dom/bindings/test/TestReflectedHTMLAttribute.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/TestReflectedHTMLAttribute.h"
   8 #include "mozilla/dom/TestFunctionsBinding.h"
   9
  10 namespace mozilla::dom {
  11
  12 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(TestReflectedHTMLAttribute,
  13                                       mCachedElements, mNewElements)
  14
  15 /* static */
  16 already_AddRefed<TestReflectedHTMLAttribute>
  17 TestReflectedHTMLAttribute::Constructor(GlobalObject& aGlobal) {
  18   return MakeAndAddRef<TestReflectedHTMLAttribute>();
  19 }
  20
  21 template <typename ArrayLike>
  22 static void AssignElements(const ArrayLike& aFrom,
  23                            Nullable<nsTArray<RefPtr<Element>>>& aTo) {
  24   if (aTo.IsNull()) {
  25     aTo.SetValue();
  26   } else {
  27     aTo.Value().Clear();
  28   }
  29   aTo.Value().AppendElements(aFrom);
  30 }
  31
  32 void TestReflectedHTMLAttribute::GetReflectedHTMLAttribute(
  33     bool* aUseCachedValue, Nullable<nsTArray<RefPtr<Element>>>& aResult) {
  34   if (aUseCachedValue) {
  35     if (mCachedElements == mNewElements) {
  36       *aUseCachedValue = true;
  37       return;
  38     }
  39
  40     *aUseCachedValue = false;
  41   }
  42
  43   if (mNewElements.IsNull()) {
  44     mCachedElements.SetNull();
  45     aResult.SetNull();
  46   } else {
  47     AssignElements(mNewElements.Value(), mCachedElements);
  48     aResult.SetValue(mCachedElements.Value().Clone());
  49   }
  50 }
  51
  52 void TestReflectedHTMLAttribute::SetReflectedHTMLAttribute(
  53     const Nullable<Sequence<OwningNonNull<Element>>>& aValue) {
  54   // We're just testing getters, so do nothing. But this would either clear or
  55   // set the "explicitly set attr-elements".
  56 }
  57
  58 void TestReflectedHTMLAttribute::SetReflectedHTMLAttributeValue(
  59     const Sequence<OwningNonNull<Element>>& aElements) {
  60   AssignElements(aElements, mNewElements);
  61 }
  62
  63 JSObject* TestReflectedHTMLAttribute::WrapObject(
  64     JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
  65   return TestReflectedHTMLAttribute_Binding::Wrap(aCx, this, aGivenProto);
  66 }
  67
  68 }  // namespace mozilla::dom