JInternalFrame作为模态 [英] JInternalFrame As Modal

问题描述

我有以下代码：

import java.awt.AWTEvent;
import java.awt.ActiveEvent;
import java.awt.Component;
import java.awt.EventQueue;
import java.awt.MenuComponent;
import java.awt.event.MouseEvent;
import javax.swing.JInternalFrame;
import javax.swing.SwingUtilities;

public class modalInternalFrame extends JInternalFrame {

// indica si aquest es modal o no.
    boolean modal = false;

    @Override
    public void show() {
        super.show();
        if (this.modal) {
            startModal();
        }
    }

    @Override
    public void setVisible(boolean value) {
        super.setVisible(value);
        if (modal) {
            if (value) {
                startModal();
            } else {
                stopModal();
            }
        }
    }

    private synchronized void startModal() {

        try {
            if (SwingUtilities.isEventDispatchThread()) {
                EventQueue theQueue =
                        getToolkit().getSystemEventQueue();
                while (isVisible()) {
                    AWTEvent event = theQueue.getNextEvent();
                    Object source = event.getSource();
                    boolean dispatch = true;

                    if (event instanceof MouseEvent) {
                        MouseEvent e = (MouseEvent) event;
                        MouseEvent m =
                                SwingUtilities.convertMouseEvent((Component) e.getSource(), e, this);
                        if (!this.contains(m.getPoint()) && e.getID() != MouseEvent.MOUSE_DRAGGED) {
                            dispatch = false;
                        }
                    }

                    if (dispatch) {
                        if (event instanceof ActiveEvent) {
                            ((ActiveEvent) event).dispatch();
                        } else if (source instanceof Component) {
                            ((Component) source).dispatchEvent(
                                    event);
                        } else if (source instanceof MenuComponent) {
                            ((MenuComponent) source).dispatchEvent(
                                    event);
                        } else {
                            System.err.println(
                                    "Unable to dispatch: " + event);
                        }
                    }
                }
            } else {
                while (isVisible()) {
                    wait();
                }
            }
        } catch (InterruptedException ignored) {
        }

    }

    private synchronized void stopModal() {
        notifyAll();
    }

    public void setModal(boolean modal) {
        this.modal = modal;
    }

    public boolean isModal() {
        return this.modal;
    }
}

然后我使用NetBeans GUI绘制我的JInternalFrame，但只是更改了类声明中的代码以扩展modalInternalFrame而不是JInternalFrame：

Then I used the NetBeans GUI to draw my JInternalFrame, but just changed the code in the class declaration to extend modalInternalFrame instead of JInternalFrame:

public class myDialog extends modalInternalFrame { 
....

然后使用它来实际显示来自我的顶级桌面JFrame （包含jDesktopPane1）：

and then used this to actually display it from my top-level "desktop" JFrame (containing jDesktopPane1):

myDialog d = new myDialog();
d.setModal(true);
d.setBounds(160, 180, 550, 450);
jDesktopPane1.add(d);
d.setVisible(true);

我的问题是：如果内部框架有JComboBox或PopupMenu，当PopupMenu的一部分不在内部框架的边界部分不处理鼠标事件（你不能滚动那部分）。

My Problem is: If the internal frame has JComboBox or PopupMenu, when part of PopupMenu is out of the internal frame's boundry that part don't handle mouse event (you cann't scroll that part).

任何想法？

推荐答案

如何使用 JOptionPane.showInternalMessageDialog（...）：

• 我在Windows 7 x64上运行JDK 1.7.0_21：

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

public class ModalInternalFrameTest {
  private final JDesktopPane desktop = new JDesktopPane();
  private final String[] items = new String[] {
    "bananas", "pizza", "hot dogs", "ravioli"
  };
  private final Action openAction = new AbstractAction("open") {
    @Override public void actionPerformed(ActionEvent e) {
      JComboBox<String> combo = new JComboBox<String>(items);
      combo.setEditable(true);
      JOptionPane.showInternalMessageDialog(desktop, combo);
      System.out.println(combo.getSelectedItem());
    }
  };
  public JComponent makeUI(JFrame frame) {
    frame.setJMenuBar(createMenuBar());

    JButton button = new JButton(openAction);
    button.setMnemonic(KeyEvent.VK_S);
    JInternalFrame internal = new JInternalFrame("Button");
    internal.getContentPane().add(button);
    internal.setBounds(20, 20, 100, 100);
    desktop.add(internal);
    internal.setVisible(true);

    JButton b = new JButton(new AbstractAction("beep") {
      @Override public void actionPerformed(ActionEvent e) {
        Toolkit.getDefaultToolkit().beep();
      }
    });
    b.setMnemonic(KeyEvent.VK_B);

    JPanel p = new JPanel(new BorderLayout());
    p.add(b, BorderLayout.SOUTH);
    p.add(desktop);
    return p;
  }
  private JMenuBar createMenuBar() {
    JMenuBar menuBar = new JMenuBar();
    JMenu menu = new JMenu("Frame");
    menu.setMnemonic(KeyEvent.VK_F);
    menuBar.add(menu);

    JMenuItem menuItem = new JMenuItem(openAction);
    menuItem.setMnemonic(KeyEvent.VK_1);
    menuItem.setAccelerator(
      KeyStroke.getKeyStroke(KeyEvent.VK_1, ActionEvent.ALT_MASK));
    menu.add(menuItem);

    return menuBar;
  }
  public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
      @Override public void run() {
        createAndShowGUI();
      }
    });
  }
  public static void createAndShowGUI() {
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    f.getContentPane().add(new ModalInternalFrameTest().makeUI(f));
    f.setSize(640, 480);
    f.setLocationRelativeTo(null);
    f.setVisible(true);
  }
}

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