terminal_view.rs

   1mod persistence;
   2pub mod terminal_button;
   3pub mod terminal_element;
   4
   5use anyhow::anyhow;
   6use context_menu::{ContextMenu, ContextMenuItem};
   7use dirs::home_dir;
   8use gpui::{
   9    actions,
  10    elements::{AnchorCorner, ChildView, Flex, Label, ParentElement, Stack},
  11    geometry::vector::Vector2F,
  12    impl_actions,
  13    keymap_matcher::{KeymapContext, Keystroke},
  14    platform::KeyDownEvent,
  15    AnyElement, AnyViewHandle, AppContext, Element, Entity, ModelHandle, Task, View, ViewContext,
  16    ViewHandle, WeakViewHandle,
  17};
  18use project::{LocalWorktree, Project};
  19use serde::Deserialize;
  20use settings::{Settings, TerminalBlink, WorkingDirectory};
  21use smallvec::{smallvec, SmallVec};
  22use smol::Timer;
  23use std::{
  24    borrow::Cow,
  25    ops::RangeInclusive,
  26    path::{Path, PathBuf},
  27    time::Duration,
  28};
  29use terminal::{
  30    alacritty_terminal::{
  31        index::Point,
  32        term::{search::RegexSearch, TermMode},
  33    },
  34    Event, Terminal,
  35};
  36use util::ResultExt;
  37use workspace::{
  38    item::{BreadcrumbText, Item, ItemEvent},
  39    notifications::NotifyResultExt,
  40    pane, register_deserializable_item,
  41    searchable::{SearchEvent, SearchOptions, SearchableItem, SearchableItemHandle},
  42    Pane, ToolbarItemLocation, Workspace, WorkspaceId,
  43};
  44
  45use crate::{persistence::TERMINAL_DB, terminal_element::TerminalElement};
  46
  47const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
  48
  49///Event to transmit the scroll from the element to the view
  50#[derive(Clone, Debug, PartialEq)]
  51pub struct ScrollTerminal(pub i32);
  52
  53#[derive(Clone, Default, Deserialize, PartialEq)]
  54pub struct SendText(String);
  55
  56#[derive(Clone, Default, Deserialize, PartialEq)]
  57pub struct SendKeystroke(String);
  58
  59actions!(
  60    terminal,
  61    [Clear, Copy, Paste, ShowCharacterPalette, SearchTest]
  62);
  63
  64impl_actions!(terminal, [SendText, SendKeystroke]);
  65
  66pub fn init(cx: &mut AppContext) {
  67    cx.add_action(TerminalView::deploy);
  68
  69    register_deserializable_item::<TerminalView>(cx);
  70
  71    //Useful terminal views
  72    cx.add_action(TerminalView::send_text);
  73    cx.add_action(TerminalView::send_keystroke);
  74    cx.add_action(TerminalView::copy);
  75    cx.add_action(TerminalView::paste);
  76    cx.add_action(TerminalView::clear);
  77    cx.add_action(TerminalView::show_character_palette);
  78}
  79
  80///A terminal view, maintains the PTY's file handles and communicates with the terminal
  81pub struct TerminalView {
  82    terminal: ModelHandle<Terminal>,
  83    has_new_content: bool,
  84    //Currently using iTerm bell, show bell emoji in tab until input is received
  85    has_bell: bool,
  86    context_menu: ViewHandle<ContextMenu>,
  87    blink_state: bool,
  88    blinking_on: bool,
  89    blinking_paused: bool,
  90    blink_epoch: usize,
  91    workspace_id: WorkspaceId,
  92}
  93
  94impl Entity for TerminalView {
  95    type Event = Event;
  96}
  97
  98impl TerminalView {
  99    ///Create a new Terminal in the current working directory or the user's home directory
 100    pub fn deploy(
 101        workspace: &mut Workspace,
 102        _: &workspace::NewTerminal,
 103        cx: &mut ViewContext<Workspace>,
 104    ) {
 105        let strategy = cx.global::<Settings>().terminal_strategy();
 106
 107        let working_directory = get_working_directory(workspace, cx, strategy);
 108
 109        let window_id = cx.window_id();
 110        let terminal = workspace
 111            .project()
 112            .update(cx, |project, cx| {
 113                project.create_terminal(working_directory, window_id, cx)
 114            })
 115            .notify_err(workspace, cx);
 116
 117        if let Some(terminal) = terminal {
 118            let view = cx.add_view(|cx| TerminalView::new(terminal, workspace.database_id(), cx));
 119            workspace.add_item(Box::new(view), cx)
 120        }
 121    }
 122
 123    pub fn new(
 124        terminal: ModelHandle<Terminal>,
 125        workspace_id: WorkspaceId,
 126        cx: &mut ViewContext<Self>,
 127    ) -> Self {
 128        cx.observe(&terminal, |_, _, cx| cx.notify()).detach();
 129        cx.subscribe(&terminal, |this, _, event, cx| match event {
