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