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#include "core/page/Page.h"
30#include "modules/geolocation/Geolocation.h"
31#include "wtf/HashSet.h"
32#include "wtf/Noncopyable.h"
33#include "wtf/RefPtr.h"
34
35namespace WebCore {
36
37class GeolocationClient;
38class GeolocationError;
39class GeolocationPosition;
40class Page;
41
42class GeolocationController : public Supplement<Page> {
43    WTF_MAKE_NONCOPYABLE(GeolocationController);
44public:
45    ~GeolocationController();
46
47    static PassOwnPtr<GeolocationController> create(Page*, GeolocationClient*);
48
49    void addObserver(Geolocation*, bool enableHighAccuracy);
50    void removeObserver(Geolocation*);
51
52    void requestPermission(Geolocation*);
53    void cancelPermissionRequest(Geolocation*);
54
55    void positionChanged(GeolocationPosition*);
56    void errorOccurred(GeolocationError*);
57
58    GeolocationPosition* lastPosition();
59
60    GeolocationClient* client() { return m_client; }
61
62    static const char* supplementName();
63    static GeolocationController* from(Page* page) { return static_cast<GeolocationController*>(Supplement<Page>::from(page, supplementName())); }
64
65private:
66    GeolocationController(Page*, GeolocationClient*);
67
68    GeolocationClient* m_client;
69    Page* m_page;
70
71    RefPtr<GeolocationPosition> m_lastPosition;
72    typedef HashSet<RefPtr<Geolocation> > ObserversSet;
73    // All observers; both those requesting high accuracy and those not.
74    ObserversSet m_observers;
75    ObserversSet m_highAccuracyObservers;
76};
77
78} // namespace WebCore
79
80#endif // GeolocationController_h
81