary'
 776        let preserved_text = if action.from_thread_id.is_some() {
 777            self.active_message_editor()
 778                .map(|editor| editor.read(cx).get_text(cx).trim().to_string())
 779        } else {
 780            None
 781        };
 782
 783        let thread = self
 784            .thread_store
 785            .update(cx, |this, cx| this.create_thread(cx));
 786
 787        let context_store = cx.new(|_cx| {
 788            ContextStore::new(
 789                self.project.downgrade(),
 790                Some(self.thread_store.downgrade()),
 791            )
 792        });
 793
 794        if let Some(other_thread_id) = action.from_thread_id.clone() {
 795            let other_thread_task = self.thread_store.update(cx, |this, cx| {
 796                this.open_thread(&other_thread_id, window, cx)
 797            });
 798
 799            cx.spawn({
 800                let context_store = context_store.clone();
 801
 802                async move |_panel, cx| {
 803                    let other_thread = other_thread_task.await?;
 804
 805                    context_store.update(cx, |this, cx| {
 806                        this.add_thread(other_thread, false, cx);
 807                    })?;
 808                    anyhow::Ok(())
 809                }
 810            })
 811            .detach_and_log_err(cx);
 812        }
 813
 814        let active_thread = cx.new(|cx| {
 815            ActiveThread::new(
 816                thread.clone(),
 817                self.thread_store.clone(),
 818                self.context_store.clone(),
 819                context_store.clone(),
 820                self.language_registry.clone(),
 821                self.workspace.clone(),
 822                window,
 823                cx,
 824            )
 825        });
 826
 827        let message_editor = cx.new(|cx| {
 828            MessageEditor::new(
 829                self.fs.clone(),
 830                self.workspace.clone(),
 831                self.user_store.clone(),
 832                context_store.clone(),
 833                self.prompt_store.clone(),
 834                self.thread_store.downgrade(),
 835                self.context_store.downgrade(),
 836                thread.clone(),
 837                window,
 838                cx,
 839            )
 840        });
 841
 842        if let Some(text) = preserved_text {
 843            message_editor.update(cx, |editor, cx| {
 844                editor.set_text(text, window, cx);
 845            });
 846        }
 847
 848        message_editor.focus_handle(cx).focus(window);
 849
 850        let thread_view = ActiveView::thread(active_thread.clone(), message_editor, window, cx);
 851        self.set_active_view(thread_view, window, cx);
 852
 853        AgentDiff::set_active_thread(&self.workspace, &thread, window, cx);
 854    }
 855
 856    fn new_prompt_editor(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 857        let context = self
 858            .context_store
 859            .update(cx, |context_store, cx| context_store.create(cx));
 860        let lsp_adapter_delegate = make_lsp_adapter_delegate(&self.project, cx)
 861            .log_err()
 862            .flatten();
 863
 864        let context_editor = cx.new(|cx| {
 865            let mut editor = TextThreadEditor::for_context(
 866                context,
 867                self.fs.clone(),
 868                self.workspace.clone(),
 869                self.project.clone(),
 870                lsp_adapter_delegate,
 871                window,
 872                cx,
 873            );
 874            editor.insert_default_prompt(window, cx);
 875            editor
 876        });
 877
 878        self.set_active_view(
 879            ActiveView::prompt_editor(
 880                context_editor.clone(),
 881                self.history_store.clone(),
 882                self.language_registry.clone(),
 883                window,
 884                cx,
 885            ),
 886            window,
 887            cx,
 888        );
 889        context_editor.focus_handle(cx).focus(window);
 890    }
 891
 892    fn new_gemini_thread(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 893        let Some(root_dir) = self
 894            .project
 895            .read(cx)
 896            .visible_worktrees(cx)
 897            .next()
 898            .map(|worktree| worktree.read(cx).abs_path())
 899        else {
 900            // todo! handle no project
 901            return;
 902        };
 903
 904        let cli_path =
 905            Path::new(env!("CARGO_MANIFEST_DIR")).join("../../../gemini-cli/packages/cli");
 906        let child = util::command::new_smol_command("node")
 907            .arg(cli_path)
 908            .arg("--acp")
 909            .args(["--model", "gemini-2.5-flash"])
 910            .current_dir(root_dir)
 911            .stdin(std::process::Stdio::piped())
 912            .stdout(std::process::Stdio::piped())
 913            .stderr(std::process::Stdio::inherit())
 914            .kill_on_drop(true)
 915            .spawn()
 916            .unwrap();
 917
 918        let project = self.project.clone();
 919        cx.spawn_in(window, async move |this, cx| {
 920            let agent = AcpAgent::stdio(child, project, cx);
 921            let thread = agent.create_thread(cx).await?;
 922            let thread_element = cx.new(|_cx| agent2::ThreadElement::new(thread))?;
 923            this.update_in(cx, |this, window, cx| {
 924                this.set_active_view(ActiveView::Agent2Thread { thread_element }, window, cx);
 925            })
 926        })
 927        .detach();
 928    }
 929
 930    fn deploy_rules_library(
 931        &mut self,
 932        action: &OpenRulesLibrary,
 933        _window: &mut Window,
 934        cx: &mut Context<Self>,
 935    ) {
 936        open_rules_library(
 937            self.language_registry.clone(),
 938            Box::new(PromptLibraryInlineAssist::new(self.workspace.clone())),
 939            Rc::new(|| {
 940                Rc::new(SlashCommandCompletionProvider::new(
 941                    Arc::new(SlashCommandWorkingSet::default()),
 942                    None,
 943                    None,
 944                ))
 945            }),
 946            action
 947                .prompt_to_select
 948                .map(|uuid| UserPromptId(uuid).into()),
 949            cx,
 950        )
 951        .detach_and_log_err(cx);
 952    }
 953
 954    fn open_history(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 955        if matches!(self.active_view, ActiveView::History) {
 956            if let Some(previous_view) = self.previous_view.take() {
 957                self.set_active_view(previous_view, window, cx);
 958            }
 959        } else {
 960            self.thread_store
 961                .update(cx, |thread_store, cx| thread_store.reload(cx))
 962                .detach_and_log_err(cx);
 963            self.set_active_view(ActiveView::History, window, cx);
 964        }
 965        cx.notify();
 966    }
 967
 968    pub(crate) fn open_saved_prompt_editor(
 969        &mut self,
 970        path: Arc<Path>,
 971        window: &mut Window,
 972        cx: &mut Context<Self>,
 973    ) -> Task<Result<()>> {
 974        let context = self
 975            .context_store
 976            .update(cx, |store, cx| store.open_local_context(path, cx));
 977        cx.spawn_in(window, async move |this, cx| {
 978            let context = context.await?;
 979            this.update_in(cx, |this, window, cx| {
 980                this.open_prompt_editor(context, window, cx);
 981            })
 982        })
 983    }
 984
 985    pub(crate) fn open_prompt_editor(
 986        &mut self,
 987        context: Entity<AssistantContext>,
 988        window: &mut Window,
 989        cx: &mut Context<Self>,
 990    ) {
 991        let lsp_adapter_delegate = make_lsp_adapter_delegate(&self.project.clone(), cx)
 992            .log_err()
 993            .flatten();
 994        let editor = cx.new(|cx| {
 995            TextThreadEditor::for_context(
 996                context,
 997                self.fs.clone(),
 998                self.workspace.clone(),
 999                self.project.clone(),
1000                lsp_adapter_delegate,
1001                window,
1002                cx,
1003            )
1004        });
1005        self.set_active_view(
1006            ActiveView::prompt_editor(
1007                editor.clone(),
1008                self.history_store.clone(),
1009                self.language_registry.clone(),
1010                window,
1011                cx,
1012            ),
1013            window,
1014            cx,
1015        );
1016    }
1017
1018    pub(crate) fn open_thread_by_id(
1019        &mut self,
1020        thread_id: &ThreadId,
1021        window: &mut Window,
1022        cx: &mut Context<Self>,
1023    ) -> Task<Result<()>> {
1024        let open_thread_task = self
1025            .thread_store
1026            .update(cx, |this, cx| this.open_thread(thread_id, window, cx));
1027        cx.spawn_in(window, async move |this, cx| {
1028            let thread = open_thread_task.await?;
1029            this.update_in(cx, |this, window, cx| {
1030                this.open_thread(thread, window, cx);
1031                anyhow::Ok(())
1032            })??;
1033            Ok(())
1034        })
1035    }
1036
1037    pub(crate) fn open_thread(
1038        &mut self,
1039        thread: Entity<Thread>,
1040        window: &mut Window,
1041        cx: &mut Context<Self>,
1042    ) {
1043        let context_store = cx.new(|_cx| {
1044            ContextStore::new(
1045                self.project.downgrade(),
1046                Some(self.thread_store.downgrade()),
1047            )
1048        });
1049
1050        let active_thread = cx.new(|cx| {
1051            ActiveThread::new(
1052                thread.clone(),
1053                self.thread_store.clone(),
1054                self.context_store.clone(),
1055                context_store.clone(),
1056                self.language_registry.clone(),
1057                self.workspace.clone(),
1058                window,
1059                cx,
1060            )
1061        });
1062
1063        let message_editor = cx.new(|cx| {
1064            MessageEditor::new(
1065                self.fs.clone(),
1066                self.workspace.clone(),
1067                self.user_store.clone(),
1068                context_store,
1069                self.prompt_store.clone(),
1070                self.thread_store.downgrade(),
1071                self.context_store.downgrade(),
1072                thread.clone(),
1073                window,
1074                cx,
1075            )
1076        });
1077        message_editor.focus_handle(cx).focus(window);
1078
1079        let thread_view = ActiveView::thread(active_thread.clone(), message_editor, window, cx);
1080        self.set_active_view(thread_view, window, cx);
1081        AgentDiff::set_active_thread(&self.workspace, &thread, window, cx);
1082    }
1083
1084    pub fn go_back(&mut self, _: &workspace::GoBack, window: &mut Window, cx: &mut Context<Self>) {
1085        match self.active_view {
1086            ActiveView::Configuration | ActiveView::History => {
1087                // todo! check go back works correctly
1088                if let Some(previous_view) = self.previous_view.take() {
1089                    self.active_view = previous_view;
1090
1091                    match &self.active_view {
1092                        ActiveView::Thread { message_editor, .. } => {
1093                            message_editor.focus_handle(cx).focus(window);
1094                        }
1095                        ActiveView::Agent2Thread { .. } => {
1096                            todo!()
1097                        }
1098                        ActiveView::TextThread { context_editor, .. } => {
1099                            context_editor.focus_handle(cx).focus(window);
1100                        }
1101                        ActiveView::History | ActiveView::Configuration => {}
1102                    }
1103                }
1104                cx.notify();
1105            }
1106            _ => {}
1107        }
1108    }
1109
1110    pub fn toggle_navigation_menu(
1111        &mut self,
1112        _: &ToggleNavigationMenu,
1113        window: &mut Window,
1114        cx: &mut Context<Self>,
1115    ) {
1116        self.assistant_navigation_menu_handle.toggle(window, cx);
1117    }
1118
1119    pub fn toggle_options_menu(
1120        &mut self,
1121        _: &ToggleOptionsMenu,
1122        window: &mut Window,
1123        cx: &mut Context<Self>,
1124    ) {
1125        self.assistant_dropdown_menu_handle.toggle(window, cx);
1126    }
1127
1128    pub fn increase_font_size(
1129        &mut self,
1130        action: &IncreaseBufferFontSize,
1131        _: &mut Window,
1132        cx: &mut Context<Self>,
1133    ) {
1134        self.handle_font_size_action(action.persist, px(1.0), cx);
1135    }
1136
1137    pub fn decrease_font_size(
1138        &mut self,
1139        action: &DecreaseBufferFontSize,
1140        _: &mut Window,
1141        cx: &mut Context<Self>,
1142    ) {
1143        self.handle_font_size_action(action.persist, px(-1.0), cx);
1144    }
1145
1146    fn handle_font_size_action(&mut self, persist: bool, delta: Pixels, cx: &mut Context<Self>) {
1147        match self.active_view.which_font_size_used() {
1148            WhichFontSize::AgentFont => {
1149                if persist {
1150                    update_settings_file::<ThemeSettings>(
1151                        self.fs.clone(),
1152                        cx,
1153                        move |settings, cx| {
1154                            let agent_font_size =
1155                                ThemeSettings::get_global(cx).agent_font_size(cx) + delta;
1156                            let _ = settings
1157                                .agent_font_size
1158                                .insert(theme::clamp_font_size(agent_font_size).0);
1159                        },
1160                    );
1161                } else {
1162                    theme::adjust_agent_font_size(cx, |size| {
1163                        *size += delta;
1164                    });
1165                }
1166            }
1167            WhichFontSize::BufferFont => {
1168                // Prompt editor uses the buffer font size, so allow the action to propagate to the
1169                // default handler that changes that font size.
