1use crate::{StatusItemView, Workspace};
2use context_menu::{ContextMenu, ContextMenuItem};
3use gpui::{
4 elements::*, impl_actions, platform::CursorStyle, platform::MouseButton, AnyViewHandle,
5 AppContext, Axis, Entity, Subscription, View, ViewContext, ViewHandle, WeakViewHandle,
6 WindowContext,
7};
8use serde::Deserialize;
9use std::rc::Rc;
10use theme::ThemeSettings;
11
12pub trait Panel: View {
13 fn position(&self, cx: &WindowContext) -> DockPosition;
14 fn position_is_valid(&self, position: DockPosition) -> bool;
15 fn set_position(&mut self, position: DockPosition, cx: &mut ViewContext<Self>);
16 fn size(&self, cx: &WindowContext) -> f32;
17 fn set_size(&mut self, size: f32, cx: &mut ViewContext<Self>);
18 fn icon_path(&self) -> &'static str;
19 fn icon_tooltip(&self) -> String;
20 fn icon_label(&self, _: &WindowContext) -> Option<String> {
21 None
22 }
23 fn should_change_position_on_event(_: &Self::Event) -> bool;
24 fn should_zoom_in_on_event(_: &Self::Event) -> bool;
25 fn should_zoom_out_on_event(_: &Self::Event) -> bool;
26 fn is_zoomed(&self, cx: &WindowContext) -> bool;
27 fn set_zoomed(&mut self, zoomed: bool, cx: &mut ViewContext<Self>);
28 fn set_active(&mut self, active: bool, cx: &mut ViewContext<Self>);
29 fn should_activate_on_event(_: &Self::Event) -> bool;
30 fn should_close_on_event(_: &Self::Event) -> bool;
31 fn has_focus(&self, cx: &WindowContext) -> bool;
32 fn is_focus_event(_: &Self::Event) -> bool;
33}
34
35pub trait PanelHandle {
36 fn id(&self) -> usize;
37 fn position(&self, cx: &WindowContext) -> DockPosition;
38 fn position_is_valid(&self, position: DockPosition, cx: &WindowContext) -> bool;
39 fn set_position(&self, position: DockPosition, cx: &mut WindowContext);
40 fn is_zoomed(&self, cx: &WindowContext) -> bool;
41 fn set_zoomed(&self, zoomed: bool, cx: &mut WindowContext);
42 fn set_active(&self, active: bool, cx: &mut WindowContext);
43 fn size(&self, cx: &WindowContext) -> f32;
44 fn set_size(&self, size: f32, cx: &mut WindowContext);
45 fn icon_path(&self, cx: &WindowContext) -> &'static str;
46 fn icon_tooltip(&self, cx: &WindowContext) -> String;
47 fn icon_label(&self, cx: &WindowContext) -> Option<String>;
48 fn has_focus(&self, cx: &WindowContext) -> bool;
49 fn as_any(&self) -> &AnyViewHandle;
50}
51
52impl<T> PanelHandle for ViewHandle<T>
53where
54 T: Panel,
55{
56 fn id(&self) -> usize {
57 self.id()
58 }
59
60 fn position(&self, cx: &WindowContext) -> DockPosition {
61 self.read(cx).position(cx)
62 }
63
64 fn position_is_valid(&self, position: DockPosition, cx: &WindowContext) -> bool {
65 self.read(cx).position_is_valid(position)
66 }
67
68 fn set_position(&self, position: DockPosition, cx: &mut WindowContext) {
69 self.update(cx, |this, cx| this.set_position(position, cx))
70 }
71
72 fn size(&self, cx: &WindowContext) -> f32 {
73 self.read(cx).size(cx)
74 }
75
76 fn set_size(&self, size: f32, cx: &mut WindowContext) {
77 self.update(cx, |this, cx| this.set_size(size, cx))
78 }
79
80 fn is_zoomed(&self, cx: &WindowContext) -> bool {
81 self.read(cx).is_zoomed(cx)
82 }
83
84 fn set_zoomed(&self, zoomed: bool, cx: &mut WindowContext) {
85 self.update(cx, |this, cx| this.set_zoomed(zoomed, cx))
86 }
87
88 fn set_active(&self, active: bool, cx: &mut WindowContext) {
89 self.update(cx, |this, cx| this.set_active(active, cx))
90 }
91
92 fn icon_path(&self, cx: &WindowContext) -> &'static str {
93 self.read(cx).icon_path()
94 }
95
96 fn icon_tooltip(&self, cx: &WindowContext) -> String {
97 self.read(cx).icon_tooltip()
98 }
99
