mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-09 06:22:08 +00:00
67d7e8dcdc
--HG-- extra : rebase_source : 48d6fd63e016abe7a6ce22e621d25858560e61f1
1219 lines
41 KiB
C++
1219 lines
41 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/CustomElementRegistry.h"
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#include "mozilla/CycleCollectedJSContext.h"
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#include "mozilla/dom/CustomElementRegistryBinding.h"
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#include "mozilla/dom/HTMLElementBinding.h"
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#include "mozilla/dom/WebComponentsBinding.h"
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#include "mozilla/dom/DocGroup.h"
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#include "nsHTMLTags.h"
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#include "jsapi.h"
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namespace mozilla {
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namespace dom {
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void
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CustomElementCallback::Call()
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{
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IgnoredErrorResult rv;
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switch (mType) {
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case nsIDocument::eCreated:
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{
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// For the duration of this callback invocation, the element is being created
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// flag must be set to true.
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mOwnerData->mElementIsBeingCreated = true;
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// The callback hasn't actually been invoked yet, but we need to flip
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// this now in order to enqueue the connected callback. This is a spec
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// bug (w3c bug 27437).
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mOwnerData->mCreatedCallbackInvoked = true;
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// If ELEMENT is connected, enqueue connected callback for ELEMENT.
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nsIDocument* document = mThisObject->GetComposedDoc();
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if (document) {
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NodeInfo* ni = mThisObject->NodeInfo();
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nsDependentAtomString extType(mOwnerData->mType);
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// We need to do this because at this point, CustomElementDefinition is
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// not set to CustomElementData yet, so EnqueueLifecycleCallback will
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// fail to find the CE definition for this custom element.
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// This will go away eventually since there is no created callback in v1.
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CustomElementDefinition* definition =
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nsContentUtils::LookupCustomElementDefinition(document,
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ni->LocalName(), ni->NamespaceID(),
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extType.IsEmpty() ? nullptr : &extType);
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nsContentUtils::EnqueueLifecycleCallback(
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nsIDocument::eConnected, mThisObject, nullptr, nullptr, definition);
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}
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static_cast<LifecycleCreatedCallback *>(mCallback.get())->Call(mThisObject, rv);
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mOwnerData->mElementIsBeingCreated = false;
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break;
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}
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case nsIDocument::eConnected:
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static_cast<LifecycleConnectedCallback *>(mCallback.get())->Call(mThisObject, rv);
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break;
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case nsIDocument::eDisconnected:
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static_cast<LifecycleDisconnectedCallback *>(mCallback.get())->Call(mThisObject, rv);
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break;
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case nsIDocument::eAdopted:
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static_cast<LifecycleAdoptedCallback *>(mCallback.get())->Call(mThisObject,
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mAdoptedCallbackArgs.mOldDocument, mAdoptedCallbackArgs.mNewDocument, rv);
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break;
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case nsIDocument::eAttributeChanged:
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static_cast<LifecycleAttributeChangedCallback *>(mCallback.get())->Call(mThisObject,
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mArgs.name, mArgs.oldValue, mArgs.newValue, mArgs.namespaceURI, rv);
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break;
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}
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}
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void
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CustomElementCallback::Traverse(nsCycleCollectionTraversalCallback& aCb) const
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{
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NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(aCb, "mThisObject");
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aCb.NoteXPCOMChild(mThisObject);
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NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(aCb, "mCallback");
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aCb.NoteXPCOMChild(mCallback);
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}
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CustomElementCallback::CustomElementCallback(Element* aThisObject,
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nsIDocument::ElementCallbackType aCallbackType,
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mozilla::dom::CallbackFunction* aCallback,
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CustomElementData* aOwnerData)
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: mThisObject(aThisObject),
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mCallback(aCallback),
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mType(aCallbackType),
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mOwnerData(aOwnerData)
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{
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}
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//-----------------------------------------------------
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// CustomElementConstructor
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already_AddRefed<Element>
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CustomElementConstructor::Construct(const char* aExecutionReason,
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ErrorResult& aRv)
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{
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CallSetup s(this, aRv, aExecutionReason,
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CallbackFunction::eRethrowExceptions);
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JSContext* cx = s.GetContext();
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if (!cx) {
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MOZ_ASSERT(aRv.Failed());
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return nullptr;
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}
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JS::Rooted<JSObject*> result(cx);
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JS::Rooted<JS::Value> constructor(cx, JS::ObjectValue(*mCallback));
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if (!JS::Construct(cx, constructor, JS::HandleValueArray::empty(), &result)) {
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return nullptr;
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}
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RefPtr<Element> element;
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if (NS_FAILED(UNWRAP_OBJECT(Element, &result, element))) {
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return nullptr;
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}
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return element.forget();
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}
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//-----------------------------------------------------
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// CustomElementData
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CustomElementData::CustomElementData(nsAtom* aType)
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: CustomElementData(aType, CustomElementData::State::eUndefined)
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{
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}
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CustomElementData::CustomElementData(nsAtom* aType, State aState)
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: mType(aType)
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, mElementIsBeingCreated(false)
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, mCreatedCallbackInvoked(true)
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, mState(aState)
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{
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}
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//-----------------------------------------------------
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// CustomElementRegistry
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namespace {
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class MOZ_RAII AutoConstructionStackEntry final
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{
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public:
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AutoConstructionStackEntry(nsTArray<RefPtr<nsGenericHTMLElement>>& aStack,
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nsGenericHTMLElement* aElement)
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: mStack(aStack)
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{
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mIndex = mStack.Length();
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mStack.AppendElement(aElement);
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}
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~AutoConstructionStackEntry()
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{
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MOZ_ASSERT(mIndex == mStack.Length() - 1,
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"Removed element should be the last element");
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mStack.RemoveElementAt(mIndex);
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}
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private:
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nsTArray<RefPtr<nsGenericHTMLElement>>& mStack;
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uint32_t mIndex;
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};
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} // namespace anonymous
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// Only needed for refcounted objects.
