Get number of items in on_create

[savchenko]

Is it possible to get the number of items (ideally - with name) in the winopts = { on_create = { function() ... ?

I know it's possible in actions = { result = { fn = function(s) tonumber(unpack(s)) ...

[ibhagwan]

Is it possible to get the number of items (ideally - with name) in the winopts = { on_create = { function() ... ?

I know it's possible in actions = { result = { fn = function(s) tonumber(unpack(s)) ...

Not possible, on_create happens on creating the neovim window/split before the fzf process even starts.

[nenahp]

Maybe you want to avoid flick in #1969?

We can pass hide = true in nvim_open_win and toggle it by nvim_win_set_config to defer it show up on "result" event.

EDIT:
current winopts.hide = true is ignored. maybe we can pass user option to it.

[savchenko]

Trying to avoid flicker when opening less-than-maximised windows. So far, width/height set to 0.1 and then resize via :redraw() is the best I've got.

[nenahp]

#1980.

local e = {
  fn = function(s)
    local fzf_match_cnt = tonumber(unpack(s))
    local w = require('fzf-lua.utils').fzf_winobj()
    w._o.winopts.height = math.max(10, math.min(20, fzf_match_cnt + 3))
    w._o.winopts.hide = false
    w:redraw()
  end,
  exec_silent = true,
  field_index = '$FZF_MATCH_COUNT',
}
require('fzf-lua').tabs({
  winopts = { hide = true },
  actions = { result = e, change = e },
})

[savchenko]

That's more flicker, not less :) The window is still being shown at the beginning, even with hide = true in the winopts.

Here is my current take on it:

_G.rendered = false
oldfiles = {
    winopts = {
        width = 0.5,
        height = 0.1,
        on_close = function()
            _G.rendered = false
        end,
    },
    actions = {
        result = {
            fn = function(idx)
                if not _G.rendered then
                    local fzf_match_cnt = tonumber(unpack(idx))
                    local w = require('fzf-lua.utils').fzf_winobj()
                    w._o.winopts.width = 0.5
                    w._o.winopts.height = math.min(50, fzf_match_cnt + 3)
                    w:redraw()
                    _G.rendered = true
                end
            end,
            exec_silent = true,
            field_index = '$FZF_MATCH_COUNT',
        },
    },
},

_G.rendered is to prevent window resize on every keypress once the results are populated.