自己实现的JList无法正常显示

ogiso_pest 2011-05-20 09:08:18

我想实现如下效果的JList

MyListItem 就是MyListRenderer里JLabel的text和icon，还有checkbox的值

private String text ;
private boolean selected ;
private Icon icon ;

以下是自己定义的ListCellRenderer

public class MyListRenderer extends JLabel implements MouseListener,

		ListCellRenderer {



	private JList list = null;

	private JCheckBox checkBox = null;

	private JLabel label = null;



	public MyListRenderer(JList list) {



		this.list = list;

		checkBox = new JCheckBox();

		label = new JLabel();

		add(checkBox);

		add(label);



	}



	@Override

	public Component getListCellRendererComponent(JList list, Object value,

			int index, boolean isSelected, boolean cellHasFocus) {

		// TODO Auto-generated method stub

		MyListItem item = (MyListItem)value;

		

		label.setText(item.getItemText());

		label.setIcon(item.getIconIterm());

		checkBox.setSelected(item.getSelectEnable());

		

		return this;

	}



	@Override

	public void mouseClicked(MouseEvent e) {

		// TODO Auto-generated method stub

		int index = list.locationToIndex(e.getPoint());

		MyListItem item = (MyListItem) list.getModel().getElementAt(index);

	    if (((SelectEnable) item).getSelectEnable()) {

	    	System.out.println(item.getItemText());

	    }

	}



	@Override

	public void mouseEntered(MouseEvent arg0) {

		// TODO Auto-generated method stub



	}



	@Override

	public void mouseExited(MouseEvent arg0) {

		// TODO Auto-generated method stub



	}



	@Override

	public void mousePressed(MouseEvent arg0) {

		// TODO Auto-generated method stub



	}



	@Override

	public void mouseReleased(MouseEvent arg0) {

		// TODO Auto-generated method stub



	}



}

显示

Icon icon = new ImageIcon("res/1.JPG");

		MyListItem[] items = { new MyListItem("Astart"),

		           new MyListItem("B-BIX", true, icon),

		           new MyListItem("郁闷", false), 

		           new MyListItem("abc", true),

		           new MyListItem("12867831", false, icon),

		};



		JList jList = new JList(items);

		jList.setCellRenderer(new MyListRenderer(jList));

		

		JFrame frame = new JFrame();

		frame.add(jList);

		frame.setSize(200, 200);

		frame.setVisible(true);

...全文