Re: Xcode3.2-IB: No outlet/action section in inspector panel (identity)
Re: Xcode3.2-IB: No outlet/action section in inspector panel (identity)
- Subject: Re: Xcode3.2-IB: No outlet/action section in inspector panel (identity)
- From: Kevin Cathey <email@hidden>
- Date: Wed, 23 Sep 2009 11:04:01 -0500
wonder why the outlet/action UI was moved there but not the section
for adding/removing key paths, which is still in the inspector.
This is all the more confusing because you *can* add outlets to
First Responder in the Identity inspector.
The actions and outlets were moved to the Library for the following
reason: actions and outlets live on classes, not instances of classes.
The Classes tab represents all of the classes you can use in your
Interface Builder document, these come from your Xcode project, from
frameworks you've linked against, from manually added headers, from
plugins, and from the document itself (by setting the custom class on
an object, setting the type of an outlet/action, or using the new
Subclass menu item in the Classes tab). With this universal list of
classes, it makes sense to edit the class itself.
The User Defined Runtime Attributes (a dictionary of key/value pairs
that get passed to setValue:forKey: at runtime) live in the Identity
inspector because these runtime attributes exist per instance, not per
class. The Identity inspector in 3.2 truly reflects editing an
instance of a class only. Unlike actions/outlets, if I set the runtime
attributes for an instance of Foo, then switch to inspecting another
instance of Foo, those attributes will not be there. On the other
hand, with actions/outlets, if I add an outlet or action to an
instance of Foo, then it adds those outlets/action to all the
instances of Foo.
Now First Responder is an interesting item. First Responder is itself
not a class, so it does not make sense to put it in the Classes tab.
In Cocoa, First Responder really acts like an instance. The actions
for First Responder are attributes for it, and that is why they live
in the Attributes inspector for First Responder.
I hope that clears some of that up…
Kevin
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