How do you add context senstive menu to NSOutlineView (ie right click menu)

Question

How do you add the ability to right click on a row in an NSOutlineView so you can say delete an object or some other activity. (ie Like when you right click on a folder in the Apple Mail app)

I think I am half way there, I have a subclass of NSOutlineView that allows me to catch the right click and display a context menu based on the selected row rather than the row the mouse is clicking on.

@implementation NSContextOutlineView      - (NSMenu *)defaultMenu {         if([self selectedRow] < 0) return nil;         NSMenu *theMenu = [[[NSMenu alloc] initWithTitle:@"Model browser context menu"] autorelease];         [theMenu insertItemWithTitle:@"Add package" action:@selector(addSite:) keyEquivalent:@"" atIndex:0];         NSString* deleteItem = [NSString stringWithFormat: @"Remove '%i'", [self selectedRow]];         [theMenu insertItemWithTitle: deleteItem action:@selector(removeSite:) keyEquivalent:@"" atIndex:1];         return theMenu;     }      - (NSMenu *)menuForEvent:(NSEvent *)theEvent {         return [self defaultMenu];       } @end 

Sorry if the answer is obvious I just cant find any help on this online or in the documentation.

Thanks to Void for the answer, it lead me to using this:

- (NSMenu *)menuForEvent:(NSEvent *)theEvent {     NSPoint pt = [self convertPoint:[theEvent locationInWindow] fromView:nil];     id item = [self itemAtRow: [self rowAtPoint:pt]];     return [self defaultMenuFor: item]; } 

Answer 1

In your menuForEvent method you can find out which row the click occurred on. You can pass that as a parameter to your defaultMenu method -- maybe call it defaultMenuForRow:

-(NSMenu*)menuForEvent:(NSEvent*)evt  {     NSPoint pt = [self convertPoint:[evt locationInWindow] fromView:nil];     int row=[self rowAtPoint:pt];     return [self defaultMenuForRow:row]; } 

Now you can build the menu for the row you found in the event...

-(NSMenu*)defaultMenuForRow:(int)row {     if (row < 0) return nil;      NSMenu *theMenu = [[[NSMenu alloc]                                  initWithTitle:@"Model browser context menu"]                                  autorelease];     [theMenu insertItemWithTitle:@"Add package"                            action:@selector(addSite:)                     keyEquivalent:@""                           atIndex:0];     [theMenu insertItemWithTitle:[NSString stringWithFormat:@"Remove '%i'", row]                            action:@selector(removeSite:)                     keyEquivalent:@""                           atIndex:0];     // you'll need to find a way of getting the information about the      // row that is to be removed to the removeSite method     // assuming that an ivar 'contextRow' is used for this     contextRow = row;      return theMenu;         } 

Also, as already mentioned in the comments, you really shouldn't use the NS-prefix on your own classes. There is a potential for a clash in the future plus it will confuse everybody that is looking at your code - including yourself :)

Hope this helps...