81 lines
2.2 KiB
Rust
81 lines
2.2 KiB
Rust
use super::TextNode;
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use crate::library::prelude::*;
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use crate::util::EcoString;
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/// Link text and other elements to an URL.
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#[derive(Debug, Hash)]
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pub struct LinkNode {
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/// The url the link points to.
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pub url: EcoString,
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/// How the link is represented.
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pub body: Option<Content>,
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}
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#[node(showable)]
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impl LinkNode {
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/// The fill color of text in the link. Just the surrounding text color
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/// if `auto`.
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pub const FILL: Smart<Paint> = Smart::Auto;
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/// Whether to underline link.
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pub const UNDERLINE: bool = true;
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fn construct(_: &mut Machine, args: &mut Args) -> TypResult<Content> {
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Ok(Content::show(Self {
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url: args.expect::<EcoString>("url")?,
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body: args.eat()?,
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}))
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}
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}
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impl Show for LinkNode {
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fn unguard(&self, sel: Selector) -> ShowNode {
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Self {
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url: self.url.clone(),
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body: self.body.as_ref().map(|body| body.unguard(sel)),
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}
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.pack()
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}
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fn encode(&self, _: StyleChain) -> Dict {
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dict! {
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"url" => Value::Str(self.url.clone()),
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"body" => match &self.body {
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Some(body) => Value::Content(body.clone()),
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None => Value::None,
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},
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}
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}
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fn realize(&self, _: &mut Context, _: StyleChain) -> TypResult<Content> {
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Ok(self.body.clone().unwrap_or_else(|| {
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let url = &self.url;
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let mut text = url.as_str();
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for prefix in ["mailto:", "tel:"] {
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text = text.trim_start_matches(prefix);
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}
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let shorter = text.len() < url.len();
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Content::Text(if shorter { text.into() } else { url.clone() })
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}))
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}
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fn finalize(
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&self,
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_: &mut Context,
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styles: StyleChain,
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mut realized: Content,
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) -> TypResult<Content> {
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let mut map = StyleMap::new();
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map.set(TextNode::LINK, Some(self.url.clone()));
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if let Smart::Custom(fill) = styles.get(Self::FILL) {
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map.set(TextNode::FILL, fill);
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}
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if styles.get(Self::UNDERLINE) {
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realized = realized.underlined();
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}
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Ok(realized.styled_with_map(map))
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}
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}
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