1use crate::{ItemHandle, Pane};
2use gpui::{
3 elements::*, platform::CursorStyle, platform::MouseButton, Action, AnyViewHandle, AppContext,
4 ElementBox, Entity, 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 fn pane_focus_update(&mut self, _pane_focused: bool, _cx: &mut AppContext) {}
25}
26
27trait ToolbarItemViewHandle {
28 fn id(&self) -> usize;
29 fn as_any(&self) -> &AnyViewHandle;
30 fn set_active_pane_item(
31 &self,
32 active_pane_item: Option<&dyn ItemHandle>,
33 cx: &mut AppContext,
34 ) -> ToolbarItemLocation;
35 fn pane_focus_update(&mut self, pane_focused: bool, cx: &mut AppContext);
36}
37
38#[derive(Copy, Clone, Debug, PartialEq)]
39pub enum ToolbarItemLocation {
40 Hidden,
41 PrimaryLeft { flex: Option<(f32, bool)> },
42 PrimaryRight { flex: Option<(f32, bool)> },
43 Secondary,
44}
45
46pub struct Toolbar {
47 active_pane_item: Option<Box<dyn ItemHandle>>,
48 hidden: bool,
49 pane: WeakViewHandle<Pane>,
50 items: Vec<(Box<dyn ToolbarItemViewHandle>, ToolbarItemLocation)>,
51}
52
53impl Entity for Toolbar {
54 type Event = ();
55}
56
57impl View for Toolbar {
58 fn ui_name() -> &'static str {
59 "Toolbar"
60 }
61
62 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
63 let theme = &cx.global::<Settings>().theme.workspace.toolbar;
64
65 let mut primary_left_items = Vec::new();
66 let mut primary_right_items = Vec::new();
67 let mut secondary_item = None;
68 let spacing = theme.item_spacing;
69
70 for (item, position) in &self.items {
71 match *position {
72 ToolbarItemLocation::Hidden => {}
73
74 ToolbarItemLocation::PrimaryLeft { flex } => {
75 let left_item = ChildView::new(item.as_any(), cx)
76 .aligned()
77 .contained()
78 .with_margin_right(spacing);
79 if let Some((flex, expanded)) = flex {
80 primary_left_items.push(left_item.flex(flex, expanded).boxed());
81 } else {
82 primary_left_items.push(left_item.boxed());
83 }
84 }
85
86 ToolbarItemLocation::PrimaryRight { flex } => {
87 let right_item = ChildView::new(item.as_any(), cx)
88 .aligned()
89 .contained()
90 .with_margin_left(spacing)
91 .flex_float();
92 if let Some((flex, expanded)) = flex {
93 primary_right_items.push(right_item.flex(flex, expanded).boxed());
94 } else {
95 primary_right_items.push(right_item.boxed());
96 }
97 }
98
99 ToolbarItemLocation::Secondary => {
100 secondary_item = Some(
101 ChildView::new(item.as_any(), cx)
102 .constrained()
103 .with_height(theme.height)
104 .boxed(),
105 );
106 }
107 }
108 }
109
110 let pane = self.pane.clone();
111 let mut enable_go_backward = false;
112 let mut enable_go_forward = false;
113 if let Some(pane) = pane.upgrade(cx) {
114 let pane = pane.read(cx);
115 enable_go_backward = pane.can_navigate_backward();
116 enable_go_forward = pane.can_navigate_forward();
117 }
118
119 let container_style = theme.container;
120 let height = theme.height;
121 let button_style = theme.nav_button;
122 let tooltip_style = cx.global::<Settings>().theme.tooltip.clone();
123
124 Flex::column()
125 .with_child(
126 Flex::row()
127 .with_child(nav_button(
128 "icons/arrow_left_16.svg",
129 button_style,
130 tooltip_style.clone(),
131 enable_go_backward,
132 spacing,
133 super::GoBack {
134 pane: Some(pane.clone()),
135 },
136 super::GoBack { pane: None },
137 "Go Back",
138 cx,
139 ))
140 .with_child(nav_button(
141 "icons/arrow_right_16.svg",
142 button_style,
143 tooltip_style,
144 enable_go_forward,
145 spacing,
146 super::GoForward { pane: Some(pane) },
147 super::GoForward { pane: None },
148 "Go Forward",
149 cx,
150 ))
151 .with_children(primary_left_items)
152 .with_children(primary_right_items)
153 .constrained()
154 .with_height(height)
155 .boxed(),
156 )
157 .with_children(secondary_item)
158 .contained()
159 .with_style(container_style)
160 .boxed()
161 }
162}
163
164#[allow(clippy::too_many_arguments)]
165fn nav_button<A: Action + Clone>(
