1 files changed, 74 insertions, 0 deletions
diff --git a/dom/presentation/PresentationAvailability.h b/dom/presentation/PresentationAvailability.h
new file mode 100644
index 000000000..edfae2c02
--- /dev/null
+++ b/dom/presentation/PresentationAvailability.h
@@ -0,0 +1,74 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#ifndef mozilla_dom_PresentationAvailability_h
+#define mozilla_dom_PresentationAvailability_h
+
+#include "mozilla/DOMEventTargetHelper.h"
+#include "nsIPresentationListener.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+namespace dom {
+
+class Promise;
+
+class PresentationAvailability final : public DOMEventTargetHelper
+                                     , public nsIPresentationAvailabilityListener
+                                     , public SupportsWeakPtr<PresentationAvailability>
+{
+public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(PresentationAvailability,
+                                           DOMEventTargetHelper)
+  NS_DECL_NSIPRESENTATIONAVAILABILITYLISTENER
+  MOZ_DECLARE_WEAKREFERENCE_TYPENAME(PresentationAvailability)
+
+  static already_AddRefed<PresentationAvailability>
+  Create(nsPIDOMWindowInner* aWindow,
+         const nsTArray<nsString>& aUrls,
+         RefPtr<Promise>& aPromise);
+
+  virtual void DisconnectFromOwner() override;
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  bool Equals(const uint64_t aWindowID, const nsTArray<nsString>& aUrls) const;
+
+  bool IsCachedValueReady();
+
+  void EnqueuePromise(RefPtr<Promise>& aPromise);
+
+  // WebIDL (public APIs)
+  bool Value() const;
+
+  IMPL_EVENT_HANDLER(change);
+
+private:
+  explicit PresentationAvailability(nsPIDOMWindowInner* aWindow,
+                                    const nsTArray<nsString>& aUrls);
+
+  virtual ~PresentationAvailability();
+
+  bool Init(RefPtr<Promise>& aPromise);
+
+  void Shutdown();
+
+  void UpdateAvailabilityAndDispatchEvent(bool aIsAvailable);
+
+  bool mIsAvailable;
+
+  nsTArray<RefPtr<Promise>> mPromises;
+
+  nsTArray<nsString> mUrls;
+  nsTArray<bool> mAvailabilityOfUrl;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_PresentationAvailability_h