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119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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//
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// Eric Vaughan
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// Netscape Communications
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//
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// See documentation in associated header file
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//
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#include "nsRepeatService.h"
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#include "nsIServiceManager.h"
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nsRepeatService* nsRepeatService::gInstance = nsnull;
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nsRepeatService::nsRepeatService()
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: mCallback(nsnull), mCallbackData(nsnull)
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{
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}
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nsRepeatService::~nsRepeatService()
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{
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NS_ASSERTION(!mCallback && !mCallbackData, "Callback was not removed before shutdown");
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}
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nsRepeatService*
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nsRepeatService::GetInstance()
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{
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if (!gInstance) {
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gInstance = new nsRepeatService();
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NS_IF_ADDREF(gInstance);
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}
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return gInstance;
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}
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/*static*/ void
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nsRepeatService::Shutdown()
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{
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NS_IF_RELEASE(gInstance);
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}
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void nsRepeatService::Start(Callback aCallback, void* aCallbackData,
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PRUint32 aInitialDelay)
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{
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NS_PRECONDITION(aCallback != nsnull, "null ptr");
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mCallback = aCallback;
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mCallbackData = aCallbackData;
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nsresult rv;
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mRepeatTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
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if (NS_SUCCEEDED(rv)) {
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mRepeatTimer->InitWithCallback(this, aInitialDelay, nsITimer::TYPE_ONE_SHOT);
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}
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}
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void nsRepeatService::Stop(Callback aCallback, void* aCallbackData)
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{
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if (mCallback != aCallback || mCallbackData != aCallbackData)
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return;
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//printf("Stopping repeat timer\n");
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if (mRepeatTimer) {
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mRepeatTimer->Cancel();
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mRepeatTimer = nsnull;
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}
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mCallback = nsnull;
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mCallbackData = nsnull;
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}
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NS_IMETHODIMP nsRepeatService::Notify(nsITimer *timer)
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{
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// do callback
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if (mCallback)
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mCallback(mCallbackData);
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// start timer again.
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if (mRepeatTimer) {
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mRepeatTimer->InitWithCallback(this, REPEAT_DELAY, nsITimer::TYPE_ONE_SHOT);
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}
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return NS_OK;
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}
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NS_IMPL_ISUPPORTS1(nsRepeatService, nsITimerCallback)
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