100 fn icon_label(&self, cx: &WindowContext) -> Option<String> {
101 self.read(cx).icon_label(cx)
102 }
103
104 fn has_focus(&self, cx: &WindowContext) -> bool {
105 self.read(cx).has_focus(cx)
106 }
107
108 fn as_any(&self) -> &AnyViewHandle {
109 self
110 }
111}
112
113impl From<&dyn PanelHandle> for AnyViewHandle {
114 fn from(val: &dyn PanelHandle) -> Self {
115 val.as_any().clone()
116 }
117}
118
119pub struct Dock {
120 position: DockPosition,
121 panel_entries: Vec<PanelEntry>,
122 is_open: bool,
123 active_panel_index: usize,
124}
125
126#[derive(Clone, Copy, Debug, Deserialize, PartialEq)]
127pub enum DockPosition {
128 Left,
129 Bottom,
130 Right,
131}
132
133impl DockPosition {
134 fn to_label(&self) -> &'static str {
135 match self {
136 Self::Left => "left",
137 Self::Bottom => "bottom",
138 Self::Right => "right",
139 }
140 }
141
142 fn to_resize_handle_side(self) -> HandleSide {
143 match self {
144 Self::Left => HandleSide::Right,
145 Self::Bottom => HandleSide::Top,
146 Self::Right => HandleSide::Left,
147 }
148 }
149
150 pub fn axis(&self) -> Axis {
151 match self {
152 Self::Left | Self::Right => Axis::Horizontal,
153 Self::Bottom => Axis::Vertical,
154 }
155 }
156}
157
158struct PanelEntry {
159 panel: Rc<dyn PanelHandle>,
160 context_menu: ViewHandle<ContextMenu>,
161 _subscriptions: [Subscription; 2],
162}
163
164pub struct PanelButtons {
165 dock: ViewHandle<Dock>,
166 workspace: WeakViewHandle<Workspace>,
167}
168
169#[derive(Clone, Debug, Deserialize, PartialEq)]
170pub struct TogglePanel {
171 pub dock_position: DockPosition,
172 pub panel_index: usize,
173}
174
175impl_actions!(workspace, [TogglePanel]);
176
177impl Dock {
178 pub fn new(position: DockPosition) -> Self {
179 Self {
180 position,
181 panel_entries: Default::default(),
182 active_panel_index: 0,
183 is_open: false,
184 }
185 }
186
187 pub fn is_open(&self) -> bool {
188 self.is_open
189 }
190
191 pub fn has_focus(&self, cx: &WindowContext) -> bool {
192 self.active_panel()
193 .map_or(false, |panel| panel.has_focus(cx))
194 }
195
196 pub fn panel_index_for_type<T: Panel>(&self) -> Option<usize> {
197 self.panel_entries
198 .iter()
199 .position(|entry| entry.panel.as_any().is::<T>())
200 }
201
202 pub fn panel_index_for_ui_name(&self, ui_name: &str, cx: &AppContext) -> Option<usize> {
203 self.panel_entries.iter().position(|entry| {
204 let panel = entry.panel.as_any();
205 cx.view_ui_name(panel.window_id(), panel.id()) == Some(ui_name)
206 })
207 }
208
209 pub fn active_panel_index(&self) -> usize {
210 self.active_panel_index
211 }
212
213 pub fn set_open(&mut self, open: bool, cx: &mut ViewContext<Self>) {
214 if open != self.is_open {
215 self.is_open = open;
216 if let Some(active_panel) = self.panel_entries.get(self.active_panel_index) {
217 active_panel.panel.set_active(open, cx);
218 }
219
220 cx.notify();
221 }
222 }
223
224 pub fn toggle_open(&mut self, cx: &mut ViewContext<Self>) {
225 self.set_open(!self.is_open, cx);
226 cx.notify();
227 }
228
229 pub fn set_panel_zoomed(
230 &mut self,
231 panel: &AnyViewHandle,
232 zoomed: bool,
233 cx: &mut ViewContext<Self>,
234 ) {
235 for entry in &mut self.panel_entries {
236 if entry.panel.as_any() == panel {
237 if zoomed != entry.panel.is_zoomed(cx) {
238 entry.panel.set_zoomed(zoomed, cx);
239 }
240 } else if entry.panel.is_zoomed(cx) {
241 entry.panel.set_zoomed(false, cx);
242 }
243 }
244
245 cx.notify();
246 }
247
248 pub fn zoom_out(&mut self, cx: &mut ViewContext<Self>) {
249 for entry in &mut self.panel_entries {
250 if entry.panel.is_zoomed(cx) {
