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//! Dialog component with focus trap and backdrop.
use kael::{prelude::FluentBuilder as _, *};
use std::rc::Rc;
use std::time::Duration;
use crate::animations::easings;
use crate::components::button::{Button, ButtonSize, ButtonVariant};
use crate::theme::use_theme;
actions!(dialog, [DialogCancel]);
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum DialogSize {
Sm,
Md,
Lg,
Xl,
Full,
}
impl DialogSize {
fn width(&self) -> Length {
match self {
Self::Sm => px(400.0).into(),
Self::Md => px(500.0).into(),
Self::Lg => px(600.0).into(),
Self::Xl => px(800.0).into(),
Self::Full => relative(0.95).into(),
}
}
fn max_height(&self) -> Length {
match self {
Self::Full => relative(0.95).into(),
_ => relative(0.85).into(),
}
}
}
pub struct Dialog {
focus_handle: FocusHandle,
header: Option<AnyElement>,
title: Option<SharedString>,
description: Option<SharedString>,
size: DialogSize,
children: Vec<AnyElement>,
footer: Option<AnyElement>,
show_close_button: bool,
close_on_backdrop_click: bool,
close_on_escape: bool,
on_close: Option<Rc<dyn Fn(&mut Window, &mut App)>>,
focused: bool,
dismissing: bool,
dismiss_complete: bool,
style: StyleRefinement,
}
impl Dialog {
pub fn new(cx: &mut Context<Self>) -> Self {
Self {
focus_handle: cx.focus_handle(),
header: None,
title: None,
description: None,
size: DialogSize::Md,
children: vec![],
footer: None,
show_close_button: true,
close_on_backdrop_click: true,
close_on_escape: true,
on_close: None,
focused: false,
dismissing: false,
dismiss_complete: false,
style: StyleRefinement::default(),
}
}
pub fn header(mut self, header: impl IntoElement) -> Self {
self.header = Some(header.into_any_element());
self
}
pub fn title(mut self, title: impl Into<SharedString>) -> Self {
self.title = Some(title.into());
self
}
pub fn description(mut self, description: impl Into<SharedString>) -> Self {
self.description = Some(description.into());
self
}
pub fn size(mut self, size: DialogSize) -> Self {
self.size = size;
self
}
pub fn child(mut self, child: impl IntoElement) -> Self {
self.children.push(child.into_any_element());
self
}
pub fn children<I>(mut self, children: impl IntoIterator<Item = I>) -> Self
where
I: IntoElement,
{
for child in children {
self.children.push(child.into_any_element());
}
self
}
pub fn footer(mut self, footer: impl IntoElement) -> Self {
self.footer = Some(footer.into_any_element());
self
}
pub fn show_close_button(mut self, show: bool) -> Self {
self.show_close_button = show;
self
}
pub fn close_on_backdrop_click(mut self, close: bool) -> Self {
self.close_on_backdrop_click = close;
self
}
pub fn close_on_escape(mut self, close: bool) -> Self {
self.close_on_escape = close;
self
}
pub fn on_close(mut self, handler: impl Fn(&mut Window, &mut App) + 'static) -> Self {
self.on_close = Some(Rc::new(handler));
self
}
fn handle_close(&mut self, window: &mut Window, cx: &mut Context<Self>) {
if self.dismissing {
return;
}
self.dismissing = true;
cx.notify();
cx.spawn_in(window, async move |this, cx| {
smol::Timer::after(Duration::from_millis(200)).await;
let _ = this.update(cx, |dialog, cx| {
dialog.dismiss_complete = true;
cx.notify();
});
})
.detach();
}
}
impl Styled for Dialog {
fn style(&mut self) -> &mut StyleRefinement {
&mut self.style
}
}
impl Render for Dialog {
fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
if self.dismiss_complete {
if let Some(handler) = &self.on_close {
(handler)(window, cx);
}
return div().into_any_element();
}
let theme = use_theme();
let has_slot_header = self.header.is_some();
let has_header = has_slot_header
|| self.title.is_some()
|| self.description.is_some()
|| self.show_close_button;
