Re: PDFview and Password protected PDFs

FROM : John Calhoun
DATE : Thu Apr 26 23:44:31 2007

On Apr 26, 2007, at 2:32 PM, Alexander Griekspoor wrote:
> I use a PDFview in which I preview PDF files (i.o.w. iterative load 
> PDFs in the same PDFView) but ran into a problem. Whenever I load a 
> password protected PDF I get a red view with a password field. 
> However when I load another unprotected PDF without adding the 
> password for the previous one first, it won't load.


The problem is that the PDFView (in Tiger) doesn't get rid of the 
password UI in -[PDFView setDocument:] as you would expect.  This is a 
bug (fixed in Leopard).

Your choices are to:

1) create a new PDFView for new documents (this is what Preview does 
and why we never ran into this bug in Tiger development).

2) pre-flight the PDFDocument's before calling -[PDFView 
setDocument:].  In short, don't allow locked PDFDocuments (perhaps 
bring up your own password UI in order to unlock the PDFDocument 
before [PDFView setDocument:]).

3) take the risky approach of calling private PDFView methods (be sure 
to call -[respondsToSelector:] first).  You might try: - (BOOL) 
[PDFView passwordUIDisplayed] and -[[PDFView documentView] 
removePasswordView].

john calhoun—_______________________________________________

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