1use crate::{
2 item::{ClosePosition, Item, ItemHandle, ItemSettings, WeakItemHandle},
3 toolbar::Toolbar,
4 workspace_settings::{AutosaveSetting, WorkspaceSettings},
5 NewCenterTerminal, NewFile, NewSearch, SplitDirection, ToggleZoom, Workspace,
6};
7use anyhow::Result;
8use collections::{HashMap, HashSet, VecDeque};
9use gpui::{
10 actions, impl_actions, overlay, prelude::*, Action, AnchorCorner, AnyElement, AppContext,
11 AsyncWindowContext, DismissEvent, Div, DragMoveEvent, EntityId, EventEmitter, FocusHandle,
12 Focusable, FocusableView, Model, MouseButton, NavigationDirection, Pixels, Point, PromptLevel,
13 Render, ScrollHandle, Subscription, Task, View, ViewContext, VisualContext, WeakView,
14 WindowContext,
15};
16use parking_lot::Mutex;
17use project::{Project, ProjectEntryId, ProjectPath};
18use serde::Deserialize;
19use settings::Settings;
20use std::{
21 any::Any,
22 cmp, fmt, mem,
23 path::{Path, PathBuf},
24 rc::Rc,
25 sync::{
26 atomic::{AtomicUsize, Ordering},
27 Arc,
28 },
29};
30use theme::ThemeSettings;
31
32use ui::{
33 prelude::*, right_click_menu, ButtonSize, Color, Icon, IconButton, IconSize, Indicator, Label,
34 Tab, TabBar, TabPosition, Tooltip,
35};
36use ui::{v_stack, ContextMenu};
37use util::{maybe, truncate_and_remove_front, ResultExt};
38
39#[derive(PartialEq, Clone, Copy, Deserialize, Debug)]
40#[serde(rename_all = "camelCase")]
41pub enum SaveIntent {
42 /// write all files (even if unchanged)
43 /// prompt before overwriting on-disk changes
44 Save,
45 /// write any files that have local changes
46 /// prompt before overwriting on-disk changes
47 SaveAll,
48 /// always prompt for a new path
49 SaveAs,
50 /// prompt "you have unsaved changes" before writing
51 Close,
52 /// write all dirty files, don't prompt on conflict
53 Overwrite,
54 /// skip all save-related behavior
55 Skip,
56}
57
58#[derive(Clone, Deserialize, PartialEq, Debug)]
59pub struct ActivateItem(pub usize);
60
61// #[derive(Clone, PartialEq)]
62// pub struct CloseItemById {
63// pub item_id: usize,
64// pub pane: WeakView<Pane>,
65// }
66
67// #[derive(Clone, PartialEq)]
68// pub struct CloseItemsToTheLeftById {
69// pub item_id: usize,
70// pub pane: WeakView<Pane>,
71// }
72
73// #[derive(Clone, PartialEq)]
74// pub struct CloseItemsToTheRightById {
75// pub item_id: usize,
76// pub pane: WeakView<Pane>,
77// }
78
79#[derive(Clone, PartialEq, Debug, Deserialize, Default)]
80#[serde(rename_all = "camelCase")]
81pub struct CloseActiveItem {
82 pub save_intent: Option<SaveIntent>,
83}
84
85#[derive(Clone, PartialEq, Debug, Deserialize, Default)]
86#[serde(rename_all = "camelCase")]
87pub struct CloseAllItems {
88 pub save_intent: Option<SaveIntent>,
89}
90
91#[derive(Clone, PartialEq, Debug, Deserialize)]
92#[serde(rename_all = "camelCase")]
93pub struct RevealInProjectPanel {
94 pub entry_id: u64,
95}
96
97impl_actions!(
98 pane,
99 [
100 CloseAllItems,
101 CloseActiveItem,
102 ActivateItem,
103 RevealInProjectPanel
104 ]
105);
106
107actions!(
108 pane,
109 [
110 ActivatePrevItem,
111 ActivateNextItem,
112 ActivateLastItem,
113 CloseInactiveItems,
114 CloseCleanItems,
115 CloseItemsToTheLeft,
116 CloseItemsToTheRight,
117 GoBack,
118 GoForward,
119 ReopenClosedItem,
120 SplitLeft,
121 SplitUp,
122 SplitRight,
123 SplitDown,
124 ]
125);
126
127const MAX_NAVIGATION_HISTORY_LEN: usize = 1024;
128
129pub enum Event {
130 AddItem { item: Box<dyn ItemHandle> },
131 ActivateItem { local: bool },
132 Remove,
133 RemoveItem { item_id: EntityId },
134 Split(SplitDirection),
135 ChangeItemTitle,
136 Focus,
137 ZoomIn,
138 ZoomOut,
139}
140
141impl fmt::Debug for Event {
142 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
143 match self {
144 Event::AddItem { item } => f
145 .debug_struct("AddItem")
146 .field("item", &item.item_id())
147 .finish(),
148 Event::ActivateItem { local } => f
149 .debug_struct("ActivateItem")
150 .field("local", local)
151 .finish(),
152 Event::Remove => f.write_str("Remove"),
153 Event::RemoveItem { item_id } => f
154 .debug_struct("RemoveItem")
155 .field("item_id", item_id)
156 .finish(),
157 Event::Split(direction) => f
158 .debug_struct("Split")
159 .field("direction", direction)
160 .finish(),
161 Event::ChangeItemTitle => f.write_str("ChangeItemTitle"),
162 Event::Focus => f.write_str("Focus"),
163 Event::ZoomIn => f.write_str("ZoomIn"),
164 Event::ZoomOut => f.write_str("ZoomOut"),
165 }
166 }
167}
168
169pub struct Pane {
170 focus_handle: FocusHandle,
171 items: Vec<Box<dyn ItemHandle>>,
172 activation_history: Vec<EntityId>,
173 zoomed: bool,
174 was_focused: bool,
175 active_item_index: usize,
176 last_focused_view_by_item: HashMap<EntityId, FocusHandle>,
177 nav_history: NavHistory,
178 toolbar: View<Toolbar>,
179 new_item_menu: Option<View<ContextMenu>>,
180 split_item_menu: Option<View<ContextMenu>>,
181 // tab_context_menu: View<ContextMenu>,
182 workspace: WeakView<Workspace>,
183 project: Model<Project>,
184 drag_split_direction: Option<SplitDirection>,
185 can_drop_predicate: Option<Arc<dyn Fn(&dyn Any, &mut WindowContext) -> bool>>,
186 can_split: bool,
187 render_tab_bar_buttons: Rc<dyn Fn(&mut Pane, &mut ViewContext<Pane>) -> AnyElement>,
188 _subscriptions: Vec<Subscription>,
189 tab_bar_scroll_handle: ScrollHandle,
190}
191
192pub struct ItemNavHistory {
193 history: NavHistory,
194 item: Arc<dyn WeakItemHandle>,
195}
196
197#[derive(Clone)]
198pub struct NavHistory(Arc<Mutex<NavHistoryState>>);
199
200struct NavHistoryState {
201 mode: NavigationMode,
202 backward_stack: VecDeque<NavigationEntry>,
203 forward_stack: VecDeque<NavigationEntry>,
204 closed_stack: VecDeque<NavigationEntry>,
205 paths_by_item: HashMap<EntityId, (ProjectPath, Option<PathBuf>)>,
206 pane: WeakView<Pane>,
207 next_timestamp: Arc<AtomicUsize>,
208}
209
210#[derive(Copy, Clone)]
211pub enum NavigationMode {
212 Normal,
213 GoingBack,
214 GoingForward,
215 ClosingItem,
216 ReopeningClosedItem,
217 Disabled,
218}
219
220impl Default for NavigationMode {
221 fn default() -> Self {
222 Self::Normal
223 }
224}
225
226pub struct NavigationEntry {
227 pub item: Arc<dyn WeakItemHandle>,
228 pub data: Option<Box<dyn Any + Send>>,
229 pub timestamp: usize,
230}
231
232#[derive(Clone)]
233pub struct DraggedTab {
234 pub pane: View<Pane>,
235 pub ix: usize,
236 pub item_id: EntityId,
237 pub detail: usize,
238 pub is_active: bool,
239}
240
241// pub struct DraggedItem {
242// pub handle: Box<dyn ItemHandle>,
243// pub pane: WeakView<Pane>,
244// }
245
246// pub enum ReorderBehavior {
247// None,
248// MoveAfterActive,
249// MoveToIndex(usize),
250// }
251
252// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
253// enum TabBarContextMenuKind {
254// New,
255// Split,
256// }
257
258// struct TabBarContextMenu {
259// kind: TabBarContextMenuKind,
260// handle: View<ContextMenu>,
261// }
262
263// impl TabBarContextMenu {
264// fn handle_if_kind(&self, kind: TabBarContextMenuKind) -> Option<View<ContextMenu>> {
265// if self.kind == kind {
266// return Some(self.handle.clone());
267// }
268// None
269// }
270// }
271
272// #[allow(clippy::too_many_arguments)]
273// fn nav_button<A: Action, F: 'static + Fn(&mut Pane, &mut ViewContext<Pane>)>(
274// svg_path: &'static str,
275// style: theme2::Interactive<theme2::IconButton>,
276// nav_button_height: f32,
277// tooltip_style: TooltipStyle,
278// enabled: bool,
279// on_click: F,
280// tooltip_action: A,
281// action_name: &str,
282// cx: &mut ViewContext<Pane>,
283// ) -> AnyElement<Pane> {
284// MouseEventHandler::new::<A, _>(0, cx, |state, _| {
285// let style = if enabled {
286// style.style_for(state)
287// } else {
288// style.disabled_style()
289// };
290// Svg::new(svg_path)
291// .with_color(style.color)
292// .constrained()
293// .with_width(style.icon_width)
294// .aligned()
295// .contained()
296// .with_style(style.container)
297// .constrained()
298// .with_width(style.button_width)
299// .with_height(nav_button_height)
300// .aligned()
301// .top()
302// })
303// .with_cursor_style(if enabled {
304// CursorStyle::PointingHand
305// } else {
306// CursorStyle::default()
307// })
308// .on_click(MouseButton::Left, move |_, toolbar, cx| {
309// on_click(toolbar, cx)
310// })
311// .with_tooltip::<A>(
312// 0,
313// action_name.to_string(),
314// Some(Box::new(tooltip_action)),
315// tooltip_style,
316// cx,
317// )
318// .contained()
319// .into_any_named("nav button")
320// }
321
322impl EventEmitter<Event> for Pane {}
323
324impl Pane {
325 pub fn new(
326 workspace: WeakView<Workspace>,
327 project: Model<Project>,
328 next_timestamp: Arc<AtomicUsize>,
329 can_drop_predicate: Option<Arc<dyn Fn(&dyn Any, &mut WindowContext) -> bool + 'static>>,
330 cx: &mut ViewContext<Self>,
331 ) -> Self {
332 // todo!("context menu")
333 // let pane_view_id = cx.view_id();
334 // let context_menu = cx.build_view(|cx| ContextMenu::new(pane_view_id, cx));
335 // context_menu.update(cx, |menu, _| {
336 // menu.set_position_mode(OverlayPositionMode::Local)
337 // });
338 //
339 let focus_handle = cx.focus_handle();
340
341 let subscriptions = vec![
342 cx.on_focus_in(&focus_handle, move |this, cx| this.focus_in(cx)),
343 cx.on_focus_out(&focus_handle, move |this, cx| this.focus_out(cx)),
344 ];
345
346 let handle = cx.view().downgrade();
347 Self {
348 focus_handle,
349 items: Vec::new(),
350 activation_history: Vec::new(),
351 was_focused: false,
352 zoomed: false,
353 active_item_index: 0,
354 last_focused_view_by_item: Default::default(),
355 nav_history: NavHistory(Arc::new(Mutex::new(NavHistoryState {
356 mode: NavigationMode::Normal,
357 backward_stack: Default::default(),
358 forward_stack: Default::default(),
359 closed_stack: Default::default(),
360 paths_by_item: Default::default(),
361 pane: handle.clone(),
362 next_timestamp,
363 }))),
364 toolbar: cx.build_view(|_| Toolbar::new()),
365 new_item_menu: None,
366 split_item_menu: None,
367 tab_bar_scroll_handle: ScrollHandle::new(),
368 drag_split_direction: None,
369 // tab_bar_context_menu: TabBarContextMenu {
370 // kind: TabBarContextMenuKind::New,
371 // handle: context_menu,
372 // },
373 // tab_context_menu: cx.build_view(|_| ContextMenu::new(pane_view_id, cx)),
374 workspace,
375 project,
376 can_drop_predicate,
377 can_split: true,
