/* * Copyright 2014 Yaroslav Mytkalyk * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.docd.purefm.operations; import android.support.annotation.NonNull; /** * Operation that is performed by {@link com.docd.purefm.operations.OperationsService} * * @param <Param> type of array that will be passed to {@link #execute(Object[])} * @param <Result> type that is returned by {@link #execute(Object[])} * * @author Doctoror */ abstract class Operation<Param, Result> { private volatile boolean mCanceled; private Thread mOperationThread; protected Operation() { } public final void cancel(final boolean interrupt) { mCanceled = true; if (interrupt) { mOperationThread.interrupt(); } } protected final boolean isCanceled() { return mCanceled; } public final Result execute(@NonNull final Param... params) { mOperationThread = Thread.currentThread(); return doInBackground(params); } protected abstract Result doInBackground(@NonNull Param... params); }