src/java.desktop/unix/classes/sun/print/IPPPrintService.java

@@ -23,10 +23,12 @@
  * questions.
  */
 
 package sun.print;
 
+import java.awt.GraphicsEnvironment;
+import java.awt.Toolkit;
 import javax.print.attribute.*;
 import javax.print.attribute.standard.*;
 import javax.print.DocFlavor;
 import javax.print.DocPrintJob;
 import javax.print.PrintService;

@@ -1069,10 +1071,15 @@
         PrinterResolution[] supportedRes = getPrintResolutions();
         if (supportedRes != null && (supportedRes.length > 0)) {
             catList.add(PrinterResolution.class);
         }
 
+        if (GraphicsEnvironment.isHeadless() == false) {
+            catList.add(DialogOwner.class);
+            catList.add(DialogTypeSelection.class);
+        }
+
         supportedCats = new Class<?>[catList.size()];
         catList.toArray(supportedCats);
         Class<?>[] copyCats = new Class<?>[supportedCats.length];
         System.arraycopy(supportedCats, 0, copyCats, 0, copyCats.length);
         return copyCats;

@@ -1390,14 +1397,42 @@
                         return true;
                     }
                 }
             }
             return false;
-        } if (attr.getCategory() == PrinterResolution.class) {
+        } else if (attr.getCategory() == PrinterResolution.class) {
             if (attr instanceof PrinterResolution) {
                 return isSupportedResolution((PrinterResolution)attr);
             }
+        } else if (attr.getCategory() == DialogOwner.class) {
+            DialogOwner owner = (DialogOwner)attr;
+            // ID not supported on any dialog type on Unix platforms.
+            if (DialogOwnerAccessor.getID(owner) != 0) {
+                return false;
+            }
+            // On Mac we have no control over the native dialog.
+            DialogTypeSelection dst = (attributes == null) ? null :
+               (DialogTypeSelection)attributes.get(DialogTypeSelection.class);
+            if (PrintServiceLookupProvider.isMac() &&
+                dst == DialogTypeSelection.NATIVE) {
+                return false;
+            }
+            // The other case is always a Swing dialog on all Unix platforms.
+            // So we only need to check that the toolkit supports
+            // always on top.
+            if (owner.getOwner() != null) {
+                return true;
+            } else {
+                return Toolkit.getDefaultToolkit().isAlwaysOnTopSupported();
+            }
+        } else if (attr.getCategory() == DialogTypeSelection.class) {
+            if (PrintServiceLookupProvider.isMac()) {
+                return true;
+            } else {
+               DialogTypeSelection dst = (DialogTypeSelection)attr;
+               return attr == DialogTypeSelection.COMMON;
+            }
         }
         return true;
     }