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