<?php
//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2012 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------
include("../../../Lib/PDFNetPHP.php");

//---------------------------------------------------------------------------------------
// 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.
//---------------------------------------------------------------------------------------
	PDFNet::Initialize();
	
	// Relative path to the folder containing the test files.
	$input_path = getcwd()."/../../TestFiles/";
	$output_path = $input_path."Output/";

	// Example 1: 
	// Iterate over all form fields in the document. Display all field names.

	$doc = new PDFDoc($input_path."form1.pdf");
	$doc->InitSecurityHandler();

	for($itr = $doc->GetFieldIterator(); $itr->HasNext(); $itr->Next()) 
	{
		echo nl2br("Field name: ".$itr->Current()->GetName()."\n");
		echo nl2br("Field partial name: ".$itr->Current()->GetPartialName()."\n");

		echo "Field type: ";
		$type = $itr->Current()->GetType();
		switch($type)
		{
		case Field::e_button: echo nl2br("Button"."\n"); break;
		case Field::e_text: echo nl2br("Text"."\n"); break;
		case Field::e_choice: echo nl2br("Choice"."\n"); break;
		case Field::e_signature: echo nl2br("Signature"."\n"); break;
		}

		echo nl2br("------------------------------\n");
	}
	
	$doc->Close();
	echo nl2br("Done.\n");

	// Example 2) Merge data from FDF

	echo nl2br("Merge data from FDF.\n");

	$doc = new PDFDoc($input_path."form1.pdf");
	$doc->InitSecurityHandler();

	$fdf_doc = new FDFDoc($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()->Put("NeedAppearances", false);

	$doc->Save(($output_path."form1_filled.pdf"), SDFDoc::e_linearized);

	// Now merge data from XFDF. First create a FDF document from a XFDF file, then
	// merge data from FDF.
	$xfdf_doc = FDFDoc::CreateFromXFDF($input_path."form1_data.xfdf");
	$doc->FDFMerge($fdf_doc);

	$doc->Save(($output_path."form1_filled_xfdf.pdf"), SDFDoc::e_linearized);

	$doc->Close();
	echo nl2br("Done.\n");

	// Example 3) Extract data to FDF
	
	echo nl2br("Extract data to FDF.\n");

	$in_doc = new PDFDoc($output_path."form1_filled.pdf");
	$in_doc->InitSecurityHandler();

	$doc = $in_doc->FDFExtract();
	$doc->SetPDFFileName("../form1.pdf");
	$doc->Save($output_path."form1_filled_data.fdf");

	// Now save the FDF document in XFDF format
	$doc->SaveAsXFDF($output_path."form1_filled_data.xfdf");
	
	$doc->Close();
	echo nl2br("Done.\n");

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

	for($itr = $doc->GetFieldIterator(); $itr->HasNext(); $itr->Next())
	{
		echo nl2br("Field name: ".$itr->Current()->GetName()."\n");
		echo nl2br("Field partial name: ".$itr->Current()->GetPartialName()."\n");

		echo nl2br("------------------------------\n");
	}
	
	$doc->Close();
	echo nl2br("Done.\n");

	// Example 5) Direct generation of FDF.
	
	$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");
	$doc->Close();
	echo nl2br("Done.\n");
	
	
?>