1use crate::ItemHandle;
2use gpui::{
3 AnyView, Div, Entity, EntityId, EventEmitter, ParentElement as _, Render, Styled, View,
4 ViewContext, WindowContext,
5};
6use theme2::ActiveTheme;
7use ui::{h_stack, v_stack, Button, 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 //dbg!(&self.items.len());
84 v_stack()
85 .border_b()
86 .border_color(cx.theme().colors().border_variant)
87 .bg(cx.theme().colors().toolbar_background)
88 .child(
89 h_stack()
90 .justify_between()
91 .child(
92 // Toolbar left side
93 h_stack()
94 .p_1()
95 .child(Button::new("crates"))
96 .child(Label::new("/").color(Color::Muted))
97 .child(Button::new("workspace2")),
98 )
99 // Toolbar right side
100 .child(
101 h_stack()
102 .p_1()
103 .child(IconButton::new("buffer-search", Icon::MagnifyingGlass))
104 .child(IconButton::new("inline-assist", Icon::MagicWand)),
105 ),
106 )
107 .children(self.items.iter().map(|(child, _)| child.to_any()))
108 }
109}
110
111// todo!()
112// impl View for Toolbar {
113// fn ui_name() -> &'static str {
114// "Toolbar"
115// }
116
117// fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
118// let theme = &theme::current(cx).workspace.toolbar;
119
120// let mut primary_left_items = Vec::new();
121// let mut primary_right_items = Vec::new();
122// let mut secondary_item = None;
123// let spacing = theme.item_spacing;
124// let mut primary_items_row_count = 1;
125
126// for (item, position) in &self.items {
127// match *position {
128// ToolbarItemLocation::Hidden => {}
129
130// ToolbarItemLocation::PrimaryLeft { flex } => {
131// primary_items_row_count = primary_items_row_count.max(item.row_count(cx));
132// let left_item = ChildView::new(item.as_any(), cx).aligned();
133// if let Some((flex, expanded)) = flex {
134// primary_left_items.push(left_item.flex(flex, expanded).into_any());
135// } else {
136// primary_left_items.push(left_item.into_any());
137// }
138// }
139
140// ToolbarItemLocation::PrimaryRight { flex } => {
141// primary_items_row_count = primary_items_row_count.max(item.row_count(cx));
142// let right_item = ChildView::new(item.as_any(), cx).aligned().flex_float();
143// if let Some((flex, expanded)) = flex {
144// primary_right_items.push(right_item.flex(flex, expanded).into_any());
145// } else {
146// primary_right_items.push(right_item.into_any());
147// }
148// }
149
150// ToolbarItemLocation::Secondary => {
151// secondary_item = Some(
152// ChildView::new(item.as_any(), cx)
153// .constrained()
154// .with_height(theme.height * item.row_count(cx) as f32)
155// .into_any(),
156// );
157// }
158// }
159// }
160
161// let container_style = theme.container;
162// let height = theme.height * primary_items_row_count as f32;
163
164// let mut primary_items = Flex::row().with_spacing(spacing);
165// primary_items.extend(primary_left_items);
166// primary_items.extend(primary_right_items);
167
168// let mut toolbar = Flex::column();
169// if !primary_items.is_empty() {
170// toolbar.add_child(primary_items.constrained().with_height(height));
171// }
172// if let Some(secondary_item) = secondary_item {
173// toolbar.add_child(secondary_item);
174// }
175
176// if toolbar.is_empty() {
177// toolbar.into_any_named("toolbar")
178// } else {
179// toolbar
180// .contained()
181// .with_style(container_style)
182// .into_any_named("toolbar")
183// }
184// }
185// }
186
187impl Toolbar {
188 pub fn new() -> Self {
189 Self {
190 active_item: None,
191 items: Default::default(),
192 hidden: false,
193 can_navigate: true,
194 }
195 }
196
197 pub fn set_can_navigate(&mut self, can_navigate: bool, cx: &mut ViewContext<Self>) {
198 self.can_navigate = can_navigate;
199 cx.notify();
200 }
201
202 pub fn add_item<T>(&mut self, item: View<T>, cx: &mut ViewContext<Self>)
203 where
204 T: 'static + ToolbarItemView,
205 {
206 let location = item.set_active_pane_item(self.active_item.as_deref(), cx);
207 cx.subscribe(&item, |this, item, event, cx| {
208 if let Some((_, current_location)) =
209 this.items.iter_mut().find(|(i, _)| i.id() == item.id())
210 {
211 match event {
212 ToolbarItemEvent::ChangeLocation(new_location) => {
213 if new_location != current_location {
214 *current_location = *new_location;
215 cx.notify();
216 }
217 }
218 }
219 }
220 })
221 .detach();
222 self.items.push((Box::new(item), location));
223 cx.notify();
224 }
225
226 pub fn set_active_item(&mut self, item: Option<&dyn ItemHandle>, cx: &mut ViewContext<Self>) {
227 self.active_item = item.map(|item| item.boxed_clone());
228 self.hidden = self
229 .active_item
230 .as_ref()
231 .map(|item| !item.show_toolbar(cx))
232 .unwrap_or(false);
233
234 for (toolbar_item, current_location) in self.items.iter_mut() {
235 let new_location = toolbar_item.set_active_pane_item(item, cx);
236 if new_location != *current_location {
237 *current_location = new_location;
238 cx.notify();
239 }
240 }
241 }
242
243 pub fn focus_changed(&mut self, focused: bool, cx: &mut ViewContext<Self>) {
244 for (toolbar_item, _) in self.items.iter_mut() {
245 toolbar_item.focus_changed(focused, cx);
246 }
247 }
248
249 pub fn item_of_type<T: ToolbarItemView>(&self) -> Option<View<T>> {
250 self.items
251 .iter()
252 .find_map(|(item, _)| item.to_any().downcast().ok())
253 }
254
255 pub fn hidden(&self) -> bool {
256 self.hidden
257 }
258}
259
260impl<T: ToolbarItemView> ToolbarItemViewHandle for View<T> {
261 fn id(&self) -> EntityId {
262 self.entity_id()
263 }
264
265 fn to_any(&self) -> AnyView {
266 self.clone().into()
267 }
268
269 fn set_active_pane_item(
270 &self,
271 active_pane_item: Option<&dyn ItemHandle>,
272 cx: &mut WindowContext,
273 ) -> ToolbarItemLocation {
274 self.update(cx, |this, cx| {
275 this.set_active_pane_item(active_pane_item, cx)
276 })
277 }
278
279 fn focus_changed(&mut self, pane_focused: bool, cx: &mut WindowContext) {
280 self.update(cx, |this, cx| {
281 this.pane_focus_update(pane_focused, cx);
282 cx.notify();
283 });
284 }
285
286 fn row_count(&self, cx: &WindowContext) -> usize {
287 self.read(cx).row_count(cx)
288 }
289}
290
291// todo!()
292// impl From<&dyn ToolbarItemViewHandle> for AnyViewHandle {
293// fn from(val: &dyn ToolbarItemViewHandle) -> Self {
294// val.as_any().clone()
295// }
296// }