PDF/UA-2. Add new methods

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDFormField.java

@@ -100,6 +100,11 @@ public String getTU() {
         return ((org.verapdf.pd.form.PDFormField)this.simplePDObject).getTU();
     }
 
+    @Override
+    public Long getFf() {
+        return ((org.verapdf.pd.form.PDFormField)this.simplePDObject).getFf();
+    }
+
     @Override
     public List<? extends Object> getLinkedObjects(String link) {
         switch (link) {

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDStructElem.java

@@ -241,7 +241,7 @@ public List<? extends Object> getLinkedObjects(String link) {
 		}
 	}
 
-	private List<String> getChildrenStandardTypes() {
+	public List<String> getChildrenStandardTypes() {
 		return getChildrenStandardTypes(this);
 	}
 

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/gfse/GFSEFENote.java

@@ -23,6 +23,7 @@
 import org.verapdf.gf.model.impl.pd.GFPDStructElem;
 import org.verapdf.model.selayer.SEFENote;
 import org.verapdf.pd.structure.PDStructElem;
+import org.verapdf.tools.AttributeHelper;
 import org.verapdf.tools.TaggedPDFConstants;
 
 public class GFSEFENote extends GFPDStructElem implements SEFENote {
@@ -32,4 +33,9 @@ public class GFSEFENote extends GFPDStructElem implements SEFENote {
     public GFSEFENote(PDStructElem structElemDictionary) {
         super(structElemDictionary, TaggedPDFConstants.FENOTE, FE_NOTE_STRUCTURE_ELEMENT_TYPE);
     }
+
+    @Override
+    public String getNoteType() {
+        return AttributeHelper.getNoteType(simplePDObject);
+    }
 }

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/gfse/GFSEFormula.java

@@ -32,4 +32,9 @@ public class GFSEFormula extends GFPDStructElem implements SEFormula {
     public GFSEFormula(PDStructElem structElemDictionary) {
         super(structElemDictionary, TaggedPDFConstants.FORMULA, FORMULA_STRUCTURE_ELEMENT_TYPE);
     }
+
+    @Override
+    public Boolean getisMathFormula() {
+        return getChildrenStandardTypes().contains(TaggedPDFConstants.MATH_ML);
+    }
 }

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/gfse/GFSEL.java

@@ -23,6 +23,7 @@
 import org.verapdf.gf.model.impl.pd.GFPDStructElem;
 import org.verapdf.model.selayer.SEL;
 import org.verapdf.pd.structure.PDStructElem;
+import org.verapdf.tools.AttributeHelper;
 import org.verapdf.tools.TaggedPDFConstants;
 
 public class GFSEL extends GFPDStructElem implements SEL {
@@ -32,4 +33,26 @@ public class GFSEL extends GFPDStructElem implements SEL {
     public GFSEL(PDStructElem structElemDictionary) {
         super(structElemDictionary, TaggedPDFConstants.L, L_STRUCTURE_ELEMENT_TYPE);
     }
+
+    @Override
+    public String getListNumbering() {
+        return AttributeHelper.getListNumbering(simplePDObject);
+    }
+
+    @Override
+    public Boolean getcontainsLabels() {
+        return containsLabels(this);
+    }
+
+    private boolean containsLabels(GFPDStructElem elem) {
+        if (elem.getChildrenStandardTypes().contains(TaggedPDFConstants.LBL)) {
+            return true;
+        }
+        for (GFPDStructElem child : getChildren()) {
+            if (!TaggedPDFConstants.L.equals(child.getstandardType()) && containsLabels(child)) {
+                return true;
+            }
+        }
+        return false;
+    }
 }

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/gfse/GFSETOCI.java

@@ -25,11 +25,31 @@
 import org.verapdf.pd.structure.PDStructElem;
 import org.verapdf.tools.TaggedPDFConstants;
 
+import java.util.List;
+
 public class GFSETOCI extends GFPDStructElem implements SETOCI {
 
     public static final String TOCI_STRUCTURE_ELEMENT_TYPE = "SETOCI";
 
     public GFSETOCI(PDStructElem structElemDictionary) {
         super(structElemDictionary, TaggedPDFConstants.TOCI, TOCI_STRUCTURE_ELEMENT_TYPE);
     }
+
+    @Override
+    public Boolean getcontainsRef() {
+        return containsRef((PDStructElem)simplePDObject);
+    }
+
+    private boolean containsRef(PDStructElem elem) {
+        if (elem.containsRef()) {
+            return true;
+        }
+        List<PDStructElem> children = elem.getStructChildren();
+        for (PDStructElem child : children) {
+            if (containsRef(child)) {
+                return true;
+            }
+        }
+        return false;
+    }
 }