 130            Event::Wakeup => {
 131                if !cx.is_self_focused() {
 132                    this.has_new_content = true;
 133                    cx.notify();
 134                }
 135                cx.emit(Event::Wakeup);
 136            }
 137            Event::Bell => {
 138                this.has_bell = true;
 139                cx.emit(Event::Wakeup);
 140            }
 141            Event::BlinkChanged => this.blinking_on = !this.blinking_on,
 142            Event::TitleChanged => {
 143                if let Some(foreground_info) = &this.terminal().read(cx).foreground_process_info {
 144                    let cwd = foreground_info.cwd.clone();
 145
 146                    let item_id = cx.view_id();
 147                    let workspace_id = this.workspace_id;
 148                    cx.background()
 149                        .spawn(async move {
 150                            TERMINAL_DB
 151                                .save_working_directory(item_id, workspace_id, cwd)
 152                                .await
 153                                .log_err();
 154                        })
 155                        .detach();
 156                }
 157            }
 158            _ => cx.emit(*event),
 159        })
 160        .detach();
 161
 162        Self {
 163            terminal,
 164            has_new_content: true,
 165            has_bell: false,
 166            context_menu: cx.add_view(ContextMenu::new),
 167            blink_state: true,
 168            blinking_on: false,
 169            blinking_paused: false,
 170            blink_epoch: 0,
 171            workspace_id,
 172        }
 173    }
 174
 175    pub fn model(&self) -> &ModelHandle<Terminal> {
 176        &self.terminal
 177    }
 178
 179    pub fn has_new_content(&self) -> bool {
 180        self.has_new_content
 181    }
 182
 183    pub fn has_bell(&self) -> bool {
 184        self.has_bell
 185    }
 186
 187    pub fn clear_bel(&mut self, cx: &mut ViewContext<TerminalView>) {
 188        self.has_bell = false;
 189        cx.emit(Event::Wakeup);
 190    }
 191
 192    pub fn deploy_context_menu(&mut self, position: Vector2F, cx: &mut ViewContext<Self>) {
 193        let menu_entries = vec![
 194            ContextMenuItem::action("Clear", Clear),
 195            ContextMenuItem::action("Close", pane::CloseActiveItem),
 196        ];
 197
 198        self.context_menu.update(cx, |menu, cx| {
 199            menu.show(position, AnchorCorner::TopLeft, menu_entries, cx)
 200        });
 201
 202        cx.notify();
 203    }
 204
 205    fn show_character_palette(&mut self, _: &ShowCharacterPalette, cx: &mut ViewContext<Self>) {
 206        if !self
 207            .terminal
 208            .read(cx)
 209            .last_content
 210            .mode
 211            .contains(TermMode::ALT_SCREEN)
 212        {
 213            cx.show_character_palette();
 214        } else {
 215            self.terminal.update(cx, |term, cx| {
 216                term.try_keystroke(
 217                    &Keystroke::parse("ctrl-cmd-space").unwrap(),
 218                    cx.global::<Settings>()
 219                        .terminal_overrides
 220                        .option_as_meta
 221                        .unwrap_or(false),
 222                )
 223            });
 224        }
 225    }
 226
 227    fn clear(&mut self, _: &Clear, cx: &mut ViewContext<Self>) {
 228        self.terminal.update(cx, |term, _| term.clear());
 229        cx.notify();
 230    }
 231
 232    pub fn should_show_cursor(&self, focused: bool, cx: &mut gpui::ViewContext<Self>) -> bool {
 233        //Don't blink the cursor when not focused, blinking is disabled, or paused
 234        if !focused
 235            || !self.blinking_on
 236            || self.blinking_paused
 237            || self
 238                .terminal
 239                .read(cx)
 240                .last_content
 241                .mode
 242                .contains(TermMode::ALT_SCREEN)
 243        {
 244            return true;
 245        }
 246
 247        let setting = {
 248            let settings = cx.global::<Settings>();
 249            settings
 250                .terminal_overrides
 251                .blinking
 252                .clone()
 253                .unwrap_or(TerminalBlink::TerminalControlled)
 254        };
 255
 256        match setting {
 257            //If the user requested to never blink, don't blink it.
