Re: Double initialization of custom (text) views in Gorm files

[Gregory John Casamento]

Actually, sorry... from looking at this it seems that you're correct:

http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaViewsGuide/SubclassingNSView/chapter_6_section_2.html

I don't think that anyone is currently relying on that functionality within GNUstep.  I might make some of these changes as well so that I can test them a bit and make certain that they reflect what is on Cocoa.

 

Gregory Casamento -- Principal Consultant - OLC, Inc
# GNUstep Chief Maintainer

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From: Gregory John Casamento <address@hidden>
To: Wolfgang Lux <address@hidden>; address@hidden
Sent: Thursday, November 20, 2008 7:44:03 PM
Subject: Re: Double initialization of custom (text) views in Gorm files

Wolfgang,

These are what are known as "designated initializers" they are called on objects when a nib is instantiated on instances of custom classes only.   This is what is described in Apple's documentation and fits with observed behavior on OpenStep and on Cocoa.

If we can find a cleaner implementation for this, then I would suggest that we do that rather than removing the code.

Thanks, GC
Gregory Casamento -- Principal Consultant - OLC, Inc
# GNUstep Chief Maintainer

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From: Wolfgang Lux <address@hidden>
To: address@hidden
Sent: Thursday, November 20, 2008 4:25:05 PM
Subject: Double initialization of custom (text) views in Gorm files

The -initWithCoder: method of GSTextViewTemplate in GSNibTemplates invokes
the -initWithFrame:textContainer: initializer on self if the custom subclass
of NSTextView implements that method. Unfortunately, this leads to a double
initialization of instances and, in particular, any customization applied to
the text view in the Gorm file will be lost. If anybody is relying on this
weird semantics, I just wanted to inform you that I intend to remove that
code, since it is definitely wrong (and neither compatible with the Cocoa
documentation nor Apple's implementation). The correct way to initialize
custom subclasses of NSTextView loaded from a nib file is either via
-awakeFromNib or by providing a palette for Interface Builder so that the
additional attributes of the custom class can be changed and archived. (Is
this possible in Gorm?)

Similar code is present in GSViewTemplate, GSTextTemplate, GSMenuTemplate,
GSControlTemplate, and GSObjectTemplate and I intend to remove that, too.

Wolfgang



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