Re: [Java AUT / JavaScript test] .Exists waits when window exists but is not visible

Using TC v15.55.53.7, here's a small example based on the website https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_style_visibility

It returns immediately

RefreshMappingInfo() makes it worse. It causes the waitAliasChild() to wait as well.

Here is proof that the issue is nothing to do with a quirk of the AUT.

Example Java App:

package com.example;

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

public class App extends JPanel implements ActionListener {
    private static JFrame childFrame;
    private static boolean secondFrameVisible = false;

    public App() {
        childFrame = new JFrame("Child Window");
        childFrame.setName("Child Frame");
        JLabel childLabel = new JLabel("This is a child frame");
        childLabel.setPreferredSize(new Dimension(400, 400));
        childFrame.getContentPane().add(childLabel);
        childFrame.pack();
        toggleSecondFrameVisibility();

        JButton toggleButton = new JButton("Toggle visibility");
        toggleButton.setActionCommand("vis");
        toggleButton.addActionListener(this);
        add(toggleButton);
    }

    private static void createAndShowGUI() {
        JFrame frame = new JFrame("FrameDemo");
        frame.setName("Main Frame");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(new App());
        frame.pack();
        frame.setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        toggleSecondFrameVisibility();
    }


    private static void toggleSecondFrameVisibility(){
        secondFrameVisible = !secondFrameVisible;
        childFrame.setVisible(secondFrameVisible);
    }

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

It looks like this - a main window ("FrameDemo") with a child window ("Child Window").
When you click the "Toggle Visibility" button in the main window, the Child Window is set to invisible.

Then create a Javascript project in TestComplete, add the following code to script Unit1:

function debugme(){
  Aliases.javaw.WaitAliasChild("Child_Frame").Exists; // <-- set breakpoint here
  Aliases.javaw.WaitAliasChild("Child_Frame").Exists; // <-- set breakpoint here
  Aliases.javaw.WaitAliasChild("Child_Frame").Exists; // <-- set breakpoint here
  Aliases.javaw.WaitAliasChild("Child_Frame").Exists; // <-- set breakpoint here
}

1. Run the sample Java app
2. Put a breakpoint on line 2 in the TestComplete IDE (The .Exists line)
3. Right click the function -> run this routine
4. F10 to step - no wait
5. Click the "Toggle Visibility" button in the sample app to hide the child frame
6. F10 to step - WAITS!!
7. Click the "Toggle Visibility" button in the sample app to show the child frame
8. F10 to step - no wait