[jira] [Created] (PDFBOX-1982) Standardise AcroForm Fields

["John Hewson (JIRA)" <ji...@apache.org>]

John Hewson created PDFBOX-1982:
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             Summary: Standardise AcroForm Fields
                 Key: PDFBOX-1982
                 URL: https://issues.apache.org/jira/browse/PDFBOX-1982
             Project: PDFBox
          Issue Type: Improvement
            Reporter: John Hewson


While working on adding the patch in PDFBOX-1847 I noticed that the digital signature form field, PDSignature is deprecated, having been replaced by PDSignatureField.

Currently some aspects of the fields do not correspond with the PDF specification, in particular the hierarchy of the fields and their naming. There are currently 43 open issues for the AcroForm component and no issues have been closed since 2011, so I've attempted some basic refactoring to give us a clean slate for adding new features and fixing old bugs.

Here's the current hierarchy of fields in PDFBox:

PDField
    PDChoiceButton
        PDCheckbox
        PDRadioCollection
    PDPushButton
    PDSignatureField
    PDUnknownField
    PDVariableText
        PDChoiceField
        PDTextbox

And here's the actual hierarchy from the PDF specification:

Field
    Button
        Check Box
        Radio Button
        Pushbutton
    Text
    Choice
        List Box
        Combo Box
    Signature

Note that PDPushButton is in the wrong place in the hierarchy and List Box and Combo Box are missing.



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