Upstream version 11.40.277.0
[platform/framework/web/crosswalk.git] / src / third_party / WebKit / Source / modules / geolocation / GeolocationController.h
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/frame/LocalFrame.h"
30 #include "core/page/PageLifecycleObserver.h"
31 #include "modules/geolocation/Geolocation.h"
32 #include "platform/heap/Handle.h"
33 #include "wtf/HashSet.h"
34 #include "wtf/Noncopyable.h"
35
36 namespace blink {
37
38 class GeolocationClient;
39 class GeolocationError;
40 class GeolocationPosition;
41
42 class GeolocationController final : public NoBaseWillBeGarbageCollectedFinalized<GeolocationController>, public WillBeHeapSupplement<LocalFrame>, public PageLifecycleObserver {
43     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(GeolocationController);
44     WTF_MAKE_NONCOPYABLE(GeolocationController);
45 public:
46     virtual ~GeolocationController();
47
48     static PassOwnPtrWillBeRawPtr<GeolocationController> create(LocalFrame&, GeolocationClient*);
49
50     void addObserver(Geolocation*, bool enableHighAccuracy);
51     void removeObserver(Geolocation*);
52
53     void requestPermission(Geolocation*);
54     void cancelPermissionRequest(Geolocation*);
55
56     void positionChanged(GeolocationPosition*);
57     void errorOccurred(GeolocationError*);
58
59     GeolocationPosition* lastPosition();
60
61     void setClientForTest(GeolocationClient*);
62     bool hasClientForTest() { return m_hasClientForTest; }
63     GeolocationClient* client() { return m_client; }
64
65     // Inherited from PageLifecycleObserver.
66     virtual void pageVisibilityChanged() override;
67
68     static const char* supplementName();
69     static GeolocationController* from(LocalFrame* frame) { return static_cast<GeolocationController*>(WillBeHeapSupplement<LocalFrame>::from(frame, supplementName())); }
70
71     // Inherited from Supplement.
72     virtual void trace(Visitor*) override;
73
74 private:
75     GeolocationController(LocalFrame&, GeolocationClient*);
76
77     void startUpdatingIfNeeded();
78     void stopUpdatingIfNeeded();
79
80     RawPtrWillBeMember<GeolocationClient> m_client;
81     bool m_hasClientForTest;
82
83     PersistentWillBeMember<GeolocationPosition> m_lastPosition;
84     typedef PersistentHeapHashSetWillBeHeapHashSet<Member<Geolocation> > ObserversSet;
85     // All observers; both those requesting high accuracy and those not.
86     ObserversSet m_observers;
87     ObserversSet m_highAccuracyObservers;
88     bool m_isClientUpdating;
89 };
90
91 } // namespace blink
92
93 #endif // GeolocationController_h