QSFormulaType objects don't add strings to the pasteboard

Try doing:

=1+1 ⇥ Paste

Nothing happens, because the =1+1 object is a QSFormulaType object, and doesn't have any other (useable) types (like NSStringPboardType).

In the future, the QSObjectHandlers protocol should also be able to implement the NSPasteboardWriting and NSPasteboardReading protocols, so that when reading/writing to the pasteboard, QSObjectHandlers themselves can just provide the right content.

Here's a proof of concept, using the current mac OS X <10.5 method, which I want to remove soon:

    // check if the primary type handler has its own method to add to the pboad
    id <QSObjectHandler> handler = [self handlerForType:[self primaryType] selector:@selector(putObject:onPasteboard:forType:)];
    if (handler) {
        [handler putObject:self onPasteboard:pboard forType:[self primaryType]];
    }

In the future, all the NSPasteboardWriting/Reading protocol methods would just call e.g.

- (NSArray *)writableTypesForPasteboard:(NSPasteboard *)pboard {
        NSMutableArray *types = [get the normal types]

    // check if the primary type handler has its own method to add to the pboad
    id <QSObjectHandler> handler = [self handlerForType:[self primaryType] selector:@selector(writableTypesForPasteboard:)];
    if (handler) {
        [types addObjectsFromArray:[handler writableTypesForPasteboard:pboard]];
    }
      return types;
}

I want to hold off on doing this until we've safely moved to OS X 10.5+ pasteboard methods

quicksilver / Quicksilver

QSFormulaType objects don't add strings to the pasteboard #2899