1use std::sync::Arc;
2
3use gpui2::{div, DefiniteLength, Hsla, MouseButton, WindowContext};
4
5use crate::{h_stack, Icon, IconColor, IconElement, Label, LabelColor};
6use crate::{prelude::*, LineHeightStyle};
7
8#[derive(Default, PartialEq, Clone, Copy)]
9pub enum IconPosition {
10 #[default]
11 Left,
12 Right,
13}
14
15#[derive(Default, Copy, Clone, PartialEq)]
16pub enum ButtonVariant {
17 #[default]
18 Ghost,
19 Filled,
20}
21
22impl ButtonVariant {
23 pub fn bg_color(&self, cx: &mut WindowContext) -> Hsla {
24 let theme = theme(cx);
25
26 match self {
27 ButtonVariant::Ghost => theme.ghost_element,
28 ButtonVariant::Filled => theme.filled_element,
29 }
30 }
31
32 pub fn bg_color_hover(&self, cx: &mut WindowContext) -> Hsla {
33 let theme = theme(cx);
34
35 match self {
36 ButtonVariant::Ghost => theme.ghost_element_hover,
37 ButtonVariant::Filled => theme.filled_element_hover,
38 }
39 }
40
41 pub fn bg_color_active(&self, cx: &mut WindowContext) -> Hsla {
42 let theme = theme(cx);
43
44 match self {
45 ButtonVariant::Ghost => theme.ghost_element_active,
46 ButtonVariant::Filled => theme.filled_element_active,
47 }
48 }
49}
50
51pub type ClickHandler<S> = Arc<dyn Fn(&mut S, &mut ViewContext<S>) + Send + Sync>;
52
53struct ButtonHandlers<V: 'static> {
54 click: Option<ClickHandler<V>>,
55}
56
57unsafe impl<S> Send for ButtonHandlers<S> {}
58unsafe impl<S> Sync for ButtonHandlers<S> {}
59
60impl<V: 'static> Default for ButtonHandlers<V> {
61 fn default() -> Self {
62 Self { click: None }
63 }
64}
65
66#[derive(Component)]
67pub struct Button<V: 'static> {
68 disabled: bool,
69 handlers: ButtonHandlers<V>,
70 icon: Option<Icon>,
71 icon_position: Option<IconPosition>,
72 label: SharedString,
73 variant: ButtonVariant,
74 width: Option<DefiniteLength>,
75}
76
77impl<V: 'static> Button<V> {
78 pub fn new(label: impl Into<SharedString>) -> Self {
79 Self {
80 disabled: false,
81 handlers: ButtonHandlers::default(),
82 icon: None,
83 icon_position: None,
84 label: label.into(),
85 variant: Default::default(),
86 width: Default::default(),
87 }
88 }
89
90 pub fn ghost(label: impl Into<SharedString>) -> Self {
91 Self::new(label).variant(ButtonVariant::Ghost)
92 }
93
94 pub fn variant(mut self, variant: ButtonVariant) -> Self {
95 self.variant = variant;
96 self
97 }
98
99 pub fn icon(mut self, icon: Icon) -> Self {
100 self.icon = Some(icon);
101 self
102 }
103
104 pub fn icon_position(mut self, icon_position: IconPosition) -> Self {
105 if self.icon.is_none() {
106 panic!("An icon must be present if an icon_position is provided.");
107 }
108 self.icon_position = Some(icon_position);
109 self
110 }
111
112 pub fn width(mut self, width: Option<DefiniteLength>) -> Self {
113 self.width = width;
114 self
115 }
116
117 pub fn on_click(mut self, handler: ClickHandler<V>) -> Self {
118 self.handlers.click = Some(handler);
119 self
120 }
121
122 pub fn disabled(mut self, disabled: bool) -> Self {
123 self.disabled = disabled;
124 self
125 }
126
127 fn label_color(&self) -> LabelColor {
128 if self.disabled {
129 LabelColor::Disabled
130 } else {
131 Default::default()
132 }
133 }
134
135 fn icon_color(&self) -> IconColor {
136 if self.disabled {
137 IconColor::Disabled
138 } else {
139 Default::default()
140 }
141 }
142
143 fn render_label(&self) -> Label {
144 Label::new(self.label.clone())
145 .color(self.label_color())
146 .line_height_style(LineHeightStyle::UILabel)
147 }
148
149 fn render_icon(&self, icon_color: IconColor) -> Option<IconElement> {
150 self.icon.map(|i| IconElement::new(i).color(icon_color))
151 }
152
153 pub fn render(self, _view: &mut V, cx: &mut ViewContext<V>) -> impl Component<V> {
154 let icon_color = self.icon_color();
155
156 let mut button = h_stack()
157 .relative()
158 .id(SharedString::from(format!("{}", self.label)))
159 .p_1()
160 .text_size(ui_size(cx, 1.))
