From bf004bb63bcc9e2ea5f9417461ecb3042b27a2fa Mon Sep 17 00:00:00 2001 From: Gaming4JC Date: Sun, 5 Jan 2020 12:13:14 -0500 Subject: Bug 1334051 - Part 2: Invoke attributeChangedCallback only if attribute name is in the observed attribute list. We call attributeChangedCallback in two cases: 1. When any of the attributes in the observed attribute list has changed, appended, removed, or replaced. 2. When upgrading an element, for each attribute in element's attribute list that is in the observed attribute list. Note: w/ Fixup for not implementing an API Enhancement Bug 1363481. Tag UXP Issue #1344 --- dom/base/nsContentUtils.cpp | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'dom/base/nsContentUtils.cpp') diff --git a/dom/base/nsContentUtils.cpp b/dom/base/nsContentUtils.cpp index b8ee09bf6..570065dba 100644 --- a/dom/base/nsContentUtils.cpp +++ b/dom/base/nsContentUtils.cpp @@ -9637,6 +9637,28 @@ nsContentUtils::SetupCustomElement(Element* aElement, return registry->SetupCustomElement(aElement, aTypeExtension); } +/* static */ CustomElementDefinition* +nsContentUtils::GetElementDefinitionIfObservingAttr(Element* aCustomElement, + nsIAtom* aExtensionType, + nsIAtom* aAttrName) +{ + nsString extType = nsDependentAtomString(aExtensionType); + NodeInfo *ni = aCustomElement->NodeInfo(); + + CustomElementDefinition* definition = + LookupCustomElementDefinition(aCustomElement->OwnerDoc(), ni->LocalName(), + ni->NamespaceID(), + extType.IsEmpty() ? nullptr : &extType); + + // Custom element not defined yet or attribute is not in the observed + // attribute list. + if (!definition || !definition->IsInObservedAttributeList(aAttrName)) { + return nullptr; + } + + return definition; +} + /* static */ void nsContentUtils::EnqueueLifecycleCallback(nsIDocument* aDoc, nsIDocument::ElementCallbackType aType, -- cgit v1.2.3