1 files changed, 104 insertions, 0 deletions
diff --git a/dom/base/EventSource.h b/dom/base/EventSource.h
new file mode 100644
index 0000000000..22c3f78a37
--- /dev/null
+++ b/dom/base/EventSource.h
@@ -0,0 +1,104 @@
+/* -*- 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