[mini.files]: Enable Window Picker for Splits

[willdavidow]

Contributing guidelines

• I have read CODE_OF_CONDUCT.md

Module(s)

mini.files

Question

I'm wondering if there's a way to configure opening files in a specific split window. I had the plugin https://github.com/s1n7ax/nvim-window-picker enabled when I was using nvim-tree and I was hoping to use that plugin and have mini.files do something similar.

It doesn't seem like there's a way to map functions to the internal keys of mini.files but I didn't try for very long since I received the error that the plugin expects a string and not a function for keybinds, so I stopped there.

Basically: move cursor to the file, press l or L and then the window picker opens to prompt which window the file should open in, and then opens there once the window is selected.

[echasnovski]

Sure, this is possible via making custom buffer-local mappings (similar to this code, for example). Something like this should work:

require('mini.files').setup({ mappings = { go_in = '', go_in_plug = '' } })
local pick_win_and_go_in = function(close_on_file)
  if MiniFiles.get_fs_entry().fs_type == 'file' then
    local picked_win_id = require('window-picker').pick_window()
    MiniFiles.set_target_window(picked_win_id)
  end
  MiniFiles.go_in({ close_on_file = close_on_file })
end

vim.api.nvim_create_autocmd('User', {
  pattern = 'MiniFilesBufferCreate',
  callback = function(args)
    local buf_id = args.data.buf_id
    vim.keymap.set('n', 'l', function() pick_win_and_go_in(false) end, { buffer = buf_id })
    vim.keymap.set('n', 'L', function() pick_win_and_go_in(true) end, { buffer = buf_id })
  end,
})