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JTabbedPane关闭选项卡

作者:互联网

JTabbedPane实现关闭选项卡

使用 JTabbedPane 的时候,希望在添加了一个选项卡之后可以将其关闭。
如图,鼠标指针移动到 选项卡1 后显示 X
选项卡窗格
点击 X 后可以将 选项卡1 关闭:
关闭选项卡1后

思路:

  1. 可以在 选项卡标题 处添加两个标签:lab1lab2
  2. lab1 为选项卡的标题。
  3. lab2X,添加鼠标监视器,鼠标点击关闭选项卡。

将上述两标签放入一个 JPanel 子类中

tabPanel.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class tabPanel extends JPanel implements MouseListener {

	private JTabbedPane pane;	// 所在选项卡窗格
	
	private JLabel lab1, lab2;
	
	public tabPanel(String title, JTabbedPane pane) {
		this.pane = pane;
		
		lab1 = new JLabel(title);
		lab1.setFont(new Font("黑体", Font.PLAIN, 23));
		lab1.setHorizontalAlignment(JLabel.LEFT);	//设置文字显示在最左边
		
		lab2 = new JLabel();
		lab2.setFont(new Font("黑体", Font.PLAIN, 23));
		lab2.setHorizontalAlignment(JLabel.RIGHT);	//设置文字显示在最左边
		lab2.addMouseListener(this);
		
		this.setLayout(new GridLayout(1, 2, 10, 0));
		this.add(lab1);
		this.add(lab2);
	}
	
	@Override
	public void mouseClicked(MouseEvent e) {
		// TODO Auto-generated method stub
		int confirm = JOptionPane.showConfirmDialog(this.pane, "确认关闭选项卡", "提示", JOptionPane.YES_NO_OPTION);
		if (confirm == 0) { this.pane.remove(this.pane.indexOfTabComponent(this)); }
	}

	@Override
	public void mouseEntered(MouseEvent e) {
		// TODO Auto-generated method stub
		this.lab2.setText("X");
	}

	@Override
	public void mouseExited(MouseEvent e) {
		// TODO Auto-generated method stub
		this.lab2.setText("");
	}
	
	@Override
	public void mousePressed(MouseEvent e) { }

	@Override
	public void mouseReleased(MouseEvent e) { }
}

创建窗口,添加选项卡窗格 pane,将 pane 作为参数传入 tabPanel 对象。

MainView.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MainView extends JFrame implements ActionListener {

	JTabbedPane pane;		// 选项卡窗格
	
	
	public MainView() {
		this.setTitle("选项卡窗格");
		this.setSize(1000, 700);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setResizable(false);
		
		int width = Toolkit.getDefaultToolkit().getScreenSize().width;  	// 屏幕宽
		int height = Toolkit.getDefaultToolkit().getScreenSize().height; 	// 屏幕高
		this.setLocation((width - 1000) / 2, (height-700) / 3);				// 设置窗体位置

		//添加选项卡窗格
		pane = new JTabbedPane(JTabbedPane.TOP);
		this.add(pane, BorderLayout.CENTER);
		pane.setFont(new Font("黑体", Font.PLAIN, 23));
		
		pane.addTab("", new JPanel());
		pane.setTabComponentAt(0, new tabPanel("选项卡1", pane));		// 实现关闭选项卡
		
		pane.addTab("", new JPanel());
		pane.setTabComponentAt(1, new tabPanel("选项卡2", pane));
		
		this.setVisible(true);
	}
	
	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		
	}

}

Main.java

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		MainView window = new MainView();
		
	}

}
参考文章:

https://blog.csdn.net/xietansheng/article/details/74366541
https://blog.csdn.net/pzhtpf/article/details/7645023

标签:选项卡,JTabbedPane,lab2,关闭,pane,new,public
来源: https://blog.csdn.net/Master_Notalina/article/details/121705886