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NS_IMPL_CYCLE_COLLECTION_CLASS(CustomElementRegistry)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CustomElementRegistry)
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tmp->mConstructors.clear();
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mCustomDefinitions)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mWhenDefinedPromiseMap)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(CustomElementRegistry)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCustomDefinitions)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWhenDefinedPromiseMap)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(CustomElementRegistry)
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for (auto iter = tmp->mCustomDefinitions.Iter(); !iter.Done(); iter.Next()) {
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aCallbacks.Trace(&iter.UserData()->mPrototype,
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"mCustomDefinitions prototype",
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aClosure);
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}
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for (ConstructorMap::Enum iter(tmp->mConstructors); !iter.empty(); iter.popFront()) {
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aCallbacks.Trace(&iter.front().mutableKey(),
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"mConstructors key",
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aClosure);
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}
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NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(CustomElementRegistry)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(CustomElementRegistry)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CustomElementRegistry)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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CustomElementRegistry::CustomElementRegistry(nsPIDOMWindowInner* aWindow)
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: mWindow(aWindow)
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, mIsCustomDefinitionRunning(false)
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{
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MOZ_ASSERT(aWindow);
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MOZ_ASSERT(aWindow->IsInnerWindow());
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MOZ_ALWAYS_TRUE(mConstructors.init());
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mozilla::HoldJSObjects(this);
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}
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CustomElementRegistry::~CustomElementRegistry()
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{
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mozilla::DropJSObjects(this);
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}
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CustomElementDefinition*
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CustomElementRegistry::LookupCustomElementDefinition(const nsAString& aLocalName,
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const nsAString* aIs) const
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{
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RefPtr<nsAtom> localNameAtom = NS_Atomize(aLocalName);
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RefPtr<nsAtom> typeAtom = aIs ? NS_Atomize(*aIs) : localNameAtom;
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CustomElementDefinition* data = mCustomDefinitions.GetWeak(typeAtom);
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if (data && data->mLocalName == localNameAtom) {
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return data;
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}
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return nullptr;
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}
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CustomElementDefinition*
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CustomElementRegistry::LookupCustomElementDefinition(JSContext* aCx,
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JSObject* aConstructor) const
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{
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JS::Rooted<JSObject*> constructor(aCx, js::CheckedUnwrap(aConstructor));
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const auto& ptr = mConstructors.lookup(constructor);
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if (!ptr) {
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return nullptr;
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}
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CustomElementDefinition* definition = mCustomDefinitions.GetWeak(ptr->value());
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MOZ_ASSERT(definition, "Definition must be found in mCustomDefinitions");
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return definition;
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}
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void
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CustomElementRegistry::RegisterUnresolvedElement(Element* aElement, nsAtom* aTypeName)
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{
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mozilla::dom::NodeInfo* info = aElement->NodeInfo();
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// Candidate may be a custom element through extension,
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// in which case the custom element type name will not
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// match the element tag name. e.g. <button is="x-button">.
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RefPtr<nsAtom> typeName = aTypeName;
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if (!typeName) {
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typeName = info->NameAtom();
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}
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if (mCustomDefinitions.GetWeak(typeName)) {
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return;
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}
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nsTArray<nsWeakPtr>* unresolved = mCandidatesMap.LookupOrAdd(typeName);
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nsWeakPtr* elem = unresolved->AppendElement();
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*elem = do_GetWeakReference(aElement);
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aElement->AddStates(NS_EVENT_STATE_UNRESOLVED);
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}
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void
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CustomElementRegistry::SetupCustomElement(Element* aElement,
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const nsAString* aTypeExtension)
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{
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RefPtr<nsAtom> tagAtom = aElement->NodeInfo()->NameAtom();
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RefPtr<nsAtom> typeAtom = aTypeExtension ?
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NS_Atomize(*aTypeExtension) : tagAtom;
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if (aTypeExtension && !aElement->HasAttr(kNameSpaceID_None, nsGkAtoms::is)) {
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// Custom element setup in the parser happens after the "is"
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// attribute is added.
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aElement->SetAttr(kNameSpaceID_None, nsGkAtoms::is, *aTypeExtension, true);
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}
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// SetupCustomElement() should be called with an element that don't have
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// CustomElementData setup, if not we will hit the assertion in
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// SetCustomElementData().
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aElement->SetCustomElementData(new CustomElementData(typeAtom));
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CustomElementDefinition* definition = LookupCustomElementDefinition(
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aElement->NodeInfo()->LocalName(), aTypeExtension);
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if (!definition) {
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// The type extension doesn't exist in the registry,
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// thus we don't need to enqueue callback or adjust
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// the "is" attribute, but it is possibly an upgrade candidate.
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RegisterUnresolvedElement(aElement, typeAtom);
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return;
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}
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if (definition->mLocalName != tagAtom) {
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// The element doesn't match the local name for the
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// definition, thus the element isn't a custom element
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// and we don't need to do anything more.
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return;
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}
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// Enqueuing the created callback will set the CustomElementData on the
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// element, causing prototype swizzling to occur in Element::WrapObject.
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// We make it synchronously for createElement/createElementNS in order to
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// pass tests. It'll be removed when we deprecate custom elements v0.
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SyncInvokeReactions(nsIDocument::eCreated, aElement, definition);
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}
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/* static */ UniquePtr<CustomElementCallback>
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CustomElementRegistry::CreateCustomElementCallback(
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nsIDocument::ElementCallbackType aType, Element* aCustomElement,
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LifecycleCallbackArgs* aArgs,
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LifecycleAdoptedCallbackArgs* aAdoptedCallbackArgs,
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CustomElementDefinition* aDefinition)
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{
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MOZ_ASSERT(aDefinition, "CustomElementDefinition should not be null");
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RefPtr<CustomElementData> elementData = aCustomElement->GetCustomElementData();
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MOZ_ASSERT(elementData, "CustomElementData should exist");
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// Let CALLBACK be the callback associated with the key NAME in CALLBACKS.
