summaryrefslogtreecommitdiff
path: root/layout/style
diff options
context:
space:
mode:
Diffstat (limited to 'layout/style')
-rw-r--r--layout/style/nsCSSPseudoElements.h9
-rw-r--r--layout/style/nsComputedDOMStyle.cpp7
2 files changed, 14 insertions, 2 deletions
diff --git a/layout/style/nsCSSPseudoElements.h b/layout/style/nsCSSPseudoElements.h
index acf818a2c1..64eb2f00ce 100644
--- a/layout/style/nsCSSPseudoElements.h
+++ b/layout/style/nsCSSPseudoElements.h
@@ -36,6 +36,10 @@
#define CSS_PSEUDO_ELEMENT_SUPPORTS_USER_ACTION_STATE (1<<3)
// Is content prevented from parsing selectors containing this pseudo-element?
#define CSS_PSEUDO_ELEMENT_UA_SHEET_ONLY (1<<4)
+// Can we use the ChromeOnly document.createElement(..., { pseudo: "::foo" })
+// API for creating pseudo-implementing native anonymous content in JS with this
+// pseudo-element?
+#define CSS_PSEUDO_ELEMENT_IS_JS_CREATED_NAC (1<<5)
namespace mozilla {
@@ -98,6 +102,11 @@ public:
static bool PseudoElementSupportsUserActionState(const Type aType);
+ static bool PseudoElementIsJSCreatedNAC(Type aType)
+ {
+ return PseudoElementHasFlags(aType, CSS_PSEUDO_ELEMENT_IS_JS_CREATED_NAC);
+ }
+
static bool IsEnabled(Type aType, EnabledState aEnabledState)
{
return !PseudoElementHasFlags(aType, CSS_PSEUDO_ELEMENT_UA_SHEET_ONLY) ||
diff --git a/layout/style/nsComputedDOMStyle.cpp b/layout/style/nsComputedDOMStyle.cpp
index 910c1de8ae..102e0df18c 100644
--- a/layout/style/nsComputedDOMStyle.cpp
+++ b/layout/style/nsComputedDOMStyle.cpp
@@ -717,7 +717,9 @@ nsComputedDOMStyle::UpdateCurrentStyleSources(bool aNeedsLayoutFlush)
// We want to check that going through this path because of
// HasPseudoElementData is rare, because it slows us down a good
// bit. So check that we're really inside something associated
- // with a pseudo-element that contains elements.
+ // with a pseudo-element that contains elements. (We also allow
+ // the element to be NAC, just in case some chrome JS calls
+ // getComputedStyle on a NAC-implemented pseudo.)
nsStyleContext* topWithPseudoElementData = mStyleContext;
while (topWithPseudoElementData->GetParent()->HasPseudoElementData()) {
topWithPseudoElementData = topWithPseudoElementData->GetParent();
@@ -728,7 +730,8 @@ nsComputedDOMStyle::UpdateCurrentStyleSources(bool aNeedsLayoutFlush)
NS_LITERAL_STRING("we should be in a pseudo-element that is expected to contain elements ("));
assertMsg.Append(nsDependentString(pseudoAtom->GetUTF16String()));
assertMsg.Append(')');
- NS_ASSERTION(nsCSSPseudoElements::PseudoElementContainsElements(pseudo),
+ NS_ASSERTION(nsCSSPseudoElements::PseudoElementContainsElements(pseudo) ||
+ mElement->IsNativeAnonymous(),
NS_LossyConvertUTF16toASCII(assertMsg).get());
}
#endif