161 .rounded_md()
162 .bg(self.variant.bg_color(cx))
163 .hover(|style| style.bg(self.variant.bg_color_hover(cx)))
164 .active(|style| style.bg(self.variant.bg_color_active(cx)));
165
166 match (self.icon, self.icon_position) {
167 (Some(_), Some(IconPosition::Left)) => {
168 button = button
169 .gap_1()
170 .child(self.render_label())
171 .children(self.render_icon(icon_color))
172 }
173 (Some(_), Some(IconPosition::Right)) => {
174 button = button
175 .gap_1()
176 .children(self.render_icon(icon_color))
177 .child(self.render_label())
178 }
179 (_, _) => button = button.child(self.render_label()),
180 }
181
182 if let Some(width) = self.width {
183 button = button.w(width).justify_center();
184 }
185
186 if let Some(click_handler) = self.handlers.click.clone() {
187 button = button.on_mouse_down(MouseButton::Left, move |state, event, cx| {
188 click_handler(state, cx);
189 });
190 }
191
192 button
193 }
194}
195
196#[derive(Component)]
197pub struct ButtonGroup<V: 'static> {
198 buttons: Vec<Button<V>>,
199}
200
201impl<V: 'static> ButtonGroup<V> {
202 pub fn new(buttons: Vec<Button<V>>) -> Self {
203 Self { buttons }
204 }
205
206 fn render(self, _view: &mut V, cx: &mut ViewContext<V>) -> impl Component<V> {
207 let mut el = h_stack().text_size(ui_size(cx, 1.));
208
209 for button in self.buttons {
210 el = el.child(button.render(_view, cx));
211 }
212
213 el
214 }
215}
216
217#[cfg(feature = "stories")]
218pub use stories::*;
219
220#[cfg(feature = "stories")]
221mod stories {
222 use gpui2::rems;
223 use strum::IntoEnumIterator;
224
225 use crate::{h_stack, v_stack, LabelColor, Story};
226
227 use super::*;
228
229 #[derive(Component)]
230 pub struct ButtonStory;
231
232 impl ButtonStory {
233 fn render<V: 'static>(self, _view: &mut V, cx: &mut ViewContext<V>) -> impl Component<V> {
234 let states = InteractionState::iter();
235
236 Story::container(cx)
237 .child(Story::title_for::<_, Button<V>>(cx))
238 .child(
239 div()
240 .flex()
241 .gap_8()
242 .child(
243 div()
244 .child(Story::label(cx, "Ghost (Default)"))
245 .child(h_stack().gap_2().children(states.clone().map(|state| {
246 v_stack()
247 .gap_1()
248 .child(
249 Label::new(state.to_string()).color(LabelColor::Muted),
250 )
251 .child(
252 Button::new("Label").variant(ButtonVariant::Ghost), // .state(state),
253 )
254 })))
255 .child(Story::label(cx, "Ghost – Left Icon"))
256 .child(h_stack().gap_2().children(states.clone().map(|state| {
257 v_stack()
258 .gap_1()
259 .child(
260 Label::new(state.to_string()).color(LabelColor::Muted),
261 )
262 .child(
263 Button::new("Label")
264 .variant(ButtonVariant::Ghost)
265 .icon(Icon::Plus)
266 .icon_position(IconPosition::Left), // .state(state),
267 )
268 })))
269 .child(Story::label(cx, "Ghost – Right Icon"))
270 .child(h_stack().gap_2().children(states.clone().map(|state| {
271 v_stack()
272 .gap_1()
