1/* 2 * Copyright (C) 2009 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef GeolocationController_h 27#define GeolocationController_h 28 29#if ENABLE(GEOLOCATION) 30 31#include "Geolocation.h" 32#include "Page.h" 33#include "ViewStateChangeObserver.h" 34#include <wtf/HashSet.h> 35#include <wtf/Noncopyable.h> 36#include <wtf/RefPtr.h> 37 38namespace WebCore { 39 40class GeolocationClient; 41class GeolocationError; 42class GeolocationPosition; 43class Page; 44 45class GeolocationController : public Supplement<Page>, private ViewStateChangeObserver { 46 WTF_MAKE_NONCOPYABLE(GeolocationController); 47public: 48 explicit GeolocationController(Page&, GeolocationClient*); 49 ~GeolocationController(); 50 51 void addObserver(Geolocation*, bool enableHighAccuracy); 52 void removeObserver(Geolocation*); 53 54 void requestPermission(Geolocation*); 55 void cancelPermissionRequest(Geolocation*); 56 57 void positionChanged(GeolocationPosition*); 58 void errorOccurred(GeolocationError*); 59 60 GeolocationPosition* lastPosition(); 61 62 GeolocationClient* client() { return m_client; } 63 64 static const char* supplementName(); 65 static GeolocationController* from(Page* page) { return static_cast<GeolocationController*>(Supplement<Page>::from(page, supplementName())); } 66 67private: 68 Page& m_page; 69 GeolocationClient* m_client; 70 71 virtual void viewStateDidChange(ViewState::Flags oldViewState, ViewState::Flags newViewState) override; 72 73 RefPtr<GeolocationPosition> m_lastPosition; 74 75 typedef HashSet<RefPtr<Geolocation>> ObserversSet; 76 // All observers; both those requesting high accuracy and those not. 77 ObserversSet m_observers; 78 ObserversSet m_highAccuracyObservers; 79 80 // While the page is not visible, we pend permission requests. 81 HashSet<RefPtr<Geolocation>> m_pendedPermissionRequest; 82}; 83 84} // namespace WebCore 85 86#endif // ENABLE(GEOLOCATION) 87 88#endif // GeolocationController_h 89