I am trying to limit files with certain UTI's from dropping into a table view.
Here's my code so far:
// in the init method I set the registerForDraggedTypes with NSURLPboardType
-(NSDragOperation) tableView: (NSTableView*)tv
validateDrop: (id <NSDraggingInfo>)info
proposedRow: (int)row
proposedDropOperation: (NSTableViewDropOperation)op
{
NSDragOperationdragOp = NSDragOperationCopy;
// if drag source is self its a move unless the option key is pressed
if ([info draggingSource] == playlistView) {
NSEvent *currentEvent = [NSApp currentEvent];
int optionKey = [currentEvent modifierFlags] & NSAlternateKeyMask;
if (optionKey == 0) dragOp = NSDragOperationMove; // option not pressed
return dragOp;
}
// if drag source is not self then... OUTSIDE FILE BEING DRAGGED IN
NSArray*firstType = [NSArrayarrayWithObjects:NSURLPboardType, nil];
if([[[info draggingPasteboard] types] containsObject:NSURLPboardType] ) {
NSString *availableType = [[info draggingPasteboard]
availableTypeFromArray:firstType];
NSString *fileType;
NSURL *url;
NSArray *filesList = [[info draggingPasteboard]
propertyListForType:availableType];
for (int i=0; i<[filesList count]; ++i) {
url = [filesList objectAtIndex:i];
if ([url getResourceValue:&fileType forKey:NSURLTypeIdentifierKey
error:NULL]) {
NSLog(@"%@", fileType); // just print the type for now
}
}
}
[tv setDropRow:row dropOperation:NSTableViewDropAbove];
return dragOp;
}
So as I'm sure you've noticed, I'm not changing the dragOp for an outside file
being dragged in. For some reason I keep getting an unrecognized selector
error with the getResourceValue:forKey:error: method. I'm completely stumped,
any help would be greatly appreciated.
GW
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