001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.dialogs.relation;
003
004import java.awt.Color;
005import java.awt.Component;
006import java.awt.Rectangle;
007
008import javax.swing.JLabel;
009import javax.swing.JTable;
010import javax.swing.UIManager;
011import javax.swing.table.TableCellRenderer;
012
013import org.openstreetmap.josm.data.osm.OsmPrimitive;
014import org.openstreetmap.josm.gui.DefaultNameFormatter;
015import org.openstreetmap.josm.tools.ImageProvider;
016
017/**
018 * This is the {@link TableCellRenderer} used in {@link SelectionTable}.
019 *
020 */
021public class SelectionTableCellRenderer extends JLabel implements TableCellRenderer {
022    public static final Color BGCOLOR_DOUBLE_ENTRY = new Color(254, 226, 214);
023    public static final Color BGCOLOR_SINGLE_ENTRY = new Color(235, 255, 177);
024
025    /**
026     * reference to the member table model; required, in order to check whether a
027     * selected primitive is already used in the member list of the currently edited
028     * relation
029     */
030    private MemberTableModel model;
031
032    /**
033     * constructor
034     */
035    public SelectionTableCellRenderer() {
036        setIcon(null);
037        setOpaque(true);
038    }
039
040    /**
041     * reset the renderer
042     */
043    protected void reset() {
044        setBackground(UIManager.getColor("Table.background"));
045        setForeground(UIManager.getColor("Table.foreground"));
046        setBorder(null);
047        setIcon(null);
048        setToolTipText(null);
049    }
050
051    protected void renderBackground(OsmPrimitive primitive) {
052        Color bgc = UIManager.getColor("Table.background");
053        if (primitive != null && model != null && model.getNumMembersWithPrimitive(primitive) == 1) {
054            bgc = BGCOLOR_SINGLE_ENTRY;
055        } else if (primitive != null && model != null && model.getNumMembersWithPrimitive(primitive) > 1) {
056            bgc = BGCOLOR_DOUBLE_ENTRY;
057        }
058        setBackground(bgc);
059    }
060
061    protected void renderPrimitive(OsmPrimitive primitive, Rectangle cellSize) {
062        setIcon(ImageProvider.getPadded(primitive, cellSize));
063        setText(primitive.getDisplayName(DefaultNameFormatter.getInstance()));
064        setToolTipText(DefaultNameFormatter.getInstance().buildDefaultToolTip(primitive));
065    }
066
067    @Override
068    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
069            int row, int column) {
070
071        reset();
072        if (value == null)
073            return this;
074
075        Rectangle cellSize = table.getCellRect(row, column, false);
076
077        renderBackground((OsmPrimitive) value);
078        renderPrimitive((OsmPrimitive) value, cellSize);
079        return this;
080    }
081
082    public void setMemberTableModel(MemberTableModel model) {
083        this.model = model;
084    }
085}