1mod dragged_item_receiver;
2
3use super::{ItemHandle, SplitDirection};
4use crate::{
5 item::WeakItemHandle, toolbar::Toolbar, AutosaveSetting, Item, NewFile, NewSearch, NewTerminal,
6 ToggleZoom, Workspace, WorkspaceSettings,
7};
8use anyhow::{anyhow, Result};
9use collections::{HashMap, HashSet, VecDeque};
10use context_menu::{ContextMenu, ContextMenuItem};
11use drag_and_drop::{DragAndDrop, Draggable};
12use dragged_item_receiver::dragged_item_receiver;
13use futures::StreamExt;
14use gpui::{
15 actions,
16 elements::*,
17 geometry::{
18 rect::RectF,
19 vector::{vec2f, Vector2F},
20 },
21 impl_actions,
22 keymap_matcher::KeymapContext,
23 platform::{CursorStyle, MouseButton, NavigationDirection, PromptLevel},
24 Action, AnyViewHandle, AnyWeakViewHandle, AppContext, AsyncAppContext, Entity, EventContext,
25 LayoutContext, ModelHandle, MouseRegion, Quad, Task, View, ViewContext, ViewHandle,
26 WeakViewHandle, WindowContext,
27};
28use project::{Project, ProjectEntryId, ProjectPath};
29use serde::Deserialize;
30use std::{
31 any::Any,
32 cell::RefCell,
33 cmp, mem,
34 path::{Path, PathBuf},
35 rc::Rc,
36 sync::{
37 atomic::{AtomicUsize, Ordering},
38 Arc,
39 },
40};
41use theme::{Theme, ThemeSettings};
42use util::ResultExt;
43
44#[derive(Clone, Deserialize, PartialEq)]
45pub struct ActivateItem(pub usize);
46
47#[derive(Clone, PartialEq)]
48pub struct CloseItemById {
49 pub item_id: usize,
50 pub pane: WeakViewHandle<Pane>,
51}
52
53#[derive(Clone, PartialEq)]
54pub struct CloseItemsToTheLeftById {
55 pub item_id: usize,
56 pub pane: WeakViewHandle<Pane>,
57}
58
59#[derive(Clone, PartialEq)]
60pub struct CloseItemsToTheRightById {
61 pub item_id: usize,
62 pub pane: WeakViewHandle<Pane>,
63}
64
65actions!(
66 pane,
67 [
68 ActivatePrevItem,
69 ActivateNextItem,
70 ActivateLastItem,
71 CloseActiveItem,
72 CloseInactiveItems,
73 CloseCleanItems,
74 CloseItemsToTheLeft,
75 CloseItemsToTheRight,
76 CloseAllItems,
77 ReopenClosedItem,
78 SplitLeft,
79 SplitUp,
80 SplitRight,
81 SplitDown,
82 ]
83);
84
85#[derive(Clone, Deserialize, PartialEq)]
86pub struct GoBack {
87 #[serde(skip_deserializing)]
88 pub pane: Option<WeakViewHandle<Pane>>,
89}
90
91#[derive(Clone, Deserialize, PartialEq)]
92pub struct GoForward {
93 #[serde(skip_deserializing)]
94 pub pane: Option<WeakViewHandle<Pane>>,
95}
96
97impl_actions!(pane, [GoBack, GoForward, ActivateItem]);
98
99const MAX_NAVIGATION_HISTORY_LEN: usize = 1024;
100
101pub type BackgroundActions = fn() -> &'static [(&'static str, &'static dyn Action)];
102
103pub fn init(cx: &mut AppContext) {
104 cx.add_action(Pane::toggle_zoom);
105 cx.add_action(|pane: &mut Pane, action: &ActivateItem, cx| {
106 pane.activate_item(action.0, true, true, cx);
107 });
108 cx.add_action(|pane: &mut Pane, _: &ActivateLastItem, cx| {
109 pane.activate_item(pane.items.len() - 1, true, true, cx);
110 });
111 cx.add_action(|pane: &mut Pane, _: &ActivatePrevItem, cx| {
112 pane.activate_prev_item(true, cx);
113 });
114 cx.add_action(|pane: &mut Pane, _: &ActivateNextItem, cx| {
115 pane.activate_next_item(true, cx);
116 });
117 cx.add_async_action(Pane::close_active_item);
118 cx.add_async_action(Pane::close_inactive_items);
119 cx.add_async_action(Pane::close_clean_items);
120 cx.add_async_action(Pane::close_items_to_the_left);
121 cx.add_async_action(Pane::close_items_to_the_right);
122 cx.add_async_action(Pane::close_all_items);
123 cx.add_action(|pane: &mut Pane, _: &SplitLeft, cx| pane.split(SplitDirection::Left, cx));
124 cx.add_action(|pane: &mut Pane, _: &SplitUp, cx| pane.split(SplitDirection::Up, cx));
125 cx.add_action(|pane: &mut Pane, _: &SplitRight, cx| pane.split(SplitDirection::Right, cx));
126 cx.add_action(|pane: &mut Pane, _: &SplitDown, cx| pane.split(SplitDirection::Down, cx));
127 cx.add_action(|workspace: &mut Workspace, _: &ReopenClosedItem, cx| {
128 Pane::reopen_closed_item(workspace, cx).detach();
129 });
130 cx.add_action(|workspace: &mut Workspace, action: &GoBack, cx| {
131 Pane::go_back(workspace, action.pane.clone(), cx).detach();
132 });
133 cx.add_action(|workspace: &mut Workspace, action: &GoForward, cx| {
134 Pane::go_forward(workspace, action.pane.clone(), cx).detach();
135 });
136}
137
138#[derive(Debug)]
139pub enum Event {
140 ActivateItem { local: bool },
141 Remove,
142 RemoveItem { item_id: usize },
143 Split(SplitDirection),
144 ChangeItemTitle,
145 Focus,
146 ZoomIn,
147 ZoomOut,
148}
149
150pub struct Pane {
151 items: Vec<Box<dyn ItemHandle>>,
152 activation_history: Vec<usize>,
153 is_active: bool,
154 zoomed: bool,
155 active_item_index: usize,
156 last_focused_view_by_item: HashMap<usize, AnyWeakViewHandle>,
157 autoscroll: bool,
158 nav_history: Rc<RefCell<NavHistory>>,
159 toolbar: ViewHandle<Toolbar>,
160 tab_bar_context_menu: TabBarContextMenu,
161 tab_context_menu: ViewHandle<ContextMenu>,
162 _background_actions: BackgroundActions,
163 workspace: WeakViewHandle<Workspace>,
164 has_focus: bool,
165 can_drop: Rc<dyn Fn(&DragAndDrop<Workspace>, &WindowContext) -> bool>,
166 can_split: bool,
167 can_navigate: bool,
168 render_tab_bar_buttons: Rc<dyn Fn(&mut Pane, &mut ViewContext<Pane>) -> AnyElement<Pane>>,
169}
170
171pub struct ItemNavHistory {
172 history: Rc<RefCell<NavHistory>>,
173 item: Rc<dyn WeakItemHandle>,
174}
175
176pub struct PaneNavHistory(Rc<RefCell<NavHistory>>);
177
178struct NavHistory {
179 mode: NavigationMode,
180 backward_stack: VecDeque<NavigationEntry>,
181 forward_stack: VecDeque<NavigationEntry>,
182 closed_stack: VecDeque<NavigationEntry>,
183 paths_by_item: HashMap<usize, (ProjectPath, Option<PathBuf>)>,
184 pane: WeakViewHandle<Pane>,
185 next_timestamp: Arc<AtomicUsize>,
186}
187
188#[derive(Copy, Clone)]
189enum NavigationMode {
190 Normal,
191 GoingBack,
192 GoingForward,
193 ClosingItem,
194 ReopeningClosedItem,
195 Disabled,
196}
197
198impl Default for NavigationMode {
199 fn default() -> Self {
200 Self::Normal
201 }
202}
203
204pub struct NavigationEntry {
205 pub item: Rc<dyn WeakItemHandle>,
206 pub data: Option<Box<dyn Any>>,
207 pub timestamp: usize,
208}
209
210pub struct DraggedItem {
211 pub handle: Box<dyn ItemHandle>,
212 pub pane: WeakViewHandle<Pane>,
213}
214
215pub enum ReorderBehavior {
216 None,
217 MoveAfterActive,
218 MoveToIndex(usize),
219}
220
221#[derive(Debug, Clone, Copy, PartialEq, Eq)]
222enum TabBarContextMenuKind {
223 New,
224 Split,
225}
226
227struct TabBarContextMenu {
228 kind: TabBarContextMenuKind,
229 handle: ViewHandle<ContextMenu>,
230}
231
232impl TabBarContextMenu {
233 fn handle_if_kind(&self, kind: TabBarContextMenuKind) -> Option<ViewHandle<ContextMenu>> {
234 if self.kind == kind {
235 return Some(self.handle.clone());
236 }
237 None
238 }
239}
240
241impl Pane {
242 pub fn new(
243 workspace: WeakViewHandle<Workspace>,
244 background_actions: BackgroundActions,
245 next_timestamp: Arc<AtomicUsize>,
246 cx: &mut ViewContext<Self>,
247 ) -> Self {
248 let pane_view_id = cx.view_id();
249 let handle = cx.weak_handle();
250 let context_menu = cx.add_view(|cx| ContextMenu::new(pane_view_id, cx));
251 context_menu.update(cx, |menu, _| {
252 menu.set_position_mode(OverlayPositionMode::Local)
253 });
254
255 Self {
256 items: Vec::new(),
257 activation_history: Vec::new(),
258 is_active: true,
259 zoomed: false,
260 active_item_index: 0,
261 last_focused_view_by_item: Default::default(),
262 autoscroll: false,
263 nav_history: Rc::new(RefCell::new(NavHistory {
264 mode: NavigationMode::Normal,
265 backward_stack: Default::default(),
266 forward_stack: Default::default(),
267 closed_stack: Default::default(),
268 paths_by_item: Default::default(),
269 pane: handle.clone(),
270 next_timestamp,
271 })),
272 toolbar: cx.add_view(|_| Toolbar::new(handle)),
273 tab_bar_context_menu: TabBarContextMenu {
274 kind: TabBarContextMenuKind::New,
275 handle: context_menu,
276 },
277 tab_context_menu: cx.add_view(|cx| ContextMenu::new(pane_view_id, cx)),
278 _background_actions: background_actions,
279 workspace,
280 has_focus: false,
281 can_drop: Rc::new(|_, _| true),
282 can_split: true,
283 can_navigate: true,
284 render_tab_bar_buttons: Rc::new(|pane, cx| {
285 Flex::row()
286 // New menu
287 .with_child(Self::render_tab_bar_button(
288 0,
289 "icons/plus_12.svg",
290 Some(("New...".into(), None)),
291 cx,
292 |pane, cx| pane.deploy_new_menu(cx),
293 pane.tab_bar_context_menu
294 .handle_if_kind(TabBarContextMenuKind::New),
295 ))