251 entry.panel.set_zoomed(false, cx);
252 }
253 }
254 }
255
256 pub fn add_panel<T: Panel>(&mut self, panel: ViewHandle<T>, cx: &mut ViewContext<Self>) {
257 let subscriptions = [
258 cx.observe(&panel, |_, _, cx| cx.notify()),
259 cx.subscribe(&panel, |this, panel, event, cx| {
260 if T::should_activate_on_event(event) {
261 if let Some(ix) = this
262 .panel_entries
263 .iter()
264 .position(|entry| entry.panel.id() == panel.id())
265 {
266 this.set_open(true, cx);
267 this.activate_panel(ix, cx);
268 cx.focus(&panel);
269 }
270 } else if T::should_close_on_event(event)
271 && this.active_panel().map_or(false, |p| p.id() == panel.id())
272 {
273 this.set_open(false, cx);
274 }
275 }),
276 ];
277
278 let dock_view_id = cx.view_id();
279 self.panel_entries.push(PanelEntry {
280 panel: Rc::new(panel),
281 context_menu: cx.add_view(|cx| {
282 let mut menu = ContextMenu::new(dock_view_id, cx);
283 menu.set_position_mode(OverlayPositionMode::Local);
284 menu
285 }),
286 _subscriptions: subscriptions,
287 });
288 cx.notify()
289 }
290
291 pub fn remove_panel<T: Panel>(&mut self, panel: &ViewHandle<T>, cx: &mut ViewContext<Self>) {
292 if let Some(panel_ix) = self
293 .panel_entries
294 .iter()
295 .position(|entry| entry.panel.id() == panel.id())
296 {
297 if panel_ix == self.active_panel_index {
298 self.active_panel_index = 0;
299 self.set_open(false, cx);
300 } else if panel_ix < self.active_panel_index {
301 self.active_panel_index -= 1;
302 }
303 self.panel_entries.remove(panel_ix);
304 cx.notify();
305 }
306 }
307
308 pub fn panels_len(&self) -> usize {
309 self.panel_entries.len()
310 }
311
312 pub fn activate_panel(&mut self, panel_ix: usize, cx: &mut ViewContext<Self>) {
313 if panel_ix != self.active_panel_index {
314 if let Some(active_panel) = self.panel_entries.get(self.active_panel_index) {
315 active_panel.panel.set_active(false, cx);
316 }
317
318 self.active_panel_index = panel_ix;
319 if let Some(active_panel) = self.panel_entries.get(self.active_panel_index) {
320 active_panel.panel.set_active(true, cx);
321 }
322
323 cx.notify();
324 }
325 }
326
327 pub fn active_panel(&self) -> Option<&Rc<dyn PanelHandle>> {
328 let entry = self.active_entry()?;
329 Some(&entry.panel)
330 }
331
332 fn active_entry(&self) -> Option<&PanelEntry> {
333 if self.is_open {
334 self.panel_entries.get(self.active_panel_index)
335 } else {
336 None
337 }
338 }
339
340 pub fn zoomed_panel(&self, cx: &WindowContext) -> Option<Rc<dyn PanelHandle>> {
341 let entry = self.active_entry()?;
342 if entry.panel.is_zoomed(cx) {
343 Some(entry.panel.clone())
344 } else {
345 None
346 }
347 }
348
349 pub fn panel_size(&self, panel: &dyn PanelHandle, cx: &WindowContext) -> Option<f32> {
350 self.panel_entries
351 .iter()
352 .find(|entry| entry.panel.id() == panel.id())
353 .map(|entry| entry.panel.size(cx))
354 }
355
356 pub fn active_panel_size(&self, cx: &WindowContext) -> Option<f32> {
357 if self.is_open {
358 self.panel_entries
359 .get(self.active_panel_index)
360 .map(|entry| entry.panel.size(cx))
361 } else {
362 None
363 }
364 }
365
366 pub fn resize_active_panel(&mut self, size: f32, cx: &mut ViewContext<Self>) {
367 if let Some(entry) = self.panel_entries.get_mut(self.active_panel_index) {
368 entry.panel.set_size(size, cx);
369 cx.notify();
370 }
371 }
372
373 pub fn render_placeholder(&self, cx: &WindowContext) -> AnyElement<Workspace> {
374 if let Some(active_entry) = self.active_entry() {
375 let style = &settings::get::<ThemeSettings>(cx).theme.workspace.dock;
376 Empty::new()
