1mod dragged_item_receiver;
2
3use super::{ItemHandle, SplitDirection};
4use crate::{
5 dock::{icon_for_dock_anchor, AnchorDockBottom, AnchorDockRight, ExpandDock, HideDock},
6 item::WeakItemHandle,
7 toolbar::Toolbar,
8 Item, NewFile, NewSearch, NewTerminal, Workspace,
9};
10use anyhow::Result;
11use collections::{HashMap, HashSet, VecDeque};
12use context_menu::{ContextMenu, ContextMenuItem};
13use drag_and_drop::Draggable;
14pub use dragged_item_receiver::{dragged_item_receiver, handle_dropped_item};
15use futures::StreamExt;
16use gpui::{
17 actions,
18 elements::*,
19 geometry::{
20 rect::RectF,
21 vector::{vec2f, Vector2F},
22 },
23 impl_actions, impl_internal_actions,
24 keymap_matcher::KeymapContext,
25 platform::{CursorStyle, NavigationDirection},
26 Action, AnyViewHandle, AnyWeakViewHandle, AppContext, AsyncAppContext, Entity, EventContext,
27 ModelHandle, MouseButton, MouseRegion, MutableAppContext, PromptLevel, Quad, RenderContext,
28 Task, View, ViewContext, ViewHandle, WeakViewHandle,
29};
30use project::{Project, ProjectEntryId, ProjectPath};
31use serde::Deserialize;
32use settings::{Autosave, DockAnchor, Settings};
33use std::{any::Any, cell::RefCell, cmp, mem, path::Path, rc::Rc};
34use theme::Theme;
35use util::ResultExt;
36
37#[derive(Clone, Deserialize, PartialEq)]
38pub struct ActivateItem(pub usize);
39
40actions!(
41 pane,
42 [
43 ActivatePrevItem,
44 ActivateNextItem,
45 ActivateLastItem,
46 CloseActiveItem,
47 CloseInactiveItems,
48 CloseCleanItems,
49 CloseAllItems,
50 ReopenClosedItem,
51 SplitLeft,
52 SplitUp,
53 SplitRight,
54 SplitDown,
55 ]
56);
57
58#[derive(Clone, PartialEq)]
59pub struct CloseItem {
60 pub item_id: usize,
61 pub pane: WeakViewHandle<Pane>,
62}
63
64#[derive(Clone, PartialEq)]
65pub struct MoveItem {
66 pub item_id: usize,
67 pub from: WeakViewHandle<Pane>,
68 pub to: WeakViewHandle<Pane>,
69 pub destination_index: usize,
70}
71
72#[derive(Clone, Deserialize, PartialEq)]
73pub struct GoBack {
74 #[serde(skip_deserializing)]
75 pub pane: Option<WeakViewHandle<Pane>>,
76}
77
78#[derive(Clone, Deserialize, PartialEq)]
79pub struct GoForward {
80 #[serde(skip_deserializing)]
81 pub pane: Option<WeakViewHandle<Pane>>,
82}
83
84#[derive(Clone, PartialEq)]
85pub struct DeploySplitMenu {
86 position: Vector2F,
87}
88
89#[derive(Clone, PartialEq)]
90pub struct DeployDockMenu {
91 position: Vector2F,
92}
93
94#[derive(Clone, PartialEq)]
95pub struct DeployNewMenu {
96 position: Vector2F,
97}
98
99impl_actions!(pane, [GoBack, GoForward, ActivateItem]);
100impl_internal_actions!(
101 pane,
102 [
103 CloseItem,
104 DeploySplitMenu,
105 DeployNewMenu,
106 DeployDockMenu,
107 MoveItem
108 ]
109);
110
111const MAX_NAVIGATION_HISTORY_LEN: usize = 1024;
112
113pub type BackgroundActions = fn() -> &'static [(&'static str, &'static dyn Action)];
114
115pub fn init(cx: &mut MutableAppContext) {
116 cx.add_action(|pane: &mut Pane, action: &ActivateItem, cx| {
117 pane.activate_item(action.0, true, true, cx);
118 });
119 cx.add_action(|pane: &mut Pane, _: &ActivateLastItem, cx| {
120 pane.activate_item(pane.items.len() - 1, true, true, cx);
121 });
122 cx.add_action(|pane: &mut Pane, _: &ActivatePrevItem, cx| {
123 pane.activate_prev_item(true, cx);
124 });
125 cx.add_action(|pane: &mut Pane, _: &ActivateNextItem, cx| {
126 pane.activate_next_item(true, cx);
127 });
128 cx.add_async_action(Pane::close_active_item);
129 cx.add_async_action(Pane::close_inactive_items);
130 cx.add_async_action(Pane::close_clean_items);
131 cx.add_async_action(Pane::close_all_items);
132 cx.add_async_action(|workspace: &mut Workspace, action: &CloseItem, cx| {
133 let pane = action.pane.upgrade(cx)?;
134 let task = Pane::close_item(workspace, pane, action.item_id, cx);
135 Some(cx.foreground().spawn(async move {
136 task.await?;
137 Ok(())
138 }))
139 });
140 cx.add_action(
141 |workspace,
142 MoveItem {
143 from,
144 to,
145 item_id,
146 destination_index,
147 },
148 cx| {
149 // Get item handle to move
150 let from = if let Some(from) = from.upgrade(cx) {
151 from
152 } else {
153 return;
154 };
155
156 // Add item to new pane at given index
157 let to = if let Some(to) = to.upgrade(cx) {
158 to
159 } else {
160 return;
161 };
162
163 Pane::move_item(workspace, from, to, *item_id, *destination_index, cx)
164 },
165 );
166 cx.add_action(|pane: &mut Pane, _: &SplitLeft, cx| pane.split(SplitDirection::Left, cx));
167 cx.add_action(|pane: &mut Pane, _: &SplitUp, cx| pane.split(SplitDirection::Up, cx));
168 cx.add_action(|pane: &mut Pane, _: &SplitRight, cx| pane.split(SplitDirection::Right, cx));
169 cx.add_action(|pane: &mut Pane, _: &SplitDown, cx| pane.split(SplitDirection::Down, cx));
170 cx.add_action(Pane::deploy_split_menu);
171 cx.add_action(Pane::deploy_new_menu);
172 cx.add_action(Pane::deploy_dock_menu);
173 cx.add_action(|workspace: &mut Workspace, _: &ReopenClosedItem, cx| {
174 Pane::reopen_closed_item(workspace, cx).detach();
175 });
176 cx.add_action(|workspace: &mut Workspace, action: &GoBack, cx| {
177 Pane::go_back(
178 workspace,
179 action
180 .pane
181 .as_ref()
182 .and_then(|weak_handle| weak_handle.upgrade(cx)),
183 cx,
184 )
185 .detach();
186 });
187 cx.add_action(|workspace: &mut Workspace, action: &GoForward, cx| {
188 Pane::go_forward(
189 workspace,
190 action
191 .pane
192 .as_ref()
193 .and_then(|weak_handle| weak_handle.upgrade(cx)),
194 cx,
195 )
196 .detach();
197 });
198}
199
200#[derive(Debug)]
201pub enum Event {
202 ActivateItem { local: bool },
203 Remove,
204 RemoveItem { item_id: usize },
205 Split(SplitDirection),
206 ChangeItemTitle,
207}
208
209pub struct Pane {
210 items: Vec<Box<dyn ItemHandle>>,
211 activation_history: Vec<usize>,
212 is_active: bool,
213 active_item_index: usize,
214 last_focused_view_by_item: HashMap<usize, AnyWeakViewHandle>,
215 autoscroll: bool,
216 nav_history: Rc<RefCell<NavHistory>>,
217 toolbar: ViewHandle<Toolbar>,
218 tab_bar_context_menu: ViewHandle<ContextMenu>,
219 docked: Option<DockAnchor>,
220 background_actions: BackgroundActions,
221 workspace_id: usize,
222}
223
224pub struct ItemNavHistory {
225 history: Rc<RefCell<NavHistory>>,
226 item: Rc<dyn WeakItemHandle>,
227}
228
229struct NavHistory {
230 mode: NavigationMode,
231 backward_stack: VecDeque<NavigationEntry>,
232 forward_stack: VecDeque<NavigationEntry>,
233 closed_stack: VecDeque<NavigationEntry>,
234 paths_by_item: HashMap<usize, ProjectPath>,
235 pane: WeakViewHandle<Pane>,
236}
237
238#[derive(Copy, Clone)]
239enum NavigationMode {
240 Normal,
241 GoingBack,
242 GoingForward,
243 ClosingItem,
244 ReopeningClosedItem,
245 Disabled,
246}
247
248impl Default for NavigationMode {
249 fn default() -> Self {
250 Self::Normal
251 }
252}
253
254pub struct NavigationEntry {
255 pub item: Rc<dyn WeakItemHandle>,
256 pub data: Option<Box<dyn Any>>,
257}
258
259struct DraggedItem {
260 item: Box<dyn ItemHandle>,
261 pane: WeakViewHandle<Pane>,
262}
263
264pub enum ReorderBehavior {
265 None,
266 MoveAfterActive,
267 MoveToIndex(usize),
268}
269
270enum ItemType {
271 Active,
272 Inactive,
273 Clean,
274 All,
275}
276
277impl Pane {
278 pub fn new(
