/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/dom/StyleSheetList.h"

#include "mozilla/dom/StyleSheetListBinding.h"
#include "nsINode.h"

namespace mozilla::dom {

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(StyleSheetList)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(StyleSheetList)
  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  NS_INTERFACE_MAP_ENTRY(nsIMutationObserver)
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END

NS_IMPL_CYCLE_COLLECTING_ADDREF(StyleSheetList)
NS_IMPL_CYCLE_COLLECTING_RELEASE(StyleSheetList)

/* virtual */
JSObject* StyleSheetList::WrapObject(JSContext* aCx,
                                     JS::Handle<JSObject*> aGivenProto) {
  return StyleSheetList_Binding::Wrap(aCx, this, aGivenProto);
}

void StyleSheetList::NodeWillBeDestroyed(nsINode* aNode) {
  mDocumentOrShadowRoot = nullptr;
}

StyleSheetList::StyleSheetList(DocumentOrShadowRoot& aScope)
    : mDocumentOrShadowRoot(&aScope) {
  SetEnabledCallbacks(nsIMutationObserver::kNodeWillBeDestroyed);
  mDocumentOrShadowRoot->AsNode().AddMutationObserver(this);
}

StyleSheetList::~StyleSheetList() {
  if (mDocumentOrShadowRoot) {
    mDocumentOrShadowRoot->AsNode().RemoveMutationObserver(this);
  }
}

}  // namespace mozilla::dom