001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.preferences.advanced;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005
006import java.util.ArrayList;
007import java.util.Arrays;
008import java.util.Collections;
009import java.util.LinkedHashMap;
010import java.util.List;
011import java.util.Map;
012import java.util.Map.Entry;
013
014import javax.swing.JComponent;
015import javax.swing.JPanel;
016import javax.swing.table.AbstractTableModel;
017
018import org.openstreetmap.josm.spi.preferences.MapListSetting;
019
020/**
021 * Editor for List of Maps preference entries.
022 * @since 4634
023 */
024public class MapListEditor extends AbstractTableListEditor<Map<String, String>> {
025
026    private final transient List<List<String>> dataKeys;
027    private final transient List<List<String>> dataValues;
028
029    /**
030     * Constructs a new {@code MapListEditor}.
031     * @param gui The parent component
032     * @param entry preference entry
033     * @param setting list of maps setting
034     */
035    public MapListEditor(JComponent gui, PrefEntry entry, MapListSetting setting) {
036        super(gui, tr("Change list of maps setting"), entry);
037        List<Map<String, String>> orig = setting.getValue();
038
039        dataKeys = new ArrayList<>();
040        dataValues = new ArrayList<>();
041        if (orig != null) {
042            for (Map<String, String> m : orig) {
043                List<String> keys = new ArrayList<>();
044                List<String> values = new ArrayList<>();
045                for (Entry<String, String> e : m.entrySet()) {
046                    keys.add(e.getKey());
047                    values.add(e.getValue());
048                }
049                dataKeys.add(keys);
050                dataValues.add(values);
051            }
052        }
053    }
054
055    @Override
056    public List<Map<String, String>> getData() {
057        List<Map<String, String>> data = new ArrayList<>();
058        for (int i = 0; i < dataKeys.size(); ++i) {
059            Map<String, String> m = new LinkedHashMap<>();
060            for (int j = 0; j < dataKeys.get(i).size(); ++j) {
061                m.put(dataKeys.get(i).get(j), dataValues.get(i).get(j));
062            }
063            data.add(m);
064        }
065        return data;
066    }
067
068    @Override
069    protected final JPanel build() {
070        table.getTableHeader().getColumnModel().getColumn(0).setHeaderValue(tr("Key"));
071        table.getTableHeader().getColumnModel().getColumn(1).setHeaderValue(tr("Value"));
072        return super.build();
073    }
074
075    private class EntryListModel extends AbstractEntryListModel {
076
077        @Override
078        public String getElementAt(int index) {
079            return tr("Entry {0}", index+1);
080        }
081
082        @Override
083        public int getSize() {
084            return dataKeys.size();
085        }
086
087        @Override
088        public void add() {
089            dataKeys.add(new ArrayList<String>());
090            dataValues.add(new ArrayList<String>());
091            fireIntervalAdded(this, getSize() - 1, getSize() - 1);
092        }
093
094        @Override
095        public void remove(int idx) {
096            dataKeys.remove(idx);
097            dataValues.remove(idx);
098            fireIntervalRemoved(this, idx, idx);
099        }
100    }
101
102    private class MapTableModel extends AbstractTableModel {
103
104        private List<List<String>> data() {
105            return entryIdx == null ? Collections.<List<String>>emptyList() : Arrays.asList(dataKeys.get(entryIdx), dataValues.get(entryIdx));
106        }
107
108        private int size() {
109            return entryIdx == null ? 0 : dataKeys.get(entryIdx).size();
110        }
111
112        @Override
113        public int getRowCount() {
114            return entryIdx == null ? 0 : size() + 1;
115        }
116
117        @Override
118        public int getColumnCount() {
119            return 2;
120        }
121
122        @Override
123        public String getColumnName(int column) {
124            return column == 0 ? tr("Key") : tr("Value");
125        }
126
127        @Override
128        public Object getValueAt(int row, int column) {
129            return size() == row ? "" : data().get(column).get(row);
130        }
131
132        @Override
133        public void setValueAt(Object o, int row, int column) {
134            String s = (String) o;
135            if (row == size()) {
136                data().get(0).add("");
137                data().get(1).add("");
138                data().get(column).set(row, s);
139                fireTableRowsInserted(row+1, row+1);
140            } else {
141                data().get(column).set(row, s);
142                fireTableCellUpdated(row, column);
143            }
144        }
145
146        @Override
147        public boolean isCellEditable(int row, int column) {
148            return true;
149        }
150    }
151
152    @Override
153    protected final AbstractEntryListModel newEntryListModel() {
154        return new EntryListModel();
155    }
156
157    @Override
158    protected final AbstractTableModel newTableModel() {
159        return new MapTableModel();
160    }
161}