1 files changed, 19 insertions, 0 deletions
diff --git a/src/java/org/apache/fop/pdf/PDFDocument.java b/src/java/org/apache/fop/pdf/PDFDocument.java
index 46effdfd6..f0a777bdd 100644
--- a/src/java/org/apache/fop/pdf/PDFDocument.java
+++ b/src/java/org/apache/fop/pdf/PDFDocument.java
@@ -355,6 +355,25 @@ public class PDFDocument {
     }
 
     /**
+     * Makes sure a Lang entry has been set on the document catalog, setting it
+     * to a default value if necessary. When accessibility is enabled the
+     * language must be specified for any text element in the document.
+     */
+    public void enforceLanguageOnRoot() {
+        if (root.getLanguage() == null) {
+            String fallbackLanguage;
+            if (getProfile().getPDFAMode().isPDFA1LevelA()) {
+                //According to Annex B of ISO-19005-1:2005(E), section B.2
+                fallbackLanguage = "x-unknown";
+            } else {
+                //No language has been set on the first page-sequence, so fall back to "en".
+                fallbackLanguage = "en";
+            }
+            root.setLanguage(fallbackLanguage);
+        }
+    }
+
+    /**
      * Get the {@link PDFInfo} object for this document.
      *
      * @return the {@link PDFInfo} object