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CallbackFunction* func = nullptr;
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switch (aType) {
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case nsIDocument::eCreated:
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if (aDefinition->mCallbacks->mCreatedCallback.WasPassed()) {
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func = aDefinition->mCallbacks->mCreatedCallback.Value();
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}
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break;
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case nsIDocument::eConnected:
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if (aDefinition->mCallbacks->mConnectedCallback.WasPassed()) {
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func = aDefinition->mCallbacks->mConnectedCallback.Value();
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}
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break;
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case nsIDocument::eDisconnected:
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if (aDefinition->mCallbacks->mDisconnectedCallback.WasPassed()) {
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func = aDefinition->mCallbacks->mDisconnectedCallback.Value();
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}
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break;
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case nsIDocument::eAdopted:
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if (aDefinition->mCallbacks->mAdoptedCallback.WasPassed()) {
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func = aDefinition->mCallbacks->mAdoptedCallback.Value();
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}
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break;
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case nsIDocument::eAttributeChanged:
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if (aDefinition->mCallbacks->mAttributeChangedCallback.WasPassed()) {
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func = aDefinition->mCallbacks->mAttributeChangedCallback.Value();
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}
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break;
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}
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// If there is no such callback, stop.
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if (!func) {
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return nullptr;
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}
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if (aType == nsIDocument::eCreated) {
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elementData->mCreatedCallbackInvoked = false;
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} else if (!elementData->mCreatedCallbackInvoked) {
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// Callbacks other than created callback must not be enqueued
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// until after the created callback has been invoked.
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return nullptr;
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}
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// Add CALLBACK to ELEMENT's callback queue.
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auto callback =
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MakeUnique<CustomElementCallback>(aCustomElement, aType, func, elementData);
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if (aArgs) {
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callback->SetArgs(*aArgs);
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}
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if (aAdoptedCallbackArgs) {
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callback->SetAdoptedCallbackArgs(*aAdoptedCallbackArgs);
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}
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return Move(callback);
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}
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void
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CustomElementRegistry::SyncInvokeReactions(nsIDocument::ElementCallbackType aType,
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Element* aCustomElement,
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CustomElementDefinition* aDefinition)
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{
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auto callback = CreateCustomElementCallback(aType, aCustomElement, nullptr,
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nullptr, aDefinition);
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if (!callback) {
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return;
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}
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UniquePtr<CustomElementReaction> reaction(Move(
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MakeUnique<CustomElementCallbackReaction>(Move(callback))));
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RefPtr<SyncInvokeReactionRunnable> runnable =
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new SyncInvokeReactionRunnable(Move(reaction), aCustomElement);
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nsContentUtils::AddScriptRunner(runnable);
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}
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/* static */ void
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CustomElementRegistry::EnqueueLifecycleCallback(nsIDocument::ElementCallbackType aType,
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Element* aCustomElement,
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LifecycleCallbackArgs* aArgs,
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LifecycleAdoptedCallbackArgs* aAdoptedCallbackArgs,
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CustomElementDefinition* aDefinition)
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{
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CustomElementDefinition* definition = aDefinition;
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if (!definition) {
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definition = aCustomElement->GetCustomElementDefinition();
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if (!definition ||
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definition->mLocalName != aCustomElement->NodeInfo()->NameAtom()) {
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return;
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}
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}
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auto callback =
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CreateCustomElementCallback(aType, aCustomElement, aArgs,
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aAdoptedCallbackArgs, definition);
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if (!callback) {
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return;
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}
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DocGroup* docGroup = aCustomElement->OwnerDoc()->GetDocGroup();
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if (!docGroup) {
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return;
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}
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if (aType == nsIDocument::eAttributeChanged) {
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RefPtr<nsAtom> attrName = NS_Atomize(aArgs->name);
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if (definition->mObservedAttributes.IsEmpty() ||
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!definition->mObservedAttributes.Contains(attrName)) {
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return;
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}
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}
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CustomElementReactionsStack* reactionsStack =
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docGroup->CustomElementReactionsStack();
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reactionsStack->EnqueueCallbackReaction(aCustomElement, Move(callback));
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}
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void
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CustomElementRegistry::GetCustomPrototype(nsAtom* aAtom,
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JS::MutableHandle<JSObject*> aPrototype)
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{
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mozilla::dom::CustomElementDefinition* definition =
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mCustomDefinitions.GetWeak(aAtom);
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if (definition) {
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aPrototype.set(definition->mPrototype);
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} else {
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aPrototype.set(nullptr);
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}
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}
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void
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CustomElementRegistry::UpgradeCandidates(nsAtom* aKey,
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CustomElementDefinition* aDefinition,
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ErrorResult& aRv)
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{
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DocGroup* docGroup = mWindow->GetDocGroup();
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if (!docGroup) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return;
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}
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// TODO: Bug 1326028 - Upgrade custom element in shadow-including tree order
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nsAutoPtr<nsTArray<nsWeakPtr>> candidates;
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if (mCandidatesMap.Remove(aKey, &candidates)) {
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MOZ_ASSERT(candidates);
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CustomElementReactionsStack* reactionsStack =
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docGroup->CustomElementReactionsStack();
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for (size_t i = 0; i < candidates->Length(); ++i) {
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nsCOMPtr<Element> elem = do_QueryReferent(candidates->ElementAt(i));
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if (!elem) {
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continue;
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}
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reactionsStack->EnqueueUpgradeReaction(elem, aDefinition);
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}
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}
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}
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JSObject*
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CustomElementRegistry::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return CustomElementRegistryBinding::Wrap(aCx, this, aGivenProto);
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}
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nsISupports* CustomElementRegistry::GetParentObject() const
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{
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return mWindow;
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}
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static const char* kLifeCycleCallbackNames[] = {
|
|
"connectedCallback",
|
|
"disconnectedCallback",
|
|
"adoptedCallback",
|
|
"attributeChangedCallback",
|
|
// The life cycle callbacks from v0 spec.
