/* TZ display timezones supported on your computer with their offsets from GMT. copyright (c) 2004-2008 Roedy Green, Canadian Mind Products may be copied and used freely for any purpose but military. Roedy Green Canadian Mind Products roedy g at mindprod dotcom http://mindprod.com Version History 1.1 2005-06-30 add stomp bat files 1.2 2005-07-27 add main method 1.3 2006-03-05 reformat with IntelliJ and and Javadoc 1.4 2007-08-08 add default TZ display, convert to JDK 1.5, add time display. add live local time display. 1.5 2007-08-08 add utc time display, sort by offset and id. 1.6 2007-10-09 utc time display, in 24-hour time. 1.7 2008-04-05 add build to title. 1.8 2008-04-27 make columns sortable. 1.9 2008-06-13 flip to JDK 1.6 to allow access to TableRowSorter */ package com.mindprod.tz; import com.mindprod.common11.Build; import com.mindprod.common11.FontFactory; import com.mindprod.common11.VersionCheck; import com.mindprod.common13.CMPAboutJBox; import com.mindprod.common13.Common13; import com.mindprod.common13.HybridJ; import com.mindprod.common13.JEButton; import javax.swing.*; import javax.swing.table.AbstractTableModel; import javax.swing.table.TableCellRenderer; import javax.swing.table.TableColumn; import javax.swing.table.TableColumnModel; import javax.swing.table.TableModel; import javax.swing.table.TableRowSorter; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.text.SimpleDateFormat; import java.util.Arrays; import java.util.Calendar; import java.util.Comparator; import java.util.Date; import java.util.GregorianCalendar; import java.util.TimeZone; /** * Display list of available timezones, short name, long name and raw offset. * * @author Roedy Green, Canadian Mind Products * @version 1.9 2008-06-13 flip to JDK 1.6 to allow access to TableRowSorter */ @SuppressWarnings( { "FieldCanBeLocal" } ) public final class TZ extends JApplet { // ------------------------------ FIELDS ------------------------------ /** * height of applet box in pixels. Does not include surrounding frame. */ private static final int APPLET_HEIGHT = 645; /** * Width of applet box in pixels. */ private static final int APPLET_WIDTH = 822; /** * pale violet blue */ private static final Color APPLET_BACKGROUND = new Color( 0xd4d4ff ); private static final Color INSTRUCTIONS_FOREGROUND = new Color( 0x008000 ); private static final Color LABEL_FOREGROUND = new Color( 0x0000b0 ); /** * for titles */ private static final Color TITLE_FOREGROUND = new Color( 0xdc143c ); /** * pick noon 2007-06-21 0:00 as a typical summer day that likely will be using DST. */ private static final Date aSummerDay = new GregorianCalendar( 2007, Calendar.JUNE, 21 ).getTime(); /** * pick 2007-06-21 0::00 as a typical winter day that will not be using DST. */ private static final Date aWinterDay = new GregorianCalendar( 2007, Calendar.DECEMBER, 21 ).getTime(); /** * for for title second line */ private static final Font TITLE2_FONT = FontFactory.build( "Dialog", Font.PLAIN, 14 ); /** * for for titles and About buttons */ private static final Font TITLE_FONT = FontFactory.build( "Dialog", Font.BOLD, 16 ); /** * zz=PDT zzzz="pacific Daylight Time" EEEE=dow hh=12 hour */ private static final SimpleDateFormat localTimeDisplay = new SimpleDateFormat( "yyyy-MM-dd hh:mm:ss aa zz : zzzzzz EEEE" ); /** * zz=PDT zzzz="pacific Daylight Time" EEEE=dow HH=24 hour */ private static final SimpleDateFormat utcTimeDisplay = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss zz : zzzzzz EEEE" ); /** * undisplayed copyright notice */ @SuppressWarnings( { "UnusedDeclaration" } ) public static final String EMBEDDED_COPYRIGHT = "copyright (c) 2004-2008 Roedy Green, Canadian Mind Products, http://mindprod.com"; private static final String RELEASE_DATE = "2008-06-13"; private static final String TITLE_STRING = "TimeZones"; private static final String VERSION_STRING = "1.9"; private static final int[] PREFERRED_COLUMN_WIDTH = { 45, 45, 215, 330 }; private JButton about; private JLabel instructions; private JLabel localTimeLabel; private JLabel localTZLabel; private JLabel supportedLabel; private JLabel title; /** * title, second line */ private JLabel title2; private JLabel utcTimeLabel; /** * scroll the JTable of timezones */ private JScrollPane scroller; /** * grid of timezone data */ private JTable timeZoneTable; private JTextField localTimeField; private JTextField localTZField; private JTextField utcTimeField; /** * timer to help us keep clock up to date. */ private Timer timer; // -------------------------- PUBLIC INSTANCE METHODS -------------------------- /** * Standard applet init */ public void init() { if ( !VersionCheck.isJavaVersionOK( 1, 5, 0, this ) ) { return; } Common13.setLaf(); Container contentPane = this.getContentPane(); contentPane.setBackground( APPLET_BACKGROUND ); contentPane.setLayout( new GridBagLayout() ); buildComponents(); layoutComponents( contentPane ); this.validate(); } /** * usual Applet start, we start up Timer to update clock */ public void start() { timer = new Timer( 500/* every half second */, new ActionListener() { public void actionPerformed( ActionEvent e ) { // executed on Swing Thread. localTimeField.setText( localTimeDisplay.format( new Date() ) ); utcTimeField.setText( utcTimeDisplay.format( new Date() ) ); } } ); timer.setRepeats( true ); // start it ticking, timer.start(); } /** * usual Applet stop, we kill Timer to update clock */ public void stop() { timer.stop(); timer = null; } // -------------------------- STATIC METHODS -------------------------- static { utcTimeDisplay.setTimeZone( TimeZone.getTimeZone( "UTC" ) ); } // -------------------------- OTHER METHODS -------------------------- /** * allocate all components */ private void buildComponents() { title = new JLabel( TITLE_STRING + " " + VERSION_STRING ); title.setFont( TITLE_FONT ); title.setForeground( TITLE_FOREGROUND ); title2 = new JLabel( "released:" + RELEASE_DATE + " build:" + Build.BUILD_NUMBER ); title2.setFont( TITLE2_FONT ); title2.setForeground( TITLE_FOREGROUND ); about = new JEButton( "About" ); about.setToolTipText( "About " + TITLE_STRING + " " + VERSION_STRING ); about.addActionListener( new ActionListener() { /** * Method actionPerformed ... * * @param e of type ActionEvent */ public void actionPerformed( ActionEvent e ) { // open aboutbox frame new CMPAboutJBox( TITLE_STRING, VERSION_STRING, "Display all Timezones that Java supports on this machine.", "", "freeware", RELEASE_DATE, 2004, "Roedy Green", "TZ", "1.6" ); } } ); utcTimeLabel = new JLabel( "UTC" ); utcTimeLabel.setForeground( LABEL_FOREGROUND ); utcTimeField = new JTextField( localTimeDisplay.format( new Date() ) ); utcTimeField.setEditable( false ); localTimeLabel = new JLabel( "local time" ); localTimeLabel.setForeground( LABEL_FOREGROUND ); localTimeField = new JTextField( localTimeDisplay.format( new Date() ) ); localTimeField.setEditable( false ); localTZLabel = new JLabel( "local TZ" ); localTZLabel.setForeground( LABEL_FOREGROUND ); localTZField = new JTextField( TimeZone.getDefault().getDisplayName() ); localTZField.setEditable( false ); supportedLabel = new JLabel( "Supported TimeZones", JLabel.CENTER ); supportedLabel.setForeground( LABEL_FOREGROUND ); final String[] allTimeZoneIDs = TimeZone.getAvailableIDs(); Arrays.sort( allTimeZoneIDs, new ByOffset() ); final TZTableModel model = new TZTableModel( allTimeZoneIDs ); timeZoneTable = new JTable( model ); // set some initial column widths final TableColumnModel tableColumnModel = timeZoneTable.getColumnModel(); // give a bit more space between columns tableColumnModel.setColumnMargin( 5 ); // hook up our HeaderRenderer to all four columns // and set preferred width in pixels for each column. final TableCellRenderer headerRenderer = new HeaderRenderer(); for ( int i = 0; i < 4; i++ ) { final TableColumn tableColumn = tableColumnModel.getColumn( i ); tableColumn.setHeaderRenderer( headerRenderer ); tableColumn.setPreferredWidth( PREFERRED_COLUMN_WIDTH[ i ] ); } scroller = new JScrollPane( timeZoneTable, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED ); // this is all you need to make every column sortable ascending/descending by clicking on the heading. timeZoneTable.setRowSorter( new TableRowSorter( model ) ); instructions = new JLabel( "Click column heading to sort.", JLabel.CENTER ); instructions.setForeground( INSTRUCTIONS_FOREGROUND ); } private void layoutComponents( Container contentPane ) { // ---0-----1-----2--------3-- // 0 title----- title2-- about // ~time time---------------- // ~default default----------- // ~ supported---------------- // jtable -------------------- // instructions--------------- // x y w h wtx wty anchor fill T L B R padx pady contentPane.add( title, new GridBagConstraints( 0, 0, 2, 1, 0.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets( 10, 10, 5, 5 ), 0, 0 ) ); contentPane.add( title2, new GridBagConstraints( 2, 0, 1, 1, 0.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets( 10, 5, 5, 5 ), 0, 0 ) ); contentPane.add( about, new GridBagConstraints( 3, 0, 1, 1, 0.0, 0.0, GridBagConstraints.EAST, GridBagConstraints.NONE, new Insets( 10, 5, 5, 10 ), 0, 0 ) ); contentPane.add( utcTimeLabel, new GridBagConstraints( 0, 1, 1, 1, 0.0, 0.0, GridBagConstraints.EAST, GridBagConstraints.NONE, new Insets( 10, 10, 0, 5 ), 0, 0 ) ); contentPane.add( utcTimeField, new GridBagConstraints( 1, 1, 3, 1, 0.