Expose TotalLineCount() and VisibleLineCount() methods within viewport

[adaam2]

As per discord discussion, exposes a TotalLineCount() and VisibleLineCount() methods in the viewport package.

[meowgorithm]

Thanks, @adaam2. Per the discussion:

Is there a particular reason why lines in viewport is not accessible outside of the package? I have found myself in a situation where it would be helpful to know how many lines there currently are in a viewport - hidden or visible:

Don't think there's a method currently that allows you see the total number of lines - scroll percent is the nearest thing

Just curious about your use case here: is there a particular reason you need the actual lines versus just the total number? Was assuming this PR would be something closer to something like this:

func (m Model) TotalLineCount() int

func (m Model) VisibleLineCount() int

[adaam2]

@meowgorithm yeah I'd be happy with just the totals - figured the actual content of the lines may have been more useful for others going forward (maintaining snapshots of content etc, but then again could just capture that in other ways just as easily)

I'll change the PR unless you have had a change of heart.

[meowgorithm]

@adaam2 Thank you! For now, let's just stick with the totals. Just a couple small requests, then we're good to go with this one.

[adaam2]

@meowgorithm updated 👍🏻

[meowgorithm]

Looks good. Thank you!