|
|
"createdCallback"
|
|
};
|
|
|
|
static void
|
|
CheckLifeCycleCallbacks(JSContext* aCx,
|
|
JS::Handle<JSObject*> aConstructor,
|
|
ErrorResult& aRv)
|
|
{
|
|
for (size_t i = 0; i < ArrayLength(kLifeCycleCallbackNames); ++i) {
|
|
const char* callbackName = kLifeCycleCallbackNames[i];
|
|
JS::Rooted<JS::Value> callbackValue(aCx);
|
|
if (!JS_GetProperty(aCx, aConstructor, callbackName, &callbackValue)) {
|
|
aRv.StealExceptionFromJSContext(aCx);
|
|
return;
|
|
}
|
|
if (!callbackValue.isUndefined()) {
|
|
if (!callbackValue.isObject()) {
|
|
aRv.ThrowTypeError<MSG_NOT_OBJECT>(NS_ConvertASCIItoUTF16(callbackName));
|
|
return;
|
|
}
|
|
JS::Rooted<JSObject*> callback(aCx, &callbackValue.toObject());
|
|
if (!JS::IsCallable(callback)) {
|
|
aRv.ThrowTypeError<MSG_NOT_CALLABLE>(NS_ConvertASCIItoUTF16(callbackName));
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/scripting.html#element-definition
|
|
void
|
|
CustomElementRegistry::Define(const nsAString& aName,
|
|
Function& aFunctionConstructor,
|
|
const ElementDefinitionOptions& aOptions,
|
|
ErrorResult& aRv)
|
|
{
|
|
aRv.MightThrowJSException();
|
|
|
|
AutoJSAPI jsapi;
|
|
if (NS_WARN_IF(!jsapi.Init(mWindow))) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
JSContext *cx = jsapi.cx();
|
|
// Note: No calls that might run JS or trigger CC before this point, or
|
|
// there's a (vanishingly small) chance of our constructor being nulled
|
|
// before we access it.
|
|
JS::Rooted<JSObject*> constructor(cx, aFunctionConstructor.CallableOrNull());
|
|
|
|
/**
|
|
* 1. If IsConstructor(constructor) is false, then throw a TypeError and abort
|
|
* these steps.
|
|
*/
|
|
// For now, all wrappers are constructable if they are callable. So we need to
|
|
// unwrap constructor to check it is really constructable.
|
|
JS::Rooted<JSObject*> constructorUnwrapped(cx, js::CheckedUnwrap(constructor));
|
|
if (!constructorUnwrapped) {
|
|
// If the caller's compartment does not have permission to access the
|
|
// unwrapped constructor then throw.
|
|
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
|
|
return;
|
|
}
|
|
|
|
if (!JS::IsConstructor(constructorUnwrapped)) {
|
|
aRv.ThrowTypeError<MSG_NOT_CONSTRUCTOR>(NS_LITERAL_STRING("Argument 2 of CustomElementRegistry.define"));
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* 2. If name is not a valid custom element name, then throw a "SyntaxError"
|
|
* DOMException and abort these steps.
|
|
*/
|
|
RefPtr<nsAtom> nameAtom(NS_Atomize(aName));
|
|
if (!nsContentUtils::IsCustomElementName(nameAtom)) {
|
|
aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* 3. If this CustomElementRegistry contains an entry with name name, then
|
|
* throw a "NotSupportedError" DOMException and abort these steps.
|
|
*/
|
|
if (mCustomDefinitions.GetWeak(nameAtom)) {
|
|
aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* 4. If this CustomElementRegistry contains an entry with constructor constructor,
|
|
* then throw a "NotSupportedError" DOMException and abort these steps.
|
|
*/
|
|
const auto& ptr = mConstructors.lookup(constructorUnwrapped);
|
|
if (ptr) {
|
|
MOZ_ASSERT(mCustomDefinitions.GetWeak(ptr->value()),
|
|
"Definition must be found in mCustomDefinitions");
|
|
aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* 5. Let localName be name.
|
|
* 6. Let extends be the value of the extends member of options, or null if
|
|
* no such member exists.
|
|
* 7. If extends is not null, then:
|
|
* 1. If extends is a valid custom element name, then throw a
|
|
* "NotSupportedError" DOMException.
|
|
* 2. If the element interface for extends and the HTML namespace is
|
|
* HTMLUnknownElement (e.g., if extends does not indicate an element
|
|
* definition in this specification), then throw a "NotSupportedError"
|
|
* DOMException.
|
|
* 3. Set localName to extends.
|
|
*/
|
|
nsAutoString localName(aName);
|
|
if (aOptions.mExtends.WasPassed()) {
|
|
RefPtr<nsAtom> extendsAtom(NS_Atomize(aOptions.mExtends.Value()));
|
|
if (nsContentUtils::IsCustomElementName(extendsAtom)) {
|
|
aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
|
|
return;
|
|
}
|
|
|
|
// bgsound and multicol are unknown html element.
|
|
int32_t tag = nsHTMLTags::CaseSensitiveAtomTagToId(extendsAtom);
|
|
if (tag == eHTMLTag_userdefined ||
|
|
tag == eHTMLTag_bgsound ||
|
|
tag == eHTMLTag_multicol) {
|
|
aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
|
|
return;
|
|
}
|
|
|
|
localName.Assign(aOptions.mExtends.Value());
|
|
}
|
|
|
|
/**
|
|
* 8. If this CustomElementRegistry's element definition is running flag is set,
|
|
* then throw a "NotSupportedError" DOMException and abort these steps.
