That's good to know, thank you! 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 () -- __________________________________________ Markus Spoettl _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/kperry%40apple.com This email sent to kpe...@apple.com
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