1use gpui::AnyElement;
 2use smallvec::SmallVec;
 3
 4use crate::{prelude::*, v_flex, Label, ListHeader};
 5
 6#[derive(IntoElement)]
 7pub struct List {
 8    /// Message to display when the list is empty
 9    /// Defaults to "No items"
10    empty_message: SharedString,
11    header: Option<ListHeader>,
12    toggle: Option<bool>,
13    children: SmallVec<[AnyElement; 2]>,
14}
15
16impl List {
17    pub fn new() -> Self {
18        Self {
19            empty_message: "No items".into(),
20            header: None,
21            toggle: None,
22            children: SmallVec::new(),
23        }
24    }
25
26    pub fn empty_message(mut self, empty_message: impl Into<SharedString>) -> Self {
27        self.empty_message = empty_message.into();
28        self
29    }
30
31    pub fn header(mut self, header: impl Into<Option<ListHeader>>) -> Self {
32        self.header = header.into();
33        self
34    }
35
36    pub fn toggle(mut self, toggle: impl Into<Option<bool>>) -> Self {
37        self.toggle = toggle.into();
38        self
39    }
40}
41
42impl ParentElement for List {
43    fn extend(&mut self, elements: impl IntoIterator<Item = AnyElement>) {
44        self.children.extend(elements)
45    }
46}
47
48impl RenderOnce for List {
49    fn render(self, _cx: &mut WindowContext) -> impl IntoElement {
50        v_flex().w_full().py_1().children(self.header).map(|this| {
51            match (self.children.is_empty(), self.toggle) {
52                (false, _) => this.children(self.children),
53                (true, Some(false)) => this,
54                (true, _) => this.child(Label::new(self.empty_message.clone()).color(Color::Muted)),
55            }
56        })
57    }
58}