src/java.desktop/unix/classes/sun/awt/X11/XDialogPeer.java

*** 115,125 ****
          Vector<XWindowPeer> javaToplevels = null;
          XToolkit.awtLock();
          try {
              javaToplevels = XWindowPeer.collectJavaToplevels();
              for (Window w : toBlock) {
!                 XWindowPeer wp = (XWindowPeer)AWTAccessor.getComponentAccessor().getPeer(w);
                  if (wp != null) {
                      wp.setModalBlocked((Dialog)target, true, javaToplevels);
                  }
              }
          } finally {
--- 115,125 ----
          Vector<XWindowPeer> javaToplevels = null;
          XToolkit.awtLock();
          try {
              javaToplevels = XWindowPeer.collectJavaToplevels();
              for (Window w : toBlock) {
!                 XWindowPeer wp = AWTAccessor.getComponentAccessor().getPeer(w);
                  if (wp != null) {
                      wp.setModalBlocked((Dialog)target, true, javaToplevels);
                  }
              }
          } finally {
*** 137,147 ****
      boolean isFocusedWindowModalBlocker() {
          Window focusedWindow = XKeyboardFocusManagerPeer.getInstance().getCurrentFocusedWindow();
          XWindowPeer focusedWindowPeer = null;
  
          if (focusedWindow != null) {
!             focusedWindowPeer = (XWindowPeer)AWTAccessor.getComponentAccessor().getPeer(focusedWindow);
          } else {
              /*
               * For the case when a potential blocked window is not yet focused
               * on the Java level (e.g. it's just been mapped) we're asking for the
               * focused window on the native level.
--- 137,147 ----
      boolean isFocusedWindowModalBlocker() {
          Window focusedWindow = XKeyboardFocusManagerPeer.getInstance().getCurrentFocusedWindow();
          XWindowPeer focusedWindowPeer = null;
  
          if (focusedWindow != null) {
!             focusedWindowPeer = AWTAccessor.getComponentAccessor().getPeer(focusedWindow);
          } else {
              /*
               * For the case when a potential blocked window is not yet focused
               * on the Java level (e.g. it's just been mapped) we're asking for the
               * focused window on the native level.