296 .with_child(Self::render_tab_bar_button(
297 1,
298 "icons/split_12.svg",
299 Some(("Split Pane".into(), None)),
300 cx,
301 |pane, cx| pane.deploy_split_menu(cx),
302 pane.tab_bar_context_menu
303 .handle_if_kind(TabBarContextMenuKind::Split),
304 ))
305 .with_child(Pane::render_tab_bar_button(
306 2,
307 if pane.is_zoomed() {
308 "icons/minimize_8.svg"
309 } else {
310 "icons/maximize_8.svg"
311 },
312 Some(("Toggle Zoom".into(), Some(Box::new(ToggleZoom)))),
313 cx,
314 move |pane, cx| pane.toggle_zoom(&Default::default(), cx),
315 None,
316 ))
317 .into_any()
318 }),
319 }
320 }
321
322 pub(crate) fn workspace(&self) -> &WeakViewHandle<Workspace> {
323 &self.workspace
324 }
325
326 pub fn is_active(&self) -> bool {
327 self.is_active
328 }
329
330 pub fn set_active(&mut self, is_active: bool, cx: &mut ViewContext<Self>) {
331 self.is_active = is_active;
332 cx.notify();
333 }
334
335 pub fn has_focus(&self) -> bool {
336 self.has_focus
337 }
338
339 pub fn on_can_drop<F>(&mut self, can_drop: F)
340 where
341 F: 'static + Fn(&DragAndDrop<Workspace>, &WindowContext) -> bool,
342 {
343 self.can_drop = Rc::new(can_drop);
344 }
345
346 pub fn set_can_split(&mut self, can_split: bool, cx: &mut ViewContext<Self>) {
347 self.can_split = can_split;
348 cx.notify();
349 }
350
351 pub fn set_can_navigate(&mut self, can_navigate: bool, cx: &mut ViewContext<Self>) {
352 self.can_navigate = can_navigate;
353 self.toolbar.update(cx, |toolbar, cx| {
354 toolbar.set_can_navigate(can_navigate, cx);
355 });
356 cx.notify();
357 }
358
359 pub fn set_render_tab_bar_buttons<F>(&mut self, cx: &mut ViewContext<Self>, render: F)
360 where
361 F: 'static + Fn(&mut Pane, &mut ViewContext<Pane>) -> AnyElement<Pane>,
362 {
363 self.render_tab_bar_buttons = Rc::new(render);
364 cx.notify();
365 }
366
367 pub fn nav_history_for_item<T: Item>(&self, item: &ViewHandle<T>) -> ItemNavHistory {
368 ItemNavHistory {
369 history: self.nav_history.clone(),
370 item: Rc::new(item.downgrade()),
371 }
372 }
373
374 pub fn nav_history(&self) -> PaneNavHistory {
375 PaneNavHistory(self.nav_history.clone())
376 }
377
378 pub fn go_back(
379 workspace: &mut Workspace,
380 pane: Option<WeakViewHandle<Pane>>,
381 cx: &mut ViewContext<Workspace>,
382 ) -> Task<Result<()>> {
383 Self::navigate_history(
384 workspace,
385 pane.unwrap_or_else(|| workspace.active_pane().downgrade()),
386 NavigationMode::GoingBack,
387 cx,
388 )
389 }
390
391 pub fn go_forward(
392 workspace: &mut Workspace,
393 pane: Option<WeakViewHandle<Pane>>,
394 cx: &mut ViewContext<Workspace>,
395 ) -> Task<Result<()>> {
396 Self::navigate_history(
397 workspace,
398 pane.unwrap_or_else(|| workspace.active_pane().downgrade()),
399 NavigationMode::GoingForward,
400 cx,
401 )
402 }
403
404 pub fn reopen_closed_item(
405 workspace: &mut Workspace,
406 cx: &mut ViewContext<Workspace>,
407 ) -> Task<Result<()>> {
408 Self::navigate_history(
409 workspace,
410 workspace.active_pane().downgrade(),
411 NavigationMode::ReopeningClosedItem,
412 cx,
413 )
414 }
415
416 pub fn disable_history(&mut self) {
417 self.nav_history.borrow_mut().disable();
418 }
419
420 pub fn enable_history(&mut self) {
421 self.nav_history.borrow_mut().enable();
422 }
423
424 pub fn can_navigate_backward(&self) -> bool {
425 !self.nav_history.borrow().backward_stack.is_empty()
426 }
427
428 pub fn can_navigate_forward(&self) -> bool {
429 !self.nav_history.borrow().forward_stack.is_empty()
430 }
431
432 fn history_updated(&mut self, cx: &mut ViewContext<Self>) {
433 self.toolbar.update(cx, |_, cx| cx.notify());
434 }
435
436 fn navigate_history(
437 workspace: &mut Workspace,
438 pane: WeakViewHandle<Pane>,
439 mode: NavigationMode,
440 cx: &mut ViewContext<Workspace>,
441 ) -> Task<Result<()>> {
442 let to_load = if let Some(pane) = pane.upgrade(cx) {
443 if !pane.read(cx).can_navigate {
444 return Task::ready(Ok(()));
445 }
446
447 cx.focus(&pane);
448
449 pane.update(cx, |pane, cx| {
450 loop {
451 // Retrieve the weak item handle from the history.
452 let entry = pane.nav_history.borrow_mut().pop(mode, cx)?;
453
454 // If the item is still present in this pane, then activate it.
455 if let Some(index) = entry
456 .item
457 .upgrade(cx)
458 .and_then(|v| pane.index_for_item(v.as_ref()))
459 {
460 let prev_active_item_index = pane.active_item_index;
461 pane.nav_history.borrow_mut().set_mode(mode);
462 pane.activate_item(index, true, true, cx);
463 pane.nav_history
464 .borrow_mut()
465 .set_mode(NavigationMode::Normal);
466
467 let mut navigated = prev_active_item_index != pane.active_item_index;
468 if let Some(data) = entry.data {
469 navigated |= pane.active_item()?.navigate(data, cx);
470 }
471
472 if navigated {
473 break None;
474 }
475 }
476 // If the item is no longer present in this pane, then retrieve its
477 // project path in order to reopen it.
478 else {
479 break pane
480 .nav_history
481 .borrow()
482 .paths_by_item
483 .get(&entry.item.id())
484 .cloned()
485 .map(|(project_path, _)| (project_path, entry));
486 }
487 }
488 })
489 } else {
490 None
491 };
492
493 if let Some((project_path, entry)) = to_load {
494 // If the item was no longer present, then load it again from its previous path.
495 let task = workspace.load_path(project_path, cx);
496 cx.spawn(|workspace, mut cx| async move {
497 let task = task.await;
498 let mut navigated = false;
499 if let Some((project_entry_id, build_item)) = task.log_err() {
500 let prev_active_item_id = pane.update(&mut cx, |pane, _| {
501 pane.nav_history.borrow_mut().set_mode(mode);
502 pane.active_item().map(|p| p.id())
503 })?;
504
505 let item = workspace.update(&mut cx, |workspace, cx| {
506 let pane = pane
507 .upgrade(cx)
508 .ok_or_else(|| anyhow!("pane was dropped"))?;
509 anyhow::Ok(Self::open_item(
510 workspace,
511 pane.clone(),
512 project_entry_id,
513 true,
514 cx,
515 build_item,
516 ))
517 })??;
518
519 pane.update(&mut cx, |pane, cx| {
520 navigated |= Some(item.id()) != prev_active_item_id;
521 pane.nav_history
522 .borrow_mut()
523 .set_mode(NavigationMode::Normal);
524 if let Some(data) = entry.data {
525 navigated |= item.navigate(data, cx);
526 }
527 })?;
528 }
529
530 if !navigated {
531 workspace
532 .update(&mut cx, |workspace, cx| {
533 Self::navigate_history(workspace, pane, mode, cx)
534 })?
535 .await?;
536 }
537
538 Ok(())
539 })
540 } else {
541 Task::ready(Ok(()))
542 }
543 }
544
545 pub(crate) fn open_item(
546 workspace: &mut Workspace,
547 pane: ViewHandle<Pane>,
548 project_entry_id: ProjectEntryId,
549 focus_item: bool,
550 cx: &mut ViewContext<Workspace>,
551 build_item: impl FnOnce(&mut ViewContext<Pane>) -> Box<dyn ItemHandle>,
552 ) -> Box<dyn ItemHandle> {
553 let existing_item = pane.update(cx, |pane, cx| {
554 for (index, item) in pane.items.iter().enumerate() {
555 if item.is_singleton(cx)
556 && item.project_entry_ids(cx).as_slice() == [project_entry_id]
557 {
558 let item = item.boxed_clone();
559 return Some((index, item));
560 }
561 }
562 None
563 });
564
565 if let Some((index, existing_item)) = existing_item {
566 pane.update(cx, |pane, cx| {
567 pane.activate_item(index, focus_item, focus_item, cx);
568 });
569 existing_item
570 } else {
571 let new_item = pane.update(cx, |_, cx| build_item(cx));
572 Pane::add_item(
573 workspace,
574 &pane,
575 new_item.clone(),
576 true,
577 focus_item,
578 None,
579 cx,
580 );
581 new_item
582 }
583 }
584
585 pub fn add_item(
586 workspace: &mut Workspace,
587 pane: &ViewHandle<Pane>,
588 item: Box<dyn ItemHandle>,
589 activate_pane: bool,
590 focus_item: bool,
591 destination_index: Option<usize>,
592 cx: &mut ViewContext<Workspace>,
593 ) {
594 if item.is_singleton(cx) {
595 if let Some(&entry_id) = item.project_entry_ids(cx).get(0) {
596 if let Some(project_path) =
597 workspace.project().read(cx).path_for_entry(entry_id, cx)
598 {
599 let abs_path = workspace.absolute_path(&project_path, cx);
600 pane.read(cx)
601 .nav_history
602 .borrow_mut()
603 .paths_by_item
604 .insert(item.id(), (project_path, abs_path));
605 }
606 }
607 }
608 // If no destination index is specified, add or move the item after the active item.
609 let mut insertion_index = {
610 let pane = pane.read(cx);
611 cmp::min(
612 if let Some(destination_index) = destination_index {
613 destination_index
614 } else {
615 pane.active_item_index + 1
616 },
617 pane.items.len(),
618 )
619 };
620
621 item.added_to_pane(workspace, pane.clone(), cx);
622
623 // Does the item already exist?
