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/*
* Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved.
* 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:
* 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. ``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
* 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 Geolocation_h
#define Geolocation_h
#include "GeolocationPositionCache.h"
#include "Geoposition.h"
#include "PositionCallback.h"
#include "PositionError.h"
#include "PositionErrorCallback.h"
#include "PositionOptions.h"
#include "Timer.h"
#if !ENABLE(CLIENT_BASED_GEOLOCATION)
#include "GeolocationService.h"
#endif
namespace WebCore {
class Frame;
#if ENABLE(CLIENT_BASED_GEOLOCATION)
class GeolocationPosition;
class GeolocationError;
#endif
class Geolocation : public RefCounted<Geolocation>
#if !ENABLE(CLIENT_BASED_GEOLOCATION) && ENABLE(GEOLOCATION)
, public GeolocationServiceClient
#endif
{
public:
static PassRefPtr<Geolocation> create(Frame* frame) { return adoptRef(new Geolocation(frame)); }
~Geolocation();
void reset();
void disconnectFrame();
void getCurrentPosition(PassRefPtr<PositionCallback>, PassRefPtr<PositionErrorCallback>, PassRefPtr<PositionOptions>);
int watchPosition(PassRefPtr<PositionCallback>, PassRefPtr<PositionErrorCallback>, PassRefPtr<PositionOptions>);
void clearWatch(int watchId);
// These methods are used by Android.
void suspend();
void resume();
void setIsAllowed(bool);
Frame* frame() const { return m_frame; }
#if ENABLE(CLIENT_BASED_GEOLOCATION)
void positionChanged();
void setError(GeolocationError*);
#else
GeolocationService* getGeolocationService() const { return m_service.get(); }
#endif
private:
Geoposition* lastPosition();
bool isAllowed() const { return m_allowGeolocation == Yes; }
bool isDenied() const { return m_allowGeolocation == No; }
Geolocation(Frame*);
Page* page() const;
class GeoNotifier : public RefCounted<GeoNotifier> {
public:
static PassRefPtr<GeoNotifier> create(Geolocation* geolocation, PassRefPtr<PositionCallback> positionCallback, PassRefPtr<PositionErrorCallback> positionErrorCallback, PassRefPtr<PositionOptions> options) { return adoptRef(new GeoNotifier(geolocation, positionCallback, positionErrorCallback, options)); }
void setFatalError(PassRefPtr<PositionError>);
bool hasZeroTimeout() const;
void setUseCachedPosition();
void runSuccessCallback(Geoposition*);
void startTimerIfNeeded();
void timerFired(Timer<GeoNotifier>*);
Geolocation* m_geolocation;
RefPtr<PositionCallback> m_successCallback;
RefPtr<PositionErrorCallback> m_errorCallback;
RefPtr<PositionOptions> m_options;
Timer<GeoNotifier> m_timer;
RefPtr<PositionError> m_fatalError;
bool m_useCachedPosition;
private:
GeoNotifier(Geolocation*, PassRefPtr<PositionCallback>, PassRefPtr<PositionErrorCallback>, PassRefPtr<PositionOptions>);
};
typedef Vector<RefPtr<GeoNotifier> > GeoNotifierVector;
typedef HashSet<RefPtr<GeoNotifier> > GeoNotifierSet;
class Watchers {
public:
void set(int id, PassRefPtr<GeoNotifier>);
void remove(int id);
void remove(GeoNotifier*);
bool contains(GeoNotifier*) const;
void clear();
bool isEmpty() const;
void getNotifiersVector(GeoNotifierVector&) const;
private:
typedef HashMap<int, RefPtr<GeoNotifier> > IdToNotifierMap;
typedef HashMap<RefPtr<GeoNotifier>, int> NotifierToIdMap;
IdToNotifierMap m_idToNotifierMap;
NotifierToIdMap m_notifierToIdMap;
};
class PositionCacheWrapper {
public:
PositionCacheWrapper()
: m_cache(GeolocationPositionCache::instance())
{
m_cache->addUser();
}
~PositionCacheWrapper()
{
m_cache->removeUser();
}
void setCachedPosition(Geoposition* cachedPosition) { m_cache->setCachedPosition(cachedPosition); }
Geoposition* cachedPosition() { return m_cache->cachedPosition(); }
private:
GeolocationPositionCache* m_cache;
};
bool hasListeners() const { return !m_oneShots.isEmpty() || !m_watchers.isEmpty(); }
void sendError(GeoNotifierVector&, PositionError*);
void sendPosition(GeoNotifierVector&, Geoposition*);
static void extractNotifiersWithCachedPosition(GeoNotifierVector& notifiers, GeoNotifierVector* cached);
static void copyToSet(const GeoNotifierVector&, GeoNotifierSet&);
static void stopTimer(GeoNotifierVector&);
void stopTimersForOneShots();
void stopTimersForWatchers();
void stopTimers();
void cancelRequests(GeoNotifierVector&);
void cancelAllRequests();
void positionChangedInternal();
void makeSuccessCallbacks();
void handleError(PositionError*);
void requestPermission();
bool startUpdating(GeoNotifier*);
void stopUpdating();
#if USE(PREEMPT_GEOLOCATION_PERMISSION)
void handlePendingPermissionNotifiers();
#endif
#if !ENABLE(CLIENT_BASED_GEOLOCATION) && ENABLE(GEOLOCATION)
// GeolocationServiceClient
virtual void geolocationServicePositionChanged(GeolocationService*);
virtual void geolocationServiceErrorOccurred(GeolocationService*);
#endif
PassRefPtr<GeoNotifier> startRequest(PassRefPtr<PositionCallback>, PassRefPtr<PositionErrorCallback>, PassRefPtr<PositionOptions>);
void fatalErrorOccurred(GeoNotifier*);
void requestTimedOut(GeoNotifier*);
void requestUsesCachedPosition(GeoNotifier*);
bool haveSuitableCachedPosition(PositionOptions*);
void makeCachedPositionCallbacks();
GeoNotifierSet m_oneShots;
Watchers m_watchers;
Frame* m_frame;
#if !ENABLE(CLIENT_BASED_GEOLOCATION)
OwnPtr<GeolocationService> m_service;
#endif
#if USE(PREEMPT_GEOLOCATION_PERMISSION)
GeoNotifierSet m_pendingForPermissionNotifiers;
#endif
RefPtr<Geoposition> m_lastPosition;
enum {
Unknown,
InProgress,
Yes,
No
} m_allowGeolocation;
#if ENABLE(GEOLOCATION)
PositionCacheWrapper m_positionCache;
#endif
GeoNotifierSet m_requestsAwaitingCachedPosition;
};
} // namespace WebCore
#endif // Geolocation_h
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