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use crate::{bumpalo, css, Align, Bus, Column, Css, Element, Length, Widget};
pub use iced_style::scrollable::{Scrollbar, Scroller, StyleSheet};
#[allow(missing_debug_implementations)]
pub struct Scrollable<'a, Message> {
width: Length,
height: Length,
max_height: u32,
content: Column<'a, Message>,
#[allow(dead_code)]
style: Box<dyn StyleSheet>,
}
impl<'a, Message> Scrollable<'a, Message> {
pub fn new(_state: &'a mut State) -> Self {
use std::u32;
Scrollable {
width: Length::Fill,
height: Length::Shrink,
max_height: u32::MAX,
content: Column::new(),
style: Default::default(),
}
}
pub fn spacing(mut self, units: u16) -> Self {
self.content = self.content.spacing(units);
self
}
pub fn padding(mut self, units: u16) -> Self {
self.content = self.content.padding(units);
self
}
pub fn width(mut self, width: Length) -> Self {
self.width = width;
self
}
pub fn height(mut self, height: Length) -> Self {
self.height = height;
self
}
pub fn max_width(mut self, max_width: u32) -> Self {
self.content = self.content.max_width(max_width);
self
}
pub fn max_height(mut self, max_height: u32) -> Self {
self.max_height = max_height;
self
}
pub fn align_items(mut self, align_items: Align) -> Self {
self.content = self.content.align_items(align_items);
self
}
pub fn style(mut self, style: impl Into<Box<dyn StyleSheet>>) -> Self {
self.style = style.into();
self
}
pub fn push<E>(mut self, child: E) -> Self
where
E: Into<Element<'a, Message>>,
{
self.content = self.content.push(child);
self
}
}
impl<'a, Message> Widget<Message> for Scrollable<'a, Message>
where
Message: 'static,
{
fn node<'b>(
&self,
bump: &'b bumpalo::Bump,
bus: &Bus<Message>,
style_sheet: &mut Css<'b>,
) -> dodrio::Node<'b> {
use dodrio::builder::*;
let width = css::length(self.width);
let height = css::length(self.height);
let node = div(bump)
.attr(
"style",
bumpalo::format!(
in bump,
"width: {}; height: {}; max-height: {}px; overflow: auto",
width,
height,
self.max_height
)
.into_bump_str(),
)
.children(vec![self.content.node(bump, bus, style_sheet)]);
node.finish()
}
}
impl<'a, Message> From<Scrollable<'a, Message>> for Element<'a, Message>
where
Message: 'static,
{
fn from(scrollable: Scrollable<'a, Message>) -> Element<'a, Message> {
Element::new(scrollable)
}
}
#[derive(Debug, Clone, Copy, Default)]
pub struct State;
impl State {
pub fn new() -> Self {
State::default()
}
}