 258            TerminalBlink::Off => true,
 259            //If the terminal is controlling it, check terminal mode
 260            TerminalBlink::TerminalControlled | TerminalBlink::On => self.blink_state,
 261        }
 262    }
 263
 264    fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
 265        if epoch == self.blink_epoch && !self.blinking_paused {
 266            self.blink_state = !self.blink_state;
 267            cx.notify();
 268
 269            let epoch = self.next_blink_epoch();
 270            cx.spawn(|this, mut cx| async move {
 271                Timer::after(CURSOR_BLINK_INTERVAL).await;
 272                this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx))
 273                    .log_err();
 274            })
 275            .detach();
 276        }
 277    }
 278
 279    pub fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
 280        self.blink_state = true;
 281        cx.notify();
 282
 283        let epoch = self.next_blink_epoch();
 284        cx.spawn(|this, mut cx| async move {
 285            Timer::after(CURSOR_BLINK_INTERVAL).await;
 286            this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
 287                .log_err();
 288        })
 289        .detach();
 290    }
 291
 292    pub fn find_matches(
 293        &mut self,
 294        query: project::search::SearchQuery,
 295        cx: &mut ViewContext<Self>,
 296    ) -> Task<Vec<RangeInclusive<Point>>> {
 297        let searcher = regex_search_for_query(query);
 298
 299        if let Some(searcher) = searcher {
 300            self.terminal
 301                .update(cx, |term, cx| term.find_matches(searcher, cx))
 302        } else {
 303            cx.background().spawn(async { Vec::new() })
 304        }
 305    }
 306
 307    pub fn terminal(&self) -> &ModelHandle<Terminal> {
 308        &self.terminal
 309    }
 310
 311    fn next_blink_epoch(&mut self) -> usize {
 312        self.blink_epoch += 1;
 313        self.blink_epoch
 314    }
 315
 316    fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
 317        if epoch == self.blink_epoch {
 318            self.blinking_paused = false;
 319            self.blink_cursors(epoch, cx);
 320        }
 321    }
 322
 323    ///Attempt to paste the clipboard into the terminal
 324    fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
 325        self.terminal.update(cx, |term, _| term.copy())
 326    }
 327
 328    ///Attempt to paste the clipboard into the terminal
 329    fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
 330        if let Some(item) = cx.read_from_clipboard() {
 331            self.terminal
 332                .update(cx, |terminal, _cx| terminal.paste(item.text()));
 333        }
 334    }
 335
 336    fn send_text(&mut self, text: &SendText, cx: &mut ViewContext<Self>) {
 337        self.clear_bel(cx);
 338        self.terminal.update(cx, |term, _| {
 339            term.input(text.0.to_string());
 340        });
 341    }
 342
 343    fn send_keystroke(&mut self, text: &SendKeystroke, cx: &mut ViewContext<Self>) {
 344        if let Some(keystroke) = Keystroke::parse(&text.0).log_err() {
 345            self.clear_bel(cx);
 346            self.terminal.update(cx, |term, cx| {
 347                term.try_keystroke(
 348                    &keystroke,
 349                    cx.global::<Settings>()
 350                        .terminal_overrides
 351                        .option_as_meta
 352                        .unwrap_or(false),
 353                );
 354            });
 355        }
 356    }
 357}
 358
 359pub fn regex_search_for_query(query: project::search::SearchQuery) -> Option<RegexSearch> {
 360    let searcher = match query {
 361        project::search::SearchQuery::Text { query, .. } => RegexSearch::new(&query),
 362        project::search::SearchQuery::Regex { query, .. } => RegexSearch::new(&query),
 363    };
 364    searcher.ok()
 365}
 366
 367impl View for TerminalView {
 368    fn ui_name() -> &'static str {
 369        "Terminal"
 370    }
 371
 372    fn render(&mut self, cx: &mut gpui::ViewContext<Self>) -> AnyElement<Self> {
 373        let terminal_handle = self.terminal.clone().downgrade();
 374
 375        let self_id = cx.view_id();
 376        let focused = cx
 377            .focused_view_id()
 378            .filter(|view_id| *view_id == self_id)
 379            .is_some();
 380
 381        Stack::new()
 382            .with_child(
 383                TerminalElement::new(
 384                    terminal_handle,
 385                    focused,
