1use crate::{ItemHandle, Pane};
2use gpui::{
3 elements::*, platform::CursorStyle, Action, AnyViewHandle, AppContext, ElementBox, Entity,
4 MutableAppContext, RenderContext, View, ViewContext, ViewHandle, WeakViewHandle,
5};
6use settings::Settings;
7
8pub trait ToolbarItemView: View {
9 fn set_active_pane_item(
10 &mut self,
11 active_pane_item: Option<&dyn crate::ItemHandle>,
12 cx: &mut ViewContext<Self>,
13 ) -> ToolbarItemLocation;
14
15 fn location_for_event(
16 &self,
17 _event: &Self::Event,
18 current_location: ToolbarItemLocation,
19 _cx: &AppContext,
20 ) -> ToolbarItemLocation {
21 current_location
22 }
23}
24
25trait ToolbarItemViewHandle {
26 fn id(&self) -> usize;
27 fn to_any(&self) -> AnyViewHandle;
28 fn set_active_pane_item(
29 &self,
30 active_pane_item: Option<&dyn ItemHandle>,
31 cx: &mut MutableAppContext,
32 ) -> ToolbarItemLocation;
33}
34
35#[derive(Copy, Clone, Debug, PartialEq)]
36pub enum ToolbarItemLocation {
37 Hidden,
38 PrimaryLeft { flex: Option<(f32, bool)> },
39 PrimaryRight { flex: Option<(f32, bool)> },
40 Secondary,
41}
42
43pub struct Toolbar {
44 active_pane_item: Option<Box<dyn ItemHandle>>,
45 pane: WeakViewHandle<Pane>,
46 items: Vec<(Box<dyn ToolbarItemViewHandle>, ToolbarItemLocation)>,
47}
48
49impl Entity for Toolbar {
50 type Event = ();
51}
52
53impl View for Toolbar {
54 fn ui_name() -> &'static str {
55 "Toolbar"
56 }
57
58 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
59 let theme = &cx.global::<Settings>().theme.workspace.toolbar;
60
61 let mut primary_left_items = Vec::new();
62 let mut primary_right_items = Vec::new();
63 let mut secondary_item = None;
64 let spacing = theme.item_spacing;
65
66 for (item, position) in &self.items {
67 match *position {
68 ToolbarItemLocation::Hidden => {}
69 ToolbarItemLocation::PrimaryLeft { flex } => {
70 let left_item = ChildView::new(item.as_ref())
71 .aligned()
72 .contained()
73 .with_margin_right(spacing);
74 if let Some((flex, expanded)) = flex {
75 primary_left_items.push(left_item.flex(flex, expanded).boxed());
76 } else {
77 primary_left_items.push(left_item.boxed());
78 }
79 }
80 ToolbarItemLocation::PrimaryRight { flex } => {
81 let right_item = ChildView::new(item.as_ref())
82 .aligned()
83 .contained()
84 .with_margin_left(spacing)
85 .flex_float();
86 if let Some((flex, expanded)) = flex {
87 primary_right_items.push(right_item.flex(flex, expanded).boxed());
88 } else {
89 primary_right_items.push(right_item.boxed());
90 }
91 }
92 ToolbarItemLocation::Secondary => {
93 secondary_item = Some(
94 ChildView::new(item.as_ref())
95 .constrained()
96 .with_height(theme.height)
97 .boxed(),
98 );
99 }
100 }
101 }
102
103 let pane = self.pane.clone();
104 let mut enable_go_backward = false;
105 let mut enable_go_forward = false;
106 if let Some(pane) = pane.upgrade(cx) {
107 let pane = pane.read(cx);
108 enable_go_backward = pane.can_navigate_backward();
109 enable_go_forward = pane.can_navigate_forward();
110 }
111
112 let container_style = theme.container;
113 let height = theme.height;
114 let button_style = theme.nav_button;
115 let tooltip_style = cx.global::<Settings>().theme.tooltip.clone();
116
117 Flex::column()
118 .with_child(
119 Flex::row()
120 .with_child(nav_button(
121 "icons/arrow-left.svg",
122 button_style,
123 tooltip_style.clone(),
124 enable_go_backward,
125 spacing,
126 super::GoBack {
127 pane: Some(pane.clone()),
128 },
129 super::GoBack { pane: None },
130 "Go Back",
131 cx,
132 ))
133 .with_child(nav_button(
134 "icons/arrow-right.svg",
135 button_style,
136 tooltip_style.clone(),
137 enable_go_forward,