624 let project_entry_id = if item.is_singleton(cx) {
625 item.project_entry_ids(cx).get(0).copied()
626 } else {
627 None
628 };
629
630 let existing_item_index = pane.read(cx).items.iter().position(|existing_item| {
631 if existing_item.id() == item.id() {
632 true
633 } else if existing_item.is_singleton(cx) {
634 existing_item
635 .project_entry_ids(cx)
636 .get(0)
637 .map_or(false, |existing_entry_id| {
638 Some(existing_entry_id) == project_entry_id.as_ref()
639 })
640 } else {
641 false
642 }
643 });
644
645 if let Some(existing_item_index) = existing_item_index {
646 // If the item already exists, move it to the desired destination and activate it
647 pane.update(cx, |pane, cx| {
648 if existing_item_index != insertion_index {
649 let existing_item_is_active = existing_item_index == pane.active_item_index;
650
651 // If the caller didn't specify a destination and the added item is already
652 // the active one, don't move it
653 if existing_item_is_active && destination_index.is_none() {
654 insertion_index = existing_item_index;
655 } else {
656 pane.items.remove(existing_item_index);
657 if existing_item_index < pane.active_item_index {
658 pane.active_item_index -= 1;
659 }
660 insertion_index = insertion_index.min(pane.items.len());
661
662 pane.items.insert(insertion_index, item.clone());
663
664 if existing_item_is_active {
665 pane.active_item_index = insertion_index;
666 } else if insertion_index <= pane.active_item_index {
667 pane.active_item_index += 1;
668 }
669 }
670
671 cx.notify();
672 }
673
674 pane.activate_item(insertion_index, activate_pane, focus_item, cx);
675 });
676 } else {
677 pane.update(cx, |pane, cx| {
678 pane.items.insert(insertion_index, item);
679 if insertion_index <= pane.active_item_index {
680 pane.active_item_index += 1;
681 }
682
683 pane.activate_item(insertion_index, activate_pane, focus_item, cx);
684 cx.notify();
685 });
686 }
687 }
688
689 pub fn items_len(&self) -> usize {
690 self.items.len()
691 }
692
693 pub fn items(&self) -> impl Iterator<Item = &Box<dyn ItemHandle>> + DoubleEndedIterator {
694 self.items.iter()
695 }
696
697 pub fn items_of_type<T: View>(&self) -> impl '_ + Iterator<Item = ViewHandle<T>> {
698 self.items
699 .iter()
700 .filter_map(|item| item.as_any().clone().downcast())
701 }
702
703 pub fn active_item(&self) -> Option<Box<dyn ItemHandle>> {
704 self.items.get(self.active_item_index).cloned()
705 }
706
707 pub fn item_for_entry(
708 &self,
709 entry_id: ProjectEntryId,
710 cx: &AppContext,
711 ) -> Option<Box<dyn ItemHandle>> {
712 self.items.iter().find_map(|item| {
713 if item.is_singleton(cx) && item.project_entry_ids(cx).as_slice() == [entry_id] {
714 Some(item.boxed_clone())
715 } else {
716 None
717 }
718 })
719 }
720
721 pub fn index_for_item(&self, item: &dyn ItemHandle) -> Option<usize> {
722 self.items.iter().position(|i| i.id() == item.id())
723 }
724
725 pub fn toggle_zoom(&mut self, _: &ToggleZoom, cx: &mut ViewContext<Self>) {
726 if self.zoomed {
727 cx.emit(Event::ZoomOut);
728 } else if !self.items.is_empty() {
729 if !self.has_focus {
730 cx.focus_self();
731 }
732 cx.emit(Event::ZoomIn);
733 }
734 }
735
736 pub fn activate_item(
737 &mut self,
738 index: usize,
739 activate_pane: bool,
740 focus_item: bool,
741 cx: &mut ViewContext<Self>,
742 ) {
743 use NavigationMode::{GoingBack, GoingForward};
744
745 if index < self.items.len() {
746 let prev_active_item_ix = mem::replace(&mut self.active_item_index, index);
747 if prev_active_item_ix != self.active_item_index
748 || matches!(self.nav_history.borrow().mode, GoingBack | GoingForward)
749 {
750 if let Some(prev_item) = self.items.get(prev_active_item_ix) {
751 prev_item.deactivated(cx);
752 }
753
754 cx.emit(Event::ActivateItem {
755 local: activate_pane,
756 });
757 }
758
759 if let Some(newly_active_item) = self.items.get(index) {
760 self.activation_history
761 .retain(|&previously_active_item_id| {
762 previously_active_item_id != newly_active_item.id()
763 });
764 self.activation_history.push(newly_active_item.id());
765 }
766
767 self.update_toolbar(cx);
768
769 if focus_item {
770 self.focus_active_item(cx);
771 }
772
773 self.autoscroll = true;
774 cx.notify();
775 }
776 }
777
778 pub fn activate_prev_item(&mut self, activate_pane: bool, cx: &mut ViewContext<Self>) {
779 let mut index = self.active_item_index;
780 if index > 0 {
781 index -= 1;
782 } else if !self.items.is_empty() {
783 index = self.items.len() - 1;
784 }
785 self.activate_item(index, activate_pane, activate_pane, cx);
786 }
787
788 pub fn activate_next_item(&mut self, activate_pane: bool, cx: &mut ViewContext<Self>) {
789 let mut index = self.active_item_index;
790 if index + 1 < self.items.len() {
791 index += 1;
792 } else {
793 index = 0;
794 }
795 self.activate_item(index, activate_pane, activate_pane, cx);
796 }
797
798 pub fn close_active_item(
799 &mut self,
800 _: &CloseActiveItem,
801 cx: &mut ViewContext<Self>,
802 ) -> Option<Task<Result<()>>> {
803 if self.items.is_empty() {
804 return None;
805 }
806 let active_item_id = self.items[self.active_item_index].id();
807 Some(self.close_item_by_id(active_item_id, cx))
808 }
809
810 pub fn close_item_by_id(
811 &mut self,
812 item_id_to_close: usize,
813 cx: &mut ViewContext<Self>,
814 ) -> Task<Result<()>> {
815 self.close_items(cx, move |view_id| view_id == item_id_to_close)
816 }
817
818 pub fn close_inactive_items(
819 &mut self,
820 _: &CloseInactiveItems,
821 cx: &mut ViewContext<Self>,
822 ) -> Option<Task<Result<()>>> {
823 if self.items.is_empty() {
824 return None;
825 }
826
827 let active_item_id = self.items[self.active_item_index].id();
828 Some(self.close_items(cx, move |item_id| item_id != active_item_id))
829 }
830
831 pub fn close_clean_items(
832 &mut self,
833 _: &CloseCleanItems,
834 cx: &mut ViewContext<Self>,
835 ) -> Option<Task<Result<()>>> {
836 let item_ids: Vec<_> = self
837 .items()
838 .filter(|item| !item.is_dirty(cx))
839 .map(|item| item.id())
840 .collect();
841 Some(self.close_items(cx, move |item_id| item_ids.contains(&item_id)))
842 }
843
844 pub fn close_items_to_the_left(
845 &mut self,
846 _: &CloseItemsToTheLeft,
847 cx: &mut ViewContext<Self>,
848 ) -> Option<Task<Result<()>>> {
849 if self.items.is_empty() {
850 return None;
851 }
852 let active_item_id = self.items[self.active_item_index].id();
853 Some(self.close_items_to_the_left_by_id(active_item_id, cx))
854 }
855
856 pub fn close_items_to_the_left_by_id(
857 &mut self,
858 item_id: usize,
859 cx: &mut ViewContext<Self>,
860 ) -> Task<Result<()>> {
861 let item_ids: Vec<_> = self
862 .items()
863 .take_while(|item| item.id() != item_id)
864 .map(|item| item.id())
865 .collect();
866 self.close_items(cx, move |item_id| item_ids.contains(&item_id))
867 }
868
869 pub fn close_items_to_the_right(
870 &mut self,
871 _: &CloseItemsToTheRight,
872 cx: &mut ViewContext<Self>,
873 ) -> Option<Task<Result<()>>> {
874 if self.items.is_empty() {
875 return None;
876 }
877 let active_item_id = self.items[self.active_item_index].id();
878 Some(self.close_items_to_the_right_by_id(active_item_id, cx))
879 }
880
881 pub fn close_items_to_the_right_by_id(
882 &mut self,
883 item_id: usize,
884 cx: &mut ViewContext<Self>,
885 ) -> Task<Result<()>> {
886 let item_ids: Vec<_> = self
887 .items()
888 .rev()
889 .take_while(|item| item.id() != item_id)
890 .map(|item| item.id())
891 .collect();
892 self.close_items(cx, move |item_id| item_ids.contains(&item_id))
893 }
894
895 pub fn close_all_items(
896 &mut self,
897 _: &CloseAllItems,
898 cx: &mut ViewContext<Self>,
899 ) -> Option<Task<Result<()>>> {
900 Some(self.close_items(cx, move |_| true))
901 }
902
903 pub fn close_items(
904 &mut self,
905 cx: &mut ViewContext<Pane>,
906 should_close: impl 'static + Fn(usize) -> bool,
907 ) -> Task<Result<()>> {
908 // Find the items to close.
909 let mut items_to_close = Vec::new();
910 for item in &self.items {
911 if should_close(item.id()) {
912 items_to_close.push(item.boxed_clone());
913 }
914 }
915
916 // If a buffer is open both in a singleton editor and in a multibuffer, make sure
917 // to focus the singleton buffer when prompting to save that buffer, as opposed
918 // to focusing the multibuffer, because this gives the user a more clear idea
919 // of what content they would be saving.
920 items_to_close.sort_by_key(|item| !item.is_singleton(cx));
921
922 let workspace = self.workspace.clone();
923 cx.spawn(|pane, mut cx| async move {
924 let mut saved_project_items_ids = HashSet::default();
925 for item in items_to_close.clone() {
926 // Find the item's current index and its set of project item models. Avoid
927 // storing these in advance, in case they have changed since this task
928 // was started.
929 let (item_ix, mut project_item_ids) = pane.read_with(&cx, |pane, cx| {
930 (pane.index_for_item(&*item), item.project_item_model_ids(cx))
931 })?;
932 let item_ix = if let Some(ix) = item_ix {
933 ix
934 } else {
935 continue;
936 };
937
938 // Check if this view has any project items that are not open anywhere else
939 // in the workspace, AND that the user has not already been prompted to save.
940 // If there are any such project entries, prompt the user to save this item.
941 let project = workspace.read_with(&cx, |workspace, cx| {
942 for item in workspace.items(cx) {
943 if !items_to_close
944 .iter()
945 .any(|item_to_close| item_to_close.id() == item.id())
946 {
947 let other_project_item_ids = item.project_item_model_ids(cx);
948 project_item_ids.retain(|id| !other_project_item_ids.contains(id));
949 }
950 }
951 workspace.project().clone()
952 })?;
953 let should_save = project_item_ids
954 .iter()
955 .any(|id| saved_project_items_ids.insert(*id));
956
957 if should_save
958 && !Self::save_item(project.clone(), &pane, item_ix, &*item, true, &mut cx)
959 .await?
960 {
961 break;
962 }
963
964 // Remove the item from the pane.