 386                    self.should_show_cursor(focused, cx),
 387                )
 388                .contained(),
 389            )
 390            .with_child(ChildView::new(&self.context_menu, cx))
 391            .into_any()
 392    }
 393
 394    fn focus_in(&mut self, _: AnyViewHandle, cx: &mut ViewContext<Self>) {
 395        self.has_new_content = false;
 396        self.terminal.read(cx).focus_in();
 397        self.blink_cursors(self.blink_epoch, cx);
 398        cx.notify();
 399    }
 400
 401    fn focus_out(&mut self, _: AnyViewHandle, cx: &mut ViewContext<Self>) {
 402        self.terminal.update(cx, |terminal, _| {
 403            terminal.focus_out();
 404        });
 405        cx.notify();
 406    }
 407
 408    fn key_down(&mut self, event: &KeyDownEvent, cx: &mut ViewContext<Self>) -> bool {
 409        self.clear_bel(cx);
 410        self.pause_cursor_blinking(cx);
 411
 412        self.terminal.update(cx, |term, cx| {
 413            term.try_keystroke(
 414                &event.keystroke,
 415                cx.global::<Settings>()
 416                    .terminal_overrides
 417                    .option_as_meta
 418                    .unwrap_or(false),
 419            )
 420        })
 421    }
 422
 423    //IME stuff
 424    fn selected_text_range(&self, cx: &AppContext) -> Option<std::ops::Range<usize>> {
 425        if self
 426            .terminal
 427            .read(cx)
 428            .last_content
 429            .mode
 430            .contains(TermMode::ALT_SCREEN)
 431        {
 432            None
 433        } else {
 434            Some(0..0)
 435        }
 436    }
 437
 438    fn replace_text_in_range(
 439        &mut self,
 440        _: Option<std::ops::Range<usize>>,
 441        text: &str,
 442        cx: &mut ViewContext<Self>,
 443    ) {
 444        self.terminal.update(cx, |terminal, _| {
 445            terminal.input(text.into());
 446        });
 447    }
 448
 449    fn keymap_context(&self, cx: &gpui::AppContext) -> KeymapContext {
 450        let mut context = Self::default_keymap_context();
 451
 452        let mode = self.terminal.read(cx).last_content.mode;
 453        context.add_key(
 454            "screen",
 455            if mode.contains(TermMode::ALT_SCREEN) {
 456                "alt"
 457            } else {
 458                "normal"
 459            },
 460        );
 461
 462        if mode.contains(TermMode::APP_CURSOR) {
 463            context.add_identifier("DECCKM");
 464        }
 465        if mode.contains(TermMode::APP_KEYPAD) {
 466            context.add_identifier("DECPAM");
 467        } else {
 468            context.add_identifier("DECPNM");
 469        }
 470        if mode.contains(TermMode::SHOW_CURSOR) {
 471            context.add_identifier("DECTCEM");
 472        }
 473        if mode.contains(TermMode::LINE_WRAP) {
 474            context.add_identifier("DECAWM");
 475        }
 476        if mode.contains(TermMode::ORIGIN) {
 477            context.add_identifier("DECOM");
 478        }
 479        if mode.contains(TermMode::INSERT) {
 480            context.add_identifier("IRM");
 481        }
 482        //LNM is apparently the name for this. https://vt100.net/docs/vt510-rm/LNM.html
 483        if mode.contains(TermMode::LINE_FEED_NEW_LINE) {
 484            context.add_identifier("LNM");
 485        }
 486        if mode.contains(TermMode::FOCUS_IN_OUT) {
 487            context.add_identifier("report_focus");
 488        }
 489        if mode.contains(TermMode::ALTERNATE_SCROLL) {
 490            context.add_identifier("alternate_scroll");
 491        }
 492        if mode.contains(TermMode::BRACKETED_PASTE) {
 493            context.add_identifier("bracketed_paste");
 494        }
 495        if mode.intersects(TermMode::MOUSE_MODE) {
 496            context.add_identifier("any_mouse_reporting");
 497        }
 498        {
 499            let mouse_reporting = if mode.contains(TermMode::MOUSE_REPORT_CLICK) {
 500                "click"
 501            } else if mode.contains(TermMode::MOUSE_DRAG) {
 502                "drag"
 503            } else if mode.contains(TermMode::MOUSE_MOTION) {
 504                "motion"
 505            } else {
 506                "off"
 507            };
 508            context.add_key("mouse_reporting", mouse_reporting);
 509        }
 510        {
 511            let format = if mode.contains(TermMode::SGR_MOUSE) {
 512                "sgr"
 513            } else if mode.contains(TermMode::UTF8_MOUSE) {
 514                "utf8"
