[英]Can not click on tab when mouse listener has been added
我一直在嘗試將彈出菜單添加到JTabbedPane的選項卡標題中,我已設法執行如下操作:
tabbedPane.setTabComponentAt(a+2, x);
x.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
maybeShowPopup(e);
}
@Override
public void mousePressed(MouseEvent e) {
maybeShowPopup(e);
}
@Override
public void mouseExited(MouseEvent e) {}
@Override
public void mouseEntered(MouseEvent e) {}
@Override
public void mouseClicked(MouseEvent e) {}
private void maybeShowPopup(MouseEvent e) {
if (e.isPopupTrigger()) {
popUpMenuTab.show(e.getComponent(),
e.getX(), e.getY());
}
}
});
但是,如果您右鍵單擊,則會顯示上下文菜單,但如果您單擊鼠標左鍵,則無需任何操作。 有沒有人知道如何在選項卡上重新獲得原始功能,以便它在左鍵單擊時更改為活動狀態,但右鍵單擊也可以顯示上下文菜單。
SSCCE如下
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JTabbedPane;
public class JTabbedPaneDemoextends JPanel {
private JPopupMenu menu = new JPopupMenu();
public JTabbedPaneDemo() {
ImageIcon icon = new ImageIcon("java-swing-tutorial.JPG");
JTabbedPane jtbExample = new JTabbedPane();
JPanel jplInnerPanel1 = createInnerPanel("Tab 1 Contains Tooltip and Icon");
jtbExample.addTab("One", icon, jplInnerPanel1, "Tab 1");
jtbExample.setSelectedIndex(0);
JPanel jplInnerPanel2 = createInnerPanel("Tab 2 Contains Icon only");
jtbExample.addTab("Two", icon, jplInnerPanel2);
JPanel jplInnerPanel3 = createInnerPanel("Tab 3 Contains Tooltip and Icon");
jtbExample.addTab("Three", icon, jplInnerPanel3, "Tab 3");
JPanel jplInnerPanel4 = createInnerPanel("Tab 4 Contains Text only");
jtbExample.addTab("Four", jplInnerPanel4);
menu.add(new JMenuItem("Item 1"));
menu.add(new JMenuItem("Item 2"));
JLabel tab4Label = new JLabel();
tab4Label.setText("Four");
jtbExample.setTabComponentAt(3, tab4Label);
tab4Label.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
maybeShowPopup(e);
}
@Override
public void mousePressed(MouseEvent e) {
maybeShowPopup(e);
}
@Override
public void mouseExited(MouseEvent e) {}
@Override
public void mouseEntered(MouseEvent e) {}
@Override
public void mouseClicked(MouseEvent e) {}
private void maybeShowPopup(MouseEvent e) {
if (e.isPopupTrigger()) {
menu.show(e.getComponent(),
e.getX(), e.getY());
}
}
});
//Add the tabbed pane to this panel.
setLayout(new GridLayout(1, 1));
add(jtbExample);
}
protected JPanel createInnerPanel(String text) {
JPanel jplPanel = new JPanel();
JLabel jlbDisplay = new JLabel(text);
jlbDisplay.setHorizontalAlignment(JLabel.CENTER);
jplPanel.setLayout(new GridLayout(1, 1));
jplPanel.add(jlbDisplay);
return jplPanel;
}
public static void main(String[] args) {
JFrame frame = new JFrame("TabbedPane Source Demo");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);}
});
frame.getContentPane().add(new JTabbedPaneDemo(),
BorderLayout.CENTER);
frame.setSize(400, 125);
frame.setVisible(true);
}
}
在這里,您可以左鍵單擊選項卡4,但無法右鍵單擊。
這是我的解決方案:
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JTabbedPane;
public class JTabbedPaneDemo extends JPanel {
private JPopupMenu menu = new JPopupMenu();
private JTabbedPane jtbExample;
public JTabbedPaneDemo() {
ImageIcon icon = new ImageIcon("java-swing-tutorial.JPG");
jtbExample = new JTabbedPane();
JPanel jplInnerPanel1 = createInnerPanel("Tab 1 Contains Tooltip and Icon");
jtbExample.addTab("One", icon, jplInnerPanel1, "Tab 1");
jtbExample.setSelectedIndex(0);
JPanel jplInnerPanel2 = createInnerPanel("Tab 2 Contains Icon only");
jtbExample.addTab("Two", icon, jplInnerPanel2);
JPanel jplInnerPanel3 = createInnerPanel("Tab 3 Contains Tooltip and Icon");
jtbExample.addTab("Three", icon, jplInnerPanel3, "Tab 3");
JPanel jplInnerPanel4 = createInnerPanel("Tab 4 Contains Text only");
jtbExample.addTab("Four", jplInnerPanel4);
menu.add(new JMenuItem("Item 1"));
menu.add(new JMenuItem("Item 2"));
JLabel tab4Label = new JLabel();
tab4Label.setText("Four");
jtbExample.setTabComponentAt(3, tab4Label);
tab4Label.addMouseListener(new TabbedMouseListener(3));
// Add the tabbed pane to this panel.
