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/*
* Copyright (C) 2008, 2009, 2010, 2011 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
#if ENABLE(GEOLOCATION)
#include "ActiveDOMObject.h"
#include "Geoposition.h"
#include "PositionCallback.h"
#include "PositionError.h"
#include "PositionErrorCallback.h"
#include "PositionOptions.h"
#include "ScriptWrappable.h"
#include "Timer.h"
namespace WebCore {
class Document;
class Frame;
class GeolocationController;
class GeolocationError;
class GeolocationPosition;
class Page;
class ScriptExecutionContext;
class Geolocation : public ScriptWrappable, public RefCounted<Geolocation>, public ActiveDOMObject
{
public:
static PassRefPtr<Geolocation> create(ScriptExecutionContext*);
~Geolocation();
virtual void stop() OVERRIDE;
Document* document() const;
Frame* frame() const;
void getCurrentPosition(PassRefPtr<PositionCallback>, PassRefPtr<PositionErrorCallback>, PassRefPtr<PositionOptions>);
int watchPosition(PassRefPtr<PositionCallback>, PassRefPtr<PositionErrorCallback>, PassRefPtr<PositionOptions>);
void clearWatch(int watchID);
void setIsAllowed(bool);
bool isAllowed() const { return m_allowGeolocation == Yes; }
void positionChanged();
void setError(GeolocationError*);
private:
Geoposition* lastPosition();
bool isDenied() const { return m_allowGeolocation == No; }
explicit Geolocation(ScriptExecutionContext*);
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)); }
PositionOptions* options() const { return m_options.get(); };
void setFatalError(PassRefPtr<PositionError>);
bool useCachedPosition() const { return m_useCachedPosition; }
void setUseCachedPosition();
void runSuccessCallback(Geoposition*);
void runErrorCallback(PositionError*);
void startTimerIfNeeded();
void stopTimer();
void timerFired(Timer<GeoNotifier>*);
bool hasZeroTimeout() const;
private:
GeoNotifier(Geolocation*, PassRefPtr<PositionCallback>, PassRefPtr<PositionErrorCallback>, PassRefPtr<PositionOptions>);
RefPtr<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;
};
typedef Vector<RefPtr<GeoNotifier> > GeoNotifierVector;
typedef HashSet<RefPtr<GeoNotifier> > GeoNotifierSet;
class Watchers {
public:
bool add(int id, PassRefPtr<GeoNotifier>);
GeoNotifier* find(int id);
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;
};
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 makeSuccessCallbacks();
void handleError(PositionError*);
void requestPermission();
bool startUpdating(GeoNotifier*);
void stopUpdating();
void handlePendingPermissionNotifiers();
void startRequest(GeoNotifier*);
void fatalErrorOccurred(GeoNotifier*);
void requestTimedOut(GeoNotifier*);
void requestUsesCachedPosition(GeoNotifier*);
bool haveSuitableCachedPosition(PositionOptions*);
void makeCachedPositionCallbacks();
GeoNotifierSet m_oneShots;
Watchers m_watchers;
GeoNotifierSet m_pendingForPermissionNotifiers;
RefPtr<Geoposition> m_lastPosition;
enum {
Unknown,
InProgress,
Yes,
No
} m_allowGeolocation;
GeoNotifierSet m_requestsAwaitingCachedPosition;
};
} // namespace WebCore
#endif // ENABLE(GEOLOCATION)
#endif // Geolocation_h
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