<Swing Dev> MacOS BigSur: AllowsAutomaticWindowTabbing

[Roger Tönz]

Hi,

A little workaround for:
https://bugs.openjdk.java.net/browse/JDK-8256465

Calling:
ObjCRuntime.disableAllowsAutomaticWindowTabbing()
before first Window opens.

It’s just a workaround, not a solution.

Cheers
Roger Tönz



import java.util.logging.Level;
import java.util.logging.Logger;

import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.Pointer;

public interface ObjCRuntime extends Library {

  Pointer objc_lookUpClass(final String className);
  Pointer sel_getUid(final String s);
  long objc_msgSend(final Pointer pointer, final Pointer selector, Object... args);


  private static long invoke(final String className, final String selectorN, Object... args){
    final ObjCRuntime objCRuntime = Native.load("objc", ObjCRuntime.class);
    final Pointer clazz = objCRuntime.objc_lookUpClass(className);
    final Pointer selector = objCRuntime.sel_getUid(selectorN);
    return objCRuntime.objc_msgSend(clazz, selector, args);
  }

  //for MacOS 10.13 and higher (workaround for https://bugs.openjdk.java.net/browse/JDK-8256465)
  public static void disableAllowsAutomaticWindowTabbing() {
    try {
      ObjCRuntime.invoke("NSWindow", "setAllowsAutomaticWindowTabbing:", Boolean.FALSE);
    } catch(Throwable e){
      Logger.getAnonymousLogger("ObjCRuntime").log(Level.WARNING, e, ()->"NSWindow#AllowsAutomaticWindowTabbing=???");
    }
  }
}