279 workspace_id: usize,
280 docked: Option<DockAnchor>,
281 background_actions: BackgroundActions,
282 cx: &mut ViewContext<Self>,
283 ) -> Self {
284 let handle = cx.weak_handle();
285 let context_menu = cx.add_view(ContextMenu::new);
286 Self {
287 items: Vec::new(),
288 activation_history: Vec::new(),
289 is_active: true,
290 active_item_index: 0,
291 last_focused_view_by_item: Default::default(),
292 autoscroll: false,
293 nav_history: Rc::new(RefCell::new(NavHistory {
294 mode: NavigationMode::Normal,
295 backward_stack: Default::default(),
296 forward_stack: Default::default(),
297 closed_stack: Default::default(),
298 paths_by_item: Default::default(),
299 pane: handle.clone(),
300 })),
301 toolbar: cx.add_view(|_| Toolbar::new(handle)),
302 tab_bar_context_menu: context_menu,
303 docked,
304 background_actions,
305 workspace_id,
306 }
307 }
308
309 pub fn is_active(&self) -> bool {
310 self.is_active
311 }
312
313 pub fn set_active(&mut self, is_active: bool, cx: &mut ViewContext<Self>) {
314 self.is_active = is_active;
315 cx.notify();
316 }
317
318 pub fn set_docked(&mut self, docked: Option<DockAnchor>, cx: &mut ViewContext<Self>) {
319 self.docked = docked;
320 cx.notify();
321 }
322
323 pub fn nav_history_for_item<T: Item>(&self, item: &ViewHandle<T>) -> ItemNavHistory {
324 ItemNavHistory {
325 history: self.nav_history.clone(),
326 item: Rc::new(item.downgrade()),
327 }
328 }
329
330 pub fn go_back(
331 workspace: &mut Workspace,
332 pane: Option<ViewHandle<Pane>>,
333 cx: &mut ViewContext<Workspace>,
334 ) -> Task<()> {
335 Self::navigate_history(
336 workspace,
337 pane.unwrap_or_else(|| workspace.active_pane().clone()),
338 NavigationMode::GoingBack,
339 cx,
340 )
341 }
342
343 pub fn go_forward(
344 workspace: &mut Workspace,
345 pane: Option<ViewHandle<Pane>>,
346 cx: &mut ViewContext<Workspace>,
347 ) -> Task<()> {
348 Self::navigate_history(
349 workspace,
350 pane.unwrap_or_else(|| workspace.active_pane().clone()),
351 NavigationMode::GoingForward,
352 cx,
353 )
354 }
355
356 pub fn reopen_closed_item(
357 workspace: &mut Workspace,
358 cx: &mut ViewContext<Workspace>,
359 ) -> Task<()> {
360 Self::navigate_history(
361 workspace,
362 workspace.active_pane().clone(),
363 NavigationMode::ReopeningClosedItem,
364 cx,
365 )
366 }
367
368 pub fn disable_history(&mut self) {
369 self.nav_history.borrow_mut().disable();
370 }
371
372 pub fn enable_history(&mut self) {
373 self.nav_history.borrow_mut().enable();
374 }
375
376 pub fn can_navigate_backward(&self) -> bool {
377 !self.nav_history.borrow().backward_stack.is_empty()
378 }
379
380 pub fn can_navigate_forward(&self) -> bool {
381 !self.nav_history.borrow().forward_stack.is_empty()
382 }
383
384 fn history_updated(&mut self, cx: &mut ViewContext<Self>) {
385 self.toolbar.update(cx, |_, cx| cx.notify());
386 }
387
388 fn navigate_history(
389 workspace: &mut Workspace,
390 pane: ViewHandle<Pane>,
391 mode: NavigationMode,
392 cx: &mut ViewContext<Workspace>,
393 ) -> Task<()> {
394 cx.focus(pane.clone());
395
396 let to_load = pane.update(cx, |pane, cx| {
397 loop {
398 // Retrieve the weak item handle from the history.
399 let entry = pane.nav_history.borrow_mut().pop(mode, cx)?;
400
401 // If the item is still present in this pane, then activate it.
402 if let Some(index) = entry
403 .item
404 .upgrade(cx)
405 .and_then(|v| pane.index_for_item(v.as_ref()))
406 {
407 let prev_active_item_index = pane.active_item_index;
408 pane.nav_history.borrow_mut().set_mode(mode);
409 pane.activate_item(index, true, true, cx);
410 pane.nav_history
411 .borrow_mut()
412 .set_mode(NavigationMode::Normal);
413
414 let mut navigated = prev_active_item_index != pane.active_item_index;
415 if let Some(data) = entry.data {
416 navigated |= pane.active_item()?.navigate(data, cx);
417 }
418
419 if navigated {
420 break None;
421 }
422 }
423 // If the item is no longer present in this pane, then retrieve its
424 // project path in order to reopen it.
425 else {
426 break pane
427 .nav_history
428 .borrow()
429 .paths_by_item
430 .get(&entry.item.id())
431 .cloned()
432 .map(|project_path| (project_path, entry));
433 }
434 }
435 });
436
437 if let Some((project_path, entry)) = to_load {
438 // If the item was no longer present, then load it again from its previous path.
439 let pane = pane.downgrade();
440 let task = workspace.load_path(project_path, cx);
441 cx.spawn(|workspace, mut cx| async move {
442 let task = task.await;
443 if let Some(pane) = pane.upgrade(&cx) {
444 let mut navigated = false;
445 if let Some((project_entry_id, build_item)) = task.log_err() {
446 let prev_active_item_id = pane.update(&mut cx, |pane, _| {
447 pane.nav_history.borrow_mut().set_mode(mode);
448 pane.active_item().map(|p| p.id())
449 });
450
451 let item = workspace.update(&mut cx, |workspace, cx| {
452 Self::open_item(
453 workspace,
454 pane.clone(),
455 project_entry_id,
456 true,
457 cx,
458 build_item,
459 )
460 });
461
462 pane.update(&mut cx, |pane, cx| {
463 navigated |= Some(item.id()) != prev_active_item_id;
464 pane.nav_history
465 .borrow_mut()
466 .set_mode(NavigationMode::Normal);
467 if let Some(data) = entry.data {
468 navigated |= item.navigate(data, cx);
469 }
470 });
471 }
472
473 if !navigated {
474 workspace
475 .update(&mut cx, |workspace, cx| {
476 Self::navigate_history(workspace, pane, mode, cx)
477 })
478 .await;
479 }
480 }
481 })
482 } else {
483 Task::ready(())
484 }
485 }
486
487 pub(crate) fn open_item(
488 workspace: &mut Workspace,
489 pane: ViewHandle<Pane>,
490 project_entry_id: ProjectEntryId,
491 focus_item: bool,
492 cx: &mut ViewContext<Workspace>,
493 build_item: impl FnOnce(&mut ViewContext<Pane>) -> Box<dyn ItemHandle>,
494 ) -> Box<dyn ItemHandle> {
495 let existing_item = pane.update(cx, |pane, cx| {
496 for (index, item) in pane.items.iter().enumerate() {
497 if item.is_singleton(cx)
498 && item.project_entry_ids(cx).as_slice() == [project_entry_id]
499 {
500 let item = item.boxed_clone();
501 return Some((index, item));
502 }
503 }
504 None
505 });
506
507 if let Some((index, existing_item)) = existing_item {
508 pane.update(cx, |pane, cx| {
509 pane.activate_item(index, focus_item, focus_item, cx);
510 });
511 existing_item
512 } else {
513 let new_item = pane.update(cx, |_, cx| build_item(cx));
514 Pane::add_item(
515 workspace,
516 &pane,
517 new_item.clone(),
518 true,
519 focus_item,
520 None,
521 cx,
522 );
523 new_item
524 }
525 }
526
527 pub(crate) fn add_item(
528 workspace: &mut Workspace,
529 pane: &ViewHandle<Pane>,
530 item: Box<dyn ItemHandle>,
531 activate_pane: bool,
532 focus_item: bool,
533 destination_index: Option<usize>,
534 cx: &mut ViewContext<Workspace>,
535 ) {
536 // If no destination index is specified, add or move the item after the active item.
537 let mut insertion_index = {
538 let pane = pane.read(cx);
539 cmp::min(
540 if let Some(destination_index) = destination_index {
541 destination_index
542 } else {
543 pane.active_item_index + 1
544 },
545 pane.items.len(),
546 )
547 };
548
549 item.added_to_pane(workspace, pane.clone(), cx);
550
551 // Does the item already exist?
