On 21.07.2009, at 4:07, Kelly Keenan wrote:
Have you figured out what is going on here? If not, can you please
file a bug and send me the bug number? If possible, it would be
really handy to have a very simple project with this same problem.
OK, I've found a time to recall what and how I did it. Finally I've
discovered the reason. Here is the actions sequence, leading to the bug.
- create a new project; I used Cocoa-FPC template, recently created by
Jonas Maebe (see the list for the link) though I don't think the
template itself does a matter.
- click "Build&Go" to compile, though I don't think it does a matter
too. I'm just too lazy to repeat it all again without that step. I
just remember that I did it earlier.
- open Interface Builder;
- select Object Controller in the Library and drag it into "Main
Menu.XIB" window;
- PRINCIPAL STEPS ARE HERE:
- rename the Object Controller instance, i.e. click on the "Object"
name label below the blue cube, causing its inline editor appearance,
and type something. I used "AppController" name.
- DO NOT change "NSObject" class name at the top of Info page of the
Inspector.
- add a new action in the Actions panel of the Info page, and call it
"onClick:".
- drag a push button from Library to the Window
- connect (Ctrl+Mouse Down) the push button instance with
AppController object in the XIB window; a popup list appears, where we
choose "onClick:" action.
- CHANGE the AppController object instance CLASS NAME to
"AppController" (was NSObject) in the Object Inspector; the action, we
just created DISAPPEARS, so "Actions panel is EMPTY.
- right-click on the AppController object instance in the XIB window
and look at the actions list - we can see, that onClick: action still
exists and it's still connected to the push button; screenshot is here:
http://home.bokovikov.com/etc/mac/xcode/IB-bug_01.png
- click on the cross and disconnect this action from button; now it's
empty
- add new "onClick:" action in the "Actions" panel of Object Info page.
- we can see, that AppController popup window has two actions, but
Info page now contains only one action.
http://home.bokovikov.com/etc/mac/xcode/IB-bug_02.png
That's all, what I did now. Earlier I yet created appropriate code in
the AppController.m file. Finally I came to the situation, when
"Actions" page in the Inspector contained one "onClick:" action
(though AppController's popup shew two actions) and "Minus" button was
grayed. Now I did not reproduce it, but I believe the problem reason
is revealed pretty enough. I demonstrated it all for object actions,
though the same situation is with object outlets.
Fixing this bug I'd suggest to save all existing actions and outlets,
rather than remove them completely, because initial class is NSObject,
which is the base one, so any actions, added to NSObject definitely
can be added to any of its descendants. Indeed, it would be more
advanced solution, when a warning will be generated, when object class
is downgraded. Though I can't provide an exact sample, as I'm not so
skilled yet in XCode/Cocoa.
Thanks.
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