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 super::*;
223 use crate::{h_stack, v_stack, LabelColor, Story};
224 use gpui2::{rems, Div, Render};
225 use strum::IntoEnumIterator;
226
227 pub struct ButtonStory;
228
229 impl Render for ButtonStory {
230 type Element = Div<Self>;
231
232 fn render(&mut self, cx: &mut ViewContext<Self>) -> Self::Element {
233 let states = InteractionState::iter();
234
235 Story::container(cx)
236 .child(Story::title_for::<_, Button<Self>>(cx))
237 .child(
238 div()
239 .flex()
240 .gap_8()
241 .child(
242 div()
243 .child(Story::label(cx, "Ghost (Default)"))
244 .child(h_stack().gap_2().children(states.clone().map(|state| {
245 v_stack()
246 .gap_1()
247 .child(
248 Label::new(state.to_string()).color(LabelColor::Muted),
249 )
250 .child(
251 Button::new("Label").variant(ButtonVariant::Ghost), // .state(state),
252 )
253 })))
254 .child(Story::label(cx, "Ghost – Left Icon"))
255 .child(h_stack().gap_2().children(states.clone().map(|state| {
256 v_stack()
257 .gap_1()
258 .child(
259 Label::new(state.to_string()).color(LabelColor::Muted),
260 )
261 .child(
262 Button::new("Label")
263 .variant(ButtonVariant::Ghost)
264 .icon(Icon::Plus)
265 .icon_position(IconPosition::Left), // .state(state),
266 )
267 })))
268 .child(Story::label(cx, "Ghost – Right Icon"))
269 .child(h_stack().gap_2().children(states.clone().map(|state| {
270 v_stack()
271 .gap_1()
272 .child(
273 Label::new(state.to_string()).color(LabelColor::Muted),
274 )
275 .child(
276 Button::new("Label")
277 .variant(ButtonVariant::Ghost)
278 .icon(Icon::Plus)
279 .icon_position(IconPosition::Right), // .state(state),
280 )
281 }))),
282 )
283 .child(
284 div()
285 .child(Story::label(cx, "Filled"))
286 .child(h_stack().gap_2().children(states.clone().map(|state| {
287 v_stack()
288 .gap_1()
289 .child(
290 Label::new(state.to_string()).color(LabelColor::Muted),
291 )
292 .child(
293 Button::new("Label").variant(ButtonVariant::Filled), // .state(state),
294 )
295 })))
296 .child(Story::label(cx, "Filled – Left Button"))
297 .child(h_stack().gap_2().children(states.clone().map(|state| {
298 v_stack()
299 .gap_1()
300 .child(
301 Label::new(state.to_string()).color(LabelColor::Muted),
302 )
303 .child(
304 Button::new("Label")
305 .variant(ButtonVariant::Filled)
306 .icon(Icon::Plus)
307 .icon_position(IconPosition::Left), // .state(state),
308 )
309 })))
310 .child(Story::label(cx, "Filled – Right Button"))
311 .child(h_stack().gap_2().children(states.clone().map(|state| {
312 v_stack()
313 .gap_1()
314 .child(
315 Label::new(state.to_string()).color(LabelColor::Muted),
316 )
317 .child(
318 Button::new("Label")
319 .variant(ButtonVariant::Filled)
320 .icon(Icon::Plus)
321 .icon_position(IconPosition::Right), // .state(state),
322 )
323 }))),
324 )
325 .child(
326 div()
327 .child(Story::label(cx, "Fixed With"))
328 .child(h_stack().gap_2().children(states.clone().map(|state| {
329 v_stack()
330 .gap_1()
331 .child(
332 Label::new(state.to_string()).color(LabelColor::Muted),
333 )
334 .child(
335 Button::new("Label")
336 .variant(ButtonVariant::Filled)
337 // .state(state)
338 .width(Some(rems(6.).into())),
339 )
340 })))
341 .child(Story::label(cx, "Fixed With – Left Icon"))
342 .child(h_stack().gap_2().children(states.clone().map(|state| {
343 v_stack()
344 .gap_1()
345 .child(
346 Label::new(state.to_string()).color(LabelColor::Muted),
347 )
348 .child(
349 Button::new("Label")
350 .variant(ButtonVariant::Filled)
351 // .state(state)
352 .icon(Icon::Plus)
353 .icon_position(IconPosition::Left)
354 .width(Some(rems(6.).into())),
355 )
356 })))
357 .child(Story::label(cx, "Fixed With – Right Icon"))
358 .child(h_stack().gap_2().children(states.clone().map(|state| {
359 v_stack()
360 .gap_1()
361 .child(
362 Label::new(state.to_string()).color(LabelColor::Muted),
363 )
364 .child(
365 Button::new("Label")
366 .variant(ButtonVariant::Filled)
367 // .state(state)
368 .icon(Icon::Plus)
369 .icon_position(IconPosition::Right)
370 .width(Some(rems(6.).into())),
371 )
372 }))),
373 ),
374 )
375 .child(Story::label(cx, "Button with `on_click`"))
376 .child(
377 Button::new("Label")
378 .variant(ButtonVariant::Ghost)
379 .on_click(Arc::new(|_view, _cx| println!("Button clicked."))),
380 )
381 }
382 }
383}