MediaStream API: Changing the device enumeration to be async

Source/modules/mediastream/MediaStreamTrackSourcesRequest.h

+/*
+ * Copyright (C) 2013 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef MediaStreamTrackSourcesRequest_h
+#define MediaStreamTrackSourcesRequest_h
+
+#include "core/platform/Timer.h"
+#include "modules/mediastream/SourceInfo.h"
+#include "public/platform/WebVector.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
+#include "wtf/RefPtr.h"
+#include "wtf/text/WTFString.h"
+
+namespace WebKit {
+class WebSourceInfo;
+}
+
+namespace WebCore {
+
+class MediaStreamTrackSourcesCallback;
+class ScriptExecutionContext;
+
+class MediaStreamTrackSourcesRequest : public RefCounted<MediaStreamTrackSourcesRequest> {
+public:
+    class ExtraData : public RefCounted<ExtraData> {
+    public:
+        virtual ~ExtraData() { }
+    };
+
+    static PassRefPtr<MediaStreamTrackSourcesRequest> create(ScriptExecutionContext*, PassRefPtr<MediaStreamTrackSourcesCallback>);
+    virtual ~MediaStreamTrackSourcesRequest();
+
+    String origin() { return m_origin; }
+
+    void requestSucceeded(const WebKit::WebVector<WebKit::WebSourceInfo>&);
+
+    PassRefPtr<ExtraData> extraData() const { return m_extraData; }
+    void setExtraData(PassRefPtr<ExtraData> extraData) { m_extraData = extraData; }
+
+private:
+    MediaStreamTrackSourcesRequest(ScriptExecutionContext*, PassRefPtr<MediaStreamTrackSourcesCallback>);
+
+    void scheduledEventTimerFired(Timer<MediaStreamTrackSourcesRequest>*);
+
+    RefPtr<MediaStreamTrackSourcesCallback> m_callback;
+    RefPtr<ExtraData> m_extraData;
+    String m_origin;
+    Timer<MediaStreamTrackSourcesRequest> m_scheduledEventTimer;
+    SourceInfoVector m_sourceInfos;
+    RefPtr<MediaStreamTrackSourcesRequest> m_protect;
+};
+
+} // namespace WebCore
+
+#endif // MediaStreamTrackSourcesRequest_h