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Bug 727625 - remove childless nsDOMCSSAttributeDeclaration from the purple buffer. r=smaug

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This commit is contained in:
Andrew McCreight 2012-02-16 08:45:19 -08:00
parent 985b12c103
commit daba4f3655
2 changed files with 21 additions and 2 deletions
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19
layout/style/nsDOMCSSAttrDeclaration.cpp
View File

@ -49,6 +49,7 @@
#include "nsIPrincipal.h"
#include "nsIURI.h"
#include "nsNodeUtils.h"
#include "nsGenericElement.h"
namespace css = mozilla::css;
namespace dom = mozilla::dom;
@ -68,8 +69,26 @@ nsDOMCSSAttributeDeclaration::~nsDOMCSSAttributeDeclaration()
MOZ_COUNT_DTOR(nsDOMCSSAttributeDeclaration);
}
// If nsDOMCSSAttributeDeclaration is changed so that any additional
// fields are traversed by the cycle collector (for instance, if
// wrapper cache handling is changed) then CAN_SKIP must be updated.
NS_IMPL_CYCLE_COLLECTION_1(nsDOMCSSAttributeDeclaration, mElement)
// nsDOMCSSAttributeDeclaration has only one cycle collected field, so
// if mElement is going to be skipped, the attribute declaration can't
// be part of a garbage cycle.
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(nsDOMCSSAttributeDeclaration)
return !tmp->mElement || nsGenericElement::CanSkip(tmp->mElement, true);
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(nsDOMCSSAttributeDeclaration)
return !tmp->mElement || nsGenericElement::CanSkipInCC(tmp->mElement);
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
// CanSkipThis returns false to avoid problems with incomplete unlinking.
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(nsDOMCSSAttributeDeclaration)
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
NS_INTERFACE_MAP_BEGIN(nsDOMCSSAttributeDeclaration)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRIES_CYCLE_COLLECTION(nsDOMCSSAttributeDeclaration)

4
layout/style/nsDOMCSSAttrDeclaration.h
View File

@ -66,8 +66,8 @@ public:
~nsDOMCSSAttributeDeclaration();
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsDOMCSSAttributeDeclaration,
nsICSSDeclaration)
NS_DECL_CYCLE_COLLECTION_SKIPPABLE_CLASS_AMBIGUOUS(nsDOMCSSAttributeDeclaration,
nsICSSDeclaration)
// If GetCSSDeclaration returns non-null, then the decl it returns
// is owned by our current style rule.