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Merge pull request #3022 from pml68/feat/markdown-tasklists

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Tasklist support for markdown widget (disabled checkboxes)
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Héctor 2025-11-29 13:42:46 +01:00 • committed by GitHub
commit 70a9285796
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GPG key ID: B5690EEEBB952194
1 changed files with 89 additions and 25 deletions
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114
widget/src/markdown.rs
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@ -51,7 +51,9 @@ use crate::core::theme;
use crate::core::{
self, Color, Element, Length, Padding, Pixels, Theme, color,
};
use crate::{column, container, rich_text, row, rule, scrollable, span, text};
use crate::{
checkbox, column, container, rich_text, row, rule, scrollable, span, text,
};
use std::borrow::BorrowMut;
use std::cell::{Cell, RefCell};
@ -208,7 +210,7 @@ pub enum Item {
/// The first number of the list, if it is ordered.
start: Option<u64>,
/// The items of the list.
items: Vec<Vec<Item>>,
bullets: Vec<Bullet>,
},
/// An image.
Image {
@ -350,6 +352,37 @@ impl Span {
}
}
/// The item of a list.
#[derive(Debug, Clone)]
pub enum Bullet {
/// A simple bullet point.
Point {
/// The contents of the bullet point.
items: Vec<Item>,
},
/// A task.
Task {
/// The contents of the task.
items: Vec<Item>,
/// Whether the task is done or not.
done: bool,
},
}
impl Bullet {
fn items(&self) -> &[Item] {
match self {
Bullet::Point { items } | Bullet::Task { items, .. } => items,
}
}
fn push(&mut self, item: Item) {
let (Bullet::Point { items } | Bullet::Task { items, .. }) = self;
items.push(item);
}
}
/// Parse the given Markdown content.
///
/// # Example
@ -503,7 +536,7 @@ fn parse_with<'a>(
struct List {
start: Option<u64>,
items: Vec<Vec<Item>>,
bullets: Vec<Bullet>,
}
let broken_links = Rc::new(RefCell::new(HashSet::new()));
@ -529,7 +562,8 @@ fn parse_with<'a>(
pulldown_cmark::Options::ENABLE_YAML_STYLE_METADATA_BLOCKS
| pulldown_cmark::Options::ENABLE_PLUSES_DELIMITED_METADATA_BLOCKS
| pulldown_cmark::Options::ENABLE_TABLES
| pulldown_cmark::Options::ENABLE_STRIKETHROUGH,
| pulldown_cmark::Options::ENABLE_STRIKETHROUGH
| pulldown_cmark::Options::ENABLE_TASKLISTS,
{
let references = state.borrow().references.clone();
let broken_links = broken_links.clone();
@ -566,7 +600,7 @@ fn parse_with<'a>(
if let Some(scope) = stack.last_mut() {
match scope {
Scope::List(list) => {
list.items.last_mut().expect("item context").push(item);
list.bullets.last_mut().expect("item context").push(item);
}
Scope::Quote(items) => {
items.push(item);
@ -630,14 +664,14 @@ fn parse_with<'a>(
stack.push(Scope::List(List {
start: first_item,
items: Vec::new(),
bullets: Vec::new(),
}));
prev
}
pulldown_cmark::Tag::Item => {
if let Some(Scope::List(list)) = stack.last_mut() {
list.items.push(Vec::new());
list.bullets.push(Bullet::Point { items: Vec::new() });
}
None
@ -781,7 +815,7 @@ fn parse_with<'a>(
&mut stack,
Item::List {
start: list.start,
items: list.items,
bullets: list.bullets,
},
source,
)
@ -970,6 +1004,19 @@ fn parse_with<'a>(
pulldown_cmark::Event::Rule => {
produce(state.borrow_mut(), &mut stack, Item::Rule, source)
