/src/mozilla-central/dom/geolocation/MLSFallback.cpp
Line | Count | Source (jump to first uncovered line) |
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 "MLSFallback.h" |
8 | | #include "nsGeoPosition.h" |
9 | | #include "nsIGeolocationProvider.h" |
10 | | #include "nsServiceManagerUtils.h" |
11 | | |
12 | | NS_IMPL_ISUPPORTS(MLSFallback, nsITimerCallback, nsINamed) |
13 | | |
14 | | MLSFallback::MLSFallback(uint32_t delay) |
15 | | : mDelayMs(delay) |
16 | 0 | { |
17 | 0 | } |
18 | | |
19 | | MLSFallback::~MLSFallback() |
20 | 0 | { |
21 | 0 | } |
22 | | |
23 | | nsresult |
24 | | MLSFallback::Startup(nsIGeolocationUpdate* aWatcher) |
25 | 0 | { |
26 | 0 | if (mHandoffTimer || mMLSFallbackProvider) { |
27 | 0 | return NS_OK; |
28 | 0 | } |
29 | 0 | |
30 | 0 | mUpdateWatcher = aWatcher; |
31 | 0 |
|
32 | 0 | // No need to schedule a timer callback if there is no startup delay. |
33 | 0 | if (mDelayMs == 0) { |
34 | 0 | return CreateMLSFallbackProvider(); |
35 | 0 | } |
36 | 0 | |
37 | 0 | return NS_NewTimerWithCallback(getter_AddRefs(mHandoffTimer), |
38 | 0 | this, mDelayMs, nsITimer::TYPE_ONE_SHOT); |
39 | 0 | } |
40 | | |
41 | | nsresult |
42 | | MLSFallback::Shutdown() |
43 | 0 | { |
44 | 0 | mUpdateWatcher = nullptr; |
45 | 0 |
|
46 | 0 | if (mHandoffTimer) { |
47 | 0 | mHandoffTimer->Cancel(); |
48 | 0 | mHandoffTimer = nullptr; |
49 | 0 | } |
50 | 0 |
|
51 | 0 | nsresult rv = NS_OK; |
52 | 0 | if (mMLSFallbackProvider) { |
53 | 0 | rv = mMLSFallbackProvider->Shutdown(); |
54 | 0 | mMLSFallbackProvider = nullptr; |
55 | 0 | } |
56 | 0 | return rv; |
57 | 0 | } |
58 | | |
59 | | NS_IMETHODIMP |
60 | | MLSFallback::Notify(nsITimer* aTimer) |
61 | 0 | { |
62 | 0 | return CreateMLSFallbackProvider(); |
63 | 0 | } |
64 | | |
65 | | NS_IMETHODIMP |
66 | | MLSFallback::GetName(nsACString& aName) |
67 | 0 | { |
68 | 0 | aName.AssignLiteral("MLSFallback"); |
69 | 0 | return NS_OK; |
70 | 0 | } |
71 | | |
72 | | nsresult |
73 | | MLSFallback::CreateMLSFallbackProvider() |
74 | 0 | { |
75 | 0 | if (mMLSFallbackProvider || !mUpdateWatcher) { |
76 | 0 | return NS_OK; |
77 | 0 | } |
78 | 0 | |
79 | 0 | nsresult rv; |
80 | 0 | mMLSFallbackProvider = do_CreateInstance("@mozilla.org/geolocation/mls-provider;1", &rv); |
81 | 0 | NS_ENSURE_SUCCESS(rv, rv); |
82 | 0 |
|
83 | 0 | if (mMLSFallbackProvider) { |
84 | 0 | rv = mMLSFallbackProvider->Startup(); |
85 | 0 | if (NS_SUCCEEDED(rv)) { |
86 | 0 | mMLSFallbackProvider->Watch(mUpdateWatcher); |
87 | 0 | } |
88 | 0 | } |
89 | 0 | mUpdateWatcher = nullptr; |
90 | 0 | return rv; |
91 | 0 | } |
92 | | |