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package javax.swing;
import javax.swing.event.*;
import java.awt.*;
import javax.swing.plaf.*;
import java.util.*;
public class JList extends JComponent implements Scrollable
{
Color select_back, select_fore;
ListCellRenderer render;
int visibles = 8;
ListModel model;
ListSelectionModel sel_model;
JList()
{
init();
}
JList(Object[] listData)
{
init();
setListData(listData);
}
JList(Vector listData)
{
init();
setListData(listData);
}
JList(ListModel listData)
{
init();
setModel(listData);
}
void init()
{
render = new DefaultCellRenderer();
sel_model = new DefaultListSelectionModel();
setModel(new DefaultListModel());
select_back = new Color(0,0,255);
select_fore = new Color(255,255,255);
updateUI();
}
public int getVisibleRowCount()
{ return visibles; }
public void setVisibleRowCount(int visibleRowCount)
{
visibles = visibleRowCount;
invalidate();
repaint();
}
void addListSelectionListener(ListSelectionListener listener)
{ sel_model.addListSelectionListener(listener); }
void removeListSelectionListener(ListSelectionListener listener)
{ sel_model.removeListSelectionListener(listener); }
void setSelectionMode(int a)
{ sel_model.setSelectionMode(a); }
void setSelectedIndex(int a)
{ sel_model.setSelectionInterval(a,a); }
int getSelectedIndex()
{ return sel_model.getMinSelectionIndex(); }
Object getSelectedValue()
{
int index = getSelectedIndex();
if (index == -1)
return null;
return getModel().getElementAt(index);
}
Color getSelectionBackground()
{ return select_back; }
Color getSelectionForeground()
{ return select_fore; }
public void setListData(final Object[] listData)
{
class AL extends AbstractListModel
{
public int getSize() { return listData.length; }
public Object getElementAt(int i) { return listData[i]; }
};
setModel (new AL());
}
public void setListData(final Vector listData)
{
class AL extends AbstractListModel
{
public int getSize() { return listData.size(); }
public Object getElementAt(int i) { return listData.elementAt(i); }
};
setModel (new AL());
}
public ListCellRenderer getCellRenderer()
{ return render; }
public void setCellRenderer(ListCellRenderer cellRenderer)
{
render = cellRenderer;
invalidate();
repaint();
}
public void setModel(ListModel model)
{
ListDataListener l = new ListDataListener()
{
public void intervalAdded(ListDataEvent e) {
repaint();
}
public void intervalRemoved(ListDataEvent e) {
repaint();
}
public void contentsChanged(ListDataEvent e) {
repaint();
}
};
this.model = model;
model.addListDataListener(l);
}
public ListModel getModel()
{ return model; }
public ListUI getUI()
{ return (ListUI) ui; }
public void setUI(ListUI ui)
{ super.setUI(ui); }
public void updateUI()
{
setUI((ListUI)UIManager.getUI(this));
}
public String getUIClassID()
{
return "JList";
}
AccessibleContext getAccessibleContext()
{
return null;
}
public Dimension getPreferredScrollableViewportSize()
{
return null;
}
public int getScrollableUnitIncrement(Rectangle visibleRect,
int orientation,
int direction)
{
return 1;
}
public int getScrollableBlockIncrement(Rectangle visibleRect,
int orientation,
int direction)
{
return 1;
}
public boolean getScrollableTracksViewportWidth()
{
return false;
}
public boolean getScrollableTracksViewportHeight()
{
return false;
}
}
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