 515            } else {
 516                "normal"
 517            };
 518            context.add_key("mouse_format", format);
 519        }
 520        context
 521    }
 522}
 523
 524impl Item for TerminalView {
 525    fn tab_tooltip_text(&self, cx: &AppContext) -> Option<Cow<str>> {
 526        Some(self.terminal().read(cx).title().into())
 527    }
 528
 529    fn tab_content<T: View>(
 530        &self,
 531        _detail: Option<usize>,
 532        tab_theme: &theme::Tab,
 533        cx: &gpui::AppContext,
 534    ) -> AnyElement<T> {
 535        let title = self.terminal().read(cx).title();
 536
 537        Flex::row()
 538            .with_child(
 539                gpui::elements::Svg::new("icons/terminal_12.svg")
 540                    .with_color(tab_theme.label.text.color)
 541                    .constrained()
 542                    .with_width(tab_theme.type_icon_width)
 543                    .aligned()
 544                    .contained()
 545                    .with_margin_right(tab_theme.spacing),
 546            )
 547            .with_child(Label::new(title, tab_theme.label.clone()).aligned())
 548            .into_any()
 549    }
 550
 551    fn clone_on_split(
 552        &self,
 553        _workspace_id: WorkspaceId,
 554        _cx: &mut ViewContext<Self>,
 555    ) -> Option<Self> {
 556        //From what I can tell, there's no  way to tell the current working
 557        //Directory of the terminal from outside the shell. There might be
 558        //solutions to this, but they are non-trivial and require more IPC
 559
 560        // Some(TerminalContainer::new(
 561        //     Err(anyhow::anyhow!("failed to instantiate terminal")),
 562        //     workspace_id,
 563        //     cx,
 564        // ))
 565
 566        // TODO
 567        None
 568    }
 569
 570    fn is_dirty(&self, _cx: &gpui::AppContext) -> bool {
 571        self.has_bell()
 572    }
 573
 574    fn has_conflict(&self, _cx: &AppContext) -> bool {
 575        false
 576    }
 577
 578    fn as_searchable(&self, handle: &ViewHandle<Self>) -> Option<Box<dyn SearchableItemHandle>> {
 579        Some(Box::new(handle.clone()))
 580    }
 581
 582    fn to_item_events(event: &Self::Event) -> SmallVec<[ItemEvent; 2]> {
 583        match event {
 584            Event::BreadcrumbsChanged => smallvec![ItemEvent::UpdateBreadcrumbs],
 585            Event::TitleChanged | Event::Wakeup => smallvec![ItemEvent::UpdateTab],
 586            Event::CloseTerminal => smallvec![ItemEvent::CloseItem],
 587            _ => smallvec![],
 588        }
 589    }
 590
 591    fn breadcrumb_location(&self) -> ToolbarItemLocation {
 592        ToolbarItemLocation::PrimaryLeft { flex: None }
 593    }
 594
 595    fn breadcrumbs(&self, _: &theme::Theme, cx: &AppContext) -> Option<Vec<BreadcrumbText>> {
 596        Some(vec![BreadcrumbText {
 597            text: self.terminal().read(cx).breadcrumb_text.clone(),
 598            highlights: None,
 599        }])
 600    }
 601
 602    fn serialized_item_kind() -> Option<&'static str> {
 603        Some("Terminal")
 604    }
 605
 606    fn deserialize(
 607        project: ModelHandle<Project>,
 608        workspace: WeakViewHandle<Workspace>,
 609        workspace_id: workspace::WorkspaceId,
 610        item_id: workspace::ItemId,
 611        cx: &mut ViewContext<Pane>,
 612    ) -> Task<anyhow::Result<ViewHandle<Self>>> {
 613        let window_id = cx.window_id();
 614        cx.spawn(|pane, mut cx| async move {
 615            let cwd = TERMINAL_DB
 616                .get_working_directory(item_id, workspace_id)
 617                .log_err()
 618                .flatten()
 619                .or_else(|| {
 620                    cx.read(|cx| {
 621                        let strategy = cx.global::<Settings>().terminal_strategy();
 622                        workspace
 623                            .upgrade(cx)
 624                            .map(|workspace| {
 625                                get_working_directory(workspace.read(cx), cx, strategy)
 626                            })
 627                            .flatten()
 628                    })
 629                });
 630
 631            let pane = pane
 632                .upgrade(&cx)
 633                .ok_or_else(|| anyhow!("pane was dropped"))?;
 634            cx.update(|cx| {
 635                let terminal = project.update(cx, |project, cx| {
 636                    project.create_terminal(cwd, window_id, cx)
 637                })?;
 638
