iconlistrenderer.java

JGraph扩展应用。自定义Renderer,自定义视图View实现自定义工作流控件

/**
 * 
 */
package flow.graph.gui.tree;

/**
 * @author Administrator
 *
 */
import java.awt.Component;

import javax.swing.DefaultListCellRenderer;
import javax.swing.Icon;
import javax.swing.JList;

class IconListRenderer extends DefaultListCellRenderer {
	Icon	defaultIcon;
		
	public Component getListCellRendererComponent(
		 JList list,
		 Object value,
		 int index,
		 boolean isSelected,
		 boolean cellHasFocus)
	 {
		super.getListCellRendererComponent(list,value,index,isSelected,cellHasFocus);
		if (value instanceof IconItem) {
			setIcon(((IconItem)value).getIcon());	
		} else if (defaultIcon != null) {
			setIcon(defaultIcon);
		}
		return this;
	 }
		 
	 public void setDefaultIcon(Icon defaultIcon) {
		this.defaultIcon = defaultIcon;
	 }
}