1170                cx.propagate();
1171            }
1172            WhichFontSize::None => {}
1173        }
1174    }
1175
1176    pub fn reset_font_size(
1177        &mut self,
1178        action: &ResetBufferFontSize,
1179        _: &mut Window,
1180        cx: &mut Context<Self>,
1181    ) {
1182        if action.persist {
1183            update_settings_file::<ThemeSettings>(self.fs.clone(), cx, move |settings, _| {
1184                settings.agent_font_size = None;
1185            });
1186        } else {
1187            theme::reset_agent_font_size(cx);
1188        }
1189    }
1190
1191    pub fn toggle_zoom(&mut self, _: &ToggleZoom, window: &mut Window, cx: &mut Context<Self>) {
1192        if self.zoomed {
1193            cx.emit(PanelEvent::ZoomOut);
1194        } else {
1195            if !self.focus_handle(cx).contains_focused(window, cx) {
1196                cx.focus_self(window);
1197            }
1198            cx.emit(PanelEvent::ZoomIn);
1199        }
1200    }
1201
1202    pub fn open_agent_diff(
1203        &mut self,
1204        _: &OpenAgentDiff,
1205        window: &mut Window,
1206        cx: &mut Context<Self>,
1207    ) {
1208        match &self.active_view {
1209            ActiveView::Thread { thread, .. } => {
1210                let thread = thread.read(cx).thread().clone();
1211                self.workspace
1212                    .update(cx, |workspace, cx| {
1213                        AgentDiffPane::deploy_in_workspace(thread, workspace, window, cx)
1214                    })
1215                    .log_err();
1216            }
1217            ActiveView::Agent2Thread { .. } => todo!(),
1218            ActiveView::TextThread { .. } | ActiveView::History | ActiveView::Configuration => {}
1219        }
1220    }
1221
1222    pub(crate) fn open_configuration(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1223        let context_server_store = self.project.read(cx).context_server_store();
1224        let tools = self.thread_store.read(cx).tools();
1225        let fs = self.fs.clone();
1226
1227        self.set_active_view(ActiveView::Configuration, window, cx);
1228        self.configuration = Some(cx.new(|cx| {
1229            AgentConfiguration::new(
1230                fs,
1231                context_server_store,
1232                tools,
1233                self.language_registry.clone(),
1234                self.workspace.clone(),
1235                window,
1236                cx,
1237            )
1238        }));
1239
1240        if let Some(configuration) = self.configuration.as_ref() {
1241            self.configuration_subscription = Some(cx.subscribe_in(
1242                configuration,
1243                window,
1244                Self::handle_agent_configuration_event,
1245            ));
1246
1247            configuration.focus_handle(cx).focus(window);
1248        }
1249    }
1250
1251    pub(crate) fn open_active_thread_as_markdown(
1252        &mut self,
1253        _: &OpenActiveThreadAsMarkdown,
1254        window: &mut Window,
1255        cx: &mut Context<Self>,
1256    ) {
1257        let Some(workspace) = self.workspace.upgrade() else {
1258            return;
1259        };
1260
1261        match &self.active_view {
1262            ActiveView::Thread { thread, .. } => {
1263                active_thread::open_active_thread_as_markdown(
1264                    thread.read(cx).thread().clone(),
1265                    workspace,
1266                    window,
1267                    cx,
1268                )
1269                .detach_and_log_err(cx);
1270            }
1271            ActiveView::Agent2Thread { .. } => {
1272                todo!()
1273            }
1274            ActiveView::TextThread { .. } | ActiveView::History | ActiveView::Configuration => {}
1275        }
1276    }
1277
1278    fn handle_agent_configuration_event(
1279        &mut self,
1280        _entity: &Entity<AgentConfiguration>,
1281        event: &AssistantConfigurationEvent,
1282        window: &mut Window,
1283        cx: &mut Context<Self>,
1284    ) {
1285        match event {
1286            AssistantConfigurationEvent::NewThread(provider) => {
1287                if LanguageModelRegistry::read_global(cx)
1288                    .default_model()
1289                    .map_or(true, |model| model.provider.id() != provider.id())
1290                {
1291                    if let Some(model) = provider.default_model(cx) {
1292                        update_settings_file::<AgentSettings>(
1293                            self.fs.clone(),
1294                            cx,
1295                            move |settings, _| settings.set_model(model),
1296                        );
1297                    }
1298                }
1299
1300                self.new_thread(&NewThread::default(), window, cx);
1301            }
1302        }
1303    }
1304
1305    pub(crate) fn active_thread(&self, cx: &App) -> Option<Entity<Thread>> {
1306        match &self.active_view {
1307            ActiveView::Thread { thread, .. } => Some(thread.read(cx).thread().clone()),
1308            ActiveView::Agent2Thread { .. } => {
1309                // todo!
1310                None
1311            }
1312            _ => None,
1313        }
1314    }
1315
1316    pub(crate) fn delete_thread(
1317        &mut self,
1318        thread_id: &ThreadId,
1319        cx: &mut Context<Self>,
1320    ) -> Task<Result<()>> {
1321        self.thread_store
1322            .update(cx, |this, cx| this.delete_thread(thread_id, cx))
1323    }
1324
1325    fn continue_conversation(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1326        let ActiveView::Thread { thread, .. } = &self.active_view else {
1327            return;
1328        };
1329
1330        let thread_state = thread.read(cx).thread().read(cx);
1331        if !thread_state.tool_use_limit_reached() {
1332            return;
1333        }
1334
1335        let model = thread_state.configured_model().map(|cm| cm.model.clone());
1336        if let Some(model) = model {
1337            thread.update(cx, |active_thread, cx| {
1338                active_thread.thread().update(cx, |thread, cx| {
1339                    thread.insert_invisible_continue_message(cx);
1340                    thread.advance_prompt_id();
1341                    thread.send_to_model(
1342                        model,
1343                        CompletionIntent::UserPrompt,
1344                        Some(window.window_handle()),
1345                        cx,
1346                    );
1347                });
1348            });
1349        } else {
1350            log::warn!("No configured model available for continuation");
1351        }
1352    }
1353
1354    fn toggle_burn_mode(
1355        &mut self,
1356        _: &ToggleBurnMode,
1357        _window: &mut Window,
1358        cx: &mut Context<Self>,
1359    ) {
1360        let ActiveView::Thread { thread, .. } = &self.active_view else {
1361            return;
1362        };
1363
1364        thread.update(cx, |active_thread, cx| {
1365            active_thread.thread().update(cx, |thread, _cx| {
1366                let current_mode = thread.completion_mode();
1367
1368                thread.set_completion_mode(match current_mode {
1369                    CompletionMode::Burn => CompletionMode::Normal,
1370                    CompletionMode::Normal => CompletionMode::Burn,
1371                });
1372            });
1373        });
1374    }
1375
1376    pub(crate) fn active_context_editor(&self) -> Option<Entity<TextThreadEditor>> {
1377        match &self.active_view {
1378            ActiveView::TextThread { context_editor, .. } => Some(context_editor.clone()),
1379            _ => None,
1380        }
1381    }
1382
1383    pub(crate) fn delete_context(
1384        &mut self,
1385        path: Arc<Path>,
1386        cx: &mut Context<Self>,
1387    ) -> Task<Result<()>> {
1388        self.context_store
1389            .update(cx, |this, cx| this.delete_local_context(path, cx))
1390    }
1391
1392    fn set_active_view(
1393        &mut self,
1394        new_view: ActiveView,
1395        window: &mut Window,
1396        cx: &mut Context<Self>,
1397    ) {
1398        let current_is_history = matches!(self.active_view, ActiveView::History);
1399        let new_is_history = matches!(new_view, ActiveView::History);
1400
1401        let current_is_config = matches!(self.active_view, ActiveView::Configuration);
1402        let new_is_config = matches!(new_view, ActiveView::Configuration);
1403
1404        let current_is_special = current_is_history || current_is_config;
1405        let new_is_special = new_is_history || new_is_config;
1406
1407        match &self.active_view {
1408            ActiveView::Thread { thread, .. } => {
1409                let thread = thread.read(cx);
1410                if thread.is_empty() {
1411                    let id = thread.thread().read(cx).id().clone();
1412                    self.history_store.update(cx, |store, cx| {
1413                        store.remove_recently_opened_thread(id, cx);
1414                    });
1415                }
1416            }
1417            ActiveView::Agent2Thread { .. } => {
1418                // todo!
