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use std::{rc::Rc, time::Duration};
use gpui::{
anchored, div, point, prelude::FluentBuilder as _, px, Animation, AnimationExt as _,
AnyElement, App, Axis, ClickEvent, DefiniteLength, DismissEvent, Div, EventEmitter,
FocusHandle, InteractiveElement as _, IntoElement, KeyBinding, MouseButton, ParentElement,
Pixels, RenderOnce, Styled, Window,
};
use crate::{
actions::Cancel,
button::{Button, ButtonVariants as _},
h_flex,
modal::overlay_color,
root::ContextModal as _,
title_bar::TITLE_BAR_HEIGHT,
v_flex, ActiveTheme, IconName, Placement, Sizable, StyledExt as _,
};
const CONTEXT: &str = "Drawer";
pub(crate) fn init(cx: &mut App) {
cx.bind_keys([KeyBinding::new("escape", Cancel, Some(CONTEXT))])
}
#[derive(IntoElement)]
pub struct Drawer {
pub(crate) focus_handle: FocusHandle,
pub(crate) placement: Placement,
pub(crate) size: DefiniteLength,
resizable: bool,
on_close: Rc<dyn Fn(&ClickEvent, &mut Window, &mut App) + 'static>,
title: Option<AnyElement>,
footer: Option<AnyElement>,
content: Div,
margin_top: Pixels,
overlay: bool,
overlay_closable: bool,
}
impl Drawer {
pub fn new(_: &mut Window, cx: &mut App) -> Self {
Self {
focus_handle: cx.focus_handle(),
placement: Placement::Right,
size: DefiniteLength::Absolute(px(350.).into()),
resizable: true,
title: None,
footer: None,
content: v_flex().px_4().py_3(),
margin_top: TITLE_BAR_HEIGHT,
overlay: true,
overlay_closable: true,
on_close: Rc::new(|_, _, _| {}),
}
}
/// Sets the title of the drawer.
pub fn title(mut self, title: impl IntoElement) -> Self {
self.title = Some(title.into_any_element());
self
}
/// Set the footer of the drawer.
pub fn footer(mut self, footer: impl IntoElement) -> Self {
self.footer = Some(footer.into_any_element());
self
}
/// Sets the size of the drawer, default is 350px.
pub fn size(mut self, size: impl Into<DefiniteLength>) -> Self {
self.size = size.into();
self
}
/// Sets the margin top of the drawer, default is 0px.
///
/// This is used to let Drawer be placed below a Windows Title, you can give the height of the title bar.
pub fn margin_top(mut self, top: Pixels) -> Self {
self.margin_top = top;
self
}
/// Sets whether the drawer is resizable, default is `true`.
pub fn resizable(mut self, resizable: bool) -> Self {
self.resizable = resizable;
self
}
/// Set whether the drawer should have an overlay, default is `true`.
pub fn overlay(mut self, overlay: bool) -> Self {
self.overlay = overlay;
self
}
/// Set whether the drawer should be closable by clicking the overlay, default is `true`.
pub fn overlay_closable(mut self, overlay_closable: bool) -> Self {
self.overlay_closable = overlay_closable;
self
}
/// Listen to the close event of the drawer.
pub fn on_close(
mut self,
on_close: impl Fn(&ClickEvent, &mut Window, &mut App) + 'static,
) -> Self {
self.on_close = Rc::new(on_close);
self
}
}
impl EventEmitter<DismissEvent> for Drawer {}
impl ParentElement for Drawer {
fn extend(&mut self, elements: impl IntoIterator<Item = AnyElement>) {
self.content.extend(elements);
}
}
impl Styled for Drawer {
fn style(&mut self) -> &mut gpui::StyleRefinement {
self.content.style()
}
}
impl RenderOnce for Drawer {
fn render(self, window: &mut Window, cx: &mut App) -> impl IntoElement {
let placement = self.placement;
let titlebar_height = self.margin_top;
let window_paddings = crate::window_border::window_paddings(window);
let size = window.viewport_size()
- gpui::size(
window_paddings.left + window_paddings.right,
window_paddings.top + window_paddings.bottom,
);
let on_close = self.on_close.clone();
anchored()
.position(point(
window_paddings.left,
window_paddings.top + titlebar_height,
))
.snap_to_window()
.child(
div()
.occlude()
.w(size.width)
.h(size.height - titlebar_height)
.bg(overlay_color(self.overlay, cx))
.when(self.overlay_closable, |this| {
this.on_mouse_down(MouseButton::Left, {
let on_close = self.on_close.clone();
move |_, window, cx| {
on_close(&ClickEvent::default(), window, cx);
window.close_drawer(cx);
}
})
})
.child(
v_flex()
.id("drawer")
.tab_group()
.key_context(CONTEXT)
.track_focus(&self.focus_handle)
.on_action({
let on_close = self.on_close.clone();
move |_: &Cancel, window, cx| {
cx.propagate();
on_close(&ClickEvent::default(), window, cx);
window.close_drawer(cx);
}
})
.absolute()
.occlude()
.bg(cx.theme().background)
.border_color(cx.theme().border)
.shadow_xl()
.map(|this| {
// Set the size of the drawer.
if placement.is_horizontal() {
this.h_full().w(self.size)
} else {
this.w_full().h(self.size)
}
})
.map(|this| match self.placement {
Placement::Top => this.top_0().left_0().right_0().border_b_1(),
Placement::Right => this.top_0().right_0().bottom_0().border_l_1(),
Placement::Bottom => {
this.bottom_0().left_0().right_0().border_t_1()
}
Placement::Left => this.top_0().left_0().bottom_0().border_r_1(),
})
.child(
// TitleBar
h_flex()
.justify_between()
.pl_4()
.pr_3()
.py_2()
.w_full()
.font_semibold()
.child(self.title.unwrap_or(div().into_any_element()))
.child(
Button::new("close")
.small()
.ghost()
.icon(IconName::Close)
.on_click(move |_, window, cx| {
on_close(&ClickEvent::default(), window, cx);
window.close_drawer(cx);
}),
),
)
.child(
// Body
div()
.flex_1()
.overflow_hidden()
.child(v_flex().scrollable(Axis::Vertical).child(self.content)),
)
.when_some(self.footer, |this, footer| {
// Footer
this.child(
h_flex()
.justify_between()
.px_4()
.py_3()
.w_full()
.child(footer),
)
})
.with_animation(
"slide",
Animation::new(Duration::from_secs_f64(0.15)),
move |this, delta| {
let y = px(-100.) + delta * px(100.);
this.map(|this| match placement {
Placement::Top => this.top(y),
Placement::Right => this.right(y),
Placement::Bottom => this.bottom(y),
Placement::Left => this.left(y),
})
},
),
),
)
}
}