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/*
* Copyright 2010, The Android Open Source Project
*
* 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 DeviceOrientationController_h
#define DeviceOrientationController_h
#include "DOMWindow.h"
#include "Page.h"
#include "Timer.h"
#include <wtf/HashCountedSet.h>
namespace WebCore {
class DeviceOrientationData;
class DeviceOrientationClient;
class DeviceOrientationController : public Supplement<Page> {
public:
~DeviceOrientationController();
static PassOwnPtr<DeviceOrientationController> create(DeviceOrientationClient*);
void addListener(DOMWindow*);
void removeListener(DOMWindow*);
void removeAllListeners(DOMWindow*);
void suspendEventsForAllListeners(DOMWindow*);
void resumeEventsForAllListeners(DOMWindow*);
void didChangeDeviceOrientation(DeviceOrientationData*);
bool isActive() { return !m_listeners.isEmpty(); }
DeviceOrientationClient* client() const { return m_client; }
static const AtomicString& supplementName();
static DeviceOrientationController* from(Page* page) { return static_cast<DeviceOrientationController*>(Supplement<Page>::from(page, supplementName())); }
static bool isActiveAt(Page*);
private:
explicit DeviceOrientationController(DeviceOrientationClient*);
void timerFired(Timer<DeviceOrientationController>*);
DeviceOrientationClient* m_client;
typedef HashCountedSet<RefPtr<DOMWindow> > ListenersCountedSet;
ListenersCountedSet m_listeners;
ListenersCountedSet m_suspendedListeners;
typedef HashSet<RefPtr<DOMWindow> > ListenersSet;
ListenersSet m_newListeners;
Timer<DeviceOrientationController> m_timer;
};
} // namespace WebCore
#endif // DeviceOrientationController_h
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