form_fields/form_textfield_input_check
Check whether the date entered in a form field of type "textfield" has been formatted correctly.
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/*
* Form text field input check:
* Check if the date entered in a form field of type "textfield" has been
* formatted correctly.
*
* Create a text field for displaying a date and check if the input has been
* correctly formatted as "mmm dd yyyy, e.g. "Apr 15 2020".
*
* Required software: PDFlib/PDFlib+PDI/PPS 9
* Required data: none
*/
package com.pdflib.cookbook.pdflib.form_fields;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;
public class form_textfield_input_check
{
public static void main (String argv[])
{
/* This is where the data files are. Adjust as necessary */
String searchpath = "../input";
String outfile = "form_textfield_input_check.pdf";
String title = "Form Text Field Input Check";
pdflib p = null;
int exitcode = 0;
String optlist;
int font, monospaced_font;
double fontsize, ascender, descender;
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);
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());
/* Start page */
p.begin_page_ext(0, 0, " width=a4.width height=a4.height");
/* Adjust the font size to match the field height. Then, descrease the
* font size by e.g. 20% to leave some empty space from the field
* borders.
*/
ascender = p.info_font(monospaced_font, "ascender", "fontsize=" +
height);
descender = p.info_font(monospaced_font, "descender", "fontsize=" +
height);
fontsize = (ascender - descender) * 0.8;
/* For a correct formatting of the date, define a keystroke and a
* formatting action for the date to be checked for compliance to the
* format "mmm dd yyyy".
*/
int keystroke_action = p.create_action("JavaScript",
"script={AFDate_KeystrokeEx('mmm dd yyyy'); }");
/* Create a form field of type "textfield" called "date" with the
* JavaScript action supplied in the "action" option
*/
optlist = "backgroundcolor={rgb 0.95 0.95 1} bordercolor={gray 0} " +
"currentvalue={Apr 15 2020} maxchar=11 comb=true " +
"scrollable=false tooltip={Enter a date} font=" + monospaced_font +
" fontsize=" + fontsize +
" action={keystroke=" + keystroke_action + "}";
p.create_field(llx, lly, llx + width, lly + height, "date", "textfield",
optlist);
lly-=40;
p.setfont(font, 12);
p.fit_textline("Change the date.", llx, lly, "");
p.fit_textline("After pressing \"Enter\", the date is checked to be " +
"correctly formatted as \"mmm dd yyy\".", llx, lly-=20, "");
p.end_page_ext("");
p.end_document("");
} catch (PDFlibException e) {
System.err.println("PDFlib exception occurred:");
System.err.println("[" + e.get_errnum() + "] " + e.get_apiname()
+ ": " + e.get_errmsg());
exitcode = 1;
} catch (Exception e) {
System.err.println(e);
exitcode = 1;
} finally {
if (p != null) {
p.delete();
}
System.exit(exitcode);
}
}
}