552 let project_entry_id = if item.is_singleton(cx) {
553 item.project_entry_ids(cx).get(0).copied()
554 } else {
555 None
556 };
557
558 let existing_item_index = pane.read(cx).items.iter().position(|existing_item| {
559 if existing_item.id() == item.id() {
560 true
561 } else if existing_item.is_singleton(cx) {
562 existing_item
563 .project_entry_ids(cx)
564 .get(0)
565 .map_or(false, |existing_entry_id| {
566 Some(existing_entry_id) == project_entry_id.as_ref()
567 })
568 } else {
569 false
570 }
571 });
572
573 if let Some(existing_item_index) = existing_item_index {
574 // If the item already exists, move it to the desired destination and activate it
575 pane.update(cx, |pane, cx| {
576 if existing_item_index != insertion_index {
577 cx.reparent(&item);
578 let existing_item_is_active = existing_item_index == pane.active_item_index;
579
580 // If the caller didn't specify a destination and the added item is already
581 // the active one, don't move it
582 if existing_item_is_active && destination_index.is_none() {
583 insertion_index = existing_item_index;
584 } else {
585 pane.items.remove(existing_item_index);
586 if existing_item_index < pane.active_item_index {
587 pane.active_item_index -= 1;
588 }
589 insertion_index = insertion_index.min(pane.items.len());
590
591 pane.items.insert(insertion_index, item.clone());
592
593 if existing_item_is_active {
594 pane.active_item_index = insertion_index;
595 } else if insertion_index <= pane.active_item_index {
596 pane.active_item_index += 1;
597 }
598 }
599
600 cx.notify();
601 }
602
603 pane.activate_item(insertion_index, activate_pane, focus_item, cx);
604 });
605 } else {
606 pane.update(cx, |pane, cx| {
607 cx.reparent(&item);
608 pane.items.insert(insertion_index, item);
609 if insertion_index <= pane.active_item_index {
610 pane.active_item_index += 1;
611 }
612
613 pane.activate_item(insertion_index, activate_pane, focus_item, cx);
614 cx.notify();
615 });
616 }
617 }
618
619 pub fn items_len(&self) -> usize {
620 self.items.len()
621 }
622
623 pub fn items(&self) -> impl Iterator<Item = &Box<dyn ItemHandle>> {
624 self.items.iter()
625 }
626
627 pub fn items_of_type<T: View>(&self) -> impl '_ + Iterator<Item = ViewHandle<T>> {
628 self.items
629 .iter()
630 .filter_map(|item| item.to_any().downcast())
631 }
632
633 pub fn active_item(&self) -> Option<Box<dyn ItemHandle>> {
634 self.items.get(self.active_item_index).cloned()
635 }
636
637 pub fn item_for_entry(
638 &self,
639 entry_id: ProjectEntryId,
640 cx: &AppContext,
641 ) -> Option<Box<dyn ItemHandle>> {
642 self.items.iter().find_map(|item| {
643 if item.is_singleton(cx) && item.project_entry_ids(cx).as_slice() == [entry_id] {
644 Some(item.boxed_clone())
645 } else {
646 None
647 }
648 })
649 }
650
651 pub fn index_for_item(&self, item: &dyn ItemHandle) -> Option<usize> {
652 self.items.iter().position(|i| i.id() == item.id())
653 }
654
655 pub fn activate_item(
656 &mut self,
657 index: usize,
658 activate_pane: bool,
659 focus_item: bool,
660 cx: &mut ViewContext<Self>,
661 ) {
662 use NavigationMode::{GoingBack, GoingForward};
663
664 if index < self.items.len() {
665 let prev_active_item_ix = mem::replace(&mut self.active_item_index, index);
666 if prev_active_item_ix != self.active_item_index
667 || matches!(self.nav_history.borrow().mode, GoingBack | GoingForward)
668 {
669 if let Some(prev_item) = self.items.get(prev_active_item_ix) {
670 prev_item.deactivated(cx);
671 }
672
673 cx.emit(Event::ActivateItem {
674 local: activate_pane,
675 });
676 }
677
678 if let Some(newly_active_item) = self.items.get(index) {
679 self.activation_history
680 .retain(|&previously_active_item_id| {
681 previously_active_item_id != newly_active_item.id()
682 });
683 self.activation_history.push(newly_active_item.id());
684 }
685
686 self.update_toolbar(cx);
687
688 if focus_item {
689 self.focus_active_item(cx);
690 }
691
692 self.autoscroll = true;
693 cx.notify();
694 }
695 }
696
697 pub fn activate_prev_item(&mut self, activate_pane: bool, cx: &mut ViewContext<Self>) {
698 let mut index = self.active_item_index;
699 if index > 0 {
700 index -= 1;
701 } else if !self.items.is_empty() {
702 index = self.items.len() - 1;
703 }
704 self.activate_item(index, activate_pane, activate_pane, cx);
705 }
706
707 pub fn activate_next_item(&mut self, activate_pane: bool, cx: &mut ViewContext<Self>) {
708 let mut index = self.active_item_index;
709 if index + 1 < self.items.len() {
710 index += 1;
711 } else {
712 index = 0;
713 }
714 self.activate_item(index, activate_pane, activate_pane, cx);
715 }
716
717 pub fn close_active_item(
718 workspace: &mut Workspace,
719 _: &CloseActiveItem,
720 cx: &mut ViewContext<Workspace>,
721 ) -> Option<Task<Result<()>>> {
722 Self::close_main(workspace, ItemType::Active, cx)
723 }
724
725 pub fn close_inactive_items(
726 workspace: &mut Workspace,
727 _: &CloseInactiveItems,
728 cx: &mut ViewContext<Workspace>,
729 ) -> Option<Task<Result<()>>> {
730 Self::close_main(workspace, ItemType::Inactive, cx)
731 }
732
733 pub fn close_all_items(
734 workspace: &mut Workspace,
735 _: &CloseAllItems,
736 cx: &mut ViewContext<Workspace>,
737 ) -> Option<Task<Result<()>>> {
738 Self::close_main(workspace, ItemType::All, cx)
739 }
740
741 pub fn close_clean_items(
742 workspace: &mut Workspace,
743 _: &CloseCleanItems,
744 cx: &mut ViewContext<Workspace>,
745 ) -> Option<Task<Result<()>>> {
746 Self::close_main(workspace, ItemType::Clean, cx)
747 }
748
749 fn close_main(
750 workspace: &mut Workspace,
751 close_item_type: ItemType,
752 cx: &mut ViewContext<Workspace>,
753 ) -> Option<Task<Result<()>>> {
754 let pane_handle = workspace.active_pane().clone();
755 let pane = pane_handle.read(cx);
756 if pane.items.is_empty() {
757 return None;
758 }
759
760 let active_item_id = pane.items[pane.active_item_index].id();
761 let clean_item_ids: Vec<_> = pane
762 .items()
763 .filter(|item| !item.is_dirty(cx))
764 .map(|item| item.id())
765 .collect();
766 let task =
767 Self::close_items(
768 workspace,
769 pane_handle,
770 cx,
771 move |item_id| match close_item_type {
772 ItemType::Active => item_id == active_item_id,
773 ItemType::Inactive => item_id != active_item_id,
774 ItemType::Clean => clean_item_ids.contains(&item_id),
775 ItemType::All => true,
776 },
777 );
778
779 Some(cx.foreground().spawn(async move {
780 task.await?;
781 Ok(())
782 }))
783 }
784
785 pub fn close_item(
786 workspace: &mut Workspace,
787 pane: ViewHandle<Pane>,
788 item_id_to_close: usize,
789 cx: &mut ViewContext<Workspace>,
790 ) -> Task<Result<()>> {
791 Self::close_items(workspace, pane, cx, move |view_id| {
792 view_id == item_id_to_close
793 })
794 }
795
796 pub fn close_items(
797 workspace: &mut Workspace,
798 pane: ViewHandle<Pane>,
799 cx: &mut ViewContext<Workspace>,
800 should_close: impl 'static + Fn(usize) -> bool,
801 ) -> Task<Result<()>> {
802 let project = workspace.project().clone();
803
804 // Find the items to close.
805 let mut items_to_close = Vec::new();
806 for item in &pane.read(cx).items {
807 if should_close(item.id()) {
808 items_to_close.push(item.boxed_clone());
809 }
810 }
811
812 // If a buffer is open both in a singleton editor and in a multibuffer, make sure
813 // to focus the singleton buffer when prompting to save that buffer, as opposed
814 // to focusing the multibuffer, because this gives the user a more clear idea
815 // of what content they would be saving.
816 items_to_close.sort_by_key(|item| !item.is_singleton(cx));
817
818 cx.spawn(|workspace, mut cx| async move {
819 let mut saved_project_items_ids = HashSet::default();
820 for item in items_to_close.clone() {
821 // Find the item's current index and its set of project item models. Avoid
822 // storing these in advance, in case they have changed since this task
823 // was started.
824 let (item_ix, mut project_item_ids) = pane.read_with(&cx, |pane, cx| {
825 (pane.index_for_item(&*item), item.project_item_model_ids(cx))
826 });
827 let item_ix = if let Some(ix) = item_ix {
828 ix
829 } else {
830 continue;
831 };
832
833 // Check if this view has any project items that are not open anywhere else
834 // in the workspace, AND that the user has not already been prompted to save.
835 // If there are any such project entries, prompt the user to save this item.
836 workspace.read_with(&cx, |workspace, cx| {
837 for item in workspace.items(cx) {
838 if !items_to_close
839 .iter()
840 .any(|item_to_close| item_to_close.id() == item.id())
841 {
842 let other_project_item_ids = item.project_item_model_ids(cx);
843 project_item_ids.retain(|id| !other_project_item_ids.contains(id));
844 }
845 }
846 });
847 let should_save = project_item_ids
848 .iter()
849 .any(|id| saved_project_items_ids.insert(*id));
850
851 if should_save
852 && !Self::save_item(project.clone(), &pane, item_ix, &*item, true, &mut cx)
853 .await?
854 {
855 break;
856 }
857
858 // Remove the item from the pane.
