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- Here's an excerpt from the NeXT Nugget news digest, talking about
- aspects of NeXTStep 3.0 which developers ought to take into account.
- (I don't think WonderFormat is a MIME type ;-)
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- - Filter services
- A Filter service is a new 3.0 type of Service which has no menu item
- but supports the ability to convert a piece of data from one type to
- another. Every application can take advantage of filter services
- when opening files (via +typesFilterableTo: if it can open a standard
- type, like RTF) and when importing data via copy/paste or dragging
- (via +imagePasteboardTypes).
-
- Other applications can provide filter services: for example, if you
- have some code which converts your document format [the WonderFormat]
- to RTFD, then you should provide this functionality as a filter
- service. Another application which understands RTFD but not
- WonderFormat can still import WonderFormat documents and the filter
- service will do the work of the conversion. The other advantage of
- providing a filter to ascii is that your documents then become
- indexable by Digital Librarian. See the 3.0 Appkit Release Notes and
- the Pasteboard spec sheet for more information on:
- +typesFilterableTo:, +newByFilteringFile:, +newByFilteringData:,
- +newByFilteringTypesInPasteboard:.
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