Implement DeviceLight

Source/modules/devicelight/DeviceLightDispatcher.h

 /*
- * Copyright (C) 2010 Google Inc. All rights reserved.
+ * Copyright (C) 2014 Intel 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:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * 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 THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER 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 SpeechInputResultList_h
-#define SpeechInputResultList_h
+#ifndef DeviceLightDispatcher_h
+#define DeviceLightDispatcher_h
 
-#if ENABLE(INPUT_SPEECH)
-
-#include "bindings/v8/ScriptWrappable.h"
-#include "core/speech/SpeechInputResult.h"
-#include "heap/Handle.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
+// TODO(riju) make DeviceSensorEventDispatcher.h common to all Device Apis
+//  by extracting it out of device_orientation
+#include "modules/device_orientation/DeviceSensorEventDispatcher.h"

[abarth-chromium, 2014/03/04 18:59:32]

Yeah, we'll need to do that before landing this CL to avoid introducing
cross-module dependencies.

[riju_, 2014/03/05 15:47:27]

Yes. I will do this in a separate CL to avoid confusion.

+#include "public/platform/WebDeviceLightListener.h"
+#include "wtf/RefPtr.h"
 
 namespace WebCore {
 
-class SpeechInputResultList : public RefCountedWillBeGarbageCollectedFinalized<SpeechInputResultList>, public ScriptWrappable {
+class DeviceLightController;
+
+// This class listens to device light data and dispatches it to all
+// listening controllers
+class DeviceLightDispatcher : public DeviceSensorEventDispatcher, public blink::WebDeviceLightListener {
 public:
-    static PassRefPtrWillBeRawPtr<SpeechInputResultList> create(const SpeechInputResultArray& results);
+    static DeviceLightDispatcher& instance();
 
-    // Methods from the IDL.
-    size_t length() { return m_results.size(); }
-    SpeechInputResult* item(unsigned index);
+    double latestDeviceLightData();
 
-    void trace(Visitor *);
+    // This method is called every time new device light data is available.
+    virtual void didChangeDeviceLight(const double&) OVERRIDE;
+    void addDeviceLightController(DeviceLightController*);
+    void removeDeviceLightController(DeviceLightController*);
 
 private:
-    explicit SpeechInputResultList(const SpeechInputResultArray& results);
+    DeviceLightDispatcher();
+    ~DeviceLightDispatcher();
 
-    SpeechInputResultArray m_results;
+    virtual void startListening() OVERRIDE;
+    virtual void stopListening() OVERRIDE;
+
+    double m_lastDeviceLightData;
 };
 
 } // namespace WebCore
 
-#endif // ENABLE(INPUT_SPEECH)
-
-#endif // SpeechInputResultList_h
+#endif // DeviceLightDispatcher_h