1419            }
1420            _ => {}
1421        }
1422
1423        match &new_view {
1424            ActiveView::Thread { thread, .. } => self.history_store.update(cx, |store, cx| {
1425                let id = thread.read(cx).thread().read(cx).id().clone();
1426                store.push_recently_opened_entry(HistoryEntryId::Thread(id), cx);
1427            }),
1428            ActiveView::TextThread { context_editor, .. } => {
1429                self.history_store.update(cx, |store, cx| {
1430                    if let Some(path) = context_editor.read(cx).context().read(cx).path() {
1431                        store.push_recently_opened_entry(HistoryEntryId::Context(path.clone()), cx)
1432                    }
1433                })
1434            }
1435            ActiveView::Agent2Thread { .. } => {
1436                // todo! push history entry
1437            }
1438            _ => {}
1439        }
1440
1441        if current_is_special && !new_is_special {
1442            self.active_view = new_view;
1443        } else if !current_is_special && new_is_special {
1444            self.previous_view = Some(std::mem::replace(&mut self.active_view, new_view));
1445        } else {
1446            if !new_is_special {
1447                self.previous_view = None;
1448            }
1449            self.active_view = new_view;
1450        }
1451
1452        self.focus_handle(cx).focus(window);
1453    }
1454
1455    fn populate_recently_opened_menu_section(
1456        mut menu: ContextMenu,
1457        panel: Entity<Self>,
1458        cx: &mut Context<ContextMenu>,
1459    ) -> ContextMenu {
1460        let entries = panel
1461            .read(cx)
1462            .history_store
1463            .read(cx)
1464            .recently_opened_entries(cx);
1465
1466        if entries.is_empty() {
1467            return menu;
1468        }
1469
1470        menu = menu.header("Recently Opened");
1471
1472        for entry in entries {
1473            let title = entry.title().clone();
1474            let id = entry.id();
1475
1476            menu = menu.entry_with_end_slot_on_hover(
1477                title,
1478                None,
1479                {
1480                    let panel = panel.downgrade();
1481                    let id = id.clone();
1482                    move |window, cx| {
1483                        let id = id.clone();
1484                        panel
1485                            .update(cx, move |this, cx| match id {
1486                                HistoryEntryId::Thread(id) => this
1487                                    .open_thread_by_id(&id, window, cx)
1488                                    .detach_and_log_err(cx),
1489                                HistoryEntryId::Context(path) => this
1490                                    .open_saved_prompt_editor(path.clone(), window, cx)
1491                                    .detach_and_log_err(cx),
1492                            })
1493                            .ok();
1494                    }
1495                },
1496                IconName::Close,
1497                "Close Entry".into(),
1498                {
1499                    let panel = panel.downgrade();
1500                    let id = id.clone();
1501                    move |_window, cx| {
1502                        panel
1503                            .update(cx, |this, cx| {
1504                                this.history_store.update(cx, |history_store, cx| {
1505                                    history_store.remove_recently_opened_entry(&id, cx);
1506                                });
1507                            })
1508                            .ok();
1509                    }
1510                },
1511            );
1512        }
1513
1514        menu = menu.separator();
1515
1516        menu
1517    }
1518}
1519
1520impl Focusable for AgentPanel {
1521    fn focus_handle(&self, cx: &App) -> FocusHandle {
1522        match &self.active_view {
1523            ActiveView::Thread { message_editor, .. } => message_editor.focus_handle(cx),
1524            ActiveView::Agent2Thread { .. } => {
1525                // todo! add own message editor to agent2
1526                cx.focus_handle()
1527            }
1528            ActiveView::History => self.history.focus_handle(cx),
1529            ActiveView::TextThread { context_editor, .. } => context_editor.focus_handle(cx),
1530            ActiveView::Configuration => {
1531                if let Some(configuration) = self.configuration.as_ref() {
1532                    configuration.focus_handle(cx)
1533                } else {
1534                    cx.focus_handle()
1535                }
1536            }
1537        }
1538    }
1539}
1540
1541fn agent_panel_dock_position(cx: &App) -> DockPosition {
1542    match AgentSettings::get_global(cx).dock {
1543        AgentDockPosition::Left => DockPosition::Left,
1544        AgentDockPosition::Bottom => DockPosition::Bottom,
1545        AgentDockPosition::Right => DockPosition::Right,
1546    }
1547}
1548
1549impl EventEmitter<PanelEvent> for AgentPanel {}
1550
1551impl Panel for AgentPanel {
1552    fn persistent_name() -> &'static str {
1553        "AgentPanel"
1554    }
1555
1556    fn position(&self, _window: &Window, cx: &App) -> DockPosition {
1557        agent_panel_dock_position(cx)
1558    }
1559
1560    fn position_is_valid(&self, position: DockPosition) -> bool {
1561        position != DockPosition::Bottom
1562    }
1563
1564    fn set_position(&mut self, position: DockPosition, _: &mut Window, cx: &mut Context<Self>) {
1565        settings::update_settings_file::<AgentSettings>(self.fs.clone(), cx, move |settings, _| {
1566            let dock = match position {
1567                DockPosition::Left => AgentDockPosition::Left,
1568                DockPosition::Bottom => AgentDockPosition::Bottom,
1569                DockPosition::Right => AgentDockPosition::Right,
1570            };
1571            settings.set_dock(dock);
1572        });
1573    }
1574
1575    fn size(&self, window: &Window, cx: &App) -> Pixels {
1576        let settings = AgentSettings::get_global(cx);
1577        match self.position(window, cx) {
1578            DockPosition::Left | DockPosition::Right => {
1579                self.width.unwrap_or(settings.default_width)
1580            }
1581            DockPosition::Bottom => self.height.unwrap_or(settings.default_height),
1582        }
1583    }
1584
1585    fn set_size(&mut self, size: Option<Pixels>, window: &mut Window, cx: &mut Context<Self>) {
1586        match self.position(window, cx) {
1587            DockPosition::Left | DockPosition::Right => self.width = size,
1588            DockPosition::Bottom => self.height = size,
1589        }
1590        self.serialize(cx);
1591        cx.notify();
1592    }
1593
1594    fn set_active(&mut self, _active: bool, _window: &mut Window, _cx: &mut Context<Self>) {}
1595
1596    fn remote_id() -> Option<proto::PanelId> {
1597        Some(proto::PanelId::AssistantPanel)
1598    }
1599
1600    fn icon(&self, _window: &Window, cx: &App) -> Option<IconName> {
1601        (self.enabled(cx) && AgentSettings::get_global(cx).button).then_some(IconName::ZedAssistant)
1602    }
1603
1604    fn icon_tooltip(&self, _window: &Window, _cx: &App) -> Option<&'static str> {
1605        Some("Agent Panel")
1606    }
1607
1608    fn toggle_action(&self) -> Box<dyn Action> {
1609        Box::new(ToggleFocus)
1610    }
1611
1612    fn activation_priority(&self) -> u32 {
1613        3
1614    }
1615
1616    fn enabled(&self, cx: &App) -> bool {
1617        AgentSettings::get_global(cx).enabled
1618    }
1619
1620    fn is_zoomed(&self, _window: &Window, _cx: &App) -> bool {
1621        self.zoomed
1622    }
1623
1624    fn set_zoomed(&mut self, zoomed: bool, _window: &mut Window, cx: &mut Context<Self>) {
1625        self.zoomed = zoomed;
1626        cx.notify();
1627    }
1628}
1629
1630impl AgentPanel {
1631    fn render_title_view(&self, _window: &mut Window, cx: &Context<Self>) -> AnyElement {
1632        const LOADING_SUMMARY_PLACEHOLDER: &str = "Loading Summary…";
1633
1634        let content = match &self.active_view {
1635            ActiveView::Thread {
1636                thread: active_thread,
1637                change_title_editor,
1638                ..
1639            } => {
1640                let state = {
1641                    let active_thread = active_thread.read(cx);
1642                    if active_thread.is_empty() {
1643                        &ThreadSummary::Pending
1644                    } else {
1645                        active_thread.summary(cx)
1646                    }
1647                };
1648
1649                match state {
1650                    ThreadSummary::Pending => Label::new(ThreadSummary::DEFAULT.clone())
1651                        .truncate()
1652                        .into_any_element(),
1653                    ThreadSummary::Generating => Label::new(LOADING_SUMMARY_PLACEHOLDER)
1654                        .truncate()
1655                        .into_any_element(),
1656                    ThreadSummary::Ready(_) => div()
1657                        .w_full()
1658                        .child(change_title_editor.clone())
1659                        .into_any_element(),
1660                    ThreadSummary::Error => h_flex()
1661                        .w_full()
1662                        .child(change_title_editor.clone())
1663                        .child(
1664                            ui::IconButton::new("retry-summary-generation", IconName::RotateCcw)
1665                                .on_click({
1666                                    let active_thread = active_thread.clone();
1667                                    move |_, _window, cx| {
1668                                        active_thread.update(cx, |thread, cx| {
1669                                            thread.regenerate_summary(cx);
1670                                        });
1671                                    }
1672                                })
1673                                .tooltip(move |_window, cx| {
1674                                    cx.new(|_| {
1675                                        Tooltip::new("Failed to generate title")
1676                                            .meta("Click to try again")
1677                                    })
1678                                    .into()
1679                                }),
1680                        )
1681                        .into_any_element(),
1682                }
1683            }
1684            ActiveView::Agent2Thread { thread_element } => {
1685                Label::new(thread_element.read(cx).title(cx))
1686                    .truncate()
1687                    .into_any_element()
1688            }
1689            ActiveView::TextThread {
1690                title_editor,
1691                context_editor,
1692                ..
1693            } => {
1694                let summary = context_editor.read(cx).context().read(cx).summary();
1695
1696                match summary {
1697                    ContextSummary::Pending => Label::new(ContextSummary::DEFAULT)
1698                        .truncate()
1699                        .into_any_element(),
1700                    ContextSummary::Content(summary) => {
1701                        if summary.done {
1702                            div()
1703                                .w_full()
1704                                .child(title_editor.clone())
1705                                .into_any_element()
1706                        } else {
1707                            Label::new(LOADING_SUMMARY_PLACEHOLDER)
1708                                .truncate()
1709                                .into_any_element()
1710                        }
1711                    }
1712                    ContextSummary::Error => h_flex()
1713                        .w_full()
1714                        .child(title_editor.clone())
1715                        .child(
1716                            ui::IconButton::new("retry-summary-generation", IconName::RotateCcw)
1717                                .on_click({
1718                                    let context_editor = context_editor.clone();
1719                                    move |_, _window, cx| {
1720                                        context_editor.update(cx, |context_editor, cx| {
1721                                            context_editor.regenerate_summary(cx);
1722                                        });
1723                                    }
1724                                })
1725                                .tooltip(move |_window, cx| {
1726                                    cx.new(|_| {
1727                                        Tooltip::new("Failed to generate title")
1728                                            .meta("Click to try again")
1729                                    })
1730                                    .into()
1731                                }),
1732                        )
1733                        .into_any_element(),
1734                }
1735            }
1736            ActiveView::History => Label::new("History").truncate().into_any_element(),
1737            ActiveView::Configuration => Label::new("Settings").truncate().into_any_element(),
1738        };
1739
1740        h_flex()
1741            .key_context("TitleEditor")
1742            .id("TitleEditor")
1743            .flex_grow()
1744            .w_full()
1745            .max_w_full()
1746            .overflow_x_scroll()
1747            .child(content)
1748            .into_any()
1749    }
1750
1751    fn render_toolbar(&self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1752        let user_store = self.user_store.read(cx);
1753        let usage = user_store.model_request_usage();
1754
1755        let account_url = zed_urls::account_url(cx);
1756
1757        let focus_handle = self.focus_handle(cx);
1758
1759        let go_back_button = div().child(
1760            IconButton::new("go-back", IconName::ArrowLeft)
1761                .icon_size(IconSize::Small)
1762                .on_click(cx.listener(|this, _, window, cx| {
1763                    this.go_back(&workspace::GoBack, window, cx);
1764                }))
1765                .tooltip({
1766                    let focus_handle = focus_handle.clone();
1767                    move |window, cx| {
1768                        Tooltip::for_action_in(
1769                            "Go Back",
1770                            &workspace::GoBack,
1771                            &focus_handle,
1772                            window,
1773                            cx,
1774                        )
1775                    }
1776                }),
1777        );
1778
1779        let recent_entries_menu = div().child(
1780            PopoverMenu::new("agent-nav-menu")
1781                .trigger_with_tooltip(
1782                    IconButton::new("agent-nav-menu", IconName::MenuAlt)
1783                        .icon_size(IconSize::Small)
1784                        .style(ui::ButtonStyle::Subtle),
1785                    {
1786                        let focus_handle = focus_handle.clone();
1787                        move |window, cx| {
1788                            Tooltip::for_action_in(
1789                                "Toggle Panel Menu",
1790                                &ToggleNavigationMenu,
1791                                &focus_handle,
1792                                window,
1793                                cx,
1794                            )
1795                        }
1796                    },
1797                )
1798                .anchor(Corner::TopLeft)
1799                .with_handle(self.assistant_navigation_menu_handle.clone())
1800                .menu({
1801                    let menu = self.assistant_navigation_menu.clone();
1802                    move |window, cx| {
1803                        if let Some(menu) = menu.as_ref() {
1804                            menu.update(cx, |_, cx| {
1805                                cx.defer_in(window, |menu, window, cx| {
1806                                    menu.rebuild(window, cx);
1807                                });
1808                            })
1809                        }
1810                        menu.clone()
1811                    }
1812                }),
1813        );
1814
1815        let zoom_in_label = if self.is_zoomed(window, cx) {
1816            "Zoom Out"
1817        } else {
1818            "Zoom In"
1819        };
1820
1821        let active_thread = match &self.active_view {
1822            ActiveView::Thread { thread, .. } => Some(thread.read(cx).thread().clone()),
1823            ActiveView::Agent2Thread { .. } => {
1824                // todo!
