//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2008 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

import pdftron.PDF.*;
import pdftron.SDF.SDFDoc;
import pdftron.FDF.*;


//---------------------------------------------------------------------------------------
// PDFNet includes a full support for FDF (Forms Data Format) and capability to merge/extract 
// forms data (FDF) with/from PDF. This sample illustrates basic FDF merge/extract functionality 
// available in PDFNet.
//---------------------------------------------------------------------------------------
public class FDFTest 
{
	public static void main(String[] args) {

		PDFNet.initialize();
		PDFNet.setResourcesPath("../../../resources");

		// Relative path to the folder containing test files.
		String input_path =  "../../TestFiles/";
		String output_path = "../../TestFiles/Output/";

		// Example 1)
		// Iterate over all form fields in the document. Display all field names.
		try  
		{
			PDFDoc doc = new PDFDoc((input_path + "form1.pdf"));
			doc.initSecurityHandler();

			for(FieldIterator itr = doc.getFieldIterator(); itr.hasNext();) 
			{
				Field current=(Field)(itr.next());
				System.out.println("Field name: " + current.getName());
				System.out.println("Field partial name: " + current.getPartialName());

				System.out.print("Field type: ");
				int type = current.getType();
				switch(type)
				{
				case Field.e_button: System.out.println("Button"); break;
				case Field.e_text: System.out.println("Text"); break;
				case Field.e_choice: System.out.println("Choice"); break;
				case Field.e_signature: System.out.println("Signature"); break;
				}

				System.out.println("------------------------------");
			}

			System.out.println("Done.");
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}

		// Example 2) Merge data from FDF
		try  
		{
			System.out.println("Merge data from FDF.");

			PDFDoc doc=new PDFDoc((input_path + "form1.pdf"));
			doc.initSecurityHandler();

			FDFDoc fdf_doc=new FDFDoc((input_path + "form1_data.fdf"));
			doc.fdfMerge(fdf_doc);

			// To use PDFNet form field appearance generation instead of relying on 
			// Acrobat, uncomment the following two lines:
			//doc.refreshFieldAppearances();
			//doc.getAcroForm().putBool("NeedAppearances", false);

			doc.save((output_path + "form1_filled.pdf"), SDFDoc.e_linearized, null);

			System.out.println("Done.");
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}

		// Example 3) Extract data to FDF
		try  
		{
			System.out.println("Extract data to FDF.");

			PDFDoc in_doc=new PDFDoc((output_path + "form1_filled.pdf"));
			in_doc.initSecurityHandler();

			FDFDoc doc = in_doc.fdfExtract();
			doc.setPDFFileName("../form1.pdf");
			doc.save((output_path + "form1_filled_data.fdf"));

			System.out.println("Done.");
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}

		// Example 4) Read FDF files directly
		try  
		{
			FDFDoc doc=new FDFDoc((output_path + "form1_filled_data.fdf"));

			for(FDFFieldIterator itr = doc.getFieldIterator(); itr.hasNext();) 
			{
				FDFField current=(FDFField)(itr.next());
				System.out.println("Field name: " + current.getName());
				System.out.println("Field partial name: " + current.getPartialName());

				System.out.println("------------------------------");
			}

			System.out.println("Done.");
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}

		// Example 5) Direct generation of FDF.
		try  
		{
			FDFDoc doc=new FDFDoc();
			// Create new fields (i.e. key/value pairs).
			doc.fieldCreate("Company", Field.e_text, "PDFTron Systems");
			doc.fieldCreate("First Name", Field.e_text, "John");
			doc.fieldCreate("Last Name", Field.e_text,  "Doe");
			// ...		

			// doc.setPdfFileName("mydoc.pdf");

			doc.save((output_path + "sample_output.fdf"));
			System.out.println("Done.");
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}

		PDFNet.terminate();
	}
}