Yesterday I wrote a tool to show the Javascript code in a PDF. Some
widgets did have Javascript, but it wasn't possible to access this with
our methods (e.g. getK()), only by accessing the COSDictionary structure
directly. The reason is that these widgets have a getActions() method
that return PDAnnotationAdditionalActions and not
PDFormFieldAdditionalActions. Here's my code, which shows my workaround
(at the line with "Merkwürdig"):
if (field instanceof PDTerminalField)
{
PDTerminalField termField = (PDTerminalField) field;
for (PDAnnotationWidget widget : termField.getWidgets())
{
PDAction action = widget.getAction();
if (action instanceof PDActionJavaScript)
{
System.out.println(field.getFullyQualifiedName() +
": " + action.getClass().getSimpleName() + " js widget action:\n" +
action.getCOSObject());
printPossibleJS(action);
}
PDAnnotationAdditionalActions actions =
widget.getActions();
if (actions != null)
{
System.out.println(field.getFullyQualifiedName() +
": " + actions.getClass().getSimpleName() + " js widget actionS:\n" +
actions.getCOSObject());
// Merkwürdig, wieso bekomme ich nicht
PDFormFieldAdditionalActions sondern ein PDAnnotationAdditionalActions
in dem ein K ist aber kein getK() ?
PDFormFieldAdditionalActions ffActions = new
PDFormFieldAdditionalActions((COSDictionary) actions.getCOSObject());
printPossibleJS(ffActions.getK());
printPossibleJS(ffActions.getC());
printPossibleJS(ffActions.getF());
printPossibleJS(ffActions.getV());
}
}
}
....
private void printPossibleJS(PDAction kAction)
{
if (kAction instanceof PDActionJavaScript)
{
PDActionJavaScript jsAction = (PDActionJavaScript) kAction;
String jsString = jsAction.getAction();
if (!jsString.contains("\n"))
{
// Sonst erscheint in Netbeans nichts?!
jsString = jsString.replaceAll("\r",
"\n").replaceAll("\n\n", "\n");
}
System.out.println(jsString);
System.out.println();
}
}
So I'm wondering if this is a bug in the code, or rather the problem
that widgets are used both for annotations and fields?
Tilman
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