setLayout(new GridLayout(1, 1));
add(jtbExample);
}
protected JPanel createInnerPanel(String text) {
JPanel jplPanel = new JPanel();
JLabel jlbDisplay = new JLabel(text);
jlbDisplay.setHorizontalAlignment(JLabel.CENTER);
jplPanel.setLayout(new GridLayout(1, 1));
jplPanel.add(jlbDisplay);
return jplPanel;
}
/**
*
* Mouselistener for the Tabbedpane
*
*/
class TabbedMouseListener extends MouseAdapter {
private final int index;
/**
* Constructor
*
* @param index
* the index of the tab
*/
public TabbedMouseListener(int index) {
this.index = index;
}
public void mouseReleased(MouseEvent e) {
maybeShowPopup(e);
}
private void maybeShowPopup(MouseEvent e) {
if (e.isPopupTrigger()) {
menu.show(e.getComponent(), e.getX(), e.getY());
}
else {
jtbExample.setSelectedIndex(index);
}
}
}
public static void main(String[] args) {
JFrame frame = new JFrame("TabbedPane Source Demo");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.getContentPane().add(new JTabbedPaneDemo(), BorderLayout.CENTER);
frame.setSize(400, 125);
frame.setVisible(true);
}
}
我把聽眾變成了一個班級。 聲明偵聽器時,可以將選項卡的索引作為參數。
我還使tabbedPane全局化
更新:巧合的是,這個答案采用與@ Neifen的答案相同的方法,但這個例子可能值得保留。
設置選項卡式窗格模型的選定索引似乎有效: getModel().setSelectedIndex(3)
。 我已經更新了您的示例以使用事件調度線程,並通過使其自包含成為sscce 。
import java.awt.EventQueue;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.Icon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JTabbedPane;
import javax.swing.UIManager;
/** @see https://stackoverflow.com/questions/7818752 */
public class JTabbedPaneDemo extends JPanel {
private JPopupMenu menu = new JPopupMenu();
public JTabbedPaneDemo() {
Icon icon = UIManager.getIcon("html.pendingImage");
final JTabbedPane jtb = new JTabbedPane();
JPanel jplInnerPanel1 = createInnerPanel("Tab 1: Tooltip and Icon");
jtb.addTab("One", icon, jplInnerPanel1, "Tab 1");
jtb.setSelectedIndex(0);
JPanel jplInnerPanel2 = createInnerPanel("Tab 2: Icon only");
jtb.addTab("Two", icon, jplInnerPanel2);
JPanel jplInnerPanel3 = createInnerPanel("Tab 3: Tooltip and Icon");
jtb.addTab("Three", icon, jplInnerPanel3, "Tab 3");
JPanel jplInnerPanel4 = createInnerPanel("Tab 4: Text only");
jtb.addTab("Four", jplInnerPanel4);
menu.add(new JMenuItem("Item 1"));
menu.add(new JMenuItem("Item 2"));
JLabel tab4Label = new JLabel();
tab4Label.setText("Four");
jtb.setTabComponentAt(3, tab4Label);
tab4Label.addMouseListener(new MouseAdapter() {
@Override
public void mouseReleased(MouseEvent e) {
maybeShowPopup(e);
}
@Override
public void mousePressed(MouseEvent e) {
maybeShowPopup(e);
}
private void maybeShowPopup(MouseEvent e) {
jtb.getModel().setSelectedIndex(3);
if (e.isPopupTrigger()) {
menu.show(e.getComponent(), e.getX(), e.getY());
}
}
});
setLayout(new GridLayout());
add(jtb);
}
private JPanel createInnerPanel(String text) {
JPanel jplPanel = new JPanel();
JLabel jlbDisplay = new JLabel(text);
jlbDisplay.setHorizontalAlignment(JLabel.CENTER);
jplPanel.setLayout(new GridLayout(1, 1));
jplPanel.add(jlbDisplay);
return jplPanel;
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame("TabbedPane Source Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new JTabbedPaneDemo());
frame.pack();
frame.setSize(400, 125);
frame.setVisible(true);
}
});
}
}
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