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-rw-r--r--dom/base/EventSource.h104
1 files changed, 104 insertions, 0 deletions
diff --git a/dom/base/EventSource.h b/dom/base/EventSource.h
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+/* -*- 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/. */
+
+/*
+ * This implementation has support only for http requests. It is because the
+ * spec has defined event streams only for http. HTTP is required because
+ * this implementation uses some http headers: "Last-Event-ID", "Cache-Control"
+ * and "Accept".
+ */
+
+#ifndef mozilla_dom_EventSource_h
+#define mozilla_dom_EventSource_h
+
+#include "mozilla/Atomics.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/DOMEventTargetHelper.h"
+#include "nsDeque.h"
+#include "nsICookieJarSettings.h"
+
+class nsIGlobalObject;
+
+namespace mozilla {
+
+class ErrorResult;
+
+namespace dom {
+
+struct EventSourceInit;
+
+class EventSourceImpl;
+
+class EventSource final : public DOMEventTargetHelper {
+ friend class EventSourceImpl;
+
+ public:
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(EventSource, DOMEventTargetHelper)
+ virtual bool IsCertainlyAliveForCC() const override;
+
+ // EventTarget
+ void DisconnectFromOwner() override {
+ DOMEventTargetHelper::DisconnectFromOwner();
+ Close();
+ }
+
+ JSObject* WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) override;
+
+ // WebIDL
+ static already_AddRefed<EventSource> Constructor(
+ const GlobalObject& aGlobal, const nsAString& aURL,
+ const EventSourceInit& aEventSourceInitDict, ErrorResult& aRv);
+
+ void GetUrl(nsAString& aURL) const {
+ AssertIsOnTargetThread();
+ aURL = mOriginalURL;
+ }
+
+ bool WithCredentials() const {
+ AssertIsOnTargetThread();
+ return mWithCredentials;
+ }
+
+ uint16_t ReadyState() const {
+ AssertIsOnTargetThread();
+ return mReadyState;
+ }
+
+ IMPL_EVENT_HANDLER(open)
+ IMPL_EVENT_HANDLER(message)
+ IMPL_EVENT_HANDLER(error)
+
+ void Close();
+
+ private:
+ EventSource(nsIGlobalObject* aGlobal,
+ nsICookieJarSettings* aCookieJarSettings, bool aWithCredentials);
+ virtual ~EventSource();
+ // prevent bad usage
+ EventSource(const EventSource& x) = delete;
+ EventSource& operator=(const EventSource& x) = delete;
+
+ void AssertIsOnTargetThread() const {
+ MOZ_ASSERT(NS_IsMainThread() == mIsMainThread);
+ }
+
+ nsresult CreateAndDispatchSimpleEvent(const nsAString& aName);
+
+ // This EventSourceImpl is created, managed and destroyed
+ // by EventSource.
+ RefPtr<EventSourceImpl> mESImpl;
+ nsString mOriginalURL;
+ Atomic<uint32_t> mReadyState;
+ const bool mWithCredentials;
+ const bool mIsMainThread;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_EventSource_h