1use std::sync::Arc;
2
3use assistant_slash_command::SlashCommandWorkingSet;
4use gpui::{AnyElement, AnyView, DismissEvent, SharedString, Task, WeakEntity};
5use picker::{Picker, PickerDelegate, PickerEditorPosition};
6use ui::{prelude::*, ListItem, ListItemSpacing, PopoverMenu, PopoverTrigger, Tooltip};
7
8use crate::context_editor::ContextEditor;
9
10#[derive(IntoElement)]
11pub(super) struct SlashCommandSelector<T, TT>
12where
13 T: PopoverTrigger + ButtonCommon,
14 TT: Fn(&mut Window, &mut App) -> AnyView + 'static,
15{
16 working_set: Arc<SlashCommandWorkingSet>,
17 active_context_editor: WeakEntity<ContextEditor>,
18 trigger: T,
19 tooltip: TT,
20}
21
22#[derive(Clone)]
23struct SlashCommandInfo {
24 name: SharedString,
25 description: SharedString,
26 args: Option<SharedString>,
27 icon: IconName,
28}
29
30#[derive(Clone)]
31enum SlashCommandEntry {
32 Info(SlashCommandInfo),
33 Advert {
34 name: SharedString,
35 renderer: fn(&mut Window, &mut App) -> AnyElement,
36 on_confirm: fn(&mut Window, &mut App),
37 },
38}
39
40impl AsRef<str> for SlashCommandEntry {
41 fn as_ref(&self) -> &str {
42 match self {
43 SlashCommandEntry::Info(SlashCommandInfo { name, .. })
44 | SlashCommandEntry::Advert { name, .. } => name,
45 }
46 }
47}
48
49pub(crate) struct SlashCommandDelegate {
50 all_commands: Vec<SlashCommandEntry>,
51 filtered_commands: Vec<SlashCommandEntry>,
52 active_context_editor: WeakEntity<ContextEditor>,
53 selected_index: usize,
54}
55
56impl<T, TT> SlashCommandSelector<T, TT>
57where
58 T: PopoverTrigger + ButtonCommon,
59 TT: Fn(&mut Window, &mut App) -> AnyView + 'static,
60{
61 pub(crate) fn new(
62 working_set: Arc<SlashCommandWorkingSet>,
63 active_context_editor: WeakEntity<ContextEditor>,
64 trigger: T,
65 tooltip: TT,
66 ) -> Self {
67 SlashCommandSelector {
68 working_set,
69 active_context_editor,
70 trigger,
71 tooltip,
72 }
73 }
74}
75
76impl PickerDelegate for SlashCommandDelegate {
77 type ListItem = ListItem;
78
79 fn match_count(&self) -> usize {
80 self.filtered_commands.len()
81 }
82
83 fn selected_index(&self) -> usize {
84 self.selected_index
85 }
86
87 fn set_selected_index(&mut self, ix: usize, _: &mut Window, cx: &mut Context<Picker<Self>>) {
88 self.selected_index = ix.min(self.filtered_commands.len().saturating_sub(1));
89 cx.notify();
90 }
91
92 fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {
93 "Select a command...".into()
94 }
95
96 fn update_matches(
97 &mut self,
98 query: String,
99 window: &mut Window,
100 cx: &mut Context<Picker<Self>>,
101 ) -> Task<()> {
102 let all_commands = self.all_commands.clone();
103 cx.spawn_in(window, |this, mut cx| async move {
104 let filtered_commands = cx
105 .background_executor()
106 .spawn(async move {
107 if query.is_empty() {
108 all_commands
109 } else {
110 all_commands
111 .into_iter()
112 .filter(|model_info| {
113 model_info
114 .as_ref()
115 .to_lowercase()
116 .contains(&query.to_lowercase())
117 })
118 .collect()
119 }
120 })
121 .await;
122
123 this.update_in(&mut cx, |this, window, cx| {
124 this.delegate.filtered_commands = filtered_commands;
125 this.delegate.set_selected_index(0, window, cx);
126 cx.notify();
127 })
128 .ok();
129 })
130 }
131
132 fn separators_after_indices(&self) -> Vec<usize> {
133 let mut ret = vec![];
134 let mut previous_is_advert = false;
135
136 for (index, command) in self.filtered_commands.iter().enumerate() {
137 if previous_is_advert {
138 if let SlashCommandEntry::Info(_) = command {
139 previous_is_advert = false;
140 debug_assert_ne!(
141 index, 0,
142 "index cannot be zero, as we can never have a separator at 0th position"
143 );
144 ret.push(index - 1);
145 }
146 } else {
147 if let SlashCommandEntry::Advert { .. } = command {
148 previous_is_advert = true;
149 if index != 0 {
150 ret.push(index - 1);
151 }
152 }
153 }
154 }
155 ret
156 }
157
158 fn confirm(&mut self, _secondary: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
159 if let Some(command) = self.filtered_commands.get(self.selected_index) {
160 match command {
161 SlashCommandEntry::Info(info) => {
162 self.active_context_editor
163 .update(cx, |context_editor, cx| {
164 context_editor.insert_command(&info.name, window, cx)
165 })
166 .ok();
167 }
168 SlashCommandEntry::Advert { on_confirm, .. } => {
169 on_confirm(window, cx);
170 }
171 }
172 cx.emit(DismissEvent);
173 }
174 }
175
176 fn dismissed(&mut self, _window: &mut Window, _cx: &mut Context<Picker<Self>>) {}
177
178 fn editor_position(&self) -> PickerEditorPosition {
179 PickerEditorPosition::End
180 }
181
182 fn render_match(
183 &self,
184 ix: usize,
185 selected: bool,
186 window: &mut Window,
187 cx: &mut Context<Picker<Self>>,
188 ) -> Option<Self::ListItem> {
189 let command_info = self.filtered_commands.get(ix)?;
190
191 match command_info {
192 SlashCommandEntry::Info(info) => Some(
193 ListItem::new(ix)
194 .inset(true)
195 .spacing(ListItemSpacing::Dense)
196 .toggle_state(selected)
197 .tooltip({
198 let description = info.description.clone();
199 move |_, cx| cx.new(|_| Tooltip::new(description.clone())).into()
200 })
201 .child(
202 v_flex()
203 .group(format!("command-entry-label-{ix}"))
204 .w_full()
205 .py_0p5()
206 .min_w(px(250.))