965 pane.update(&mut cx, |pane, cx| {
966 if let Some(item_ix) = pane.items.iter().position(|i| i.id() == item.id()) {
967 pane.remove_item(item_ix, false, cx);
968 }
969 })?;
970 }
971
972 pane.update(&mut cx, |_, cx| cx.notify())?;
973 Ok(())
974 })
975 }
976
977 fn remove_item(&mut self, item_index: usize, activate_pane: bool, cx: &mut ViewContext<Self>) {
978 self.activation_history
979 .retain(|&history_entry| history_entry != self.items[item_index].id());
980
981 if item_index == self.active_item_index {
982 let index_to_activate = self
983 .activation_history
984 .pop()
985 .and_then(|last_activated_item| {
986 self.items.iter().enumerate().find_map(|(index, item)| {
987 (item.id() == last_activated_item).then_some(index)
988 })
989 })
990 // We didn't have a valid activation history entry, so fallback
991 // to activating the item to the left
992 .unwrap_or_else(|| item_index.min(self.items.len()).saturating_sub(1));
993
994 let should_activate = activate_pane || self.has_focus;
995 self.activate_item(index_to_activate, should_activate, should_activate, cx);
996 }
997
998 let item = self.items.remove(item_index);
999
1000 cx.emit(Event::RemoveItem { item_id: item.id() });
1001 if self.items.is_empty() {
1002 item.deactivated(cx);
1003 self.update_toolbar(cx);
1004 cx.emit(Event::Remove);
1005 }
1006
1007 if item_index < self.active_item_index {
1008 self.active_item_index -= 1;
1009 }
1010
1011 self.nav_history
1012 .borrow_mut()
1013 .set_mode(NavigationMode::ClosingItem);
1014 item.deactivated(cx);
1015 self.nav_history
1016 .borrow_mut()
1017 .set_mode(NavigationMode::Normal);
1018
1019 if let Some(path) = item.project_path(cx) {
1020 let abs_path = self
1021 .nav_history
1022 .borrow()
1023 .paths_by_item
1024 .get(&item.id())
1025 .and_then(|(_, abs_path)| abs_path.clone());
1026 self.nav_history
1027 .borrow_mut()
1028 .paths_by_item
1029 .insert(item.id(), (path, abs_path));
1030 } else {
1031 self.nav_history
1032 .borrow_mut()
1033 .paths_by_item
1034 .remove(&item.id());
1035 }
1036
1037 if self.items.is_empty() && self.zoomed {
1038 cx.emit(Event::ZoomOut);
1039 }
1040
1041 cx.notify();
1042 }
1043
1044 pub async fn save_item(
1045 project: ModelHandle<Project>,
1046 pane: &WeakViewHandle<Pane>,
1047 item_ix: usize,
1048 item: &dyn ItemHandle,
1049 should_prompt_for_save: bool,
1050 cx: &mut AsyncAppContext,
1051 ) -> Result<bool> {
1052 const CONFLICT_MESSAGE: &str =
1053 "This file has changed on disk since you started editing it. Do you want to overwrite it?";
1054 const DIRTY_MESSAGE: &str = "This file contains unsaved edits. Do you want to save it?";
1055
1056 let (has_conflict, is_dirty, can_save, is_singleton) = cx.read(|cx| {
1057 (
1058 item.has_conflict(cx),
1059 item.is_dirty(cx),
1060 item.can_save(cx),
1061 item.is_singleton(cx),
1062 )
1063 });
1064
1065 if has_conflict && can_save {
1066 let mut answer = pane.update(cx, |pane, cx| {
1067 pane.activate_item(item_ix, true, true, cx);
1068 cx.prompt(
1069 PromptLevel::Warning,
1070 CONFLICT_MESSAGE,
1071 &["Overwrite", "Discard", "Cancel"],
1072 )
1073 })?;
1074 match answer.next().await {
1075 Some(0) => pane.update(cx, |_, cx| item.save(project, cx))?.await?,
1076 Some(1) => pane.update(cx, |_, cx| item.reload(project, cx))?.await?,
1077 _ => return Ok(false),
1078 }
1079 } else if is_dirty && (can_save || is_singleton) {
1080 let will_autosave = cx.read(|cx| {
1081 matches!(
1082 settings::get::<WorkspaceSettings>(cx).autosave,
1083 AutosaveSetting::OnFocusChange | AutosaveSetting::OnWindowChange
1084 ) && Self::can_autosave_item(&*item, cx)
1085 });
1086 let should_save = if should_prompt_for_save && !will_autosave {
1087 let mut answer = pane.update(cx, |pane, cx| {
1088 pane.activate_item(item_ix, true, true, cx);
1089 cx.prompt(
1090 PromptLevel::Warning,
1091 DIRTY_MESSAGE,
1092 &["Save", "Don't Save", "Cancel"],
1093 )
1094 })?;
1095 match answer.next().await {
1096 Some(0) => true,
1097 Some(1) => false,
1098 _ => return Ok(false),
1099 }
1100 } else {
1101 true
1102 };
1103
1104 if should_save {
1105 if can_save {
1106 pane.update(cx, |_, cx| item.save(project, cx))?.await?;
1107 } else if is_singleton {
1108 let start_abs_path = project
1109 .read_with(cx, |project, cx| {
1110 let worktree = project.visible_worktrees(cx).next()?;
1111 Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
1112 })
1113 .unwrap_or_else(|| Path::new("").into());
1114
1115 let mut abs_path = cx.update(|cx| cx.prompt_for_new_path(&start_abs_path));
1116 if let Some(abs_path) = abs_path.next().await.flatten() {
1117 pane.update(cx, |_, cx| item.save_as(project, abs_path, cx))?
1118 .await?;
1119 } else {
1120 return Ok(false);
1121 }
1122 }
1123 }
1124 }
1125 Ok(true)
1126 }
1127
1128 fn can_autosave_item(item: &dyn ItemHandle, cx: &AppContext) -> bool {
1129 let is_deleted = item.project_entry_ids(cx).is_empty();
1130 item.is_dirty(cx) && !item.has_conflict(cx) && item.can_save(cx) && !is_deleted
1131 }
1132
1133 pub fn autosave_item(
1134 item: &dyn ItemHandle,
1135 project: ModelHandle<Project>,
1136 cx: &mut WindowContext,
1137 ) -> Task<Result<()>> {
1138 if Self::can_autosave_item(item, cx) {
1139 item.save(project, cx)
1140 } else {
1141 Task::ready(Ok(()))
1142 }
1143 }
1144
1145 pub fn focus_active_item(&mut self, cx: &mut ViewContext<Self>) {
1146 if let Some(active_item) = self.active_item() {
1147 cx.focus(active_item.as_any());
1148 }
1149 }
1150
1151 pub fn move_item(
1152 workspace: &mut Workspace,
1153 from: ViewHandle<Pane>,
1154 to: ViewHandle<Pane>,
1155 item_id_to_move: usize,
1156 destination_index: usize,
1157 cx: &mut ViewContext<Workspace>,
1158 ) {
1159 let item_to_move = from
1160 .read(cx)
1161 .items()
1162 .enumerate()
1163 .find(|(_, item_handle)| item_handle.id() == item_id_to_move);
1164
1165 if item_to_move.is_none() {
1166 log::warn!("Tried to move item handle which was not in `from` pane. Maybe tab was closed during drop");
1167 return;
1168 }
1169 let (item_ix, item_handle) = item_to_move.unwrap();
1170 let item_handle = item_handle.clone();
1171
1172 if from != to {
1173 // Close item from previous pane
1174 from.update(cx, |from, cx| {
1175 from.remove_item(item_ix, false, cx);
1176 });
1177 }
1178
1179 // This automatically removes duplicate items in the pane
1180 Pane::add_item(
1181 workspace,
1182 &to,
1183 item_handle,
1184 true,
1185 true,
1186 Some(destination_index),
1187 cx,
1188 );
1189
1190 cx.focus(&to);
1191 }
1192
1193 pub fn split(&mut self, direction: SplitDirection, cx: &mut ViewContext<Self>) {
1194 cx.emit(Event::Split(direction));
1195 }
1196
1197 fn deploy_split_menu(&mut self, cx: &mut ViewContext<Self>) {
1198 self.tab_bar_context_menu.handle.update(cx, |menu, cx| {
1199 menu.show(
1200 Default::default(),
1201 AnchorCorner::TopRight,
1202 vec![
1203 ContextMenuItem::action("Split Right", SplitRight),
1204 ContextMenuItem::action("Split Left", SplitLeft),
1205 ContextMenuItem::action("Split Up", SplitUp),
1206 ContextMenuItem::action("Split Down", SplitDown),
1207 ],
1208 cx,
1209 );
1210 });
1211
1212 self.tab_bar_context_menu.kind = TabBarContextMenuKind::Split;
1213 }
1214
1215 fn deploy_new_menu(&mut self, cx: &mut ViewContext<Self>) {
1216 self.tab_bar_context_menu.handle.update(cx, |menu, cx| {
1217 menu.show(
1218 Default::default(),
1219 AnchorCorner::TopRight,
1220 vec![
1221 ContextMenuItem::action("New File", NewFile),
1222 ContextMenuItem::action("New Terminal", NewTerminal),
1223 ContextMenuItem::action("New Search", NewSearch),
1224 ],
1225 cx,
1226 );
1227 });
1228
1229 self.tab_bar_context_menu.kind = TabBarContextMenuKind::New;
1230 }
1231
1232 fn deploy_tab_context_menu(
1233 &mut self,
1234 position: Vector2F,
1235 target_item_id: usize,
1236 cx: &mut ViewContext<Self>,
1237 ) {
1238 let active_item_id = self.items[self.active_item_index].id();
1239 let is_active_item = target_item_id == active_item_id;
1240 let target_pane = cx.weak_handle();
1241
1242 // The `CloseInactiveItems` action should really be called "CloseOthers" and the behaviour should be dynamically based on the tab the action is ran on. Currenlty, 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
1243
1244 self.tab_context_menu.update(cx, |menu, cx| {
1245 menu.show(
1246 position,
1247 AnchorCorner::TopLeft,
1248 if is_active_item {
1249 vec![
1250 ContextMenuItem::action("Close Active Item", CloseActiveItem),
1251 ContextMenuItem::action("Close Inactive Items", CloseInactiveItems),
1252 ContextMenuItem::action("Close Clean Items", CloseCleanItems),
1253 ContextMenuItem::action("Close Items To The Left", CloseItemsToTheLeft),
1254 ContextMenuItem::action("Close Items To The Right", CloseItemsToTheRight),
1255 ContextMenuItem::action("Close All Items", CloseAllItems),
1256 ]
1257 } else {
1258 // 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.