378 render_tab_bar_buttons: Rc::new(move |pane, cx| {
379 h_stack()
380 .child(
381 IconButton::new("plus", Icon::Plus)
382 .icon_size(IconSize::Small)
383 .on_click(cx.listener(|pane, _, cx| {
384 let menu = ContextMenu::build(cx, |menu, _| {
385 menu.action("New File", NewFile.boxed_clone())
386 .action("New Terminal", NewCenterTerminal.boxed_clone())
387 .action("New Search", NewSearch.boxed_clone())
388 });
389 cx.subscribe(&menu, |pane, _, _: &DismissEvent, cx| {
390 pane.focus(cx);
391 pane.new_item_menu = None;
392 })
393 .detach();
394 pane.new_item_menu = Some(menu);
395 }))
396 .tooltip(|cx| Tooltip::text("New...", cx)),
397 )
398 .when_some(pane.new_item_menu.as_ref(), |el, new_item_menu| {
399 el.child(Self::render_menu_overlay(new_item_menu))
400 })
401 .child(
402 IconButton::new("split", Icon::Split)
403 .icon_size(IconSize::Small)
404 .on_click(cx.listener(|pane, _, cx| {
405 let menu = ContextMenu::build(cx, |menu, _| {
406 menu.action("Split Right", SplitRight.boxed_clone())
407 .action("Split Left", SplitLeft.boxed_clone())
408 .action("Split Up", SplitUp.boxed_clone())
409 .action("Split Down", SplitDown.boxed_clone())
410 });
411 cx.subscribe(&menu, |pane, _, _: &DismissEvent, cx| {
412 pane.focus(cx);
413 pane.split_item_menu = None;
414 })
415 .detach();
416 pane.split_item_menu = Some(menu);
417 }))
418 .tooltip(|cx| Tooltip::text("Split Pane", cx)),
419 )
420 .child({
421 let zoomed = pane.is_zoomed();
422 IconButton::new("toggle_zoom", Icon::Maximize)
423 .icon_size(IconSize::Small)
424 .selected(zoomed)
425 .selected_icon(Icon::Minimize)
426 .on_click(cx.listener(|pane, _, cx| {
427 pane.toggle_zoom(&crate::ToggleZoom, cx);
428 }))
429 .tooltip(move |cx| {
430 Tooltip::text(if zoomed { "Zoom Out" } else { "Zoom In" }, cx)
431 })
432 })
433 .when_some(pane.split_item_menu.as_ref(), |el, split_item_menu| {
434 el.child(Self::render_menu_overlay(split_item_menu))
435 })
436 .into_any_element()
437 }),
438 _subscriptions: subscriptions,
439 }
440 }
441
442 pub fn has_focus(&self, cx: &WindowContext) -> bool {
443 // todo!(); // inline this manually
444 self.focus_handle.contains_focused(cx)
445 }
446
447 fn focus_in(&mut self, cx: &mut ViewContext<Self>) {
448 if !self.was_focused {
449 self.was_focused = true;
450 cx.emit(Event::Focus);
451 cx.notify();
452 }
453
454 self.toolbar.update(cx, |toolbar, cx| {
455 toolbar.focus_changed(true, cx);
456 });
457
458 if let Some(active_item) = self.active_item() {
459 if self.focus_handle.is_focused(cx) {
460 // Pane was focused directly. We need to either focus a view inside the active item,
461 // or focus the active item itself
462 if let Some(weak_last_focused_view) =
463 self.last_focused_view_by_item.get(&active_item.item_id())
464 {
465 weak_last_focused_view.focus(cx);
466 return;
467 }
468
469 active_item.focus_handle(cx).focus(cx);
470 } else if let Some(focused) = cx.focused() {
471 if !self.context_menu_focused(cx) {
472 self.last_focused_view_by_item
473 .insert(active_item.item_id(), focused);
474 }
475 }
476 }
477 }
478
479 fn context_menu_focused(&self, cx: &mut ViewContext<Self>) -> bool {
480 self.new_item_menu
481 .as_ref()
482 .or(self.split_item_menu.as_ref())
483 .map_or(false, |menu| menu.focus_handle(cx).is_focused(cx))
484 }
485
486 fn focus_out(&mut self, cx: &mut ViewContext<Self>) {
487 self.was_focused = false;
488 self.toolbar.update(cx, |toolbar, cx| {
489 toolbar.focus_changed(false, cx);
490 });
491 cx.notify();
492 }
493
494 pub fn active_item_index(&self) -> usize {
495 self.active_item_index
496 }
497
498 // pub fn on_can_drop<F>(&mut self, can_drop: F)
499 // where
500 // F: 'static + Fn(&DragAndDrop<Workspace>, &WindowContext) -> bool,
501 // {
502 // self.can_drop = Rc::new(can_drop);
503 // }
504
505 pub fn set_can_split(&mut self, can_split: bool, cx: &mut ViewContext<Self>) {
506 self.can_split = can_split;
507 cx.notify();
508 }
509
510 pub fn set_can_navigate(&mut self, can_navigate: bool, cx: &mut ViewContext<Self>) {
511 self.toolbar.update(cx, |toolbar, cx| {
512 toolbar.set_can_navigate(can_navigate, cx);
513 });
514 cx.notify();
515 }
516
517 pub fn set_render_tab_bar_buttons<F>(&mut self, cx: &mut ViewContext<Self>, render: F)
518 where
519 F: 'static + Fn(&mut Pane, &mut ViewContext<Pane>) -> AnyElement,
520 {
521 self.render_tab_bar_buttons = Rc::new(render);
522 cx.notify();
523 }
524
525 pub fn nav_history_for_item<T: Item>(&self, item: &View<T>) -> ItemNavHistory {
526 ItemNavHistory {
527 history: self.nav_history.clone(),
528 item: Arc::new(item.downgrade()),
529 }
530 }
531
532 pub fn nav_history(&self) -> &NavHistory {
533 &self.nav_history
534 }
535
536 pub fn nav_history_mut(&mut self) -> &mut NavHistory {
537 &mut self.nav_history
538 }
539
540 pub fn disable_history(&mut self) {
541 self.nav_history.disable();
542 }
543
544 pub fn enable_history(&mut self) {
545 self.nav_history.enable();
546 }
547
548 pub fn can_navigate_backward(&self) -> bool {
549 !self.nav_history.0.lock().backward_stack.is_empty()
550 }
551
552 pub fn can_navigate_forward(&self) -> bool {
553 !self.nav_history.0.lock().forward_stack.is_empty()
554 }
555
556 fn navigate_backward(&mut self, cx: &mut ViewContext<Self>) {
557 if let Some(workspace) = self.workspace.upgrade() {
558 let pane = cx.view().downgrade();
559 cx.window_context().defer(move |cx| {
560 workspace.update(cx, |workspace, cx| {
561 workspace.go_back(pane, cx).detach_and_log_err(cx)
562 })
563 })
564 }
565 }
566
567 fn navigate_forward(&mut self, cx: &mut ViewContext<Self>) {
568 if let Some(workspace) = self.workspace.upgrade() {
569 let pane = cx.view().downgrade();
570 cx.window_context().defer(move |cx| {
571 workspace.update(cx, |workspace, cx| {
572 workspace.go_forward(pane, cx).detach_and_log_err(cx)
573 })
574 })
575 }
576 }
577
578 fn history_updated(&mut self, cx: &mut ViewContext<Self>) {
579 self.toolbar.update(cx, |_, cx| cx.notify());
580 }
581
582 pub(crate) fn open_item(
583 &mut self,
584 project_entry_id: Option<ProjectEntryId>,
585 focus_item: bool,
586 cx: &mut ViewContext<Self>,
587 build_item: impl FnOnce(&mut ViewContext<Pane>) -> Box<dyn ItemHandle>,
588 ) -> Box<dyn ItemHandle> {
589 let mut existing_item = None;
590 if let Some(project_entry_id) = project_entry_id {
591 for (index, item) in self.items.iter().enumerate() {
592 if item.is_singleton(cx)
593 && item.project_entry_ids(cx).as_slice() == [project_entry_id]
594 {
595 let item = item.boxed_clone();
596 existing_item = Some((index, item));
597 break;
598 }
599 }
600 }
601
602 if let Some((index, existing_item)) = existing_item {
603 self.activate_item(index, focus_item, focus_item, cx);
604 existing_item
605 } else {
606 let new_item = build_item(cx);
607 self.add_item(new_item.clone(), true, focus_item, None, cx);
608 new_item
609 }
610 }
611
612 pub fn add_item(
613 &mut self,
614 item: Box<dyn ItemHandle>,
615 activate_pane: bool,
616 focus_item: bool,
617 destination_index: Option<usize>,
618 cx: &mut ViewContext<Self>,
619 ) {
620 if item.is_singleton(cx) {
621 if let Some(&entry_id) = item.project_entry_ids(cx).get(0) {
622 let project = self.project.read(cx);
623 if let Some(project_path) = project.path_for_entry(entry_id, cx) {
624 let abs_path = project.absolute_path(&project_path, cx);
625 self.nav_history
626 .0
627 .lock()
628 .paths_by_item
629 .insert(item.item_id(), (project_path, abs_path));
630 }
631 }
632 }
633 // If no destination index is specified, add or move the item after the active item.
634 let mut insertion_index = {
635 cmp::min(
636 if let Some(destination_index) = destination_index {
637 destination_index
638 } else {
639 self.active_item_index + 1
640 },
641 self.items.len(),
642 )
643 };
644
645 // Does the item already exist?
646 let project_entry_id = if item.is_singleton(cx) {
647 item.project_entry_ids(cx).get(0).copied()
648 } else {
649 None
650 };
651
652 let existing_item_index = self.items.iter().position(|existing_item| {
653 if existing_item.item_id() == item.item_id() {
654 true
655 } else if existing_item.is_singleton(cx) {
656 existing_item
657 .project_entry_ids(cx)
658 .get(0)
659 .map_or(false, |existing_entry_id| {
660 Some(existing_entry_id) == project_entry_id.as_ref()
661 })
662 } else {
663 false
664 }
665 });
666
667 if let Some(existing_item_index) = existing_item_index {
668 // If the item already exists, move it to the desired destination and activate it
669
670 if existing_item_index != insertion_index {
671 let existing_item_is_active = existing_item_index == self.active_item_index;
672
673 // If the caller didn't specify a destination and the added item is already
674 // the active one, don't move it
675 if existing_item_is_active && destination_index.is_none() {
676 insertion_index = existing_item_index;
677 } else {
678 self.items.remove(existing_item_index);
679 if existing_item_index < self.active_item_index {
680 self.active_item_index -= 1;
681 }
682 insertion_index = insertion_index.min(self.items.len());
683
684 self.items.insert(insertion_index, item.clone());
685
686 if existing_item_is_active {
687 self.active_item_index = insertion_index;
688 } else if insertion_index <= self.active_item_index {
689 self.active_item_index += 1;
690 }
691 }
692
693 cx.notify();
694 }
695
696 self.activate_item(insertion_index, activate_pane, focus_item, cx);
697 } else {
698 self.items.insert(insertion_index, item.clone());
699 if insertion_index <= self.active_item_index {
700 self.active_item_index += 1;
701 }
702
703 self.activate_item(insertion_index, activate_pane, focus_item, cx);
704 cx.notify();
705 }
706
707 cx.emit(Event::AddItem { item });
708 }
709
710 pub fn items_len(&self) -> usize {
711 self.items.len()
712 }
713
714 pub fn items(&self) -> impl Iterator<Item = &Box<dyn ItemHandle>> + DoubleEndedIterator {
715 self.items.iter()
716 }
717
718 pub fn items_of_type<T: Render>(&self) -> impl '_ + Iterator<Item = View<T>> {
719 self.items
720 .iter()
721 .filter_map(|item| item.to_any().downcast().ok())
722 }
723
724 pub fn active_item(&self) -> Option<Box<dyn ItemHandle>> {
725 self.items.get(self.active_item_index).cloned()
726 }
727
728 pub fn pixel_position_of_cursor(&self, cx: &AppContext) -> Option<Point<Pixels>> {
729 self.items
730 .get(self.active_item_index)?
