package org.catacomb.druid.swing;
   
   import java.awt.Color;
   import java.awt.Dimension;
   import java.awt.Font;
   import java.awt.event.MouseEvent;
   import java.awt.event.MouseListener;
   import java.util.HashSet;
   
  import javax.swing.DefaultListSelectionModel;
  import javax.swing.JList;
  import javax.swing.event.ListSelectionEvent;
  import javax.swing.event.ListSelectionListener;
  
  import org.catacomb.druid.event.LabelActor;
  import org.catacomb.interlish.interact.ClickListener;
  import org.catacomb.interlish.interact.DComponent;
  import org.catacomb.util.MouseUtil;
  
  
  public class DList extends JList implements DComponent, ListSelectionListener, MouseListener {
  
      static final long serialVersionUID = 1001;
      static Font plainfont;
      static Font boldfont;
  
      public LabelActor labelActor;
      Object bufSel;
  
      boolean dropEvents;
      ClickListener clickListener;
      String[] tooltips;
      int nline = 3;
      boolean multiple = false;
  
      HashSet<Object> siHS = new HashSet<Object>();
  
  
      public DList() {
          super();
          dropEvents = false;
          setPlainFont();
          addListSelectionListener(this);
      }
  
  
      public void setTooltip(String s) {
          setToolTipText(s);
      }
  
      public void setBg(Color c) {
          setBackground(c);
      }
  
  
      public void clearBufferedSelection() {
          bufSel = null;
      }
  
  
      public void setMultiple() {
          multiple = true;
          super.setSelectionMode(DefaultListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
      }
  
  
  
      public void setTooltips(String[] sa) {
          tooltips = sa;
      }
  
  
      public void setPlainFont() {
          if (plainfont == null) {
              plainfont = new Font("sansserif", Font.PLAIN, 12);
          }
  
          setFont(plainfont);
      }
  
  
      public String getToolTipText(MouseEvent me) {
          int idx = locationToIndex(me.getPoint());
          String ret = null;
          if (idx >= 0 && tooltips != null && tooltips.length > idx) {
              ret = tooltips[idx];
          }
          if (ret == null) {
              ret = "";
          }
          return ret;
      }
  
  
  
      public void setLabelActor(LabelActor la) {
          labelActor = la;
      }
  
 
     public void valueChanged(ListSelectionEvent lse) {
         if (dropEvents) {
 
         } else if (lse != null && lse.getValueIsAdjusting()) {
 
         } else {
             if (multiple) {
                 Object onew = null;
                 Object ofirst = null;
                 for (Object obj : getSelectedValues()) {
                     if (siHS.contains(obj)) {
                         if (ofirst == null) {
                             ofirst = obj;
                         }
                     } else {
                         if (onew == null) {
                             onew = obj;
                         }
                     }
                 }
                 siHS.clear();
                 for (Object obj : getSelectedValues()) {
                     siHS.add(obj);
                 }
                 if (onew != null) {
                     bufSel = onew;
                     labelActor.labelAction("selected", true);
                 } else if (ofirst != null) {
                     bufSel = ofirst;
                     labelActor.labelAction("selected", true);
                 } else {
                     bufSel = null;
                     labelActor.labelAction("selected", false);
                 }
 
 
             } else {
                 Object obj = getSelectedValue();
                 //   E.info("sel " + obj + " " + bufSel + " " + (obj == bufSel));
                 if (obj != null && obj != bufSel && labelActor != null) {
                     bufSel = obj;
                     labelActor.labelAction("selected", true);
 
                 }
             }
         }
 
     }
 
 
     public void selectAt(int i) {
         dropEvents = true;
         if (multiple) {
             addSelectionInterval(i, i);
 
         } else {
             if (i >= 0) {
                 setSelectedIndex(i);
             } else {
                 bufSel = null;
                 clearSelection();
             }
         }
         dropEvents = false;
     }
 
 
     public void setClickListener(ClickListener cl) {
         clickListener = cl;
         addMouseListener(this);
     }
 
 
     public void mouseClicked(MouseEvent e) {
         if (clickListener != null) {
             clickListener.pointClicked(e.getX(), e.getY(), MouseUtil.getButton(e));
         }
 
     }
 
 
     public void mousePressed(MouseEvent e) {
 
     }
 
 
     public void mouseReleased(MouseEvent e) {
     }
 
 
     public void mouseEntered(MouseEvent e) {
     }
 
 
     public void mouseExited(MouseEvent e) {
     }
 
 
     public void addLine() {
         nline += 1;
         setPreferredSize(new Dimension(100, 20 * nline));
     }
 
 
     public void removeLine() {
         if (nline > 3) {
             nline -= 1;
         }
         setPreferredSize(new Dimension(100, 20 * nline));
     }
 
 
     public void ensureHasSelection() {
         if (isSelectionEmpty() && getModel().getSize() > 0) {
             selectAt(0);
             valueChanged(null);
         }
     }
 
     public int listSize() {
         return getModel().getSize();
     }
 
 
     public void setToggleAction() {
         setSelectionModel(new ToggleSelectionModel());
     }
 
 
     /*
      *
      * public void setBoldFont() { if (boldfont == null) { boldfont = new Font
      * ("sansserif", Font.BOLD, 12); } setFont(boldfont); }
      */
 }