1259 vec![
1260 ContextMenuItem::handler("Close Inactive Item", {
1261 let pane = target_pane.clone();
1262 move |cx| {
1263 if let Some(pane) = pane.upgrade(cx) {
1264 pane.update(cx, |pane, cx| {
1265 pane.close_item_by_id(target_item_id, cx)
1266 .detach_and_log_err(cx);
1267 })
1268 }
1269 }
1270 }),
1271 ContextMenuItem::action("Close Inactive Items", CloseInactiveItems),
1272 ContextMenuItem::action("Close Clean Items", CloseCleanItems),
1273 ContextMenuItem::handler("Close Items To The Left", {
1274 let pane = target_pane.clone();
1275 move |cx| {
1276 if let Some(pane) = pane.upgrade(cx) {
1277 pane.update(cx, |pane, cx| {
1278 pane.close_items_to_the_left_by_id(target_item_id, cx)
1279 .detach_and_log_err(cx);
1280 })
1281 }
1282 }
1283 }),
1284 ContextMenuItem::handler("Close Items To The Right", {
1285 let pane = target_pane.clone();
1286 move |cx| {
1287 if let Some(pane) = pane.upgrade(cx) {
1288 pane.update(cx, |pane, cx| {
1289 pane.close_items_to_the_right_by_id(target_item_id, cx)
1290 .detach_and_log_err(cx);
1291 })
1292 }
1293 }
1294 }),
1295 ContextMenuItem::action("Close All Items", CloseAllItems),
1296 ]
1297 },
1298 cx,
1299 );
1300 });
1301 }
1302
1303 pub fn toolbar(&self) -> &ViewHandle<Toolbar> {
1304 &self.toolbar
1305 }
1306
1307 pub fn handle_deleted_project_item(
1308 &mut self,
1309 entry_id: ProjectEntryId,
1310 cx: &mut ViewContext<Pane>,
1311 ) -> Option<()> {
1312 let (item_index_to_delete, item_id) = self.items().enumerate().find_map(|(i, item)| {
1313 if item.is_singleton(cx) && item.project_entry_ids(cx).as_slice() == [entry_id] {
1314 Some((i, item.id()))
1315 } else {
1316 None
1317 }
1318 })?;
1319
1320 self.remove_item(item_index_to_delete, false, cx);
1321 self.nav_history.borrow_mut().remove_item(item_id);
1322
1323 Some(())
1324 }
1325
1326 fn update_toolbar(&mut self, cx: &mut ViewContext<Self>) {
1327 let active_item = self
1328 .items
1329 .get(self.active_item_index)
1330 .map(|item| item.as_ref());
1331 self.toolbar.update(cx, |toolbar, cx| {
1332 toolbar.set_active_pane_item(active_item, cx);
1333 });
1334 }
1335
1336 fn render_tabs(&mut self, cx: &mut ViewContext<Self>) -> impl Element<Self> {
1337 let theme = theme::current(cx).clone();
1338
1339 let pane = cx.handle().downgrade();
1340 let autoscroll = if mem::take(&mut self.autoscroll) {
1341 Some(self.active_item_index)
1342 } else {
1343 None
1344 };
1345
1346 let pane_active = self.is_active;
1347
1348 enum Tabs {}
1349 let mut row = Flex::row().scrollable::<Tabs>(1, autoscroll, cx);
1350 for (ix, (item, detail)) in self
1351 .items
1352 .iter()
1353 .cloned()
1354 .zip(self.tab_details(cx))
1355 .enumerate()
1356 {
1357 let detail = if detail == 0 { None } else { Some(detail) };
1358 let tab_active = ix == self.active_item_index;
1359
1360 row.add_child({
1361 enum TabDragReceiver {}
1362 let mut receiver =
1363 dragged_item_receiver::<TabDragReceiver, _, _>(self, ix, ix, true, None, cx, {
1364 let item = item.clone();
1365 let pane = pane.clone();
1366 let detail = detail.clone();
1367
1368 let theme = theme::current(cx).clone();
1369 let mut tooltip_theme = theme.tooltip.clone();
1370 tooltip_theme.max_text_width = None;
1371 let tab_tooltip_text = item.tab_tooltip_text(cx).map(|a| a.to_string());
1372
1373 move |mouse_state, cx| {
1374 let tab_style =
1375 theme.workspace.tab_bar.tab_style(pane_active, tab_active);
1376 let hovered = mouse_state.hovered();
1377
1378 enum Tab {}
1379 let mouse_event_handler =
1380 MouseEventHandler::<Tab, Pane>::new(ix, cx, |_, cx| {
1381 Self::render_tab(
1382 &item,
1383 pane.clone(),
1384 ix == 0,
1385 detail,
1386 hovered,
1387 tab_style,
1388 cx,
1389 )
1390 })
1391 .on_down(MouseButton::Left, move |_, this, cx| {
1392 this.activate_item(ix, true, true, cx);
1393 })
1394 .on_click(MouseButton::Middle, {
1395 let item_id = item.id();
1396 move |_, pane, cx| {
1397 pane.close_item_by_id(item_id, cx).detach_and_log_err(cx);
1398 }
1399 })
1400 .on_down(
1401 MouseButton::Right,
1402 move |event, pane, cx| {
1403 pane.deploy_tab_context_menu(event.position, item.id(), cx);
1404 },
1405 );
1406
1407 if let Some(tab_tooltip_text) = tab_tooltip_text {
1408 mouse_event_handler
1409 .with_tooltip::<Self>(
1410 ix,
1411 tab_tooltip_text,
1412 None,
1413 tooltip_theme,
1414 cx,
1415 )
1416 .into_any()
1417 } else {
1418 mouse_event_handler.into_any()
1419 }
1420 }
1421 });
1422
1423 if !pane_active || !tab_active {
1424 receiver = receiver.with_cursor_style(CursorStyle::PointingHand);
1425 }
1426
1427 receiver.as_draggable(
1428 DraggedItem {
1429 handle: item,
1430 pane: pane.clone(),
1431 },
1432 {
1433 let theme = theme::current(cx).clone();
1434
1435 let detail = detail.clone();
1436 move |dragged_item: &DraggedItem, cx: &mut ViewContext<Workspace>| {
1437 let tab_style = &theme.workspace.tab_bar.dragged_tab;
1438 Self::render_dragged_tab(
1439 &dragged_item.handle,
1440 dragged_item.pane.clone(),
1441 false,
1442 detail,
1443 false,
1444 &tab_style,
1445 cx,
1446 )
1447 }
1448 },
1449 )
1450 })
1451 }
1452
1453 // Use the inactive tab style along with the current pane's active status to decide how to render
1454 // the filler
1455 let filler_index = self.items.len();
1456 let filler_style = theme.workspace.tab_bar.tab_style(pane_active, false);
1457 enum Filler {}
1458 row.add_child(
1459 dragged_item_receiver::<Filler, _, _>(self, 0, filler_index, true, None, cx, |_, _| {
1460 Empty::new()
1461 .contained()
1462 .with_style(filler_style.container)
1463 .with_border(filler_style.container.border)
1464 })
1465 .flex(1., true)
1466 .into_any_named("filler"),
1467 );
1468
1469 row
1470 }
1471
1472 fn tab_details(&self, cx: &AppContext) -> Vec<usize> {
1473 let mut tab_details = (0..self.items.len()).map(|_| 0).collect::<Vec<_>>();
1474
1475 let mut tab_descriptions = HashMap::default();
1476 let mut done = false;
1477 while !done {
1478 done = true;
1479
1480 // Store item indices by their tab description.
1481 for (ix, (item, detail)) in self.items.iter().zip(&tab_details).enumerate() {
1482 if let Some(description) = item.tab_description(*detail, cx) {
1483 if *detail == 0
1484 || Some(&description) != item.tab_description(detail - 1, cx).as_ref()
1485 {
1486 tab_descriptions
1487 .entry(description)
1488 .or_insert(Vec::new())
1489 .push(ix);
1490 }
1491 }
1492 }
1493
1494 // If two or more items have the same tab description, increase their level
1495 // of detail and try again.
1496 for (_, item_ixs) in tab_descriptions.drain() {
1497 if item_ixs.len() > 1 {
1498 done = false;
1499 for ix in item_ixs {
1500 tab_details[ix] += 1;
1501 }
1502 }
1503 }
1504 }
1505
1506 tab_details
1507 }
1508
1509 fn render_tab(
1510 item: &Box<dyn ItemHandle>,
1511 pane: WeakViewHandle<Pane>,
1512 first: bool,
1513 detail: Option<usize>,
1514 hovered: bool,
1515 tab_style: &theme::Tab,
1516 cx: &mut ViewContext<Self>,
1517 ) -> AnyElement<Self> {
1518 let title = item.tab_content(detail, &tab_style, cx);
1519 Self::render_tab_with_title(title, item, pane, first, hovered, tab_style, cx)
1520 }
1521
1522 fn render_dragged_tab(
1523 item: &Box<dyn ItemHandle>,
1524 pane: WeakViewHandle<Pane>,
1525 first: bool,
1526 detail: Option<usize>,
1527 hovered: bool,
1528 tab_style: &theme::Tab,
1529 cx: &mut ViewContext<Workspace>,
1530 ) -> AnyElement<Workspace> {
1531 let title = item.dragged_tab_content(detail, &tab_style, cx);
1532 Self::render_tab_with_title(title, item, pane, first, hovered, tab_style, cx)
1533 }
1534
1535 fn render_tab_with_title<T: View>(
1536 title: AnyElement<T>,
1537 item: &Box<dyn ItemHandle>,
1538 pane: WeakViewHandle<Pane>,
1539 first: bool,
1540 hovered: bool,
1541 tab_style: &theme::Tab,
1542 cx: &mut ViewContext<T>,
1543 ) -> AnyElement<T> {
1544 let mut container = tab_style.container.clone();
1545 if first {
1546 container.border.left = false;
1547 }
1548
1549 Flex::row()
1550 .with_child({
1551 let diameter = 7.0;
1552 let icon_color = if item.has_conflict(cx) {
1553 Some(tab_style.icon_conflict)
1554 } else if item.is_dirty(cx) {
1555 Some(tab_style.icon_dirty)
1556 } else {
1557 None
1558 };
1559
1560 Canvas::new(move |scene, bounds, _, _, _| {
1561 if let Some(color) = icon_color {
1562 let square = RectF::new(bounds.origin(), vec2f(diameter, diameter));
1563 scene.push_quad(Quad {
1564 bounds: square,
1565 background: Some(color),
1566 border: Default::default(),
1567 corner_radius: diameter / 2.,
1568 });
1569 }
1570 })
1571 .constrained()
1572 .with_width(diameter)
1573 .with_height(diameter)
1574 .aligned()
1575 })
1576 .with_child(title.aligned().contained().with_style(ContainerStyle {
1577 margin: Margin {
1578 left: tab_style.spacing,
1579 right: tab_style.spacing,
1580 ..Default::default()
1581 },
1582 ..Default::default()
1583 }))
1584 .with_child(
1585 if hovered {
1586 let item_id = item.id();
1587 enum TabCloseButton {}
1588 let icon = Svg::new("icons/x_mark_8.svg");
1589 MouseEventHandler::<TabCloseButton, _>::new(item_id, cx, |mouse_state, _| {
1590 if mouse_state.hovered() {
1591 icon.with_color(tab_style.icon_close_active)
1592 } else {
1593 icon.with_color(tab_style.icon_close)
1594 }
1595 })
1596 .with_padding(Padding::uniform(4.))
