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/*
* 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:
*
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 DeviceOrientationDispatcher_h
#define DeviceOrientationDispatcher_h
#include "core/frame/PlatformEventDispatcher.h"
#include "platform/heap/Handle.h"
#include "public/platform/WebPlatformEventType.h"
#include "public/platform/modules/device_orientation/WebDeviceOrientationListener.h"
#include "wtf/RefPtr.h"
namespace blink {
class DeviceOrientationData;
class WebDeviceOrientationData;
// This class listens to device orientation data and notifies all registered
// controllers.
class DeviceOrientationDispatcher final
: public GarbageCollectedFinalized<DeviceOrientationDispatcher>,
public PlatformEventDispatcher,
public WebDeviceOrientationListener {
USING_GARBAGE_COLLECTED_MIXIN(DeviceOrientationDispatcher);
public:
static DeviceOrientationDispatcher& instance(bool absolute);
~DeviceOrientationDispatcher() override;
// Note that the returned object is owned by this class.
// FIXME: make the return value const, see crbug.com/233174.
DeviceOrientationData* latestDeviceOrientationData();
// Inherited from WebDeviceOrientationListener.
void didChangeDeviceOrientation(const WebDeviceOrientationData&) override;
DECLARE_VIRTUAL_TRACE();
private:
explicit DeviceOrientationDispatcher(bool absolute);
// Inherited from PlatformEventDispatcher.
void startListening() override;
void stopListening() override;
WebPlatformEventType getWebPlatformEventType() const;
const bool m_absolute;
Member<DeviceOrientationData> m_lastDeviceOrientationData;
};
} // namespace blink
#endif // DeviceOrientationDispatcher_h
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