731 .pixel_position_of_cursor(cx)
732 }
733
734 pub fn item_for_entry(
735 &self,
736 entry_id: ProjectEntryId,
737 cx: &AppContext,
738 ) -> Option<Box<dyn ItemHandle>> {
739 self.items.iter().find_map(|item| {
740 if item.is_singleton(cx) && item.project_entry_ids(cx).as_slice() == [entry_id] {
741 Some(item.boxed_clone())
742 } else {
743 None
744 }
745 })
746 }
747
748 pub fn index_for_item(&self, item: &dyn ItemHandle) -> Option<usize> {
749 self.items
750 .iter()
751 .position(|i| i.item_id() == item.item_id())
752 }
753
754 pub fn item_for_index(&self, ix: usize) -> Option<&dyn ItemHandle> {
755 self.items.get(ix).map(|i| i.as_ref())
756 }
757
758 pub fn toggle_zoom(&mut self, _: &ToggleZoom, cx: &mut ViewContext<Self>) {
759 if self.zoomed {
760 cx.emit(Event::ZoomOut);
761 } else if !self.items.is_empty() {
762 if !self.focus_handle.contains_focused(cx) {
763 cx.focus_self();
764 }
765 cx.emit(Event::ZoomIn);
766 }
767 }
768
769 pub fn activate_item(
770 &mut self,
771 index: usize,
772 activate_pane: bool,
773 focus_item: bool,
774 cx: &mut ViewContext<Self>,
775 ) {
776 use NavigationMode::{GoingBack, GoingForward};
777
778 if index < self.items.len() {
779 let prev_active_item_ix = mem::replace(&mut self.active_item_index, index);
780 if prev_active_item_ix != self.active_item_index
781 || matches!(self.nav_history.mode(), GoingBack | GoingForward)
782 {
783 if let Some(prev_item) = self.items.get(prev_active_item_ix) {
784 prev_item.deactivated(cx);
785 }
786
787 cx.emit(Event::ActivateItem {
788 local: activate_pane,
789 });
790 }
791
792 if let Some(newly_active_item) = self.items.get(index) {
793 self.activation_history
794 .retain(|&previously_active_item_id| {
795 previously_active_item_id != newly_active_item.item_id()
796 });
797 self.activation_history.push(newly_active_item.item_id());
798 }
799
800 self.update_toolbar(cx);
801 self.update_status_bar(cx);
802
803 if focus_item {
804 self.focus_active_item(cx);
805 }
806
807 self.tab_bar_scroll_handle.scroll_to_item(index);
808 cx.notify();
809 }
810 }
811
812 pub fn activate_prev_item(&mut self, activate_pane: bool, cx: &mut ViewContext<Self>) {
813 let mut index = self.active_item_index;
814 if index > 0 {
815 index -= 1;
816 } else if !self.items.is_empty() {
817 index = self.items.len() - 1;
818 }
819 self.activate_item(index, activate_pane, activate_pane, cx);
820 }
821
822 pub fn activate_next_item(&mut self, activate_pane: bool, cx: &mut ViewContext<Self>) {
823 let mut index = self.active_item_index;
824 if index + 1 < self.items.len() {
825 index += 1;
826 } else {
827 index = 0;
828 }
829 self.activate_item(index, activate_pane, activate_pane, cx);
830 }
831
832 pub fn close_active_item(
833 &mut self,
834 action: &CloseActiveItem,
835 cx: &mut ViewContext<Self>,
836 ) -> Option<Task<Result<()>>> {
837 if self.items.is_empty() {
838 return None;
839 }
840 let active_item_id = self.items[self.active_item_index].item_id();
841 Some(self.close_item_by_id(
842 active_item_id,
843 action.save_intent.unwrap_or(SaveIntent::Close),
844 cx,
845 ))
846 }
847
848 pub fn close_item_by_id(
849 &mut self,
850 item_id_to_close: EntityId,
851 save_intent: SaveIntent,
852 cx: &mut ViewContext<Self>,
853 ) -> Task<Result<()>> {
854 self.close_items(cx, save_intent, move |view_id| view_id == item_id_to_close)
855 }
856
857 pub fn close_inactive_items(
858 &mut self,
859 _: &CloseInactiveItems,
860 cx: &mut ViewContext<Self>,
861 ) -> Option<Task<Result<()>>> {
862 if self.items.is_empty() {
863 return None;
864 }
865
866 let active_item_id = self.items[self.active_item_index].item_id();
867 Some(self.close_items(cx, SaveIntent::Close, move |item_id| {
868 item_id != active_item_id
869 }))
870 }
871
872 pub fn close_clean_items(
873 &mut self,
874 _: &CloseCleanItems,
875 cx: &mut ViewContext<Self>,
876 ) -> Option<Task<Result<()>>> {
877 let item_ids: Vec<_> = self
878 .items()
879 .filter(|item| !item.is_dirty(cx))
880 .map(|item| item.item_id())
881 .collect();
882 Some(self.close_items(cx, SaveIntent::Close, move |item_id| {
883 item_ids.contains(&item_id)
884 }))
885 }
886
887 pub fn close_items_to_the_left(
888 &mut self,
889 _: &CloseItemsToTheLeft,
890 cx: &mut ViewContext<Self>,
891 ) -> Option<Task<Result<()>>> {
892 if self.items.is_empty() {
893 return None;
894 }
895 let active_item_id = self.items[self.active_item_index].item_id();
896 Some(self.close_items_to_the_left_by_id(active_item_id, cx))
897 }
898
899 pub fn close_items_to_the_left_by_id(
900 &mut self,
901 item_id: EntityId,
902 cx: &mut ViewContext<Self>,
903 ) -> Task<Result<()>> {
904 let item_ids: Vec<_> = self
905 .items()
906 .take_while(|item| item.item_id() != item_id)
907 .map(|item| item.item_id())
908 .collect();
909 self.close_items(cx, SaveIntent::Close, move |item_id| {
910 item_ids.contains(&item_id)
911 })
912 }
913
914 pub fn close_items_to_the_right(
915 &mut self,
916 _: &CloseItemsToTheRight,
917 cx: &mut ViewContext<Self>,
918 ) -> Option<Task<Result<()>>> {
919 if self.items.is_empty() {
920 return None;
921 }
922 let active_item_id = self.items[self.active_item_index].item_id();
923 Some(self.close_items_to_the_right_by_id(active_item_id, cx))
924 }
925
926 pub fn close_items_to_the_right_by_id(
927 &mut self,
928 item_id: EntityId,
929 cx: &mut ViewContext<Self>,
930 ) -> Task<Result<()>> {
931 let item_ids: Vec<_> = self
932 .items()
933 .rev()
934 .take_while(|item| item.item_id() != item_id)
935 .map(|item| item.item_id())
936 .collect();
937 self.close_items(cx, SaveIntent::Close, move |item_id| {
938 item_ids.contains(&item_id)
939 })
940 }
941
942 pub fn close_all_items(
943 &mut self,
944 action: &CloseAllItems,
945 cx: &mut ViewContext<Self>,
946 ) -> Option<Task<Result<()>>> {
947 if self.items.is_empty() {
948 return None;
949 }
950
951 Some(
952 self.close_items(cx, action.save_intent.unwrap_or(SaveIntent::Close), |_| {
953 true
954 }),
955 )
956 }
957
958 pub(super) fn file_names_for_prompt(
959 items: &mut dyn Iterator<Item = &Box<dyn ItemHandle>>,
960 all_dirty_items: usize,
961 cx: &AppContext,
962 ) -> String {
963 /// Quantity of item paths displayed in prompt prior to cutoff..
964 const FILE_NAMES_CUTOFF_POINT: usize = 10;
965 let mut file_names: Vec<_> = items
966 .filter_map(|item| {
967 item.project_path(cx).and_then(|project_path| {
968 project_path
969 .path
970 .file_name()
971 .and_then(|name| name.to_str().map(ToOwned::to_owned))
972 })
973 })
974 .take(FILE_NAMES_CUTOFF_POINT)
975 .collect();
976 let should_display_followup_text =
977 all_dirty_items > FILE_NAMES_CUTOFF_POINT || file_names.len() != all_dirty_items;
978 if should_display_followup_text {
979 let not_shown_files = all_dirty_items - file_names.len();
980 if not_shown_files == 1 {
981 file_names.push(".. 1 file not shown".into());
982 } else {
983 file_names.push(format!(".. {} files not shown", not_shown_files).into());
984 }
985 }
986 let file_names = file_names.join("\n");
987 format!(
988 "Do you want to save changes to the following {} files?\n{file_names}",
989 all_dirty_items
990 )
991 }
992
993 pub fn close_items(
994 &mut self,
995 cx: &mut ViewContext<Pane>,
996 mut save_intent: SaveIntent,
997 should_close: impl Fn(EntityId) -> bool,
998 ) -> Task<Result<()>> {
999 // Find the items to close.
1000 let mut items_to_close = Vec::new();
1001 let mut dirty_items = Vec::new();
1002 for item in &self.items {
1003 if should_close(item.item_id()) {
1004 items_to_close.push(item.boxed_clone());
1005 if item.is_dirty(cx) {
1006 dirty_items.push(item.boxed_clone());
1007 }
1008 }
1009 }
1010
1011 // If a buffer is open both in a singleton editor and in a multibuffer, make sure
1012 // to focus the singleton buffer when prompting to save that buffer, as opposed
1013 // to focusing the multibuffer, because this gives the user a more clear idea
1014 // of what content they would be saving.
1015 items_to_close.sort_by_key(|item| !item.is_singleton(cx));
1016
1017 let workspace = self.workspace.clone();
1018 cx.spawn(|pane, mut cx| async move {
1019 if save_intent == SaveIntent::Close && dirty_items.len() > 1 {
1020 let answer = pane.update(&mut cx, |_, cx| {
1021 let prompt =
1022 Self::file_names_for_prompt(&mut dirty_items.iter(), dirty_items.len(), cx);
1023 cx.prompt(
1024 PromptLevel::Warning,
1025 &prompt,
1026 &["Save all", "Discard all", "Cancel"],
1027 )
1028 })?;
1029 match answer.await {
1030 Ok(0) => save_intent = SaveIntent::SaveAll,
1031 Ok(1) => save_intent = SaveIntent::Skip,
1032 _ => {}
1033 }
1034 }
1035 let mut saved_project_items_ids = HashSet::default();
1036 for item in items_to_close.clone() {
1037 // Find the item's current index and its set of project item models. Avoid
1038 // storing these in advance, in case they have changed since this task
1039 // was started.
1040 let (item_ix, mut project_item_ids) = pane.update(&mut cx, |pane, cx| {
1041 (pane.index_for_item(&*item), item.project_item_model_ids(cx))
1042 })?;
1043 let item_ix = if let Some(ix) = item_ix {
1044 ix
1045 } else {
1046 continue;
1047 };
1048
1049 // Check if this view has any project items that are not open anywhere else
1050 // in the workspace, AND that the user has not already been prompted to save.
1051 // If there are any such project entries, prompt the user to save this item.
1052 let project = workspace.update(&mut cx, |workspace, cx| {
1053 for item in workspace.items(cx) {
1054 if !items_to_close
1055 .iter()
1056 .any(|item_to_close| item_to_close.item_id() == item.item_id())
1057 {
1058 let other_project_item_ids = item.project_item_model_ids(cx);
1059 project_item_ids.retain(|id| !other_project_item_ids.contains(id));
1060 }
1061 }
1062 workspace.project().clone()
1063 })?;
1064 let should_save = project_item_ids
1065 .iter()
1066 .any(|id| saved_project_items_ids.insert(*id));
1067
1068 if should_save
1069 && !Self::save_item(
1070 project.clone(),
1071 &pane,
1072 item_ix,
1073 &*item,
1074 save_intent,
1075 &mut cx,
1076 )
1077 .await?
1078 {
1079 break;
1080 }
1081
1082 // Remove the item from the pane.