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 10, 5, 0, 10 ), 0, 0 ) ); contentPane.add( localTimeLabel, new GridBagConstraints( 0, 2, 1, 1, 0.0, 0.0, GridBagConstraints.EAST, GridBagConstraints.NONE, new Insets( 10, 10, 0, 5 ), 0, 0 ) ); contentPane.add( localTimeField, new GridBagConstraints( 1, 2, 3, 1, 0.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 10, 5, 0, 10 ), 0, 0 ) ); contentPane.add( localTZLabel, new GridBagConstraints( 0, 3, 1, 1, 0.0, 0.0, GridBagConstraints.EAST, GridBagConstraints.NONE, new Insets( 10, 10, 0, 5 ), 0, 0 ) ); contentPane.add( localTZField, new GridBagConstraints( 1, 3, 3, 1, 0.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 10, 5, 0, 10 ), 0, 0 ) ); contentPane.add( supportedLabel, new GridBagConstraints( 0, 4, 3, 1, 0.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets( 10, 10, 0, 10 ), 0, 0 ) ); contentPane.add( scroller, new GridBagConstraints( 0, 5, 4, 1, 1.0, 1.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets( 10, 10, 10, 10 ), 0, 0 ) ); contentPane.add( instructions, new GridBagConstraints( 0, 6, 4, 1, 0.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets( 10, 10, 10, 10 ), 0, 0 ) ); } // -------------------------- INNER CLASSES -------------------------- /** * used to sort list of TimeZone ids in order */ private static final class ByOffset implements Comparator { /** * Compare two TimeZone Ids. effectively returns a-b; * * @param o1 first object a to be compared * @param o2 second object b to be compared * @return +1 if a>b, 0 if a=b, -1 if acolumnIndex. This is used to initialize the table's column * header name. Note: this name does not need to be unique; two columns in a table can have the same name. * * @param column the index of the column * @return the name of the column */ public String getColumnName( int column ) { return columnNames[ column ]; } /** * constructor. * * @param timeZoneIDs array of all possible timezone IDs, sorted in some reasonable order. */ TZTableModel( String[] timeZoneIDs ) { this.timeZoneIDs = timeZoneIDs; } /** * Returns the most specific superclass for all the cell values in the column. This is used by the * JTable to set up a default renderer and editor for the column. * * @param columnIndex the index of the column * @return the common ancestor class of the object values in the model. */ public Class getColumnClass( int columnIndex ) { switch ( columnIndex ) { case 0: case 1: return Double.class; case 2: case 3: return String.class; default: throw new ArrayIndexOutOfBoundsException( "column index out of range in get ColumnClass" ); } } /** * Returns the number of columns in the model. A JTable uses this method to determine how many * columns it should create and display by default. * * @return the number of columns in the model * @see #getRowCount */ public int getColumnCount() { return 4; } /** * names of the columns */ final static String[] columnNames = { "Offset", "DST", "ID", "Display Name" }; /** * Returns the number of rows in the model. A JTable uses this method to determine how many rows it * should display. This method should be quick, as it is called frequently during rendering. * * @return the number of rows in the model * @see #getColumnCount */ public int getRowCount() { return timeZoneIDs.length; } /** * timeZoneIDs array of all possible timezone IDs */ private final String[] timeZoneIDs; /* get value at given row and column * @param row zero-based row number * @param col zero-based column number * @return Object, will be String, Integer or Float. */ public Object getValueAt( int rowIndex, int columnIndex ) { final String timeZoneID = timeZoneIDs[ rowIndex ]; final TimeZone timeZone = TimeZone.getTimeZone( timeZoneID ); switch ( columnIndex ) { case 0: // offset in hours. return timeZone.getRawOffset() / ( 60 * 60 * 1000.0D ); case 1: final double raw = timeZone.getRawOffset() / ( 60 * 60 * 1000.0D );// hrs winter final double summer = timeZone.getOffset( aSummerDay.getTime() ) / ( 60 * 60 * 1000.0D );// millis -> hrs summer final double winter = timeZone.getOffset( aWinterDay.getTime() ) / ( 60 * 60 * 1000.0D );// millis -> hrs summer // dst in hours. return ( raw == summer ) ? winter : summer; case 2: return timeZoneID; case 3: return timeZone.getDisplayName(); default: throw new ArrayIndexOutOfBoundsException( "col index out of range in get getValueAt" ); } } } // --------------------------- main() method --------------------------- /** * Allow this Applet to run as as application as well. * * @param args command line arguments ignored. */ public static void main( String args[] ) { HybridJ.fireup( new TZ(), TITLE_STRING + " " + VERSION_STRING, APPLET_WIDTH, APPLET_HEIGHT ); }// end main }