/src/mozilla-central/dom/presentation/AvailabilityCollection.cpp
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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 "AvailabilityCollection.h" |
8 | | |
9 | | #include "mozilla/ClearOnShutdown.h" |
10 | | #include "PresentationAvailability.h" |
11 | | |
12 | | namespace mozilla { |
13 | | namespace dom { |
14 | | |
15 | | /* static */ |
16 | | StaticAutoPtr<AvailabilityCollection> |
17 | | AvailabilityCollection::sSingleton; |
18 | | static bool gOnceAliveNowDead = false; |
19 | | |
20 | | /* static */ AvailabilityCollection* |
21 | | AvailabilityCollection::GetSingleton() |
22 | 0 | { |
23 | 0 | MOZ_ASSERT(NS_IsMainThread()); |
24 | 0 |
|
25 | 0 | if (!sSingleton && !gOnceAliveNowDead) { |
26 | 0 | sSingleton = new AvailabilityCollection(); |
27 | 0 | ClearOnShutdown(&sSingleton); |
28 | 0 | } |
29 | 0 |
|
30 | 0 | return sSingleton; |
31 | 0 | } |
32 | | |
33 | | AvailabilityCollection::AvailabilityCollection() |
34 | 0 | { |
35 | 0 | MOZ_COUNT_CTOR(AvailabilityCollection); |
36 | 0 | } |
37 | | |
38 | | AvailabilityCollection::~AvailabilityCollection() |
39 | 0 | { |
40 | 0 | MOZ_COUNT_DTOR(AvailabilityCollection); |
41 | 0 | gOnceAliveNowDead = true; |
42 | 0 | } |
43 | | |
44 | | void |
45 | | AvailabilityCollection::Add(PresentationAvailability* aAvailability) |
46 | 0 | { |
47 | 0 | MOZ_ASSERT(NS_IsMainThread()); |
48 | 0 |
|
49 | 0 | if (!aAvailability) { |
50 | 0 | return; |
51 | 0 | } |
52 | 0 | |
53 | 0 | WeakPtr<PresentationAvailability> availability = aAvailability; |
54 | 0 | if (mAvailabilities.Contains(aAvailability)) { |
55 | 0 | return; |
56 | 0 | } |
57 | 0 | |
58 | 0 | mAvailabilities.AppendElement(aAvailability); |
59 | 0 | } |
60 | | |
61 | | void |
62 | | AvailabilityCollection::Remove(PresentationAvailability* aAvailability) |
63 | 0 | { |
64 | 0 | MOZ_ASSERT(NS_IsMainThread()); |
65 | 0 |
|
66 | 0 | if (!aAvailability) { |
67 | 0 | return; |
68 | 0 | } |
69 | 0 | |
70 | 0 | WeakPtr<PresentationAvailability> availability = aAvailability; |
71 | 0 | mAvailabilities.RemoveElement(availability); |
72 | 0 | } |
73 | | |
74 | | already_AddRefed<PresentationAvailability> |
75 | | AvailabilityCollection::Find(const uint64_t aWindowId, const nsTArray<nsString>& aUrls) |
76 | 0 | { |
77 | 0 | MOZ_ASSERT(NS_IsMainThread()); |
78 | 0 |
|
79 | 0 | // Loop backwards to allow removing elements in the loop. |
80 | 0 | for (int i = mAvailabilities.Length() - 1; i >= 0; --i) { |
81 | 0 | WeakPtr<PresentationAvailability> availability = mAvailabilities[i]; |
82 | 0 | if (!availability) { |
83 | 0 | // The availability object was destroyed. Remove it from the list. |
84 | 0 | mAvailabilities.RemoveElementAt(i); |
85 | 0 | continue; |
86 | 0 | } |
87 | 0 | |
88 | 0 | if (availability->Equals(aWindowId, aUrls)) { |
89 | 0 | RefPtr<PresentationAvailability> matchedAvailability = availability.get(); |
90 | 0 | return matchedAvailability.forget(); |
91 | 0 | } |
92 | 0 | } |
93 | 0 |
|
94 | 0 |
|
95 | 0 | return nullptr; |
96 | 0 | } |
97 | | |
98 | | } // namespace dom |
99 | | } // namespace mozilla |