ddu.vim をコマンド履歴のファジーファインダーとして使う設定

vim.fn["ddu#custom#patch_global"]({
  ui = 'ff',
  uiParams = {
    ff = {
      filterFloatingPosition = "top",
      floatingBorder = "rounded",
      floatingTitle = 'list',
      split = "floating",
      winHeight = '&lines * 6 / 10',
      winWidth = '&columns * 4 / 10',
      winRow = '&lines * 2 / 10',
      winCol = '&columns * 1 / 10',
      prompt = "> ",
    }
  },
  sourceOptions = {
    _ = {
      matchers = { 'matcher_substring' },
      ignoreCase = true,
    },
  },
  kindOptions = {
    _ = {
      defaultAction = "open"
    },
    action = {
      defaultAction = "do",
    },
  },
  actionOptions = {
    quit = false
  }
})

vim.fn["ddu#custom#patch_local"]("command_history", {
  uiParams = {
    ff = {
      previewFloating = false,
      winHeight = '&lines / 2',
      winWidth = '&columns / 3',
      winRow = '&lines / 4',
      winCol = '&columns / 6 * 2',
      displaySourceName = "no",
    }
  },
  sources = {
    {
      name = { "command_history" },
    },
  },
  sourceOptions = {
    command_history = {
      defaultAction = "execute",
    }
  },
  unique = true,
})


local ddu_vim_autocmd_group = vim.api.nvim_create_augroup('ddu_vim', {})
vim.api.nvim_create_autocmd("FileType",
  {
    pattern = "ddu-ff",
    callback = function()
      vim.keymap.set("n", "q", [[<Cmd>call ddu#ui#do_action("quit")<CR>]], { buffer = true })
      vim.keymap.set("n", "<CR>", [[<Cmd>call ddu#ui#do_action("itemAction")<CR>]], { buffer = true })
      vim.keymap.set("n", "a", [[<Cmd>call ddu#ui#do_action('chooseAction')<CR>]], { buffer = true })
      vim.keymap.set("n", "i", [[<Cmd>call ddu#ui#do_action("openFilterWindow")<CR>]], { buffer = true })
      if vim.fn["ddu#custom#get_current"]().name == "command_history" then
        vim.keymap.set("n", "e", [[<Cmd>call ddu#ui#do_action("itemAction", {'name': 'edit'})<CR>]], { buffer = true })
        vim.keymap.set("n", "dd", [[<Cmd>call ddu#ui#do_action("itemAction", {'name': 'delete'})<CR>]], { buffer = true })
      end
    end,
  }
)

vim.api.nvim_create_autocmd("User",
  {
    pattern = 'Ddu:ui:ff:openFilterWindow',
    callback = function()
      vim.keymap.set({ 'n', 'i', 'c' }, '<CR>', [[<Cmd>close<CR>]], { expr = true, buffer = true })
      vim.fn['ddc#enable_cmdline_completion']()
    end,
  }
)

vim.api.nvim_create_autocmd({ 'User' },
  {
    pattern = 'Ddu:ui:ff:closeFilterWindow',
    callback = function()
      vim.keymap.del('n', '<CR>', { buffer = true })
      vim.keymap.del('i', '<CR>', { buffer = true })
      vim.keymap.del('c', '<CR>', { buffer = true })
      -- アイテムリスト用のキーバインドを復活させる
      vim.keymap.set("n", "<CR>", [[<Cmd>call ddu#ui#do_action("itemAction")<CR>]], { buffer = true })
      local autocmd_id = Get_autocmd_id({ group = ddu_vim_autocmd_group, pattern = 'Ddu:uiDone' })
      if autocmd_id ~= 0 then
        vim.api.nvim_del_autocmd(autocmd_id)
      end
    end
  }
)

vim.keymap.set('n', '<leader>dc', function()
  vim.fn['ddu#start']({ name = 'command_history' })
end)

function Ddu_start_with_filter_window(source_name)
  vim.fn['ddu#start']({ name = source_name })
  return vim.api.nvim_create_autocmd("User",
    {
      pattern = 'Ddu:uiDone',
      group = ddu_vim_autocmd_group,
      nested = true,
      callback = function()
        local lineCount = vim.fn.line('$')
        if lineCount >= 10 then
          vim.fn['ddu#ui#async_action']('openFilterWindow')
        end
      end,
    }
  )
end