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Re: validateUserInterfaceItem problem
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Re: validateUserInterfaceItem problem


  • Subject: Re: validateUserInterfaceItem problem
  • From: Keary Suska <email@hidden>
  • Date: Thu, 29 Aug 2013 07:42:46 -0600

On Aug 29, 2013, at 6:38 AM, Pax wrote:

> I've written some code to enable / disable the menu items of my NSDocument based application, as appropriate.  It works for methods that I've written myself, but not (apparently) for ones that are provided for me.
>
> Here's the code (simplified slightly just to say return 'NO' - a quick test to see if what I'm doing works):
>
> - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem
> {
>    SEL theAction = [anItem action];
>
>    if (theAction == @selector(toggleFormat:))
>    {
>        return NO;
>    }
>    if (theAction == @selector(toggleToolbarShown:))
>    {
>        return NO;
>    }
>    if (theAction == @selector(runToolbarCustomizationPalette:))
>    {
>        return NO;
>    }
>    if (theAction == @selector(previewData:))
>    {
>        return NO;
>    }
>
>    return [super validateUserInterfaceItem:anItem];
> }
>
> The question is - what am I doing wrong?  Why don't toggleToolbarShown or runToolbarCustomizationPalette get validated?  How would you suggest that I fix this?

These two methods are implemented by NSWindow, and chances are the window is gobbling up the actions because it is earlier in the responder chain: https://developer.apple.com/library/mac/documentation/cocoa/Conceptual/EventOverview/EventArchitecture/EventArchitecture.html#//apple_ref/doc/uid/10000060i-CH3-SW9

Keary Suska
Esoteritech, Inc.
"Demystifying technology for your home or business"


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