1597 .with_cursor_style(CursorStyle::PointingHand)
1598 .on_click(MouseButton::Left, {
1599 let pane = pane.clone();
1600 move |_, _, cx| {
1601 let pane = pane.clone();
1602 cx.window_context().defer(move |cx| {
1603 if let Some(pane) = pane.upgrade(cx) {
1604 pane.update(cx, |pane, cx| {
1605 pane.close_item_by_id(item_id, cx).detach_and_log_err(cx);
1606 });
1607 }
1608 });
1609 }
1610 })
1611 .into_any_named("close-tab-icon")
1612 .constrained()
1613 } else {
1614 Empty::new().constrained()
1615 }
1616 .with_width(tab_style.close_icon_width)
1617 .aligned(),
1618 )
1619 .contained()
1620 .with_style(container)
1621 .constrained()
1622 .with_height(tab_style.height)
1623 .into_any()
1624 }
1625
1626 pub fn render_tab_bar_button<F: 'static + Fn(&mut Pane, &mut EventContext<Pane>)>(
1627 index: usize,
1628 icon: &'static str,
1629 tooltip: Option<(String, Option<Box<dyn Action>>)>,
1630 cx: &mut ViewContext<Pane>,
1631 on_click: F,
1632 context_menu: Option<ViewHandle<ContextMenu>>,
1633 ) -> AnyElement<Pane> {
1634 enum TabBarButton {}
1635
1636 let mut button = MouseEventHandler::<TabBarButton, _>::new(index, cx, |mouse_state, cx| {
1637 let theme = &settings::get::<ThemeSettings>(cx).theme.workspace.tab_bar;
1638 let style = theme.pane_button.style_for(mouse_state, false);
1639 Svg::new(icon)
1640 .with_color(style.color)
1641 .constrained()
1642 .with_width(style.icon_width)
1643 .aligned()
1644 .constrained()
1645 .with_width(style.button_width)
1646 .with_height(style.button_width)
1647 })
1648 .with_cursor_style(CursorStyle::PointingHand)
1649 .on_click(MouseButton::Left, move |_, pane, cx| on_click(pane, cx))
1650 .into_any();
1651 if let Some((tooltip, action)) = tooltip {
1652 let tooltip_style = settings::get::<ThemeSettings>(cx).theme.tooltip.clone();
1653 button = button
1654 .with_tooltip::<TabBarButton>(index, tooltip, action, tooltip_style, cx)
1655 .into_any();
1656 }
1657
1658 Stack::new()
1659 .with_child(button)
1660 .with_children(
1661 context_menu.map(|menu| ChildView::new(&menu, cx).aligned().bottom().right()),
1662 )
1663 .flex(1., false)
1664 .into_any_named("tab bar button")
1665 }
1666
1667 fn render_blank_pane(&self, theme: &Theme, _cx: &mut ViewContext<Self>) -> AnyElement<Self> {
1668 let background = theme.workspace.background;
1669 Empty::new()
1670 .contained()
1671 .with_background_color(background)
1672 .into_any()
1673 }
1674
1675 pub fn set_zoomed(&mut self, zoomed: bool, cx: &mut ViewContext<Self>) {
1676 self.zoomed = zoomed;
1677 cx.notify();
1678 }
1679
1680 pub fn is_zoomed(&self) -> bool {
1681 self.zoomed
1682 }
1683}
1684
1685impl Entity for Pane {
1686 type Event = Event;
1687}
1688
1689impl View for Pane {
1690 fn ui_name() -> &'static str {
1691 "Pane"
1692 }
1693
1694 fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
1695 enum MouseNavigationHandler {}
1696
1697 MouseEventHandler::<MouseNavigationHandler, _>::new(0, cx, |_, cx| {
1698 let active_item_index = self.active_item_index;
1699
1700 if let Some(active_item) = self.active_item() {
1701 Flex::column()
1702 .with_child({
1703 let theme = theme::current(cx).clone();
1704
1705 let mut stack = Stack::new();
1706
1707 enum TabBarEventHandler {}
1708 stack.add_child(
1709 MouseEventHandler::<TabBarEventHandler, _>::new(0, cx, |_, _| {
1710 Empty::new()
1711 .contained()
1712 .with_style(theme.workspace.tab_bar.container)
1713 })
1714 .on_down(
1715 MouseButton::Left,
1716 move |_, this, cx| {
1717 this.activate_item(active_item_index, true, true, cx);
1718 },
1719 ),
1720 );
1721
1722 let mut tab_row = Flex::row()
1723 .with_child(self.render_tabs(cx).flex(1., true).into_any_named("tabs"));
1724
1725 if self.is_active {
1726 let render_tab_bar_buttons = self.render_tab_bar_buttons.clone();
1727 tab_row.add_child(
1728 (render_tab_bar_buttons)(self, cx)
1729 .contained()
1730 .with_style(theme.workspace.tab_bar.pane_button_container)
1731 .flex(1., false)
1732 .into_any(),
1733 )
1734 }
1735
1736 stack.add_child(tab_row);
1737 stack
1738 .constrained()
1739 .with_height(theme.workspace.tab_bar.height)
1740 .flex(1., false)
1741 .into_any_named("tab bar")
1742 })
1743 .with_child({
1744 enum PaneContentTabDropTarget {}
1745 dragged_item_receiver::<PaneContentTabDropTarget, _, _>(
1746 self,
1747 0,
1748 self.active_item_index + 1,
1749 !self.can_split,
1750 if self.can_split { Some(100.) } else { None },
1751 cx,
1752 {
1753 let toolbar = self.toolbar.clone();
1754 let toolbar_hidden = toolbar.read(cx).hidden();
1755 move |_, cx| {
1756 Flex::column()
1757 .with_children(
1758 (!toolbar_hidden)
1759 .then(|| ChildView::new(&toolbar, cx).expanded()),
1760 )
1761 .with_child(
1762 ChildView::new(active_item.as_any(), cx).flex(1., true),
1763 )
1764 }
1765 },
1766 )
1767 .flex(1., true)
1768 })
1769 .with_child(ChildView::new(&self.tab_context_menu, cx))
1770 .into_any()
1771 } else {
1772 enum EmptyPane {}
1773 let theme = theme::current(cx).clone();
1774
1775 dragged_item_receiver::<EmptyPane, _, _>(self, 0, 0, false, None, cx, |_, cx| {
1776 self.render_blank_pane(&theme, cx)
1777 })
1778 .on_down(MouseButton::Left, |_, _, cx| {
1779 cx.focus_parent();
1780 })
1781 .into_any()
1782 }
1783 })
1784 .on_down(
1785 MouseButton::Navigate(NavigationDirection::Back),
1786 move |_, pane, cx| {
1787 if let Some(workspace) = pane.workspace.upgrade(cx) {
1788 let pane = cx.weak_handle();
1789 cx.window_context().defer(move |cx| {
1790 workspace.update(cx, |workspace, cx| {
1791 Pane::go_back(workspace, Some(pane), cx).detach_and_log_err(cx)
1792 })
1793 })
1794 }
1795 },
1796 )
1797 .on_down(MouseButton::Navigate(NavigationDirection::Forward), {
1798 move |_, pane, cx| {
1799 if let Some(workspace) = pane.workspace.upgrade(cx) {
1800 let pane = cx.weak_handle();
1801 cx.window_context().defer(move |cx| {
1802 workspace.update(cx, |workspace, cx| {
1803 Pane::go_forward(workspace, Some(pane), cx).detach_and_log_err(cx)
1804 })
1805 })
1806 }
1807 }
1808 })
1809 .into_any_named("pane")
1810 }
1811
1812 fn focus_in(&mut self, focused: AnyViewHandle, cx: &mut ViewContext<Self>) {
1813 if !self.has_focus {
1814 self.has_focus = true;
1815 cx.emit(Event::Focus);
1816 }
1817
1818 self.toolbar.update(cx, |toolbar, cx| {
1819 toolbar.pane_focus_update(true, cx);
1820 });
1821
1822 if let Some(active_item) = self.active_item() {
1823 if cx.is_self_focused() {
1824 // Pane was focused directly. We need to either focus a view inside the active item,
1825 // or focus the active item itself
1826 if let Some(weak_last_focused_view) =
1827 self.last_focused_view_by_item.get(&active_item.id())
1828 {
1829 if let Some(last_focused_view) = weak_last_focused_view.upgrade(cx) {
1830 cx.focus(&last_focused_view);
1831 return;
1832 } else {
1833 self.last_focused_view_by_item.remove(&active_item.id());
1834 }
1835 }
1836
1837 cx.focus(active_item.as_any());
1838 } else if focused != self.tab_bar_context_menu.handle {
1839 self.last_focused_view_by_item
1840 .insert(active_item.id(), focused.downgrade());
1841 }
1842 }
1843 }
1844
1845 fn focus_out(&mut self, _: AnyViewHandle, cx: &mut ViewContext<Self>) {
1846 self.has_focus = false;
1847 self.toolbar.update(cx, |toolbar, cx| {
1848 toolbar.pane_focus_update(false, cx);
1849 });
1850 }
1851
1852 fn update_keymap_context(&self, keymap: &mut KeymapContext, _: &AppContext) {
1853 Self::reset_to_default_keymap_context(keymap);
1854 }
1855}
1856
1857impl ItemNavHistory {
1858 pub fn push<D: 'static + Any>(&self, data: Option<D>, cx: &mut WindowContext) {
1859 self.history.borrow_mut().push(data, self.item.clone(), cx);
1860 }
1861
1862 pub fn pop_backward(&self, cx: &mut WindowContext) -> Option<NavigationEntry> {
1863 self.history.borrow_mut().pop(NavigationMode::GoingBack, cx)
1864 }
1865
1866 pub fn pop_forward(&self, cx: &mut WindowContext) -> Option<NavigationEntry> {
1867 self.history
1868 .borrow_mut()
1869 .pop(NavigationMode::GoingForward, cx)
1870 }
1871}
1872
1873impl NavHistory {
1874 fn set_mode(&mut self, mode: NavigationMode) {
1875 self.mode = mode;
1876 }
1877
1878 fn disable(&mut self) {
1879 self.mode = NavigationMode::Disabled;
1880 }
1881
1882 fn enable(&mut self) {
1883 self.mode = NavigationMode::Normal;
1884 }
1885
1886 fn pop(&mut self, mode: NavigationMode, cx: &mut WindowContext) -> Option<NavigationEntry> {
1887 let entry = match mode {
1888 NavigationMode::Normal | NavigationMode::Disabled | NavigationMode::ClosingItem => {
1889 return None
1890 }
1891 NavigationMode::GoingBack => &mut self.backward_stack,
1892 NavigationMode::GoingForward => &mut self.forward_stack,
1893 NavigationMode::ReopeningClosedItem => &mut self.closed_stack,
1894 }
1895 .pop_back();
1896 if entry.is_some() {
1897 self.did_update(cx);
1898 }
1899 entry
1900 }
1901
1902 fn push<D: 'static + Any>(
1903 &mut self,
1904 data: Option<D>,
1905 item: Rc<dyn WeakItemHandle>,
1906 cx: &mut WindowContext,
1907 ) {
1908 match self.mode {
1909 NavigationMode::Disabled => {}
1910 NavigationMode::Normal | NavigationMode::ReopeningClosedItem => {
1911 if self.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
1912 self.backward_stack.pop_front();
1913 }
1914 self.backward_stack.push_back(NavigationEntry {
1915 item,
1916 data: data.map(|data| Box::new(data) as Box<dyn Any>),
1917 timestamp: self.next_timestamp.fetch_add(1, Ordering::SeqCst),
1918 });
1919 self.forward_stack.clear();
1920 }
1921 NavigationMode::GoingBack => {
1922 if self.forward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
1923 self.forward_stack.pop_front();
1924 }
1925 self.forward_stack.push_back(NavigationEntry {
1926 item,
1927 data: data.map(|data| Box::new(data) as Box<dyn Any>),
1928 timestamp: self.next_timestamp.fetch_add(1, Ordering::SeqCst),
1929 });
1930 }
1931 NavigationMode::GoingForward => {
1932 if self.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
1933 self.backward_stack.pop_front();
1934 }
1935 self.backward_stack.push_back(NavigationEntry {
1936 item,
1937 data: data.map(|data| Box::new(data) as Box<dyn Any>),
1938 timestamp: self.next_timestamp.fetch_add(1, Ordering::SeqCst),
1939 });
1940 }
1941 NavigationMode::ClosingItem => {
1942 if self.closed_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
1943 self.closed_stack.pop_front();
1944 }
1945 self.closed_stack.push_back(NavigationEntry {
1946 item,
1947 data: data.map(|data| Box::new(data) as Box<dyn Any>),