let dialog_entity = cx.entity().clone();
let user_style = self.style.clone();
let dismissing = self.dismissing;
if !self.focused {
window.focus(&self.focus_handle);
self.focused = true;
}
div()
.id("dialog-overlay")
.absolute()
.inset_0()
.flex()
.items_center()
.justify_center()
.bg(kael::black().opacity(0.5))
.child(
div()
.id("dialog-content")
.occlude()
.key_context("Dialog")
.track_focus(&self.focus_handle)
.when(self.close_on_backdrop_click, |this| {
this.on_mouse_down_out(cx.listener(|this, _, window, cx| {
this.handle_close(window, cx);
}))
})
.on_action(cx.listener(|this, _: &DialogCancel, window, cx| {
if this.close_on_escape {
this.handle_close(window, cx);
}
}))
.w(self.size.width())
.max_h(self.size.max_height())
.flex()
.flex_col()
.bg(theme.tokens.card)
.border_1()
.border_color(theme.tokens.border)
.rounded(theme.tokens.radius_lg)
.shadow_xl()
.overflow_hidden()
.when(has_header, |this| {
if has_slot_header {
let header = self.header.take().unwrap();
this.child(header)
} else {
this.child(
div()
.flex()
.flex_col()
.gap(px(8.0))
.px(px(24.0))
.pt(px(24.0))
.pb(px(16.0))
.when(
self.footer.is_none() && self.children.is_empty(),
|this| this.pb(px(24.0)),
)
.child(
div()
.flex()
.items_start()
.justify_between()
.gap(px(16.0))
.child(
div()
.flex()
.flex_col()
.gap(px(4.0))
.flex_1()
.when_some(self.title.clone(), |this, title| {
this.child(
div()
.text_size(px(18.0))
.font_family(
theme
.tokens
.font_family
.clone(),
)
.font_weight(FontWeight::SEMIBOLD)
.text_color(theme.tokens.foreground)
.line_height(relative(1.2))
.child(title),
)
})
.when_some(
self.description.clone(),
|this, desc| {
this.child(
div()
.text_size(px(14.0))
.font_family(
theme
.tokens
.font_family
.clone(),
)
.text_color(
theme
.tokens
.muted_foreground,
)
.line_height(relative(1.5))
.child(desc),
)
},
),
)
.when(self.show_close_button, |this| {
let dialog_entity = dialog_entity.clone();
this.child(
Button::new("dialog-close-btn", "×")
.variant(ButtonVariant::Ghost)
.size(ButtonSize::Icon)
.on_click(move |_, window, cx| {
cx.update_entity(
&dialog_entity,
|dialog, cx| {
dialog.handle_close(window, cx);
},
);
}),
)
}),
),
)
}
})
.when(!self.children.is_empty(), |this| {
let children = std::mem::take(&mut self.children);
this.child(
div()
.flex()
.flex_col()
.gap(px(16.0))
.px(px(24.0))
.py(px(16.0))
.flex_1()
.children(children),
)
})
.map(|this| {
let mut div = this;
div.style().refine(&user_style);
div
})
.when_some(self.footer.take(), |this, footer| {
this.child(
div()
.flex()
.items_center()
.justify_end()
.gap(px(8.0))
.px(px(24.0))
.py(px(16.0))
.border_t_1()
.border_color(theme.tokens.border)
.child(footer),
)
})
.with_animation(
if dismissing {
"dialog-content-exit"
} else {
"dialog-content-enter"
},
Animation::new(Duration::from_millis(if dismissing { 200 } else { 250 }))
.with_easing(if dismissing {
easings::ease_in_cubic as fn(f32) -> f32
} else {
easings::ease_out_cubic as fn(f32) -> f32
}),
move |el, delta| {
if dismissing {
el.opacity(1.0 - delta).mt(px(8.0 * delta))
} else {
el.opacity(delta).mt(px(12.0 * (1.0 - delta)))
}
},
),
)
.with_animation(
if dismissing {
"dialog-backdrop-exit"
} else {
"dialog-backdrop-fade"
},
Animation::new(Duration::from_millis(200)).with_easing(if dismissing {
easings::ease_in_cubic as fn(f32) -> f32
} else {
easings::ease_out_cubic as fn(f32) -> f32
}),
move |el, delta| {
if dismissing {
el.opacity(1.0 - delta)
} else {
el.opacity(delta)
}
},
)
.into_any_element()
}
}
impl Focusable for Dialog {
fn focus_handle(&self, _: &App) -> FocusHandle {
self.focus_handle.clone()
}
}
impl EventEmitter<()> for Dialog {}
pub fn init_dialog(cx: &mut App) {
cx.bind_keys([KeyBinding::new("escape", DialogCancel, Some("Dialog"))]);
}