Re: [Rubycocoa-talk] copyWithZone

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Yes! It doesn't crash anymore and the row is added to the tableview. I
haven't had time yet to extensively play with this, but I guess it
will be ok.

Thanks :)

So just for reference, the code I have working now is:

def copyWithZone(zone)
  copy = self.class.allocWithZone(zone).init
  self.instance_variables.each do |iv|
    copy.instance_variable_set iv, self.instance_variable_get(iv)
  end
  return copy
end
objc_method :copyWithZone, "@@:^v"

I have no idea if this is a good idea, but could this be included in
something like oc_attachments or is that a bad idea?

Cheers,
Eloy

PS: Going out now, so I won't be able to reply directly.....

On 8/4/07, Laurent Sansonetti <lsa...@ap...> wrote:
> Okay, that's because your cell's object value is a NSObject class that
> doesn't implement copyWithZone. From your first message I see that you
> got a crash when trying to implement it.
>
> Can you try to call:
>
>    objc_method :copyWithZone, ''@@:^v"
>
> inside your Download class?
>
> Thanks,
> Laurent
>
> On Aug 4, 2007, at 6:18 PM, Eloy Duran wrote:
>
> > Yes, that's true. However the problem is not with the NSCell subclass
> > (DownloadCell) but with the NSObject subclass (Download) that holds
> > the values for the cell.
> >
> > If I don't implement the copyWithZone method it exits with a method
> > not found error:
> > 2007-08-04 18:15:29.644 HellaNZB[3861] *** -[Download copyWithZone:]:
> > selector not recognized [self = 0x158c2400]
> > /Users/eloy/Documents/DEVELOPMENT/RubyCocoa/Nzb/hellanzb/build/
> > Release/HellaNZB.app/Contents/Resources/rb_main.rb:22:in
> > `NSApplicationMain': NSInvalidArgumentException - *** -[Download
> > copyWithZone:]: selector not recognized [self = 0x158c2400]
> > (OSX::OCException)
> >       from /Users/eloy/Documents/DEVELOPMENT/RubyCocoa/Nzb/hellanzb/build/
> > Release/HellaNZB.app/Contents/Resources/rb_main.rb:22
> >
> > As you can see the class of the object that it's being called on is
> > Download which is a NSObject subclass.
> >
> > Otherwise I will create a small app and see if I can replicate the
> > problem.
> >
> > Ciao,
> > Eloy
> >
> > On 8/4/07, Laurent Sansonetti <lsa...@ap...> wrote:
> >> copyWithZone: is part of the NSCopying protocol, which NSObject
> >> doesn't implement but NSCell does.
> >>
> >> http://developer.apple.com/documentation/Cocoa/Reference/Foundation/Protocols/NSCopying_Protocol/Reference/Reference.html
> >>
> >> Laurent
> >>
> >> On Aug 4, 2007, at 6:05 PM, Eloy Duran wrote:
> >>
> >>> Hey Lrz,
> >>>
> >>> That would have been very nice! :)
> >>> However unfortunately NSObject doesn't implement copyWithZone...
> >>>
> >>>>> foo = OSX::NSObject.alloc.init
> >>> => #<OSX::NSObject:0x2e00e class='NSObject' id=0x159ac60>
> >>>>> foo.objc_methods.grep(/zone/i)
> >>> => ["zone"]
> >>>
> >>> Eloy
> >>>
> >>> On 8/4/07, Laurent Sansonetti <lsa...@ap...> wrote:
> >>>> Try:
> >>>>
> >>>>  def copyWithZone(zone)
> >>>>    copy = super_copyWithZone(zone)
> >>>>    # set your attributes to copy
> >>>>    # ex:
> >>>>    #    copy.title = self.title
> >>>>    return copy
> >>>>  end
> >>>>
> >>>> Laurent
> >>>>
> >>>> On Aug 4, 2007, at 5:53 PM, Eloy Duran wrote:
> >>>>
> >>>>> Hello,
> >>>>>
> >>>>> I'm trying to write my own custom NSCell for a tableview.
> >>>>> However, the table view tries to call #copyWithZone on my objects,
> >>>>> which are subclasses of NSObject. So I was trying to create a
> >>>>> working
> >>>>> #copyWithZone, but no matter what I do it always crashes
> >>>>> immediately.
> >>>>> For instance I have the following, but it doesn't even write to
> >>>>> the
> >>>>> console:
> >>>>>
> >>>>> def copyWithZone(zone)
> >>>>> puts 'COPY!'
> >>>>> copy = Download.allocWithZone(zone).init
> >>>>> self.instance_variables.each do |iv|
> >>>>>  copy.instance_variable_set iv, self.instance_variable_get(iv)
> >>>>> end
> >>>>> return copy
> >>>>> end
> >>>>>
> >>>>> Backtrace:
> >>>>>
> >>>>> #0  0x90a594c0 in objc_msgSend ()
> >>>>> #1  0xbfffc21c in ?? ()
> >>>>> #2  0x0002b850 in ocid_to_rbobj ()
> >>>>> #3  0x0002df10 in ocdata_to_rbobj ()
> >>>>> #4  0x0003051a in ovmix_register_ruby_method ()
> >>>>> #5  0x00031a98 in rbobj_call_ruby ()