 639                Ok(cx.add_view(&pane, |cx| TerminalView::new(terminal, workspace_id, cx)))
 640            })
 641        })
 642    }
 643
 644    fn added_to_workspace(&mut self, workspace: &mut Workspace, cx: &mut ViewContext<Self>) {
 645        cx.background()
 646            .spawn(TERMINAL_DB.update_workspace_id(
 647                workspace.database_id(),
 648                self.workspace_id,
 649                cx.view_id(),
 650            ))
 651            .detach();
 652        self.workspace_id = workspace.database_id();
 653    }
 654}
 655
 656impl SearchableItem for TerminalView {
 657    type Match = RangeInclusive<Point>;
 658
 659    fn supported_options() -> SearchOptions {
 660        SearchOptions {
 661            case: false,
 662            word: false,
 663            regex: false,
 664        }
 665    }
 666
 667    /// Convert events raised by this item into search-relevant events (if applicable)
 668    fn to_search_event(event: &Self::Event) -> Option<SearchEvent> {
 669        match event {
 670            Event::Wakeup => Some(SearchEvent::MatchesInvalidated),
 671            Event::SelectionsChanged => Some(SearchEvent::ActiveMatchChanged),
 672            _ => None,
 673        }
 674    }
 675
 676    /// Clear stored matches
 677    fn clear_matches(&mut self, cx: &mut ViewContext<Self>) {
 678        self.terminal().update(cx, |term, _| term.matches.clear())
 679    }
 680
 681    /// Store matches returned from find_matches somewhere for rendering
 682    fn update_matches(&mut self, matches: Vec<Self::Match>, cx: &mut ViewContext<Self>) {
 683        self.terminal().update(cx, |term, _| term.matches = matches)
 684    }
 685
 686    /// Return the selection content to pre-load into this search
 687    fn query_suggestion(&mut self, cx: &mut ViewContext<Self>) -> String {
 688        self.terminal()
 689            .read(cx)
 690            .last_content
 691            .selection_text
 692            .clone()
 693            .unwrap_or_default()
 694    }
 695
 696    /// Focus match at given index into the Vec of matches
 697    fn activate_match(&mut self, index: usize, _: Vec<Self::Match>, cx: &mut ViewContext<Self>) {
 698        self.terminal()
 699            .update(cx, |term, _| term.activate_match(index));
 700        cx.notify();
 701    }
 702
 703    /// Get all of the matches for this query, should be done on the background
 704    fn find_matches(
 705        &mut self,
 706        query: project::search::SearchQuery,
 707        cx: &mut ViewContext<Self>,
 708    ) -> Task<Vec<Self::Match>> {
 709        if let Some(searcher) = regex_search_for_query(query) {
 710            self.terminal()
 711                .update(cx, |term, cx| term.find_matches(searcher, cx))
 712        } else {
 713            Task::ready(vec![])
 714        }
 715    }
 716
 717    /// Reports back to the search toolbar what the active match should be (the selection)
 718    fn active_match_index(
 719        &mut self,
 720        matches: Vec<Self::Match>,
 721        cx: &mut ViewContext<Self>,
 722    ) -> Option<usize> {
 723        // Selection head might have a value if there's a selection that isn't
 724        // associated with a match. Therefore, if there are no matches, we should
 725        // report None, no matter the state of the terminal
 726        let res = if matches.len() > 0 {
 727            if let Some(selection_head) = self.terminal().read(cx).selection_head {
 728                // If selection head is contained in a match. Return that match
 729                if let Some(ix) = matches
 730                    .iter()
 731                    .enumerate()
 732                    .find(|(_, search_match)| {
 733                        search_match.contains(&selection_head)
 734                            || search_match.start() > &selection_head
 735                    })
 736                    .map(|(ix, _)| ix)
 737                {
 738                    Some(ix)
 739                } else {
 740                    // If no selection after selection head, return the last match
 741                    Some(matches.len().saturating_sub(1))
 742                }
 743            } else {
 744                // Matches found but no active selection, return the first last one (closest to cursor)
 745                Some(matches.len().saturating_sub(1))
 746            }
 747        } else {
 748            None
 749        };
 750
 751        res
 752    }
 753}
 754
 755///Get's the working directory for the given workspace, respecting the user's settings.
