Re: Was: Re: NSStepper - useless?
Re: Was: Re: NSStepper - useless?
- Subject: Re: Was: Re: NSStepper - useless?
- From: William Squires <email@hidden>
- Date: Sun, 26 Feb 2012 18:44:34 -0600
On Feb 23, 2012, at 2:13 PM, Seth Willits wrote:
> On Feb 23, 2012, at 6:16 AM, William Squires wrote:
>
>> From what I've read, the NSStepper has a bug (though practically, you'll never see it); if one were to click the up or down arrow on the control 2^32 times (assuming it's value is a 4-byte signed int,and is initialized to 0), it would wrap around (or raise an exception for integer overflow). Probably not what the user had in mind!
>
> It's pretty irrelevant, because you wouldn't be using a stepper control for values in the billions. That'd be a poor UI. Just like if a table view had a couple billion rows in it in (in 32-bit) it would have broken as well. But it's a terrible thing to do in the first place. ;)
>
>
>> Why didn't they just make the NSStepper a custom view that draws two arrows, and has two sent actions that you can connect? Or even a variation of NSMatrix with two button cells that look like arrows. That would avoid the problem entirely, and be more intuitive to use.
>
> Not really. The control's intended use is to increment and decrement a value. That's what it does. If you're not using the stepper for manipulating a numeric value, you should probably be using a different control.
>
I'm just saying the stepper itself should not have a value, it should send actions to a controller so it can manipulate a numeric value in a model object, or it should be able (using bindings) to increment/decrement a model's value. Using the UI as a model isn't what MVC is all about.
>
> --
> Seth Willits
>
>
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