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interactive/form_textfield_fill_with_js

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/* $Id: form_textfield_fill_with_js.java,v 1.8 2013/01/15 10:12:00 stm Exp $

 * Form text field filling with JavaScript:

 * Fill a form text field with a value using JavaScript

 *

 * Create a text field for displaying a date. Using a JavaScript action display

 * the current date in the form field whenever the page is opened.

 *

 * Required software: PDFlib/PDFlib+PDI/PPS 9

 * Required data: none

 */

package com.pdflib.cookbook.pdflib.interactive;


import com.pdflib.pdflib;

import com.pdflib.PDFlibException;


public class form_textfield_fill_with_js

{

    public static void main (String argv[])

    {

    /* This is where the data files are. Adjust as necessary */

    String searchpath = "../input";

    String outfile = "form_textfield_fill_with_js.pdf";

    String title = "Form Text Field Filling with JavaScript";


    pdflib p = null;


    String optlist;

    int font, monospaced_font;

    double width=160, height=30, llx = 10, lly = 700;


    try {

        p = new pdflib();


        /* This means we must check return values of load_font() etc. */

        p.set_option("errorpolicy=return");


        p.set_option("searchpath={" + searchpath + "}");


        if (p.begin_document(outfile, "") == -1)

            throw new Exception("Error: " + p.get_errmsg());


        p.set_info("Creator", "PDFlib Cookbook");

        p.set_info("Title", title + " $Revision: 1.8 $");


        font = p.load_font("Helvetica", "winansi", "");

        if (font == -1)

            throw new Exception("Error: " + p.get_errmsg());


        monospaced_font = p.load_font("Courier", "winansi", "");

        if (monospaced_font == -1)

            throw new Exception("Error: " + p.get_errmsg());



        /* --------------------------------------------------------------------

         * Define a JavaScript script for entering the current date in the form

         * field "date" and supply it as the open action when starting the page

         * --------------------------------------------------------------------

         *

         * First create an action of type JavaScript. With the "script" option

         * in the option list of the action define a JavaScript snippet which

         * displays the current date in the "date" text field in the format

         * "mm dd yyyy", e.g. "Sep 11 2007".

         */

        optlist = "script={var d = util.printd('mmm dd yyyy', new Date());\n" +

            "var date = this.getField('date');\ndate.value = d;}";


        int show_date = p.create_action("JavaScript", optlist);


        /* In the second step create the page. In the option list supply

         * the "action" option which attaches the "show_date" action created

         * above to the page open event.

         */

        p.begin_page_ext(0, 0, "width=a4.width height=a4.height action={open " +

            show_date + "}");


        /* ---------------------------------

         * Create the form text field "date"

         * ---------------------------------

         *

         * Create a form field of type "textfield" called "date" with a

         * background color of light blue and a black border.

         * Allow a maximum of 11 characters to be entered (maxchar=11).

         * The characters are not moved out of the field if the field size is

         * reached (scrollable=false).

         * Display equidistant subfields for each character (comb=true).

         */

        optlist = "backgroundcolor={rgb 0.95 0.95 1} bordercolor={gray 0} " +

            "maxchar=11 scrollable=false comb=true font=" + monospaced_font +

            " fontsize=18";


        p.create_field(llx, lly, llx + width, lly + height, "date", "textfield",

            optlist);

        lly-=40;


        p.setfont(font, 12);

        p.fit_textline("When opening the page the current date is " +

            "automatically displayed in the field.", llx, lly, "");


        p.end_page_ext("");


        p.end_document("");


        } catch (PDFlibException e) {

            System.err.print("PDFlib exception occurred:\n");

            System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() +

                ": " + e.get_errmsg() + "\n");

        } catch (Exception e) {

            System.err.println(e.getMessage());

        } finally {

            if (p != null) {

                p.delete();

            }

        }

    }

}