Re: Does trigger any event?

On 2015-05-26 04:59:00 +0000, Nikolay Pavlov said:

> Default value from &l:statusline is &g:statusline (actually,
> pseudo-value "no value set, fall back to &g:statusline"). If you set
> &g:statusline to `%!BuildNewStatusLine()` and run
> `RefreshStatusLines()` inside then this function will be run only when
> new window appears because `RefreshStatusLines()` will set
> &l:statusline which will be used then and which will only call
> BuildStatusLine, but not BuildNewStatusLine.

Ok, I'm having some difficulty with this. Currently I have something
like this in my .vimrc:

func! WinNrFromID(window_id)
return filter(range(1, winnr('$')), 'getwinvar(v:val,
"custom_window_id") == ' . a:window_id)[0]
endf

func! BuildStatusLine(window_id)
let nr = WinNrFromID(window_id)
" Build the status line
endf

let g:window_id = 0 " Global unique id

func! SetupLocalStatusLine()
let g:window_id +=1
let w:custom_window_id = g:window_id
exec 'setlocal statusline=%!BuildStatusLine(' . w:custom_window_id . ')'
endf

set statusline=%!SetupLocalStatusLine()

Problems:

1) How do I detect whether a window is the active one (I want different
status lines
for active and inactive windows)? I cannot use winnr() inside BuildStatusLine()
or in the context of %!.

2) When I open several windows and then I close them with <c-w>o, I get
an out of bounds
error in WinNrFromID(). Why? Is the function being called for
closing/closed windows?

Nicola


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