add proprety in meta tags

typed-html/src/elements.rs

@@ -78,6 +78,7 @@ declare_elements! {
         content: String,
         http_equiv: HTTPEquiv,
         name: Metadata,
+        property: MetadataProperties,
     } in [MetadataContent];
     style {
         type: Mime,
@@ -459,3 +460,16 @@ fn test_data_attributes() {
 
     assert_eq!("<div data-id=\"1234\">Boo!</div>", frag.to_string());
 }
+#[test]
+fn test_meta_tags() {
+    use crate as axohtml;
+    use crate::{dom::DOMTree, html};
+
+    let frag: DOMTree<String> = html!(<meta property="og:url" content="http://example.com"/>
+    );
+
+    assert_eq!(
+        "<meta content=\"http://example.com\" property=\"og:url\"/>",
+        frag.to_string()
+    );
+}

typed-html/src/types/mod.rs

@@ -254,6 +254,32 @@ pub enum Metadata {
     Viewport,
 }
 
+#[derive(EnumString, Display, PartialEq, Eq, PartialOrd, Ord, AsRefStr, IntoStaticStr)]
+pub enum MetadataProperties {
+    #[strum(to_string = "og:title")]
+    Title,
+    #[strum(to_string = "og:type")]
+    Type,
+    #[strum(to_string = "og:image")]
+    Image,
+    #[strum(to_string = "og:url")]
+    Homepage,
+    #[strum(to_string = "og:audio")]
+    Audio,
+    #[strum(to_string = "og:description")]
+    Description,
+    #[strum(to_string = "og:determiner")]
+    Determiner,
+    #[strum(to_string = "og:locale")]
+    Locale,
+    #[strum(to_string = "og:site_name")]
+    ParentSiteName,
+    #[strum(to_string = "og:video")]
+    Video,
+    #[strum(to_string = "og:locale:alternate")]
+    ExtraLocales,
+}
+
 #[derive(EnumString, Display, PartialEq, Eq, PartialOrd, Ord, AsRefStr, IntoStaticStr)]
 pub enum OnOff {
     #[strum(to_string = "on")]