Use helpers.predefined_type for transform property.

components/style/values/computed/mod.rs

@@ -57,7 +57,7 @@ pub use self::svg::{SVGLength, SVGOpacity, SVGPaint, SVGPaintKind, SVGStrokeDash
 pub use self::table::XSpan;
 pub use self::text::{InitialLetter, LetterSpacing, LineHeight, TextOverflow, WordSpacing};
 pub use self::time::Time;
-pub use self::transform::{TimingFunction, TransformOrigin};
+pub use self::transform::{TimingFunction, Transform, TransformOperation, TransformOrigin};
 
 #[cfg(feature = "gecko")]
 pub mod align;

components/style/values/generics/transform.rs

@@ -450,3 +450,10 @@ impl<T: ToCss> ToCss for Transform<T> {
         Ok(())
     }
 }
+
+impl<T> Transform<T> {
+    /// `none`
+    pub fn none() -> Self {
+        Transform(vec![])
+    }
+}

components/style/values/specified/mod.rs

@@ -53,7 +53,7 @@ pub use self::svg::{SVGLength, SVGOpacity, SVGPaint, SVGPaintKind, SVGStrokeDash
 pub use self::table::XSpan;
 pub use self::text::{InitialLetter, LetterSpacing, LineHeight, TextOverflow, WordSpacing};
 pub use self::time::Time;
-pub use self::transform::{TimingFunction, TransformOrigin};
+pub use self::transform::{TimingFunction, Transform, TransformOrigin};
 pub use super::generics::grid::GridTemplateComponent as GenericGridTemplateComponent;
 
 #[cfg(feature = "gecko")]

components/style/values/specified/transform.rs

@@ -39,7 +39,7 @@ pub type TransformOrigin = GenericTransformOrigin<OriginComponent<X>, OriginComp
 impl Transform {
     /// Internal parse function for deciding if we wish to accept prefixed values or not
     // Allow unitless zero angle for rotate() and skew() to align with gecko
-    pub fn parse_internal<'i, 't>(
+    fn parse_internal<'i, 't>(
         context: &ParserContext,
         input: &mut Parser<'i, 't>,
         prefixed: bool,
@@ -252,6 +252,25 @@ impl Transform {
             })
         })?))
     }
+
+    /// Parses `-moz-transform` property. This prefixed property also accepts LengthOrPercentage
+    /// in the nondiagonal homogeneous components of matrix and matrix3d.
+    #[inline]
+    pub fn parse_prefixed<'i, 't>(
+        context: &ParserContext,
+        input: &mut Parser<'i, 't>,
+    ) -> Result<Self, ParseError<'i>> {
+        Transform::parse_internal(context, input, true)
+    }
+}
+
+impl Parse for Transform {
+    fn parse<'i, 't>(
+        context: &ParserContext,
+        input: &mut Parser<'i, 't>
+    ) -> Result<Self, ParseError<'i>> {
+        Transform::parse_internal(context, input, false)
+    }
 }
 
 /// The specified value of a component of a CSS `<transform-origin>`.