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use std::{cell::RefCell, collections::HashSet, rc::Rc, sync::Arc};
use gpui::{
div, prelude::FluentBuilder as _, rems, AnyElement, App, ElementId, InteractiveElement as _,
IntoElement, ParentElement, RenderOnce, SharedString, StatefulInteractiveElement as _, Styled,
Window,
};
use crate::{h_flex, v_flex, ActiveTheme as _, Icon, IconName, Sizable, Size};
/// Accordion element.
#[derive(IntoElement)]
pub struct Accordion {
id: ElementId,
multiple: bool,
size: Size,
bordered: bool,
disabled: bool,
children: Vec<AccordionItem>,
on_toggle_click: Option<Arc<dyn Fn(&[usize], &mut Window, &mut App) + Send + Sync>>,
}
impl Accordion {
/// Create a new Accordion with the given ID.
pub fn new(id: impl Into<ElementId>) -> Self {
Self {
id: id.into(),
multiple: false,
size: Size::default(),
bordered: true,
children: Vec::new(),
disabled: false,
on_toggle_click: None,
}
}
/// Set whether multiple accordion items can be opened simultaneously, default: false
pub fn multiple(mut self, multiple: bool) -> Self {
self.multiple = multiple;
self
}
/// Set whether the accordion items have borders, default: true
pub fn bordered(mut self, bordered: bool) -> Self {
self.bordered = bordered;
self
}
/// Set whether the accordion is disabled, default: false
pub fn disabled(mut self, disabled: bool) -> Self {
self.disabled = disabled;
self
}
/// Adds an AccordionItem to the Accordion.
pub fn item<F>(mut self, child: F) -> Self
where
F: FnOnce(AccordionItem) -> AccordionItem,
{
let item = child(AccordionItem::new());
self.children.push(item);
self
}
/// Sets the on_toggle_click callback for the AccordionGroup.
///
/// The first argument `Vec<usize>` is the indices of the open accordions.
pub fn on_toggle_click(
mut self,
on_toggle_click: impl Fn(&[usize], &mut Window, &mut App) + Send + Sync + 'static,
) -> Self {
self.on_toggle_click = Some(Arc::new(on_toggle_click));
self
}
}
impl Sizable for Accordion {
fn with_size(mut self, size: impl Into<Size>) -> Self {
self.size = size.into();
self
}
}
impl RenderOnce for Accordion {
fn render(self, _window: &mut Window, _cx: &mut App) -> impl IntoElement {
let open_ixs = Rc::new(RefCell::new(HashSet::new()));
let is_multiple = self.multiple;
v_flex()
.id(self.id)
.size_full()
.when(self.bordered, |this| this.gap_1())
.children(
self.children
.into_iter()
.enumerate()
.map(|(ix, accordion)| {
if accordion.open {
open_ixs.borrow_mut().insert(ix);
}
accordion
.index(ix)
.with_size(self.size)
.bordered(self.bordered)
.disabled(self.disabled)
.on_toggle_click({
let open_ixs = Rc::clone(&open_ixs);
move |open, _, _| {
let mut open_ixs = open_ixs.borrow_mut();
if *open {
if !is_multiple {
open_ixs.clear();
}
open_ixs.insert(ix);
} else {
open_ixs.remove(&ix);
}
}
})
}),
)
.when_some(
self.on_toggle_click.filter(|_| !self.disabled),
move |this, on_toggle_click| {
let open_ixs = Rc::clone(&open_ixs);
this.on_click(move |_, window, cx| {
let open_ixs: Vec<usize> = open_ixs.borrow().iter().map(|&ix| ix).collect();
on_toggle_click(&open_ixs, window, cx);
})
},
)
}
}
/// An Accordion is a vertically stacked list of items, each of which can be expanded to reveal the content associated with it.
