Emanuele Paterna,
Emanuele Paterna wrote
> I've notice a strange behaviour signing an existing invisible signature
> field. I've noticed that the field was created multiple times every time i
> try to sign it.
> I think is due to preClose method that is based on a wrong condition that
> recreate the field if the field passed is invisible
>> if (fieldExists) { //<--- This create the problem
> Why not use this below?
>> if (!isNewField()) { //condition changed to evicting create a new
>> signature field
That would break another use case, namely the creation of a new invisible
signature (not created using a setVisibleSignature call with collapsed
rectangle parameter but using the default behavior).
Unfortunately the code contains some assumptions not reflected in the names
of the methods:
isNewField() is true if and only if the field name was set using the
setVisibleSignature(pageRect, page, fieldName) method. Especially it is NOT
true if a new invisible signature field is to be created using the unique
field name assigned in the constructor.
To properly process those invisible signatures with automatically generated
field names, therefore, the code in preClose assumes that all invisible
signatures are added in new fields.
Normally this assumption is not as bad as it sounds because normally
predefined, empty signature fields are added to a document to show the user
where to sign, and consequently are visible. Therefore, hardly anyone ever
stumbles here... ;)
That being said, some clean-up would be appropriate to also allow for
invisible predefined empty signature fields. Your proposal merely has to be
extended (constructor already setting newField to true,
setVisibleSignature(fieldName) explicitly setting it to false) to work in
all relevant use cases.
Regards, Michael
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