dom/presentation/PresentationAvailability.h
author David Major <dmajor@mozilla.com>
Wed, 20 Dec 2017 09:07:46 -0500
changeset 448763 e9cfe039a796e2963a6d3e7d2a161b02cdbadcac
parent 439273 cb123c84818a3c491fb9d63f00891d23f515cf6f
child 505383 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1425906: Rename LINK to LINKER throughout the build system. r=glandium Windows linkers give special meaning to getenv("LINK"), which makes `export LINK=...` in mozconfigs do unexpected things.

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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