package coolbaby6;

import javax.swing.ImageIcon;

import javax.swing.JPanel;
import javax.swing.JButton;
import java.awt.Color;
import java.awt.Rectangle;
import javax.swing.JLabel;
import java.awt.Dimension;
import java.awt.Font;

public class MemberModel{

 private static final long serialVersionUID = 1L;

 public JButton jButton = null;//显示好友头像；

 public JPanel jPanel = new JPanel();//模板容器；

 private JLabel lb_nickName = null;//显示昵称；

 private int pic;

 private String nickname = null;

 private JLabel lb_mood = null;//显示心情；

 
 public MemberModel(int pic, String nickname, int len) {
 super();
 this.pic = pic;//头像编（有多种方法可以实现，这种最简单）
 this.nickname = nickname;//昵称；
 initialize();
 }

 
 private void initialize() {
 lb_mood = new JLabel();
 lb_mood.setBounds(new Rectangle(51, 30, 131, 20));
 lb_mood.setFont(new Font("Dialog", Font.PLAIN, 12));
 lb_mood.setText("世界上最遥远的距离不是生与死,而是我站在你面前你却不知道我爱你!");
 lb_mood.addMouseListener(new java.awt.event.MouseAdapter() {
  public void mouseEntered(java.awt.event.MouseEvent e) {
  exchangeEnter();
  lb_mood.setToolTipText(lb_mood.getText());
  }
  public void mouseExited(java.awt.event.MouseEvent e) {
  exchangeExited();
  }

 });
 lb_nickName = new JLabel();
 lb_nickName.setBounds(new Rectangle(52, 10, 80, 20));
 lb_nickName.setFont(new Font("Dialog", Font.BOLD, 14));
 lb_nickName.setText(nickname);
 jPanel.setSize(new Dimension(185, 60));
 jPanel.setLayout(null);
 jPanel.add(getJButton(), null);
 jPanel.add(lb_nickName, null);
 jPanel.add(lb_mood, null);
 jPanel.addMouseListener(new java.awt.event.MouseAdapter() { 
  public void mouseExited(java.awt.event.MouseEvent e) {
  exchangeExited();//鼠标移出模板区，改变背景颜色；
  }

  public void mouseEntered(java.awt.event.MouseEvent e) {
  exchangeEnter();//鼠标移进模板区，改变背景颜色；
  }
 });
 }

 private void exchangeEnter() {
 jPanel.setBackground(new Color(192,224,248));
 }

 private void exchangeExited() {
 jPanel.setBackground(null);
 }

 
 private JButton getJButton() {
 if (jButton == null) {
  jButton = new JButton();
  jButton.setBounds(new Rectangle(8, 10, 40, 40));
  jButton.setBackground(new Color(236, 255, 236));
  jButton.setIcon(new ImageIcon(pic + ".jpg"));
  jButton.addMouseListener(new java.awt.event.MouseAdapter() { 
  public void mouseExited(java.awt.event.MouseEvent e) {  
   exchangeExited();//鼠标移出模板区，改变背景颜色；
  } 
  public void mouseEntered(java.awt.event.MouseEvent e) {  
   exchangeEnter();//鼠标移进模板区，改变背景颜色；
  }
  });
 
 }
 return jButton;
 }
}

package coolbaby6;

import javax.swing.BorderFactory;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;

public class TestPane extends JPanel {

 private static final long serialVersionUID = 1L;
 private JLabel jLabel = null;
 private JLabel jLabel1 = null;
 private JLabel jLabel11 = null;
 private JLabel jLabel12 = null;
 private int clickF=0;
 private int clickB=0;
 
 public TestPane() {
 super();
 initialize();
 }

 private void initialize() {
  
 jLabel12 = new JLabel();
 jLabel12.setIcon(new ImageIcon("img/bg.jpg"));
 jLabel12.add(new MemberModel(3,"CoolBabY3",200).jPanel);
 jLabel12.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
 
 jLabel11 = new JLabel();
 jLabel11.setIcon(new ImageIcon("img/bg.jpg"));
 jLabel11.add(new MemberModel(2,"CoolBabY2",200).jPanel);
 jLabel11.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
 
 jLabel1 = new JLabel();
 jLabel1.setIcon(new ImageIcon("img/bg.jpg"));
 jLabel1.add(new MemberModel(1,"CoolBabY1",200).jPanel);
 jLabel1.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
 
