87 lines
2.0 KiB
C++
87 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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 = nullptr;
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nsRepeatService::nsRepeatService()
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: mCallback(nullptr), mCallbackData(nullptr)
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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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uint32_t aInitialDelay)
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{
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NS_PRECONDITION(aCallback != nullptr, "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 = nullptr;
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}
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mCallback = nullptr;
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mCallbackData = nullptr;
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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_ISUPPORTS(nsRepeatService, nsITimerCallback)
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