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use crate::{css, Align, Bus, Css, Element, Length, Widget};
use dodrio::bumpalo;
use std::u32;
#[allow(missing_debug_implementations)]
pub struct Column<'a, Message> {
spacing: u16,
padding: u16,
width: Length,
height: Length,
max_width: u32,
max_height: u32,
align_items: Align,
children: Vec<Element<'a, Message>>,
}
impl<'a, Message> Column<'a, Message> {
pub fn new() -> Self {
Self::with_children(Vec::new())
}
pub fn with_children(children: Vec<Element<'a, Message>>) -> Self {
Column {
spacing: 0,
padding: 0,
width: Length::Fill,
height: Length::Shrink,
max_width: u32::MAX,
max_height: u32::MAX,
align_items: Align::Start,
children,
}
}
pub fn spacing(mut self, units: u16) -> Self {
self.spacing = units;
self
}
pub fn padding(mut self, units: u16) -> Self {
self.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.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: Align) -> Self {
self.align_items = align;
self
}
pub fn push<E>(mut self, child: E) -> Self
where
E: Into<Element<'a, Message>>,
{
self.children.push(child.into());
self
}
}
impl<'a, Message> Widget<Message> for Column<'a, Message> {
fn node<'b>(
&self,
bump: &'b bumpalo::Bump,
publish: &Bus<Message>,
style_sheet: &mut Css<'b>,
) -> dodrio::Node<'b> {
use dodrio::builder::*;
let children: Vec<_> = self
.children
.iter()
.map(|element| element.widget.node(bump, publish, style_sheet))
.collect();
let column_class = style_sheet.insert(bump, css::Rule::Column);
let spacing_class =
style_sheet.insert(bump, css::Rule::Spacing(self.spacing));
let padding_class =
style_sheet.insert(bump, css::Rule::Padding(self.padding));
div(bump)
.attr(
"class",
bumpalo::format!(in bump, "{} {} {}", column_class, spacing_class, padding_class)
.into_bump_str(),
)
.attr("style", bumpalo::format!(
in bump,
"width: {}; height: {}; max-width: {}; max-height: {}; align-items: {}",
css::length(self.width),
css::length(self.height),
css::max_length(self.max_width),
css::max_length(self.max_height),
css::align(self.align_items)
).into_bump_str()
)
.children(children)
.finish()
}
}
impl<'a, Message> From<Column<'a, Message>> for Element<'a, Message>
where
Message: 'static,
{
fn from(column: Column<'a, Message>) -> Element<'a, Message> {
Element::new(column)
}
}