859 pane.update(&mut cx, |pane, cx| {
860 if let Some(item_ix) = pane.items.iter().position(|i| i.id() == item.id()) {
861 pane.remove_item(item_ix, false, cx);
862 }
863 });
864 }
865
866 pane.update(&mut cx, |_, cx| cx.notify());
867 Ok(())
868 })
869 }
870
871 fn remove_item(&mut self, item_index: usize, activate_pane: bool, cx: &mut ViewContext<Self>) {
872 self.activation_history
873 .retain(|&history_entry| history_entry != self.items[item_index].id());
874
875 if item_index == self.active_item_index {
876 let index_to_activate = self
877 .activation_history
878 .pop()
879 .and_then(|last_activated_item| {
880 self.items.iter().enumerate().find_map(|(index, item)| {
881 (item.id() == last_activated_item).then_some(index)
882 })
883 })
884 // We didn't have a valid activation history entry, so fallback
885 // to activating the item to the left
886 .unwrap_or_else(|| item_index.min(self.items.len()).saturating_sub(1));
887
888 self.activate_item(index_to_activate, activate_pane, activate_pane, cx);
889 }
890
891 let item = self.items.remove(item_index);
892
893 cx.emit(Event::RemoveItem { item_id: item.id() });
894 if self.items.is_empty() {
895 item.deactivated(cx);
896 self.update_toolbar(cx);
897 cx.emit(Event::Remove);
898 }
899
900 if item_index < self.active_item_index {
901 self.active_item_index -= 1;
902 }
903
904 self.nav_history
905 .borrow_mut()
906 .set_mode(NavigationMode::ClosingItem);
907 item.deactivated(cx);
908 self.nav_history
909 .borrow_mut()
910 .set_mode(NavigationMode::Normal);
911
912 if let Some(path) = item.project_path(cx) {
913 self.nav_history
914 .borrow_mut()
915 .paths_by_item
916 .insert(item.id(), path);
917 } else {
918 self.nav_history
919 .borrow_mut()
920 .paths_by_item
921 .remove(&item.id());
922 }
923
924 cx.notify();
925 }
926
927 pub async fn save_item(
928 project: ModelHandle<Project>,
929 pane: &ViewHandle<Pane>,
930 item_ix: usize,
931 item: &dyn ItemHandle,
932 should_prompt_for_save: bool,
933 cx: &mut AsyncAppContext,
934 ) -> Result<bool> {
935 const CONFLICT_MESSAGE: &str =
936 "This file has changed on disk since you started editing it. Do you want to overwrite it?";
937 const DIRTY_MESSAGE: &str = "This file contains unsaved edits. Do you want to save it?";
938
939 let (has_conflict, is_dirty, can_save, is_singleton) = cx.read(|cx| {
940 (
941 item.has_conflict(cx),
942 item.is_dirty(cx),
943 item.can_save(cx),
944 item.is_singleton(cx),
945 )
946 });
947
948 if has_conflict && can_save {
949 let mut answer = pane.update(cx, |pane, cx| {
950 pane.activate_item(item_ix, true, true, cx);
951 cx.prompt(
952 PromptLevel::Warning,
953 CONFLICT_MESSAGE,
954 &["Overwrite", "Discard", "Cancel"],
955 )
956 });
957 match answer.next().await {
958 Some(0) => cx.update(|cx| item.save(project, cx)).await?,
959 Some(1) => cx.update(|cx| item.reload(project, cx)).await?,
960 _ => return Ok(false),
961 }
962 } else if is_dirty && (can_save || is_singleton) {
963 let will_autosave = cx.read(|cx| {
964 matches!(
965 cx.global::<Settings>().autosave,
966 Autosave::OnFocusChange | Autosave::OnWindowChange
967 ) && Self::can_autosave_item(&*item, cx)
968 });
969 let should_save = if should_prompt_for_save && !will_autosave {
970 let mut answer = pane.update(cx, |pane, cx| {
971 pane.activate_item(item_ix, true, true, cx);
972 cx.prompt(
973 PromptLevel::Warning,
974 DIRTY_MESSAGE,
975 &["Save", "Don't Save", "Cancel"],
976 )
977 });
978 match answer.next().await {
979 Some(0) => true,
980 Some(1) => false,
981 _ => return Ok(false),
982 }
983 } else {
984 true
985 };
986
987 if should_save {
988 if can_save {
989 cx.update(|cx| item.save(project, cx)).await?;
990 } else if is_singleton {
991 let start_abs_path = project
992 .read_with(cx, |project, cx| {
993 let worktree = project.visible_worktrees(cx).next()?;
994 Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
995 })
996 .unwrap_or_else(|| Path::new("").into());
997
998 let mut abs_path = cx.update(|cx| cx.prompt_for_new_path(&start_abs_path));
999 if let Some(abs_path) = abs_path.next().await.flatten() {
1000 cx.update(|cx| item.save_as(project, abs_path, cx)).await?;
1001 } else {
1002 return Ok(false);
1003 }
1004 }
1005 }
1006 }
1007 Ok(true)
1008 }
1009
1010 fn can_autosave_item(item: &dyn ItemHandle, cx: &AppContext) -> bool {
1011 let is_deleted = item.project_entry_ids(cx).is_empty();
1012 item.is_dirty(cx) && !item.has_conflict(cx) && item.can_save(cx) && !is_deleted
1013 }
1014
1015 pub fn autosave_item(
1016 item: &dyn ItemHandle,
1017 project: ModelHandle<Project>,
1018 cx: &mut MutableAppContext,
1019 ) -> Task<Result<()>> {
1020 if Self::can_autosave_item(item, cx) {
1021 item.save(project, cx)
1022 } else {
1023 Task::ready(Ok(()))
1024 }
1025 }
1026
1027 pub fn focus_active_item(&mut self, cx: &mut ViewContext<Self>) {
1028 if let Some(active_item) = self.active_item() {
1029 cx.focus(active_item);
1030 }
1031 }
1032
1033 pub fn move_item(
1034 workspace: &mut Workspace,
1035 from: ViewHandle<Pane>,
1036 to: ViewHandle<Pane>,
1037 item_id_to_move: usize,
1038 destination_index: usize,
1039 cx: &mut ViewContext<Workspace>,
1040 ) {
1041 let item_to_move = from
1042 .read(cx)
1043 .items()
1044 .enumerate()
1045 .find(|(_, item_handle)| item_handle.id() == item_id_to_move);
1046
1047 if item_to_move.is_none() {
1048 log::warn!("Tried to move item handle which was not in `from` pane. Maybe tab was closed during drop");
1049 return;
1050 }
1051 let (item_ix, item_handle) = item_to_move.unwrap();
1052 let item_handle = item_handle.clone();
1053
1054 if from != to {
1055 // Close item from previous pane
1056 from.update(cx, |from, cx| {
1057 from.remove_item(item_ix, false, cx);
1058 });
1059 }
1060
1061 // This automatically removes duplicate items in the pane
1062 Pane::add_item(
1063 workspace,
1064 &to,
1065 item_handle,
1066 true,
1067 true,
1068 Some(destination_index),
1069 cx,
1070 );
1071
1072 cx.focus(to);
1073 }
1074
1075 pub fn split(&mut self, direction: SplitDirection, cx: &mut ViewContext<Self>) {
1076 cx.emit(Event::Split(direction));
1077 }
1078
1079 fn deploy_split_menu(&mut self, action: &DeploySplitMenu, cx: &mut ViewContext<Self>) {
1080 self.tab_bar_context_menu.update(cx, |menu, cx| {
1081 menu.show(
1082 action.position,
1083 AnchorCorner::TopRight,
1084 vec![
1085 ContextMenuItem::item("Split Right", SplitRight),
1086 ContextMenuItem::item("Split Left", SplitLeft),
1087 ContextMenuItem::item("Split Up", SplitUp),
1088 ContextMenuItem::item("Split Down", SplitDown),
1089 ],
1090 cx,
1091 );
1092 });
1093 }
1094
1095 fn deploy_dock_menu(&mut self, action: &DeployDockMenu, cx: &mut ViewContext<Self>) {
1096 self.tab_bar_context_menu.update(cx, |menu, cx| {
1097 menu.show(
1098 action.position,
1099 AnchorCorner::TopRight,
1100 vec![
1101 ContextMenuItem::item("Anchor Dock Right", AnchorDockRight),
