CODEWITHSUNDEEP
objective-cmacoscocoawindow
raphael_mav
raphael_mav

Reputation: 580

ReOpen Window just if there is no other window open. Mac, cocoa

Hello I am working on a program which uses 2 windows. With the main window you are able to open the second window.

If i click on the runnable file while the program is running the first window opens over the second window. Thats no wanted. How could i exclusively open the first window if the second is not opened or minimised, otherwise i would prefer to activate the second window without reopening the first.

I hope you could help me because i can't find anything useful in the internet. I am new to OSX programming but I am not that bad in other languages.

Upvotes: 2

Views: 321

Answers (1)

stevesliva
stevesliva

Reputation: 5665

You need to implement the NSApplicationDelegate method applicationShouldHandleReopen:hasVisibleWindows:

I've only used this when the app has closed all it's windows and needs to reopen one, but I believe this would work for you:

- (BOOL) applicationShouldHandleReopen:(NSApplication *)sender hasVisibleWindows:(BOOL)flag
{
    return !flag;
}

That tells the NSApp to reopen the default way (YES) if there are no visible windows, and to "do nothing" (NO) if there are visible windows.

What seems odd, though, is that this should be the default behavior, unless your second window is an NSPanel. So perhaps that is the root of your problem? Let me know if this works... happy to update with feedback.

Upvotes: 1

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