Hi Martin,

Does something like the following not work for you?

NSTextAttachment *attachment = [[textView textStorage] 
attribute:NSAttachmentAttributeName atIndex:charIndex effectiveRange:NULL];

if (attachment)// Possibly check it’s of the kind of attachment you want to 
handle, too
return myCustomMenu;

I just did a quick test and this seemed to work fine with an image attachment. 
(As I say, I override -menuForEvent: for Tiger support, but I do pretty much 
the same there, only having to do the extra work and convert the event's 
-locationInWindow to an index manually.)

All the best,
Keith


----- Original Message ----
From: Martin Hewitson <[email protected]>
To: Keith Blount <[email protected]>
Cc: Martin Hewitson <[email protected]>; [email protected]
Sent: Tue, March 9, 2010 6:58:15 PM
Subject: Re: NSTextView attachments and context menus

Hi Keith,


> As (the other) Martin says, you can subclass NSTextView and override 
> -menuForEvent: for this, which is the best way of doing it if you need to 
> provide support for systems running versions of OS X earlier than Leopard. If 
> you only need to support Leopard or above, though, Leopard introduced a 
> delegate method which should do the same thing and obviate the need to 
> subclass:
> 
> - (NSMenu *)textView:(NSTextView *)view menu:(NSMenu *)menu forEvent:(NSEvent 
> *)event atIndex:(NSUInteger)charIndex
> 

Yes, I went down this route a little, but I was unable to figure out how to 
check for an attachment at that character index. I guess I need to look at this 
again. It seems like the elegant way to go since I only support Leopard and 
above.

Thanks again,

Martin

> So you should just be able to check for an attachment at charIndex and if one 
> is detected return your own custom menu; otherwise return the standard menu 
> that is passed in. (Note that I've never used this delegate method myself, 
> though, as my app still needs to support Tiger, so I use Martin's way.)
> 
> All the best,
> Keith
> 
> --- Original Message ---
> 
> Dear list,
> 
> I have an NSTextView which support dragging files in, either to create a link 
> to the file, or to add the file as an attachment. So far so good. 
> 
> Now I want to offer the user a context menu to perform operations on the 
> attachment (open, save, etc). So far I was unable to find a way to intercept 
> a 'right-click' on the nstextview to offer a custom context menu. What I did 
> get working is the single left-click version by implementing 
> textView:clickedOnCell:inRect:atIndex: in the text view's delegate. In that 
> method I create a context menu and show it at the mouse location using 
> NSMenu's popUpContextMenu:withEvent:forView:. That works, but with one 
> problem. The context menu that appears has two additional menu items: "Import 
> Image" and "Capture Selection from Screen". So I have three questions:
> 
> 1) Is there a better way to achieve what I want?
> 2) Where do these additional menu items come from? Are they services?
> 3) How could I do this with a right-click instead of a single-click?
> 
> I have another question about attachments, but I'll post that separately.
> 
> Thanking you in advance,
> 
> Martin
> 
> 
> 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Martin Hewitson
Albert-Einstein-Institut
Max-Planck-Institut fuer 
    Gravitationsphysik und Universitaet Hannover
Callinstr. 38, 30167 Hannover, Germany
Tel: +49-511-762-17121, Fax: +49-511-762-5861
E-Mail: [email protected]
WWW: http://www.aei.mpg.de/~hewitson
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



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