1102 ContextMenuItem::item("Anchor Dock Bottom", AnchorDockBottom),
1103 ContextMenuItem::item("Expand Dock", ExpandDock),
1104 ],
1105 cx,
1106 );
1107 });
1108 }
1109
1110 fn deploy_new_menu(&mut self, action: &DeployNewMenu, cx: &mut ViewContext<Self>) {
1111 self.tab_bar_context_menu.update(cx, |menu, cx| {
1112 menu.show(
1113 action.position,
1114 AnchorCorner::TopRight,
1115 vec![
1116 ContextMenuItem::item("New File", NewFile),
1117 ContextMenuItem::item("New Terminal", NewTerminal),
1118 ContextMenuItem::item("New Search", NewSearch),
1119 ],
1120 cx,
1121 );
1122 });
1123 }
1124
1125 pub fn toolbar(&self) -> &ViewHandle<Toolbar> {
1126 &self.toolbar
1127 }
1128
1129 fn update_toolbar(&mut self, cx: &mut ViewContext<Self>) {
1130 let active_item = self
1131 .items
1132 .get(self.active_item_index)
1133 .map(|item| item.as_ref());
1134 self.toolbar.update(cx, |toolbar, cx| {
1135 toolbar.set_active_pane_item(active_item, cx);
1136 });
1137 }
1138
1139 fn render_tabs(&mut self, cx: &mut RenderContext<Self>) -> impl Element {
1140 let theme = cx.global::<Settings>().theme.clone();
1141
1142 let pane = cx.handle();
1143 let autoscroll = if mem::take(&mut self.autoscroll) {
1144 Some(self.active_item_index)
1145 } else {
1146 None
1147 };
1148
1149 let pane_active = self.is_active;
1150
1151 enum Tabs {}
1152 let mut row = Flex::row().scrollable::<Tabs, _>(1, autoscroll, cx);
1153 for (ix, (item, detail)) in self
1154 .items
1155 .iter()
1156 .cloned()
1157 .zip(self.tab_details(cx))
1158 .enumerate()
1159 {
1160 let detail = if detail == 0 { None } else { Some(detail) };
1161 let tab_active = ix == self.active_item_index;
1162
1163 row.add_child({
1164 enum TabDragReceiver {}
1165 let mut receiver =
1166 dragged_item_receiver::<TabDragReceiver, _>(ix, ix, true, None, cx, {
1167 let item = item.clone();
1168 let pane = pane.clone();
1169 let detail = detail.clone();
1170
1171 let theme = cx.global::<Settings>().theme.clone();
1172
1173 move |mouse_state, cx| {
1174 let tab_style =
1175 theme.workspace.tab_bar.tab_style(pane_active, tab_active);
1176 let hovered = mouse_state.hovered();
1177
1178 enum Tab {}
1179 MouseEventHandler::<Tab>::new(ix, cx, |_, cx| {
1180 Self::render_tab(
1181 &item,
1182 pane.clone(),
1183 ix == 0,
1184 detail,
1185 hovered,
1186 tab_style,
1187 cx,
1188 )
1189 })
1190 .on_down(MouseButton::Left, move |_, cx| {
1191 cx.dispatch_action(ActivateItem(ix));
1192 })
1193 .on_click(MouseButton::Middle, {
1194 let item = item.clone();
1195 move |_, cx: &mut EventContext| {
1196 cx.dispatch_action(CloseItem {
1197 item_id: item.id(),
1198 pane: pane.clone(),
1199 })
1200 }
1201 })
1202 .boxed()
1203 }
1204 });
1205
1206 if !pane_active || !tab_active {
1207 receiver = receiver.with_cursor_style(CursorStyle::PointingHand);
1208 }
1209
1210 receiver
1211 .as_draggable(
1212 DraggedItem {
1213 item,
1214 pane: pane.clone(),
1215 },
1216 {
1217 let theme = cx.global::<Settings>().theme.clone();
1218
1219 let detail = detail.clone();
1220 move |dragged_item, cx: &mut RenderContext<Workspace>| {
1221 let tab_style = &theme.workspace.tab_bar.dragged_tab;
1222 Self::render_tab(
1223 &dragged_item.item,
1224 dragged_item.pane.clone(),
1225 false,
1226 detail,
1227 false,
1228 &tab_style,
1229 cx,
1230 )
1231 }
1232 },
1233 )
1234 .boxed()
1235 })
1236 }
1237
1238 // Use the inactive tab style along with the current pane's active status to decide how to render
1239 // the filler
1240 let filler_index = self.items.len();
1241 let filler_style = theme.workspace.tab_bar.tab_style(pane_active, false);
1242 enum Filler {}
1243 row.add_child(
1244 dragged_item_receiver::<Filler, _>(0, filler_index, true, None, cx, |_, _| {
1245 Empty::new()
1246 .contained()
1247 .with_style(filler_style.container)
1248 .with_border(filler_style.container.border)
1249 .boxed()
1250 })
1251 .flex(1., true)
1252 .named("filler"),
1253 );
1254
1255 row
1256 }
1257
1258 fn tab_details(&self, cx: &AppContext) -> Vec<usize> {
1259 let mut tab_details = (0..self.items.len()).map(|_| 0).collect::<Vec<_>>();
1260
1261 let mut tab_descriptions = HashMap::default();
1262 let mut done = false;
1263 while !done {
1264 done = true;
1265
1266 // Store item indices by their tab description.
1267 for (ix, (item, detail)) in self.items.iter().zip(&tab_details).enumerate() {
1268 if let Some(description) = item.tab_description(*detail, cx) {
1269 if *detail == 0
1270 || Some(&description) != item.tab_description(detail - 1, cx).as_ref()
1271 {
1272 tab_descriptions
1273 .entry(description)
1274 .or_insert(Vec::new())
1275 .push(ix);
1276 }
1277 }
1278 }
1279
1280 // If two or more items have the same tab description, increase their level
1281 // of detail and try again.
1282 for (_, item_ixs) in tab_descriptions.drain() {
1283 if item_ixs.len() > 1 {
1284 done = false;
1285 for ix in item_ixs {
1286 tab_details[ix] += 1;
1287 }
1288 }
1289 }
1290 }
1291
1292 tab_details
1293 }
1294
1295 fn render_tab<V: View>(
1296 item: &Box<dyn ItemHandle>,
1297 pane: WeakViewHandle<Pane>,
1298 first: bool,
1299 detail: Option<usize>,
1300 hovered: bool,
1301 tab_style: &theme::Tab,
1302 cx: &mut RenderContext<V>,
1303 ) -> ElementBox {
1304 let title = item.tab_content(detail, &tab_style, cx);
1305 let mut container = tab_style.container.clone();
1306 if first {
1307 container.border.left = false;
1308 }
1309
1310 Flex::row()
1311 .with_child(
1312 Align::new({
1313 let diameter = 7.0;
1314 let icon_color = if item.has_conflict(cx) {
1315 Some(tab_style.icon_conflict)
1316 } else if item.is_dirty(cx) {
1317 Some(tab_style.icon_dirty)
1318 } else {
1319 None
1320 };
1321
1322 ConstrainedBox::new(
1323 Canvas::new(move |bounds, _, cx| {
1324 if let Some(color) = icon_color {
1325 let square = RectF::new(bounds.origin(), vec2f(diameter, diameter));
1326 cx.scene.push_quad(Quad {
1327 bounds: square,
1328 background: Some(color),
1329 border: Default::default(),
1330 corner_radius: diameter / 2.,
1331 });
1332 }
1333 })
1334 .boxed(),
1335 )
1336 .with_width(diameter)
1337 .with_height(diameter)
1338 .boxed()
1339 })
1340 .boxed(),
1341 )
1342 .with_child(
1343 Container::new(Align::new(title).boxed())
1344 .with_style(ContainerStyle {
1345 margin: Margin {
1346 left: tab_style.spacing,
1347 right: tab_style.spacing,
1348 ..Default::default()
1349 },
1350 ..Default::default()
1351 })
1352 .boxed(),
1353 )
1354 .with_child(
1355 Align::new(
1356 ConstrainedBox::new(if hovered {
1357 let item_id = item.id();
1358 enum TabCloseButton {}
1359 let icon = Svg::new("icons/x_mark_8.svg");
1360 MouseEventHandler::<TabCloseButton>::new(item_id, cx, |mouse_state, _| {
1361 if mouse_state.hovered() {
1362 icon.with_color(tab_style.icon_close_active).boxed()
1363 } else {
1364 icon.with_color(tab_style.icon_close).boxed()
1365 }
1366 })
1367 .with_padding(Padding::uniform(4.))
