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Add a mechanism for "internal" CSS properties

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… that can only be parsed in a user-agent stylesheet.
This commit is contained in:
Simon Sapin 2016-03-04 19:46:54 +01:00
parent b4cae84e9e
commit 7126fdfc10
1 changed files with 30 additions and 11 deletions
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41
components/style/properties.mako.rs
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@ -51,26 +51,29 @@ def to_camel_case(ident):
return re.sub("_([a-z])", lambda m: m.group(1).upper(), ident.strip("_").capitalize())
class Longhand(object):
def __init__(self, name, derived_from=None, custom_cascade=False, experimental=False):
def __init__(self, name, derived_from=None, custom_cascade=False, experimental=False,
internal=False):
self.name = name
self.ident = to_rust_ident(name)
self.camel_case = to_camel_case(self.ident)
self.style_struct = THIS_STYLE_STRUCT
self.experimental = ("layout.%s.enabled" % name) if experimental else None
self.custom_cascade = custom_cascade
self.internal = internal
if derived_from is None:
self.derived_from = None
else:
self.derived_from = [ to_rust_ident(name) for name in derived_from ]
class Shorthand(object):
def __init__(self, name, sub_properties, experimental=False):
def __init__(self, name, sub_properties, experimental=False, internal=False):
self.name = name
self.ident = to_rust_ident(name)
self.camel_case = to_camel_case(self.ident)
self.derived_from = None
self.experimental = ("layout.%s.enabled" % name) if experimental else None
self.sub_properties = [LONGHANDS_BY_NAME[s] for s in sub_properties]
self.internal = internal
class StyleStruct(object):
def __init__(self, name, inherited):
@ -109,7 +112,8 @@ pub mod longhands {
use parser::ParserContext;
use values::specified;
<%def name="raw_longhand(name, derived_from=None, custom_cascade=False, experimental=False)">
<%def name="raw_longhand(name, derived_from=None, custom_cascade=False, experimental=False,
internal=False)">
<%
if derived_from is not None:
derived_from = derived_from.split()
@ -117,7 +121,8 @@ pub mod longhands {
property = Longhand(name,
derived_from=derived_from,
custom_cascade=custom_cascade,
experimental=experimental)
experimental=experimental,
internal=internal)
property.style_struct = THIS_STYLE_STRUCT
THIS_STYLE_STRUCT.longhands.append(property)
LONGHANDS.append(property)
@ -234,9 +239,11 @@ pub mod longhands {
}
</%def>
<%def name="longhand(name, derived_from=None, custom_cascade=False, experimental=False)">
<%def name="longhand(name, derived_from=None, custom_cascade=False, experimental=False,
internal=False)">
<%self:raw_longhand name="${name}" derived_from="${derived_from}"
custom_cascade="${custom_cascade}" experimental="${experimental}">
custom_cascade="${custom_cascade}" experimental="${experimental}"
internal="${internal}">
${caller.body()}
% if derived_from is None:
pub fn parse_specified(context: &ParserContext, input: &mut Parser)
@ -247,9 +254,10 @@ pub mod longhands {
</%self:raw_longhand>
</%def>
<%def name="single_keyword_computed(name, values, custom_cascade=False, experimental=False)">
<%def name="single_keyword_computed(name, values, custom_cascade=False, experimental=False,
internal=False)">
<%self:longhand name="${name}" custom_cascade="${custom_cascade}"
experimental="${experimental}">
experimental="${experimental}" internal="${internal}">
pub use self::computed_value::T as SpecifiedValue;
${caller.body()}
pub mod computed_value {
@ -269,10 +277,11 @@ pub mod longhands {
</%self:longhand>
</%def>
<%def name="single_keyword(name, values, experimental=False)">
<%def name="single_keyword(name, values, experimental=False, internal=False)">
<%self:single_keyword_computed name="${name}"
values="${values}"
experimental="${experimental}">
experimental="${experimental}"
internal="${internal}">
use values::computed::ComputedValueAsSpecified;
impl ComputedValueAsSpecified for SpecifiedValue {}
</%self:single_keyword_computed>
@ -6054,6 +6063,11 @@ impl PropertyDeclaration {
% for property in LONGHANDS:
% if property.derived_from is None:
"${property.name}" => {
% if property.internal:
if context.stylesheet_origin != Origin::UserAgent {
return PropertyDeclarationParseResult::UnknownProperty
}
% endif
% if property.experimental:
if !::util::prefs::get_pref("${property.experimental}")
.as_boolean().unwrap_or(false) {
@ -6074,6 +6088,11 @@ impl PropertyDeclaration {
% endfor
% for shorthand in SHORTHANDS:
"${shorthand.name}" => {
% if shorthand.internal:
if context.stylesheet_origin != Origin::UserAgent {
return PropertyDeclarationParseResult::UnknownProperty
}
% endif
% if shorthand.experimental:
if !::util::prefs::get_pref("${shorthand.experimental}")
.as_boolean().unwrap_or(false) {
@ -7011,7 +7030,7 @@ macro_rules! css_properties_accessors {
($macro_name: ident) => {
$macro_name! {
% for property in SHORTHANDS + LONGHANDS:
% if property.derived_from is None:
% if property.derived_from is None and not property.internal:
% if '-' in property.name:
[${property.ident.capitalize()}, Set${property.ident.capitalize()}, "${property.name}"],
% endif