关闭Swing模态弹出窗口

Question

When I am trying to hide or close popup dialog invoked as a modal, the components disappears as they should, but the grey screen that indicates modality of the window is still visible, until the fist mouse click event at this window area.

WebPopup darkenScreen = new WebPopup(PopupStyle.gray);
ContructPopUP(darkenScreen);
darkenScreen.showPopupAsModal(this);

And popup settings method :

private void ContructPopUP(WebPopup darkenScreen)
{
    final JFrame mFrame = this;
    final WebTextField inputTime = new WebTextField("(sekundy)");
    darkenScreen.setLayout(new GridLayout(3, 1));
    darkenScreen.add(new WebLabel("Podaj czas : "));
    darkenScreen.add(inputTime);
    darkenScreen.add(new WebButton(new ActionListener()
    {
        @Override
        public void actionPerformed(ActionEvent e)
        {
            int secTime = Integer.parseInt(inputTime.getText());
            if (secTime > 0 && secTime < 7200)
            {
                Connection.TurnOff(secTime);
                System.out.println("clicked!");
            }

            darkenScreen.hidePopup();
        }
    }));
}

When invoking as ordinary popup everything disappears as indented. I've tried to close it in many ways but none of them worked.

Before clicking button and executing popup.hide :

after doing it :

Answer 1

Assuming you are using the WebLaF library , I think your problem might be caused by the PopupLayer.hidePopup method. This method is called by the WebPopup.hidePopup method and should hide the modal popup, but as you noticed, the gray layer does not disappear. If you look at PopupLayer.hideAllPopups , all popups are removed in this method and the popup layer is made invisible . I do not have experience with the WebLaF library and it feels hackish, but you might be able to solve your problem by hiding the popup layer yourself:

import com.alee.laf.button.WebButton;
import com.alee.laf.label.WebLabel;
import com.alee.laf.text.WebTextField;
import com.alee.managers.popup.PopupStyle;
import com.alee.managers.popup.WebPopup;

import java.awt.GridLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;

public class ModalWebPopup {
    public static void main(final String[] arguments) {
        new ModalWebPopup().launchGui();
    }

    private void launchGui() {
        final JFrame frame = new JFrame("Stack Overflow: modal WebPopup");
        frame.setBounds(100, 100, 800, 600);
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        final JPanel panel = new JPanel();
        final JButton button1 = new JButton("Show a modal WebPopup");
        panel.add(button1);
        frame.getContentPane().add(panel);

        button1.addActionListener(actionEvent -> {
            final WebPopup darkenScreen = new WebPopup(PopupStyle.gray);
            constructPopup(darkenScreen);
            darkenScreen.showPopupAsModal(frame);
        });

        frame.setVisible(true);
    }

    private void constructPopup(final WebPopup darkenScreen) {
        //final JFrame mFrame = this;
        final WebTextField inputTime = new WebTextField("(sekundy)");
        darkenScreen.setLayout(new GridLayout(3, 1));
        darkenScreen.add(new WebLabel("Podaj czas : "));
        darkenScreen.add(inputTime);
        darkenScreen.add(new WebButton(actionEvent -> {
            int secTime = Integer.parseInt(inputTime.getText());
            if (secTime > 0 && secTime < 7200) {
                //Connection.TurnOff(secTime);
                System.out.println("clicked!");
            }

            System.out.print("Hide the modal WebPopup ");

            // Normal way to hide the popup:
            //darkenScreen.hidePopup();

            System.out.println("by making the parent of the WebPopup invisible.");

            // Alternative way to hide the popup:
            darkenScreen.getParent().setVisible(false);

            // Compare the PopupLayer.hideAllPopups and PopupLayer.hidePopup methods
            // for more details.
        }));
    }
}