1825                None
1826            }
1827            ActiveView::TextThread { .. } | ActiveView::History | ActiveView::Configuration => None,
1828        };
1829
1830        let agent_extra_menu = PopoverMenu::new("agent-options-menu")
1831            .trigger_with_tooltip(
1832                IconButton::new("agent-options-menu", IconName::Ellipsis)
1833                    .icon_size(IconSize::Small),
1834                {
1835                    let focus_handle = focus_handle.clone();
1836                    move |window, cx| {
1837                        Tooltip::for_action_in(
1838                            "Toggle Agent Menu",
1839                            &ToggleOptionsMenu,
1840                            &focus_handle,
1841                            window,
1842                            cx,
1843                        )
1844                    }
1845                },
1846            )
1847            .anchor(Corner::TopRight)
1848            .with_handle(self.assistant_dropdown_menu_handle.clone())
1849            .menu(move |window, cx| {
1850                let active_thread = active_thread.clone();
1851                Some(ContextMenu::build(window, cx, |mut menu, _window, cx| {
1852                    menu = menu
1853                        .action("New Thread", NewThread::default().boxed_clone())
1854                        .action("New Text Thread", NewTextThread.boxed_clone())
1855                        .action("New Gemini Thread", NewGeminiThread.boxed_clone())
1856                        .when_some(active_thread, |this, active_thread| {
1857                            let thread = active_thread.read(cx);
1858                            if !thread.is_empty() {
1859                                this.action(
1860                                    "New From Summary",
1861                                    Box::new(NewThread {
1862                                        from_thread_id: Some(thread.id().clone()),
1863                                    }),
1864                                )
1865                            } else {
1866                                this
1867                            }
1868                        })
1869                        .separator();
1870
1871                    menu = menu
1872                        .header("MCP Servers")
1873                        .action(
1874                            "View Server Extensions",
1875                            Box::new(zed_actions::Extensions {
1876                                category_filter: Some(
1877                                    zed_actions::ExtensionCategoryFilter::ContextServers,
1878                                ),
1879                            }),
1880                        )
1881                        .action("Add Custom Server…", Box::new(AddContextServer))
1882                        .separator();
1883
1884                    if let Some(usage) = usage {
1885                        menu = menu
1886                            .header_with_link("Prompt Usage", "Manage", account_url.clone())
1887                            .custom_entry(
1888                                move |_window, cx| {
1889                                    let used_percentage = match usage.limit {
1890                                        UsageLimit::Limited(limit) => {
1891                                            Some((usage.amount as f32 / limit as f32) * 100.)
1892                                        }
1893                                        UsageLimit::Unlimited => None,
1894                                    };
1895
1896                                    h_flex()
1897                                        .flex_1()
1898                                        .gap_1p5()
1899                                        .children(used_percentage.map(|percent| {
1900                                            ProgressBar::new("usage", percent, 100., cx)
1901                                        }))
1902                                        .child(
1903                                            Label::new(match usage.limit {
1904                                                UsageLimit::Limited(limit) => {
1905                                                    format!("{} / {limit}", usage.amount)
1906                                                }
1907                                                UsageLimit::Unlimited => {
1908                                                    format!("{} / ∞", usage.amount)
1909                                                }
1910                                            })
1911                                            .size(LabelSize::Small)
1912                                            .color(Color::Muted),
1913                                        )
1914                                        .into_any_element()
1915                                },
1916                                move |_, cx| cx.open_url(&zed_urls::account_url(cx)),
1917                            )
1918                            .separator()
1919                    }
1920
1921                    menu = menu
1922                        .action("Rules…", Box::new(OpenRulesLibrary::default()))
1923                        .action("Settings", Box::new(OpenConfiguration))
1924                        .action(zoom_in_label, Box::new(ToggleZoom));
1925                    menu
1926                }))
1927            });
1928
1929        h_flex()
1930            .id("assistant-toolbar")
1931            .h(Tab::container_height(cx))
1932            .max_w_full()
1933            .flex_none()
1934            .justify_between()
1935            .gap_2()
1936            .bg(cx.theme().colors().tab_bar_background)
1937            .border_b_1()
1938            .border_color(cx.theme().colors().border)
1939            .child(
1940                h_flex()
1941                    .size_full()
1942                    .pl_1()
1943                    .gap_1()
1944                    .child(match &self.active_view {
1945                        ActiveView::History | ActiveView::Configuration => go_back_button,
1946                        _ => recent_entries_menu,
1947                    })
1948                    .child(self.render_title_view(window, cx)),
1949            )
1950            .child(
1951                h_flex()
1952                    .h_full()
1953                    .gap_2()
1954                    .children(self.render_token_count(cx))
1955                    .child(
1956                        h_flex()
1957                            .h_full()
1958                            .gap(DynamicSpacing::Base02.rems(cx))
1959                            .px(DynamicSpacing::Base08.rems(cx))
1960                            .border_l_1()
1961                            .border_color(cx.theme().colors().border)
1962                            .child(
1963                                IconButton::new("new", IconName::Plus)
1964                                    .icon_size(IconSize::Small)
1965                                    .style(ButtonStyle::Subtle)
1966                                    .tooltip(move |window, cx| {
1967                                        Tooltip::for_action_in(
1968                                            "New Thread",
1969                                            &NewThread::default(),
1970                                            &focus_handle,
1971                                            window,
1972                                            cx,
1973                                        )
1974                                    })
1975                                    .on_click(move |_event, window, cx| {
1976                                        window.dispatch_action(
1977                                            NewThread::default().boxed_clone(),
1978                                            cx,
1979                                        );
1980                                    }),
1981                            )
1982                            .child(agent_extra_menu),
1983                    ),
1984            )
1985    }
1986
1987    fn render_token_count(&self, cx: &App) -> Option<AnyElement> {
1988        let (active_thread, message_editor) = match &self.active_view {
1989            ActiveView::Thread {
1990                thread,
1991                message_editor,
1992                ..
1993            } => (thread.read(cx), message_editor.read(cx)),
1994            ActiveView::Agent2Thread { .. } => {
1995                // todo!
1996                return None;
1997            }
1998            ActiveView::TextThread { .. } | ActiveView::History | ActiveView::Configuration => {
1999                return None;
2000            }
2001        };
2002
2003        let editor_empty = message_editor.is_editor_fully_empty(cx);
2004
2005        if active_thread.is_empty() && editor_empty {
2006            return None;
2007        }
2008
2009        let thread = active_thread.thread().read(cx);
2010        let is_generating = thread.is_generating();
2011        let conversation_token_usage = thread.total_token_usage()?;
2012
2013        let (total_token_usage, is_estimating) =
2014            if let Some((editing_message_id, unsent_tokens)) = active_thread.editing_message_id() {
2015                let combined = thread
2016                    .token_usage_up_to_message(editing_message_id)
2017                    .add(unsent_tokens);
2018
2019                (combined, unsent_tokens > 0)
2020            } else {
2021                let unsent_tokens = message_editor.last_estimated_token_count().unwrap_or(0);
2022                let combined = conversation_token_usage.add(unsent_tokens);
2023
2024                (combined, unsent_tokens > 0)
2025            };
2026
2027        let is_waiting_to_update_token_count = message_editor.is_waiting_to_update_token_count();
2028
2029        match &self.active_view {
2030            ActiveView::Thread { .. } => {
2031                if total_token_usage.total == 0 {
2032                    return None;
2033                }
2034
2035                let token_color = match total_token_usage.ratio() {
2036                    TokenUsageRatio::Normal if is_estimating => Color::Default,
2037                    TokenUsageRatio::Normal => Color::Muted,
2038                    TokenUsageRatio::Warning => Color::Warning,
2039                    TokenUsageRatio::Exceeded => Color::Error,
2040                };
2041
2042                let token_count = h_flex()
2043                    .id("token-count")
2044                    .flex_shrink_0()
2045                    .gap_0p5()
2046                    .when(!is_generating && is_estimating, |parent| {
2047                        parent
2048                            .child(
2049                                h_flex()
2050                                    .mr_1()
2051                                    .size_2p5()
2052                                    .justify_center()
2053                                    .rounded_full()
2054                                    .bg(cx.theme().colors().text.opacity(0.1))
2055                                    .child(
2056                                        div().size_1().rounded_full().bg(cx.theme().colors().text),
2057                                    ),
2058                            )
2059                            .tooltip(move |window, cx| {
2060                                Tooltip::with_meta(
2061                                    "Estimated New Token Count",
2062                                    None,
2063                                    format!(
2064                                        "Current Conversation Tokens: {}",
2065                                        humanize_token_count(conversation_token_usage.total)
2066                                    ),
2067                                    window,
2068                                    cx,
2069                                )
2070                            })
2071                    })
2072                    .child(
2073                        Label::new(humanize_token_count(total_token_usage.total))
2074                            .size(LabelSize::Small)
2075                            .color(token_color)
2076                            .map(|label| {
2077                                if is_generating || is_waiting_to_update_token_count {
2078                                    label
2079                                        .with_animation(
2080                                            "used-tokens-label",
2081                                            Animation::new(Duration::from_secs(2))
2082                                                .repeat()
2083                                                .with_easing(pulsating_between(0.6, 1.)),
2084                                            |label, delta| label.alpha(delta),
2085                                        )
2086                                        .into_any()
2087                                } else {
2088                                    label.into_any_element()
2089                                }
2090                            }),
2091                    )
2092                    .child(Label::new("/").size(LabelSize::Small).color(Color::Muted))
2093                    .child(
2094                        Label::new(humanize_token_count(total_token_usage.max))
2095                            .size(LabelSize::Small)
2096                            .color(Color::Muted),
2097                    )
2098                    .into_any();
2099
2100                Some(token_count)
2101            }
2102            ActiveView::TextThread { context_editor, .. } => {
2103                let element = render_remaining_tokens(context_editor, cx)?;
2104
2105                Some(element.into_any_element())
2106            }
2107            _ => None,
2108        }
2109    }
2110
2111    fn should_render_trial_end_upsell(&self, cx: &mut Context<Self>) -> bool {
2112        if TrialEndUpsell::dismissed() {
2113            return false;
2114        }
2115
2116        let plan = self.user_store.read(cx).current_plan();
2117        let has_previous_trial = self.user_store.read(cx).trial_started_at().is_some();
2118
2119        matches!(plan, Some(Plan::Free)) && has_previous_trial
2120    }
2121
2122    fn should_render_upsell(&self, cx: &mut Context<Self>) -> bool {
2123        match &self.active_view {
2124            ActiveView::Thread { thread, .. } => {
2125                let is_using_zed_provider = thread
2126                    .read(cx)
2127                    .thread()
2128                    .read(cx)
2129                    .configured_model()
2130                    .map_or(false, |model| {
2131                        model.provider.id().0 == ZED_CLOUD_PROVIDER_ID
2132                    });
2133
2134                if !is_using_zed_provider {
2135                    return false;
2136                }
2137            }
2138            ActiveView::Agent2Thread { .. } => {
2139                // todo!