1083 pane.update(&mut cx, |pane, cx| {
1084 if let Some(item_ix) = pane
1085 .items
1086 .iter()
1087 .position(|i| i.item_id() == item.item_id())
1088 {
1089 pane.remove_item(item_ix, false, cx);
1090 }
1091 })
1092 .ok();
1093 }
1094
1095 pane.update(&mut cx, |_, cx| cx.notify()).ok();
1096 Ok(())
1097 })
1098 }
1099
1100 pub fn remove_item(
1101 &mut self,
1102 item_index: usize,
1103 activate_pane: bool,
1104 cx: &mut ViewContext<Self>,
1105 ) {
1106 self.activation_history
1107 .retain(|&history_entry| history_entry != self.items[item_index].item_id());
1108
1109 if item_index == self.active_item_index {
1110 let index_to_activate = self
1111 .activation_history
1112 .pop()
1113 .and_then(|last_activated_item| {
1114 self.items.iter().enumerate().find_map(|(index, item)| {
1115 (item.item_id() == last_activated_item).then_some(index)
1116 })
1117 })
1118 // We didn't have a valid activation history entry, so fallback
1119 // to activating the item to the left
1120 .unwrap_or_else(|| item_index.min(self.items.len()).saturating_sub(1));
1121
1122 let should_activate = activate_pane || self.has_focus(cx);
1123 if self.items.len() == 1 && should_activate {
1124 self.focus_handle.focus(cx);
1125 } else {
1126 self.activate_item(index_to_activate, should_activate, should_activate, cx);
1127 }
1128 }
1129
1130 let item = self.items.remove(item_index);
1131
1132 cx.emit(Event::RemoveItem {
1133 item_id: item.item_id(),
1134 });
1135 if self.items.is_empty() {
1136 item.deactivated(cx);
1137 self.update_toolbar(cx);
1138 cx.emit(Event::Remove);
1139 }
1140
1141 if item_index < self.active_item_index {
1142 self.active_item_index -= 1;
1143 }
1144
1145 self.nav_history.set_mode(NavigationMode::ClosingItem);
1146 item.deactivated(cx);
1147 self.nav_history.set_mode(NavigationMode::Normal);
1148
1149 if let Some(path) = item.project_path(cx) {
1150 let abs_path = self
1151 .nav_history
1152 .0
1153 .lock()
1154 .paths_by_item
1155 .get(&item.item_id())
1156 .and_then(|(_, abs_path)| abs_path.clone());
1157
1158 self.nav_history
1159 .0
1160 .lock()
1161 .paths_by_item
1162 .insert(item.item_id(), (path, abs_path));
1163 } else {
1164 self.nav_history
1165 .0
1166 .lock()
1167 .paths_by_item
1168 .remove(&item.item_id());
1169 }
1170
1171 if self.items.is_empty() && self.zoomed {
1172 cx.emit(Event::ZoomOut);
1173 }
1174
1175 cx.notify();
1176 }
1177
1178 pub async fn save_item(
1179 project: Model<Project>,
1180 pane: &WeakView<Pane>,
1181 item_ix: usize,
1182 item: &dyn ItemHandle,
1183 save_intent: SaveIntent,
1184 cx: &mut AsyncWindowContext,
1185 ) -> Result<bool> {
1186 const CONFLICT_MESSAGE: &str =
1187 "This file has changed on disk since you started editing it. Do you want to overwrite it?";
1188
1189 if save_intent == SaveIntent::Skip {
1190 return Ok(true);
1191 }
1192
1193 let (mut has_conflict, mut is_dirty, mut can_save, can_save_as) = cx.update(|_, cx| {
1194 (
1195 item.has_conflict(cx),
1196 item.is_dirty(cx),
1197 item.can_save(cx),
1198 item.is_singleton(cx),
1199 )
1200 })?;
1201
1202 // when saving a single buffer, we ignore whether or not it's dirty.
1203 if save_intent == SaveIntent::Save {
1204 is_dirty = true;
1205 }
1206
1207 if save_intent == SaveIntent::SaveAs {
1208 is_dirty = true;
1209 has_conflict = false;
1210 can_save = false;
1211 }
1212
1213 if save_intent == SaveIntent::Overwrite {
1214 has_conflict = false;
1215 }
1216
1217 if has_conflict && can_save {
1218 let answer = pane.update(cx, |pane, cx| {
1219 pane.activate_item(item_ix, true, true, cx);
1220 cx.prompt(
1221 PromptLevel::Warning,
1222 CONFLICT_MESSAGE,
1223 &["Overwrite", "Discard", "Cancel"],
1224 )
1225 })?;
1226 match answer.await {
1227 Ok(0) => pane.update(cx, |_, cx| item.save(project, cx))?.await?,
1228 Ok(1) => pane.update(cx, |_, cx| item.reload(project, cx))?.await?,
1229 _ => return Ok(false),
1230 }
1231 } else if is_dirty && (can_save || can_save_as) {
1232 if save_intent == SaveIntent::Close {
1233 let will_autosave = cx.update(|_, cx| {
1234 matches!(
1235 WorkspaceSettings::get_global(cx).autosave,
1236 AutosaveSetting::OnFocusChange | AutosaveSetting::OnWindowChange
1237 ) && Self::can_autosave_item(&*item, cx)
1238 })?;
1239 if !will_autosave {
1240 let answer = pane.update(cx, |pane, cx| {
1241 pane.activate_item(item_ix, true, true, cx);
1242 let prompt = dirty_message_for(item.project_path(cx));
1243 cx.prompt(
1244 PromptLevel::Warning,
1245 &prompt,
1246 &["Save", "Don't Save", "Cancel"],
1247 )
1248 })?;
1249 match answer.await {
1250 Ok(0) => {}
1251 Ok(1) => return Ok(true), // Don't save this file
1252 _ => return Ok(false), // Cancel
1253 }
1254 }
1255 }
1256
1257 if can_save {
1258 pane.update(cx, |_, cx| item.save(project, cx))?.await?;
1259 } else if can_save_as {
1260 let start_abs_path = project
1261 .update(cx, |project, cx| {
1262 let worktree = project.visible_worktrees(cx).next()?;
1263 Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
1264 })?
1265 .unwrap_or_else(|| Path::new("").into());
1266
1267 let abs_path = cx.update(|_, cx| cx.prompt_for_new_path(&start_abs_path))?;
1268 if let Some(abs_path) = abs_path.await.ok().flatten() {
1269 pane.update(cx, |_, cx| item.save_as(project, abs_path, cx))?
1270 .await?;
1271 } else {
1272 return Ok(false);
1273 }
1274 }
1275 }
1276 Ok(true)
1277 }
1278
1279 fn can_autosave_item(item: &dyn ItemHandle, cx: &AppContext) -> bool {
1280 let is_deleted = item.project_entry_ids(cx).is_empty();
1281 item.is_dirty(cx) && !item.has_conflict(cx) && item.can_save(cx) && !is_deleted
1282 }
1283
1284 pub fn autosave_item(
1285 item: &dyn ItemHandle,
1286 project: Model<Project>,
1287 cx: &mut WindowContext,
1288 ) -> Task<Result<()>> {
1289 if Self::can_autosave_item(item, cx) {
1290 item.save(project, cx)
1291 } else {
1292 Task::ready(Ok(()))
1293 }
1294 }
1295
1296 pub fn focus(&mut self, cx: &mut ViewContext<Pane>) {
1297 cx.focus(&self.focus_handle);
1298 }
1299
1300 pub fn focus_active_item(&mut self, cx: &mut ViewContext<Self>) {
1301 if let Some(active_item) = self.active_item() {
1302 let focus_handle = active_item.focus_handle(cx);
1303 cx.focus(&focus_handle);
1304 }
1305 }
1306
1307 pub fn split(&mut self, direction: SplitDirection, cx: &mut ViewContext<Self>) {
1308 cx.emit(Event::Split(direction));
1309 }
1310
1311 // fn deploy_split_menu(&mut self, cx: &mut ViewContext<Self>) {
1312 // self.tab_bar_context_menu.handle.update(cx, |menu, cx| {
1313 // menu.toggle(
1314 // Default::default(),
1315 // AnchorCorner::TopRight,
1316 // vec![
1317 // ContextMenuItem::action("Split Right", SplitRight),
1318 // ContextMenuItem::action("Split Left", SplitLeft),
1319 // ContextMenuItem::action("Split Up", SplitUp),
1320 // ContextMenuItem::action("Split Down", SplitDown),
1321 // ],
1322 // cx,
1323 // );
1324 // });
1325
1326 // self.tab_bar_context_menu.kind = TabBarContextMenuKind::Split;
1327 // }
1328
1329 // fn deploy_new_menu(&mut self, cx: &mut ViewContext<Self>) {
1330 // self.tab_bar_context_menu.handle.update(cx, |menu, cx| {
1331 // menu.toggle(
1332 // Default::default(),
1333 // AnchorCorner::TopRight,
1334 // vec![
1335 // ContextMenuItem::action("New File", NewFile),
1336 // ContextMenuItem::action("New Terminal", NewCenterTerminal),
1337 // ContextMenuItem::action("New Search", NewSearch),
1338 // ],
1339 // cx,
1340 // );
1341 // });
1342
1343 // self.tab_bar_context_menu.kind = TabBarContextMenuKind::New;
1344 // }
1345
1346 // fn deploy_tab_context_menu(
1347 // &mut self,
1348 // position: Vector2F,
1349 // target_item_id: usize,
1350 // cx: &mut ViewContext<Self>,
1351 // ) {
1352 // let active_item_id = self.items[self.active_item_index].id();
1353 // let is_active_item = target_item_id == active_item_id;
1354 // let target_pane = cx.weak_handle();
1355
1356 // // The `CloseInactiveItems` action should really be called "CloseOthers" and the behaviour should be dynamically based on the tab the action is ran on. Currently, this is a weird action because you can run it on a non-active tab and it will close everything by the actual active tab
1357
1358 // self.tab_context_menu.update(cx, |menu, cx| {
1359 // menu.show(
1360 // position,
1361 // AnchorCorner::TopLeft,
1362 // if is_active_item {
1363 // vec![
1364 // ContextMenuItem::action(
1365 // "Close Active Item",
1366 // CloseActiveItem { save_intent: None },
1367 // ),
1368 // ContextMenuItem::action("Close Inactive Items", CloseInactiveItems),
1369 // ContextMenuItem::action("Close Clean Items", CloseCleanItems),
1370 // ContextMenuItem::action("Close Items To The Left", CloseItemsToTheLeft),
1371 // ContextMenuItem::action("Close Items To The Right", CloseItemsToTheRight),
1372 // ContextMenuItem::action(
1373 // "Close All Items",
1374 // CloseAllItems { save_intent: None },
1375 // ),
1376 // ]
1377 // } else {
1378 // // In the case of the user right clicking on a non-active tab, for some item-closing commands, we need to provide the id of the tab, for the others, we can reuse the existing command.