1948 timestamp: self.next_timestamp.fetch_add(1, Ordering::SeqCst),
1949 });
1950 }
1951 }
1952 self.did_update(cx);
1953 }
1954
1955 fn did_update(&self, cx: &mut WindowContext) {
1956 if let Some(pane) = self.pane.upgrade(cx) {
1957 cx.defer(move |cx| {
1958 pane.update(cx, |pane, cx| pane.history_updated(cx));
1959 });
1960 }
1961 }
1962
1963 fn remove_item(&mut self, item_id: usize) {
1964 self.paths_by_item.remove(&item_id);
1965 self.backward_stack
1966 .retain(|entry| entry.item.id() != item_id);
1967 self.forward_stack
1968 .retain(|entry| entry.item.id() != item_id);
1969 self.closed_stack.retain(|entry| entry.item.id() != item_id);
1970 }
1971}
1972
1973impl PaneNavHistory {
1974 pub fn for_each_entry(
1975 &self,
1976 cx: &AppContext,
1977 mut f: impl FnMut(&NavigationEntry, (ProjectPath, Option<PathBuf>)),
1978 ) {
1979 let borrowed_history = self.0.borrow();
1980 borrowed_history
1981 .forward_stack
1982 .iter()
1983 .chain(borrowed_history.backward_stack.iter())
1984 .chain(borrowed_history.closed_stack.iter())
1985 .for_each(|entry| {
1986 if let Some(project_and_abs_path) =
1987 borrowed_history.paths_by_item.get(&entry.item.id())
1988 {
1989 f(entry, project_and_abs_path.clone());
1990 } else if let Some(item) = entry.item.upgrade(cx) {
1991 if let Some(path) = item.project_path(cx) {
1992 f(entry, (path, None));
1993 }
1994 }
1995 })
1996 }
1997}
1998
1999pub struct PaneBackdrop<V: View> {
2000 child_view: usize,
2001 child: AnyElement<V>,
2002}
2003
2004impl<V: View> PaneBackdrop<V> {
2005 pub fn new(pane_item_view: usize, child: AnyElement<V>) -> Self {
2006 PaneBackdrop {
2007 child,
2008 child_view: pane_item_view,
2009 }
2010 }
2011}
2012
2013impl<V: View> Element<V> for PaneBackdrop<V> {
2014 type LayoutState = ();
2015
2016 type PaintState = ();
2017
2018 fn layout(
2019 &mut self,
2020 constraint: gpui::SizeConstraint,
2021 view: &mut V,
2022 cx: &mut LayoutContext<V>,
2023 ) -> (Vector2F, Self::LayoutState) {
2024 let size = self.child.layout(constraint, view, cx);
2025 (size, ())
2026 }
2027
2028 fn paint(
2029 &mut self,
2030 scene: &mut gpui::SceneBuilder,
2031 bounds: RectF,
2032 visible_bounds: RectF,
2033 _: &mut Self::LayoutState,
2034 view: &mut V,
2035 cx: &mut ViewContext<V>,
2036 ) -> Self::PaintState {
2037 let background = theme::current(cx).editor.background;
2038
2039 let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
2040
2041 scene.push_quad(gpui::Quad {
2042 bounds: RectF::new(bounds.origin(), bounds.size()),
2043 background: Some(background),
2044 ..Default::default()
2045 });
2046
2047 let child_view_id = self.child_view;
2048 scene.push_mouse_region(
2049 MouseRegion::new::<Self>(child_view_id, 0, visible_bounds).on_down(
2050 gpui::platform::MouseButton::Left,
2051 move |_, _: &mut V, cx| {
2052 let window_id = cx.window_id();
2053 cx.app_context().focus(window_id, Some(child_view_id))
2054 },
2055 ),
2056 );
2057
2058 scene.paint_layer(Some(bounds), |scene| {
2059 self.child
2060 .paint(scene, bounds.origin(), visible_bounds, view, cx)
2061 })
2062 }
2063
2064 fn rect_for_text_range(
2065 &self,
2066 range_utf16: std::ops::Range<usize>,
2067 _bounds: RectF,
2068 _visible_bounds: RectF,
2069 _layout: &Self::LayoutState,
2070 _paint: &Self::PaintState,
2071 view: &V,
2072 cx: &gpui::ViewContext<V>,
2073 ) -> Option<RectF> {
2074 self.child.rect_for_text_range(range_utf16, view, cx)
2075 }
2076
2077 fn debug(
2078 &self,
2079 _bounds: RectF,
2080 _layout: &Self::LayoutState,
2081 _paint: &Self::PaintState,
2082 view: &V,
2083 cx: &gpui::ViewContext<V>,
2084 ) -> serde_json::Value {
2085 gpui::json::json!({
2086 "type": "Pane Back Drop",
2087 "view": self.child_view,
2088 "child": self.child.debug(view, cx),
2089 })
2090 }
2091}
2092
2093#[cfg(test)]
2094mod tests {
2095 use super::*;
2096 use crate::item::test::{TestItem, TestProjectItem};
2097 use gpui::TestAppContext;
2098 use project::FakeFs;
2099 use settings::SettingsStore;
2100
2101 #[gpui::test]
2102 async fn test_remove_active_empty(cx: &mut TestAppContext) {
2103 init_test(cx);
2104 let fs = FakeFs::new(cx.background());
2105
2106 let project = Project::test(fs, None, cx).await;
2107 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2108 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2109
2110 pane.update(cx, |pane, cx| {
2111 assert!(pane.close_active_item(&CloseActiveItem, cx).is_none())
2112 });
2113 }
2114
2115 #[gpui::test]
2116 async fn test_add_item_with_new_item(cx: &mut TestAppContext) {
2117 cx.foreground().forbid_parking();
2118 init_test(cx);
2119 let fs = FakeFs::new(cx.background());
2120
2121 let project = Project::test(fs, None, cx).await;
2122 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2123 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2124
2125 // 1. Add with a destination index
2126 // a. Add before the active item
2127 set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
2128 workspace.update(cx, |workspace, cx| {
2129 Pane::add_item(
2130 workspace,
2131 &pane,
2132 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
2133 false,
2134 false,
2135 Some(0),
2136 cx,
2137 );
2138 });
2139 assert_item_labels(&pane, ["D*", "A", "B", "C"], cx);
2140
2141 // b. Add after the active item
2142 set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
2143 workspace.update(cx, |workspace, cx| {
2144 Pane::add_item(
2145 workspace,
2146 &pane,
2147 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
2148 false,
2149 false,
2150 Some(2),
2151 cx,
2152 );
2153 });
2154 assert_item_labels(&pane, ["A", "B", "D*", "C"], cx);
2155
2156 // c. Add at the end of the item list (including off the length)
2157 set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
2158 workspace.update(cx, |workspace, cx| {
2159 Pane::add_item(
2160 workspace,
2161 &pane,
2162 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
2163 false,
2164 false,
2165 Some(5),
2166 cx,
2167 );
2168 });
2169 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2170
2171 // 2. Add without a destination index
2172 // a. Add with active item at the start of the item list
2173 set_labeled_items(&workspace, &pane, ["A*", "B", "C"], cx);
2174 workspace.update(cx, |workspace, cx| {
2175 Pane::add_item(
2176 workspace,
2177 &pane,
2178 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
2179 false,
2180 false,
2181 None,
2182 cx,
2183 );
2184 });
2185 set_labeled_items(&workspace, &pane, ["A", "D*", "B", "C"], cx);
2186
2187 // b. Add with active item at the end of the item list
2188 set_labeled_items(&workspace, &pane, ["A", "B", "C*"], cx);
2189 workspace.update(cx, |workspace, cx| {
2190 Pane::add_item(
2191 workspace,
2192 &pane,
2193 Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
2194 false,
2195 false,
2196 None,
2197 cx,
2198 );
2199 });
2200 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2201 }
2202
2203 #[gpui::test]
2204 async fn test_add_item_with_existing_item(cx: &mut TestAppContext) {
2205 cx.foreground().forbid_parking();
2206 init_test(cx);
2207 let fs = FakeFs::new(cx.background());
2208
2209 let project = Project::test(fs, None, cx).await;
2210 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2211 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2212
2213 // 1. Add with a destination index
2214 // 1a. Add before the active item
2215 let [_, _, _, d] = set_labeled_items(&workspace, &pane, ["A", "B*", "C", "D"], cx);
2216 workspace.update(cx, |workspace, cx| {
2217 Pane::add_item(workspace, &pane, d, false, false, Some(0), cx);
2218 });
2219 assert_item_labels(&pane, ["D*", "A", "B", "C"], cx);
2220
2221 // 1b. Add after the active item
2222 let [_, _, _, d] = set_labeled_items(&workspace, &pane, ["A", "B*", "C", "D"], cx);
2223 workspace.update(cx, |workspace, cx| {
2224 Pane::add_item(workspace, &pane, d, false, false, Some(2), cx);
2225 });
2226 assert_item_labels(&pane, ["A", "B", "D*", "C"], cx);
2227
2228 // 1c. Add at the end of the item list (including off the length)
2229 let [a, _, _, _] = set_labeled_items(&workspace, &pane, ["A", "B*", "C", "D"], cx);
2230 workspace.update(cx, |workspace, cx| {
2231 Pane::add_item(workspace, &pane, a, false, false, Some(5), cx);
2232 });
2233 assert_item_labels(&pane, ["B", "C", "D", "A*"], cx);
2234
2235 // 1d. Add same item to active index
2236 let [_, b, _] = set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
2237 workspace.update(cx, |workspace, cx| {
2238 Pane::add_item(workspace, &pane, b, false, false, Some(1), cx);
2239 });
2240 assert_item_labels(&pane, ["A", "B*", "C"], cx);
2241
2242 // 1e. Add item to index after same item in last position
2243 let [_, _, c] = set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
2244 workspace.update(cx, |workspace, cx| {
2245 Pane::add_item(workspace, &pane, c, false, false, Some(2), cx);
2246 });
2247 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2248
2249 // 2. Add without a destination index
2250 // 2a. Add with active item at the start of the item list
2251 let [_, _, _, d] = set_labeled_items(&workspace, &pane, ["A*", "B", "C", "D"], cx);
2252 workspace.update(cx, |workspace, cx| {
2253 Pane::add_item(workspace, &pane, d, false, false, None, cx);
2254 });
2255 assert_item_labels(&pane, ["A", "D*", "B", "C"], cx);
2256
2257 // 2b. Add with active item at the end of the item list
2258 let [a, _, _, _] = set_labeled_items(&workspace, &pane, ["A", "B", "C", "D*"], cx);
2259 workspace.update(cx, |workspace, cx| {
2260 Pane::add_item(workspace, &pane, a, false, false, None, cx);
2261 });
2262 assert_item_labels(&pane, ["B", "C", "D", "A*"], cx);
2263
2264 // 2c. Add active item to active item at end of list
2265 let [_, _, c] = set_labeled_items(&workspace, &pane, ["A", "B", "C*"], cx);
2266 workspace.update(cx, |workspace, cx| {
2267 Pane::add_item(workspace, &pane, c, false, false, None, cx);
2268 });
2269 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2270
2271 // 2d. Add active item to active item at start of list
2272 let [a, _, _] = set_labeled_items(&workspace, &pane, ["A*", "B", "C"], cx);
2273 workspace.update(cx, |workspace, cx| {
2274 Pane::add_item(workspace, &pane, a, false, false, None, cx);
2275 });
2276 assert_item_labels(&pane, ["A*", "B", "C"], cx);
2277 }
2278
2279 #[gpui::test]
2280 async fn test_add_item_with_same_project_entries(cx: &mut TestAppContext) {
