01: package com.lowagie.text.pdf.collection;
02:
03: import com.lowagie.text.pdf.PdfArray;
04: import com.lowagie.text.pdf.PdfBoolean;
05: import com.lowagie.text.pdf.PdfDictionary;
06: import com.lowagie.text.pdf.PdfName;
07: import com.lowagie.text.pdf.PdfObject;
08:
09: public class PdfCollectionSort extends PdfDictionary {
10:
11: /**
12: * Constructs a PDF Collection Sort Dictionary.
13: * @param key the key of the field that will be used to sort entries
14: */
15: public PdfCollectionSort(String key) {
16: super (PdfName.COLLECTIONSORT);
17: put(PdfName.S, new PdfName(key));
18: }
19:
20: /**
21: * Constructs a PDF Collection Sort Dictionary.
22: * @param keys the keys of the fields that will be used to sort entries
23: */
24: public PdfCollectionSort(String[] keys) {
25: super (PdfName.COLLECTIONSORT);
26: PdfArray array = new PdfArray();
27: for (int i = 0; i < keys.length; i++) {
28: array.add(new PdfName(keys[i]));
29: }
30: put(PdfName.S, array);
31: }
32:
33: /**
34: * Defines the sort order of the field (ascending or descending).
35: * @param ascending true is the default, use false for descending order
36: */
37: public void setSortOrder(boolean ascending) {
38: PdfObject o = (PdfObject) get(PdfName.S);
39: if (o instanceof PdfName) {
40: put(PdfName.A, new PdfBoolean(ascending));
41: } else {
42: throw new IllegalArgumentException(
43: "You have to define a boolean array for this collection sort dictionary.");
44: }
45: }
46:
47: /**
48: * Defines the sort order of the field (ascending or descending).
49: * @param ascending an array with every element corresponding with a name of a field.
50: */
51: public void setSortOrder(boolean[] ascending) {
52: PdfObject o = (PdfObject) get(PdfName.S);
53: if (o instanceof PdfArray) {
54: if (((PdfArray) o).size() != ascending.length) {
55: throw new IllegalArgumentException(
56: "The number of booleans in this array doesn't correspond with the number of fields.");
57: }
58: PdfArray array = new PdfArray();
59: for (int i = 0; i < ascending.length; i++) {
60: array.add(new PdfBoolean(ascending[i]));
61: }
62: put(PdfName.A, array);
63: } else {
64: throw new IllegalArgumentException(
65: "You need a single boolean for this collection sort dictionary.");
66: }
67: }
68:
69: }
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