OK, so one further question: Is there any chance that if -close is called the
document won't actually be closed and stays open?
Regards
Markus
On 9/21/12 6:49 PM, Kevin Perry wrote:
Oh dear. Forget you heard me mention anything about unpublished API. The lack of an
"_" threw me off...
Yes, you'll probably want to keep your own flag.
-KP
On Sep 20, 2012, at 11:41 PM, Markus Spoettl <ms_li...@shiftoption.com> wrote:
Just to clarify: -isClosed is not something that is available on NSDocument or
NSWindowController, did you mean to say that I'll have to keep a flag myself?
Regards
Markus
On 9/20/12 6:53 PM, Kevin Perry wrote:
This is an known and unfortunate result of the current architecture of
NSWindow, NSWindowController, and NSDocument.
There isn't any documentation I'm aware of that explicitly states that -close
can be invoked re-entrantly, but it can be deduced from the existing
documentation:
On -[NSDocument close]:
"The default implementation of this method … sends each of the document's
window controllers a -close message"
On -[NSWindowController close]:
"If the controller belongs to a document and it is either the last
controller for the document or -shouldCloseDocument is YES, then this will also -close
the document."
The best way around this at the moment is to first verify [self isClosed] == NO
before calling super and doing your own work.
[kevin perry];
On Sep 19, 2012, at 1:06 PM, Markus Spoettl <ms_li...@shiftoption.com> wrote:
Why does AppKit call into NSDocument's -close multiple times by indirect
recursion? Can this be on purpose?
It happens when I have this:
1) A document with unsaved with changes
2) Terminate the app via CMD-Q
3) Answer "Don't Save" in the save-changes-sheet
This doesn't smell right. I override -close and call super right away, doing
some cleanup work afterwards. Under some bizarre situations which I have not
been able to recreate it gets called up to 4 times.
I'm pasting the call stack (line 366 is the call to super, line 375 is my
breakpoint).
Regards
Markus
#0 0x00000001000034d8 in -[MyDocument close] at
/Users/markus/Projects/MyApp/src/MyDocument.m:375
#1 0x00007fff8bed7d25 in -[NSWindowController _windowDidClose] ()
#2 0x00007fff8a30ddf0 in -[QLSeamlessDocumentCloser
closeWindow:contentFrame:withBlock:] ()
#3 0x00007fff8baa8602 in -[NSWindow _close] ()
#4 0x00007fff8bbe1c74 in -[NSDocument close] ()
#5 0x00000001000033c9 in -[MyDocument close] at
/Users/markus/Projects/MyApp/src/MyDocument.m:366
#6 0x00007fff8bbf342e in __-[NSDocumentController
closeAllDocumentsWithDelegate:didCloseAllSelector:contextInfo:]_block_invoke_3
()
#7 0x00007fff8bbf54c5 in -[NSDocumentController
_something:didSomething:soContinue:] ()
#8 0x00007fff8bbd62a8 in __-[NSDocument
canCloseDocumentWithDelegate:shouldCloseSelector:contextInfo:]_block_invoke_2 ()
#9 0x00007fff8bbd5ec1 in __-[NSDocument
canCloseDocumentWithDelegate:shouldCloseSelector:contextInfo:]_block_invoke_11
()
#10 0x00007fff8bbe8e08 in -[NSDocument
_something:wasPresentedWithResult:soContinue:] ()
#11 0x00007fff8bad8a4d in -[NSAlert didEndAlert:returnCode:contextInfo:] ()
#12 0x00007fff8bae53df in -[NSApplication endSheet:returnCode:] ()
#13 0x00007fff8bad8913 in -[NSAlert buttonPressed:] ()
#14 0x00007fff8053770d in -[NSObject performSelector:withObject:] ()
#15 0x00007fff8b934f7e in -[NSApplication sendAction:to:from:] ()
#16 0x00007fff8b934eb2 in -[NSControl sendAction:to:] ()
#17 0x00007fff8b934ddd in -[NSCell _sendActionFrom:] ()
#18 0x00007fff8b9342a0 in -[NSCell trackMouse:inRect:ofView:untilMouseUp:]
()
#19 0x00007fff8b9b3fc4 in -[NSButtonCell
trackMouse:inRect:ofView:untilMouseUp:] ()
#20 0x00007fff8b932eaa in -[NSControl mouseDown:] ()
#21 0x00007fff8b8fe348 in -[NSWindow sendEvent:] ()
#22 0x00007fff8b897a55 in -[NSApplication sendEvent:] ()
#23 0x00007fff8bae427e in -[NSApplication _shouldTerminate] ()
#24 0x00007fff8b838115 in -[NSApplication terminate:] ()
#25 0x000000010001a4a3 in -[AppDelegate terminate:] at
/Users/markus/Projects/rubiTrack/src/AppDelegate.m:219
#26 0x00007fff8053770d in -[NSObject performSelector:withObject:] ()
#27 0x00007fff8b934f7e in -[NSApplication sendAction:to:from:] ()
#28 0x00007fff8ba21bfb in -[NSMenuItem _corePerformAction] ()
#29 0x00007fff8ba21932 in -[NSCarbonMenuImpl
performActionWithHighlightingForItemAtIndex:] ()
#30 0x00007fff8b99f524 in -[NSMenu performKeyEquivalent:] ()
#31 0x00007fff8b99e175 in -[NSApplication _handleKeyEquivalent:] ()
#32 0x00007fff8b897536 in -[NSApplication sendEvent:] ()
#33 0x00007fff8b82e0c6 in -[NSApplication run] ()
#34 0x00007fff8baaa244 in NSApplicationMain ()
#35 0x000000010000b552 in main at /Users/markus/Projects/MyApp/src/main.m:22
#36 0x00000001000021c4 in start ()
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