Shrink the UI when there are few options and/or preview is not available

[proxima1998]

See the image.

I only have 3 options available and there are no previews, still, the picker is covering almost the entire screen. I know that fzf-lua is extremely customizable but I'm can't find a way to make the UI smaller (similar to telescope during code actions) when there are few options and no preview available.

I don't want to shrink the UI for every case, just the one mentioned above.

This is my fzf-lua config :-

local SETTINGS = require("settings")

local fuzzy = SETTINGS.core.fuzzy

if type(fuzzy) ~= "boolean" then
	local err = ErrStr("DataTypeError", "SETTINGS.core.fuzzy", {
		["fuzzy"] = { ["boolean"] = type(fuzzy) }
	})

	error(err)
end

--Default fuzzy picker
local fzf = {
	"https://github.com/ibhagwan/fzf-lua",
	cond = fuzzy,
	dependencies = {
		"https://github.com/junegunn/fzf",
		"https://github.com/nvim-tree/nvim-web-devicons",
		"https://github.com/echasnovski/mini.icons",
		"https://github.com/sharkdp/fd",
		"https://github.com/BurntSushi/ripgrep",
	},
	-- SOURCE : https://github.com/ibhagwan/fzf-lua?tab=readme-ov-file#customization
	-- SOURCE : https://github.com/ibhagwan/fzf-lua/blob/main/OPTIONS.md
	-- SOURCE : https://github.com/ibhagwan/fzf-lua/tree/main/lua/fzf-lua/profiles
	opts = {
		"default",
		winopts = {
			border = "rounded", ---@type "none" | "single" | "rounded"
			preview = {
				border = "rounded", ---@type "none" | "single" | "rounded"
			},
		},
		files = {
			git_icons = true, ---@type boolean
			file_icons = true, ---@type boolean
			color_icons = true, ---@type boolean
			--Enable hidden files by default
			hidden = true, ---@type boolean
		},
	},
	config = function(_, opts)
		--Hide `.plugins` directory from Fzf
		opts.files.hidden = not SETTINGS.SP.CONFIG_PATH == vim.loop.cwd
		
		require("fzf-lua").setup(opts)
		require("fzf-lua").register_ui_select()
	end,
}

return fzf

[nenahp]

I custom my own, it's not hard:

require('fzf-lua').setup { 'hide' }

vim.ui.select = function(ui_items, ui_opts, ui_on_choice)
  ui_on_choice = ui_on_choice or function() end
  ui_opts = ui_opts or {}
  local opts = ui_opts.fzf_lua_opts or {}
  local contents
  local title = ('[%s]'):format(ui_opts.prompt or 'Select')
  local default = {
    winopts = function()
      return {
        relative = 'cursor',
        title = title,
        row = 0.5,
        height = not opts.preview and math.min(math.max(#ui_items + 1, 2), 20) or nil,
      }
    end,
    query = ui_opts.default,
    actions = {
      ['enter'] = {
        fn = function(sel)
          local n = #sel
          if n == 0 then
            ui_on_choice(nil, nil)
            return
          end
          local idx = vim.iter(sel):map(function(v) return v + 1 end):totable()
          local item = vim.iter(idx):map(function(v) return ui_items[v] end):totable()
          if n <= 1 then
            item, idx = item[1], idx[1]
          end
          ui_on_choice(item, idx)
        end,
        field_index = '{+n}', -- field_index only work in "hide" profile (or we use exec_silent = true)
        exec_silent = ui_opts.no_close,
      },
    },
  }
  contents = vim.is_callable(ui_opts.format_item)
      and vim.iter(ui_items):map(ui_opts.format_item):totable()
    or ui_items

  require('fzf-lua').set_info { mod = 'ui', cmd = 'select', fnc = 'ui.select' }
  require('fzf-lua.core').fzf_exec(contents, vim.tbl_deep_extend('force', default, opts))
end

[nenahp]

opts.prompt=prompt_prefix
opts.marker=current_entry_marker
opts.winopts.backdrop=0 (no dim background)
opts.hls.border=hlgroup

[proxima1998]

I'll try it when I'll get home. And I will update you 👍 .

[nenahp]

oop my impl has bug, since you use rounded border, at least + 2 height
height = not opts.preview and math.min(math.max(#ui_items + 1 + 2, 2 + 2), 20) or nil

[nenahp]

about how it work, it preset the height with the given entry number before pipe to fzf

i didnt add 1. 2. 3.... to each entry that's also a different..

you can learn how field index work in fzf --man

[proxima1998]

Thank you so much 😃 .