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Remove unexpected keyboard layout changes #712

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Remove unexpected keyboard layout changes #712

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20 changes: 20 additions & 0 deletions src/main/java/de/neemann/digital/gui/Main.java
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,7 @@
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;
import java.awt.event.*;
import java.awt.im.InputContext;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
Expand Down Expand Up @@ -302,6 +303,25 @@ public void actionPerformed(ActionEvent actionEvent) {
setLocationRelativeTo(null);

checkIDEIntegration(builder, menuBar);

// Removes unexpected layout change
// https://github.com/hneemann/Digital/issues/709
// https://stackoverflow.com/questions/9667947/preserving-keyboard-layout-in-swing-app
AWTEventListener awtWindowListener = event -> {
if (event instanceof WindowEvent) {
if (WindowEvent.WINDOW_CLOSED == event.getID()
|| WindowEvent.WINDOW_CLOSING == event.getID()) {
Window child = ((WindowEvent) event).getWindow();
Window parent = SwingUtilities.getWindowAncestor(child);
if (parent == null) return;
InputContext childIC = child.getInputContext();
parent.getInputContext().selectInputMethod(childIC.getLocale());
}
}

};

Toolkit.getDefaultToolkit().addAWTEventListener(awtWindowListener, AWTEvent.WINDOW_EVENT_MASK);
}

private void checkIDEIntegration(MainBuilder builder, JMenuBar menuBar) {
Expand Down