001/* 002 * This file is part of McIDAS-V 003 * 004 * Copyright 2007-2024 005 * Space Science and Engineering Center (SSEC) 006 * University of Wisconsin - Madison 007 * 1225 W. Dayton Street, Madison, WI 53706, USA 008 * https://www.ssec.wisc.edu/mcidas/ 009 * 010 * All Rights Reserved 011 * 012 * McIDAS-V is built on Unidata's IDV and SSEC's VisAD libraries, and 013 * some McIDAS-V source code is based on IDV and VisAD source code. 014 * 015 * McIDAS-V is free software; you can redistribute it and/or modify 016 * it under the terms of the GNU Lesser Public License as published by 017 * the Free Software Foundation; either version 3 of the License, or 018 * (at your option) any later version. 019 * 020 * McIDAS-V is distributed in the hope that it will be useful, 021 * but WITHOUT ANY WARRANTY; without even the implied warranty of 022 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 023 * GNU Lesser Public License for more details. 024 * 025 * You should have received a copy of the GNU Lesser Public License 026 * along with this program. If not, see https://www.gnu.org/licenses/. 027 */ 028package edu.wisc.ssec.mcidasv.monitors.time; 029 030import java.text.SimpleDateFormat; 031import java.util.Date; 032import java.util.List; 033import java.util.concurrent.CopyOnWriteArrayList; 034 035import javax.swing.SwingUtilities; 036 037import ucar.unidata.util.GuiUtils; 038 039import edu.wisc.ssec.mcidasv.monitors.Monitorable; 040import edu.wisc.ssec.mcidasv.monitors.Monitoring; 041 042public class TimeMonitor implements Monitorable { 043 044 private final List<Monitoring> listeners = new CopyOnWriteArrayList<>(); 045 private final SimpleDateFormat clockFormat = new SimpleDateFormat("HH:mm:ss z"); 046 047 public TimeMonitor() { 048 // nothin! 049 } 050 051 public void addMonitor(final Monitoring listener) { 052 listeners.add(listener); 053 } 054 055 public void removeMonitor(final Monitoring listener) { 056 if (!listeners.isEmpty()) { 057 listeners.remove(listener); 058 } 059 } 060 061 public boolean hasMonitors() { 062 return !listeners.isEmpty(); 063 } 064 065 public void run() { 066 Date date = new Date(); 067 clockFormat.setTimeZone(GuiUtils.getTimeZone()); 068 String output = " "+clockFormat.format(date); 069 final TimeMonitorEvent event = new TimeMonitorEvent(this, output); 070 for (final Monitoring listener : listeners) { 071 SwingUtilities.invokeLater(new Runnable() { 072 public void run() { 073 listener.monitorUpdated(event); 074 } 075 }); 076 } 077 } 078}