001package com.pi4j.io.gpio.trigger;
002
003/*
004 * #%L
005 * **********************************************************************
006 * ORGANIZATION  :  Pi4J
007 * PROJECT       :  Pi4J :: Java Library (Core)
008 * FILENAME      :  GpioCallbackTrigger.java
009 *
010 * This file is part of the Pi4J project. More information about
011 * this project can be found here:  https://www.pi4j.com/
012 * **********************************************************************
013 * %%
014 * Copyright (C) 2012 - 2019 Pi4J
015 * %%
016 * This program is free software: you can redistribute it and/or modify
017 * it under the terms of the GNU Lesser General Public License as
018 * published by the Free Software Foundation, either version 3 of the
019 * License, or (at your option) any later version.
020 *
021 * This program is distributed in the hope that it will be useful,
022 * but WITHOUT ANY WARRANTY; without even the implied warranty of
023 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
024 * GNU General Lesser Public License for more details.
025 *
026 * You should have received a copy of the GNU General Lesser Public
027 * License along with this program.  If not, see
028 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
029 * #L%
030 */
031
032
033import com.pi4j.io.gpio.GpioPin;
034import com.pi4j.io.gpio.PinState;
035
036import java.util.List;
037import java.util.concurrent.Callable;
038
039@SuppressWarnings("unused")
040public class GpioCallbackTrigger extends GpioTriggerBase {
041
042    private final Callable<Void> callback;
043
044    public GpioCallbackTrigger(Callable<Void> callback) {
045        super();
046        this.callback = callback;
047    }
048
049    public GpioCallbackTrigger(PinState state, Callable<Void> callback) {
050        super(state);
051        this.callback = callback;
052    }
053
054    public GpioCallbackTrigger(PinState[] states, Callable<Void> callback) {
055        super(states);
056        this.callback = callback;
057    }
058
059    public GpioCallbackTrigger(List<PinState> states, Callable<Void> callback) {
060        super(states);
061        this.callback = callback;
062    }
063
064    @Override
065    public void invoke(GpioPin pin, PinState state) {
066        if (callback != null) {
067            try {
068                callback.call();
069            } catch (Exception e) {
070                e.printStackTrace();
071            }
072        }
073    }
074}