2140                return false;
2141            }
2142            ActiveView::TextThread { .. } | ActiveView::History | ActiveView::Configuration => {
2143                return false;
2144            }
2145        };
2146
2147        if self.hide_upsell || Upsell::dismissed() {
2148            return false;
2149        }
2150
2151        let plan = self.user_store.read(cx).current_plan();
2152        if matches!(plan, Some(Plan::ZedPro | Plan::ZedProTrial)) {
2153            return false;
2154        }
2155
2156        let has_previous_trial = self.user_store.read(cx).trial_started_at().is_some();
2157        if has_previous_trial {
2158            return false;
2159        }
2160
2161        true
2162    }
2163
2164    fn render_upsell(
2165        &self,
2166        _window: &mut Window,
2167        cx: &mut Context<Self>,
2168    ) -> Option<impl IntoElement> {
2169        if !self.should_render_upsell(cx) {
2170            return None;
2171        }
2172
2173        if self.user_store.read(cx).account_too_young() {
2174            Some(self.render_young_account_upsell(cx).into_any_element())
2175        } else {
2176            Some(self.render_trial_upsell(cx).into_any_element())
2177        }
2178    }
2179
2180    fn render_young_account_upsell(&self, cx: &mut Context<Self>) -> impl IntoElement {
2181        let checkbox = CheckboxWithLabel::new(
2182            "dont-show-again",
2183            Label::new("Don't show again").color(Color::Muted),
2184            ToggleState::Unselected,
2185            move |toggle_state, _window, cx| {
2186                let toggle_state_bool = toggle_state.selected();
2187
2188                Upsell::set_dismissed(toggle_state_bool, cx);
2189            },
2190        );
2191
2192        let contents = div()
2193            .size_full()
2194            .gap_2()
2195            .flex()
2196            .flex_col()
2197            .child(Headline::new("Build better with Zed Pro").size(HeadlineSize::Small))
2198            .child(
2199                Label::new("Your GitHub account was created less than 30 days ago, so we can't offer you a free trial.")
2200                    .size(LabelSize::Small),
2201            )
2202            .child(
2203                Label::new(
2204                    "Use your own API keys, upgrade to Zed Pro or send an email to billing-support@zed.dev.",
2205                )
2206                .color(Color::Muted),
2207            )
2208            .child(
2209                h_flex()
2210                    .w_full()
2211                    .px_neg_1()
2212                    .justify_between()
2213                    .items_center()
2214                    .child(h_flex().items_center().gap_1().child(checkbox))
2215                    .child(
2216                        h_flex()
2217                            .gap_2()
2218                            .child(
2219                                Button::new("dismiss-button", "Not Now")
2220                                    .style(ButtonStyle::Transparent)
2221                                    .color(Color::Muted)
2222                                    .on_click({
2223                                        let agent_panel = cx.entity();
2224                                        move |_, _, cx| {
2225                                            agent_panel.update(cx, |this, cx| {
2226                                                this.hide_upsell = true;
2227                                                cx.notify();
2228                                            });
2229                                        }
2230                                    }),
2231                            )
2232                            .child(
2233                                Button::new("cta-button", "Upgrade to Zed Pro")
2234                                    .style(ButtonStyle::Transparent)
2235                                    .on_click(|_, _, cx| cx.open_url(&zed_urls::account_url(cx))),
2236                            ),
2237                    ),
2238            );
2239
2240        self.render_upsell_container(cx, contents)
2241    }
2242
2243    fn render_trial_upsell(&self, cx: &mut Context<Self>) -> impl IntoElement {
2244        let checkbox = CheckboxWithLabel::new(
2245            "dont-show-again",
2246            Label::new("Don't show again").color(Color::Muted),
2247            ToggleState::Unselected,
2248            move |toggle_state, _window, cx| {
2249                let toggle_state_bool = toggle_state.selected();
2250
2251                Upsell::set_dismissed(toggle_state_bool, cx);
2252            },
2253        );
2254
2255        let contents = div()
2256            .size_full()
2257            .gap_2()
2258            .flex()
2259            .flex_col()
2260            .child(Headline::new("Build better with Zed Pro").size(HeadlineSize::Small))
2261            .child(
2262                Label::new("Try Zed Pro for free for 14 days - no credit card required.")
2263                    .size(LabelSize::Small),
2264            )
2265            .child(
2266                Label::new(
2267                    "Use your own API keys or enable usage-based billing once you hit the cap.",
2268                )
2269                .color(Color::Muted),
2270            )
2271            .child(
2272                h_flex()
2273                    .w_full()
2274                    .px_neg_1()
2275                    .justify_between()
2276                    .items_center()
2277                    .child(h_flex().items_center().gap_1().child(checkbox))
2278                    .child(
2279                        h_flex()
2280                            .gap_2()
2281                            .child(
2282                                Button::new("dismiss-button", "Not Now")
2283                                    .style(ButtonStyle::Transparent)
2284                                    .color(Color::Muted)
2285                                    .on_click({
2286                                        let agent_panel = cx.entity();
2287                                        move |_, _, cx| {
2288                                            agent_panel.update(cx, |this, cx| {
2289                                                this.hide_upsell = true;
2290                                                cx.notify();
2291                                            });
2292                                        }
2293                                    }),
2294                            )
2295                            .child(
2296                                Button::new("cta-button", "Start Trial")
2297                                    .style(ButtonStyle::Transparent)
2298                                    .on_click(|_, _, cx| cx.open_url(&zed_urls::account_url(cx))),
2299                            ),
2300                    ),
2301            );
2302
2303        self.render_upsell_container(cx, contents)
2304    }
2305
2306    fn render_trial_end_upsell(
2307        &self,
2308        _window: &mut Window,
2309        cx: &mut Context<Self>,
2310    ) -> Option<impl IntoElement> {
2311        if !self.should_render_trial_end_upsell(cx) {
2312            return None;
2313        }
2314
2315        Some(
2316            self.render_upsell_container(
2317                cx,
2318                div()
2319                    .size_full()
2320                    .gap_2()
2321                    .flex()
2322                    .flex_col()
2323                    .child(
2324                        Headline::new("Your Zed Pro trial has expired.").size(HeadlineSize::Small),
2325                    )
2326                    .child(
2327                        Label::new("You've been automatically reset to the free plan.")
2328                            .size(LabelSize::Small),
2329                    )
2330                    .child(
2331                        h_flex()
2332                            .w_full()
2333                            .px_neg_1()
2334                            .justify_between()
2335                            .items_center()
2336                            .child(div())
2337                            .child(
2338                                h_flex()
2339                                    .gap_2()
2340                                    .child(
2341                                        Button::new("dismiss-button", "Stay on Free")
2342                                            .style(ButtonStyle::Transparent)
2343                                            .color(Color::Muted)
2344                                            .on_click({
2345                                                let agent_panel = cx.entity();
2346                                                move |_, _, cx| {
2347                                                    agent_panel.update(cx, |_this, cx| {
2348                                                        TrialEndUpsell::set_dismissed(true, cx);
2349                                                        cx.notify();
2350                                                    });
2351                                                }
2352                                            }),
2353                                    )
2354                                    .child(
2355                                        Button::new("cta-button", "Upgrade to Zed Pro")
2356                                            .style(ButtonStyle::Transparent)
2357                                            .on_click(|_, _, cx| {
2358                                                cx.open_url(&zed_urls::account_url(cx))
2359                                            }),
2360                                    ),
2361                            ),
2362                    ),
2363            ),
2364        )
2365    }
2366
2367    fn render_upsell_container(&self, cx: &mut Context<Self>, content: Div) -> Div {
2368        div().p_2().child(
2369            v_flex()
2370                .w_full()
2371                .elevation_2(cx)
2372                .rounded(px(8.))
2373                .bg(cx.theme().colors().background.alpha(0.5))
2374                .p(px(3.))
2375                .child(
2376                    div()
2377                        .gap_2()
2378                        .flex()
2379                        .flex_col()
2380                        .size_full()
2381                        .border_1()
2382                        .rounded(px(5.))
2383                        .border_color(cx.theme().colors().text.alpha(0.1))
2384                        .overflow_hidden()
2385                        .relative()
2386                        .bg(cx.theme().colors().panel_background)
2387                        .px_4()
2388                        .py_3()
2389                        .child(
2390                            div()
2391                                .absolute()
2392                                .top_0()
2393                                .right(px(-1.0))
2394                                .w(px(441.))
2395                                .h(px(167.))
2396                                .child(
2397                                    Vector::new(
2398                                        VectorName::Grid,
2399                                        rems_from_px(441.),
2400                                        rems_from_px(167.),
2401                                    )
2402                                    .color(ui::Color::Custom(cx.theme().colors().text.alpha(0.1))),
2403                                ),
2404                        )
2405                        .child(
2406                            div()
2407                                .absolute()
2408                                .top(px(-8.0))
2409                                .right_0()
2410                                .w(px(400.))
2411                                .h(px(92.))
2412                                .child(
2413                                    Vector::new(
2414                                        VectorName::AiGrid,
2415                                        rems_from_px(400.),
2416                                        rems_from_px(92.),
2417                                    )
2418                                    .color(ui::Color::Custom(cx.theme().colors().text.alpha(0.32))),
2419                                ),
2420                        )
2421                        // .child(
2422                        //     div()
2423                        //         .absolute()
2424                        //         .top_0()
2425                        //         .right(px(360.))
2426                        //         .size(px(401.))
2427                        //         .overflow_hidden()
2428                        //         .bg(cx.theme().colors().panel_background)
2429                        // )
2430                        .child(
2431                            div()
2432                                .absolute()
2433                                .top_0()
2434                                .right_0()
2435                                .w(px(660.))
2436                                .h(px(401.))