2281 cx.foreground().forbid_parking();
2282 init_test(cx);
2283 let fs = FakeFs::new(cx.background());
2284
2285 let project = Project::test(fs, None, cx).await;
2286 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2287 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2288
2289 // singleton view
2290 workspace.update(cx, |workspace, cx| {
2291 let item = TestItem::new()
2292 .with_singleton(true)
2293 .with_label("buffer 1")
2294 .with_project_items(&[TestProjectItem::new(1, "one.txt", cx)]);
2295
2296 Pane::add_item(
2297 workspace,
2298 &pane,
2299 Box::new(cx.add_view(|_| item)),
2300 false,
2301 false,
2302 None,
2303 cx,
2304 );
2305 });
2306 assert_item_labels(&pane, ["buffer 1*"], cx);
2307
2308 // new singleton view with the same project entry
2309 workspace.update(cx, |workspace, cx| {
2310 let item = TestItem::new()
2311 .with_singleton(true)
2312 .with_label("buffer 1")
2313 .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)]);
2314
2315 Pane::add_item(
2316 workspace,
2317 &pane,
2318 Box::new(cx.add_view(|_| item)),
2319 false,
2320 false,
2321 None,
2322 cx,
2323 );
2324 });
2325 assert_item_labels(&pane, ["buffer 1*"], cx);
2326
2327 // new singleton view with different project entry
2328 workspace.update(cx, |workspace, cx| {
2329 let item = TestItem::new()
2330 .with_singleton(true)
2331 .with_label("buffer 2")
2332 .with_project_items(&[TestProjectItem::new(2, "2.txt", cx)]);
2333
2334 Pane::add_item(
2335 workspace,
2336 &pane,
2337 Box::new(cx.add_view(|_| item)),
2338 false,
2339 false,
2340 None,
2341 cx,
2342 );
2343 });
2344 assert_item_labels(&pane, ["buffer 1", "buffer 2*"], cx);
2345
2346 // new multibuffer view with the same project entry
2347 workspace.update(cx, |workspace, cx| {
2348 let item = TestItem::new()
2349 .with_singleton(false)
2350 .with_label("multibuffer 1")
2351 .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)]);
2352
2353 Pane::add_item(
2354 workspace,
2355 &pane,
2356 Box::new(cx.add_view(|_| item)),
2357 false,
2358 false,
2359 None,
2360 cx,
2361 );
2362 });
2363 assert_item_labels(&pane, ["buffer 1", "buffer 2", "multibuffer 1*"], cx);
2364
2365 // another multibuffer view with the same project entry
2366 workspace.update(cx, |workspace, cx| {
2367 let item = TestItem::new()
2368 .with_singleton(false)
2369 .with_label("multibuffer 1b")
2370 .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)]);
2371
2372 Pane::add_item(
2373 workspace,
2374 &pane,
2375 Box::new(cx.add_view(|_| item)),
2376 false,
2377 false,
2378 None,
2379 cx,
2380 );
2381 });
2382 assert_item_labels(
2383 &pane,
2384 ["buffer 1", "buffer 2", "multibuffer 1", "multibuffer 1b*"],
2385 cx,
2386 );
2387 }
2388
2389 #[gpui::test]
2390 async fn test_remove_item_ordering(cx: &mut TestAppContext) {
2391 init_test(cx);
2392 let fs = FakeFs::new(cx.background());
2393
2394 let project = Project::test(fs, None, cx).await;
2395 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2396 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2397
2398 add_labeled_item(&workspace, &pane, "A", false, cx);
2399 add_labeled_item(&workspace, &pane, "B", false, cx);
2400 add_labeled_item(&workspace, &pane, "C", false, cx);
2401 add_labeled_item(&workspace, &pane, "D", false, cx);
2402 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2403
2404 pane.update(cx, |pane, cx| pane.activate_item(1, false, false, cx));
2405 add_labeled_item(&workspace, &pane, "1", false, cx);
2406 assert_item_labels(&pane, ["A", "B", "1*", "C", "D"], cx);
2407
2408 pane.update(cx, |pane, cx| pane.close_active_item(&CloseActiveItem, cx))
2409 .unwrap()
2410 .await
2411 .unwrap();
2412 assert_item_labels(&pane, ["A", "B*", "C", "D"], cx);
2413
2414 pane.update(cx, |pane, cx| pane.activate_item(3, false, false, cx));
2415 assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
2416
2417 pane.update(cx, |pane, cx| pane.close_active_item(&CloseActiveItem, cx))
2418 .unwrap()
2419 .await
2420 .unwrap();
2421 assert_item_labels(&pane, ["A", "B*", "C"], cx);
2422
2423 pane.update(cx, |pane, cx| pane.close_active_item(&CloseActiveItem, cx))
2424 .unwrap()
2425 .await
2426 .unwrap();
2427 assert_item_labels(&pane, ["A", "C*"], cx);
2428
2429 pane.update(cx, |pane, cx| pane.close_active_item(&CloseActiveItem, cx))
2430 .unwrap()
2431 .await
2432 .unwrap();
2433 assert_item_labels(&pane, ["A*"], cx);
2434 }
2435
2436 #[gpui::test]
2437 async fn test_close_inactive_items(cx: &mut TestAppContext) {
2438 init_test(cx);
2439 let fs = FakeFs::new(cx.background());
2440
2441 let project = Project::test(fs, None, cx).await;
2442 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2443 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2444
2445 set_labeled_items(&workspace, &pane, ["A", "B", "C*", "D", "E"], cx);
2446
2447 pane.update(cx, |pane, cx| {
2448 pane.close_inactive_items(&CloseInactiveItems, cx)
2449 })
2450 .unwrap()
2451 .await
2452 .unwrap();
2453 assert_item_labels(&pane, ["C*"], cx);
2454 }
2455
2456 #[gpui::test]
2457 async fn test_close_clean_items(cx: &mut TestAppContext) {
2458 init_test(cx);
2459 let fs = FakeFs::new(cx.background());
2460
2461 let project = Project::test(fs, None, cx).await;
2462 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2463 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2464
2465 add_labeled_item(&workspace, &pane, "A", true, cx);
2466 add_labeled_item(&workspace, &pane, "B", false, cx);
2467 add_labeled_item(&workspace, &pane, "C", true, cx);
2468 add_labeled_item(&workspace, &pane, "D", false, cx);
2469 add_labeled_item(&workspace, &pane, "E", false, cx);
2470 assert_item_labels(&pane, ["A^", "B", "C^", "D", "E*"], cx);
2471
2472 pane.update(cx, |pane, cx| pane.close_clean_items(&CloseCleanItems, cx))
2473 .unwrap()
2474 .await
2475 .unwrap();
2476 assert_item_labels(&pane, ["A^", "C*^"], cx);
2477 }
2478
2479 #[gpui::test]
2480 async fn test_close_items_to_the_left(cx: &mut TestAppContext) {
2481 init_test(cx);
2482 let fs = FakeFs::new(cx.background());
2483
2484 let project = Project::test(fs, None, cx).await;
2485 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2486 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2487
2488 set_labeled_items(&workspace, &pane, ["A", "B", "C*", "D", "E"], cx);
2489
2490 pane.update(cx, |pane, cx| {
2491 pane.close_items_to_the_left(&CloseItemsToTheLeft, cx)
2492 })
2493 .unwrap()
2494 .await
2495 .unwrap();
2496 assert_item_labels(&pane, ["C*", "D", "E"], cx);
2497 }
2498
2499 #[gpui::test]
2500 async fn test_close_items_to_the_right(cx: &mut TestAppContext) {
2501 init_test(cx);
2502 let fs = FakeFs::new(cx.background());
2503
2504 let project = Project::test(fs, None, cx).await;
2505 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2506 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2507
2508 set_labeled_items(&workspace, &pane, ["A", "B", "C*", "D", "E"], cx);
2509
2510 pane.update(cx, |pane, cx| {
2511 pane.close_items_to_the_right(&CloseItemsToTheRight, cx)
2512 })
2513 .unwrap()
2514 .await
2515 .unwrap();
2516 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2517 }
2518
2519 #[gpui::test]
2520 async fn test_close_all_items(cx: &mut TestAppContext) {
2521 init_test(cx);
2522 let fs = FakeFs::new(cx.background());
2523
2524 let project = Project::test(fs, None, cx).await;
2525 let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
2526 let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
2527
2528 add_labeled_item(&workspace, &pane, "A", false, cx);
2529 add_labeled_item(&workspace, &pane, "B", false, cx);
2530 add_labeled_item(&workspace, &pane, "C", false, cx);
2531 assert_item_labels(&pane, ["A", "B", "C*"], cx);
2532
2533 pane.update(cx, |pane, cx| pane.close_all_items(&CloseAllItems, cx))
2534 .unwrap()
2535 .await
2536 .unwrap();
2537 assert_item_labels(&pane, [], cx);
2538 }
2539
2540 fn init_test(cx: &mut TestAppContext) {
2541 cx.update(|cx| {
2542 cx.set_global(SettingsStore::test(cx));
2543 theme::init((), cx);
2544 crate::init_settings(cx);
2545 });
2546 }
2547
2548 fn add_labeled_item(
2549 workspace: &ViewHandle<Workspace>,
2550 pane: &ViewHandle<Pane>,
2551 label: &str,
2552 is_dirty: bool,
2553 cx: &mut TestAppContext,
2554 ) -> Box<ViewHandle<TestItem>> {
2555 workspace.update(cx, |workspace, cx| {
2556 let labeled_item =
2557 Box::new(cx.add_view(|_| TestItem::new().with_label(label).with_dirty(is_dirty)));
2558
2559 Pane::add_item(
2560 workspace,
2561 pane,
2562 labeled_item.clone(),
2563 false,
2564 false,
2565 None,
2566 cx,
2567 );
2568
2569 labeled_item
2570 })
2571 }
2572
2573 fn set_labeled_items<const COUNT: usize>(
2574 workspace: &ViewHandle<Workspace>,
2575 pane: &ViewHandle<Pane>,
2576 labels: [&str; COUNT],
2577 cx: &mut TestAppContext,
2578 ) -> [Box<ViewHandle<TestItem>>; COUNT] {
2579 pane.update(cx, |pane, _| {
2580 pane.items.clear();
2581 });
2582
2583 workspace.update(cx, |workspace, cx| {
2584 let mut active_item_index = 0;
2585
2586 let mut index = 0;
2587 let items = labels.map(|mut label| {
2588 if label.ends_with("*") {
2589 label = label.trim_end_matches("*");
2590 active_item_index = index;
2591 }
2592
2593 let labeled_item = Box::new(cx.add_view(|_| TestItem::new().with_label(label)));
2594 Pane::add_item(
2595 workspace,
2596 pane,
2597 labeled_item.clone(),
2598 false,
2599 false,
2600 None,
2601 cx,
2602 );
2603 index += 1;
2604 labeled_item
2605 });
2606
2607 pane.update(cx, |pane, cx| {
2608 pane.activate_item(active_item_index, false, false, cx)
2609 });
2610
2611 items
2612 })
2613 }
2614
2615 // Assert the item label, with the active item label suffixed with a '*'
2616 fn assert_item_labels<const COUNT: usize>(
2617 pane: &ViewHandle<Pane>,
2618 expected_states: [&str; COUNT],
2619 cx: &mut TestAppContext,
2620 ) {
2621 pane.read_with(cx, |pane, cx| {
2622 let actual_states = pane
2623 .items
2624 .iter()
2625 .enumerate()
2626 .map(|(ix, item)| {
2627 let mut state = item
2628 .as_any()
2629 .downcast_ref::<TestItem>()
2630 .unwrap()
2631 .read(cx)
2632 .label
2633 .clone();
2634 if ix == pane.active_item_index {
2635 state.push('*');
2636 }
2637 if item.is_dirty(cx) {
2638 state.push('^');
2639 }
2640 state
2641 })
2642 .collect::<Vec<_>>();
2643
2644 assert_eq!(
2645 actual_states, expected_states,
2646 "pane items do not match expectation"
2647 );
2648 })
2649 }
2650}