mytreecellrenderer.java

用java开发的QQ管理系统

package com.zlf.qqclient.mainframe.tree;
/**
 * MyTreeCellRenderer
 * @author zlf
 */
import java.awt.Component;

import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;

import com.zlf.qqclient.utils.QQUtils;

public class MyTreeCellRenderer extends DefaultTreeCellRenderer {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	public Component getTreeCellRendererComponent(JTree tree, Object value,
			boolean sel, boolean expanded, boolean leaf, int row,
			boolean hasFocus) {
		super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf,
				row, hasFocus);
		this.setOpenIcon(QQUtils.getTotalIcon("expaned.gif"));
		this.setClosedIcon(QQUtils.getTotalIcon("collapsed.gif"));
		if (value != null) {
			DefaultMutableTreeNode dmtd = (DefaultMutableTreeNode) value;
			if (dmtd.getUserObject() instanceof User) {
				User user = (User) dmtd.getUserObject();
				// 去掉.gif
				//System.out.println(user.getIcon());
				String icon = user.getIcon().substring(
						QQUtils.properties.getProperty("NewFace").length(),
						user.getIcon().length() - 4);
				if (user.isOnline() == 0) {
					// 不在线状态
					this.setIcon(QQUtils.getNewfaceIcon("gray/"+icon+"_m_gray.gif"));
				} else {
					// 在线状态
					this.setIcon(QQUtils.getNewfaceIcon(icon+"_m.gif"));
					
					
				}
				this.setText(user.getName());
			} else if (dmtd.getUserObject() instanceof Department) {
				Department dept = (Department) dmtd.getUserObject();
				this.setText(dept.getDeptName());
			}
		}

		return this;
	}

}