 756pub fn get_working_directory(
 757    workspace: &Workspace,
 758    cx: &AppContext,
 759    strategy: WorkingDirectory,
 760) -> Option<PathBuf> {
 761    let res = match strategy {
 762        WorkingDirectory::CurrentProjectDirectory => current_project_directory(workspace, cx)
 763            .or_else(|| first_project_directory(workspace, cx)),
 764        WorkingDirectory::FirstProjectDirectory => first_project_directory(workspace, cx),
 765        WorkingDirectory::AlwaysHome => None,
 766        WorkingDirectory::Always { directory } => {
 767            shellexpand::full(&directory) //TODO handle this better
 768                .ok()
 769                .map(|dir| Path::new(&dir.to_string()).to_path_buf())
 770                .filter(|dir| dir.is_dir())
 771        }
 772    };
 773    res.or_else(home_dir)
 774}
 775
 776///Get's the first project's home directory, or the home directory
 777fn first_project_directory(workspace: &Workspace, cx: &AppContext) -> Option<PathBuf> {
 778    workspace
 779        .worktrees(cx)
 780        .next()
 781        .and_then(|worktree_handle| worktree_handle.read(cx).as_local())
 782        .and_then(get_path_from_wt)
 783}
 784
 785///Gets the intuitively correct working directory from the given workspace
 786///If there is an active entry for this project, returns that entry's worktree root.
 787///If there's no active entry but there is a worktree, returns that worktrees root.
 788///If either of these roots are files, or if there are any other query failures,
 789///  returns the user's home directory
 790fn current_project_directory(workspace: &Workspace, cx: &AppContext) -> Option<PathBuf> {
 791    let project = workspace.project().read(cx);
 792
 793    project
 794        .active_entry()
 795        .and_then(|entry_id| project.worktree_for_entry(entry_id, cx))
 796        .or_else(|| workspace.worktrees(cx).next())
 797        .and_then(|worktree_handle| worktree_handle.read(cx).as_local())
 798        .and_then(get_path_from_wt)
 799}
 800
 801fn get_path_from_wt(wt: &LocalWorktree) -> Option<PathBuf> {
 802    wt.root_entry()
 803        .filter(|re| re.is_dir())
 804        .map(|_| wt.abs_path().to_path_buf())
 805}
 806
 807#[cfg(test)]
 808mod tests {
 809
 810    use super::*;
 811    use gpui::TestAppContext;
 812    use project::{Entry, Project, ProjectPath, Worktree};
 813    use workspace::AppState;
 814
 815    use std::path::Path;
 816
 817    ///Working directory calculation tests
 818
 819    ///No Worktrees in project -> home_dir()
 820    #[gpui::test]
 821    async fn no_worktree(cx: &mut TestAppContext) {
 822        //Setup variables
 823        let (project, workspace) = blank_workspace(cx).await;
 824        //Test
 825        cx.read(|cx| {
 826            let workspace = workspace.read(cx);
 827            let active_entry = project.read(cx).active_entry();
 828
 829            //Make sure enviroment is as expeted
 830            assert!(active_entry.is_none());
 831            assert!(workspace.worktrees(cx).next().is_none());
 832
 833            let res = current_project_directory(workspace, cx);
 834            assert_eq!(res, None);
 835            let res = first_project_directory(workspace, cx);
 836            assert_eq!(res, None);
 837        });
 838    }
 839
 840    ///No active entry, but a worktree, worktree is a file -> home_dir()
 841    #[gpui::test]
 842    async fn no_active_entry_worktree_is_file(cx: &mut TestAppContext) {
 843        //Setup variables
 844
 845        let (project, workspace) = blank_workspace(cx).await;
 846        create_file_wt(project.clone(), "/root.txt", cx).await;
 847
 848        cx.read(|cx| {
 849            let workspace = workspace.read(cx);
 850            let active_entry = project.read(cx).active_entry();
 851
 852            //Make sure enviroment is as expeted
 853            assert!(active_entry.is_none());
 854            assert!(workspace.worktrees(cx).next().is_some());
 855
 856            let res = current_project_directory(workspace, cx);
 857            assert_eq!(res, None);
 858            let res = first_project_directory(workspace, cx);
 859            assert_eq!(res, None);
 860        });
 861    }
 862
 863    //No active entry, but a worktree, worktree is a folder -> worktree_folder
 864    #[gpui::test]
 865    async fn no_active_entry_worktree_is_dir(cx: &mut TestAppContext) {
 866        //Setup variables
 867        let (project, workspace) = blank_workspace(cx).await;
 868        let (_wt, _entry) = create_folder_wt(project.clone(), "/root/", cx).await;
 869
 870        //Test
 871        cx.update(|cx| {
 872            let workspace = workspace.read(cx);
 873            let active_entry = project.read(cx).active_entry();
 874
 875            assert!(active_entry.is_none());
 876            assert!(workspace.worktrees(cx).next().is_some());
