1use std::marker::PhantomData;
2use std::path::PathBuf;
3
4use gpui3::Div;
5
6use crate::prelude::*;
7use crate::{h_stack, HighlightedText};
8
9#[derive(Clone)]
10pub struct Symbol(pub Vec<HighlightedText>);
11
12#[derive(Element)]
13pub struct Breadcrumb<S: 'static + Send + Sync + Clone> {
14 state_type: PhantomData<S>,
15 path: PathBuf,
16 symbols: Vec<Symbol>,
17}
18
19impl<S: 'static + Send + Sync + Clone> Breadcrumb<S> {
20 pub fn new(path: PathBuf, symbols: Vec<Symbol>) -> Self {
21 Self {
22 state_type: PhantomData,
23 path,
24 symbols,
25 }
26 }
27
28 fn render_separator(&self, theme: &Theme) -> Div<S> {
29 div()
30 .child(" › ")
31 .text_color(HighlightColor::Default.hsla(theme))
32 }
33
34 fn render(&mut self, view_state: &mut S, cx: &mut ViewContext<S>) -> impl Element<ViewState = S> {
35 let theme = theme(cx);
36
37 let symbols_len = self.symbols.len();
38
39 h_stack()
40 .px_1()
41 // TODO: Read font from theme (or settings?).
42 .font("Zed Mono Extended")
43 .text_sm()
44 .text_color(theme.middle.base.default.foreground)
45 .rounded_md()
46 .hover()
47 .fill(theme.highest.base.hovered.background)
48 .child(self.path.clone().to_str().unwrap().to_string())
49 .child(if !self.symbols.is_empty() {
50 self.render_separator(&theme)
51 } else {
52 div()
53 })
54 .child(
55 div().flex().children(
56 self.symbols
57 .iter()
58 .enumerate()
59 // TODO: Could use something like `intersperse` here instead.
60 .flat_map(|(ix, symbol)| {
61 let mut items =
62 vec![div().flex().children(symbol.0.iter().map(|segment| {
63 div().child(segment.text.clone()).text_color(segment.color)
64 }))];
65
66 let is_last_segment = ix == symbols_len - 1;
67 if !is_last_segment {
68 items.push(self.render_separator(&theme));
69 }
70
71 items
72 })
73 .collect::<Vec<_>>(),
74 ),
75 )
76 }
77}
78
79#[cfg(feature = "stories")]
80pub use stories::*;
81
82#[cfg(feature = "stories")]
83mod stories {
84 use std::str::FromStr;
85
86 use crate::Story;
87
88 use super::*;
89
90 #[derive(Element)]
91 pub struct BreadcrumbStory<S: 'static + Send + Sync + Clone> {
92 state_type: PhantomData<S>,
93 }
94
95 impl<S: 'static + Send + Sync + Clone> BreadcrumbStory<S> {
96 pub fn new() -> Self {
97 Self {
98 state_type: PhantomData,
99 }
100 }
101
102 fn render(&mut self, view_state: &mut S, cx: &mut ViewContext<S>) -> impl Element<ViewState = S> {
103 let theme = theme(cx);
104
105 Story::container(cx)
106 .child(Story::title_for::<_, Breadcrumb<S>>(cx))
107 .child(Story::label(cx, "Default"))
108 .child(Breadcrumb::new(
109 PathBuf::from_str("crates/ui/src/components/toolbar.rs").unwrap(),
110 vec![
111 Symbol(vec![
112 HighlightedText {
113 text: "impl ".to_string(),
114 color: HighlightColor::Keyword.hsla(&theme),
115 },
116 HighlightedText {
117 text: "BreadcrumbStory".to_string(),
118 color: HighlightColor::Function.hsla(&theme),
119 },
120 ]),
121 Symbol(vec![
122 HighlightedText {
123 text: "fn ".to_string(),
124 color: HighlightColor::Keyword.hsla(&theme),
125 },
126 HighlightedText {
127 text: "render".to_string(),
128 color: HighlightColor::Function.hsla(&theme),
129 },
130 ]),
131 ],
132 ))
133 }
134 }
135}