001    // License: GPL. For details, see LICENSE file.
002    package org.openstreetmap.josm.gui.preferences.projection;
003    
004    import static org.openstreetmap.josm.tools.I18n.tr;
005    
006    import java.awt.GridBagLayout;
007    import java.awt.event.ActionListener;
008    import java.util.ArrayList;
009    import java.util.Arrays;
010    import java.util.Collection;
011    import java.util.List;
012    
013    import javax.swing.ButtonGroup;
014    import javax.swing.JLabel;
015    import javax.swing.JPanel;
016    import javax.swing.JRadioButton;
017    
018    import org.openstreetmap.josm.tools.GBC;
019    
020    public class UTMProjectionChoice extends ListProjectionChoice {
021    
022        public enum Hemisphere { North, South }
023    
024        private static final Hemisphere DEFAULT_HEMISPHERE = Hemisphere.North;
025    
026        private Hemisphere hemisphere;
027        
028        private final static List<String> cbEntries = new ArrayList<String>();
029        static {
030            for (int i = 1; i <= 60; i++) {
031                cbEntries.add(Integer.toString(i));
032            }
033        }
034    
035        public UTMProjectionChoice() {
036            super(tr("UTM"), "core:utm", cbEntries.toArray(), tr("UTM Zone"));
037        }
038    
039        private class UTMPanel extends CBPanel {
040    
041            public JRadioButton north, south;
042    
043            public UTMPanel(Object[] entries, int initialIndex, String label, ActionListener listener) {
044                super(entries, initialIndex, label, listener);
045    
046                //Hemisphere
047                north = new JRadioButton();
048                north.setSelected(hemisphere == Hemisphere.North);
049                south = new JRadioButton();
050                south.setSelected(hemisphere == Hemisphere.South);
051    
052                ButtonGroup group = new ButtonGroup();
053                group.add(north);
054                group.add(south);
055    
056                JPanel bPanel = new JPanel();
057                bPanel.setLayout(new GridBagLayout());
058    
059                bPanel.add(new JLabel(tr("North")), GBC.std().insets(5, 5, 0, 5));
060                bPanel.add(north, GBC.std().fill(GBC.HORIZONTAL));
061                bPanel.add(GBC.glue(1, 0), GBC.std().fill(GBC.HORIZONTAL));
062                bPanel.add(new JLabel(tr("South")), GBC.std().insets(5, 5, 0, 5));
063                bPanel.add(south, GBC.std().fill(GBC.HORIZONTAL));
064                bPanel.add(GBC.glue(1, 1), GBC.eol().fill(GBC.BOTH));
065    
066                this.add(new JLabel(tr("Hemisphere")), GBC.std().insets(5,5,0,5));
067                this.add(GBC.glue(1, 0), GBC.std().fill(GBC.HORIZONTAL));
068                this.add(bPanel, GBC.eop().fill(GBC.HORIZONTAL));
069                this.add(GBC.glue(1, 1), GBC.eol().fill(GBC.BOTH));
070    
071                if (listener != null) {
072                    north.addActionListener(listener);
073                    south.addActionListener(listener);
074                }
075            }
076        }
077    
078        @Override
079        public JPanel getPreferencePanel(ActionListener listener) {
080            return new UTMPanel(entries, index, label, listener);
081        }
082    
083        @Override
084        public String getCurrentCode() {
085            int zone = index + 1;
086            int code = 32600 + zone + (hemisphere == Hemisphere.South ? 100 : 0);
087            return "EPSG:" + Integer.toString(code);
088        }
089    
090        @Override
091        public String getProjectionName() {
092            return tr("UTM");
093        }
094    
095    
096        @Override
097        public Collection<String> getPreferences(JPanel panel) {
098            UTMPanel p = (UTMPanel) panel;
099            int index = p.prefcb.getSelectedIndex();
100            Hemisphere hemisphere = p.south.isSelected()?Hemisphere.South:Hemisphere.North;
101            return Arrays.asList(indexToZone(index), hemisphere.toString());
102        }
103    
104        @Override
105        public String[] allCodes() {
106            ArrayList<String> projections = new ArrayList<String>(60*4);
107            for (int zone = 1;zone <= 60; zone++) {
108                for (Hemisphere hemisphere : Hemisphere.values()) {
109                    projections.add("EPSG:" + (32600 + zone + (hemisphere == Hemisphere.South?100:0)));
110                }
111            }
112            return projections.toArray(new String[0]);
113        }
114    
115        @Override
116        public Collection<String> getPreferencesFromCode(String code) {
117    
118            if (code.startsWith("EPSG:326") || code.startsWith("EPSG:327")) {
119                try {
120                    Hemisphere hemisphere = code.charAt(7)=='6'?Hemisphere.North:Hemisphere.South;
121                    String zonestring = code.substring(8);
122                    int zoneval = Integer.parseInt(zonestring);
123                    if(zoneval > 0 && zoneval <= 60)
124                        return Arrays.asList(zonestring, hemisphere.toString());
125                } catch(NumberFormatException e) {}
126            }
127            return null;
128        }
129    
130        @Override
131        public void setPreferences(Collection<String> args) {
132            super.setPreferences(args);
133            Hemisphere hemisphere = DEFAULT_HEMISPHERE;
134    
135            if(args != null) {
136                String[] array = args.toArray(new String[0]);
137    
138                if (array.length > 1) {
139                    hemisphere = Hemisphere.valueOf(array[1]);
140                }
141            }
142            this.hemisphere = hemisphere;
143        }
144    
145        @Override
146        protected String indexToZone(int index) {
147            return Integer.toString(index + 1);
148        }
149    
150        @Override
151        protected int zoneToIndex(String zone) {
152            try {
153                return Integer.parseInt(zone) - 1;
154            } catch(NumberFormatException e) {}
155            return defaultIndex;
156        }
157    
158    }