?? jawtlist.java
字號:
import java.awt.*;
import java.awt.event.*;
import java.util.*;
//swing classes
import com.sun.java.swing.text.*;
import com.sun.java.swing.*;
import com.sun.java.swing.event.*;
import com.sun.java.swing.tree.*;
import com.sun.java.swing.border.*;
//this is a simple adapter class to
//convert List awt methods to Swing methods
public class JawtList extends JScrollPane
implements ListSelectionListener, awtList
{
private JList listWindow;
private JListData listContents;
//-----------------------------------------
public JawtList(int rows)
{
listContents = new JListData();
listWindow = new JList(listContents);
listWindow.setPrototypeCellValue("Abcdefg Hijkmnop");
getViewport().add(listWindow);
}
//-----------------------------------------
public void add(String s)
{
listContents.addElement(s);
}
//-----------------------------------------
public void remove(String s)
{
listContents.removeElement(s);
}
//-----------------------------------------
public void clear()
{
listContents.clear();
}
//-----------------------------------------
public String[] getSelectedItems()
{
Object[] obj = listWindow.getSelectedValues();
String[] s = new String[obj.length];
for (int i =0; i<obj.length; i++)
s[i] = obj[i].toString();
return s;
}
//-----------------------------------------
public void valueChanged(ListSelectionEvent e)
{
}
}
// =========================================
class JListData extends AbstractListModel
{
private Vector data;
//-----------------------------------------
public JListData()
{
data = new Vector();
}
//-----------------------------------------
public int getSize()
{
return data.size();
}
//-----------------------------------------
public Object getElementAt(int index)
{
return data.elementAt(index);
}
//-----------------------------------------
public void addElement(String s)
{
data.addElement(s);
fireIntervalAdded(this, data.size()-1, data.size());
}
//-----------------------------------------
public void removeElement(String s)
{
data.removeElement(s);
fireIntervalRemoved(this, 0, data.size());
}
//-----------------------------------------
public void clear()
{
int size= data.size();
data = new Vector();
fireIntervalRemoved(this, 0, size);
}
}
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