1379 // vec![
1380 // ContextMenuItem::handler("Close Inactive Item", {
1381 // let pane = target_pane.clone();
1382 // move |cx| {
1383 // if let Some(pane) = pane.upgrade(cx) {
1384 // pane.update(cx, |pane, cx| {
1385 // pane.close_item_by_id(
1386 // target_item_id,
1387 // SaveIntent::Close,
1388 // cx,
1389 // )
1390 // .detach_and_log_err(cx);
1391 // })
1392 // }
1393 // }
1394 // }),
1395 // ContextMenuItem::action("Close Inactive Items", CloseInactiveItems),
1396 // ContextMenuItem::action("Close Clean Items", CloseCleanItems),
1397 // ContextMenuItem::handler("Close Items To The Left", {
1398 // let pane = target_pane.clone();
1399 // move |cx| {
1400 // if let Some(pane) = pane.upgrade(cx) {
1401 // pane.update(cx, |pane, cx| {
1402 // pane.close_items_to_the_left_by_id(target_item_id, cx)
1403 // .detach_and_log_err(cx);
1404 // })
1405 // }
1406 // }
1407 // }),
1408 // ContextMenuItem::handler("Close Items To The Right", {
1409 // let pane = target_pane.clone();
1410 // move |cx| {
1411 // if let Some(pane) = pane.upgrade(cx) {
1412 // pane.update(cx, |pane, cx| {
1413 // pane.close_items_to_the_right_by_id(target_item_id, cx)
1414 // .detach_and_log_err(cx);
1415 // })
1416 // }
1417 // }
1418 // }),
1419 // ContextMenuItem::action(
1420 // "Close All Items",
1421 // CloseAllItems { save_intent: None },
1422 // ),
1423 // ]
1424 // },
1425 // cx,
1426 // );
1427 // });
1428 // }
1429
1430 pub fn toolbar(&self) -> &View<Toolbar> {
1431 &self.toolbar
1432 }
1433
1434 pub fn handle_deleted_project_item(
1435 &mut self,
1436 entry_id: ProjectEntryId,
1437 cx: &mut ViewContext<Pane>,
1438 ) -> Option<()> {
1439 let (item_index_to_delete, item_id) = self.items().enumerate().find_map(|(i, item)| {
1440 if item.is_singleton(cx) && item.project_entry_ids(cx).as_slice() == [entry_id] {
1441 Some((i, item.item_id()))
1442 } else {
1443 None
1444 }
1445 })?;
1446
1447 self.remove_item(item_index_to_delete, false, cx);
1448 self.nav_history.remove_item(item_id);
1449
1450 Some(())
1451 }
1452
1453 fn update_toolbar(&mut self, cx: &mut ViewContext<Self>) {
1454 let active_item = self
1455 .items
1456 .get(self.active_item_index)
1457 .map(|item| item.as_ref());
1458 self.toolbar.update(cx, |toolbar, cx| {
1459 toolbar.set_active_item(active_item, cx);
1460 });
1461 }
1462
1463 fn update_status_bar(&mut self, cx: &mut ViewContext<Self>) {
1464 let workspace = self.workspace.clone();
1465 let pane = cx.view().clone();
1466
1467 cx.window_context().defer(move |cx| {
1468 let Ok(status_bar) = workspace.update(cx, |workspace, _| workspace.status_bar.clone())
1469 else {
1470 return;
1471 };
1472
1473 status_bar.update(cx, move |status_bar, cx| {
1474 status_bar.set_active_pane(&pane, cx);
1475 });
1476 });
1477 }
1478
1479 fn render_tab(
1480 &self,
1481 ix: usize,
1482 item: &Box<dyn ItemHandle>,
1483 detail: usize,
1484 cx: &mut ViewContext<'_, Pane>,
1485 ) -> impl IntoElement {
1486 let is_active = ix == self.active_item_index;
1487
1488 let label = item.tab_content(Some(detail), is_active, cx);
1489 let close_side = &ItemSettings::get_global(cx).close_position;
1490
1491 let indicator = maybe!({
1492 let indicator_color = match (item.has_conflict(cx), item.is_dirty(cx)) {
1493 (true, _) => Color::Warning,
1494 (_, true) => Color::Accent,
1495 (false, false) => return None,
1496 };
1497
1498 Some(Indicator::dot().color(indicator_color))
1499 });
1500
1501 let item_id = item.item_id();
1502 let is_first_item = ix == 0;
1503 let is_last_item = ix == self.items.len() - 1;
1504 let position_relative_to_active_item = ix.cmp(&self.active_item_index);
1505
1506 let tab = Tab::new(ix)
1507 .position(if is_first_item {
1508 TabPosition::First
1509 } else if is_last_item {
1510 TabPosition::Last
1511 } else {
1512 TabPosition::Middle(position_relative_to_active_item)
1513 })
1514 .close_side(match close_side {
1515 ClosePosition::Left => ui::TabCloseSide::Start,
1516 ClosePosition::Right => ui::TabCloseSide::End,
1517 })
1518 .selected(is_active)
1519 .on_click(
1520 cx.listener(move |pane: &mut Self, _, cx| pane.activate_item(ix, true, true, cx)),
1521 )
1522 // TODO: This should be a click listener with the middle mouse button instead of a mouse down listener.
1523 .on_mouse_down(
1524 MouseButton::Middle,
1525 cx.listener(move |pane, _event, cx| {
1526 pane.close_item_by_id(item_id, SaveIntent::Close, cx)
1527 .detach_and_log_err(cx);
1528 }),
1529 )
1530 .on_drag(
1531 DraggedTab {
1532 pane: cx.view().clone(),
1533 detail,
1534 item_id,
1535 is_active,
1536 ix,
1537 },
1538 |tab, cx| cx.build_view(|_| tab.clone()),
1539 )
1540 .drag_over::<DraggedTab>(|tab| tab.bg(cx.theme().colors().drop_target_background))
1541 .drag_over::<ProjectEntryId>(|tab| tab.bg(cx.theme().colors().drop_target_background))
1542 .when_some(self.can_drop_predicate.clone(), |this, p| {
1543 this.can_drop(move |a, cx| p(a, cx))
1544 })
1545 .on_drop(cx.listener(move |this, dragged_tab: &DraggedTab, cx| {
1546 this.drag_split_direction = None;
1547 this.handle_tab_drop(dragged_tab, ix, cx)
1548 }))
1549 .on_drop(cx.listener(move |this, entry_id: &ProjectEntryId, cx| {
1550 this.drag_split_direction = None;
1551 this.handle_project_entry_drop(entry_id, cx)
1552 }))
1553 .when_some(item.tab_tooltip_text(cx), |tab, text| {
1554 tab.tooltip(move |cx| Tooltip::text(text.clone(), cx))
1555 })
1556 .start_slot::<Indicator>(indicator)
1557 .end_slot(
1558 IconButton::new("close tab", Icon::Close)
1559 .icon_color(Color::Muted)
1560 .size(ButtonSize::None)
1561 .icon_size(IconSize::XSmall)
1562 .on_click(cx.listener(move |pane, _, cx| {
1563 pane.close_item_by_id(item_id, SaveIntent::Close, cx)
1564 .detach_and_log_err(cx);
1565 })),
1566 )
1567 .child(label);
1568
1569 let single_entry_to_resolve = {
1570 let item_entries = self.items[ix].project_entry_ids(cx);
1571 if item_entries.len() == 1 {
1572 Some(item_entries[0])
1573 } else {
1574 None
1575 }
1576 };
1577
1578 let pane = cx.view().downgrade();
1579 right_click_menu(ix).trigger(tab).menu(move |cx| {
1580 let pane = pane.clone();
1581 ContextMenu::build(cx, move |mut menu, cx| {
1582 if let Some(pane) = pane.upgrade() {
1583 menu = menu
1584 .entry(
1585 "Close",
1586 Some(Box::new(CloseActiveItem { save_intent: None })),
1587 cx.handler_for(&pane, move |pane, cx| {
1588 pane.close_item_by_id(item_id, SaveIntent::Close, cx)
1589 .detach_and_log_err(cx);
1590 }),
1591 )
1592 .entry(
1593 "Close Others",
1594 Some(Box::new(CloseInactiveItems)),
1595 cx.handler_for(&pane, move |pane, cx| {
1596 pane.close_items(cx, SaveIntent::Close, |id| id != item_id)
1597 .detach_and_log_err(cx);
1598 }),
1599 )
1600 .separator()
1601 .entry(
1602 "Close Left",
1603 Some(Box::new(CloseItemsToTheLeft)),
1604 cx.handler_for(&pane, move |pane, cx| {
1605 pane.close_items_to_the_left_by_id(item_id, cx)
1606 .detach_and_log_err(cx);
1607 }),
1608 )
1609 .entry(
1610 "Close Right",
1611 Some(Box::new(CloseItemsToTheRight)),
1612 cx.handler_for(&pane, move |pane, cx| {
1613 pane.close_items_to_the_right_by_id(item_id, cx)
1614 .detach_and_log_err(cx);
1615 }),
1616 )
1617 .separator()
1618 .entry(
1619 "Close Clean",
1620 Some(Box::new(CloseCleanItems)),
1621 cx.handler_for(&pane, move |pane, cx| {
1622 pane.close_clean_items(&CloseCleanItems, cx)
1623 .map(|task| task.detach_and_log_err(cx));
1624 }),
1625 )
1626 .entry(
1627 "Close All",
1628 Some(Box::new(CloseAllItems { save_intent: None })),
1629 cx.handler_for(&pane, |pane, cx| {
1630 pane.close_all_items(&CloseAllItems { save_intent: None }, cx)
1631 .map(|task| task.detach_and_log_err(cx));
1632 }),
1633 );
1634
1635 if let Some(entry) = single_entry_to_resolve {
1636 let entry_id = entry.to_proto();
1637 menu = menu.separator().entry(
1638 "Reveal In Project Panel",
1639 Some(Box::new(RevealInProjectPanel { entry_id })),
1640 cx.handler_for(&pane, move |pane, cx| {
1641 pane.project.update(cx, |_, cx| {
1642 cx.emit(project::Event::RevealInProjectPanel(
1643 ProjectEntryId::from_proto(entry_id),
1644 ))
1645 });
1646 }),
1647 );
1648 }
1649 }
1650
1651 menu
1652 })
1653 })
1654 }
1655
1656 fn render_tab_bar(&mut self, cx: &mut ViewContext<'_, Pane>) -> impl IntoElement {
1657 TabBar::new("tab_bar")
1658 .track_scroll(self.tab_bar_scroll_handle.clone())
1659 .start_child(
1660 IconButton::new("navigate_backward", Icon::ArrowLeft)
1661 .icon_size(IconSize::Small)
1662 .on_click({
1663 let view = cx.view().clone();
1664 move |_, cx| view.update(cx, Self::navigate_backward)
1665 })
1666 .disabled(!self.can_navigate_backward())
1667 .tooltip(|cx| Tooltip::for_action("Go Back", &GoBack, cx)),
1668 )
1669 .start_child(
1670 IconButton::new("navigate_forward", Icon::ArrowRight)
1671 .icon_size(IconSize::Small)
1672 .on_click({
1673 let view = cx.view().clone();
1674 move |_, cx| view.update(cx, Self::navigate_backward)
1675 })
1676 .disabled(!self.can_navigate_forward())
1677 .tooltip(|cx| Tooltip::for_action("Go Forward", &GoForward, cx)),
1678 )
1679 .end_child({
1680 let render_tab_buttons = self.render_tab_bar_buttons.clone();
1681 render_tab_buttons(self, cx)
1682 })
1683 .children(
1684 self.items
1685 .iter()
1686 .enumerate()
1687 .zip(self.tab_details(cx))
1688 .map(|((ix, item), detail)| self.render_tab(ix, item, detail, cx)),
1689 )
1690 .child(
1691 div()
1692 .min_w_6()
1693 // HACK: This empty child is currently necessary to force the drop traget to appear
1694 // despite us setting a min width above.
1695 .child("")
1696 .h_full()
1697 .flex_grow()
1698 .drag_over::<DraggedTab>(|bar| {
1699 bar.bg(cx.theme().colors().drop_target_background)
1700 })
1701 .drag_over::<ProjectEntryId>(|bar| {
1702 bar.bg(cx.theme().colors().drop_target_background)
1703 })
1704 .on_drop(cx.listener(move |this, dragged_tab: &DraggedTab, cx| {
1705 this.drag_split_direction = None;
1706 this.handle_tab_drop(dragged_tab, this.items.len(), cx)
1707 }))
1708 .on_drop(cx.listener(move |this, entry_id: &ProjectEntryId, cx| {
1709 this.drag_split_direction = None;
1710 this.handle_project_entry_drop(entry_id, cx)
1711 })),
1712 )
1713 }
1714
1715 fn render_menu_overlay(menu: &View<ContextMenu>) -> Div {
1716 div()
1717 .absolute()
1718 .z_index(1)
1719 .bottom_0()
1720 .right_0()
1721 .size_0()
1722 .child(overlay().anchor(AnchorCorner::TopRight).child(menu.clone()))
1723 }
1724
1725 fn tab_details(&self, cx: &AppContext) -> Vec<usize> {
1726 let mut tab_details = self.items.iter().map(|_| 0).collect::<Vec<_>>();
1727
1728 let mut tab_descriptions = HashMap::default();
1729 let mut done = false;
1730 while !done {
1731 done = true;
1732
1733 // Store item indices by their tab description.
