当用户在 JDialog 外部单击时如何关闭模态 JDialog?

发布于 2024-08-10 05:28:15 字数 276 浏览 3 评论 0原文

我有一个未装饰的模态 JDialog,当用户在模态对话框外部单击时,我想将其 setVisible(false) 。

这在 Swing 中可能吗?

我正在做的是弹出一个文本字段的自定义编辑器,例如日期选择器。有没有更简单的方法来做我想做的事?

编辑

请记住,模式会阻止对 setVisible(true) 的调用,因此您不能只是说“不要使用模式对话框”

而且我尝试过将侦听器聚焦在对话框上,但它们不这样做当其模态时不触发。

I have a Undecorated Modal JDialog which I want to setVisible(false) when the user clicks outside of the modal dialog.

Is this possible in Swing?

What I am doing is popping up a custom editor for a text field like a date selector. Is there an easier way to do what I want?

EDIT

Remember that modal blocks on the call to setVisible(true), so you can't just say "don't use a modal dialog"

And I've tried focus listeners on the dialog, they don't trigger when its modal.

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评论(7

溺ぐ爱和你が 2024-08-17 05:28:15

编辑: 更改为使用 WindowFocusListener 而不是 FocusListener,并检查失去焦点的降序组件,以便在子组件获得焦点时不隐藏。

一种简单的方法是在对话框上添加一个窗口焦点侦听器,当焦点丢失时将其隐藏。我认为在这种情况下不需要模态。例如:

import javax.swing.*;
import java.awt.*;
import java.awt.event.WindowEvent;
import java.awt.event.WindowFocusListener;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class ClickAwayDialog extends JDialog {

    public ClickAwayDialog(final Frame owner) {
        super(owner);
        JPanel pnl = new JPanel(new BorderLayout());
        pnl.add(new JLabel("Click outside this dialog in the parent frame to close it"), BorderLayout.NORTH);
        JButton btn = new JButton("Click Me");
        btn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(ClickAwayDialog.this, "New Child Window");
            }
        });
        pnl.add(btn, BorderLayout.CENTER);
        this.setContentPane(pnl);
        this.pack();
        this.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        this.setLocationRelativeTo(owner);
        this.setAlwaysOnTop(true);
        this.addWindowFocusListener(new WindowFocusListener() {

            public void windowGainedFocus(WindowEvent e) {
                //do nothing
            }

            public void windowLostFocus(WindowEvent e) {
                if (SwingUtilities.isDescendingFrom(e.getOppositeWindow(), ClickAwayDialog.this)) {
                    return;
                }
                ClickAwayDialog.this.setVisible(false);
            }

        });
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JFrame parent = new JFrame();
                parent.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
                parent.setSize(300, 300);
                parent.setLocationByPlatform(true);
                parent.setVisible(true);
                ClickAwayDialog dlg = new ClickAwayDialog(parent);
                dlg.setVisible(true);                
            }
        });
    }
}

EDIT: Changed to use WindowFocusListener instead of FocusListener, as well as check for descending components on the focus lost in order to not hide if a child component gains focus.

A simple way would be to add a window focus listener on the dialog that hides it when focus is lost. I don't see the need for modality in this case. For example:

import javax.swing.*;
import java.awt.*;
import java.awt.event.WindowEvent;
import java.awt.event.WindowFocusListener;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class ClickAwayDialog extends JDialog {

    public ClickAwayDialog(final Frame owner) {
        super(owner);
        JPanel pnl = new JPanel(new BorderLayout());
        pnl.add(new JLabel("Click outside this dialog in the parent frame to close it"), BorderLayout.NORTH);
        JButton btn = new JButton("Click Me");
        btn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(ClickAwayDialog.this, "New Child Window");
            }
        });
        pnl.add(btn, BorderLayout.CENTER);
        this.setContentPane(pnl);
        this.pack();
        this.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        this.setLocationRelativeTo(owner);
        this.setAlwaysOnTop(true);
        this.addWindowFocusListener(new WindowFocusListener() {

            public void windowGainedFocus(WindowEvent e) {
                //do nothing
            }

            public void windowLostFocus(WindowEvent e) {
                if (SwingUtilities.isDescendingFrom(e.getOppositeWindow(), ClickAwayDialog.this)) {
                    return;
                }
                ClickAwayDialog.this.setVisible(false);
            }