#[derive(IntoElement)]
pub struct AccordionItem {
index: usize,
icon: Option<Icon>,
title: AnyElement,
children: Vec<AnyElement>,
open: bool,
size: Size,
bordered: bool,
disabled: bool,
on_toggle_click: Option<Arc<dyn Fn(&bool, &mut Window, &mut App)>>,
}
impl AccordionItem {
/// Create a new AccordionItem.
pub fn new() -> Self {
Self {
index: 0,
icon: None,
title: SharedString::default().into_any_element(),
children: Vec::new(),
open: false,
disabled: false,
on_toggle_click: None,
size: Size::default(),
bordered: true,
}
}
/// Set the icon for the accordion item.
pub fn icon(mut self, icon: impl Into<Icon>) -> Self {
self.icon = Some(icon.into());
self
}
/// Set the title for the accordion item.
pub fn title(mut self, title: impl IntoElement) -> Self {
self.title = title.into_any_element();
self
}
pub fn bordered(mut self, bordered: bool) -> Self {
self.bordered = bordered;
self
}
pub fn open(mut self, open: bool) -> Self {
self.open = open;
self
}
pub fn disabled(mut self, disabled: bool) -> Self {
self.disabled = disabled;
self
}
fn index(mut self, index: usize) -> Self {
self.index = index;
self
}
fn on_toggle_click(
mut self,
on_toggle_click: impl Fn(&bool, &mut Window, &mut App) + 'static,
) -> Self {
self.on_toggle_click = Some(Arc::new(on_toggle_click));
self
}
}
impl ParentElement for AccordionItem {
fn extend(&mut self, elements: impl IntoIterator<Item = AnyElement>) {
self.children.extend(elements);
}
}
impl Sizable for AccordionItem {
fn with_size(mut self, size: impl Into<Size>) -> Self {
self.size = size.into();
self
}
}
impl RenderOnce for AccordionItem {
fn render(self, _: &mut Window, cx: &mut App) -> impl IntoElement {
let text_size = match self.size {
Size::XSmall => rems(0.875),
Size::Small => rems(0.875),
_ => rems(1.0),
};
div().flex_1().child(
v_flex()
.w_full()
.bg(cx.theme().accordion)
.overflow_hidden()
.when(self.bordered, |this| {
this.border_1()
.rounded(cx.theme().radius)
.border_color(cx.theme().border)
})
.text_size(text_size)
.child(
h_flex()
.id(self.index)
.justify_between()
.gap_3()
.map(|this| match self.size {
Size::XSmall => this.py_0().px_1p5(),
Size::Small => this.py_0p5().px_2(),
Size::Large => this.py_1p5().px_4(),
_ => this.py_1().px_3(),
})
.when(self.open, |this| {
this.when(self.bordered, |this| {
this.text_color(cx.theme().foreground)
.border_b_1()
.border_color(cx.theme().border)
})
})
.when(!self.bordered, |this| {
this.border_b_1().border_color(cx.theme().border)
})
.child(
h_flex()
.items_center()
.map(|this| match self.size {
Size::XSmall => this.gap_1(),
Size::Small => this.gap_1(),
_ => this.gap_2(),
})
.when_some(self.icon, |this, icon| {
this.child(
icon.with_size(self.size)
.text_color(cx.theme().muted_foreground),
)
})
.child(self.title),
)
.when(!self.disabled, |this| {
this.hover(|this| this.bg(cx.theme().accordion_hover))
.child(
Icon::new(if self.open {
IconName::ChevronUp
} else {
IconName::ChevronDown
})
.xsmall()
.text_color(cx.theme().muted_foreground),
)
.when_some(self.on_toggle_click, |this, on_toggle_click| {
this.on_click({
move |_, window, cx| {
on_toggle_click(&!self.open, window, cx);
}
})
})
}),
)
.when(self.open, |this| {
this.child(
div()
.map(|this| match self.size {
Size::XSmall => this.p_1p5(),
Size::Small => this.p_2(),
Size::Large => this.p_4(),
_ => this.p_3(),
})
.children(self.children),
)
}),
)
}
}