1734 for (ix, (item, detail)) in self.items.iter().zip(&tab_details).enumerate() {
1735 if let Some(description) = item.tab_description(*detail, cx) {
1736 if *detail == 0
1737 || Some(&description) != item.tab_description(detail - 1, cx).as_ref()
1738 {
1739 tab_descriptions
1740 .entry(description)
1741 .or_insert(Vec::new())
1742 .push(ix);
1743 }
1744 }
1745 }
1746
1747 // If two or more items have the same tab description, increase eir level
1748 // of detail and try again.
1749 for (_, item_ixs) in tab_descriptions.drain() {
1750 if item_ixs.len() > 1 {
1751 done = false;
1752 for ix in item_ixs {
1753 tab_details[ix] += 1;
1754 }
1755 }
1756 }
1757 }
1758
1759 tab_details
1760 }
1761
1762 pub fn set_zoomed(&mut self, zoomed: bool, cx: &mut ViewContext<Self>) {
1763 self.zoomed = zoomed;
1764 cx.notify();
1765 }
1766
1767 pub fn is_zoomed(&self) -> bool {
1768 self.zoomed
1769 }
1770
1771 fn handle_drag_move<T>(&mut self, event: &DragMoveEvent<T>, cx: &mut ViewContext<Self>) {
1772 if !self.can_split {
1773 return;
1774 }
1775
1776 let edge_width = cx.rem_size() * 8;
1777 let cursor = event.event.position;
1778 let direction = if cursor.x < event.bounds.left() + edge_width {
1779 Some(SplitDirection::Left)
1780 } else if cursor.x > event.bounds.right() - edge_width {
1781 Some(SplitDirection::Right)
1782 } else if cursor.y < event.bounds.top() + edge_width {
1783 Some(SplitDirection::Up)
1784 } else if cursor.y > event.bounds.bottom() - edge_width {
1785 Some(SplitDirection::Down)
1786 } else {
1787 None
1788 };
1789
1790 if direction != self.drag_split_direction {
1791 self.drag_split_direction = direction;
1792 }
1793 }
1794
1795 fn handle_tab_drop(
1796 &mut self,
1797 dragged_tab: &DraggedTab,
1798 ix: usize,
1799 cx: &mut ViewContext<'_, Pane>,
1800 ) {
1801 let mut to_pane = cx.view().clone();
1802 let split_direction = self.drag_split_direction;
1803 let item_id = dragged_tab.item_id;
1804 let from_pane = dragged_tab.pane.clone();
1805 self.workspace
1806 .update(cx, |_, cx| {
1807 cx.defer(move |workspace, cx| {
1808 if let Some(split_direction) = split_direction {
1809 to_pane = workspace.split_pane(to_pane, split_direction, cx);
1810 }
1811 workspace.move_item(from_pane, to_pane, item_id, ix, cx);
1812 });
1813 })
1814 .log_err();
1815 }
1816
1817 fn handle_project_entry_drop(
1818 &mut self,
1819 project_entry_id: &ProjectEntryId,
1820 cx: &mut ViewContext<'_, Pane>,
1821 ) {
1822 let mut to_pane = cx.view().clone();
1823 let split_direction = self.drag_split_direction;
1824 let project_entry_id = *project_entry_id;
1825 self.workspace
1826 .update(cx, |_, cx| {
1827 cx.defer(move |workspace, cx| {
1828 if let Some(path) = workspace
1829 .project()
1830 .read(cx)
1831 .path_for_entry(project_entry_id, cx)
1832 {
1833 if let Some(split_direction) = split_direction {
1834 to_pane = workspace.split_pane(to_pane, split_direction, cx);
1835 }
1836 workspace
1837 .open_path(path, Some(to_pane.downgrade()), true, cx)
1838 .detach_and_log_err(cx);
1839 }
1840 });
1841 })
1842 .log_err();
1843 }
1844}
1845
1846impl FocusableView for Pane {
1847 fn focus_handle(&self, _cx: &AppContext) -> FocusHandle {
1848 self.focus_handle.clone()
1849 }
1850}
1851
1852impl Render for Pane {
1853 type Element = Focusable<Div>;
1854
1855 fn render(&mut self, cx: &mut ViewContext<Self>) -> Self::Element {
1856 v_stack()
1857 .key_context("Pane")
1858 .track_focus(&self.focus_handle)
1859 .size_full()
1860 .flex_none()
1861 .overflow_hidden()
1862 .on_action(cx.listener(|pane, _: &SplitLeft, cx| pane.split(SplitDirection::Left, cx)))
1863 .on_action(cx.listener(|pane, _: &SplitUp, cx| pane.split(SplitDirection::Up, cx)))
1864 .on_action(
1865 cx.listener(|pane, _: &SplitRight, cx| pane.split(SplitDirection::Right, cx)),
1866 )
1867 .on_action(cx.listener(|pane, _: &SplitDown, cx| pane.split(SplitDirection::Down, cx)))
1868 .on_action(cx.listener(|pane, _: &GoBack, cx| pane.navigate_backward(cx)))
1869 .on_action(cx.listener(|pane, _: &GoForward, cx| pane.navigate_forward(cx)))
1870 .on_action(cx.listener(Pane::toggle_zoom))
1871 .on_action(cx.listener(|pane: &mut Pane, action: &ActivateItem, cx| {
1872 pane.activate_item(action.0, true, true, cx);
1873 }))
1874 .on_action(cx.listener(|pane: &mut Pane, _: &ActivateLastItem, cx| {
1875 pane.activate_item(pane.items.len() - 1, true, true, cx);
1876 }))
1877 .on_action(cx.listener(|pane: &mut Pane, _: &ActivatePrevItem, cx| {
1878 pane.activate_prev_item(true, cx);
1879 }))
1880 .on_action(cx.listener(|pane: &mut Pane, _: &ActivateNextItem, cx| {
1881 pane.activate_next_item(true, cx);
1882 }))
1883 .on_action(
1884 cx.listener(|pane: &mut Self, action: &CloseActiveItem, cx| {
1885 pane.close_active_item(action, cx)
1886 .map(|task| task.detach_and_log_err(cx));
1887 }),
1888 )
1889 .on_action(
1890 cx.listener(|pane: &mut Self, action: &CloseInactiveItems, cx| {
1891 pane.close_inactive_items(action, cx)
1892 .map(|task| task.detach_and_log_err(cx));
1893 }),
1894 )
1895 .on_action(
1896 cx.listener(|pane: &mut Self, action: &CloseCleanItems, cx| {
1897 pane.close_clean_items(action, cx)
1898 .map(|task| task.detach_and_log_err(cx));
1899 }),
1900 )
1901 .on_action(
1902 cx.listener(|pane: &mut Self, action: &CloseItemsToTheLeft, cx| {
1903 pane.close_items_to_the_left(action, cx)
1904 .map(|task| task.detach_and_log_err(cx));
1905 }),
1906 )
1907 .on_action(
1908 cx.listener(|pane: &mut Self, action: &CloseItemsToTheRight, cx| {
1909 pane.close_items_to_the_right(action, cx)
1910 .map(|task| task.detach_and_log_err(cx));
1911 }),
1912 )
1913 .on_action(cx.listener(|pane: &mut Self, action: &CloseAllItems, cx| {
1914 pane.close_all_items(action, cx)
1915 .map(|task| task.detach_and_log_err(cx));
1916 }))
1917 .on_action(
1918 cx.listener(|pane: &mut Self, action: &CloseActiveItem, cx| {
1919 pane.close_active_item(action, cx)
1920 .map(|task| task.detach_and_log_err(cx));
1921 }),
1922 )
1923 .on_action(
1924 cx.listener(|pane: &mut Self, action: &RevealInProjectPanel, cx| {
1925 pane.project.update(cx, |_, cx| {
1926 cx.emit(project::Event::RevealInProjectPanel(
1927 ProjectEntryId::from_proto(action.entry_id),
1928 ))
1929 })
1930 }),
1931 )
1932 .child(self.render_tab_bar(cx))
1933 .child({
1934 let has_worktrees = self.project.read(cx).worktrees().next().is_some();
1935 // main content
1936 div()
1937 .flex_1()
1938 .relative()
1939 .group("")
1940 .on_drag_move::<DraggedTab>(cx.listener(Self::handle_drag_move))
1941 .on_drag_move::<ProjectEntryId>(cx.listener(Self::handle_drag_move))
1942 .map(|div| {
1943 if let Some(item) = self.active_item() {
1944 div.v_flex()
1945 .child(self.toolbar.clone())
1946 .child(item.to_any())
1947 } else {
1948 let placeholder = div.h_flex().size_full().justify_center();
1949 if has_worktrees {
1950 placeholder
1951 } else {
1952 placeholder.child(
1953 Label::new("Open a file or project to get started.")
1954 .color(Color::Muted),
1955 )
1956 }
1957 }
1958 })
1959 .child(
1960 // drag target
1961 div()
1962 .z_index(1)
1963 .invisible()
1964 .absolute()
1965 .bg(theme::color_alpha(
1966 cx.theme().colors().drop_target_background,
1967 0.75,
1968 ))
1969 .group_drag_over::<DraggedTab>("", |style| style.visible())
1970 .group_drag_over::<ProjectEntryId>("", |style| style.visible())
1971 .when_some(self.can_drop_predicate.clone(), |this, p| {
1972 this.can_drop(move |a, cx| p(a, cx))
1973 })
1974 .on_drop(cx.listener(move |this, dragged_tab, cx| {
1975 this.handle_tab_drop(dragged_tab, this.active_item_index(), cx)
1976 }))
1977 .on_drop(cx.listener(move |this, entry_id, cx| {
1978 this.handle_project_entry_drop(entry_id, cx)
1979 }))
1980 .map(|div| match self.drag_split_direction {
1981 None => div.top_0().left_0().right_0().bottom_0(),
1982 Some(SplitDirection::Up) => div.top_0().left_0().right_0().h_32(),
1983 Some(SplitDirection::Down) => {
1984 div.left_0().bottom_0().right_0().h_32()
1985 }
1986 Some(SplitDirection::Left) => {
1987 div.top_0().left_0().bottom_0().w_32()
1988 }
1989 Some(SplitDirection::Right) => {
1990 div.top_0().bottom_0().right_0().w_32()
1991 }
1992 }),
1993 )
1994 })
1995 .on_mouse_down(
1996 MouseButton::Navigate(NavigationDirection::Back),
1997 cx.listener(|pane, _, cx| {
1998 if let Some(workspace) = pane.workspace.upgrade() {
1999 let pane = cx.view().downgrade();
2000 cx.window_context().defer(move |cx| {
2001 workspace.update(cx, |workspace, cx| {
2002 workspace.go_back(pane, cx).detach_and_log_err(cx)
2003 })
2004 })
2005 }
2006 }),
2007 )
2008 .on_mouse_down(
2009 MouseButton::Navigate(NavigationDirection::Forward),
2010 cx.listener(|pane, _, cx| {
2011 if let Some(workspace) = pane.workspace.upgrade() {
2012 let pane = cx.view().downgrade();
2013 cx.window_context().defer(move |cx| {
2014 workspace.update(cx, |workspace, cx| {
2015 workspace.go_forward(pane, cx).detach_and_log_err(cx)
2016 })
2017 })
2018 }
2019 }),
2020 )
2021 }
2022}
2023
2024impl ItemNavHistory {
2025 pub fn push<D: 'static + Send + Any>(&mut self, data: Option<D>, cx: &mut WindowContext) {
2026 self.history.push(data, self.item.clone(), cx);
2027 }
2028
2029 pub fn pop_backward(&mut self, cx: &mut WindowContext) -> Option<NavigationEntry> {
2030 self.history.pop(NavigationMode::GoingBack, cx)
2031 }
2032
2033 pub fn pop_forward(&mut self, cx: &mut WindowContext) -> Option<NavigationEntry> {
2034 self.history.pop(NavigationMode::GoingForward, cx)
2035 }
2036}
2037
2038impl NavHistory {
2039 pub fn for_each_entry(
2040 &self,
2041 cx: &AppContext,
2042 mut f: impl FnMut(&NavigationEntry, (ProjectPath, Option<PathBuf>)),
2043 ) {
2044 let borrowed_history = self.0.lock();
2045 borrowed_history
2046 .forward_stack
2047 .iter()
2048 .chain(borrowed_history.backward_stack.iter())
2049 .chain(borrowed_history.closed_stack.iter())
2050 .for_each(|entry| {
2051 if let Some(project_and_abs_path) =
2052 borrowed_history.paths_by_item.get(&entry.item.id())
2053 {
2054 f(entry, project_and_abs_path.clone());
2055 } else if let Some(item) = entry.item.upgrade() {
2056 if let Some(path) = item.project_path(cx) {
2057 f(entry, (path, None));
2058 }
2059 }
2060 })
2061 }
2062
2063 pub fn set_mode(&mut self, mode: NavigationMode) {
2064 self.0.lock().mode = mode;
2065 }
2066
2067 pub fn mode(&self) -> NavigationMode {