1368 .with_cursor_style(CursorStyle::PointingHand)
1369 .on_click(MouseButton::Left, {
1370 let pane = pane.clone();
1371 move |_, cx| {
1372 cx.dispatch_action(CloseItem {
1373 item_id,
1374 pane: pane.clone(),
1375 })
1376 }
1377 })
1378 .named("close-tab-icon")
1379 } else {
1380 Empty::new().boxed()
1381 })
1382 .with_width(tab_style.close_icon_width)
1383 .boxed(),
1384 )
1385 .boxed(),
1386 )
1387 .contained()
1388 .with_style(container)
1389 .constrained()
1390 .with_height(tab_style.height)
1391 .boxed()
1392 }
1393
1394 fn render_tab_bar_buttons(
1395 &mut self,
1396 theme: &Theme,
1397 cx: &mut RenderContext<Self>,
1398 ) -> ElementBox {
1399 Flex::row()
1400 // New menu
1401 .with_child(tab_bar_button(0, "icons/plus_12.svg", cx, |position| {
1402 DeployNewMenu { position }
1403 }))
1404 .with_child(
1405 self.docked
1406 .map(|anchor| {
1407 // Add the dock menu button if this pane is a dock
1408 let dock_icon = icon_for_dock_anchor(anchor);
1409
1410 tab_bar_button(1, dock_icon, cx, |position| DeployDockMenu { position })
1411 })
1412 .unwrap_or_else(|| {
1413 // Add the split menu if this pane is not a dock
1414 tab_bar_button(2, "icons/split_12.svg", cx, |position| DeploySplitMenu {
1415 position,
1416 })
1417 }),
1418 )
1419 // Add the close dock button if this pane is a dock
1420 .with_children(
1421 self.docked
1422 .map(|_| tab_bar_button(3, "icons/x_mark_8.svg", cx, |_| HideDock)),
1423 )
1424 .contained()
1425 .with_style(theme.workspace.tab_bar.pane_button_container)
1426 .flex(1., false)
1427 .boxed()
1428 }
1429
1430 fn render_blank_pane(&mut self, theme: &Theme, cx: &mut RenderContext<Self>) -> ElementBox {
1431 let background = theme.workspace.background;
1432 let theme = &theme.workspace.blank_pane;
1433 Stack::new()
1434 .with_children([
1435 Empty::new()
1436 .contained()
1437 .with_background_color(background)
1438 .boxed(),
1439 Flex::column()
1440 .align_children_center()
1441 .with_children([
1442 Stack::new()
1443 .with_children([
1444 theme::ui::icon(&theme.logo_shadow).aligned().boxed(),
1445 theme::ui::icon(&theme.logo).aligned().boxed(),
1446 ])
1447 .contained()
1448 .with_style(theme.logo_container)
1449 .boxed(),
1450 Flex::column()
1451 .with_children({
1452 enum KeyboardHint {}
1453 let keyboard_hint = &theme.keyboard_hint;
1454 let workspace_id = self.workspace_id;
1455 (self.background_actions)().into_iter().enumerate().map(
1456 move |(idx, (text, action))| {
1457 let hint_action = action.boxed_clone();
1458 MouseEventHandler::<KeyboardHint>::new(
1459 idx,
1460 cx,
1461 move |state, cx| {
1462 let style = keyboard_hint.style_for(state, false);
1463 theme::ui::keystroke_label_for(
1464 cx.window_id(),
1465 workspace_id,
1466 text,
1467 &style,
1468 &style,
1469 hint_action,
1470 )
1471 .boxed()
1472 },
1473 )
1474 .on_click(MouseButton::Left, move |_, cx| {
1475 cx.dispatch_any_action(action.boxed_clone())
1476 })
1477 .with_cursor_style(CursorStyle::PointingHand)
1478 .boxed()
1479 },
1480 )
1481 })
1482 .contained()
1483 .with_style(theme.keyboard_hints)
1484 .constrained()
1485 .with_max_width(theme.keyboard_hint_width)
1486 .aligned()
1487 .boxed(),
1488 ])
1489 .aligned()
1490 .boxed(),
1491 ])
1492 .boxed()
1493 }
1494}
1495
1496impl Entity for Pane {
1497 type Event = Event;
1498}
1499
1500impl View for Pane {
1501 fn ui_name() -> &'static str {
1502 "Pane"
1503 }
1504
1505 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
1506 let this = cx.handle();
1507
1508 enum MouseNavigationHandler {}
1509
1510 Stack::new()
1511 .with_child(
1512 MouseEventHandler::<MouseNavigationHandler>::new(0, cx, |_, cx| {
1513 let active_item_index = self.active_item_index;
1514
1515 if let Some(active_item) = self.active_item() {
1516 Flex::column()
1517 .with_child({
1518 let theme = cx.global::<Settings>().theme.clone();
1519
1520 let mut stack = Stack::new();
1521
1522 enum TabBarEventHandler {}
1523 stack.add_child(
1524 MouseEventHandler::<TabBarEventHandler>::new(0, cx, |_, _| {
1525 Empty::new()
1526 .contained()
1527 .with_style(theme.workspace.tab_bar.container)
1528 .boxed()
1529 })
1530 .on_down(MouseButton::Left, move |_, cx| {
1531 cx.dispatch_action(ActivateItem(active_item_index));
1532 })
1533 .boxed(),
1534 );
1535
1536 let mut tab_row = Flex::row()
1537 .with_child(self.render_tabs(cx).flex(1., true).named("tabs"));
1538
1539 if self.is_active {
1540 tab_row.add_child(self.render_tab_bar_buttons(&theme, cx))
1541 }
1542
1543 stack.add_child(tab_row.boxed());
1544 stack
1545 .constrained()
1546 .with_height(theme.workspace.tab_bar.height)
1547 .flex(1., false)
1548 .named("tab bar")
1549 })
1550 .with_child({
1551 enum PaneContentTabDropTarget {}
1552 dragged_item_receiver::<PaneContentTabDropTarget, _>(
1553 0,
1554 self.active_item_index + 1,
1555 false,
1556 if self.docked.is_some() {
1557 None
1558 } else {
1559 Some(100.)
1560 },
1561 cx,
1562 {
1563 let toolbar = self.toolbar.clone();
1564 let toolbar_hidden = toolbar.read(cx).hidden();
1565 move |_, cx| {
1566 Flex::column()
1567 .with_children((!toolbar_hidden).then(|| {
1568 ChildView::new(&toolbar, cx).expanded().boxed()
1569 }))
1570 .with_child(
1571 ChildView::new(active_item, cx)
1572 .flex(1., true)
1573 .boxed(),
1574 )
1575 .boxed()
1576 }
1577 },
1578 )
1579 .flex(1., true)
1580 .boxed()
1581 })
1582 .boxed()
1583 } else {
1584 enum EmptyPane {}
1585 let theme = cx.global::<Settings>().theme.clone();
1586
1587 dragged_item_receiver::<EmptyPane, _>(0, 0, false, None, cx, |_, cx| {
1588 self.render_blank_pane(&theme, cx)
1589 })
1590 .on_down(MouseButton::Left, |_, cx| {
1591 cx.focus_parent_view();
1592 })
1593 .boxed()
1594 }
1595 })
1596 .on_down(MouseButton::Navigate(NavigationDirection::Back), {
1597 let this = this.clone();
1598 move |_, cx| {
1599 cx.dispatch_action(GoBack {
1600 pane: Some(this.clone()),
1601 });
1602 }
1603 })
1604 .on_down(MouseButton::Navigate(NavigationDirection::Forward), {
1605 let this = this.clone();
1606 move |_, cx| {
1607 cx.dispatch_action(GoForward {
1608 pane: Some(this.clone()),
1609 })
1610 }
1611 })
1612 .boxed(),
1613 )
1614 .with_child(ChildView::new(&self.tab_bar_context_menu, cx).boxed())
1615 .named("pane")
1616 }
1617
1618 fn focus_in(&mut self, focused: AnyViewHandle, cx: &mut ViewContext<Self>) {
1619 if let Some(active_item) = self.active_item() {
1620 if cx.is_self_focused() {
1621 // Pane was focused directly. We need to either focus a view inside the active item,
1622 // or focus the active item itself
1623 if let Some(weak_last_focused_view) =
1624 self.last_focused_view_by_item.get(&active_item.id())
1625 {
1626 if let Some(last_focused_view) = weak_last_focused_view.upgrade(cx) {
1627 cx.focus(last_focused_view);
1628 return;
1629 } else {
1630 self.last_focused_view_by_item.remove(&active_item.id());
1631 }
1632 }
1633
1634 cx.focus(active_item);
1635 } else if focused != self.tab_bar_context_menu {
1636 self.last_focused_view_by_item
1637 .insert(active_item.id(), focused.downgrade());
1638 }
1639 }
1640 }
1641
1642 fn keymap_context(&self, _: &AppContext) -> KeymapContext {
1643 let mut keymap = Self::default_keymap_context();
1644 if self.docked.is_some() {
1645 keymap.add_identifier("docked");
1646 }
1647 keymap
1648 }
1649}
1650
1651fn tab_bar_button<A: Action>(
1652 index: usize,
1653 icon: &'static str,
1654 cx: &mut RenderContext<Pane>,
1655 action_builder: impl 'static + Fn(Vector2F) -> A,
1656) -> ElementBox {
1657 enum TabBarButton {}
1658
1659 MouseEventHandler::<TabBarButton>::new(index, cx, |mouse_state, cx| {
1660 let theme = &cx.global::<Settings>().theme.workspace.tab_bar;
1661 let style = theme.pane_button.style_for(mouse_state, false);
1662 Svg::new(icon)
1663 .with_color(style.color)
1664 .constrained()
1665 .with_width(style.icon_width)
1666 .aligned()
1667 .constrained()
1668 .with_width(style.button_width)
1669 .with_height(style.button_width)
1670 // .aligned()
1671 .boxed()
1672 })
1673 .with_cursor_style(CursorStyle::PointingHand)
1674 .on_click(MouseButton::Left, move |e, cx| {
1675 cx.dispatch_action(action_builder(e.region.lower_right()));
1676 })
1677 .flex(1., false)
1678 .boxed()
1679}
1680
1681impl ItemNavHistory {
1682 pub fn push<D: 'static + Any>(&self, data: Option<D>, cx: &mut MutableAppContext) {
1683 self.history.borrow_mut().push(data, self.item.clone(), cx);
1684 }
1685
1686 pub fn pop_backward(&self, cx: &mut MutableAppContext) -> Option<NavigationEntry> {
1687 self.history.borrow_mut().pop(NavigationMode::GoingBack, cx)
1688 }
1689
1690 pub fn pop_forward(&self, cx: &mut MutableAppContext) -> Option<NavigationEntry> {
1691 self.history
1692 .borrow_mut()
1693 .pop(NavigationMode::GoingForward, cx)
1694 }
1695}
1696
1697impl NavHistory {
1698 fn set_mode(&mut self, mode: NavigationMode) {
