Add Servo_GetProperties_Overriding_Animation.

We add one FFI, Servo_GetProperties_Overriding_Animation, which calls
StrongRuleNode::get_properties_overriding_animations() to get a LonghandIdSet,
which may override animation properties running on compositor.

1 files changed, 35 insertions, 1 deletions

diff --git a/ports/geckolib/glue.rs b/ports/geckolib/glue.rs
index 58075cbd063..0cd95543ac1 100644
--- a/ports/geckolib/glue.rs
+++ b/ports/geckolib/glue.rs
@@ -40,11 +40,13 @@ use style::gecko_bindings::bindings::{RawServoStyleSheetBorrowed, ServoComputedV
 use style::gecko_bindings::bindings::{RawServoStyleSheetStrong, ServoComputedValuesStrong};
 use style::gecko_bindings::bindings::{RawServoSupportsRule, RawServoSupportsRuleBorrowed};
 use style::gecko_bindings::bindings::{ServoCssRulesBorrowed, ServoCssRulesStrong};
-use style::gecko_bindings::bindings::{nsACString, nsAString};
+use style::gecko_bindings::bindings::{nsACString, nsAString, nsCSSPropertyIDSetBorrowedMut};
+use style::gecko_bindings::bindings::Gecko_AddPropertyToSet;
 use style::gecko_bindings::bindings::Gecko_GetOrCreateFinalKeyframe;
 use style::gecko_bindings::bindings::Gecko_GetOrCreateInitialKeyframe;
 use style::gecko_bindings::bindings::Gecko_GetOrCreateKeyframeAtStart;
 use style::gecko_bindings::bindings::RawGeckoAnimationPropertySegmentBorrowed;
+use style::gecko_bindings::bindings::RawGeckoCSSPropertyIDListBorrowed;
 use style::gecko_bindings::bindings::RawGeckoComputedKeyframeValuesListBorrowedMut;
 use style::gecko_bindings::bindings::RawGeckoComputedTimingBorrowed;
 use style::gecko_bindings::bindings::RawGeckoElementBorrowed;
@@ -1320,6 +1322,38 @@ pub extern "C" fn Servo_ParseEasing(easing: *const nsAString,
 }
 
 #[no_mangle]
+pub extern "C" fn Servo_GetProperties_Overriding_Animation(element: RawGeckoElementBorrowed,
+                                                           list: RawGeckoCSSPropertyIDListBorrowed,
+                                                           set: nsCSSPropertyIDSetBorrowedMut) {
+    let element = GeckoElement(element);
+    let element_data = match element.borrow_data() {
+        Some(data) => data,
+        None => return
+    };
+    let global_style_data = &*GLOBAL_STYLE_DATA;
+    let guard = global_style_data.shared_lock.read();
+    let guards = StylesheetGuards::same(&guard);
+    let (overridden, custom) =
+        element_data.styles().primary.rules.get_properties_overriding_animations(&guards);
+    for p in list.iter() {
+        match PropertyId::from_nscsspropertyid(*p) {
+            Ok(property) => {
+                if let PropertyId::Longhand(id) = property {
+                    if overridden.contains(id) {
+                        unsafe { Gecko_AddPropertyToSet(set, *p) };
+                    }
+                }
+            },
+            Err(_) => {
+                if *p == nsCSSPropertyID::eCSSPropertyExtra_variable && custom {
+                    unsafe { Gecko_AddPropertyToSet(set, *p) };
+                }
+            }
+        }
+    }
+}
+
+#[no_mangle]
 pub extern "C" fn Servo_ParseStyleAttribute(data: *const nsACString,
                                             raw_extra_data: *mut URLExtraData,
                                             quirks_mode: nsCompatibility)