Re: [Cdk-jchempaint] delete bond behaviour

[Nick E. <nic...@gm...>]

Hello Ralf,

I would expect for the case of deleting the bond that you would get 2
CH4 molecules. Following on from this, I would expect deleting the
bond and C* to give a single CH4. Since users might accidentally add a
bond, deleting a bond should be the inverse operation of adding a
bond. For me behaving otherwise would be confusing.

Nick

On 28 September 2012 15:42, Ralf Stephan <ra...@ar...> wrote:
> Hello,
> I'm looking for feedback on a use case where I'm not sure
> what users would expect. As that case results at the moment
> in an exception I offer you the choice to decide how I'll fix it.
>
>                   H3C---CH3
>
> Assume you have ethane on the canvas. Now you click Select
> Rectangle and draw a selection rectangle around the first C,
> the bond middle not included, so your selection *is practically
> the first C. Deletion will leave CH4, and I hope you agree.
>
> Now draw the rectangle a bit wider such that the bond middle
> is included, selecting C *and bond. 1. What will remain when you
> delete both? CH4 or nothing? 2. Would you expect deleting the bond
> only to leave two methanes or nothing?
>
> Regards,
> Ralf Stephan
>
>
>
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