1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/nsRepeatService.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,86 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +//
1.10 +// Eric Vaughan
1.11 +// Netscape Communications
1.12 +//
1.13 +// See documentation in associated header file
1.14 +//
1.15 +
1.16 +#include "nsRepeatService.h"
1.17 +#include "nsIServiceManager.h"
1.18 +
1.19 +nsRepeatService* nsRepeatService::gInstance = nullptr;
1.20 +
1.21 +nsRepeatService::nsRepeatService()
1.22 +: mCallback(nullptr), mCallbackData(nullptr)
1.23 +{
1.24 +}
1.25 +
1.26 +nsRepeatService::~nsRepeatService()
1.27 +{
1.28 + NS_ASSERTION(!mCallback && !mCallbackData, "Callback was not removed before shutdown");
1.29 +}
1.30 +
1.31 +nsRepeatService*
1.32 +nsRepeatService::GetInstance()
1.33 +{
1.34 + if (!gInstance) {
1.35 + gInstance = new nsRepeatService();
1.36 + NS_IF_ADDREF(gInstance);
1.37 + }
1.38 + return gInstance;
1.39 +}
1.40 +
1.41 +/*static*/ void
1.42 +nsRepeatService::Shutdown()
1.43 +{
1.44 + NS_IF_RELEASE(gInstance);
1.45 +}
1.46 +
1.47 +void nsRepeatService::Start(Callback aCallback, void* aCallbackData,
1.48 + uint32_t aInitialDelay)
1.49 +{
1.50 + NS_PRECONDITION(aCallback != nullptr, "null ptr");
1.51 +
1.52 + mCallback = aCallback;
1.53 + mCallbackData = aCallbackData;
1.54 + nsresult rv;
1.55 + mRepeatTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
1.56 +
1.57 + if (NS_SUCCEEDED(rv)) {
1.58 + mRepeatTimer->InitWithCallback(this, aInitialDelay, nsITimer::TYPE_ONE_SHOT);
1.59 + }
1.60 +}
1.61 +
1.62 +void nsRepeatService::Stop(Callback aCallback, void* aCallbackData)
1.63 +{
1.64 + if (mCallback != aCallback || mCallbackData != aCallbackData)
1.65 + return;
1.66 +
1.67 + //printf("Stopping repeat timer\n");
1.68 + if (mRepeatTimer) {
1.69 + mRepeatTimer->Cancel();
1.70 + mRepeatTimer = nullptr;
1.71 + }
1.72 + mCallback = nullptr;
1.73 + mCallbackData = nullptr;
1.74 +}
1.75 +
1.76 +NS_IMETHODIMP nsRepeatService::Notify(nsITimer *timer)
1.77 +{
1.78 + // do callback
1.79 + if (mCallback)
1.80 + mCallback(mCallbackData);
1.81 +
1.82 + // start timer again.
1.83 + if (mRepeatTimer) {
1.84 + mRepeatTimer->InitWithCallback(this, REPEAT_DELAY, nsITimer::TYPE_ONE_SHOT);
1.85 + }
1.86 + return NS_OK;
1.87 +}
1.88 +
1.89 +NS_IMPL_ISUPPORTS(nsRepeatService, nsITimerCallback)