2068 self.0.lock().mode
2069 }
2070
2071 pub fn disable(&mut self) {
2072 self.0.lock().mode = NavigationMode::Disabled;
2073 }
2074
2075 pub fn enable(&mut self) {
2076 self.0.lock().mode = NavigationMode::Normal;
2077 }
2078
2079 pub fn pop(&mut self, mode: NavigationMode, cx: &mut WindowContext) -> Option<NavigationEntry> {
2080 let mut state = self.0.lock();
2081 let entry = match mode {
2082 NavigationMode::Normal | NavigationMode::Disabled | NavigationMode::ClosingItem => {
2083 return None
2084 }
2085 NavigationMode::GoingBack => &mut state.backward_stack,
2086 NavigationMode::GoingForward => &mut state.forward_stack,
2087 NavigationMode::ReopeningClosedItem => &mut state.closed_stack,
2088 }
2089 .pop_back();
2090 if entry.is_some() {
2091 state.did_update(cx);
2092 }
2093 entry
2094 }
2095
2096 pub fn push<D: 'static + Send + Any>(
2097 &mut self,
2098 data: Option<D>,
2099 item: Arc<dyn WeakItemHandle>,
2100 cx: &mut WindowContext,
2101 ) {
2102 let state = &mut *self.0.lock();
2103 match state.mode {
2104 NavigationMode::Disabled => {}
2105 NavigationMode::Normal | NavigationMode::ReopeningClosedItem => {
2106 if state.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
2107 state.backward_stack.pop_front();
2108 }
2109 state.backward_stack.push_back(NavigationEntry {
2110 item,
2111 data: data.map(|data| Box::new(data) as Box<dyn Any + Send>),
2112 timestamp: state.next_timestamp.fetch_add(1, Ordering::SeqCst),
2113 });
2114 state.forward_stack.clear();
2115 }
2116 NavigationMode::GoingBack => {
2117 if state.forward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
2118 state.forward_stack.pop_front();
2119 }
2120 state.forward_stack.push_back(NavigationEntry {
2121 item,
2122 data: data.map(|data| Box::new(data) as Box<dyn Any + Send>),
2123 timestamp: state.next_timestamp.fetch_add(1, Ordering::SeqCst),
2124 });
2125 }
2126 NavigationMode::GoingForward => {
2127 if state.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
2128 state.backward_stack.pop_front();
2129 }
2130 state.backward_stack.push_back(NavigationEntry {
2131 item,
2132 data: data.map(|data| Box::new(data) as Box<dyn Any + Send>),
2133 timestamp: state.next_timestamp.fetch_add(1, Ordering::SeqCst),
2134 });
2135 }
2136 NavigationMode::ClosingItem => {
2137 if state.closed_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
2138 state.closed_stack.pop_front();
2139 }
2140 state.closed_stack.push_back(NavigationEntry {
2141 item,
2142 data: data.map(|data| Box::new(data) as Box<dyn Any + Send>),
2143 timestamp: state.next_timestamp.fetch_add(1, Ordering::SeqCst),
2144 });
2145 }
2146 }
2147 state.did_update(cx);
2148 }
2149
2150 pub fn remove_item(&mut self, item_id: EntityId) {
2151 let mut state = self.0.lock();
2152 state.paths_by_item.remove(&item_id);
2153 state
2154 .backward_stack
2155 .retain(|entry| entry.item.id() != item_id);
2156 state
2157 .forward_stack
2158 .retain(|entry| entry.item.id() != item_id);
2159 state
2160 .closed_stack
2161 .retain(|entry| entry.item.id() != item_id);
2162 }
2163
2164 pub fn path_for_item(&self, item_id: EntityId) -> Option<(ProjectPath, Option<PathBuf>)> {
2165 self.0.lock().paths_by_item.get(&item_id).cloned()
2166 }
2167}
2168
2169impl NavHistoryState {
2170 pub fn did_update(&self, cx: &mut WindowContext) {
2171 if let Some(pane) = self.pane.upgrade() {
2172 cx.defer(move |cx| {
2173 pane.update(cx, |pane, cx| pane.history_updated(cx));
2174 });
2175 }
2176 }
2177}
2178
2179fn dirty_message_for(buffer_path: Option<ProjectPath>) -> String {
2180 let path = buffer_path
2181 .as_ref()
2182 .and_then(|p| p.path.to_str())
2183 .unwrap_or(&"This buffer");
2184 let path = truncate_and_remove_front(path, 80);
2185 format!("{path} contains unsaved edits. Do you want to save it?")
2186}
2187
2188#[cfg(test)]
2189mod tests {
2190 use super::*;
2191 use crate::item::test::{TestItem, TestProjectItem};
2192 use gpui::{TestAppContext, VisualTestContext};
2193 use project::FakeFs;
2194 use settings::SettingsStore;
2195 use theme::LoadThemes;
2196
2197 #[gpui::test]
2198 async fn test_remove_active_empty(cx: &mut TestAppContext) {
2199 init_test(cx);
2200 let fs = FakeFs::new(cx.executor());
2201
2202 let project = Project::test(fs, None, cx).await;
2203 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2204 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2205
2206 pane.update(cx, |pane, cx| {
2207 assert!(pane
2208 .close_active_item(&CloseActiveItem { save_intent: None }, cx)
2209 .is_none())
2210 });
2211 }
2212
2213 #[gpui::test]
2214 async fn test_add_item_with_new_item(cx: &mut TestAppContext) {
2215 init_test(cx);
2216 let fs = FakeFs::new(cx.executor());
2217
2218 let project = Project::test(fs, None, cx).await;
2219 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2220 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2221
2222 // 1. Add with a destination index
2223 // a. Add before the active item
2224 set_labeled_items(&pane, ["A", "B*", "C"], cx);
2225 pane.update(cx, |pane, cx| {
2226 pane.add_item(
2227 Box::new(cx.build_view(|cx| TestItem::new(cx).with_label("D"))),
2228 false,
2229 false,
2230 Some(0),
2231 cx,
2232 );
2233 });
2234 assert_item_labels(&pane, ["D*", "A", "B", "C"], cx);
2235
2236 // b. Add after the active item
2237 set_labeled_items(&pane, ["A", "B*", "C"], cx);
2238 pane.update(cx, |pane, cx| {
2239 pane.add_item(
2240 Box::new(cx.build_view(|cx| TestItem::new(cx).with_label("D"))),
2241 false,
2242 false,
2243 Some(2),
2244 cx,
2245 );
2246 });
2247 assert_item_labels(&pane, ["A", "B", "D*", "C"], cx);
2248
2249 // c. Add at the end of the item list (including off the length)
2250 set_labeled_items(&pane, ["A", "B*", "C"], cx);
2251 pane.update(cx, |pane, cx| {
2252 pane.add_item(
2253 Box::new(cx.build_view(|cx| TestItem::new(cx).with_label("D"))),
2254 false,
2255 false,
2256 Some(5),
2257 cx,
2258 );
2259 });
2260 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2261
2262 // 2. Add without a destination index
2263 // a. Add with active item at the start of the item list
2264 set_labeled_items(&pane, ["A*", "B", "C"], cx);
2265 pane.update(cx, |pane, cx| {
2266 pane.add_item(
2267 Box::new(cx.build_view(|cx| TestItem::new(cx).with_label("D"))),
2268 false,
2269 false,
2270 None,
2271 cx,
2272 );
2273 });
2274 set_labeled_items(&pane, ["A", "D*", "B", "C"], cx);
2275
2276 // b. Add with active item at the end of the item list
2277 set_labeled_items(&pane, ["A", "B", "C*"], cx);
2278 pane.update(cx, |pane, cx| {
2279 pane.add_item(
2280 Box::new(cx.build_view(|cx| TestItem::new(cx).with_label("D"))),
2281 false,
2282 false,
2283 None,
2284 cx,
2285 );
2286 });
2287 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2288 }
2289
2290 #[gpui::test]
2291 async fn test_add_item_with_existing_item(cx: &mut TestAppContext) {
2292 init_test(cx);
2293 let fs = FakeFs::new(cx.executor());
2294
2295 let project = Project::test(fs, None, cx).await;
2296 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2297 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2298
2299 // 1. Add with a destination index
2300 // 1a. Add before the active item
2301 let [_, _, _, d] = set_labeled_items(&pane, ["A", "B*", "C", "D"], cx);
2302 pane.update(cx, |pane, cx| {
2303 pane.add_item(d, false, false, Some(0), cx);
2304 });
2305 assert_item_labels(&pane, ["D*", "A", "B", "C"], cx);
2306
2307 // 1b. Add after the active item
2308 let [_, _, _, d] = set_labeled_items(&pane, ["A", "B*", "C", "D"], cx);
2309 pane.update(cx, |pane, cx| {
2310 pane.add_item(d, false, false, Some(2), cx);
2311 });
2312 assert_item_labels(&pane, ["A", "B", "D*", "C"], cx);
2313
2314 // 1c. Add at the end of the item list (including off the length)
2315 let [a, _, _, _] = set_labeled_items(&pane, ["A", "B*", "C", "D"], cx);
2316 pane.update(cx, |pane, cx| {
2317 pane.add_item(a, false, false, Some(5), cx);
2318 });
2319 assert_item_labels(&pane, ["B", "C", "D", "A*"], cx);
2320
2321 // 1d. Add same item to active index
2322 let [_, b, _] = set_labeled_items(&pane, ["A", "B*", "C"], cx);
2323 pane.update(cx, |pane, cx| {
2324 pane.add_item(b, false, false, Some(1), cx);
2325 });
2326 assert_item_labels(&pane, ["A", "B*", "C"], cx);
2327
2328 // 1e. Add item to index after same item in last position
2329 let [_, _, c] = set_labeled_items(&pane, ["A", "B*", "C"], cx);
2330 pane.update(cx, |pane, cx| {
2331 pane.add_item(c, false, false, Some(2), cx);
2332 });
2333 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2334
2335 // 2. Add without a destination index
2336 // 2a. Add with active item at the start of the item list
2337 let [_, _, _, d] = set_labeled_items(&pane, ["A*", "B", "C", "D"], cx);
2338 pane.update(cx, |pane, cx| {
2339 pane.add_item(d, false, false, None, cx);
2340 });
2341 assert_item_labels(&pane, ["A", "D*", "B", "C"], cx);
2342
2343 // 2b. Add with active item at the end of the item list
2344 let [a, _, _, _] = set_labeled_items(&pane, ["A", "B", "C", "D*"], cx);
2345 pane.update(cx, |pane, cx| {
2346 pane.add_item(a, false, false, None, cx);
2347 });
2348 assert_item_labels(&pane, ["B", "C", "D", "A*"], cx);
2349
2350 // 2c. Add active item to active item at end of list
2351 let [_, _, c] = set_labeled_items(&pane, ["A", "B", "C*"], cx);
2352 pane.update(cx, |pane, cx| {
2353 pane.add_item(c, false, false, None, cx);
2354 });
2355 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2356
2357 // 2d. Add active item to active item at start of list
2358 let [a, _, _] = set_labeled_items(&pane, ["A*", "B", "C"], cx);
2359 pane.update(cx, |pane, cx| {
2360 pane.add_item(a, false, false, None, cx);
2361 });
2362 assert_item_labels(&pane, ["A*", "B", "C"], cx);
2363 }
2364
2365 #[gpui::test]
2366 async fn test_add_item_with_same_project_entries(cx: &mut TestAppContext) {
2367 init_test(cx);
2368 let fs = FakeFs::new(cx.executor());
2369
2370 let project = Project::test(fs, None, cx).await;
2371 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2372 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2373
2374 // singleton view
2375 pane.update(cx, |pane, cx| {
2376 pane.add_item(
2377 Box::new(cx.build_view(|cx| {
2378 TestItem::new(cx)
2379 .with_singleton(true)
2380 .with_label("buffer 1")
2381 .with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