|
|
*/
|
|
if (mIsCustomDefinitionRunning) {
|
|
aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
|
|
return;
|
|
}
|
|
|
|
JS::Rooted<JSObject*> constructorPrototype(cx);
|
|
nsAutoPtr<LifecycleCallbacks> callbacksHolder(new LifecycleCallbacks());
|
|
nsTArray<RefPtr<nsAtom>> observedAttributes;
|
|
{ // Set mIsCustomDefinitionRunning.
|
|
/**
|
|
* 9. Set this CustomElementRegistry's element definition is running flag.
|
|
*/
|
|
AutoSetRunningFlag as(this);
|
|
|
|
{ // Enter constructor's compartment.
|
|
/**
|
|
* 10.1. Let prototype be Get(constructor, "prototype"). Rethrow any exceptions.
|
|
*/
|
|
JSAutoCompartment ac(cx, constructor);
|
|
JS::Rooted<JS::Value> prototypev(cx);
|
|
// The .prototype on the constructor passed from document.registerElement
|
|
// is the "expando" of a wrapper. So we should get it from wrapper instead
|
|
// instead of underlying object.
|
|
if (!JS_GetProperty(cx, constructor, "prototype", &prototypev)) {
|
|
aRv.StealExceptionFromJSContext(cx);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* 10.2. If Type(prototype) is not Object, then throw a TypeError exception.
|
|
*/
|
|
if (!prototypev.isObject()) {
|
|
aRv.ThrowTypeError<MSG_NOT_OBJECT>(NS_LITERAL_STRING("constructor.prototype"));
|
|
return;
|
|
}
|
|
|
|
constructorPrototype = &prototypev.toObject();
|
|
} // Leave constructor's compartment.
|
|
|
|
JS::Rooted<JSObject*> constructorProtoUnwrapped(cx, js::CheckedUnwrap(constructorPrototype));
|
|
if (!constructorProtoUnwrapped) {
|
|
// If the caller's compartment does not have permission to access the
|
|
// unwrapped prototype then throw.
|
|
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
|
|
return;
|
|
}
|
|
|
|
{ // Enter constructorProtoUnwrapped's compartment
|
|
JSAutoCompartment ac(cx, constructorProtoUnwrapped);
|
|
|
|
/**
|
|
* 10.3. Let lifecycleCallbacks be a map with the four keys
|
|
* "connectedCallback", "disconnectedCallback", "adoptedCallback", and
|
|
* "attributeChangedCallback", each of which belongs to an entry whose
|
|
* value is null.
|
|
* 10.4. For each of the four keys callbackName in lifecycleCallbacks:
|
|
* 1. Let callbackValue be Get(prototype, callbackName). Rethrow any
|
|
* exceptions.
|
|
* 2. If callbackValue is not undefined, then set the value of the
|
|
* entry in lifecycleCallbacks with key callbackName to the result
|
|
* of converting callbackValue to the Web IDL Function callback type.
|
|
* Rethrow any exceptions from the conversion.
|
|
*/
|
|
// Will do the same checking for the life cycle callbacks from v0 spec.
|
|
CheckLifeCycleCallbacks(cx, constructorProtoUnwrapped, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
// Note: We call the init from the constructorProtoUnwrapped's compartment
|
|
// here.
|
|
JS::RootedValue rootedv(cx, JS::ObjectValue(*constructorProtoUnwrapped));
|
|
if (!JS_WrapValue(cx, &rootedv) || !callbacksHolder->Init(cx, rootedv)) {
|
|
aRv.StealExceptionFromJSContext(cx);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* 10.5. Let observedAttributes be an empty sequence<DOMString>.
|
|
* 10.6. If the value of the entry in lifecycleCallbacks with key
|
|
* "attributeChangedCallback" is not null, then:
|
|
* 1. Let observedAttributesIterable be Get(constructor,
|
|
* "observedAttributes"). Rethrow any exceptions.
|
|
* 2. If observedAttributesIterable is not undefined, then set
|
|
* observedAttributes to the result of converting
|
|
* observedAttributesIterable to a sequence<DOMString>. Rethrow
|
|
* any exceptions from the conversion.
|
|
*/
|
|
// TODO: Bug 1293921 - Implement connected/disconnected/adopted/attributeChanged lifecycle callbacks for custom elements
|
|
if (callbacksHolder->mAttributeChangedCallback.WasPassed()) {
|
|
// Enter constructor's compartment.
|
|
JSAutoCompartment ac(cx, constructor);
|
|
JS::Rooted<JS::Value> observedAttributesIterable(cx);
|
|
|
|
if (!JS_GetProperty(cx, constructor, "observedAttributes",
|
|
&observedAttributesIterable)) {
|
|
aRv.StealExceptionFromJSContext(cx);
|
|
return;
|
|
}
|
|
|
|
if (!observedAttributesIterable.isUndefined()) {
|
|
JS::ForOfIterator iter(cx);
|
|
if (!iter.init(observedAttributesIterable)) {
|
|
aRv.StealExceptionFromJSContext(cx);
|
|
return;
|
|
}
|
|
|
|
JS::Rooted<JS::Value> attribute(cx);
|
|
while (true) {
|
|
bool done;
|
|
if (!iter.next(&attribute, &done)) {
|
|
aRv.StealExceptionFromJSContext(cx);
|
|
return;
|
|
}
|
|
if (done) {
|
|
break;
|
|
}
|
|
|
|
JSString *attrJSStr = attribute.toString();
|
|
nsAutoJSString attrStr;
|
|
if (!attrStr.init(cx, attrJSStr)) {
|
|
aRv.StealExceptionFromJSContext(cx);
|
|
return;
|
|
}
|
|
observedAttributes.AppendElement(NS_Atomize(attrStr));
|
|
}
|
|
}
|
|
} // Leave constructor's compartment.