166 svg_path: &'static str,
167 style: theme::Interactive<theme::IconButton>,
168 tooltip_style: TooltipStyle,
169 enabled: bool,
170 spacing: f32,
171 action: A,
172 tooltip_action: A,
173 action_name: &str,
174 cx: &mut RenderContext<Toolbar>,
175) -> ElementBox {
176 MouseEventHandler::<A>::new(0, cx, |state, _| {
177 let style = if enabled {
178 style.style_for(state, false)
179 } else {
180 style.disabled_style()
181 };
182 Svg::new(svg_path)
183 .with_color(style.color)
184 .constrained()
185 .with_width(style.icon_width)
186 .aligned()
187 .contained()
188 .with_style(style.container)
189 .constrained()
190 .with_width(style.button_width)
191 .with_height(style.button_width)
192 .aligned()
193 .boxed()
194 })
195 .with_cursor_style(if enabled {
196 CursorStyle::PointingHand
197 } else {
198 CursorStyle::default()
199 })
200 .on_click(MouseButton::Left, move |_, cx| {
201 cx.dispatch_action(action.clone())
202 })
203 .with_tooltip::<A, _>(
204 0,
205 action_name.to_string(),
206 Some(Box::new(tooltip_action)),
207 tooltip_style,
208 cx,
209 )
210 .contained()
211 .with_margin_right(spacing)
212 .boxed()
213}
214
215impl Toolbar {
216 pub fn new(pane: WeakViewHandle<Pane>) -> Self {
217 Self {
218 active_pane_item: None,
219 pane,
220 items: Default::default(),
221 hidden: false,
222 }
223 }
224
225 pub fn add_item<T>(&mut self, item: ViewHandle<T>, cx: &mut ViewContext<Self>)
226 where
227 T: 'static + ToolbarItemView,
228 {
229 let location = item.set_active_pane_item(self.active_pane_item.as_deref(), cx);
230 cx.subscribe(&item, |this, item, event, cx| {
231 if let Some((_, current_location)) =
232 this.items.iter_mut().find(|(i, _)| i.id() == item.id())
233 {
234 let new_location = item
235 .read(cx)
236 .location_for_event(event, *current_location, cx);
237 if new_location != *current_location {
238 *current_location = new_location;
239 cx.notify();
240 }
241 }
242 })
243 .detach();
244 self.items.push((Box::new(item), location));
245 cx.notify();
246 }
247
248 pub fn set_active_pane_item(
249 &mut self,
250 pane_item: Option<&dyn ItemHandle>,
251 cx: &mut ViewContext<Self>,
252 ) {
253 self.active_pane_item = pane_item.map(|item| item.boxed_clone());
254 self.hidden = self
255 .active_pane_item
256 .as_ref()
257 .map(|item| !item.show_toolbar(cx))
258 .unwrap_or(false);
259
260 for (toolbar_item, current_location) in self.items.iter_mut() {
261 let new_location = toolbar_item.set_active_pane_item(pane_item, cx);
262 if new_location != *current_location {
263 *current_location = new_location;
264 cx.notify();
265 }
266 }
267 }
268
269 pub fn pane_focus_update(&mut self, pane_focused: bool, cx: &mut AppContext) {
270 for (toolbar_item, _) in self.items.iter_mut() {
271 toolbar_item.pane_focus_update(pane_focused, cx);
272 }
273 }
274
275 pub fn item_of_type<T: ToolbarItemView>(&self) -> Option<ViewHandle<T>> {
276 self.items
277 .iter()
278 .find_map(|(item, _)| item.as_any().clone().downcast())
279 }
280
281 pub fn hidden(&self) -> bool {
282 self.hidden
283 }
284}
285
286impl<T: ToolbarItemView> ToolbarItemViewHandle for ViewHandle<T> {
287 fn id(&self) -> usize {
288 self.id()
289 }
290
291 fn as_any(&self) -> &AnyViewHandle {
292 self
293 }
294
295 fn set_active_pane_item(
296 &self,
297 active_pane_item: Option<&dyn ItemHandle>,
298 cx: &mut AppContext,
299 ) -> ToolbarItemLocation {
300 self.update(cx, |this, cx| {
301 this.set_active_pane_item(active_pane_item, cx)
302 })
303 }
304
305 fn pane_focus_update(&mut self, pane_focused: bool, cx: &mut AppContext) {
306 self.update(cx, |this, cx| {
307 this.pane_focus_update(pane_focused, cx);
308 cx.notify();
309 });
310 }
311}
312
313impl From<&dyn ToolbarItemViewHandle> for AnyViewHandle {
314 fn from(val: &dyn ToolbarItemViewHandle) -> Self {
315 val.as_any().clone()
316 }
317}