Re: Question about MVC
Re: Question about MVC
- Subject: Re: Question about MVC
- From: "I. Savant" <email@hidden>
- Date: Wed, 26 Apr 2006 08:49:44 -0400
It depends entirely on your goal, but no, there's nothing that
says you can't reference your controller. You can also use the
delegate methods of course.
In the case of a drawing application (like the Sketch example),
the view subclass used as the canvas asks its controller for any
"Shapes" that are under the cursor (by seeing if the cursor is within
the bounds of any shapes). From there it makes decisions what to do.
To me it sounds like the Sketch example is the best fit for your
project. It's in your /Developer/Examples folder. That one example
has a *wealth* of information in it on this topic.
My point was that the 'best course' depends entirely on what
exactly you're trying to accomplish. You *need to read the
documentation* to make an educated choice, though. The link I sent
last really is an excellent place to start in this case. ;-)
--
I.S.
On Apr 26, 2006, at 8:39 AM, Kenny Millar wrote:
I.S,
That's an interesting reply, and I understand exactly your point of
view.
However I too am currently pondering an MVC design, where I can't
think of
any other way but by having the view maintain an instance variable
of the
controller... let me explain.
My data contains a set of objects, which the view renders to the
screen.
When the user clicks in the view, whichever object he clicked on
becomes the
'current' object, and the controller needs to know which is the
'current'
object. How can you do that without the view telling the
controller, and how
can the view tell the controller without either i)using a delegate, or
ii)maintain an instance variable and sending messages to the
controller?
Maybe I just haven't grasped the full MVC picture yet, but I'm just
a newbie
so willing to be shown the right direction!
-Kenny
-----Original Message-----
From: cocoa-dev-bounces+kennymillar=email@hidden
[mailto:cocoa-dev-bounces+kennymillar=email@hidden] On
Behalf Of
I. Savant
Sent: 26 April 2006 13:24
To: Craig Dooley
Cc: email@hidden
Subject: Re: Question about MVC
Craig:
I think what you really mean (or need to mean, anyway), is that
you want to have your view tell your controller to initiate the send
(likely of data in your model layer).
<snip>
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