|
|
} // Leave constructorProtoUnwrapped's compartment.
|
|
} // Unset mIsCustomDefinitionRunning
|
|
|
|
/**
|
|
* 11. Let definition be a new custom element definition with name name,
|
|
* local name localName, constructor constructor, prototype prototype,
|
|
* observed attributes observedAttributes, and lifecycle callbacks
|
|
* lifecycleCallbacks.
|
|
*/
|
|
// Associate the definition with the custom element.
|
|
RefPtr<nsAtom> localNameAtom(NS_Atomize(localName));
|
|
LifecycleCallbacks* callbacks = callbacksHolder.forget();
|
|
|
|
/**
|
|
* 12. Add definition to this CustomElementRegistry.
|
|
*/
|
|
if (!mConstructors.put(constructorUnwrapped, nameAtom)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
RefPtr<CustomElementDefinition> definition =
|
|
new CustomElementDefinition(nameAtom,
|
|
localNameAtom,
|
|
&aFunctionConstructor,
|
|
Move(observedAttributes),
|
|
constructorPrototype,
|
|
callbacks,
|
|
0 /* TODO dependent on HTML imports. Bug 877072 */);
|
|
|
|
CustomElementDefinition* def = definition.get();
|
|
mCustomDefinitions.Put(nameAtom, definition.forget());
|
|
|
|
MOZ_ASSERT(mCustomDefinitions.Count() == mConstructors.count(),
|
|
"Number of entries should be the same");
|
|
|
|
/**
|
|
* 13. 14. 15. Upgrade candidates
|
|
*/
|
|
UpgradeCandidates(nameAtom, def, aRv);
|
|
|
|
/**
|
|
* 16. If this CustomElementRegistry's when-defined promise map contains an
|
|
* entry with key name:
|
|
* 1. Let promise be the value of that entry.
|
|
* 2. Resolve promise with undefined.
|
|
* 3. Delete the entry with key name from this CustomElementRegistry's
|
|
* when-defined promise map.
|
|
*/
|
|
RefPtr<Promise> promise;
|
|
mWhenDefinedPromiseMap.Remove(nameAtom, getter_AddRefs(promise));
|
|
if (promise) {
|
|
promise->MaybeResolveWithUndefined();
|
|
}
|
|
|
|
}
|
|
|
|
void
|
|
CustomElementRegistry::Get(JSContext* aCx, const nsAString& aName,
|
|
JS::MutableHandle<JS::Value> aRetVal)
|
|
{
|
|
RefPtr<nsAtom> nameAtom(NS_Atomize(aName));
|
|
CustomElementDefinition* data = mCustomDefinitions.GetWeak(nameAtom);
|
|
|
|
if (!data) {
|
|
aRetVal.setUndefined();
|
|
return;
|
|
}
|
|
|
|
aRetVal.setObject(*data->mConstructor->Callback(aCx));
|
|
}
|
|
|
|
already_AddRefed<Promise>
|
|
CustomElementRegistry::WhenDefined(const nsAString& aName, ErrorResult& aRv)
|
|
{
|
|
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(mWindow);
|
|
RefPtr<Promise> promise = Promise::Create(global, aRv);
|
|
|
|
if (aRv.Failed()) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<nsAtom> nameAtom(NS_Atomize(aName));
|
|
if (!nsContentUtils::IsCustomElementName(nameAtom)) {
|
|
promise->MaybeReject(NS_ERROR_DOM_SYNTAX_ERR);
|
|
return promise.forget();
|
|
}
|
|
|
|
if (mCustomDefinitions.GetWeak(nameAtom)) {
|
|
promise->MaybeResolve(JS::UndefinedHandleValue);
|
|
return promise.forget();
|
|
}
|
|
|
|
auto entry = mWhenDefinedPromiseMap.LookupForAdd(nameAtom);
|
|
if (entry) {
|
|
promise = entry.Data();
|
|
} else {
|
|
entry.OrInsert([&promise](){ return promise; });
|
|
}
|
|
|
|
return promise.forget();
|
|
}
|
|
|
|
namespace {
|
|
|
|
static void
|
|
DoUpgrade(Element* aElement,
|
|
CustomElementConstructor* aConstructor,
|
|
ErrorResult& aRv)
|
|
{
|
|
// Rethrow the exception since it might actually throw the exception from the
|
|
// upgrade steps back out to the caller of document.createElement.
|
|
RefPtr<Element> constructResult =
|
|
aConstructor->Construct("Custom Element Upgrade", aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
if (!constructResult || constructResult.get() != aElement) {
|
|
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
return;
|
|
}
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
// https://html.spec.whatwg.org/multipage/scripting.html#upgrades
|
|
/* static */ void
|
|
CustomElementRegistry::Upgrade(Element* aElement,
|
|
CustomElementDefinition* aDefinition,
|
|
ErrorResult& aRv)
|
|
{
|
|
aElement->RemoveStates(NS_EVENT_STATE_UNRESOLVED);
|
|
|
|
RefPtr<CustomElementData> data = aElement->GetCustomElementData();
|
|
MOZ_ASSERT(data, "CustomElementData should exist");
|
|
|
|
// Step 1 and step 2.
|
|
if (data->mState == CustomElementData::State::eCustom ||
|
|
data->mState == CustomElementData::State::eFailed) {
|
|
return;
|
|
}
|
|
|
|
// Step 3.
