Example usage for com.lowagie.text.pdf TextField setMaxCharacterLength

Introduction

In this page you can find the example usage for com.lowagie.text.pdf TextField setMaxCharacterLength.

Prototype

public void setMaxCharacterLength(int maxCharacterLength)

Source Link

Document

Sets the maximum length of the field's text, in characters.

Usage

From source file:com.geek.tutorial.itext.acroform.TextFieldForm.java

License:Open Source License

public TextFieldForm() throws Exception {
    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("TextFieldForm.pdf"));
    document.open();/*w ww  .  j a  v a2  s. c o  m*/

    PdfPTable table = new PdfPTable(2);
    table.getDefaultCell().setPadding(5f); // Code 1, will only affect empty field
    table.setHorizontalAlignment(Element.ALIGN_LEFT);
    PdfPCell cell;

    // Code 2, add name TextField      
    table.addCell("Name");
    TextField nameField = new TextField(writer, new Rectangle(0, 0, 200, 10), "nameField");
    nameField.setBackgroundColor(Color.WHITE);
    nameField.setBorderColor(Color.BLACK);
    nameField.setBorderWidth(1);
    nameField.setBorderStyle(PdfBorderDictionary.STYLE_SOLID);
    nameField.setText("");
    nameField.setAlignment(Element.ALIGN_LEFT);
    nameField.setOptions(TextField.REQUIRED);
    cell = new PdfPCell();
    cell.setMinimumHeight(10);
    cell.setCellEvent(new FieldCell(nameField.getTextField(), 200, writer));
    table.addCell(cell);

    // force upper case javascript
    writer.addJavaScript("var nameField = this.getField('nameField');" + "nameField.setAction('Keystroke',"
            + "'forceUpperCase()');" + "" + "function forceUpperCase(){"
            + "if(!event.willCommit)event.change = " + "event.change.toUpperCase();" + "}");

    // Code 3, add empty row
    table.addCell("");
    table.addCell("");

    // Code 4, add age TextField
    table.addCell("Age");
    TextField ageComb = new TextField(writer, new Rectangle(0, 0, 30, 10), "ageField");
    ageComb.setBorderColor(Color.BLACK);
    ageComb.setBorderWidth(1);
    ageComb.setBorderStyle(PdfBorderDictionary.STYLE_SOLID);
    ageComb.setText("12");
    ageComb.setAlignment(Element.ALIGN_RIGHT);
    ageComb.setMaxCharacterLength(2);
    ageComb.setOptions(TextField.COMB | TextField.DO_NOT_SCROLL);
    cell = new PdfPCell();
    cell.setMinimumHeight(10);
    cell.setCellEvent(new FieldCell(ageComb.getTextField(), 30, writer));
    table.addCell(cell);

    // validate age javascript
    writer.addJavaScript("var ageField = this.getField('ageField');"
            + "ageField.setAction('Validate','checkAge()');" + "function checkAge(){" + "if(event.value < 12){"
            + "app.alert('Warning! Applicant\\'s age can not" + " be younger than 12.');" + "event.value = 12;"
            + "}}");

    // add empty row
    table.addCell("");
    table.addCell("");

    // Code 5, add age TextField
    table.addCell("Comment");
    TextField comment = new TextField(writer, new Rectangle(0, 0, 200, 100), "commentField");
    comment.setBorderColor(Color.BLACK);
    comment.setBorderWidth(1);
    comment.setBorderStyle(PdfBorderDictionary.STYLE_SOLID);
    comment.setText("");
    comment.setOptions(TextField.MULTILINE | TextField.DO_NOT_SCROLL);
    cell = new PdfPCell();
    cell.setMinimumHeight(100);
    cell.setCellEvent(new FieldCell(comment.getTextField(), 200, writer));
    table.addCell(cell);

    // check comment characters length javascript
    writer.addJavaScript("var commentField = " + "this.getField('commentField');" + "commentField"
            + ".setAction('Keystroke','checkLength()');" + "function checkLength(){"
            + "if(!event.willCommit && " + "event.value.length > 100){" + "app.alert('Warning! Comment can not "
            + "be more than 100 characters.');" + "event.change = '';" + "}}");

    // add empty row
    table.addCell("");
    table.addCell("");

    // Code 6, add submit button   
    PushbuttonField submitBtn = new PushbuttonField(writer, new Rectangle(0, 0, 35, 15), "submitPOST");
    submitBtn.setBackgroundColor(Color.GRAY);
    submitBtn.setBorderStyle(PdfBorderDictionary.STYLE_BEVELED);
    submitBtn.setText("POST");
    submitBtn.setOptions(PushbuttonField.VISIBLE_BUT_DOES_NOT_PRINT);
    PdfFormField submitField = submitBtn.getField();
    submitField.setAction(PdfAction.createSubmitForm("http://www.geek-tutorials.com/java/itext/submit.php",
            null, PdfAction.SUBMIT_HTML_FORMAT));
    cell = new PdfPCell();
    cell.setMinimumHeight(15);
    cell.setCellEvent(new FieldCell(submitField, 35, writer));
    table.addCell(cell);

    // Code 7, add reset button
    PushbuttonField resetBtn = new PushbuttonField(writer, new Rectangle(0, 0, 35, 15), "reset");
    resetBtn.setBackgroundColor(Color.GRAY);
    resetBtn.setBorderStyle(PdfBorderDictionary.STYLE_BEVELED);
    resetBtn.setText("RESET");
    resetBtn.setOptions(PushbuttonField.VISIBLE_BUT_DOES_NOT_PRINT);
    PdfFormField resetField = resetBtn.getField();
    resetField.setAction(PdfAction.createResetForm(null, 0));
    cell = new PdfPCell();
    cell.setMinimumHeight(15);
    cell.setCellEvent(new FieldCell(resetField, 35, writer));
    table.addCell(cell);

    document.add(table);
    document.close();
}