2382 })),
2383 false,
2384 false,
2385 None,
2386 cx,
2387 );
2388 });
2389 assert_item_labels(&pane, ["buffer 1*"], cx);
2390
2391 // new singleton view with the same project entry
2392 pane.update(cx, |pane, cx| {
2393 pane.add_item(
2394 Box::new(cx.build_view(|cx| {
2395 TestItem::new(cx)
2396 .with_singleton(true)
2397 .with_label("buffer 1")
2398 .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
2399 })),
2400 false,
2401 false,
2402 None,
2403 cx,
2404 );
2405 });
2406 assert_item_labels(&pane, ["buffer 1*"], cx);
2407
2408 // new singleton view with different project entry
2409 pane.update(cx, |pane, cx| {
2410 pane.add_item(
2411 Box::new(cx.build_view(|cx| {
2412 TestItem::new(cx)
2413 .with_singleton(true)
2414 .with_label("buffer 2")
2415 .with_project_items(&[TestProjectItem::new(2, "2.txt", cx)])
2416 })),
2417 false,
2418 false,
2419 None,
2420 cx,
2421 );
2422 });
2423 assert_item_labels(&pane, ["buffer 1", "buffer 2*"], cx);
2424
2425 // new multibuffer view with the same project entry
2426 pane.update(cx, |pane, cx| {
2427 pane.add_item(
2428 Box::new(cx.build_view(|cx| {
2429 TestItem::new(cx)
2430 .with_singleton(false)
2431 .with_label("multibuffer 1")
2432 .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
2433 })),
2434 false,
2435 false,
2436 None,
2437 cx,
2438 );
2439 });
2440 assert_item_labels(&pane, ["buffer 1", "buffer 2", "multibuffer 1*"], cx);
2441
2442 // another multibuffer view with the same project entry
2443 pane.update(cx, |pane, cx| {
2444 pane.add_item(
2445 Box::new(cx.build_view(|cx| {
2446 TestItem::new(cx)
2447 .with_singleton(false)
2448 .with_label("multibuffer 1b")
2449 .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
2450 })),
2451 false,
2452 false,
2453 None,
2454 cx,
2455 );
2456 });
2457 assert_item_labels(
2458 &pane,
2459 ["buffer 1", "buffer 2", "multibuffer 1", "multibuffer 1b*"],
2460 cx,
2461 );
2462 }
2463
2464 #[gpui::test]
2465 async fn test_remove_item_ordering(cx: &mut TestAppContext) {
2466 init_test(cx);
2467 let fs = FakeFs::new(cx.executor());
2468
2469 let project = Project::test(fs, None, cx).await;
2470 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2471 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2472
2473 add_labeled_item(&pane, "A", false, cx);
2474 add_labeled_item(&pane, "B", false, cx);
2475 add_labeled_item(&pane, "C", false, cx);
2476 add_labeled_item(&pane, "D", false, cx);
2477 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2478
2479 pane.update(cx, |pane, cx| pane.activate_item(1, false, false, cx));
2480 add_labeled_item(&pane, "1", false, cx);
2481 assert_item_labels(&pane, ["A", "B", "1*", "C", "D"], cx);
2482
2483 pane.update(cx, |pane, cx| {
2484 pane.close_active_item(&CloseActiveItem { save_intent: None }, cx)
2485 })
2486 .unwrap()
2487 .await
2488 .unwrap();
2489 assert_item_labels(&pane, ["A", "B*", "C", "D"], cx);
2490
2491 pane.update(cx, |pane, cx| pane.activate_item(3, false, false, cx));
2492 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2493
2494 pane.update(cx, |pane, cx| {
2495 pane.close_active_item(&CloseActiveItem { save_intent: None }, cx)
2496 })
2497 .unwrap()
2498 .await
2499 .unwrap();
2500 assert_item_labels(&pane, ["A", "B*", "C"], cx);
2501
2502 pane.update(cx, |pane, cx| {
2503 pane.close_active_item(&CloseActiveItem { save_intent: None }, cx)
2504 })
2505 .unwrap()
2506 .await
2507 .unwrap();
2508 assert_item_labels(&pane, ["A", "C*"], cx);
2509
2510 pane.update(cx, |pane, cx| {
2511 pane.close_active_item(&CloseActiveItem { save_intent: None }, cx)
2512 })
2513 .unwrap()
2514 .await
2515 .unwrap();
2516 assert_item_labels(&pane, ["A*"], cx);
2517 }
2518
2519 #[gpui::test]
2520 async fn test_close_inactive_items(cx: &mut TestAppContext) {
2521 init_test(cx);
2522 let fs = FakeFs::new(cx.executor());
2523
2524 let project = Project::test(fs, None, cx).await;
2525 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2526 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2527
2528 set_labeled_items(&pane, ["A", "B", "C*", "D", "E"], cx);
2529
2530 pane.update(cx, |pane, cx| {
2531 pane.close_inactive_items(&CloseInactiveItems, cx)
2532 })
2533 .unwrap()
2534 .await
2535 .unwrap();
2536 assert_item_labels(&pane, ["C*"], cx);
2537 }
2538
2539 #[gpui::test]
2540 async fn test_close_clean_items(cx: &mut TestAppContext) {
2541 init_test(cx);
2542 let fs = FakeFs::new(cx.executor());
2543
2544 let project = Project::test(fs, None, cx).await;
2545 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2546 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2547
2548 add_labeled_item(&pane, "A", true, cx);
2549 add_labeled_item(&pane, "B", false, cx);
2550 add_labeled_item(&pane, "C", true, cx);
2551 add_labeled_item(&pane, "D", false, cx);
2552 add_labeled_item(&pane, "E", false, cx);
2553 assert_item_labels(&pane, ["A^", "B", "C^", "D", "E*"], cx);
2554
2555 pane.update(cx, |pane, cx| pane.close_clean_items(&CloseCleanItems, cx))
2556 .unwrap()
2557 .await
2558 .unwrap();
2559 assert_item_labels(&pane, ["A^", "C*^"], cx);
2560 }
2561
2562 #[gpui::test]
2563 async fn test_close_items_to_the_left(cx: &mut TestAppContext) {
2564 init_test(cx);
2565 let fs = FakeFs::new(cx.executor());
2566
2567 let project = Project::test(fs, None, cx).await;
2568 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2569 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2570
2571 set_labeled_items(&pane, ["A", "B", "C*", "D", "E"], cx);
2572
2573 pane.update(cx, |pane, cx| {
2574 pane.close_items_to_the_left(&CloseItemsToTheLeft, cx)
2575 })
2576 .unwrap()
2577 .await
2578 .unwrap();
2579 assert_item_labels(&pane, ["C*", "D", "E"], cx);
2580 }
2581
2582 #[gpui::test]
2583 async fn test_close_items_to_the_right(cx: &mut TestAppContext) {
2584 init_test(cx);
2585 let fs = FakeFs::new(cx.executor());
2586
2587 let project = Project::test(fs, None, cx).await;
2588 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2589 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2590
2591 set_labeled_items(&pane, ["A", "B", "C*", "D", "E"], cx);
2592
2593 pane.update(cx, |pane, cx| {
2594 pane.close_items_to_the_right(&CloseItemsToTheRight, cx)
2595 })
2596 .unwrap()
2597 .await
2598 .unwrap();
2599 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2600 }
2601
2602 #[gpui::test]
2603 async fn test_close_all_items(cx: &mut TestAppContext) {
2604 init_test(cx);
2605 let fs = FakeFs::new(cx.executor());
2606
2607 let project = Project::test(fs, None, cx).await;
2608 let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
2609 let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
2610
2611 add_labeled_item(&pane, "A", false, cx);
2612 add_labeled_item(&pane, "B", false, cx);
2613 add_labeled_item(&pane, "C", false, cx);
2614 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2615
2616 pane.update(cx, |pane, cx| {
2617 pane.close_all_items(&CloseAllItems { save_intent: None }, cx)
2618 })
2619 .unwrap()
2620 .await
2621 .unwrap();
2622 assert_item_labels(&pane, [], cx);
2623
2624 add_labeled_item(&pane, "A", true, cx);
2625 add_labeled_item(&pane, "B", true, cx);
2626 add_labeled_item(&pane, "C", true, cx);
2627 assert_item_labels(&pane, ["A^", "B^", "C*^"], cx);
2628
2629 let save = pane
2630 .update(cx, |pane, cx| {
2631 pane.close_all_items(&CloseAllItems { save_intent: None }, cx)
2632 })
2633 .unwrap();
2634
2635 cx.executor().run_until_parked();
2636 cx.simulate_prompt_answer(2);
2637 save.await.unwrap();
2638 assert_item_labels(&pane, [], cx);
2639 }
2640
2641 fn init_test(cx: &mut TestAppContext) {
2642 cx.update(|cx| {
2643 let settings_store = SettingsStore::test(cx);
2644 cx.set_global(settings_store);
2645 theme::init(LoadThemes::JustBase, cx);
2646 crate::init_settings(cx);
2647 Project::init_settings(cx);
2648 });
2649 }
2650
2651 fn add_labeled_item(
2652 pane: &View<Pane>,
2653 label: &str,
2654 is_dirty: bool,
2655 cx: &mut VisualTestContext,
2656 ) -> Box<View<TestItem>> {
2657 pane.update(cx, |pane, cx| {
2658 let labeled_item = Box::new(
2659 cx.build_view(|cx| TestItem::new(cx).with_label(label).with_dirty(is_dirty)),
2660 );
2661 pane.add_item(labeled_item.clone(), false, false, None, cx);
2662 labeled_item
2663 })
2664 }
2665
2666 fn set_labeled_items<const COUNT: usize>(
2667 pane: &View<Pane>,
2668 labels: [&str; COUNT],
2669 cx: &mut VisualTestContext,
2670 ) -> [Box<View<TestItem>>; COUNT] {
2671 pane.update(cx, |pane, cx| {
2672 pane.items.clear();
2673 let mut active_item_index = 0;
2674
2675 let mut index = 0;
2676 let items = labels.map(|mut label| {
2677 if label.ends_with("*") {
2678 label = label.trim_end_matches("*");
2679 active_item_index = index;
2680 }
2681
2682 let labeled_item =
2683 Box::new(cx.build_view(|cx| TestItem::new(cx).with_label(label)));
2684 pane.add_item(labeled_item.clone(), false, false, None, cx);
2685 index += 1;
2686 labeled_item
2687 });
2688
2689 pane.activate_item(active_item_index, false, false, cx);
2690
2691 items
2692 })
2693 }
2694
2695 // Assert the item label, with the active item label suffixed with a '*'
2696 fn assert_item_labels<const COUNT: usize>(
2697 pane: &View<Pane>,
2698 expected_states: [&str; COUNT],
2699 cx: &mut VisualTestContext,
2700 ) {
2701 pane.update(cx, |pane, cx| {
2702 let actual_states = pane
2703 .items
2704 .iter()
2705 .enumerate()
2706 .map(|(ix, item)| {
2707 let mut state = item
2708 .to_any()
2709 .downcast::<TestItem>()
2710 .unwrap()
2711 .read(cx)
2712 .label
2713 .clone();
2714 if ix == pane.active_item_index {
2715 state.push('*');
2716 }
2717 if item.is_dirty(cx) {
2718 state.push('^');
2719 }
2720 state
2721 })
2722 .collect::<Vec<_>>();
2723
2724 assert_eq!(
2725 actual_states, expected_states,
2726 "pane items do not match expectation"
2727 );
2728 })
2729 }
2730}
2731
2732impl Render for DraggedTab {
2733 type Element = <Tab as RenderOnce>::Rendered;
2734
2735 fn render(&mut self, cx: &mut ViewContext<Self>) -> Self::Element {
2736 let ui_font = ThemeSettings::get_global(cx).ui_font.family.clone();
2737 let item = &self.pane.read(cx).items[self.ix];
2738 let label = item.tab_content(Some(self.detail), false, cx);
2739 Tab::new("")
2740 .selected(self.is_active)
2741 .child(label)
2742 .render(cx)
2743 .font(ui_font)
2744 }
2745}