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_FAST_ALLOCATED;
47 WTF_MAKE_NONCOPYABLE(GeolocationController);
48public:
49 GeolocationController(Page&, GeolocationClient&);
50 ~GeolocationController();
51
52 void addObserver(Geolocation*, bool enableHighAccuracy);
53 void removeObserver(Geolocation*);
54
55 void requestPermission(Geolocation*);
56 void cancelPermissionRequest(Geolocation*);
57
58 WEBCORE_EXPORT void positionChanged(GeolocationPosition*);
59 WEBCORE_EXPORT void errorOccurred(GeolocationError*);
60
61 GeolocationPosition* lastPosition();
62
63 GeolocationClient& client() { return m_client; }
64
65 WEBCORE_EXPORT static const char* supplementName();
66 static GeolocationController* from(Page* page) { return static_cast<GeolocationController*>(Supplement<Page>::from(page, supplementName())); }
67
68private:
69 Page& m_page;
70 GeolocationClient& m_client;
71
72 virtual void viewStateDidChange(ViewState::Flags oldViewState, ViewState::Flags newViewState) override;
73
74 RefPtr<GeolocationPosition> m_lastPosition;
75
76 typedef HashSet<RefPtr<Geolocation>> ObserversSet;
77 // All observers; both those requesting high accuracy and those not.
78 ObserversSet m_observers;
79 ObserversSet m_highAccuracyObservers;
80
81 // While the page is not visible, we pend permission requests.
82 HashSet<RefPtr<Geolocation>> m_pendedPermissionRequest;
83};
84
85} // namespace WebCore
86
87#endif // ENABLE(GEOLOCATION)
88
89#endif // GeolocationController_h
90