feat: bufferline.nvim

nix/neovim-overlay.nix

@@ -32,6 +32,10 @@ with final.pkgs.lib; let
     # Base
     lz-n
     snacks-nvim
+
+    # UI
+    mini-icons
+    bufferline-nvim
   ];
 
   extraPackages = with pkgs; [

nvim/init.lua

@@ -11,4 +11,4 @@ require('autocmds')
 
 require('snacks-nvim')
 
--- require('lz.n').load('plugins')
+require('lz.n').load('plugins')

nvim/lua/icons.lua

@@ -0,0 +1,8 @@
+return {
+  diagnostics = {
+    Error = ' ',
+    Warn = ' ',
+    Hint = ' ',
+    Info = ' ',
+  },
+}

nvim/lua/lib/marleyvim/init.lua

@@ -0,0 +1,11 @@
+local M = {}
+
+---@param prefix string The string to prefix to all req calls.
+function M.localRequire(prefix)
+  ---@param mod string The module to require.
+  return function(mod)
+    return require(prefix .. '.' .. mod)
+  end
+end
+
+return M

nvim/lua/plugins/ui/bufferline-nvim.lua

@@ -0,0 +1,79 @@
+return {
+  'bufferline.nvim',
+  event = 'DeferredUIEnter',
+  keys = {
+    { '<LEADER>bp', '<CMD>BufferLineTogglePin<CR>', desc = 'Toggle pin' },
+    {
+      '<LEADER>bP',
+      '<CMD>BufferLineGroupClose ungrouped<CR>',
+      desc = 'Delete non-pinned buffers',
+    },
+    {
+      '<LEADER>br',
+      '<CMD>BufferLineCloseRight<CR>',
+      desc = 'Delete buffers to the right',
+    },
+    {
+      '<LEADER>bl',
+      '<CMD>BufferLineCloseLeft<CR>',
+      desc = 'Delete buffers to the left',
+    },
+    { '<S-H>', '<CMD>BufferLineCyclePrev<CR>', desc = 'Previous buffer' },
+    { '<S-L>', '<CMD>BufferLineCycleNext<CR>', desc = 'Next buffer' },
+    { '[b', '<CMD>BufferLineCyclePrev<CR>', desc = 'Previous buffer' },
+    { ']b', '<CMD>BufferLineCycleNext<CR>', desc = 'Next buffer' },
+    { '[B', '<CMD>BufferLineMovePrev<CR>', desc = 'Move buffer left' },
+    { ']B', '<CMD>BufferLineMoveNext<CR>', desc = 'Move buffer right' },
+  },
+  before = function()
+    require('lz.n').trigger_load('mini.icons')
+  end,
+  after = function()
+    require('bufferline').setup({
+      options = {
+        always_show_bufferline = true,
+
+        close_command = function(n)
+          Snacks.bufdelete(n)
+        end,
+        right_mouse_command = function(n)
+          Snacks.bufdelete(n)
+        end,
+
+        diagnostics = 'nvim_lsp',
+        diagnostics_indicator = function(_, _, diag)
+          local icons = require('icons').diagnostics
+          local ret = (diag.error and icons.Error .. diag.error .. ' ' or '')
+            .. (diag.warning and icons.Warn .. diag.warning or '')
+
+          return vim.trim(ret)
+        end,
+
+        offsets = {
+          {
+            filetype = 'neo-tree',
+            text = 'Explorer',
+            highlight = 'Directory',
+            text_align = 'center',
+          },
+        },
+
+        get_element_icon = function(elem)
+          local icon, hl, _ =
+            require('mini.icons').get('filetype', elem.filetype)
+
+          return icon, hl
+        end,
+      },
+    })
+
+    vim.api.nvim_create_autocmd({ 'BufAdd', 'BufDelete' }, {
+      desc = 'Fix bufferline when restoring a session',
+      callback = function()
+        vim.schedule(function()
+          pcall(nvim_bufferline)
+        end)
+      end,
+    })
+  end,
+}

nvim/lua/plugins/ui/init.lua

@@ -0,0 +1,6 @@
+local req = require('lib.marleyvim').localRequire('plugins.ui')
+
+return {
+  req('bufferline-nvim'),
+  req('mini-icons'),
+}

nvim/lua/plugins/ui/mini-icons.lua

@@ -0,0 +1,20 @@
+return {
+  'mini.icons',
+  after = function()
+    require('mini.icons').setup({
+      file = {
+        ['.keep'] = { glyph = '󰊢', hl = 'MiniIconsGrey' },
+        ['devcontainer.json'] = { glyph = '', hl = 'MiniIconsAzure' },
+      },
+      filetype = {
+        dotenv = { glyph = '󰌋', hl = 'MiniIconsYellow' },
+      },
+    })
+
+    package.preload['nvim-web-devicons'] = function()
+      require('mini.icons').mock_nvim_web_devicons()
+
+      return package.loaded['nvim-web-devicons']
+    end
+  end,
+}