1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla Communicator client code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either of the GNU General Public License Version 2 or later (the "GPL"),
26 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
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33 : * the provisions above, a recipient may use your version of this file under
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35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : //
39 : // Eric Vaughan
40 : // Netscape Communications
41 : //
42 : // See documentation in associated header file
43 : //
44 :
45 : #include "nsRepeatService.h"
46 : #include "nsIServiceManager.h"
47 :
48 : nsRepeatService* nsRepeatService::gInstance = nsnull;
49 :
50 0 : nsRepeatService::nsRepeatService()
51 0 : : mCallback(nsnull), mCallbackData(nsnull)
52 : {
53 0 : }
54 :
55 0 : nsRepeatService::~nsRepeatService()
56 : {
57 0 : NS_ASSERTION(!mCallback && !mCallbackData, "Callback was not removed before shutdown");
58 0 : }
59 :
60 : nsRepeatService*
61 0 : nsRepeatService::GetInstance()
62 : {
63 0 : if (!gInstance) {
64 0 : gInstance = new nsRepeatService();
65 0 : NS_IF_ADDREF(gInstance);
66 : }
67 0 : return gInstance;
68 : }
69 :
70 : /*static*/ void
71 1403 : nsRepeatService::Shutdown()
72 : {
73 1403 : NS_IF_RELEASE(gInstance);
74 1403 : }
75 :
76 0 : void nsRepeatService::Start(Callback aCallback, void* aCallbackData,
77 : PRUint32 aInitialDelay)
78 : {
79 0 : NS_PRECONDITION(aCallback != nsnull, "null ptr");
80 :
81 0 : mCallback = aCallback;
82 0 : mCallbackData = aCallbackData;
83 : nsresult rv;
84 0 : mRepeatTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
85 :
86 0 : if (NS_SUCCEEDED(rv)) {
87 0 : mRepeatTimer->InitWithCallback(this, aInitialDelay, nsITimer::TYPE_ONE_SHOT);
88 : }
89 0 : }
90 :
91 0 : void nsRepeatService::Stop(Callback aCallback, void* aCallbackData)
92 : {
93 0 : if (mCallback != aCallback || mCallbackData != aCallbackData)
94 0 : return;
95 :
96 : //printf("Stopping repeat timer\n");
97 0 : if (mRepeatTimer) {
98 0 : mRepeatTimer->Cancel();
99 0 : mRepeatTimer = nsnull;
100 : }
101 0 : mCallback = nsnull;
102 0 : mCallbackData = nsnull;
103 : }
104 :
105 0 : NS_IMETHODIMP nsRepeatService::Notify(nsITimer *timer)
106 : {
107 : // do callback
108 0 : if (mCallback)
109 0 : mCallback(mCallbackData);
110 :
111 : // start timer again.
112 0 : if (mRepeatTimer) {
113 0 : mRepeatTimer->InitWithCallback(this, REPEAT_DELAY, nsITimer::TYPE_ONE_SHOT);
114 : }
115 0 : return NS_OK;
116 : }
117 :
118 0 : NS_IMPL_ISUPPORTS1(nsRepeatService, nsITimerCallback)
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