> >>>>> #6  0x00031075 in ovmix_register_ruby_method ()
> >>>>> #7  0x0002f8b9 in init_ovmix ()
> >>>>> #8  0x927fa468 in -[NSObject(NSForwardInvocation) forward::] ()
> >>>>> #9  0x90a5ccc1 in _objc_msgForward ()
> >>>>> #10 0x932aed02 in -[NSCell _setContents:] ()
> >>>>> #11 0x932aec95 in -[NSCell setObjectValue:] ()
> >>>>> #12 0x9353abaa in -[_NSPlaceholderTextFieldPlugin
> >>>>> showValue:inObject:] ()
> >>>>> #13 0x93511593 in -[NSValueBinder showValue:inObject:] ()
> >>>>> #14 0x93510938 in -[NSValueBinder
> >>>>> _adjustObject:mode:observedController:observedKeyPath:context:editableState:adjustState
> >>>>> :]
> >>>>> ()
> >>>>> #15 0x9353a287 in -[NSValueBinder
> >>>>> updateTableColumnDataCell:forDisplayAtIndex:] ()
> >>>>> #16 0x9353a9ef in -[NSTextValueBinder
> >>>>> updateTableColumnDataCell:forDisplayAtIndex:] ()
> >>>>> #17 0x9353a1d6 in -[_NSBindingAdaptor
> >>>>> tableColumn:willDisplayCell:row:] ()
> >>>>> #18 0x93402a9d in -[NSTableView
> >>>>> _sendDelegateWillDisplayCell:forColumn:row:] ()
> >>>>> #19 0x933ea065 in -[NSTableView
> >>>>> _drawContentsAtRow:column:clipRect:]
> >>>>> ()
> >>>>> #20 0x933e902b in -[NSTableView drawRow:clipRect:] ()
> >>>>> #21 0x933e67ce in -[NSTableView drawRowIndexes:clipRect:] ()
> >>>>> #22 0x933e56a4 in -[NSTableView drawRect:] ()
> >>>>> #23 0x933113b1 in -[NSView _drawRect:clip:] ()
> >>>>> #24 0x9331040b in -[NSView
> >>>>> _recursiveDisplayAllDirtyWithLockFocus:visRect:] ()
> >>>>> #25 0x9330f473 in -[NSView
> >>>>> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView
> >>>>> :]
> >>>>> ()
> >>>>> #26 0x93310041 in -[NSView
> >>>>> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView
> >>>>> :]
> >>>>> ()
> >>>>> #27 0x93310041 in -[NSView
> >>>>> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView
> >>>>> :]
> >>>>> ()
> >>>>> #28 0x93310041 in -[NSView
> >>>>> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView
> >>>>> :]
> >>>>> ()
> >>>>> #29 0x93310041 in -[NSView
> >>>>> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView
> >>>>> :]
> >>>>> ()
> >>>>> #30 0x9330eb78 in -[NSThemeFrame
> >>>>> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView
> >>>>> :]
> >>>>> ()
> >>>>> #31 0x9330e362 in -[NSView
> >>>>> _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView
> >>>>> :]
> >>>>> ()
> >>>>> #32 0x9330dc8e in -[NSView displayIfNeeded] ()
> >>>>> #33 0x9330da32 in -[NSWindow displayIfNeeded] ()
> >>>>> #34 0x9335dd6c in _handleWindowNeedsDisplay ()
> >>>>> #35 0x9082dd6e in __CFRunLoopDoObservers ()
> >>>>> #36 0x9082ce10 in CFRunLoopRunSpecific ()
> >>>>> #37 0x9082cace in CFRunLoopRunInMode ()
> >>>>> #38 0x92dec8d8 in RunCurrentEventLoopInMode ()
> >>>>> #39 0x92debfe2 in ReceiveNextEventCommon ()
> >>>>> #40 0x92debe39 in BlockUntilNextEventMatchingListInMode ()
> >>>>> #41 0x93292465 in _DPSNextEvent ()
> >>>>> #42 0x93292056 in -[NSApplication
> >>>>> nextEventMatchingMask:untilDate:inMode:dequeue:] ()
> >>>>> #43 0x9328bddb in -[NSApplication run] ()
> >>>>> #44 0x9327fd2f in NSApplicationMain ()
> >>>>> #45 0x0003fc0d in ffi_call_SYSV ()
> >>>>> #46 0x0003fbae in ffi_call ()
> >>>>> #47 0x0003cfa0 in rb_ffi_dispatch ()
> >>>>> #48 0x00035ca0 in find_bs_boxed_by_encoding ()
> >>>>> #49 0x00221e09 in call_cfunc ()
> >>>>> #50 0x002214f2 in rb_call0 ()
> >>>>> #51 0x00222489 in rb_call ()
> >>>>> #52 0x0021c34a in rb_eval ()
> >>>>> #53 0x00217d9c in eval_node ()
> >>>>> #54 0x00218369 in ruby_exec_internal ()
> >>>>> #55 0x002183b3 in ruby_exec ()
> >>>>> #56 0x002183dd in ruby_run ()
> >>>>> #57 0x00033474 in RBApplicationMain ()
> >>>>> #58 0x00002886 in main ()
> >>>>>
> >>>>> So does somebody know of a good way of implementing this with
> >>>>> RubyCocoa?
> >>>>>
> >>>>> Cheers,
> >>>>> Eloy
> >>>>>
> >>>>> PS: I'm on svn rev 1983
> >>>>>
> >>>>> -------------------------------------------------------------------------
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> >>>>> _______________________________________________
> >>>>> Rubycocoa-talk mailing list
> >>>>> Rub...@li...
> >>>>> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk
> >>>>
> >>>>
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> >>>
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> >>
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