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Questions tagged [nsapplication-delegate]

33 questions
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How to be notified when a non-visible Mac OSX app is closing down? -- applicationWillTerminate() not called

I have a Mac app whose applicationWillTerminate:(NSNotification *) handler is not called when the app closes down. There is some c++ memory cleanup code that must be called if the program is shut down, so I need some way to do this. The reason it…
Alyoshak
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How to initialize a NSDocument after calling LSLaunchFSRefSpec?

I am working on a document-based application. If I execute this app from the Finder it runs like expected: First the NSApplicationDelegate applicationDidFinishLaunching method is executed. Then the NSPersistentDocument initialization is done. After…
user2581362
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Order of NSApplication delegate calls

I'm noticing something strange in my NSApplication delegate callbacks. When I start the app with debugger attached, I see what I expect: applicationDidFinishLaunching: is called first, then applicationDidBecomeActive: When I run the app without the…
Z S
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3 answers

Why not enforce strict singleton application delegate object to use in NIBs?

I just ran myself round in circles, all coming down to having instantiated an app delegate object in a secondary NIB that wasn't the NSMainNibFile. Amazing how having two app delegates kicking around means you have separate…
stevesliva
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4 answers

Best place to clean-up App global resources?

STOP PRESS OK before you see the word retainCount in the following question, please skip to the EDIT at the bottom where I have stated that I have stopped using it. My Cocoa App, which uses MRR, creates many global resources, which I am loading in…
trojanfoe
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How to handle Cocoa application termination properly?

So, here's my case : I'm developing a NON-standard document-based application and I want to handle the scenario of aborting the termination when there still are unsaved changes in any of the documents. My initial idea is : User tries to quit the…
Dr.Kameleon
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Mac Widgets: NSApplication openURLs not called from widget

I am working on a widget for my existing Mac app. The problem I am running into is that when I add a Link from the widget to the main app, the method - (void) application: (NSApplication *)application openURLs:(NSArray *)urls isn't called…
Z S
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At launch, prevent a document-based app to reopen an unsaved-unedited-empty document that was opened when quit

In a simple rtf editor —based on NSDocument subclass—, when app starts, it creates an untitled file. This a desirable behaviour. But if I quit the app with this opened, unedited and unsaved document (empty!), the application will restore this…
Denis
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How to implement NSApplicationDelegate protocol in glfw application

I am currently programming an application using glfw in MacOS X. My only problem is that the application doesn't use an AppDelegate, but does all the initialization in the main.cpp file like a command line utility. I specifically want to implement…
Andres Bucci
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How to prevent logout from app running as agent

The sample menu bar app is a agent as its LSUIElement is TRUE. I want to prevent logout on certain conditions. I tried with - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender. But I never receive this message when…
sac
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NSApplication applicationShouldTerminate called before applicationDidFinishLaunching

I've got a strange problem: got a singleton which is initialized in applicationDidFinishLaunching of AppDelegate, but in some cases I receive crash reports with EXC_CRASH (SIGSEGV) and a stack trace like this: 0 com.name.myapp …
silvansky
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Correct way to handle applicationShouldTerminate when red close button is clicked in my macOS GUI app

I have a SwiftUI app that allows only a single window. When the user tries to close the app, I want to check for some condition, show a warning and ask the user if they still want to close, and if not, then prevent it. Here's what I have so…
c00000fd
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How to toggle menu bar popover from a method outside of AppDelegate in Swift?

I am new to Swift UI and currently working on a menu bar app for MacOS. I created a AppDelegate in which there is a method which toggles the menu bar popover when the icon in the menu bar is clicked - This is all working perfectly. Now I want to use…
dev1999
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Make one last change to NSDocument before app terminates/window closes?

I have a basic NSDocument-based app. I need to make one last change to the document when: The user closes the document's window The user terminates the app Why? The document window contains an NSTextField. Usually text entered into this text field…
Mark
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Get name of file that launched an app in ViewController class?

I implemented the NSApplicationDelegate method func application(_ sender: NSApplication, openFile filename: String) -> Bool to get the name of the file that is double-clicked to launch my macOS app (Swift 4.x). However, it appears that this method…
Kenny
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