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.Dimension;
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.gui.util.GuiHelper;
016import org.openstreetmap.josm.tools.ImageProvider;
017
018/**
019 * This is the {@link TableCellRenderer} used in {@link SelectionTable}.
020 *
021 */
022public class SelectionTableCellRenderer extends JLabel implements TableCellRenderer {
023    public static final Color BGCOLOR_DOUBLE_ENTRY = new Color(254, 226, 214);
024    public static final Color BGCOLOR_SINGLE_ENTRY = new Color(235, 255, 177);
025
026    /**
027     * reference to the member table model; required, in order to check whether a
028     * selected primitive is already used in the member list of the currently edited
029     * relation
030     */
031    private MemberTableModel model;
032
033    /**
034     * constructor
035     */
036    public SelectionTableCellRenderer() {
037        setIcon(null);
038        setOpaque(true);
039    }
040
041    /**
042     * reset the renderer
043     */
044    protected void reset() {
045        setBackground(UIManager.getColor("Table.background"));
046        setForeground(UIManager.getColor("Table.foreground"));
047        setBorder(null);
048        setIcon(null);
049        setToolTipText(null);
050    }
051
052    protected void renderBackground(OsmPrimitive primitive) {
053        Color bgc = UIManager.getColor("Table.background");
054        if (primitive != null && model != null && model.getNumMembersWithPrimitive(primitive) == 1) {
055            bgc = BGCOLOR_SINGLE_ENTRY;
056        } else if (primitive != null && model != null && model.getNumMembersWithPrimitive(primitive) > 1) {
057            bgc = BGCOLOR_DOUBLE_ENTRY;
058        }
059        GuiHelper.setBackgroundReadable(this, bgc);
060    }
061
062    protected void renderPrimitive(OsmPrimitive primitive, Dimension cellSize) {
063        int size = Math.min(cellSize.width, cellSize.height);
064        setIcon(ImageProvider.getPadded(primitive, new Dimension(size, size)));
065        setText(primitive.getDisplayName(DefaultNameFormatter.getInstance()));
066        setToolTipText(DefaultNameFormatter.getInstance().buildDefaultToolTip(primitive));
067    }
068
069    @Override
070    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
071            int row, int column) {
072
073        reset();
074        if (value == null)
075            return this;
076
077        Dimension cellSize = table.getCellRect(row, column, false).getSize();
078
079        renderBackground((OsmPrimitive) value);
080        renderPrimitive((OsmPrimitive) value, cellSize);
081        return this;
082    }
083
084    public void setMemberTableModel(MemberTableModel model) {
085        this.model = model;
086    }
087}