377 .into_any()
378 .contained()
379 .with_style(style.container)
380 .resizable(
381 self.position.to_resize_handle_side(),
382 active_entry.panel.size(cx),
383 |_, _, _| {},
384 )
385 .into_any()
386 } else {
387 Empty::new().into_any()
388 }
389 }
390}
391
392impl Entity for Dock {
393 type Event = ();
394}
395
396impl View for Dock {
397 fn ui_name() -> &'static str {
398 "Dock"
399 }
400
401 fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
402 if let Some(active_entry) = self.active_entry() {
403 let style = &settings::get::<ThemeSettings>(cx).theme.workspace.dock;
404 ChildView::new(active_entry.panel.as_any(), cx)
405 .contained()
406 .with_style(style.container)
407 .resizable(
408 self.position.to_resize_handle_side(),
409 active_entry.panel.size(cx),
410 |dock: &mut Self, size, cx| dock.resize_active_panel(size, cx),
411 )
412 .into_any()
413 } else {
414 Empty::new().into_any()
415 }
416 }
417}
418
419impl PanelButtons {
420 pub fn new(
421 dock: ViewHandle<Dock>,
422 workspace: WeakViewHandle<Workspace>,
423 cx: &mut ViewContext<Self>,
424 ) -> Self {
425 cx.observe(&dock, |_, _, cx| cx.notify()).detach();
426 Self { dock, workspace }
427 }
428}
429
430impl Entity for PanelButtons {
431 type Event = ();
432}
433
434impl View for PanelButtons {
435 fn ui_name() -> &'static str {
436 "PanelButtons"
437 }
438
439 fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
440 let theme = &settings::get::<ThemeSettings>(cx).theme;
441 let tooltip_style = theme.tooltip.clone();
442 let theme = &theme.workspace.status_bar.panel_buttons;
443 let button_style = theme.button.clone();
444 let dock = self.dock.read(cx);
445 let active_ix = dock.active_panel_index;
446 let is_open = dock.is_open;
447 let dock_position = dock.position;
448 let group_style = match dock_position {
449 DockPosition::Left => theme.group_left,
450 DockPosition::Bottom => theme.group_bottom,
451 DockPosition::Right => theme.group_right,
452 };
453 let menu_corner = match dock_position {
454 DockPosition::Left => AnchorCorner::BottomLeft,
455 DockPosition::Bottom | DockPosition::Right => AnchorCorner::BottomRight,
456 };
457
458 let panels = dock
459 .panel_entries
460 .iter()
461 .map(|item| (item.panel.clone(), item.context_menu.clone()))
462 .collect::<Vec<_>>();
463 Flex::row()
464 .with_children(
465 panels
466 .into_iter()
467 .enumerate()
468 .map(|(ix, (view, context_menu))| {
469 let action = TogglePanel {
470 dock_position,
471 panel_index: ix,
472 };
473
474 Stack::new()
475 .with_child(
476 MouseEventHandler::<Self, _>::new(ix, cx, |state, cx| {
477 let is_active = is_open && ix == active_ix;
478 let style = button_style.style_for(state, is_active);
479 Flex::row()
480 .with_child(
481 Svg::new(view.icon_path(cx))
482 .with_color(style.icon_color)
483 .constrained()
484 .with_width(style.icon_size)
485 .aligned(),
486 )
487 .with_children(if let Some(label) = view.icon_label(cx) {
488 Some(
489 Label::new(label, style.label.text.clone())
490 .contained()
491 .with_style(style.label.container)
492 .aligned(),
493 )
494 } else {
495 None
496 })
497 .constrained()
498 .with_height(style.icon_size)
499 .contained()
500 .with_style(style.container)
501 })
502 .with_cursor_style(CursorStyle::PointingHand)
503 .on_click(MouseButton::Left, {
504 let action = action.clone();
505 move |_, this, cx| {
506 if let Some(workspace) = this.workspace.upgrade(cx) {
507 let action = action.clone();
508 cx.window_context().defer(move |cx| {
509 workspace.update(cx, |workspace, cx| {
510 workspace.toggle_panel(&action, cx)
