1 files changed, 71 insertions, 0 deletions
diff --git a/servo/components/style/values/specified/outline.rs b/servo/components/style/values/specified/outline.rs
new file mode 100644
index 0000000000..6e5382d4c2
--- /dev/null
+++ b/servo/components/style/values/specified/outline.rs
@@ -0,0 +1,71 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+//! Specified values for outline properties
+
+use crate::parser::{Parse, ParserContext};
+use crate::values::specified::BorderStyle;
+use cssparser::Parser;
+use selectors::parser::SelectorParseErrorKind;
+use style_traits::ParseError;
+
+#[derive(
+    Clone,
+    Copy,
+    Debug,
+    Eq,
+    MallocSizeOf,
+    Ord,
+    PartialEq,
+    PartialOrd,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToResolvedValue,
+    ToShmem,
+)]
+#[repr(C, u8)]
+/// <https://drafts.csswg.org/css-ui/#propdef-outline-style>
+pub enum OutlineStyle {
+    /// auto
+    Auto,
+    /// <border-style>
+    BorderStyle(BorderStyle),
+}
+
+impl OutlineStyle {
+    #[inline]
+    /// Get default value as None
+    pub fn none() -> OutlineStyle {
+        OutlineStyle::BorderStyle(BorderStyle::None)
+    }
+
+    #[inline]
+    /// Get value for None or Hidden
+    pub fn none_or_hidden(&self) -> bool {
+        match *self {
+            OutlineStyle::Auto => false,
+            OutlineStyle::BorderStyle(ref style) => style.none_or_hidden(),
+        }
+    }
+}
+
+impl Parse for OutlineStyle {
+    fn parse<'i, 't>(
+        _context: &ParserContext,
+        input: &mut Parser<'i, 't>,
+    ) -> Result<OutlineStyle, ParseError<'i>> {
+        if let Ok(border_style) = input.try_parse(BorderStyle::parse) {
+            if let BorderStyle::Hidden = border_style {
+                return Err(input
+                    .new_custom_error(SelectorParseErrorKind::UnexpectedIdent("hidden".into())));
+            }
+
+            return Ok(OutlineStyle::BorderStyle(border_style));
+        }
+
+        input.expect_ident_matching("auto")?;
+        Ok(OutlineStyle::Auto)
+    }
+}