Re: NSDocument custom file Package or URL override?
Re: NSDocument custom file Package or URL override?
- Subject: Re: NSDocument custom file Package or URL override?
- From: Markus Spoettl <email@hidden>
- Date: Wed, 15 May 2013 19:27:07 +0200
On 5/15/13 5:14 PM, Trygve Inda wrote:
My document format needs to look like:
File (actually a directory marked as a package)
-- MyData.plist
-> Images (directory)
----> Image1.png
----> Image2.png
-> Data (directory)
----> Data1.dat
----> Data2.dat
-> Icons (directory)
----> Icon1.png
----> Icon1.png
In my NSDocument subclass, Overriding:
- (BOOL)readFromFileWrapper:(NSFileWrapper *)fileWrapper
ofType:(NSString *)typeName error:(NSError **)outError
Doesn't seem to be the right thing to do since it seems to want to put all
the files in a single flat directory within the package
It's the right place. You'll get a filewrapper representing the document-package
directory (the root). From there, you can query the root wrapper for
sub-wrappers using -fileWrappers (use -isDirectory and -isRegularFile to find
out if a wrapper contains other wrappers).
For writing the document, you'll overwrite -fileWrapperOfType:error: and return
a root wrapper that contains your entire package structure. You can construct
the interior of your package format to your liking, you can also add directories
by adding a file wrapper that represents a directory - created via
-initDirectoryWithFileWrappers:
The NSDocument guide contains a section about using wrappers and demos the basics:
http://developer.apple.com/library/mac/#documentation/DataManagement/Conceptual/DocBasedAppProgrammingGuideForOSX/AdvancedTopics/AdvancedTopics.html
Regards
Markus
--
__________________________________________
Markus Spoettl
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