511 });
512 });
513 }
514 }
515 })
516 .on_click(MouseButton::Right, {
517 let view = view.clone();
518 let menu = context_menu.clone();
519 move |_, _, cx| {
520 const POSITIONS: [DockPosition; 3] = [
521 DockPosition::Left,
522 DockPosition::Right,
523 DockPosition::Bottom,
524 ];
525
526 menu.update(cx, |menu, cx| {
527 let items = POSITIONS
528 .into_iter()
529 .filter(|position| {
530 *position != dock_position
531 && view.position_is_valid(*position, cx)
532 })
533 .map(|position| {
534 let view = view.clone();
535 ContextMenuItem::handler(
536 format!("Dock {}", position.to_label()),
537 move |cx| view.set_position(position, cx),
538 )
539 })
540 .collect();
541 menu.show(Default::default(), menu_corner, items, cx);
542 })
543 }
544 })
545 .with_tooltip::<Self>(
546 ix,
547 view.icon_tooltip(cx),
548 Some(Box::new(action)),
549 tooltip_style.clone(),
550 cx,
551 ),
552 )
553 .with_child(ChildView::new(&context_menu, cx))
554 }),
555 )
556 .contained()
557 .with_style(group_style)
558 .into_any()
559 }
560}
561
562impl StatusItemView for PanelButtons {
563 fn set_active_pane_item(
564 &mut self,
565 _: Option<&dyn crate::ItemHandle>,
566 _: &mut ViewContext<Self>,
567 ) {
568 }
569}
570
571#[cfg(test)]
572pub(crate) mod test {
573 use super::*;
574 use gpui::{ViewContext, WindowContext};
575
576 pub enum TestPanelEvent {
577 PositionChanged,
578 Activated,
579 Closed,
580 }
581
582 pub struct TestPanel {
583 pub position: DockPosition,
584 }
585
586 impl Entity for TestPanel {
587 type Event = TestPanelEvent;
588 }
589
590 impl View for TestPanel {
591 fn ui_name() -> &'static str {
592 "TestPanel"
593 }
594
595 fn render(&mut self, _: &mut ViewContext<'_, '_, Self>) -> AnyElement<Self> {
596 Empty::new().into_any()
597 }
598 }
599
600 impl Panel for TestPanel {
601 fn position(&self, _: &gpui::WindowContext) -> super::DockPosition {
602 self.position
603 }
604
605 fn position_is_valid(&self, _: super::DockPosition) -> bool {
606 true
607 }
608
609 fn set_position(&mut self, position: DockPosition, cx: &mut ViewContext<Self>) {
610 self.position = position;
611 cx.emit(TestPanelEvent::PositionChanged);
612 }
613
614 fn is_zoomed(&self, _: &WindowContext) -> bool {
615 unimplemented!()
616 }
617
618 fn set_zoomed(&mut self, _zoomed: bool, _cx: &mut ViewContext<Self>) {
619 unimplemented!()
620 }
621
622 fn set_active(&mut self, _active: bool, _cx: &mut ViewContext<Self>) {
623 unimplemented!()
624 }
625
626 fn size(&self, _: &WindowContext) -> f32 {
627 match self.position.axis() {
628 Axis::Horizontal => 300.,
629 Axis::Vertical => 200.,
630 }
631 }
632
633 fn set_size(&mut self, _: f32, _: &mut ViewContext<Self>) {
634 unimplemented!()
635 }
636
637 fn icon_path(&self) -> &'static str {
638 "icons/test_panel.svg"
639 }
640
641 fn icon_tooltip(&self) -> String {
642 "Test Panel".into()
643 }
644
645 fn should_change_position_on_event(event: &Self::Event) -> bool {
646 matches!(event, TestPanelEvent::PositionChanged)
647 }
648
649 fn should_zoom_in_on_event(_: &Self::Event) -> bool {
650 false
651 }
652
653 fn should_zoom_out_on_event(_: &Self::Event) -> bool {
654 false
655 }
656
657 fn should_activate_on_event(event: &Self::Event) -> bool {
658 matches!(event, TestPanelEvent::Activated)
659 }
660
661 fn should_close_on_event(event: &Self::Event) -> bool {
662 matches!(event, TestPanelEvent::Closed)
663 }
664
665 fn has_focus(&self, _cx: &WindowContext) -> bool {
666 unimplemented!()
667 }
668
669 fn is_focus_event(_: &Self::Event) -> bool {
670 unimplemented!()
671 }
672 }
673}