|
|
if (!aDefinition->mObservedAttributes.IsEmpty()) {
|
|
uint32_t count = aElement->GetAttrCount();
|
|
for (uint32_t i = 0; i < count; i++) {
|
|
mozilla::dom::BorrowedAttrInfo info = aElement->GetAttrInfoAt(i);
|
|
|
|
const nsAttrName* name = info.mName;
|
|
nsAtom* attrName = name->LocalName();
|
|
|
|
if (aDefinition->IsInObservedAttributeList(attrName)) {
|
|
int32_t namespaceID = name->NamespaceID();
|
|
nsAutoString attrValue, namespaceURI;
|
|
info.mValue->ToString(attrValue);
|
|
nsContentUtils::NameSpaceManager()->GetNameSpaceURI(namespaceID,
|
|
namespaceURI);
|
|
|
|
LifecycleCallbackArgs args = {
|
|
nsDependentAtomString(attrName),
|
|
VoidString(),
|
|
(attrValue.IsEmpty() ? VoidString() : attrValue),
|
|
(namespaceURI.IsEmpty() ? VoidString() : namespaceURI)
|
|
};
|
|
nsContentUtils::EnqueueLifecycleCallback(nsIDocument::eAttributeChanged,
|
|
aElement,
|
|
&args, nullptr, aDefinition);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Step 4.
|
|
if (aElement->IsInComposedDoc()) {
|
|
nsContentUtils::EnqueueLifecycleCallback(nsIDocument::eConnected, aElement,
|
|
nullptr, nullptr, aDefinition);
|
|
}
|
|
|
|
// Step 5.
|
|
AutoConstructionStackEntry acs(aDefinition->mConstructionStack,
|
|
nsGenericHTMLElement::FromContent(aElement));
|
|
|
|
// Step 6 and step 7.
|
|
DoUpgrade(aElement, aDefinition->mConstructor, aRv);
|
|
if (aRv.Failed()) {
|
|
data->mState = CustomElementData::State::eFailed;
|
|
// Empty element's custom element reaction queue.
|
|
data->mReactionQueue.Clear();
|
|
return;
|
|
}
|
|
|
|
// Step 8.
|
|
data->mState = CustomElementData::State::eCustom;
|
|
|
|
// Step 9.
|
|
aElement->SetCustomElementDefinition(aDefinition);
|
|
|
|
// This is for old spec.
|
|
nsContentUtils::EnqueueLifecycleCallback(nsIDocument::eCreated,
|
|
aElement, nullptr,
|
|
nullptr, aDefinition);
|
|
}
|
|
|
|
//-----------------------------------------------------
|
|
// CustomElementReactionsStack
|
|
|
|
void
|
|
CustomElementReactionsStack::CreateAndPushElementQueue()
|
|
{
|
|
// Push a new element queue onto the custom element reactions stack.
|
|
mReactionsStack.AppendElement(MakeUnique<ElementQueue>());
|
|
}
|
|
|
|
void
|
|
CustomElementReactionsStack::PopAndInvokeElementQueue()
|
|
{
|
|
// Pop the element queue from the custom element reactions stack,
|
|
// and invoke custom element reactions in that queue.
|
|
MOZ_ASSERT(!mReactionsStack.IsEmpty(),
|
|
"Reaction stack shouldn't be empty");
|
|
|
|
const uint32_t lastIndex = mReactionsStack.Length() - 1;
|
|
ElementQueue* elementQueue = mReactionsStack.ElementAt(lastIndex).get();
|
|
// Check element queue size in order to reduce function call overhead.
|
|
if (!elementQueue->IsEmpty()) {
|
|
// It is still not clear what error reporting will look like in custom
|
|
// element, see https://github.com/w3c/webcomponents/issues/635.
|
|
// We usually report the error to entry global in gecko, so just follow the
|
|
// same behavior here.
|
|
nsIGlobalObject* global = GetEntryGlobal();
|
|
MOZ_ASSERT(global, "Should always have a entry global here!");
|
|
InvokeReactions(elementQueue, global);
|
|
}
|
|
|
|
// InvokeReactions() might create other custom element reactions, but those
|
|
// new reactions should be already consumed and removed at this point.
|
|
MOZ_ASSERT(lastIndex == mReactionsStack.Length() - 1,
|
|
"reactions created by InvokeReactions() should be consumed and removed");
|
|
|
|
mReactionsStack.RemoveElementAt(lastIndex);
|
|
}
|
|
|
|
void
|
|
CustomElementReactionsStack::EnqueueUpgradeReaction(Element* aElement,
|
|
CustomElementDefinition* aDefinition)
|
|
{
|
|
Enqueue(aElement, new CustomElementUpgradeReaction(aDefinition));
|
|
}
|
|
|
|
void
|
|
CustomElementReactionsStack::EnqueueCallbackReaction(Element* aElement,
|
|
UniquePtr<CustomElementCallback> aCustomElementCallback)
|
|
{
|
|
Enqueue(aElement, new CustomElementCallbackReaction(Move(aCustomElementCallback)));
|
|
}
|
|
|
|
void
|
|
CustomElementReactionsStack::Enqueue(Element* aElement,
|
|
CustomElementReaction* aReaction)
|
|
{
|
|
RefPtr<CustomElementData> elementData = aElement->GetCustomElementData();
|
|
MOZ_ASSERT(elementData, "CustomElementData should exist");
|
|
|
|
// Add element to the current element queue.
|
|
if (!mReactionsStack.IsEmpty()) {
|
|
mReactionsStack.LastElement()->AppendElement(aElement);
|
|
elementData->mReactionQueue.AppendElement(aReaction);
|
|
return;
|
|
}
|
|
|
|
// If the custom element reactions stack is empty, then:
|
|
// Add element to the backup element queue.
|
|
mBackupQueue.AppendElement(aElement);
|
|
elementData->mReactionQueue.AppendElement(aReaction);
|
|
|
|
if (mIsBackupQueueProcessing) {
|
|
return;
|
|
}
|
|
|
|
CycleCollectedJSContext* context = CycleCollectedJSContext::Get();
|
|
RefPtr<ProcessBackupQueueRunnable> processBackupQueueRunnable =
|
|
new ProcessBackupQueueRunnable(this);
|
|
context->DispatchToMicroTask(processBackupQueueRunnable.forget());
|
|
}
|
|
|
|
void
|
|
CustomElementReactionsStack::InvokeBackupQueue()
|
|
{
|
|
// Check backup queue size in order to reduce function call overhead.
