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-rw-r--r--components/style/gecko/non_ts_pseudo_class_list.rs3
-rw-r--r--components/style/gecko/selector_parser.rs5
-rw-r--r--components/style/gecko/wrapper.rs3
3 files changed, 8 insertions, 3 deletions
diff --git a/components/style/gecko/non_ts_pseudo_class_list.rs b/components/style/gecko/non_ts_pseudo_class_list.rs
index 5b1b056ba91..f6551ce90d4 100644
--- a/components/style/gecko/non_ts_pseudo_class_list.rs
+++ b/components/style/gecko/non_ts_pseudo_class_list.rs
@@ -25,8 +25,6 @@
*
* Pending pseudo-classes:
*
- * :-moz-is-html -> Used only in UA sheets, should be easy to support.
- *
* :-moz-lwtheme, :-moz-lwtheme-brighttext, :-moz-lwtheme-darktext,
* :-moz-window-inactive.
*
@@ -108,6 +106,7 @@ macro_rules! apply_non_ts_list {
("-moz-last-node", MozLastNode, lastNode, _, _),
("-moz-only-whitespace", MozOnlyWhitespace, mozOnlyWhitespace, _, _),
("-moz-native-anonymous", MozNativeAnonymous, mozNativeAnonymous, _, PSEUDO_CLASS_INTERNAL),
+ ("-moz-is-html", MozIsHTML, mozIsHTML, _, _),
],
string: [
("-moz-system-metric", MozSystemMetric, mozSystemMetric, _, PSEUDO_CLASS_INTERNAL),
diff --git a/components/style/gecko/selector_parser.rs b/components/style/gecko/selector_parser.rs
index e46b8c489f5..22abaf63b67 100644
--- a/components/style/gecko/selector_parser.rs
+++ b/components/style/gecko/selector_parser.rs
@@ -164,7 +164,10 @@ impl NonTSPseudoClass {
// revalidation, because we already compare states for elements and
// candidates.
self.state_flag().is_empty() &&
- !matches!(*self, NonTSPseudoClass::MozAny(_) | NonTSPseudoClass::Dir(_))
+ !matches!(*self,
+ NonTSPseudoClass::MozAny(_) |
+ NonTSPseudoClass::Dir(_) |
+ NonTSPseudoClass::MozIsHTML)
}
/// Convert NonTSPseudoClass to Gecko's CSSPseudoClassType.
diff --git a/components/style/gecko/wrapper.rs b/components/style/gecko/wrapper.rs
index c38d3b73c93..c171404d3eb 100644
--- a/components/style/gecko/wrapper.rs
+++ b/components/style/gecko/wrapper.rs
@@ -1217,6 +1217,9 @@ impl<'le> ::selectors::Element for GeckoElement<'le> {
NonTSPseudoClass::MozNativeAnonymous => unsafe {
Gecko_MatchesElement(pseudo_class.to_gecko_pseudoclasstype().unwrap(), self.0)
},
+ NonTSPseudoClass::MozIsHTML => {
+ self.is_html_element_in_html_document()
+ }
NonTSPseudoClass::MozAny(ref sels) => {
sels.iter().any(|s| {
matches_complex_selector(s, self, context, flags_setter)