001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.history;
003
004import java.awt.Rectangle;
005
006import javax.swing.JTable;
007import javax.swing.ListSelectionModel;
008import javax.swing.event.TableModelEvent;
009import javax.swing.event.TableModelListener;
010
011/**
012 * RelationMemberListViewer is a UI component which displays the  list of relation members of two
013 * version of a {@link org.openstreetmap.josm.data.osm.Relation} in a {@link org.openstreetmap.josm.data.osm.history.History}.
014 *
015 * <ul>
016 *   <li>on the left, it displays the list of relation members for the version at {@link PointInTimeType#REFERENCE_POINT_IN_TIME}</li>
017 *   <li>on the right, it displays the list of relation members for the version at {@link PointInTimeType#CURRENT_POINT_IN_TIME}</li>
018 * </ul>
019 * @since 1709
020 */
021public class RelationMemberListViewer extends HistoryViewerPanel {
022
023    protected static class MemberModelChanged implements TableModelListener {
024        private final JTable table;
025
026        protected MemberModelChanged(JTable table) {
027            this.table = table;
028        }
029
030        @Override
031        public void tableChanged(TableModelEvent e) {
032            Rectangle rect = table.getCellRect(((DiffTableModel) e.getSource()).getFirstChange(), 0, true);
033            table.scrollRectToVisible(rect);
034        }
035    }
036
037    @Override
038    protected JTable buildReferenceTable() {
039        return buildTable(PointInTimeType.REFERENCE_POINT_IN_TIME, "table.referencememberlisttable");
040    }
041
042    @Override
043    protected JTable buildCurrentTable() {
044        return buildTable(PointInTimeType.CURRENT_POINT_IN_TIME, "table.currentmemberlisttable");
045    }
046
047    private JTable buildTable(PointInTimeType pointInTimeType, String name) {
048        JTable table = new JTable(
049                model.getRelationMemberTableModel(pointInTimeType),
050                new RelationMemberTableColumnModel());
051        table.setName(name);
052        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
053        selectionSynchronizer.participateInSynchronizedSelection(table.getSelectionModel());
054        table.getModel().addTableModelListener(new MemberModelChanged(table));
055        return table;
056    }
057
058    /**
059     * Constructs a new {@code RelationMemberListViewer}.
060     * @param model The history browsing model
061     */
062    public RelationMemberListViewer(HistoryBrowserModel model) {
063        super(model);
064    }
065}