207 .max_w(px(400.))
208 .child(
209 h_flex()
210 .gap_1p5()
211 .child(Icon::new(info.icon).size(IconSize::XSmall))
212 .child(div().font_buffer(cx).child({
213 let mut label = format!("{}", info.name);
214 if let Some(args) = info.args.as_ref().filter(|_| selected)
215 {
216 label.push_str(&args);
217 }
218 Label::new(label).single_line().size(LabelSize::Small)
219 }))
220 .children(info.args.clone().filter(|_| !selected).map(
221 |args| {
222 div()
223 .font_buffer(cx)
224 .child(
225 Label::new(args)
226 .single_line()
227 .size(LabelSize::Small)
228 .color(Color::Muted),
229 )
230 .visible_on_hover(format!(
231 "command-entry-label-{ix}"
232 ))
233 },
234 )),
235 )
236 .child(
237 Label::new(info.description.clone())
238 .size(LabelSize::Small)
239 .color(Color::Muted)
240 .text_ellipsis(),
241 ),
242 ),
243 ),
244 SlashCommandEntry::Advert { renderer, .. } => Some(
245 ListItem::new(ix)
246 .inset(true)
247 .spacing(ListItemSpacing::Dense)
248 .toggle_state(selected)
249 .child(renderer(window, cx)),
250 ),
251 }
252 }
253}
254
255impl<T, TT> RenderOnce for SlashCommandSelector<T, TT>
256where
257 T: PopoverTrigger + ButtonCommon,
258 TT: Fn(&mut Window, &mut App) -> AnyView + 'static,
259{
260 fn render(self, window: &mut Window, cx: &mut App) -> impl IntoElement {
261 let all_models = self
262 .working_set
263 .featured_command_names(cx)
264 .into_iter()
265 .filter_map(|command_name| {
266 let command = self.working_set.command(&command_name, cx)?;
267 let menu_text = SharedString::from(Arc::from(command.menu_text()));
268 let label = command.label(cx);
269 let args = label.filter_range.end.ne(&label.text.len()).then(|| {
270 SharedString::from(
271 label.text[label.filter_range.end..label.text.len()].to_owned(),
272 )
273 });
274 Some(SlashCommandEntry::Info(SlashCommandInfo {
275 name: command_name.into(),
276 description: menu_text,
277 args,
278 icon: command.icon(),
279 }))
280 })
281 .chain([SlashCommandEntry::Advert {
282 name: "create-your-command".into(),
283 renderer: |_, cx| {
284 v_flex()
285 .w_full()
286 .child(
287 h_flex()
288 .w_full()
289 .font_buffer(cx)
290 .items_center()
291 .justify_between()
292 .child(
293 h_flex()
294 .items_center()
295 .gap_1p5()
296 .child(Icon::new(IconName::Plus).size(IconSize::XSmall))
297 .child(
298 div().font_buffer(cx).child(
299 Label::new("create-your-command")
300 .size(LabelSize::Small),
301 ),
302 ),
303 )
304 .child(
305 Icon::new(IconName::ArrowUpRight)
306 .size(IconSize::XSmall)
307 .color(Color::Muted),
308 ),
309 )
310 .child(
311 Label::new("Create your custom command")
312 .size(LabelSize::Small)
313 .color(Color::Muted),
314 )
315 .into_any_element()
316 },
317 on_confirm: |_, cx| cx.open_url("https://zed.dev/docs/extensions/slash-commands"),
318 }])
319 .collect::<Vec<_>>();
320
321 let delegate = SlashCommandDelegate {
322 all_commands: all_models.clone(),
323 active_context_editor: self.active_context_editor.clone(),
324 filtered_commands: all_models,
325 selected_index: 0,
326 };
327
328 let picker_view = cx.new(|cx| {
329 let picker =
330 Picker::uniform_list(delegate, window, cx).max_height(Some(rems(20.).into()));
331 picker
332 });
333
334 let handle = self
335 .active_context_editor
336 .update(cx, |this, _| this.slash_menu_handle.clone())
337 .ok();
338 PopoverMenu::new("model-switcher")
339 .menu(move |_window, _cx| Some(picker_view.clone()))
340 .trigger_with_tooltip(self.trigger, self.tooltip)
341 .attach(gpui::Corner::TopLeft)
342 .anchor(gpui::Corner::BottomLeft)
343 .offset(gpui::Point {
344 x: px(0.0),
345 y: px(-16.0),
346 })
347 .when_some(handle, |this, handle| this.with_handle(handle))
348 }
349}