138 spacing,
139 super::GoForward {
140 pane: Some(pane.clone()),
141 },
142 super::GoForward { pane: None },
143 "Go Forward",
144 cx,
145 ))
146 .with_children(primary_left_items)
147 .with_children(primary_right_items)
148 .constrained()
149 .with_height(height)
150 .boxed(),
151 )
152 .with_children(secondary_item)
153 .contained()
154 .with_style(container_style)
155 .boxed()
156 }
157}
158
159fn nav_button<A: Action + Clone>(
160 svg_path: &'static str,
161 style: theme::Interactive<theme::IconButton>,
162 tooltip_style: TooltipStyle,
163 enabled: bool,
164 spacing: f32,
165 action: A,
166 tooltip_action: A,
167 action_name: &str,
168 cx: &mut RenderContext<Toolbar>,
169) -> ElementBox {
170 MouseEventHandler::new::<A, _, _>(0, cx, |state, _| {
171 let style = if enabled {
172 style.style_for(state, false)
173 } else {
174 style.disabled_style()
175 };
176 Svg::new(svg_path)
177 .with_color(style.color)
178 .constrained()
179 .with_width(style.icon_width)
180 .aligned()
181 .contained()
182 .with_style(style.container)
183 .constrained()
184 .with_width(style.button_width)
185 .with_height(style.button_width)
186 .aligned()
187 .boxed()
188 })
189 .with_cursor_style(if enabled {
190 CursorStyle::PointingHand
191 } else {
192 CursorStyle::default()
193 })
194 .on_click(move |_, _, cx| cx.dispatch_action(action.clone()))
195 .with_tooltip::<A, _>(
196 0,
197 action_name.to_string(),
198 Some(Box::new(tooltip_action)),
199 tooltip_style,
200 cx,
201 )
202 .contained()
203 .with_margin_right(spacing)
204 .boxed()
205}
206
207impl Toolbar {
208 pub fn new(pane: WeakViewHandle<Pane>) -> Self {
209 Self {
210 active_pane_item: None,
211 pane,
212 items: Default::default(),
213 }
214 }
215
216 pub fn add_item<T>(&mut self, item: ViewHandle<T>, cx: &mut ViewContext<Self>)
217 where
218 T: 'static + ToolbarItemView,
219 {
220 let location = item.set_active_pane_item(self.active_pane_item.as_deref(), cx);
221 cx.subscribe(&item, |this, item, event, cx| {
222 if let Some((_, current_location)) =
223 this.items.iter_mut().find(|(i, _)| i.id() == item.id())
224 {
225 let new_location = item
226 .read(cx)
227 .location_for_event(event, *current_location, cx);
228 if new_location != *current_location {
229 *current_location = new_location;
230 cx.notify();
231 }
232 }
233 })
234 .detach();
235 self.items.push((Box::new(item), location));
236 cx.notify();
237 }
238
239 pub fn set_active_pane_item(
240 &mut self,
241 pane_item: Option<&dyn ItemHandle>,
242 cx: &mut ViewContext<Self>,
243 ) {
244 self.active_pane_item = pane_item.map(|item| item.boxed_clone());
245 for (toolbar_item, current_location) in self.items.iter_mut() {
246 let new_location = toolbar_item.set_active_pane_item(pane_item, cx);
247 if new_location != *current_location {
248 *current_location = new_location;
249 cx.notify();
250 }
251 }
252 }
253
254 pub fn item_of_type<T: ToolbarItemView>(&self) -> Option<ViewHandle<T>> {
255 self.items
256 .iter()
257 .find_map(|(item, _)| item.to_any().downcast())
258 }
259}
260
261impl<T: ToolbarItemView> ToolbarItemViewHandle for ViewHandle<T> {
262 fn id(&self) -> usize {
263 self.id()
264 }
265
266 fn to_any(&self) -> AnyViewHandle {
267 self.into()
268 }
269
270 fn set_active_pane_item(
271 &self,
272 active_pane_item: Option<&dyn ItemHandle>,
273 cx: &mut MutableAppContext,
274 ) -> ToolbarItemLocation {
275 self.update(cx, |this, cx| {
276 this.set_active_pane_item(active_pane_item, cx)
277 })
278 }
279}
280
281impl Into<AnyViewHandle> for &dyn ToolbarItemViewHandle {
282 fn into(self) -> AnyViewHandle {
283 self.to_any()
284 }
285}