}
pulldown_cmark::Event::TaskListMarker(done) => {
if let Some(Scope::List(list)) = stack.last_mut()
&& let Some(item) = list.bullets.last_mut()
&& let Bullet::Point { items } = item
{
*item = Bullet::Task {
items: std::mem::take(items),
done,
};
}
None
}
_ => None,
})
}
@ -1201,13 +1248,14 @@ where
code,
lines,
} => viewer.code_block(settings, language.as_deref(), code, lines),
Item::List { start: None, items } => {
viewer.unordered_list(settings, items)
}
Item::List {
start: None,
bullets,
} => viewer.unordered_list(settings, bullets),
Item::List {
start: Some(start),
items,
} => viewer.ordered_list(settings, *start, items),
bullets,
} => viewer.ordered_list(settings, *start, bullets),
Item::Quote(quote) => viewer.quote(settings, quote),
Item::Rule => viewer.rule(settings),
Item::Table { columns, rows } => viewer.table(settings, columns, rows),
@ -1280,18 +1328,31 @@ where
pub fn unordered_list<'a, Message, Theme, Renderer>(
viewer: &impl Viewer<'a, Message, Theme, Renderer>,
settings: Settings,
items: &'a [Vec<Item>],
bullets: &'a [Bullet],
) -> Element<'a, Message, Theme, Renderer>
where
Message: 'a,
Theme: Catalog + 'a,
Renderer: core::text::Renderer<Font = Font> + 'a,
{
column(items.iter().map(|items| {
column(bullets.iter().map(|bullet| {
row![
text("•").size(settings.text_size),
match bullet {
Bullet::Point { .. } => {
text("•").size(settings.text_size).into()
}
Bullet::Task { done, .. } => {
Element::from(
container(checkbox(*done).size(settings.text_size))
.center_y(
text::LineHeight::default()
.to_absolute(settings.text_size),
),
)
}
},
view_with(
items,
bullet.items(),
Settings {
spacing: settings.spacing * 0.6,
..settings
@ -1313,23 +1374,25 @@ pub fn ordered_list<'a, Message, Theme, Renderer>(
viewer: &impl Viewer<'a, Message, Theme, Renderer>,
settings: Settings,
start: u64,
items: &'a [Vec<Item>],
bullets: &'a [Bullet],
) -> Element<'a, Message, Theme, Renderer>
where
Message: 'a,
Theme: Catalog + 'a,
Renderer: core::text::Renderer<Font = Font> + 'a,
{
let digits = ((start + items.len() as u64).max(1) as f32).log10().ceil();
let digits = ((start + bullets.len() as u64).max(1) as f32)
.log10()
.ceil();
column(items.iter().enumerate().map(|(i, items)| {
column(bullets.iter().enumerate().map(|(i, bullet)| {
row![
text!("{}.", i as u64 + start)
.size(settings.text_size)
.align_x(alignment::Horizontal::Right)
.width(settings.text_size * ((digits / 2.0).ceil() + 1.0)),
view_with(
items,
bullet.items(),
Settings {
spacing: settings.spacing * 0.6,
..settings
@ -1568,9 +1631,9 @@ where
fn unordered_list(
&self,
settings: Settings,
items: &'a [Vec<Item>],
bullets: &'a [Bullet],
) -> Element<'a, Message, Theme, Renderer> {
unordered_list(self, settings, items)
unordered_list(self, settings, bullets)
}
/// Displays an ordered list.
@ -1580,9 +1643,9 @@ where
&self,
settings: Settings,
start: u64,
items: &'a [Vec<Item>],
bullets: &'a [Bullet],
) -> Element<'a, Message, Theme, Renderer> {
ordered_list(self, settings, start, items)
ordered_list(self, settings, start, bullets)
}
/// Displays a quote.
@ -1638,6 +1701,7 @@ pub trait Catalog:
+ scrollable::Catalog
+ text::Catalog
+ crate::rule::Catalog
+ checkbox::Catalog
+ crate::table::Catalog
{
/// The styling class of a Markdown code block.