31 lines
1.4 KiB
Mathematica
31 lines
1.4 KiB
Mathematica
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// Turn the document contents into a single savable lump of data
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- (NSData *)dataOfType:(NSString *)typeName error:(NSError **)outError {
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#pragma unused(typeName)
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// Produce the data lump:
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NSData * retval = [NSKeyedArchiver archivedDataWithRootObject:model];
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// If the lump is nil something went wrong
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// fill out the error object to explain what wrent wrong
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if ( outError != NULL ) {
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// The sender wanted an error reported. If there
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// was a problem, fill in an NSError object
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if (retval == nil) {
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// The error object should include an (unhelpful)
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// explanation of what happened
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NSDictionary * userInfoDict = [NSDictionary dictionaryWithObjectsAndKeys:
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@"Internal error formatting data", NSLocalizedDescriptionKey,
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@"Archiving of data failed. Probably a bug.", NSLocalizedFailureReasonErrorKey,
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@"There's nothing you can do.", NSLocalizedRecoverySuggestionErrorKey, nil];
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*outError = [NSError errorWithDomain:LinearInternalErrorDomain
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code:linErrCantFormatDocumentData
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userInfo:userInfoDict];
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} else {
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// No problem. Don't supply an error object.
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*outError = nil;
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}
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}
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return retval;
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}
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