 jLabel = new JLabel();
 jLabel.setText("我的好友");
 jLabel.setIcon(new ImageIcon("img/ico.jpg"));
 jLabel.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
 
 jLabel.addMouseListener(new java.awt.event.MouseAdapter() {
  public void mouseClicked(java.awt.event.MouseEvent e) {
  clickF+=1;
  if(clickF%2==1){
   jLabel1.setVisible(false);
   jLabel11.setVisible(false);
   jLabel12.setVisible(false);
   jLabel.setIcon(new ImageIcon("img/ico2.jpg"));
   update();
  }else{
   jLabel1.setVisible(true);
   jLabel11.setVisible(true);
   jLabel12.setVisible(true); 
   jLabel.setIcon(new ImageIcon("img/ico.jpg"));
   update();
  }  
  }
 });
 this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
 this.setSize(200, 408);
 this.setLocation(20, 5);
 this.add(jLabel, null);
 this.add(jLabel1, null);
 this.add(jLabel11, null);
 this.add(jLabel12, null);
 addJLabel();
 }
 
 private void update(){//更新UI界面；
 this.updateUI();
 }
 
 private void clickBlack2(JLabel []jb){//点击标签，将后面的标签全部设为不可视；
 for(int i=1;i<jb.length;i++){
  try{
  jb[i].setVisible(false);
  }catch(Exception e){
  e.printStackTrace();
  }
 } 
 update();
 }
 private void clickBlack(JLabel []jb){//点击标签，将后面的标签全部设为可视；
 for(int i=1;i<jb.length;i++){
  try{
  jb[i].setVisible(true);
  }catch(Exception e){
  e.printStackTrace();
  }
  
 } 
 update();
 }

 private void addJLabel(){//添加黑名单的内容；
 final JLabel []jb=new JLabel[7];
 jb[0] = new JLabel();
 jb[0].setText("黑名单");
 jb[0].setIcon(new ImageIcon("img/ico2.jpg"));
 jb[0].setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
 jb[0].addMouseListener(new java.awt.event.MouseAdapter() {
  public void mouseClicked(java.awt.event.MouseEvent e) {
  
  clickB+=1;
  if(clickB%2==1){
   clickBlack(jb);
   jb[0].setIcon(new ImageIcon("img/ico.jpg"));
  }else{
   clickBlack2(jb);
   jb[0].setIcon(new ImageIcon("img/ico2.jpg"));
  }
  
  }
 });
 this.add(jb[0],null);
 for(int i=1;i<jb.length;i++){
  jb[i]=new JLabel();
  jb[i].setIcon(new ImageIcon("img/bg.jpg"));
  jb[i].setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
  jb[i].add(new MemberModel((i+3),"CoolBabY"+(i+3),200).jPanel);
  jb[i].setVisible(false);
  this.add(jb[i],null);
 }
 
 }

}

package coolbaby6;

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ScrollPaneConstants;
import javax.swing.SwingUtilities;

public class TestFrame {

 private JFrame jFrame = null;

 private JPanel jContentPane = null;
 
 private JScrollPane scrollPane=null;

 public static void main(String[] args) {
 SwingUtilities.invokeLater(new Runnable() {
  public void run() {
  TestFrame application = new TestFrame();
  application.getJFrame().setVisible(true);
  }
 });
 }

 private JFrame getJFrame() {
 if (jFrame == null) {
  jFrame = new JFrame();
  jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  jFrame.setSize(230, 700);
  jFrame.setTitle("模拟实现QQ面板功能");
  jFrame.setContentPane(getJContentPane());
 }
 return jFrame;
 }
 
 
 private JScrollPane getScrollPane(){//给添加好友的容器JPanel添加滚动条；
 if(scrollPane==null){
  scrollPane=new JScrollPane(new TestPane());
  //scrollPane.setBounds(20,5, -1, 600);
  scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER );//不显示水平滚动条；
 }
 return scrollPane;
 }

 
 private JPanel getJContentPane() {//实例化底层的容器JPanel；
 if (jContentPane == null) {
  jContentPane = new JPanel();
  jContentPane.setLayout(new BorderLayout());
  jContentPane.add(getScrollPane(), BorderLayout.CENTER);
 }
 return jContentPane;
 }
}