html_sys/metadata/
meta.rs

1/// The HTML `<meta>` element
2///
3/// [MDN Documentation](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/meta)
4#[doc(alias = "meta")]
5#[non_exhaustive]
6#[derive(Debug, Clone, PartialEq, Default)]
7pub struct Meta {
8    pub data_map: crate::DataMap,
9    global_attrs: crate::GlobalAttributes,
10    /// Metadata name
11    pub name: std::option::Option<std::borrow::Cow<'static, str>>,
12    /// Pragma directive
13    pub http_equiv: std::option::Option<std::borrow::Cow<'static, str>>,
14    /// Value of the element
15    pub content: std::option::Option<std::borrow::Cow<'static, str>>,
16    /// Character encoding declaration
17    pub charset: std::option::Option<std::borrow::Cow<'static, str>>,
18    /// Applicable media
19    pub media: std::option::Option<std::borrow::Cow<'static, str>>,
20}
21impl crate::RenderElement for Meta {
22    fn write_opening_tag<W: std::fmt::Write>(&self, writer: &mut W) -> std::fmt::Result {
23        write!(writer, "<meta")?;
24        if let Some(field) = self.name.as_ref() {
25            write!(writer, r#" name="{field}""#)?;
26        }
27        if let Some(field) = self.http_equiv.as_ref() {
28            write!(writer, r#" http-equiv="{field}""#)?;
29        }
30        if let Some(field) = self.content.as_ref() {
31            write!(writer, r#" content="{field}""#)?;
32        }
33        if let Some(field) = self.charset.as_ref() {
34            write!(writer, r#" charset="{field}""#)?;
35        }
36        if let Some(field) = self.media.as_ref() {
37            write!(writer, r#" media="{field}""#)?;
38        }
39        write!(writer, "{}", self.global_attrs)?;
40        write!(writer, "{}", self.data_map)?;
41        write!(writer, ">")?;
42        Ok(())
43    }
44    #[allow(unused_variables)]
45    fn write_closing_tag<W: std::fmt::Write>(&self, writer: &mut W) -> std::fmt::Result {
46        Ok(())
47    }
48}
49impl std::fmt::Display for Meta {
50    fn fmt(&self, writer: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
51        use crate::RenderElement;
52        self.write_opening_tag(writer)?;
53        self.write_closing_tag(writer)?;
54        Ok(())
55    }
56}
57impl std::ops::Deref for Meta {
58    type Target = crate::GlobalAttributes;
59    fn deref(&self) -> &Self::Target {
60        &self.global_attrs
61    }
62}
63impl std::ops::DerefMut for Meta {
64    fn deref_mut(&mut self) -> &mut Self::Target {
65        &mut self.global_attrs
66    }
67}