1699 self.mode = mode;
1700 }
1701
1702 fn disable(&mut self) {
1703 self.mode = NavigationMode::Disabled;
1704 }
1705
1706 fn enable(&mut self) {
1707 self.mode = NavigationMode::Normal;
1708 }
1709
1710 fn pop(&mut self, mode: NavigationMode, cx: &mut MutableAppContext) -> Option<NavigationEntry> {
1711 let entry = match mode {
1712 NavigationMode::Normal | NavigationMode::Disabled | NavigationMode::ClosingItem => {
1713 return None
1714 }
1715 NavigationMode::GoingBack => &mut self.backward_stack,
1716 NavigationMode::GoingForward => &mut self.forward_stack,
1717 NavigationMode::ReopeningClosedItem => &mut self.closed_stack,
1718 }
1719 .pop_back();
1720 if entry.is_some() {
1721 self.did_update(cx);
1722 }
1723 entry
1724 }
1725
1726 fn push<D: 'static + Any>(
1727 &mut self,
1728 data: Option<D>,
1729 item: Rc<dyn WeakItemHandle>,
1730 cx: &mut MutableAppContext,
1731 ) {
1732 match self.mode {
1733 NavigationMode::Disabled => {}
1734 NavigationMode::Normal | NavigationMode::ReopeningClosedItem => {
1735 if self.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
1736 self.backward_stack.pop_front();
1737 }
1738 self.backward_stack.push_back(NavigationEntry {
1739 item,
1740 data: data.map(|data| Box::new(data) as Box<dyn Any>),
1741 });
1742 self.forward_stack.clear();
1743 }
1744 NavigationMode::GoingBack => {
1745 if self.forward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
1746 self.forward_stack.pop_front();
1747 }
1748 self.forward_stack.push_back(NavigationEntry {
1749 item,
1750 data: data.map(|data| Box::new(data) as Box<dyn Any>),
1751 });
1752 }
1753 NavigationMode::GoingForward => {
1754 if self.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
1755 self.backward_stack.pop_front();
1756 }
1757 self.backward_stack.push_back(NavigationEntry {
1758 item,
1759 data: data.map(|data| Box::new(data) as Box<dyn Any>),
1760 });
1761 }
1762 NavigationMode::ClosingItem => {
1763 if self.closed_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
1764 self.closed_stack.pop_front();
1765 }
1766 self.closed_stack.push_back(NavigationEntry {
1767 item,
1768 data: data.map(|data| Box::new(data) as Box<dyn Any>),
1769 });
1770 }
1771 }
1772 self.did_update(cx);
1773 }
1774
1775 fn did_update(&self, cx: &mut MutableAppContext) {
1776 if let Some(pane) = self.pane.upgrade(cx) {
1777 cx.defer(move |cx| pane.update(cx, |pane, cx| pane.history_updated(cx)));
1778 }
1779 }
1780}
1781
1782pub struct PaneBackdrop {
1783 child_view: usize,
1784 child: ElementBox,
1785}
1786impl PaneBackdrop {
1787 pub fn new(pane_item_view: usize, child: ElementBox) -> Self {
1788 PaneBackdrop {
1789 child,
1790 child_view: pane_item_view,
1791 }
1792 }
1793}
1794
1795impl Element for PaneBackdrop {
1796 type LayoutState = ();
1797
1798 type PaintState = ();
1799
1800 fn layout(
1801 &mut self,
1802 constraint: gpui::SizeConstraint,
1803 cx: &mut gpui::LayoutContext,
1804 ) -> (Vector2F, Self::LayoutState) {
1805 let size = self.child.layout(constraint, cx);
1806 (size, ())
1807 }
1808
1809 fn paint(
1810 &mut self,
1811 bounds: RectF,
1812 visible_bounds: RectF,
1813 _: &mut Self::LayoutState,
1814 cx: &mut gpui::PaintContext,
1815 ) -> Self::PaintState {
1816 let background = cx.global::<Settings>().theme.editor.background;
1817
1818 let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
1819
1820 cx.scene.push_quad(gpui::Quad {
1821 bounds: RectF::new(bounds.origin(), bounds.size()),
1822 background: Some(background),
1823 ..Default::default()
1824 });
1825
1826 let child_view_id = self.child_view;
1827 cx.scene.push_mouse_region(
1828 MouseRegion::new::<Self>(child_view_id, 0, visible_bounds).on_down(
1829 gpui::MouseButton::Left,
1830 move |_, cx| {
1831 let window_id = cx.window_id;
1832 cx.focus(window_id, Some(child_view_id))
1833 },
1834 ),
1835 );
1836
1837 cx.paint_layer(Some(bounds), |cx| {
1838 self.child.paint(bounds.origin(), visible_bounds, cx)
1839 })
1840 }
1841
1842 fn rect_for_text_range(
1843 &self,
1844 range_utf16: std::ops::Range<usize>,
1845 _bounds: RectF,
1846 _visible_bounds: RectF,
1847 _layout: &Self::LayoutState,
1848 _paint: &Self::PaintState,
1849 cx: &gpui::MeasurementContext,
1850 ) -> Option<RectF> {
1851 self.child.rect_for_text_range(range_utf16, cx)
1852 }
1853
1854 fn debug(
1855 &self,
1856 _bounds: RectF,
1857 _layout: &Self::LayoutState,
1858 _paint: &Self::PaintState,
1859 cx: &gpui::DebugContext,
1860 ) -> serde_json::Value {
1861 gpui::json::json!({
1862 "type": "Pane Back Drop",
1863 "view": self.child_view,
1864 "child": self.child.debug(cx),
1865 })
1866 }
1867}
1868
1869#[cfg(test)]
1870mod tests {
1871 use std::sync::Arc;
1872
1873 use super::*;
1874 use crate::item::test::{TestItem, TestProjectItem};
1875 use gpui::{executor::Deterministic, TestAppContext};
1876 use project::FakeFs;
1877
1878 #[gpui::test]
1879 async fn test_add_item_with_new_item(cx: &mut TestAppContext) {
1880 cx.foreground().forbid_parking();
1881 Settings::test_async(cx);
1882 let fs = FakeFs::new(cx.background());
1883
1884 let project = Project::test(fs, None, cx).await;
1885 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
1886 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
1887
1888 // 1. Add with a destination index
1889 // a. Add before the active item
1890 set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
1891 workspace.update(cx, |workspace, cx| {
1892 Pane::add_item(
1893 workspace,
1894 &pane,
1895 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
1896 false,
1897 false,
1898 Some(0),
1899 cx,
1900 );
1901 });
1902 assert_item_labels(&pane, ["D*", "A", "B", "C"], cx);
1903
1904 // b. Add after the active item
1905 set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
1906 workspace.update(cx, |workspace, cx| {
1907 Pane::add_item(
1908 workspace,
1909 &pane,
1910 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
1911 false,
1912 false,
1913 Some(2),
1914 cx,
1915 );
1916 });
1917 assert_item_labels(&pane, ["A", "B", "D*", "C"], cx);
1918
1919 // c. Add at the end of the item list (including off the length)
1920 set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
1921 workspace.update(cx, |workspace, cx| {
1922 Pane::add_item(
1923 workspace,
1924 &pane,
1925 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
1926 false,
1927 false,
1928 Some(5),
1929 cx,
1930 );
1931 });
1932 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
1933
1934 // 2. Add without a destination index
1935 // a. Add with active item at the start of the item list
1936 set_labeled_items(&workspace, &pane, ["A*", "B", "C"], cx);
1937 workspace.update(cx, |workspace, cx| {
1938 Pane::add_item(
1939 workspace,
1940 &pane,
1941 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
1942 false,
1943 false,
1944 None,
1945 cx,
1946 );
1947 });
1948 set_labeled_items(&workspace, &pane, ["A", "D*", "B", "C"], cx);
1949
1950 // b. Add with active item at the end of the item list
1951 set_labeled_items(&workspace, &pane, ["A", "B", "C*"], cx);
1952 workspace.update(cx, |workspace, cx| {
1953 Pane::add_item(
1954 workspace,
1955 &pane,
1956 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
1957 false,
1958 false,
1959 None,
1960 cx,
1961 );
1962 });
1963 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
1964 }
1965
1966 #[gpui::test]
1967 async fn test_add_item_with_existing_item(cx: &mut TestAppContext) {
1968 cx.foreground().forbid_parking();
1969 Settings::test_async(cx);
1970 let fs = FakeFs::new(cx.background());
1971
1972 let project = Project::test(fs, None, cx).await;
1973 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
1974 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
1975
1976 // 1. Add with a destination index
1977 // 1a. Add before the active item
1978 let [_, _, _, d] = set_labeled_items(&workspace, &pane, ["A", "B*", "C", "D"], cx);
1979 workspace.update(cx, |workspace, cx| {
1980 Pane::add_item(workspace, &pane, d, false, false, Some(0), cx);
1981 });
1982 assert_item_labels(&pane, ["D*", "A", "B", "C"], cx);
1983
1984 // 1b. Add after the active item
1985 let [_, _, _, d] = set_labeled_items(&workspace, &pane, ["A", "B*", "C", "D"], cx);
1986 workspace.update(cx, |workspace, cx| {
1987 Pane::add_item(workspace, &pane, d, false, false, Some(2), cx);
1988 });
1989 assert_item_labels(&pane, ["A", "B", "D*", "C"], cx);
1990
1991 // 1c. Add at the end of the item list (including off the length)
1992 let [a, _, _, _] = set_labeled_items(&workspace, &pane, ["A", "B*", "C", "D"], cx);
1993 workspace.update(cx, |workspace, cx| {
1994 Pane::add_item(workspace, &pane, a, false, false, Some(5), cx);
1995 });
1996 assert_item_labels(&pane, ["B", "C", "D", "A*"], cx);
1997
1998 // 1d. Add same item to active index
