Auto merge of #14446 - heycam:should-traverse, r=bholley

stylo: Add FFI function to check if a node is dirty.

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This is the Servo-side change from https://bugzilla.mozilla.org/show_bug.cgi?id=1321284, which has already been reviewed by bholley.

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- [ ] These changes fix #__ (github issue number if applicable).

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This commit is contained in:
bors-servo 2016-12-02 22:58:49 -08:00 committed by GitHub
commit c974b61d7f

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@ -202,6 +202,23 @@ pub extern "C" fn Servo_Element_ClearData(element: RawGeckoElementBorrowed) -> (
GeckoElement(element).clear_data();
}
#[no_mangle]
pub extern "C" fn Servo_Element_ShouldTraverse(element: RawGeckoElementBorrowed) -> bool {
let element = GeckoElement(element);
if let Some(data) = element.get_data() {
debug_assert!(!element.has_dirty_descendants(),
"only call Servo_Element_ShouldTraverse if you know the element \
does not have dirty descendants");
match *data.borrow() {
ElementData::Initial(None) |
ElementData::Restyle(..) => true,
_ => false,
}
} else {
false
}
}
#[no_mangle]
pub extern "C" fn Servo_StyleSheet_Empty(mode: SheetParsingMode) -> RawServoStyleSheetStrong {
let url = ServoUrl::parse("about:blank").unwrap();