NSSavePanel's required/allowed types

• Jonas S NSSavePanel's required/allowed types Oct 03 2007, 19:14
  Hello,
  
  I have searched archive but could not find exactly what I want.
  
  I have a NSSavePanel in my program for saving images. It has an accessory
  view with NSPopUpButton to choose image type (similar to Apple Preview). And
  I want to implement exactly the same behaviour like Preview does: when popup
  selection is changed, required-allowed files types (extension) for panel
  must be changed.
  
  Using setAllowedFileTypes, setAllowsOtherFileTypes, setRequiredFileType
  combinations works fine, except in this situation: lets say currently file
  name is myImage.tiff and popup shows "TIFF". I rename file to
  MyImage.jpgand change popup to JPEG. File name is converted into
  MyImage.jpg.jpg.
  
  The question is - how to avoid extra extension in specified situation?
  Preview does not have such a problem.
  
  By the way, when using TIFF and JPEG allowed types should be tiff, tif and
  jpeg, jpg. If type would be only one (for example png) then only
  setRequiredFileType is needed to call and that's all. But more than one type
  causes mentioned problems.
  
  Any help would be very appreciate.
  
  p.s. sorry for my poor English.
  
  Jonas S.
• Apparao Re: NSSavePanel's required/allowed types Oct 04 2007, 08:19
  How about - (BOOL)panel:(id)sender isValidFilename:(NSString *)
  filename Panel delegate method?
  
  - Apparao.
  
  On Oct 3, 2007, at 10:44 PM, Jonas S wrote:
  
  

  > Hello,
  >
  > I have searched archive but could not find exactly what I want.
  >
  > I have a NSSavePanel in my program for saving images. It has an
  > accessory
  > view with NSPopUpButton to choose image type (similar to Apple
  > Preview). And
  > I want to implement exactly the same behaviour like Preview does:
  > when popup
  > selection is changed, required-allowed files types (extension) for
  > panel
  > must be changed.
  >
  > Using setAllowedFileTypes, setAllowsOtherFileTypes,
  > setRequiredFileType
  > combinations works fine, except in this situation: lets say
  > currently file
  > name is myImage.tiff and popup shows "TIFF". I rename file to
  > MyImage.jpgand change popup to JPEG. File name is converted into
  > MyImage.jpg.jpg.
  >
  > The question is - how to avoid extra extension in specified situation?
  > Preview does not have such a problem.
  >
  > By the way, when using TIFF and JPEG allowed types should be tiff,
  > tif and
  > jpeg, jpg. If type would be only one (for example png) then only
  > setRequiredFileType is needed to call and that's all. But more than
  > one type
  > causes mentioned problems.
  >
  > Any help would be very appreciate.
  >
  > p.s. sorry for my poor English.
  >
  > Jonas S.
  >
  
• Jonas S Re: NSSavePanel's required/allowed types Oct 04 2007, 08:54
  On 10/4/07, Apparao <apparao...> wrote:
  

  >
  > How about - (BOOL)panel:(id)sender isValidFilename:(NSString *)filename
  > Panel delegate method?
  >
  > - Apparao.
  >
  

  
  Nope. This is called after "- (NSString *)panel:(id)sender
  userEnteredFilename:(NSString *)filename confirmed:(BOOL)okFlag". And, of
  course, only when user clicks on Save. It is to late to change something,
  because I want, that user would not able to see "MyImage.jpg.jpg" after type
  popup change.
  
  Jonas S.
• Jonas S Re: NSSavePanel's required/allowed types Oct 04 2007, 09:30
  On 10/4/07, Apparao <apparao...> wrote:
  

  >
  > I guess, best option is Filename extension hiding. Did you tried with
  > Extension hiding methods in NSSavePanel
  > - Apparao
  >
  

  
  Actually not to good, because this eliminates ability to choose between jpg
  and jpeg.
  
  I would be able to solve my problem, if would be possibility to manually set
  file name is save panels field. But could not figure out how to do this.
  Even I am not sure if this possible at all.