1use std::fmt::format;
 2
 3use gpui::{
 4    colors, div, prelude::*, uniform_list, DefaultColor, DefaultThemeAppearance, Hsla, Render,
 5    View, ViewContext, WindowContext,
 6};
 7use story::Story;
 8use strum::IntoEnumIterator;
 9use ui::{
10    h_flex, px, v_flex, AbsoluteLength, ActiveTheme, Color, DefiniteLength, Label, LabelCommon,
11};
12
13const LENGTH: usize = 100;
14
15pub struct IndentGuidesStory {
16    depths: Vec<usize>,
17}
18
19impl IndentGuidesStory {
20    pub fn view(cx: &mut WindowContext) -> View<Self> {
21        let mut depths = Vec::new();
22        depths.push(0);
23        depths.push(1);
24        depths.push(2);
25        for _ in 0..LENGTH - 6 {
26            depths.push(3);
27        }
28        depths.push(2);
29        depths.push(1);
30        depths.push(0);
31
32        cx.new_view(|_cx| Self { depths })
33    }
34}
35
36impl Render for IndentGuidesStory {
37    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
38        Story::container()
39            .child(Story::title("Indent guides"))
40            .child(
41                v_flex().size_full().child(
42                    uniform_list(
43                        cx.view().clone(),
44                        "some-list",
45                        self.depths.len(),
46                        |this, range, cx| {
47                            this.depths
48                                .iter()
49                                .enumerate()
50                                .skip(range.start)
51                                .take(range.end - range.start)
52                                .map(|(i, depth)| {
53                                    div()
54                                        .pl(DefiniteLength::Absolute(AbsoluteLength::Pixels(px(
55                                            16. * (*depth as f32),
56                                        ))))
57                                        .child(Label::new(format!("Item {}", i)).color(Color::Info))
58                                })
59                                .collect()
60                        },
61                    )
62                    .with_sizing_behavior(gpui::ListSizingBehavior::Infer)
63                    .with_decoration(ui::indent_guides(
64                        cx.view().clone(),
65                        px(16.),
66                        ui::IndentGuideColors {
67                            default: Color::Info.color(cx),
68                            hovered: Color::Accent.color(cx),
69                            active: Color::Accent.color(cx),
70                        },
71                        |this, range, cx| {
72                            this.depths
73                                .iter()
74                                .skip(range.start)
75                                .take(range.end - range.start)
76                                .cloned()
77                                .collect()
78                        },
79                    )),
80                ),
81            )
82    }
83}