1use crate::ItemHandle;
2use gpui::{
3 div, AnyView, Div, Entity, EntityId, EventEmitter, ParentElement as _, Render, Styled, View,
4 ViewContext, WindowContext,
5};
6use ui::prelude::*;
7use ui::{h_stack, v_stack, ButtonLike, Color, Icon, IconButton, Label};
8
9pub enum ToolbarItemEvent {
10 ChangeLocation(ToolbarItemLocation),
11}
12
13pub trait ToolbarItemView: Render + EventEmitter<ToolbarItemEvent> {
14 fn set_active_pane_item(
15 &mut self,
16 active_pane_item: Option<&dyn crate::ItemHandle>,
17 cx: &mut ViewContext<Self>,
18 ) -> ToolbarItemLocation;
19
20 fn pane_focus_update(&mut self, _pane_focused: bool, _cx: &mut ViewContext<Self>) {}
21
22 /// Number of times toolbar's height will be repeated to get the effective height.
23 /// Useful when multiple rows one under each other are needed.
24 /// The rows have the same width and act as a whole when reacting to resizes and similar events.
25 fn row_count(&self, _cx: &WindowContext) -> usize {
26 1
27 }
28}
29
30trait ToolbarItemViewHandle: Send {
31 fn id(&self) -> EntityId;
32 fn to_any(&self) -> AnyView;
33 fn set_active_pane_item(
34 &self,
35 active_pane_item: Option<&dyn ItemHandle>,
36 cx: &mut WindowContext,
37 ) -> ToolbarItemLocation;
38 fn focus_changed(&mut self, pane_focused: bool, cx: &mut WindowContext);
39 fn row_count(&self, cx: &WindowContext) -> usize;
40}
41
42#[derive(Copy, Clone, Debug, PartialEq)]
43pub enum ToolbarItemLocation {
44 Hidden,
45 PrimaryLeft,
46 PrimaryRight,
47 Secondary,
48}
49
50pub struct Toolbar {
51 active_item: Option<Box<dyn ItemHandle>>,
52 hidden: bool,
53 can_navigate: bool,
54 items: Vec<(Box<dyn ToolbarItemViewHandle>, ToolbarItemLocation)>,
55}
56
57impl Toolbar {
58 fn left_items(&self) -> impl Iterator<Item = &dyn ToolbarItemViewHandle> {
59 self.items.iter().filter_map(|(item, location)| {
60 if *location == ToolbarItemLocation::PrimaryLeft {
61 Some(item.as_ref())
62 } else {
63 None
64 }
65 })
66 }
67
68 fn right_items(&self) -> impl Iterator<Item = &dyn ToolbarItemViewHandle> {
69 self.items.iter().filter_map(|(item, location)| {
70 if *location == ToolbarItemLocation::PrimaryRight {
71 Some(item.as_ref())
72 } else {
73 None
74 }
75 })
76 }
77}
78
79impl Render for Toolbar {
80 type Element = Div;
81
82 fn render(&mut self, cx: &mut ViewContext<Self>) -> Self::Element {
83 v_stack()
84 .border_b()
85 .border_color(cx.theme().colors().border_variant)
86 .bg(cx.theme().colors().toolbar_background)
87 .child(
88 h_stack()
89 .justify_between()
90 .child(
91 // Toolbar left side
92 h_stack().border().border_color(gpui::red()).p_1().child(
93 ButtonLike::new("breadcrumb")
94 .child(Label::new("crates/workspace2/src/toolbar.rs"))
95 .child(Label::new("›").color(Color::Muted))
96 .child(Label::new("impl Render for Toolbar"))
97 .child(Label::new("›").color(Color::Muted))
98 .child(Label::new("fn render")),
99 ),
100 )
101 // Toolbar right side
102 .child(
103 h_stack()
104 .p_1()
105 .child(
106 div()
107 .border()
108 .border_color(gpui::red())
109 .child(IconButton::new("buffer-search", Icon::MagnifyingGlass)),
110 )
111 .child(
112 div()
113 .border()
114 .border_color(gpui::red())
115 .child(IconButton::new("inline-assist", Icon::MagicWand)),
116 ),
117 ),
118 )
119 .children(self.items.iter().map(|(child, _)| child.to_any()))
120 }
121}
122
123// todo!()
124// impl View for Toolbar {
125// fn ui_name() -> &'static str {
126// "Toolbar"
127// }
128
129// fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
130// let theme = &theme::current(cx).workspace.toolbar;
131
132// let mut primary_left_items = Vec::new();
133// let mut primary_right_items = Vec::new();
134// let mut secondary_item = None;
135// let spacing = theme.item_spacing;
136// let mut primary_items_row_count = 1;
137
138// for (item, position) in &self.items {
139// match *position {
140// ToolbarItemLocation::Hidden => {}
141
142// ToolbarItemLocation::PrimaryLeft { flex } => {
143// primary_items_row_count = primary_items_row_count.max(item.row_count(cx));
144// let left_item = ChildView::new(item.as_any(), cx).aligned();
145// if let Some((flex, expanded)) = flex {
146// primary_left_items.push(left_item.flex(flex, expanded).into_any());
147// } else {
148// primary_left_items.push(left_item.into_any());
149// }
150// }
151
