1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4  * License, v. 2.0. If a copy of the MPL was not distributed with this
5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 
7 #include "nsCOMPtr.h"
8 #include "nsIGeolocationProvider.h"
9 #include "mozilla/Attributes.h"
10 
11 /*
12  * The CoreLocationObjects class contains the CoreLocation objects
13  * we'll need.
14  *
15  * Declaring them directly in CoreLocationLocationProvider
16  * would require Objective-C++ syntax, which would contaminate all
17  * files that include this header and require them to be Objective-C++
18  * as well.
19  *
20  * The solution then is to forward-declare CoreLocationObjects here and
21  * hold a pointer to it in CoreLocationLocationProvider, and only actually
22  * define it in CoreLocationLocationProvider.mm, thus making it safe
23  * for Geolocation.cpp, which is C++-only, to include this header.
24  */
25 class CoreLocationObjects;
26 class MLSFallback;
27 
28 class CoreLocationLocationProvider : public nsIGeolocationProvider {
29  public:
30   NS_DECL_ISUPPORTS
31   NS_DECL_NSIGEOLOCATIONPROVIDER
32 
33   CoreLocationLocationProvider();
34   // MOZ_CAN_RUN_SCRIPT_BOUNDARY because we can't mark Objective-C methods as
35   // MOZ_CAN_RUN_SCRIPT as far as I can tell, and this method is called from
36   // Objective-C.
37   MOZ_CAN_RUN_SCRIPT_BOUNDARY
38   void NotifyError(uint16_t aErrorCode);
39   void Update(nsIDOMGeoPosition* aSomewhere);
40   void CreateMLSFallbackProvider();
41   void CancelMLSFallbackProvider();
42 
43  private:
44   virtual ~CoreLocationLocationProvider() = default;
45 
46   CoreLocationObjects* mCLObjects;
47   nsCOMPtr<nsIGeolocationUpdate> mCallback;
48   RefPtr<MLSFallback> mMLSFallbackProvider;
49 
50   class MLSUpdate : public nsIGeolocationUpdate {
51    public:
52     NS_DECL_ISUPPORTS
53     NS_DECL_NSIGEOLOCATIONUPDATE
54 
55     explicit MLSUpdate(CoreLocationLocationProvider& parentProvider);
56 
57    private:
58     CoreLocationLocationProvider& mParentLocationProvider;
59     virtual ~MLSUpdate() = default;
60   };
61 };
62