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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.

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package org.optaplanner.examples.common.swingui.components;

import java.awt.Component;

import javax.swing.JComboBox;
import javax.swing.JList;
import javax.swing.ListCellRenderer;

/**
 * Display the user-friendly {@link Labeled#getLabel()} instead of the developer-friendly {@link Object#toString()}.
 */
public class LabeledComboBoxRenderer implements ListCellRenderer {

    public static void applyToComboBox(JComboBox comboBox) {
        comboBox.setRenderer(new LabeledComboBoxRenderer(comboBox.getRenderer()));
    }

    private final ListCellRenderer originalListCellRenderer;

    public LabeledComboBoxRenderer(ListCellRenderer originalListCellRenderer) {
        this.originalListCellRenderer = originalListCellRenderer;
    }

    @Override
    public Component getListCellRendererComponent(JList list, Object value, int index,
            boolean isSelected, boolean cellHasFocus) {
        String label = (value == null) ? "" : ((Labeled) value).getLabel();
        return originalListCellRenderer.getListCellRendererComponent(list, label, index, isSelected, cellHasFocus);
    }

}