/*

  * Created on Aug 7, 2007 by wyatt

  */

 package org.homeunix.thecave.buddi.view.swing;

 import java.awt.Component;

 import javax.swing.DefaultListCellRenderer;

 import javax.swing.JComponent;

 import javax.swing.JList;

 import org.homeunix.thecave.buddi.util.Formatter;

 public class MaxLengthListCellRenderer extends DefaultListCellRenderer {

         public static final long serialVersionUID = 0;

         private final JComponent component;

         private int computedLength = -1;

         public MaxLengthListCellRenderer(JComponent component) {

                 this.component = component;

         }

         @Override

         public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {

                 super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);

                 if (value != null){

                         String s = value.toString();

                         if (index == -1 && s.length() > computedLength && component != null && component.getGraphics() != null)

                                 //The width - 55 is obtained by trial and error on the Mac.  In general, the Mac LnF

                                 // has more padding than most others, so this should be more than enough for others.

                                 // This offset prevents the combo box button from interfering with the display

                                 // of oversized values, by making the value wrap at the word level, and remove the

                                 // "..." at the end of long values.

                                 this.setText(Formatter.getStringToLength(s, component.getWidth() - 55, component.getGraphics().getFontMetrics()));

                         else

                                 this.setText(s);

                 }

                 else {

                         this.setText(" ");

                 }

                 return this;

         }

 }