Add a file filter ACCEPT_ALL_BUT_HIDDEN_FILTER.

SVN: 25921

common/source/java/ch/systemsx/cisd/common/filesystem/FileUtilities.java

@@ -103,6 +103,18 @@ public final class FileUtilities
             }
         };
 
+    /**
+     * A file filter that accepts all entries but the hidden ones.
+     */
+    public static final FileFilter ACCEPT_ALL_BUT_HIDDEN_FILTER = new FileFilter()
+        {
+            @Override
+            public boolean accept(File pathname)
+            {
+                return pathname.isHidden() == false;
+            }
+        };
+
     /**
      * Copies the content of the specified source file to the specified destination file.
      *