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:
public class myDialog extends modalInternalFrame {
....
然后使用它来实际显示它来自我的顶级“桌面”JFrame(包含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的一部分超出内部框架的边界时,该部分不处理鼠标事件(你不能滚动该部分)。
任何想法?
答案 0 :(得分:1)
如何使用JOptionPane.showInternalMessageDialog(...)
:
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);
}
}
答案 1 :(得分:0)
弹出窗口有三种类型:
唯一一个在模态状态下工作的是重量级弹出窗口。 &#34;官方&#34;改变弹出窗口权重的方法是通过javax.swing.ClientPropertyKey.PopupFactory_FORCE_HEAVYWEIGHT_POPUP
方法。
如果将其设置为false,则弹出窗口在应用程序框架内时为中等重量,在超出框架边界时为重量。
要强行加权,您必须使用名为try {
Class<?> enumElement = Class.forName("javax.swing.ClientPropertyKey");
Object[] constants = enumElement.getEnumConstants();
putClientProperty(constants[3], Boolean.TRUE);
}
catch(ClassNotFoundException ex) {}
的客户端属性。使用此属性,您可以强制弹出窗口(或容器中的每个弹出窗口)都很重。但访问它的唯一方法是通过反思,因为它是私有的。
以下是一个示例代码:
modalInternalFrame
如果你把它放在SimpleDateFormat
的构造函数中,那么放在它上面的每一个弹出窗口都会很重。