Bug 1343753 - Add Servo_Property_IsAnimatable.

MozReview-Commit-ID: 343Md43bpij

components/style/gecko_bindings/bindings.rs

@@ -1686,6 +1686,9 @@ extern "C" {
                                                           nsCSSPropertyID)
      -> RawServoAnimationValueStrong;
 }
+extern "C" {
+    pub fn Servo_Property_IsAnimatable(property: nsCSSPropertyID) -> bool;
+}
 extern "C" {
     pub fn Servo_Property_IsDiscreteAnimatable(property: nsCSSPropertyID)
      -> bool;

components/style/properties/helpers/animated_properties.mako.rs

@@ -118,6 +118,19 @@ impl TransitionProperty {
     }
 }
 
+/// Returns true if this nsCSSPropertyID is one of the animatable properties.
+#[cfg(feature = "gecko")]
+pub fn nscsspropertyid_is_animatable(property: nsCSSPropertyID) -> bool {
+    match property {
+        % for prop in data.longhands:
+            % if prop.animatable:
+                ${helpers.to_nscsspropertyid(prop.ident)} => true,
+            % endif
+        % endfor
+        _ => false
+    }
+}
+
 impl ToCss for TransitionProperty {
     fn to_css<W>(&self, dest: &mut W) -> fmt::Result
         where W: fmt::Write,

ports/geckolib/glue.rs

@@ -461,6 +461,12 @@ pub extern "C" fn Servo_ComputedValues_ExtractAnimationValue(computed_values: Se
     Arc::new(AnimationValue::from_computed_values(&property_id.into(), computed_values)).into_strong()
 }
 
+#[no_mangle]
+pub extern "C" fn Servo_Property_IsAnimatable(property: nsCSSPropertyID) -> bool {
+    use style::properties::animated_properties;
+    animated_properties::nscsspropertyid_is_animatable(property)
+}
+
 #[no_mangle]
 pub extern "C" fn Servo_Property_IsDiscreteAnimatable(property: nsCSSPropertyID) -> bool {
     let property: TransitionProperty = property.into();