|
|
if (!mBackupQueue.IsEmpty()) {
|
|
// Upgrade reactions won't be scheduled in backup queue and the exception of
|
|
// callback reactions will be automatically reported in CallSetup.
|
|
// If the reactions are invoked from backup queue (in microtask check point),
|
|
// we don't need to pass global object for error reporting.
|
|
InvokeReactions(&mBackupQueue, nullptr);
|
|
}
|
|
}
|
|
|
|
void
|
|
CustomElementReactionsStack::InvokeReactions(ElementQueue* aElementQueue,
|
|
nsIGlobalObject* aGlobal)
|
|
{
|
|
// This is used for error reporting.
|
|
Maybe<AutoEntryScript> aes;
|
|
if (aGlobal) {
|
|
aes.emplace(aGlobal, "custom elements reaction invocation");
|
|
}
|
|
|
|
// Note: It's possible to re-enter this method.
|
|
for (uint32_t i = 0; i < aElementQueue->Length(); ++i) {
|
|
Element* element = aElementQueue->ElementAt(i);
|
|
|
|
if (!element) {
|
|
continue;
|
|
}
|
|
|
|
RefPtr<CustomElementData> elementData = element->GetCustomElementData();
|
|
if (!elementData) {
|
|
// This happens when the document is destroyed and the element is already
|
|
// unlinked, no need to fire the callbacks in this case.
|
|
return;
|
|
}
|
|
|
|
auto& reactions = elementData->mReactionQueue;
|
|
for (uint32_t j = 0; j < reactions.Length(); ++j) {
|
|
// Transfer the ownership of the entry due to reentrant invocation of
|
|
// this funciton. The entry will be removed when bug 1379573 is landed.
|
|
auto reaction(Move(reactions.ElementAt(j)));
|
|
if (reaction) {
|
|
ErrorResult rv;
|
|
reaction->Invoke(element, rv);
|
|
if (aes) {
|
|
JSContext* cx = aes->cx();
|
|
if (rv.MaybeSetPendingException(cx)) {
|
|
aes->ReportException();
|
|
}
|
|
MOZ_ASSERT(!JS_IsExceptionPending(cx));
|
|
}
|
|
MOZ_ASSERT(!rv.Failed());
|
|
}
|
|
}
|
|
reactions.Clear();
|
|
}
|
|
aElementQueue->Clear();
|
|
}
|
|
|
|
//-----------------------------------------------------
|
|
// CustomElementDefinition
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(CustomElementDefinition)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CustomElementDefinition)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mConstructor)
|
|
tmp->mPrototype = nullptr;
|
|
tmp->mCallbacks = nullptr;
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(CustomElementDefinition)
|
|
mozilla::dom::LifecycleCallbacks* callbacks = tmp->mCallbacks.get();
|
|
|
|
if (callbacks->mAttributeChangedCallback.WasPassed()) {
|
|
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb,
|
|
"mCallbacks->mAttributeChangedCallback");
|
|
cb.NoteXPCOMChild(callbacks->mAttributeChangedCallback.Value());
|
|
}
|
|
|
|
if (callbacks->mCreatedCallback.WasPassed()) {
|
|
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mCallbacks->mCreatedCallback");
|
|
cb.NoteXPCOMChild(callbacks->mCreatedCallback.Value());
|
|
}
|
|
|
|
if (callbacks->mConnectedCallback.WasPassed()) {
|
|
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mCallbacks->mConnectedCallback");
|
|
cb.NoteXPCOMChild(callbacks->mConnectedCallback.Value());
|
|
}
|
|
|
|
if (callbacks->mDisconnectedCallback.WasPassed()) {
|
|
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mCallbacks->mDisconnectedCallback");
|
|
cb.NoteXPCOMChild(callbacks->mDisconnectedCallback.Value());
|
|
}
|
|
|
|
if (callbacks->mAdoptedCallback.WasPassed()) {
|
|
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mCallbacks->mAdoptedCallback");
|
|
cb.NoteXPCOMChild(callbacks->mAdoptedCallback.Value());
|
|
}
|
|
|
|
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mConstructor");
|
|
cb.NoteXPCOMChild(tmp->mConstructor);
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(CustomElementDefinition)
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mPrototype)
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(CustomElementDefinition, AddRef)
|
|
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(CustomElementDefinition, Release)
|
|
|
|
|
|
CustomElementDefinition::CustomElementDefinition(nsAtom* aType,
|
|
nsAtom* aLocalName,
|
|
Function* aConstructor,
|
|
nsTArray<RefPtr<nsAtom>>&& aObservedAttributes,
|
|
JS::Handle<JSObject*> aPrototype,
|
|
LifecycleCallbacks* aCallbacks,
|
|
uint32_t aDocOrder)
|
|
: mType(aType),
|
|
mLocalName(aLocalName),
|
|
mConstructor(new CustomElementConstructor(aConstructor)),
|
|
mObservedAttributes(Move(aObservedAttributes)),
|
|
mPrototype(aPrototype),
|
|
mCallbacks(aCallbacks),
|
|
mDocOrder(aDocOrder)
|
|
{
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------
|
|
// CustomElementUpgradeReaction
|
|
|
|
/* virtual */ void
|
|
CustomElementUpgradeReaction::Invoke(Element* aElement, ErrorResult& aRv)
|
|
{
|
|
CustomElementRegistry::Upgrade(aElement, mDefinition, aRv);
|
|
}
|
|
|
|
//-----------------------------------------------------
|
|
// CustomElementCallbackReaction
|
|
|
|
/* virtual */ void
|
|
CustomElementCallbackReaction::Invoke(Element* aElement, ErrorResult& aRv)
|
|
{
|
|
mCustomElementCallback->Call();
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|