зеркало из https://github.com/mozilla/gecko-dev.git
110 строки
3.6 KiB
C++
110 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* PushManager and PushSubscription are exposed on the main and worker threads.
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* The main thread version is implemented in Push.js. The JS implementation
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* makes it easier to use certain APIs like the permission prompt and Promises.
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*
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* Unfortunately, JS-implemented WebIDL is not supported off the main thread.
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* To work around this, we use a chain of runnables to query the JS-implemented
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* nsIPushService component for subscription information, and return the
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* results to the worker. We don't have to deal with permission prompts, since
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* we just reject calls if the principal does not have permission.
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*
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* On the main thread, PushManager wraps a JS-implemented PushManagerImpl
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* instance. The C++ wrapper is necessary because our bindings code cannot
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* accomodate "JS-implemented on the main thread, C++ on the worker" bindings.
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*
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* PushSubscription is in C++ on both threads since it isn't particularly
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* verbose to implement in C++ compared to JS.
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*/
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#ifndef mozilla_dom_PushManager_h
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#define mozilla_dom_PushManager_h
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#include "nsWrapperCache.h"
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#include "mozilla/AlreadyAddRefed.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/dom/TypedArray.h"
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#include "nsCOMPtr.h"
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#include "mozilla/RefPtr.h"
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class nsIGlobalObject;
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class nsIPrincipal;
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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class OwningArrayBufferViewOrArrayBufferOrString;
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class Promise;
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class PushManagerImpl;
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struct PushSubscriptionOptionsInit;
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class WorkerPrivate;
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class PushManager final : public nsISupports, public nsWrapperCache {
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(PushManager)
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enum SubscriptionAction {
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SubscribeAction,
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GetSubscriptionAction,
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};
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// The main thread constructor.
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PushManager(nsIGlobalObject* aGlobal, PushManagerImpl* aImpl);
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// The worker thread constructor.
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explicit PushManager(const nsAString& aScope);
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nsIGlobalObject* GetParentObject() const { return mGlobal; }
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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static already_AddRefed<PushManager> Constructor(GlobalObject& aGlobal,
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const nsAString& aScope,
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ErrorResult& aRv);
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already_AddRefed<Promise> PerformSubscriptionActionFromWorker(
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SubscriptionAction aAction, ErrorResult& aRv);
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already_AddRefed<Promise> PerformSubscriptionActionFromWorker(
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SubscriptionAction aAction, const PushSubscriptionOptionsInit& aOptions,
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ErrorResult& aRv);
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already_AddRefed<Promise> Subscribe(
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const PushSubscriptionOptionsInit& aOptions, ErrorResult& aRv);
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already_AddRefed<Promise> GetSubscription(ErrorResult& aRv);
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already_AddRefed<Promise> PermissionState(
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const PushSubscriptionOptionsInit& aOptions, ErrorResult& aRv);
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private:
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~PushManager();
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nsresult NormalizeAppServerKey(
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const OwningArrayBufferViewOrArrayBufferOrString& aSource,
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nsTArray<uint8_t>& aAppServerKey);
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// The following are only set and accessed on the main thread.
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nsCOMPtr<nsIGlobalObject> mGlobal;
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RefPtr<PushManagerImpl> mImpl;
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// Only used on the worker thread.
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nsString mScope;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_PushManager_h
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