001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.history;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005
006import java.awt.Component;
007
008import javax.swing.JLabel;
009import javax.swing.JTable;
010import javax.swing.table.TableCellRenderer;
011
012import org.openstreetmap.josm.data.osm.RelationMemberData;
013import org.openstreetmap.josm.gui.history.TwoColumnDiff.Item;
014import org.openstreetmap.josm.gui.util.GuiHelper;
015import org.openstreetmap.josm.tools.ImageProvider;
016
017/**
018 * The {@link TableCellRenderer} for a list of relation members in {@link HistoryBrowser}.
019 * @since 1709
020 */
021public class RelationMemberListTableCellRenderer extends JLabel implements TableCellRenderer {
022
023    /**
024     * Constructs a new {@code RelationMemberListTableCellRenderer}.
025     */
026    public RelationMemberListTableCellRenderer() {
027        setOpaque(true);
028    }
029
030    protected void renderIcon(RelationMemberData member) {
031        if (member == null) {
032            setIcon(null);
033        } else {
034            setIcon(ImageProvider.get(member.getMemberType()));
035        }
036    }
037
038    protected void renderRole(Item diffItem) {
039        RelationMemberData member = (RelationMemberData) diffItem.value;
040        String text = member == null ? "" : member.getRole();
041        setText(text);
042        setToolTipText(text);
043        GuiHelper.setBackgroundReadable(this, diffItem.state.getColor());
044    }
045
046    protected void renderPrimitive(Item diffItem) {
047        String text = "";
048        RelationMemberData member = (RelationMemberData) diffItem.value;
049        if (member != null) {
050            switch(member.getMemberType()) {
051            case NODE: text = tr("Node {0}", member.getMemberId()); break;
052            case WAY: text = tr("Way {0}", member.getMemberId()); break;
053            case RELATION: text = tr("Relation {0}", member.getMemberId()); break;
054            default: throw new AssertionError();
055            }
056        }
057        setText(text);
058        setToolTipText(text);
059        GuiHelper.setBackgroundReadable(this, diffItem.state.getColor());
060    }
061
062    // Warning: The model pads with null-rows to match the size of the opposite table. 'value' could be null
063    @Override
064    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
065            int row, int column) {
066
067        if (value == null) return this;
068        Item member = (TwoColumnDiff.Item) value;
069        renderIcon((RelationMemberData) member.value);
070        switch(column) {
071        case 0:
072            renderRole(member);
073            break;
074        case 1:
075            renderPrimitive(member);
076            break;
077        default: // Do nothing
078        }
079
080        return this;
081    }
082}