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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.
*/
#include "config.h"
#include "DeviceOrientationController.h"
#if ENABLE(DEVICE_ORIENTATION)
#include "DeviceOrientation.h"
#include "DeviceOrientationClient.h"
#include "DeviceOrientationEvent.h"
namespace WebCore {
DeviceOrientationController::DeviceOrientationController(Page* page, DeviceOrientationClient* client)
: m_page(page)
, m_client(client)
{
}
void DeviceOrientationController::addListener(DOMWindow* window)
{
// If no client is present, signal that no orientation data is available.
// If the client already has an orientation, call back to this new listener
// immediately.
if (!m_client) {
RefPtr<DeviceOrientation> emptyOrientation = DeviceOrientation::create();
window->dispatchEvent(DeviceOrientationEvent::create(eventNames().deviceorientationEvent, emptyOrientation.get()));
} else if (m_client && m_client->lastOrientation())
window->dispatchEvent(DeviceOrientationEvent::create(eventNames().deviceorientationEvent, m_client->lastOrientation()));
// The client may call back synchronously.
bool wasEmpty = m_listeners.isEmpty();
m_listeners.add(window);
if (wasEmpty && m_client)
m_client->startUpdating();
}
void DeviceOrientationController::removeListener(DOMWindow* window)
{
m_listeners.remove(window);
if (m_listeners.isEmpty() && m_client)
m_client->stopUpdating();
}
void DeviceOrientationController::removeAllListeners(DOMWindow* window)
{
// May be called with a DOMWindow that's not a listener.
if (!m_listeners.contains(window))
return;
m_listeners.removeAll(window);
if (m_listeners.isEmpty() && m_client)
m_client->stopUpdating();
}
void DeviceOrientationController::didChangeDeviceOrientation(DeviceOrientation* orientation)
{
RefPtr<DeviceOrientationEvent> event = DeviceOrientationEvent::create(eventNames().deviceorientationEvent, orientation);
Vector<DOMWindow*> listenersVector;
copyToVector(m_listeners, listenersVector);
for (size_t i = 0; i < listenersVector.size(); ++i)
listenersVector[i]->dispatchEvent(event);
}
} // namespace WebCore
#endif // ENABLE(DEVICE_ORIENTATION)
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