2437                                .overflow_hidden()
2438                                .bg(linear_gradient(
2439                                    75.,
2440                                    linear_color_stop(
2441                                        cx.theme().colors().panel_background.alpha(0.01),
2442                                        1.0,
2443                                    ),
2444                                    linear_color_stop(cx.theme().colors().panel_background, 0.45),
2445                                )),
2446                        )
2447                        .child(content),
2448                ),
2449        )
2450    }
2451
2452    fn render_thread_empty_state(
2453        &self,
2454        window: &mut Window,
2455        cx: &mut Context<Self>,
2456    ) -> impl IntoElement {
2457        let recent_history = self
2458            .history_store
2459            .update(cx, |this, cx| this.recent_entries(6, cx));
2460
2461        let model_registry = LanguageModelRegistry::read_global(cx);
2462        let configuration_error =
2463            model_registry.configuration_error(model_registry.default_model(), cx);
2464        let no_error = configuration_error.is_none();
2465        let focus_handle = self.focus_handle(cx);
2466
2467        v_flex()
2468            .size_full()
2469            .bg(cx.theme().colors().panel_background)
2470            .when(recent_history.is_empty(), |this| {
2471                let configuration_error_ref = &configuration_error;
2472                this.child(
2473                    v_flex()
2474                        .size_full()
2475                        .max_w_80()
2476                        .mx_auto()
2477                        .justify_center()
2478                        .items_center()
2479                        .gap_1()
2480                        .child(h_flex().child(Headline::new("Welcome to the Agent Panel")))
2481                        .when(no_error, |parent| {
2482                            parent
2483                                .child(
2484                                    h_flex().child(
2485                                        Label::new("Ask and build anything.")
2486                                            .color(Color::Muted)
2487                                            .mb_2p5(),
2488                                    ),
2489                                )
2490                                .child(
2491                                    Button::new("new-thread", "Start New Thread")
2492                                        .icon(IconName::Plus)
2493                                        .icon_position(IconPosition::Start)
2494                                        .icon_size(IconSize::Small)
2495                                        .icon_color(Color::Muted)
2496                                        .full_width()
2497                                        .key_binding(KeyBinding::for_action_in(
2498                                            &NewThread::default(),
2499                                            &focus_handle,
2500                                            window,
2501                                            cx,
2502                                        ))
2503                                        .on_click(|_event, window, cx| {
2504                                            window.dispatch_action(
2505                                                NewThread::default().boxed_clone(),
2506                                                cx,
2507                                            )
2508                                        }),
2509                                )
2510                                .child(
2511                                    Button::new("context", "Add Context")
2512                                        .icon(IconName::FileCode)
2513                                        .icon_position(IconPosition::Start)
2514                                        .icon_size(IconSize::Small)
2515                                        .icon_color(Color::Muted)
2516                                        .full_width()
2517                                        .key_binding(KeyBinding::for_action_in(
2518                                            &ToggleContextPicker,
2519                                            &focus_handle,
2520                                            window,
2521                                            cx,
2522                                        ))
2523                                        .on_click(|_event, window, cx| {
2524                                            window.dispatch_action(
2525                                                ToggleContextPicker.boxed_clone(),
2526                                                cx,
2527                                            )
2528                                        }),
2529                                )
2530                                .child(
2531                                    Button::new("mode", "Switch Model")
2532                                        .icon(IconName::DatabaseZap)
2533                                        .icon_position(IconPosition::Start)
2534                                        .icon_size(IconSize::Small)
2535                                        .icon_color(Color::Muted)
2536                                        .full_width()
2537                                        .key_binding(KeyBinding::for_action_in(
2538                                            &ToggleModelSelector,
2539                                            &focus_handle,
2540                                            window,
2541                                            cx,
2542                                        ))
2543                                        .on_click(|_event, window, cx| {
2544                                            window.dispatch_action(
2545                                                ToggleModelSelector.boxed_clone(),
2546                                                cx,
2547                                            )
2548                                        }),
2549                                )
2550                                .child(
2551                                    Button::new("settings", "View Settings")
2552                                        .icon(IconName::Settings)
2553                                        .icon_position(IconPosition::Start)
2554                                        .icon_size(IconSize::Small)
2555                                        .icon_color(Color::Muted)
2556                                        .full_width()
2557                                        .key_binding(KeyBinding::for_action_in(
2558                                            &OpenConfiguration,
2559                                            &focus_handle,
2560                                            window,
2561                                            cx,
2562                                        ))
2563                                        .on_click(|_event, window, cx| {
2564                                            window.dispatch_action(
2565                                                OpenConfiguration.boxed_clone(),
2566                                                cx,
2567                                            )
2568                                        }),
2569                                )
2570                        })
2571                        .map(|parent| match configuration_error_ref {
2572                            Some(
2573                                err @ (ConfigurationError::ModelNotFound
2574                                | ConfigurationError::ProviderNotAuthenticated(_)
2575                                | ConfigurationError::NoProvider),
2576                            ) => parent
2577                                .child(h_flex().child(
2578                                    Label::new(err.to_string()).color(Color::Muted).mb_2p5(),
2579                                ))
2580                                .child(
2581                                    Button::new("settings", "Configure a Provider")
2582                                        .icon(IconName::Settings)
2583                                        .icon_position(IconPosition::Start)
2584                                        .icon_size(IconSize::Small)
2585                                        .icon_color(Color::Muted)
2586                                        .full_width()
2587                                        .key_binding(KeyBinding::for_action_in(
2588                                            &OpenConfiguration,
2589                                            &focus_handle,
2590                                            window,
2591                                            cx,
2592                                        ))
2593                                        .on_click(|_event, window, cx| {
2594                                            window.dispatch_action(
2595                                                OpenConfiguration.boxed_clone(),
2596                                                cx,
2597                                            )
2598                                        }),
2599                                ),
2600                            Some(ConfigurationError::ProviderPendingTermsAcceptance(provider)) => {
2601                                parent.children(provider.render_accept_terms(
2602                                    LanguageModelProviderTosView::ThreadFreshStart,
2603                                    cx,
2604                                ))
2605                            }
2606                            None => parent,
2607                        }),
2608                )
2609            })
2610            .when(!recent_history.is_empty(), |parent| {
2611                let focus_handle = focus_handle.clone();
2612                let configuration_error_ref = &configuration_error;
2613
2614                parent
2615                    .overflow_hidden()
2616                    .p_1p5()
2617                    .justify_end()
2618                    .gap_1()
2619                    .child(
2620                        h_flex()
2621                            .pl_1p5()
2622                            .pb_1()
2623                            .w_full()
2624                            .justify_between()
2625                            .border_b_1()
2626                            .border_color(cx.theme().colors().border_variant)
2627                            .child(
2628                                Label::new("Recent")
2629                                    .size(LabelSize::Small)
2630                                    .color(Color::Muted),
2631                            )
2632                            .child(
2633                                Button::new("view-history", "View All")
2634                                    .style(ButtonStyle::Subtle)
2635                                    .label_size(LabelSize::Small)
2636                                    .key_binding(
2637                                        KeyBinding::for_action_in(
2638                                            &OpenHistory,
2639                                            &self.focus_handle(cx),
2640                                            window,
2641                                            cx,
2642                                        )
2643                                        .map(|kb| kb.size(rems_from_px(12.))),
2644                                    )
2645                                    .on_click(move |_event, window, cx| {
2646                                        window.dispatch_action(OpenHistory.boxed_clone(), cx);
2647                                    }),
2648                            ),
2649                    )
2650                    .child(
2651                        v_flex()
2652                            .gap_1()
2653                            .children(recent_history.into_iter().enumerate().map(
2654                                |(index, entry)| {
2655                                    // TODO: Add keyboard navigation.
2656                                    let is_hovered =
2657                                        self.hovered_recent_history_item == Some(index);
2658                                    HistoryEntryElement::new(entry.clone(), cx.entity().downgrade())
2659                                        .hovered(is_hovered)
2660                                        .on_hover(cx.listener(
2661                                            move |this, is_hovered, _window, cx| {
2662                                                if *is_hovered {
2663                                                    this.hovered_recent_history_item = Some(index);
2664                                                } else if this.hovered_recent_history_item
2665                                                    == Some(index)
2666                                                {
2667                                                    this.hovered_recent_history_item = None;
2668                                                }
2669                                                cx.notify();
2670                                            },
2671                                        ))
2672                                        .into_any_element()
2673                                },
2674                            )),
2675                    )
2676                    .map(|parent| match configuration_error_ref {
2677                        Some(
2678                            err @ (ConfigurationError::ModelNotFound
2679                            | ConfigurationError::ProviderNotAuthenticated(_)
2680                            | ConfigurationError::NoProvider),
2681                        ) => parent.child(
2682                            Banner::new()
2683                                .severity(ui::Severity::Warning)
2684                                .child(Label::new(err.to_string()).size(LabelSize::Small))
2685                                .action_slot(
2686                                    Button::new("settings", "Configure Provider")
2687                                        .style(ButtonStyle::Tinted(ui::TintColor::Warning))
2688                                        .label_size(LabelSize::Small)
2689                                        .key_binding(
2690                                            KeyBinding::for_action_in(
2691                                                &OpenConfiguration,
2692                                                &focus_handle,
2693                                                window,
2694                                                cx,
2695                                            )
2696                                            .map(|kb| kb.size(rems_from_px(12.))),
2697                                        )
2698                                        .on_click(|_event, window, cx| {
2699                                            window.dispatch_action(
2700                                                OpenConfiguration.boxed_clone(),
2701                                                cx,
2702                                            )
2703                                        }),
2704                                ),
2705                        ),
2706                        Some(ConfigurationError::ProviderPendingTermsAcceptance(provider)) => {
2707                            parent.child(Banner::new().severity(ui::Severity::Warning).child(
2708                                h_flex().w_full().children(provider.render_accept_terms(
2709                                    LanguageModelProviderTosView::ThreadtEmptyState,
2710                                    cx,
2711                                )),
2712                            ))
2713                        }
2714                        None => parent,
2715                    })
2716            })
2717    }
2718
2719    fn render_tool_use_limit_reached(
2720        &self,
2721        window: &mut Window,
2722        cx: &mut Context<Self>,
2723    ) -> Option<AnyElement> {
2724        let active_thread = match &self.active_view {
2725            ActiveView::Thread { thread, .. } => thread,
2726            ActiveView::Agent2Thread { .. } => {
2727                // todo!
2728                return None;
2729            }
2730            ActiveView::TextThread { .. } | ActiveView::History | ActiveView::Configuration => {
2731                return None;
2732            }
2733        };
2734
2735        let thread = active_thread.read(cx).thread().read(cx);
2736
2737        let tool_use_limit_reached = thread.tool_use_limit_reached();
2738        if !tool_use_limit_reached {
2739            return None;
2740        }
2741
2742        let model = thread.configured_model()?.model;
2743
2744        let focus_handle = self.focus_handle(cx);
2745
2746        let banner = Banner::new()
2747            .severity(ui::Severity::Info)
2748            .child(Label::new("Consecutive tool use limit reached.").size(LabelSize::Small))
2749            .action_slot(
2750                h_flex()
2751                    .gap_1()
2752                    .child(
2753                        Button::new("continue-conversation", "Continue")
2754                            .layer(ElevationIndex::ModalSurface)
2755                            .label_size(LabelSize::Small)
2756                            .key_binding(
2757                                KeyBinding::for_action_in(
2758                                    &ContinueThread,
2759                                    &focus_handle,
2760                                    window,
2761                                    cx,
2762                                )
2763                                .map(|kb| kb.size(rems_from_px(10.))),
2764                            )
2765                            .on_click(cx.listener(|this, _, window, cx| {
2766                                this.continue_conversation(window, cx);
2767                            })),
2768                    )
2769                    .when(model.supports_max_mode(), |this| {
2770                        this.child(
2771                            Button::new("continue-burn-mode", "Continue with Burn Mode")
2772                                .style(ButtonStyle::Filled)
2773                                .style(ButtonStyle::Tinted(ui::TintColor::Accent))
2774                                .layer(ElevationIndex::ModalSurface)
2775                                .label_size(LabelSize::Small)
2776                                .key_binding(
2777                                    KeyBinding::for_action_in(
2778                                        &ContinueWithBurnMode,
2779                                        &focus_handle,
2780                                        window,
2781                                        cx,
2782                                    )
2783                                    .map(|kb| kb.size(rems_from_px(10.))),
2784                                )
2785                                .tooltip(Tooltip::text("Enable Burn Mode for unlimited tool use."))