152// ToolbarItemLocation::PrimaryRight { flex } => {
153// primary_items_row_count = primary_items_row_count.max(item.row_count(cx));
154// let right_item = ChildView::new(item.as_any(), cx).aligned().flex_float();
155// if let Some((flex, expanded)) = flex {
156// primary_right_items.push(right_item.flex(flex, expanded).into_any());
157// } else {
158// primary_right_items.push(right_item.into_any());
159// }
160// }
161
162// ToolbarItemLocation::Secondary => {
163// secondary_item = Some(
164// ChildView::new(item.as_any(), cx)
165// .constrained()
166// .with_height(theme.height * item.row_count(cx) as f32)
167// .into_any(),
168// );
169// }
170// }
171// }
172
173// let container_style = theme.container;
174// let height = theme.height * primary_items_row_count as f32;
175
176// let mut primary_items = Flex::row().with_spacing(spacing);
177// primary_items.extend(primary_left_items);
178// primary_items.extend(primary_right_items);
179
180// let mut toolbar = Flex::column();
181// if !primary_items.is_empty() {
182// toolbar.add_child(primary_items.constrained().with_height(height));
183// }
184// if let Some(secondary_item) = secondary_item {
185// toolbar.add_child(secondary_item);
186// }
187
188// if toolbar.is_empty() {
189// toolbar.into_any_named("toolbar")
190// } else {
191// toolbar
192// .contained()
193// .with_style(container_style)
194// .into_any_named("toolbar")
195// }
196// }
197// }
198
199impl Toolbar {
200 pub fn new() -> Self {
201 Self {
202 active_item: None,
203 items: Default::default(),
204 hidden: false,
205 can_navigate: true,
206 }
207 }
208
209 pub fn set_can_navigate(&mut self, can_navigate: bool, cx: &mut ViewContext<Self>) {
210 self.can_navigate = can_navigate;
211 cx.notify();
212 }
213
214 pub fn add_item<T>(&mut self, item: View<T>, cx: &mut ViewContext<Self>)
215 where
216 T: 'static + ToolbarItemView,
217 {
218 let location = item.set_active_pane_item(self.active_item.as_deref(), cx);
219 cx.subscribe(&item, |this, item, event, cx| {
220 if let Some((_, current_location)) =
221 this.items.iter_mut().find(|(i, _)| i.id() == item.id())
222 {
223 match event {
224 ToolbarItemEvent::ChangeLocation(new_location) => {
225 if new_location != current_location {
226 *current_location = *new_location;
227 cx.notify();
228 }
229 }
230 }
231 }
232 })
233 .detach();
234 self.items.push((Box::new(item), location));
235 cx.notify();
236 }
237
238 pub fn set_active_item(&mut self, item: Option<&dyn ItemHandle>, cx: &mut ViewContext<Self>) {
239 self.active_item = item.map(|item| item.boxed_clone());
240 self.hidden = self
241 .active_item
242 .as_ref()
243 .map(|item| !item.show_toolbar(cx))
244 .unwrap_or(false);
245
246 for (toolbar_item, current_location) in self.items.iter_mut() {
247 let new_location = toolbar_item.set_active_pane_item(item, cx);
248 if new_location != *current_location {
249 *current_location = new_location;
250 cx.notify();
251 }
252 }
253 }
254
255 pub fn focus_changed(&mut self, focused: bool, cx: &mut ViewContext<Self>) {
256 for (toolbar_item, _) in self.items.iter_mut() {
257 toolbar_item.focus_changed(focused, cx);
258 }
259 }
260
261 pub fn item_of_type<T: ToolbarItemView>(&self) -> Option<View<T>> {
262 self.items
263 .iter()
264 .find_map(|(item, _)| item.to_any().downcast().ok())
265 }
266
267 pub fn hidden(&self) -> bool {
268 self.hidden
269 }
270}
271
272impl<T: ToolbarItemView> ToolbarItemViewHandle for View<T> {
273 fn id(&self) -> EntityId {
274 self.entity_id()
275 }
276
277 fn to_any(&self) -> AnyView {
278 self.clone().into()
279 }
280
281 fn set_active_pane_item(
282 &self,
283 active_pane_item: Option<&dyn ItemHandle>,
284 cx: &mut WindowContext,
285 ) -> ToolbarItemLocation {
286 self.update(cx, |this, cx| {
287 this.set_active_pane_item(active_pane_item, cx)
288 })
289 }
290
291 fn focus_changed(&mut self, pane_focused: bool, cx: &mut WindowContext) {
292 self.update(cx, |this, cx| {
293 this.pane_focus_update(pane_focused, cx);
294 cx.notify();
295 });
296 }
297
298 fn row_count(&self, cx: &WindowContext) -> usize {
299 self.read(cx).row_count(cx)
300 }
301}
302
303// todo!()
304// impl From<&dyn ToolbarItemViewHandle> for AnyViewHandle {
305// fn from(val: &dyn ToolbarItemViewHandle) -> Self {
306// val.as_any().clone()
307// }
308// }