gecko-dev/dom/serviceworkers/ServiceWorker.h

108 lines
3.0 KiB
C++

/* -*- 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_serviceworker_h__
#define mozilla_dom_serviceworker_h__
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/ServiceWorkerDescriptor.h"
#ifdef XP_WIN
#undef PostMessage
#endif
class nsIGlobalObject;
namespace mozilla {
namespace dom {
bool
ServiceWorkerVisible(JSContext* aCx, JSObject* aObj);
class ServiceWorker final : public DOMEventTargetHelper
{
public:
// Abstract interface for the internal representation of the
// ServiceWorker object.
class Inner
{
public:
// This will be called when a DOM ServiceWorker object is
// created and takes a strong ref to the Inner object.
// RemoveServiceWorker() is guaranteed to be called on the
// current thread before the ServiceWorker is destroyed.
//
// In addition, the Inner object should check to see if
// the ServiceWorker's state is correct. If not, it should
// be updated automatically by calling SetState(). This is
// necessary to handle race conditions where the DOM
// ServiceWorker object is created while the state is being
// updated in another process.
virtual void
AddServiceWorker(ServiceWorker* aWorker) = 0;
// This is called when the DOM ServiceWorker object is
// destroyed and drops its ref to the Inner object.
virtual void
RemoveServiceWorker(ServiceWorker* aWorker) = 0;
virtual void
PostMessage(nsIGlobalObject* aGlobal,
JSContext* aCx, JS::Handle<JS::Value> aMessage,
const Sequence<JSObject*>& aTransferable,
ErrorResult& aRv) = 0;
NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
};
NS_DECL_ISUPPORTS_INHERITED
IMPL_EVENT_HANDLER(statechange)
IMPL_EVENT_HANDLER(error)
static already_AddRefed<ServiceWorker>
Create(nsIGlobalObject* aOwner, const ServiceWorkerDescriptor& aDescriptor);
virtual JSObject*
WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
ServiceWorkerState
State() const;
void
SetState(ServiceWorkerState aState);
void
GetScriptURL(nsString& aURL) const;
void
PostMessage(JSContext* aCx, JS::Handle<JS::Value> aMessage,
const Sequence<JSObject*>& aTransferable, ErrorResult& aRv);
bool
MatchesDescriptor(const ServiceWorkerDescriptor& aDescriptor) const;
void
DisconnectFromOwner() override;
private:
ServiceWorker(nsIGlobalObject* aWindow,
const ServiceWorkerDescriptor& aDescriptor,
Inner* aInner);
// This class is reference-counted and will be destroyed from Release().
~ServiceWorker();
ServiceWorkerDescriptor mDescriptor;
const RefPtr<Inner> mInner;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_serviceworker_h__