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/*
* Copyright (C) 2009 Apple 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "GeolocationController.h"
#if ENABLE(GEOLOCATION)
#include "GeolocationClient.h"
#include "GeolocationError.h"
#include "GeolocationPositionData.h"
namespace WebCore {
GeolocationController::GeolocationController(Page& page, GeolocationClient& client)
: m_page(page)
, m_client(client)
{
m_page.addActivityStateChangeObserver(*this);
}
GeolocationController::~GeolocationController()
{
ASSERT(m_observers.isEmpty());
// NOTE: We don't have to remove ourselves from page's ActivityStateChangeObserver set, since
// we are supplement of the Page, and our destructor getting called means the page is being
// torn down.
m_client.geolocationDestroyed();
}
void GeolocationController::didNavigatePage()
{
while (!m_observers.isEmpty())
removeObserver(m_observers.begin()->get());
}
void GeolocationController::addObserver(Geolocation& observer, bool enableHighAccuracy)
{
bool highAccuracyWasRequired = needsHighAccuracy();
m_observers.add(observer);
if (enableHighAccuracy)
m_highAccuracyObservers.add(observer);
if (m_isUpdating) {
if (!highAccuracyWasRequired && enableHighAccuracy)
m_client.setEnableHighAccuracy(true);
} else
startUpdatingIfNecessary();
}
void GeolocationController::removeObserver(Geolocation& observer)
{
if (!m_observers.contains(observer))
return;
bool highAccuracyWasRequired = needsHighAccuracy();
m_observers.remove(observer);
m_highAccuracyObservers.remove(observer);
if (!m_isUpdating)
return;
if (m_observers.isEmpty())
stopUpdatingIfNecessary();
else if (highAccuracyWasRequired && !needsHighAccuracy())
m_client.setEnableHighAccuracy(false);
}
void GeolocationController::revokeAuthorizationToken(const String& authorizationToken)
{
m_client.revokeAuthorizationToken(authorizationToken);
}
void GeolocationController::requestPermission(Geolocation& geolocation)
{
if (!m_page.isVisible()) {
m_pendingPermissionRequest.add(geolocation);
return;
}
m_client.requestPermission(geolocation);
}
void GeolocationController::cancelPermissionRequest(Geolocation& geolocation)
{
if (m_pendingPermissionRequest.remove(geolocation))
return;
m_client.cancelPermissionRequest(geolocation);
}
void GeolocationController::positionChanged(const std::optional<GeolocationPositionData>& position)
{
m_lastPosition = position;
for (auto& observer : copyToVectorOf<Ref<Geolocation>>(m_observers))
observer->positionChanged();
}
void GeolocationController::errorOccurred(GeolocationError& error)
{
for (auto& observer : copyToVectorOf<Ref<Geolocation>>(m_observers))
observer->setError(error);
}
std::optional<GeolocationPositionData> GeolocationController::lastPosition()
{
if (m_lastPosition)
return m_lastPosition.value();
return m_client.lastPosition();
}
void GeolocationController::activityStateDidChange(OptionSet<ActivityState::Flag> oldActivityState, OptionSet<ActivityState::Flag> newActivityState)
{
// Toggle GPS based on page visibility to save battery.
auto changed = oldActivityState ^ newActivityState;
if (changed & ActivityState::IsVisible && !m_observers.isEmpty()) {
if (newActivityState & ActivityState::IsVisible)
startUpdatingIfNecessary();
else
stopUpdatingIfNecessary();
}
if (!m_page.isVisible())
return;
auto pendedPermissionRequests = WTFMove(m_pendingPermissionRequest);
for (auto& permissionRequest : pendedPermissionRequests)
m_client.requestPermission(permissionRequest.get());
}
void GeolocationController::startUpdatingIfNecessary()
{
if (m_isUpdating || !m_page.isVisible() || m_observers.isEmpty())
return;
m_client.startUpdating((*m_observers.random())->authorizationToken(), needsHighAccuracy());
m_isUpdating = true;
}
void GeolocationController::stopUpdatingIfNecessary()
{
if (!m_isUpdating)
return;
m_client.stopUpdating();
m_isUpdating = false;
}
const char* GeolocationController::supplementName()
{
return "GeolocationController";
}
void provideGeolocationTo(Page* page, GeolocationClient& client)
{
ASSERT(page);
Supplement<Page>::provideTo(page, GeolocationController::supplementName(), makeUnique<GeolocationController>(*page, client));
}
} // namespace WebCore
#endif // ENABLE(GEOLOCATION)