gecko-dev/dom/tv/TVServiceRunnables.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_TVServiceRunnables_h
#define mozilla_dom_TVServiceRunnables_h
#include "nsITVService.h"
#include "nsThreadUtils.h"
namespace mozilla {
namespace dom {
/*
* NOTE: The callbacks passing to |nsITVService| must be called asynchronously.
* In the implementation, actual runnable objects may need to be created and
* call the callback off of the runnables, after the function returns. Here are
* some ready-made runnables and could be used in the following way.
*
* nsCOMPtr<nsIRunnable> runnable =
* new TVServiceNotifyRunnable(callback, dataList, optional errorCode);
* return NS_DispatchToCurrentThread(runnable);
*/
class TVServiceNotifyRunnable final : public nsRunnable
{
public:
TVServiceNotifyRunnable(nsITVServiceCallback* aCallback,
nsIArray* aDataList,
uint16_t aErrorCode = nsITVServiceCallback::TV_ERROR_OK)
: mCallback(aCallback)
, mDataList(aDataList)
, mErrorCode(aErrorCode)
{}
NS_IMETHOD Run() override
{
if (mErrorCode == nsITVServiceCallback::TV_ERROR_OK) {
return mCallback->NotifySuccess(mDataList);
} else {
return mCallback->NotifyError(mErrorCode);
}
}
private:
nsCOMPtr<nsITVServiceCallback> mCallback;
nsCOMPtr<nsIArray> mDataList;
uint16_t mErrorCode;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_TVServiceRunnables_h