jtabbedpane触发事件
-
21-12-2019 - |
题
我想在点击“+”选项卡时触发事件(并且没有其他选项卡)。基本上,我希望“+”标签像按钮一样行动。我不太确定要使用哪种类型的倾听者。我该怎么办?
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class JTPTest extends JTabbedPane {
public JTPTest() {
this.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent changeEvent) {
System.out.println(changeEvent);
}
});
JPanel blankJPanel = new JPanel();
this.addTab("+", blankJPanel);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame();
frame.add(new JTPTest());
frame.setSize(500, 500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
});
}
}
. 解决方案
尝试:
.JPanel blankJPanel1 = new JPanel(); this.addTab("+", blankJPanel1);
setModel(new DefaultSingleSelectionModel() {
@Override
public void setSelectedIndex(int index) {
System.out.println("woah!");
}
});
.
更新
只是一个替代版本,而无需修改模型行为。
.JPanel blankJPanel = new JPanel(); this.addTab("dummy text", blankJPanel);
JLabel label = new JLabel("x");
label.setBorder(BorderFactory.createEmptyBorder(0, 10, 0, 10));
label.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
System.out.println("woah!!");
}
});
setTabComponentAt(indexOfComponent(blankJPanel), label);
.
更新2 似乎我最终做了类似于这个答案,请将其称为这个问题的“最佳”解决方案。
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