Initial Commit

iTechSharp/iTextSharp/text/pdf/collection/PdfCollectionSort.cs

@@ -0,0 +1,63 @@
+using System;
+using iTextSharp.text.pdf;
+
+namespace iTextSharp.text.pdf.collection {
+
+    public class PdfCollectionSort : PdfDictionary {
+        
+        /**
+        * Constructs a PDF Collection Sort Dictionary.
+        * @param key   the key of the field that will be used to sort entries
+        */
+        public PdfCollectionSort(String key) : base(PdfName.COLLECTIONSORT) {
+            Put(PdfName.S, new PdfName(key));
+        }
+        
+        /**
+        * Constructs a PDF Collection Sort Dictionary.
+        * @param keys  the keys of the fields that will be used to sort entries
+        */
+        public PdfCollectionSort(String[] keys) : base(PdfName.COLLECTIONSORT) {
+            PdfArray array = new PdfArray();
+            for (int i = 0; i < keys.Length; i++) {
+                array.Add(new PdfName(keys[i]));
+            }
+            Put(PdfName.S, array);
+        }
+        
+        /**
+        * Defines the sort order of the field (ascending or descending).
+        * @param ascending true is the default, use false for descending order
+        */
+        public void SetSortOrder(bool ascending) {
+            PdfObject o = (PdfObject)Get(PdfName.S);
+            if (o is PdfName) {
+                Put(PdfName.A, new PdfBoolean(ascending));
+            }
+            else {
+                throw new InvalidOperationException("You have to define a bool array for this collection sort dictionary.");
+            }
+        }
+        
+        /**
+        * Defines the sort order of the field (ascending or descending).
+        * @param ascending an array with every element corresponding with a name of a field.
+        */
+        public void SetSortOrder(bool[] ascending) {
+            PdfObject o = (PdfObject)Get(PdfName.S);
+            if (o is PdfArray) {
+                if (((PdfArray)o).Size != ascending.Length) {
+                    throw new InvalidOperationException("The number of booleans in this array doesn't correspond with the number of fields.");
+                }
+                PdfArray array = new PdfArray();
+                for (int i = 0; i < ascending.Length; i++) {
+                    array.Add(new PdfBoolean(ascending[i]));
+                }
+                Put(PdfName.A, array);
+            }
+            else {
+                throw new InvalidOperationException("You need a single bool for this collection sort dictionary.");
+            }
+        }
+    }
+}