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style: Add FFI function for parsing IntersectionObserver rootMargin values.

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This commit is contained in:
Cameron McCormack 2017-10-16 18:01:42 +08:00
parent eecee32a0b
commit ef28ccb1a3
3 changed files with 120 additions and 5 deletions
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40
ports/geckolib/glue.rs
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@ -112,7 +112,7 @@ use style::gecko_bindings::sugar::refptr::RefPtr;
use style::gecko_properties::style_structs;
use style::invalidation::element::restyle_hints;
use style::media_queries::{Device, MediaList, parse_media_query_list};
use style::parser::{ParserContext, self};
use style::parser::{Parse, ParserContext, self};
use style::properties::{CascadeFlags, ComputedValues, DeclarationSource, Importance};
use style::properties::{IS_FIELDSET_CONTENT, IS_LINK, IS_VISITED_LINK, LonghandIdSet};
use style::properties::{LonghandId, PropertyDeclaration, PropertyDeclarationBlock, PropertyId};
@ -146,6 +146,7 @@ use style::values::animated::{Animate, Procedure, ToAnimatedZero};
use style::values::computed::{Context, ToComputedValue};
use style::values::distance::ComputeSquaredDistance;
use style::values::specified;
use style::values::specified::gecko::IntersectionObserverRootMargin;
use style_traits::{PARSING_MODE_DEFAULT, ToCss};
use super::error_reporter::ErrorReporter;
use super::stylesheet_loader::StylesheetLoader;
@ -2212,6 +2213,7 @@ pub extern "C" fn Servo_ParseEasing(
) -> bool {
use style::properties::longhands::transition_timing_function;
// FIXME Dummy URL data would work fine here.
let url_data = unsafe { RefPtr::from_ptr_ref(&data) };
let context = ParserContext::new(Origin::Author,
url_data,
@ -4270,3 +4272,39 @@ pub extern "C" fn Servo_ComputeColor(
Err(_) => false,
}
}
#[no_mangle]
pub extern "C" fn Servo_ParseIntersectionObserverRootMargin(
value: *const nsAString,
result: *mut structs::nsCSSRect,
) -> bool {
let value = unsafe { value.as_ref().unwrap().to_string() };
let result = unsafe { result.as_mut().unwrap() };
let mut input = ParserInput::new(&value);
let mut parser = Parser::new(&mut input);
let url_data = unsafe { dummy_url_data() };
let context = ParserContext::new(
Origin::Author,
url_data,
Some(CssRuleType::Style),
PARSING_MODE_DEFAULT,
QuirksMode::NoQuirks,
);
let margin = parser.parse_entirely(|p| {
IntersectionObserverRootMargin::parse(&context, p)
});
match margin {
Ok(margin) => {
let rect = margin.0;
result.mTop.set_from(rect.0);
result.mRight.set_from(rect.1);
result.mBottom.set_from(rect.2);
result.mLeft.set_from(rect.3);
true
}
Err(..) => false,
}
}