 877
 878            let res = current_project_directory(workspace, cx);
 879            assert_eq!(res, Some((Path::new("/root/")).to_path_buf()));
 880            let res = first_project_directory(workspace, cx);
 881            assert_eq!(res, Some((Path::new("/root/")).to_path_buf()));
 882        });
 883    }
 884
 885    //Active entry with a work tree, worktree is a file -> home_dir()
 886    #[gpui::test]
 887    async fn active_entry_worktree_is_file(cx: &mut TestAppContext) {
 888        //Setup variables
 889
 890        let (project, workspace) = blank_workspace(cx).await;
 891        let (_wt, _entry) = create_folder_wt(project.clone(), "/root1/", cx).await;
 892        let (wt2, entry2) = create_file_wt(project.clone(), "/root2.txt", cx).await;
 893        insert_active_entry_for(wt2, entry2, project.clone(), cx);
 894
 895        //Test
 896        cx.update(|cx| {
 897            let workspace = workspace.read(cx);
 898            let active_entry = project.read(cx).active_entry();
 899
 900            assert!(active_entry.is_some());
 901
 902            let res = current_project_directory(workspace, cx);
 903            assert_eq!(res, None);
 904            let res = first_project_directory(workspace, cx);
 905            assert_eq!(res, Some((Path::new("/root1/")).to_path_buf()));
 906        });
 907    }
 908
 909    //Active entry, with a worktree, worktree is a folder -> worktree_folder
 910    #[gpui::test]
 911    async fn active_entry_worktree_is_dir(cx: &mut TestAppContext) {
 912        //Setup variables
 913        let (project, workspace) = blank_workspace(cx).await;
 914        let (_wt, _entry) = create_folder_wt(project.clone(), "/root1/", cx).await;
 915        let (wt2, entry2) = create_folder_wt(project.clone(), "/root2/", cx).await;
 916        insert_active_entry_for(wt2, entry2, project.clone(), cx);
 917
 918        //Test
 919        cx.update(|cx| {
 920            let workspace = workspace.read(cx);
 921            let active_entry = project.read(cx).active_entry();
 922
 923            assert!(active_entry.is_some());
 924
 925            let res = current_project_directory(workspace, cx);
 926            assert_eq!(res, Some((Path::new("/root2/")).to_path_buf()));
 927            let res = first_project_directory(workspace, cx);
 928            assert_eq!(res, Some((Path::new("/root1/")).to_path_buf()));
 929        });
 930    }
 931
 932    ///Creates a worktree with 1 file: /root.txt
 933    pub async fn blank_workspace(
 934        cx: &mut TestAppContext,
 935    ) -> (ModelHandle<Project>, ViewHandle<Workspace>) {
 936        let params = cx.update(AppState::test);
 937
 938        let project = Project::test(params.fs.clone(), [], cx).await;
 939        let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
 940
 941        (project, workspace)
 942    }
 943
 944    ///Creates a worktree with 1 folder: /root{suffix}/
 945    async fn create_folder_wt(
 946        project: ModelHandle<Project>,
 947        path: impl AsRef<Path>,
 948        cx: &mut TestAppContext,
 949    ) -> (ModelHandle<Worktree>, Entry) {
 950        create_wt(project, true, path, cx).await
 951    }
 952
 953    ///Creates a worktree with 1 file: /root{suffix}.txt
 954    async fn create_file_wt(
 955        project: ModelHandle<Project>,
 956        path: impl AsRef<Path>,
 957        cx: &mut TestAppContext,
 958    ) -> (ModelHandle<Worktree>, Entry) {
 959        create_wt(project, false, path, cx).await
 960    }
 961
 962    async fn create_wt(
 963        project: ModelHandle<Project>,
 964        is_dir: bool,
 965        path: impl AsRef<Path>,
 966        cx: &mut TestAppContext,
 967    ) -> (ModelHandle<Worktree>, Entry) {
 968        let (wt, _) = project
 969            .update(cx, |project, cx| {
 970                project.find_or_create_local_worktree(path, true, cx)
 971            })
 972            .await
 973            .unwrap();
 974
 975        let entry = cx
 976            .update(|cx| {
 977                wt.update(cx, |wt, cx| {
 978                    wt.as_local()
 979                        .unwrap()
 980                        .create_entry(Path::new(""), is_dir, cx)
 981                })
 982            })
 983            .await
 984            .unwrap();
 985
 986        (wt, entry)
 987    }
 988
 989    pub fn insert_active_entry_for(
 990        wt: ModelHandle<Worktree>,
 991        entry: Entry,
 992        project: ModelHandle<Project>,
 993        cx: &mut TestAppContext,
 994    ) {
 995        cx.update(|cx| {
 996            let p = ProjectPath {
 997                worktree_id: wt.read(cx).id(),
 998                path: entry.path,
 999            };
1000            project.update(cx, |project, cx| project.set_active_path(Some(p), cx));
1001        });
1002    }
1003}