NosyToolTipHighlighter.java

package jxtreetable.own;

import java.awt.Component;
import java.math.BigDecimal;

import javax.swing.JComponent;

import org.jdesktop.swingx.decorator.AbstractHighlighter;
import org.jdesktop.swingx.decorator.ComponentAdapter;
import org.jdesktop.swingx.decorator.HighlightPredicate;

public class NosyToolTipHighlighter extends AbstractHighlighter {

    public NosyToolTipHighlighter() {
        super(HighlightPredicate.ALWAYS);
    }

    @Override
    protected Component doHighlight(Component component, ComponentAdapter adapter) {
        String tooltip;
        if (0 == adapter.column) {
            DisplayedObject value = (DisplayedObject) adapter.getValue();
            tooltip = value.hiddenTooltip();
        } else {
            BigDecimal value = (BigDecimal) adapter.getValue();
            if( null == value){
                tooltip = "no tooltip for you";
            }else {
                tooltip = "bd: " + value.toPlainString();
            }
        }
        ((JComponent) component).setToolTipText(tooltip);
        return component;
    }
}