[Rubycocoa-talk] exception in rubycocoa

[Remo E. <re...@pl...>]

hi all

i have a exception when i implement the following datasource: (i know  
the source is not complete)

( the exeption throws when i expand a folder)

		def outlineView_numberOfChildrenOfItem(outlineView, item)
			if item.nil?
				if @scene.nil?
					return 0
				else
					return 1
				end
			else
				return item.children.count
			end
		end
		
		def outlineView_isItemExpandable(outlineView, item)
			outlineView_numberOfChildrenOfItem(outlineView, item) > 0
		end

		def outlineView_child_ofItem(outlineView, index, item)
			if item.nil?
				return @scene
			else
				return item.children.objectAtIndex(index)
			end
		end

		def outlineView_objectValueForTableColumn_byItem(outlineView, column,  
item)
			
			case column.identifier.to_s
				when 'name'
					'name'
				when 'values'
					"value"
			end
		end

is it a bug or i make the things wrong ?

regards,
Remo

------------ EXCEPTION  
------------------------------------------------------------------------ 
-------------------

Date/Time:      2005-04-26 00:11:45 +0200
OS Version:     10.3.9 (Build 7W98)
Report Version: 2

PID:     2231
Thread:  0

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_INVALID_ADDRESS (0x0001) at 0x10a321ac

Thread 0 Crashed:
0   libobjc.A.dylib          	0x90831204 objc_msgSend + 0x24
1   ???                      	0x00345fe8 ocid_get_rbobj + 0x6c
2   ???                      	0x0031b6c0 ocid_to_rbobj + 0x28
3   ???                      	0x0031ae7c ocdata_to_rbobj + 0x120
4   ???                      	0x0031d3b4  
override_mixin_class_method_list + 0x858
5   ???                      	0x0031d584  
override_mixin_class_method_list + 0xa28
6   ???                      	0x0031d918  
override_mixin_class_method_list + 0xdbc
7   ???                      	0x0031c84c rbobj_to_ocdata + 0x968
8   com.apple.Foundation     	0x90a2d960  
-[NSObject(NSForwardInvocation) forward::] + 0x198
9   libobjc.A.dylib          	0x90836810 _objc_msgForward + 0xb0
10  com.apple.AppKit         	0x92e9d82c -[NSTableView  
drawRow:clipRect:] + 0x13c
11  com.apple.AppKit         	0x92f1986c -[NSOutlineView  
drawRow:clipRect:] + 0xec
12  com.apple.AppKit         	0x92ecf234 -[NSTableView drawRect:] +  
0x378
13  com.apple.AppKit         	0x92e775a4 -[NSView _drawRect:clip:] +  
0x770
14  com.apple.AppKit         	0x92e87fe8 -[NSView  
_recursiveDisplayAllDirtyWithLockFocus:visRect:] + 0xe8
15  com.apple.AppKit         	0x92ebdd60 _recursiveDisplayInRect2 + 0x54
16  com.apple.CoreFoundation 	0x901cf16c CFArrayApplyFunction + 0x198
17  com.apple.AppKit         	0x92e880ec -[NSView  
_recursiveDisplayAllDirtyWithLockFocus:visRect:] + 0x1ec
18  com.apple.AppKit         	0x92e738f4 -[NSView  
_recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect: 
rectIsVisibleRectForView:topView:] + 0x9c
19  com.apple.AppKit         	0x92e73d10 -[NSView  
_recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect: 
rectIsVisibleRectForView:topView:] + 0x4b8
20  com.apple.AppKit         	0x92e73d10 -[NSView  
_recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect: 
rectIsVisibleRectForView:topView:] + 0x4b8
21  com.apple.AppKit         	0x92e73d10 -[NSView  
_recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect: 
rectIsVisibleRectForView:topView:] + 0x4b8
22  com.apple.AppKit         	0x92e73d10 -[NSView  
_recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect: 
rectIsVisibleRectForView:topView:] + 0x4b8
23  com.apple.AppKit         	0x92e73d10 -[NSView  
_recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect: 
rectIsVisibleRectForView:topView:] + 0x4b8
24  com.apple.AppKit         	0x92ec0880 -[NSFrameView  
_recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect: 
rectIsVisibleRectForView:topView:] + 0x124
25  com.apple.AppKit         	0x92ea7a04 -[NSThemeFrame  
_recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect: 
rectIsVisibleRectForView:topView:] + 0xc0
26  com.apple.AppKit         	0x92e84bbc -[NSView  
_displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:] +  
0x180
27  com.apple.AppKit         	0x92e9dbec -[NSView displayIfNeeded] +  
0xa8
28  com.apple.AppKit         	0x92eae8dc -[NSWindow displayIfNeeded] +  
0xb4
29  com.apple.AppKit         	0x92e8ef24 _handleWindowNeedsDisplay +  
0xe0
30  com.apple.CoreFoundation 	0x901c1c80 __CFRunLoopDoObservers + 0x194
31  com.apple.CoreFoundation 	0x901c151c __CFRunLoopRun + 0x18c
32  com.apple.CoreFoundation 	0x901c5e6c CFRunLoopRunSpecific + 0x148
33  com.apple.HIToolbox      	0x92885f60 RunCurrentEventLoopInMode +  
0xac
34  com.apple.HIToolbox      	0x9288c640 ReceiveNextEventCommon + 0xf4
35  com.apple.HIToolbox      	0x928ae6a0  
BlockUntilNextEventMatchingListInMode + 0x60
36  com.apple.AppKit         	0x92e827bc _DPSNextEvent + 0x180
37  com.apple.AppKit         	0x92e99240 -[NSApplication  
nextEventMatchingMask:untilDate:inMode:dequeue:] + 0x74
38  com.apple.AppKit         	0x92ead5c0 -[NSApplication run] + 0x21c
39  com.apple.AppKit         	0x92f69cc4 NSApplicationMain + 0x1d0
40  ???                      	0x003222fc init_NSAlert + 0x4a4
41  ???                      	0x00371430 rb_throw + 0x260
42  ???                      	0x00363ea0 rb_with_disable_interrupt +  
0x79c
43  ???                      	0x00364800 rb_with_disable_interrupt +  
0x10fc
44  ???                      	0x0035ee58 rb_Array + 0x1e84
45  ???                      	0x0035a404 ruby_init + 0x38c
46  ???                      	0x0035aa28 ruby_cleanup + 0x250
47  ???                      	0x0035aa84 ruby_exec + 0x18
48  ???                      	0x0035aacc ruby_run + 0x38
49  ???                      	0x0031de98 RBRubyCocoaInit + 0
50  ???                      	0x00001dfc main + 0x30 (main.m:13)
51  ???                      	0x000018bc _start + 0x188 (crt.c:267)
52  dyld                     	0x8fe1a278 _dyld_start + 0x64