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#pragma once
27
28#if ENABLE(GEOLOCATION)
29
30#include "ActivityStateChangeObserver.h"
31#include "Geolocation.h"
32#include "Page.h"
33#include <wtf/HashSet.h>
34#include <wtf/Noncopyable.h>
35#include <wtf/RefPtr.h>
36
37namespace WebCore {
38
39class GeolocationClient;
40class GeolocationError;
41class GeolocationPosition;
42
43class GeolocationController : public Supplement<Page>, private ActivityStateChangeObserver {
44 WTF_MAKE_FAST_ALLOCATED;
45 WTF_MAKE_NONCOPYABLE(GeolocationController);
46public:
47 GeolocationController(Page&, GeolocationClient&);
48 ~GeolocationController();
49
50 void addObserver(Geolocation&, bool enableHighAccuracy);
51 void removeObserver(Geolocation&);
52
53 void requestPermission(Geolocation&);
54 void cancelPermissionRequest(Geolocation&);
55
56 WEBCORE_EXPORT void positionChanged(const Optional<GeolocationPosition>&);
57 WEBCORE_EXPORT void errorOccurred(GeolocationError&);
58
59 Optional<GeolocationPosition> lastPosition();
60
61 GeolocationClient& client() { return m_client; }
62
63 WEBCORE_EXPORT static const char* supplementName();
64 static GeolocationController* from(Page* page) { return static_cast<GeolocationController*>(Supplement<Page>::from(page, supplementName())); }
65
66private:
67 Page& m_page;
68 GeolocationClient& m_client;
69
70 void activityStateDidChange(OptionSet<ActivityState::Flag> oldActivityState, OptionSet<ActivityState::Flag> newActivityState) override;
71
72 Optional<GeolocationPosition> m_lastPosition;
73
74 typedef HashSet<Ref<Geolocation>> ObserversSet;
75 // All observers; both those requesting high accuracy and those not.
76 ObserversSet m_observers;
77 ObserversSet m_highAccuracyObservers;
78
79 // While the page is not visible, we pend permission requests.
80 HashSet<Ref<Geolocation>> m_pendingPermissionRequest;
81};
82
83} // namespace WebCore
84
85#endif // ENABLE(GEOLOCATION)
86