1999 let [_, b, _] = set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
2000 workspace.update(cx, |workspace, cx| {
2001 Pane::add_item(workspace, &pane, b, false, false, Some(1), cx);
2002 });
2003 assert_item_labels(&pane, ["A", "B*", "C"], cx);
2004
2005 // 1e. Add item to index after same item in last position
2006 let [_, _, c] = set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
2007 workspace.update(cx, |workspace, cx| {
2008 Pane::add_item(workspace, &pane, c, false, false, Some(2), cx);
2009 });
2010 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2011
2012 // 2. Add without a destination index
2013 // 2a. Add with active item at the start of the item list
2014 let [_, _, _, d] = set_labeled_items(&workspace, &pane, ["A*", "B", "C", "D"], cx);
2015 workspace.update(cx, |workspace, cx| {
2016 Pane::add_item(workspace, &pane, d, false, false, None, cx);
2017 });
2018 assert_item_labels(&pane, ["A", "D*", "B", "C"], cx);
2019
2020 // 2b. Add with active item at the end of the item list
2021 let [a, _, _, _] = set_labeled_items(&workspace, &pane, ["A", "B", "C", "D*"], cx);
2022 workspace.update(cx, |workspace, cx| {
2023 Pane::add_item(workspace, &pane, a, false, false, None, cx);
2024 });
2025 assert_item_labels(&pane, ["B", "C", "D", "A*"], cx);
2026
2027 // 2c. Add active item to active item at end of list
2028 let [_, _, c] = set_labeled_items(&workspace, &pane, ["A", "B", "C*"], cx);
2029 workspace.update(cx, |workspace, cx| {
2030 Pane::add_item(workspace, &pane, c, false, false, None, cx);
2031 });
2032 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2033
2034 // 2d. Add active item to active item at start of list
2035 let [a, _, _] = set_labeled_items(&workspace, &pane, ["A*", "B", "C"], cx);
2036 workspace.update(cx, |workspace, cx| {
2037 Pane::add_item(workspace, &pane, a, false, false, None, cx);
2038 });
2039 assert_item_labels(&pane, ["A*", "B", "C"], cx);
2040 }
2041
2042 #[gpui::test]
2043 async fn test_add_item_with_same_project_entries(cx: &mut TestAppContext) {
2044 cx.foreground().forbid_parking();
2045 Settings::test_async(cx);
2046 let fs = FakeFs::new(cx.background());
2047
2048 let project = Project::test(fs, None, cx).await;
2049 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2050 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2051
2052 // singleton view
2053 workspace.update(cx, |workspace, cx| {
2054 let item = TestItem::new()
2055 .with_singleton(true)
2056 .with_label("buffer 1")
2057 .with_project_items(&[TestProjectItem::new(1, "one.txt", cx)]);
2058
2059 Pane::add_item(
2060 workspace,
2061 &pane,
2062 Box::new(cx.add_view(|_| item)),
2063 false,
2064 false,
2065 None,
2066 cx,
2067 );
2068 });
2069 assert_item_labels(&pane, ["buffer 1*"], cx);
2070
2071 // new singleton view with the same project entry
2072 workspace.update(cx, |workspace, cx| {
2073 let item = TestItem::new()
2074 .with_singleton(true)
2075 .with_label("buffer 1")
2076 .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)]);
2077
2078 Pane::add_item(
2079 workspace,
2080 &pane,
2081 Box::new(cx.add_view(|_| item)),
2082 false,
2083 false,
2084 None,
2085 cx,
2086 );
2087 });
2088 assert_item_labels(&pane, ["buffer 1*"], cx);
2089
2090 // new singleton view with different project entry
2091 workspace.update(cx, |workspace, cx| {
2092 let item = TestItem::new()
2093 .with_singleton(true)
2094 .with_label("buffer 2")
2095 .with_project_items(&[TestProjectItem::new(2, "2.txt", cx)]);
2096
2097 Pane::add_item(
2098 workspace,
2099 &pane,
2100 Box::new(cx.add_view(|_| item)),
2101 false,
2102 false,
2103 None,
2104 cx,
2105 );
2106 });
2107 assert_item_labels(&pane, ["buffer 1", "buffer 2*"], cx);
2108
2109 // new multibuffer view with the same project entry
2110 workspace.update(cx, |workspace, cx| {
2111 let item = TestItem::new()
2112 .with_singleton(false)
2113 .with_label("multibuffer 1")
2114 .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)]);
2115
2116 Pane::add_item(
2117 workspace,
2118 &pane,
2119 Box::new(cx.add_view(|_| item)),
2120 false,
2121 false,
2122 None,
2123 cx,
2124 );
2125 });
2126 assert_item_labels(&pane, ["buffer 1", "buffer 2", "multibuffer 1*"], cx);
2127
2128 // another multibuffer view with the same project entry
2129 workspace.update(cx, |workspace, cx| {
2130 let item = TestItem::new()
2131 .with_singleton(false)
2132 .with_label("multibuffer 1b")
2133 .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)]);
2134
2135 Pane::add_item(
2136 workspace,
2137 &pane,
2138 Box::new(cx.add_view(|_| item)),
2139 false,
2140 false,
2141 None,
2142 cx,
2143 );
2144 });
2145 assert_item_labels(
2146 &pane,
2147 ["buffer 1", "buffer 2", "multibuffer 1", "multibuffer 1b*"],
2148 cx,
2149 );
2150 }
2151
2152 #[gpui::test]
2153 async fn test_remove_item_ordering(deterministic: Arc<Deterministic>, cx: &mut TestAppContext) {
2154 Settings::test_async(cx);
2155 let fs = FakeFs::new(cx.background());
2156
2157 let project = Project::test(fs, None, cx).await;
2158 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2159 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2160
2161 add_labled_item(&workspace, &pane, "A", cx);
2162 add_labled_item(&workspace, &pane, "B", cx);
2163 add_labled_item(&workspace, &pane, "C", cx);
2164 add_labled_item(&workspace, &pane, "D", cx);
2165 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2166
2167 pane.update(cx, |pane, cx| pane.activate_item(1, false, false, cx));
2168 add_labled_item(&workspace, &pane, "1", cx);
2169 assert_item_labels(&pane, ["A", "B", "1*", "C", "D"], cx);
2170
2171 workspace.update(cx, |workspace, cx| {
2172 Pane::close_active_item(workspace, &CloseActiveItem, cx);
2173 });
2174 deterministic.run_until_parked();
2175 assert_item_labels(&pane, ["A", "B*", "C", "D"], cx);
2176
2177 pane.update(cx, |pane, cx| pane.activate_item(3, false, false, cx));
2178 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2179
2180 workspace.update(cx, |workspace, cx| {
2181 Pane::close_active_item(workspace, &CloseActiveItem, cx);
2182 });
2183 deterministic.run_until_parked();
2184 assert_item_labels(&pane, ["A", "B*", "C"], cx);
2185
2186 workspace.update(cx, |workspace, cx| {
2187 Pane::close_active_item(workspace, &CloseActiveItem, cx);
2188 });
2189 deterministic.run_until_parked();
2190 assert_item_labels(&pane, ["A", "C*"], cx);
2191
2192 workspace.update(cx, |workspace, cx| {
2193 Pane::close_active_item(workspace, &CloseActiveItem, cx);
2194 });
2195 deterministic.run_until_parked();
2196 assert_item_labels(&pane, ["A*"], cx);
2197 }
2198
2199 fn add_labled_item(
2200 workspace: &ViewHandle<Workspace>,
2201 pane: &ViewHandle<Pane>,
2202 label: &str,
2203 cx: &mut TestAppContext,
2204 ) -> Box<ViewHandle<TestItem>> {
2205 workspace.update(cx, |workspace, cx| {
2206 let labeled_item = Box::new(cx.add_view(|_| TestItem::new().with_label(label)));
2207
2208 Pane::add_item(
2209 workspace,
2210 pane,
2211 labeled_item.clone(),
2212 false,
2213 false,
2214 None,
2215 cx,
2216 );
2217
2218 labeled_item
2219 })
2220 }
2221
2222 fn set_labeled_items<const COUNT: usize>(
2223 workspace: &ViewHandle<Workspace>,
2224 pane: &ViewHandle<Pane>,
2225 labels: [&str; COUNT],
2226 cx: &mut TestAppContext,
2227 ) -> [Box<ViewHandle<TestItem>>; COUNT] {
2228 pane.update(cx, |pane, _| {
2229 pane.items.clear();
2230 });
2231
2232 workspace.update(cx, |workspace, cx| {
2233 let mut active_item_index = 0;
2234
2235 let mut index = 0;
2236 let items = labels.map(|mut label| {
2237 if label.ends_with("*") {
2238 label = label.trim_end_matches("*");
2239 active_item_index = index;
2240 }
2241
2242 let labeled_item = Box::new(cx.add_view(|_| TestItem::new().with_label(label)));
2243 Pane::add_item(
2244 workspace,
2245 pane,
2246 labeled_item.clone(),
2247 false,
2248 false,
2249 None,
2250 cx,
2251 );
2252 index += 1;
2253 labeled_item
2254 });
2255
2256 pane.update(cx, |pane, cx| {
2257 pane.activate_item(active_item_index, false, false, cx)
2258 });
2259
2260 items
2261 })
2262 }
2263
2264 // Assert the item label, with the active item label suffixed with a '*'
2265 fn assert_item_labels<const COUNT: usize>(
2266 pane: &ViewHandle<Pane>,
2267 expected_states: [&str; COUNT],
2268 cx: &mut TestAppContext,
2269 ) {
2270 pane.read_with(cx, |pane, cx| {
2271 let actual_states = pane
2272 .items
2273 .iter()
2274 .enumerate()
2275 .map(|(ix, item)| {
2276 let mut state = item
2277 .to_any()
2278 .downcast::<TestItem>()
2279 .unwrap()
2280 .read(cx)
2281 .label
2282 .clone();
2283 if ix == pane.active_item_index {
2284 state.push('*');
2285 }
2286 state
2287 })
2288 .collect::<Vec<_>>();
2289
2290 assert_eq!(
2291 actual_states, expected_states,
2292 "pane items do not match expectation"
2293 );
2294 })
2295 }
2296}