/src/mozilla-central/layout/xul/nsRepeatService.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 | | // |
8 | | // Eric Vaughan |
9 | | // Netscape Communications |
10 | | // |
11 | | // See documentation in associated header file |
12 | | // |
13 | | |
14 | | #include "nsRepeatService.h" |
15 | | #include "mozilla/StaticPtr.h" |
16 | | #include "nsIDocument.h" |
17 | | #include "nsIServiceManager.h" |
18 | | |
19 | | using namespace mozilla; |
20 | | |
21 | | static StaticAutoPtr<nsRepeatService> gRepeatService; |
22 | | |
23 | | nsRepeatService::nsRepeatService() |
24 | | : mCallback(nullptr), mCallbackData(nullptr) |
25 | 0 | { |
26 | 0 | } |
27 | | |
28 | | nsRepeatService::~nsRepeatService() |
29 | 0 | { |
30 | 0 | NS_ASSERTION(!mCallback && !mCallbackData, "Callback was not removed before shutdown"); |
31 | 0 | } |
32 | | |
33 | | /* static */ nsRepeatService* |
34 | | nsRepeatService::GetInstance() |
35 | 0 | { |
36 | 0 | if (!gRepeatService) { |
37 | 0 | gRepeatService = new nsRepeatService(); |
38 | 0 | } |
39 | 0 | return gRepeatService; |
40 | 0 | } |
41 | | |
42 | | /*static*/ void |
43 | | nsRepeatService::Shutdown() |
44 | 0 | { |
45 | 0 | gRepeatService = nullptr; |
46 | 0 | } |
47 | | |
48 | | void |
49 | | nsRepeatService::Start(Callback aCallback, void* aCallbackData, |
50 | | nsIDocument* aDocument, const nsACString& aCallbackName, |
51 | | uint32_t aInitialDelay) |
52 | 0 | { |
53 | 0 | MOZ_ASSERT(aCallback != nullptr, "null ptr"); |
54 | 0 |
|
55 | 0 | mCallback = aCallback; |
56 | 0 | mCallbackData = aCallbackData; |
57 | 0 | mCallbackName = aCallbackName; |
58 | 0 |
|
59 | 0 | mRepeatTimer = NS_NewTimer( |
60 | 0 | aDocument->EventTargetFor(TaskCategory::Other)); |
61 | 0 |
|
62 | 0 | if (mRepeatTimer) { |
63 | 0 | InitTimerCallback(aInitialDelay); |
64 | 0 | } |
65 | 0 | } |
66 | | |
67 | | void nsRepeatService::Stop(Callback aCallback, void* aCallbackData) |
68 | 0 | { |
69 | 0 | if (mCallback != aCallback || mCallbackData != aCallbackData) |
70 | 0 | return; |
71 | 0 | |
72 | 0 | //printf("Stopping repeat timer\n"); |
73 | 0 | if (mRepeatTimer) { |
74 | 0 | mRepeatTimer->Cancel(); |
75 | 0 | mRepeatTimer = nullptr; |
76 | 0 | } |
77 | 0 | mCallback = nullptr; |
78 | 0 | mCallbackData = nullptr; |
79 | 0 | } |
80 | | |
81 | | void |
82 | | nsRepeatService::InitTimerCallback(uint32_t aInitialDelay) |
83 | 0 | { |
84 | 0 | if (!mRepeatTimer) { |
85 | 0 | return; |
86 | 0 | } |
87 | 0 | |
88 | 0 | mRepeatTimer->InitWithNamedFuncCallback([](nsITimer* aTimer, void* aClosure) { |
89 | 0 | // Use gRepeatService instead of nsRepeatService::GetInstance() (because |
90 | 0 | // we don't want nsRepeatService::GetInstance() to re-create a new instance |
91 | 0 | // for us, if we happen to get invoked after nsRepeatService::Shutdown() has |
92 | 0 | // nulled out gRepeatService). |
93 | 0 | nsRepeatService* rs = gRepeatService; |
94 | 0 | if (!rs) { |
95 | 0 | return; |
96 | 0 | } |
97 | 0 | |
98 | 0 | if (rs->mCallback) { |
99 | 0 | rs->mCallback(rs->mCallbackData); |
100 | 0 | } |
101 | 0 |
|
102 | 0 | rs->InitTimerCallback(REPEAT_DELAY); |
103 | 0 | }, nullptr, aInitialDelay, nsITimer::TYPE_ONE_SHOT, mCallbackName.Data()); |
104 | 0 | } |