        });
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JFrame parent = new JFrame();
                parent.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
                parent.setSize(300, 300);
                parent.setLocationByPlatform(true);
                parent.setVisible(true);
                ClickAwayDialog dlg = new ClickAwayDialog(parent);
                dlg.setVisible(true);                
            }
        });
    }
}
知你几分 2024-08-17 05:28:15

如果您可以在对话框外部单击并发生“某些事情”,那么它就不是模式对话框。所有答案都是正确的,您应该创建一个非模式对话框,然后通过 FocusListener 处理您的用例。

It's not a modal dialog if you can click outside of it and "something" happens. All the answers are correct, you should be creating a non-modal dialog and then deal with your use case via a FocusListener.

荆棘i 2024-08-17 05:28:15

它不一定是模式对话框(模式意味着它会阻止您使用所有者窗口,直到您隐藏该对话框)。最好尝试一下这个:

final JDialog dlg ...
dlg.setModal(false);

dlg.addWindowFocusListener(new WindowFocusListener() {            
    public void windowLostFocus(WindowEvent e) {
        dlg.setVisible(false);
    }            
    public void windowGainedFocus(WindowEvent e) {
    }
});

It's not necessary to be a modal dialog (modal means that it prevents you from using the owner window until you hide the dialog). Better try this:

final JDialog dlg ...
dlg.setModal(false);

dlg.addWindowFocusListener(new WindowFocusListener() {            
    public void windowLostFocus(WindowEvent e) {
        dlg.setVisible(false);
    }            
    public void windowGainedFocus(WindowEvent e) {
    }
});
风尘浪孓 2024-08-17 05:28:15

尝试将模式设置为 false,然后使用 windowsDeactivated() 关闭对话框(dialog.dispose()),对我有用。

Try to set the modal to false, and then use windowsDeactivated() for close de dialog (dialog.dispose()), works for me.

行至春深 2024-08-17 05:28:15

使用 WindowListener 并处理 windowDeactivated() 事件。

Use a WindowListener and handle the windowDeactivated() event.

尴尬癌患者 2024-08-17 05:28:15

并不是真正的模态对话框,如果单击其他位置关闭它,也许您需要 setAlwaysOnTop

但是,类似下面的内容应该可以解决问题(未经测试)。请注意,我建议将代码移动到比提供的使用更好的设计中。

static JDialog dialog = ...

Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
    public void eventDispatched(AWTEvent e) {
        dialog.setVisible(false);

        SwingUtils.invokeLater(new Runnable(){
            public void run(){
                Toolkit.getDefaultToolkit().removeAWTEventListener(this);
            }
        });        
    }
}, AWTEvent.MOUSE_EVENT_MASK);

dialog.setVisible(true);

Not really a modal dialog then if clicking else where closes it, maybe you want setAlwaysOnTop

However, something like the following should do the trick (untested). Note, I would recommend moving the code into something better designed than use as provided.

static JDialog dialog = ...

Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
    public void eventDispatched(AWTEvent e) {
        dialog.setVisible(false);

        SwingUtils.invokeLater(new Runnable(){
            public void run(){
                Toolkit.getDefaultToolkit().removeAWTEventListener(this);
            }
        });        
    }
}, AWTEvent.MOUSE_EVENT_MASK);

dialog.setVisible(true);
那请放手 2024-08-17 05:28:15

可能添加一个 FocusListener 并隐藏对话框失去焦点。如果对话框中的某些元素可以获得焦点,则可能会很棘手。无论如何,尝试一下。

Probably add a FocusListener and hide the dialog when it looses the focus. May be tricky if some elements in the dialog can have focus. Anyways, experiment with it.

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