2786                                .on_click({
2787                                    let active_thread = active_thread.clone();
2788                                    cx.listener(move |this, _, window, cx| {
2789                                        active_thread.update(cx, |active_thread, cx| {
2790                                            active_thread.thread().update(cx, |thread, _cx| {
2791                                                thread.set_completion_mode(CompletionMode::Burn);
2792                                            });
2793                                        });
2794                                        this.continue_conversation(window, cx);
2795                                    })
2796                                }),
2797                        )
2798                    }),
2799            );
2800
2801        Some(div().px_2().pb_2().child(banner).into_any_element())
2802    }
2803
2804    fn render_payment_required_error(
2805        &self,
2806        thread: &Entity<ActiveThread>,
2807        cx: &mut Context<Self>,
2808    ) -> AnyElement {
2809        const ERROR_MESSAGE: &str = "Free tier exceeded. Subscribe and add payment to continue using Zed LLMs. You'll be billed at cost for tokens used.";
2810
2811        v_flex()
2812            .gap_0p5()
2813            .child(
2814                h_flex()
2815                    .gap_1p5()
2816                    .items_center()
2817                    .child(Icon::new(IconName::XCircle).color(Color::Error))
2818                    .child(Label::new("Free Usage Exceeded").weight(FontWeight::MEDIUM)),
2819            )
2820            .child(
2821                div()
2822                    .id("error-message")
2823                    .max_h_24()
2824                    .overflow_y_scroll()
2825                    .child(Label::new(ERROR_MESSAGE)),
2826            )
2827            .child(
2828                h_flex()
2829                    .justify_end()
2830                    .mt_1()
2831                    .gap_1()
2832                    .child(self.create_copy_button(ERROR_MESSAGE))
2833                    .child(Button::new("subscribe", "Subscribe").on_click(cx.listener({
2834                        let thread = thread.clone();
2835                        move |_, _, _, cx| {
2836                            thread.update(cx, |this, _cx| {
2837                                this.clear_last_error();
2838                            });
2839
2840                            cx.open_url(&zed_urls::account_url(cx));
2841                            cx.notify();
2842                        }
2843                    })))
2844                    .child(Button::new("dismiss", "Dismiss").on_click(cx.listener({
2845                        let thread = thread.clone();
2846                        move |_, _, _, cx| {
2847                            thread.update(cx, |this, _cx| {
2848                                this.clear_last_error();
2849                            });
2850
2851                            cx.notify();
2852                        }
2853                    }))),
2854            )
2855            .into_any()
2856    }
2857
2858    fn render_model_request_limit_reached_error(
2859        &self,
2860        plan: Plan,
2861        thread: &Entity<ActiveThread>,
2862        cx: &mut Context<Self>,
2863    ) -> AnyElement {
2864        let error_message = match plan {
2865            Plan::ZedPro => {
2866                "Model request limit reached. Upgrade to usage-based billing for more requests."
2867            }
2868            Plan::ZedProTrial => {
2869                "Model request limit reached. Upgrade to Zed Pro for more requests."
2870            }
2871            Plan::Free => "Model request limit reached. Upgrade to Zed Pro for more requests.",
2872        };
2873        let call_to_action = match plan {
2874            Plan::ZedPro => "Upgrade to usage-based billing",
2875            Plan::ZedProTrial => "Upgrade to Zed Pro",
2876            Plan::Free => "Upgrade to Zed Pro",
2877        };
2878
2879        v_flex()
2880            .gap_0p5()
2881            .child(
2882                h_flex()
2883                    .gap_1p5()
2884                    .items_center()
2885                    .child(Icon::new(IconName::XCircle).color(Color::Error))
2886                    .child(Label::new("Model Request Limit Reached").weight(FontWeight::MEDIUM)),
2887            )
2888            .child(
2889                div()
2890                    .id("error-message")
2891                    .max_h_24()
2892                    .overflow_y_scroll()
2893                    .child(Label::new(error_message)),
2894            )
2895            .child(
2896                h_flex()
2897                    .justify_end()
2898                    .mt_1()
2899                    .gap_1()
2900                    .child(self.create_copy_button(error_message))
2901                    .child(
2902                        Button::new("subscribe", call_to_action).on_click(cx.listener({
2903                            let thread = thread.clone();
2904                            move |_, _, _, cx| {
2905                                thread.update(cx, |this, _cx| {
2906                                    this.clear_last_error();
2907                                });
2908
2909                                cx.open_url(&zed_urls::account_url(cx));
2910                                cx.notify();
2911                            }
2912                        })),
2913                    )
2914                    .child(Button::new("dismiss", "Dismiss").on_click(cx.listener({
2915                        let thread = thread.clone();
2916                        move |_, _, _, cx| {
2917                            thread.update(cx, |this, _cx| {
2918                                this.clear_last_error();
2919                            });
2920
2921                            cx.notify();
2922                        }
2923                    }))),
2924            )
2925            .into_any()
2926    }
2927
2928    fn render_error_message(
2929        &self,
2930        header: SharedString,
2931        message: SharedString,
2932        thread: &Entity<ActiveThread>,
2933        cx: &mut Context<Self>,
2934    ) -> AnyElement {
2935        let message_with_header = format!("{}\n{}", header, message);
2936        v_flex()
2937            .gap_0p5()
2938            .child(
2939                h_flex()
2940                    .gap_1p5()
2941                    .items_center()
2942                    .child(Icon::new(IconName::XCircle).color(Color::Error))
2943                    .child(Label::new(header).weight(FontWeight::MEDIUM)),
2944            )
2945            .child(
2946                div()
2947                    .id("error-message")
2948                    .max_h_32()
2949                    .overflow_y_scroll()
2950                    .child(Label::new(message.clone())),
2951            )
2952            .child(
2953                h_flex()
2954                    .justify_end()
2955                    .mt_1()
2956                    .gap_1()
2957                    .child(self.create_copy_button(message_with_header))
2958                    .child(Button::new("dismiss", "Dismiss").on_click(cx.listener({
2959                        let thread = thread.clone();
2960                        move |_, _, _, cx| {
2961                            thread.update(cx, |this, _cx| {
2962                                this.clear_last_error();
2963                            });
2964
2965                            cx.notify();
2966                        }
2967                    }))),
2968            )
2969            .into_any()
2970    }
2971
2972    fn render_prompt_editor(
2973        &self,
2974        context_editor: &Entity<TextThreadEditor>,
2975        buffer_search_bar: &Entity<BufferSearchBar>,
2976        window: &mut Window,
2977        cx: &mut Context<Self>,
2978    ) -> Div {
2979        let mut registrar = buffer_search::DivRegistrar::new(
2980            |this, _, _cx| match &this.active_view {
2981                ActiveView::TextThread {
2982                    buffer_search_bar, ..
2983                } => Some(buffer_search_bar.clone()),
2984                _ => None,
2985            },
2986            cx,
2987        );
2988        BufferSearchBar::register(&mut registrar);
2989        registrar
2990            .into_div()
2991            .size_full()
2992            .relative()
2993            .map(|parent| {
2994                buffer_search_bar.update(cx, |buffer_search_bar, cx| {
2995                    if buffer_search_bar.is_dismissed() {
2996                        return parent;
2997                    }
2998                    parent.child(
2999                        div()
3000                            .p(DynamicSpacing::Base08.rems(cx))
3001                            .border_b_1()
3002                            .border_color(cx.theme().colors().border_variant)
3003                            .bg(cx.theme().colors().editor_background)
3004                            .child(buffer_search_bar.render(window, cx)),
3005                    )
3006                })
3007            })
3008            .child(context_editor.clone())
3009            .child(self.render_drag_target(cx))
3010    }
3011
3012    fn render_drag_target(&self, cx: &Context<Self>) -> Div {
3013        let is_local = self.project.read(cx).is_local();
3014        div()
3015            .invisible()
3016            .absolute()
3017            .top_0()
3018            .right_0()
3019            .bottom_0()
3020            .left_0()
3021            .bg(cx.theme().colors().drop_target_background)
3022            .drag_over::<DraggedTab>(|this, _, _, _| this.visible())
3023            .drag_over::<DraggedSelection>(|this, _, _, _| this.visible())
3024            .when(is_local, |this| {
3025                this.drag_over::<ExternalPaths>(|this, _, _, _| this.visible())
3026            })
3027            .on_drop(cx.listener(move |this, tab: &DraggedTab, window, cx| {
3028                let item = tab.pane.read(cx).item_for_index(tab.ix);
3029                let project_paths = item
3030                    .and_then(|item| item.project_path(cx))
3031                    .into_iter()
3032                    .collect::<Vec<_>>();
3033                this.handle_drop(project_paths, vec![], window, cx);
3034            }))
3035            .on_drop(
3036                cx.listener(move |this, selection: &DraggedSelection, window, cx| {
3037                    let project_paths = selection
3038                        .items()
3039                        .filter_map(|item| this.project.read(cx).path_for_entry(item.entry_id, cx))
3040                        .collect::<Vec<_>>();
3041                    this.handle_drop(project_paths, vec![], window, cx);
3042                }),
3043            )
3044            .on_drop(cx.listener(move |this, paths: &ExternalPaths, window, cx| {
3045                let tasks = paths
3046                    .paths()
3047                    .into_iter()
3048                    .map(|path| {
3049                        Workspace::project_path_for_path(this.project.clone(), &path, false, cx)
3050                    })
3051                    .collect::<Vec<_>>();
3052                cx.spawn_in(window, async move |this, cx| {
3053                    let mut paths = vec![];
3054                    let mut added_worktrees = vec![];
3055                    let opened_paths = futures::future::join_all(tasks).await;
3056                    for entry in opened_paths {
3057                        if let Some((worktree, project_path)) = entry.log_err() {
3058                            added_worktrees.push(worktree);
3059                            paths.push(project_path);
3060                        }
3061                    }
3062                    this.update_in(cx, |this, window, cx| {
3063                        this.handle_drop(paths, added_worktrees, window, cx);
3064                    })
3065                    .ok();
3066                })
3067                .detach();
3068            }))
3069    }
3070
3071    fn handle_drop(
3072        &mut self,
3073        paths: Vec<ProjectPath>,
3074        added_worktrees: Vec<Entity<Worktree>>,
3075        window: &mut Window,
3076        cx: &mut Context<Self>,
3077    ) {
3078        match &self.active_view {
3079            ActiveView::Thread { thread, .. } => {
3080                let context_store = thread.read(cx).context_store().clone();
3081                context_store.update(cx, move |context_store, cx| {
3082                    let mut tasks = Vec::new();
3083                    for project_path in &paths {
3084                        tasks.push(context_store.add_file_from_path(
3085                            project_path.clone(),
3086                            false,
3087                            cx,
3088                        ));
3089                    }
3090                    cx.background_spawn(async move {
3091                        futures::future::join_all(tasks).await;
3092                        // Need to hold onto the worktrees until they have already been used when
3093                        // opening the buffers.
3094                        drop(added_worktrees);
3095                    })
3096                    .detach();
3097                });
3098            }
3099            ActiveView::Agent2Thread { .. } => {
3100                unimplemented!()
3101            }
3102            ActiveView::TextThread { context_editor, .. } => {
3103                context_editor.update(cx, |context_editor, cx| {
3104                    TextThreadEditor::insert_dragged_files(
3105                        context_editor,
3106                        paths,
3107                        added_worktrees,
3108                        window,
3109                        cx,
3110                    );
3111                });
3112            }
3113            ActiveView::History | ActiveView::Configuration => {}
3114        }
3115    }
3116
3117    fn create_copy_button(&self, message: impl Into<String>) -> impl IntoElement {
3118        let message = message.into();
3119        IconButton::new("copy", IconName::Copy)
3120            .on_click(move |_, _, cx| {
3121                cx.write_to_clipboard(ClipboardItem::new_string(message.clone()))
3122            })
3123            .tooltip(Tooltip::text("Copy Error Message"))
3124    }
3125
3126    fn key_context(&self) -> KeyContext {
3127        let mut key_context = KeyContext::new_with_defaults();
3128        key_context.add("AgentPanel");
3129        if matches!(self.active_view, ActiveView::TextThread { .. }) {
3130            key_context.add("prompt_editor");
3131        }
3132        key_context
3133    }
3134}
3135
3136impl Render for AgentPanel {
3137    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3138        // WARNING: Changes to this element hierarchy can have
3139        // non-obvious implications to the layout of children.
