use crate::{prelude::*, Avatar};use gpui::{AnyElement, StyleRefinement};use smallvec::SmallVec; /// A facepile is a collection of faces stacked horizontally–/// always with the leftmost face on top and descending in z-index////// Facepiles are used to display a group of people or things,/// such as a list of participants in a collaboration session.#[derive(IntoElement, IntoComponent)]pub struct Facepile {    base: Div,    faces: SmallVec<[AnyElement; 2]>,} impl Facepile {    /// Creates a new empty facepile.    pub fn empty() -> Self {        Self::new(SmallVec::new())    }     /// Creates a new facepile with the given faces.    pub fn new(faces: SmallVec<[AnyElement; 2]>) -> Self {        Self { base: div(), faces }    }} impl ParentElement for Facepile {    fn extend(&mut self, elements: impl IntoIterator<Item = AnyElement>) {        self.faces.extend(elements);    }} // Style methods.impl Facepile {    fn style(&mut self) -> &mut StyleRefinement {        self.base.style()    }     gpui::padding_style_methods!({        visibility: pub    });} impl RenderOnce for Facepile {    fn render(self, _window: &mut Window, _cx: &mut App) -> impl IntoElement {        // Lay the faces out in reverse so they overlap in the desired order (left to right, front to back)        self.base            .flex()            .flex_row_reverse()            .items_center()            .justify_start()            .children(                self.faces                    .into_iter()                    .enumerate()                    .rev()                    .map(|(ix, player)| div().when(ix > 0, |div| div.ml_neg_1()).child(player)),            )    }} impl ComponentPreview for Facepile {    fn preview(_window: &mut Window, _cx: &App) -> AnyElement {        let faces: [&'static str; 6] = [            "https://avatars.githubusercontent.com/u/326587?s=60&v=4",            "https://avatars.githubusercontent.com/u/2280405?s=60&v=4",            "https://avatars.githubusercontent.com/u/1789?s=60&v=4",            "https://avatars.githubusercontent.com/u/67129314?s=60&v=4",            "https://avatars.githubusercontent.com/u/482957?s=60&v=4",            "https://avatars.githubusercontent.com/u/1714999?s=60&v=4",        ];         v_flex()            .gap_6()            .children(vec![                example_group_with_title(                    "Facepile Examples",                    vec![                        single_example(                            "Default",                            Facepile::new(                                faces                                    .iter()                                    .map(|&url| Avatar::new(url).into_any_element())                                    .collect(),                            )                            .into_any_element(),                        ),                        single_example(                            "Custom Size",                            Facepile::new(                                faces                                    .iter()                                    .map(|&url| Avatar::new(url).size(px(24.)).into_any_element())                                    .collect(),                            )                            .into_any_element(),                        ),                    ],                ),                example_group_with_title(                    "Special Cases",                    vec![                        single_example("Empty Facepile", Facepile::empty().into_any_element()),                        single_example(                            "Single Face",                            Facepile::new(vec![Avatar::new(faces[0]).into_any_element()].into())                                .into_any_element(),                        ),                    ],                ),            ])            .into_any_element()    }}