com.lowagie.text.pdf.collection.PdfCollectionSort Maven / Gradle / Ivy
package com.lowagie.text.pdf.collection;
import com.lowagie.text.pdf.PdfArray;
import com.lowagie.text.pdf.PdfBoolean;
import com.lowagie.text.pdf.PdfDictionary;
import com.lowagie.text.pdf.PdfName;
import com.lowagie.text.pdf.PdfObject;
import com.lowagie.text.error_messages.MessageLocalization;
public class PdfCollectionSort extends 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) {
super(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) {
super(PdfName.COLLECTIONSORT);
PdfArray array = new PdfArray();
for (String key : keys) {
array.add(new PdfName(key));
}
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(boolean ascending) {
PdfObject o = get(PdfName.S);
if (o instanceof PdfName) {
put(PdfName.A, new PdfBoolean(ascending));
}
else {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("you.have.to.define.a.boolean.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(boolean[] ascending) {
PdfObject o = get(PdfName.S);
if (o instanceof PdfArray) {
if (((PdfArray)o).size() != ascending.length) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("the.number.of.booleans.in.this.array.doesn.t.correspond.with.the.number.of.fields"));
}
PdfArray array = new PdfArray();
for (boolean b : ascending) {
array.add(new PdfBoolean(b));
}
put(PdfName.A, array);
}
else {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("you.need.a.single.boolean.for.this.collection.sort.dictionary"));
}
}
}