3140        //
3141        // If you need to change it, please confirm:
3142        // - The message editor expands (cmd-option-esc) correctly
3143        // - When expanded, the buttons at the bottom of the panel are displayed correctly
3144        // - Font size works as expected and can be changed with cmd-+/cmd-
3145        // - Scrolling in all views works as expected
3146        // - Files can be dropped into the panel
3147        let content = v_flex()
3148            .key_context(self.key_context())
3149            .justify_between()
3150            .size_full()
3151            .on_action(cx.listener(Self::cancel))
3152            .on_action(cx.listener(|this, action: &NewThread, window, cx| {
3153                this.new_thread(action, window, cx);
3154            }))
3155            .on_action(cx.listener(|this, _: &OpenHistory, window, cx| {
3156                this.open_history(window, cx);
3157            }))
3158            .on_action(cx.listener(|this, _: &OpenConfiguration, window, cx| {
3159                this.open_configuration(window, cx);
3160            }))
3161            .on_action(cx.listener(Self::open_active_thread_as_markdown))
3162            .on_action(cx.listener(Self::deploy_rules_library))
3163            .on_action(cx.listener(Self::open_agent_diff))
3164            .on_action(cx.listener(Self::go_back))
3165            .on_action(cx.listener(Self::toggle_navigation_menu))
3166            .on_action(cx.listener(Self::toggle_options_menu))
3167            .on_action(cx.listener(Self::increase_font_size))
3168            .on_action(cx.listener(Self::decrease_font_size))
3169            .on_action(cx.listener(Self::reset_font_size))
3170            .on_action(cx.listener(Self::toggle_zoom))
3171            .on_action(cx.listener(|this, _: &ContinueThread, window, cx| {
3172                this.continue_conversation(window, cx);
3173            }))
3174            .on_action(cx.listener(|this, _: &ContinueWithBurnMode, window, cx| {
3175                match &this.active_view {
3176                    ActiveView::Thread { thread, .. } => {
3177                        thread.update(cx, |active_thread, cx| {
3178                            active_thread.thread().update(cx, |thread, _cx| {
3179                                thread.set_completion_mode(CompletionMode::Burn);
3180                            });
3181                        });
3182                        this.continue_conversation(window, cx);
3183                    }
3184                    ActiveView::Agent2Thread { .. } => {
3185                        todo!()
3186                    }
3187                    ActiveView::TextThread { .. }
3188                    | ActiveView::History
3189                    | ActiveView::Configuration => {}
3190                }
3191            }))
3192            .on_action(cx.listener(Self::toggle_burn_mode))
3193            .child(self.render_toolbar(window, cx))
3194            .children(self.render_upsell(window, cx))
3195            .children(self.render_trial_end_upsell(window, cx))
3196            .map(|parent| match &self.active_view {
3197                ActiveView::Thread {
3198                    thread,
3199                    message_editor,
3200                    ..
3201                } => parent
3202                    .relative()
3203                    .child(if thread.read(cx).is_empty() {
3204                        self.render_thread_empty_state(window, cx)
3205                            .into_any_element()
3206                    } else {
3207                        thread.clone().into_any_element()
3208                    })
3209                    .children(self.render_tool_use_limit_reached(window, cx))
3210                    .child(h_flex().child(message_editor.clone()))
3211                    .when_some(thread.read(cx).last_error(), |this, last_error| {
3212                        this.child(
3213                            div()
3214                                .absolute()
3215                                .right_3()
3216                                .bottom_12()
3217                                .max_w_96()
3218                                .py_2()
3219                                .px_3()
3220                                .elevation_2(cx)
3221                                .occlude()
3222                                .child(match last_error {
3223                                    ThreadError::PaymentRequired => {
3224                                        self.render_payment_required_error(thread, cx)
3225                                    }
3226                                    ThreadError::ModelRequestLimitReached { plan } => self
3227                                        .render_model_request_limit_reached_error(plan, thread, cx),
3228                                    ThreadError::Message { header, message } => {
3229                                        self.render_error_message(header, message, thread, cx)
3230                                    }
3231                                })
3232                                .into_any(),
3233                        )
3234                    })
3235                    .child(self.render_drag_target(cx)),
3236                ActiveView::Agent2Thread { thread_element, .. } => parent
3237                    .relative()
3238                    .child(thread_element.clone())
3239                    // todo!
3240                    // .child(h_flex().child(self.message_editor.clone()))
3241                    .child(self.render_drag_target(cx)),
3242                ActiveView::History => parent.child(self.history.clone()),
3243                ActiveView::TextThread {
3244                    context_editor,
3245                    buffer_search_bar,
3246                    ..
3247                } => parent.child(self.render_prompt_editor(
3248                    context_editor,
3249                    buffer_search_bar,
3250                    window,
3251                    cx,
3252                )),
3253                ActiveView::Configuration => parent.children(self.configuration.clone()),
3254            });
3255
3256        match self.active_view.which_font_size_used() {
3257            WhichFontSize::AgentFont => {
3258                WithRemSize::new(ThemeSettings::get_global(cx).agent_font_size(cx))
3259                    .size_full()
3260                    .child(content)
3261                    .into_any()
3262            }
3263            _ => content.into_any(),
3264        }
3265    }
3266}
3267
3268struct PromptLibraryInlineAssist {
3269    workspace: WeakEntity<Workspace>,
3270}
3271
3272impl PromptLibraryInlineAssist {
3273    pub fn new(workspace: WeakEntity<Workspace>) -> Self {
3274        Self { workspace }
3275    }
3276}
3277
3278impl rules_library::InlineAssistDelegate for PromptLibraryInlineAssist {
3279    fn assist(
3280        &self,
3281        prompt_editor: &Entity<Editor>,
3282        initial_prompt: Option<String>,
3283        window: &mut Window,
3284        cx: &mut Context<RulesLibrary>,
3285    ) {
3286        InlineAssistant::update_global(cx, |assistant, cx| {
3287            let Some(project) = self
3288                .workspace
3289                .upgrade()
3290                .map(|workspace| workspace.read(cx).project().downgrade())
3291            else {
3292                return;
3293            };
3294            let prompt_store = None;
3295            let thread_store = None;
3296            let text_thread_store = None;
3297            let context_store = cx.new(|_| ContextStore::new(project.clone(), None));
3298            assistant.assist(
3299                &prompt_editor,
3300                self.workspace.clone(),
3301                context_store,
3302                project,
3303                prompt_store,
3304                thread_store,
3305                text_thread_store,
3306                initial_prompt,
3307                window,
3308                cx,
3309            )
3310        })
3311    }
3312
3313    fn focus_agent_panel(
3314        &self,
3315        workspace: &mut Workspace,
3316        window: &mut Window,
3317        cx: &mut Context<Workspace>,
3318    ) -> bool {
3319        workspace.focus_panel::<AgentPanel>(window, cx).is_some()
3320    }
3321}
3322
3323pub struct ConcreteAssistantPanelDelegate;
3324
3325impl AgentPanelDelegate for ConcreteAssistantPanelDelegate {
3326    fn active_context_editor(
3327        &self,
3328        workspace: &mut Workspace,
3329        _window: &mut Window,
3330        cx: &mut Context<Workspace>,
3331    ) -> Option<Entity<TextThreadEditor>> {
3332        let panel = workspace.panel::<AgentPanel>(cx)?;
3333        panel.read(cx).active_context_editor()
3334    }
3335
3336    fn open_saved_context(
3337        &self,
3338        workspace: &mut Workspace,
3339        path: Arc<Path>,
3340        window: &mut Window,
3341        cx: &mut Context<Workspace>,
3342    ) -> Task<Result<()>> {
3343        let Some(panel) = workspace.panel::<AgentPanel>(cx) else {
3344            return Task::ready(Err(anyhow!("Agent panel not found")));
3345        };
3346
3347        panel.update(cx, |panel, cx| {
3348            panel.open_saved_prompt_editor(path, window, cx)
3349        })
3350    }
3351
3352    fn open_remote_context(
3353        &self,
3354        _workspace: &mut Workspace,
3355        _context_id: assistant_context::ContextId,
3356        _window: &mut Window,
3357        _cx: &mut Context<Workspace>,
3358    ) -> Task<Result<Entity<TextThreadEditor>>> {
3359        Task::ready(Err(anyhow!("opening remote context not implemented")))
3360    }
3361
3362    fn quote_selection(
3363        &self,
3364        workspace: &mut Workspace,
3365        selection_ranges: Vec<Range<Anchor>>,
3366        buffer: Entity<MultiBuffer>,
3367        window: &mut Window,
3368        cx: &mut Context<Workspace>,
3369    ) {
3370        let Some(panel) = workspace.panel::<AgentPanel>(cx) else {
3371            return;
3372        };
3373
3374        if !panel.focus_handle(cx).contains_focused(window, cx) {
3375            workspace.toggle_panel_focus::<AgentPanel>(window, cx);
3376        }
3377
3378        panel.update(cx, |_, cx| {
3379            // Wait to create a new context until the workspace is no longer
3380            // being updated.
3381            cx.defer_in(window, move |panel, window, cx| {
3382                if let Some(message_editor) = panel.active_message_editor() {
3383                    message_editor.update(cx, |message_editor, cx| {
3384                        message_editor.context_store().update(cx, |store, cx| {
3385                            let buffer = buffer.read(cx);
3386                            let selection_ranges = selection_ranges
3387                                .into_iter()
3388                                .flat_map(|range| {
3389                                    let (start_buffer, start) =
3390                                        buffer.text_anchor_for_position(range.start, cx)?;
3391                                    let (end_buffer, end) =
3392                                        buffer.text_anchor_for_position(range.end, cx)?;
3393                                    if start_buffer != end_buffer {
3394                                        return None;
3395                                    }
3396                                    Some((start_buffer, start..end))
3397                                })
3398                                .collect::<Vec<_>>();
3399
3400                            for (buffer, range) in selection_ranges {
3401                                store.add_selection(buffer, range, cx);
3402                            }
3403                        })
3404                    })
3405                } else if let Some(context_editor) = panel.active_context_editor() {
3406                    let snapshot = buffer.read(cx).snapshot(cx);
3407                    let selection_ranges = selection_ranges
3408                        .into_iter()
3409                        .map(|range| range.to_point(&snapshot))
3410                        .collect::<Vec<_>>();
3411
3412                    context_editor.update(cx, |context_editor, cx| {
3413                        context_editor.quote_ranges(selection_ranges, snapshot, window, cx)
3414                    });
3415                }
3416            });
3417        });
3418    }
3419}
3420
3421struct Upsell;
3422
3423impl Dismissable for Upsell {
3424    const KEY: &'static str = "dismissed-trial-upsell";
3425}
3426
3427struct TrialEndUpsell;
3428
3429impl Dismissable for TrialEndUpsell {
3430    const KEY: &'static str = "dismissed-trial-end-upsell";
3431}