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stylo: support all overflow values

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MozReview-Commit-ID: 1iQdUDsb6u9
This commit is contained in:
Manish Goregaokar 2017-04-24 19:47:37 -07:00 • committed by Manish Goregaokar
parent e3e10ada09
commit f8e298b2b3
10 changed files with 63 additions and 81 deletions
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50
components/style/properties/longhand/box.mako.rs
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@ -351,57 +351,23 @@ ${helpers.single_keyword("overflow-clip-box", "padding-box content-box",
spec="Internal, not web-exposed, \
may be standardized in the future (https://developer.mozilla.org/en-US/docs/Web/CSS/overflow-clip-box)")}
<%
overflow_custom_consts = { "-moz-hidden-unscrollable": "CLIP" }
%>
// FIXME(pcwalton, #2742): Implement scrolling for `scroll` and `auto`.
${helpers.single_keyword("overflow-x", "visible hidden scroll auto",
extra_gecko_values="clip",
need_clone=True, animation_value_type="none",
extra_gecko_aliases="-moz-scrollbars-none=hidden",
extra_gecko_values="-moz-hidden-unscrollable",
custom_consts=overflow_custom_consts,
gecko_constant_prefix="NS_STYLE_OVERFLOW",
spec="https://drafts.csswg.org/css-overflow/#propdef-overflow-x")}
// FIXME(pcwalton, #2742): Implement scrolling for `scroll` and `auto`.
<%helpers:longhand name="overflow-y" need_clone="True" animation_value_type="none"
spec="https://drafts.csswg.org/css-overflow/#propdef-overflow-y">
use super::overflow_x;
use std::fmt;
use style_traits::ToCss;
use values::computed::ComputedValueAsSpecified;
use values::HasViewportPercentage;
no_viewport_percentage!(SpecifiedValue);
impl ToCss for SpecifiedValue {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
self.0.to_css(dest)
}
}
/// The specified and computed value for overflow-y is a wrapper on top of
/// `overflow-x`, so we re-use the logic, but prevent errors from mistakenly
/// assign one to other.
///
/// TODO(Manishearth, emilio): We may want to just use the same value.
pub mod computed_value {
pub use super::SpecifiedValue as T;
}
#[derive(Debug, Clone, Copy, PartialEq)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
pub struct SpecifiedValue(pub super::overflow_x::SpecifiedValue);
impl ComputedValueAsSpecified for SpecifiedValue {}
#[inline]
#[allow(missing_docs)]
pub fn get_initial_value() -> computed_value::T {
computed_value::T(overflow_x::get_initial_value())
}
#[inline]
#[allow(missing_docs)]
pub fn parse(context: &ParserContext, input: &mut Parser) -> Result<SpecifiedValue,()> {
overflow_x::parse(context, input).map(SpecifiedValue)
}
pub use super::overflow_x::{SpecifiedValue, parse, get_initial_value, computed_value};
</%helpers:longhand>
<%helpers:vector_longhand name="transition-duration"