273 .child(
274 Label::new(state.to_string()).color(LabelColor::Muted),
275 )
276 .child(
277 Button::new("Label")
278 .variant(ButtonVariant::Ghost)
279 .icon(Icon::Plus)
280 .icon_position(IconPosition::Right), // .state(state),
281 )
282 }))),
283 )
284 .child(
285 div()
286 .child(Story::label(cx, "Filled"))
287 .child(h_stack().gap_2().children(states.clone().map(|state| {
288 v_stack()
289 .gap_1()
290 .child(
291 Label::new(state.to_string()).color(LabelColor::Muted),
292 )
293 .child(
294 Button::new("Label").variant(ButtonVariant::Filled), // .state(state),
295 )
296 })))
297 .child(Story::label(cx, "Filled – Left Button"))
298 .child(h_stack().gap_2().children(states.clone().map(|state| {
299 v_stack()
300 .gap_1()
301 .child(
302 Label::new(state.to_string()).color(LabelColor::Muted),
303 )
304 .child(
305 Button::new("Label")
306 .variant(ButtonVariant::Filled)
307 .icon(Icon::Plus)
308 .icon_position(IconPosition::Left), // .state(state),
309 )
310 })))
311 .child(Story::label(cx, "Filled – Right Button"))
312 .child(h_stack().gap_2().children(states.clone().map(|state| {
313 v_stack()
314 .gap_1()
315 .child(
316 Label::new(state.to_string()).color(LabelColor::Muted),
317 )
318 .child(
319 Button::new("Label")
320 .variant(ButtonVariant::Filled)
321 .icon(Icon::Plus)
322 .icon_position(IconPosition::Right), // .state(state),
323 )
324 }))),
325 )
326 .child(
327 div()
328 .child(Story::label(cx, "Fixed With"))
329 .child(h_stack().gap_2().children(states.clone().map(|state| {
330 v_stack()
331 .gap_1()
332 .child(
333 Label::new(state.to_string()).color(LabelColor::Muted),
334 )
335 .child(
336 Button::new("Label")
337 .variant(ButtonVariant::Filled)
338 // .state(state)
339 .width(Some(rems(6.).into())),
340 )
341 })))
342 .child(Story::label(cx, "Fixed With – Left Icon"))
343 .child(h_stack().gap_2().children(states.clone().map(|state| {
344 v_stack()
345 .gap_1()
346 .child(
347 Label::new(state.to_string()).color(LabelColor::Muted),
348 )
349 .child(
350 Button::new("Label")
351 .variant(ButtonVariant::Filled)
352 // .state(state)
353 .icon(Icon::Plus)
354 .icon_position(IconPosition::Left)
355 .width(Some(rems(6.).into())),
356 )
357 })))
358 .child(Story::label(cx, "Fixed With – Right Icon"))
359 .child(h_stack().gap_2().children(states.clone().map(|state| {
360 v_stack()
361 .gap_1()
362 .child(
363 Label::new(state.to_string()).color(LabelColor::Muted),
364 )
365 .child(
366 Button::new("Label")
367 .variant(ButtonVariant::Filled)
368 // .state(state)
369 .icon(Icon::Plus)
370 .icon_position(IconPosition::Right)
371 .width(Some(rems(6.).into())),
372 )
373 }))),
374 ),
375 )
376 .child(Story::label(cx, "Button with `on_click`"))
377 .child(
378 Button::new("Label")
379 .variant(ButtonVariant::Ghost)
380 .on_click(Arc::new(|_view, _cx| println!("Button clicked."))),
381 )
382 }
383 }
384}