neovim-config/lua/ui/tabline.lua
siduck d4c71e1472 fix hidden buffer tabs not showing in tabufline with less space
credits to @ii14 for helping me fix this issue
2022-06-29 10:17:28 +05:30

169 lines
6.1 KiB
Lua

local api = vim.api
local devicons_present, devicons = pcall(require, "nvim-web-devicons")
local fn = vim.fn
local new_cmd = api.nvim_create_user_command
require("base46").load_highlight "tbline"
---------------------------------------------------------- btn onclick functions ----------------------------------------------
vim.cmd "function! TbGoToBuf(bufnr,b,c,d) \n execute 'b'..a:bufnr \n endfunction"
vim.cmd [[
function! TbKillBuf(bufnr,b,c,d)
call luaeval('require("core.utils").close_buffer(_A)', a:bufnr)
endfunction]]
vim.cmd "function! TbNewTab(a,b,c,d) \n tabnew \n endfunction"
vim.cmd "function! TbGotoTab(tabnr,b,c,d) \n execute a:tabnr ..'tabnext' \n endfunction"
vim.cmd "function! TbTabClose(a,b,c,d) \n lua require('core.utils').closeAllBufs('closeTab') \n endfunction"
vim.cmd "function! TbCloseAllBufs(a,b,c,d) \n lua require('core.utils').closeAllBufs() \n endfunction"
vim.cmd "function! TbToggle_theme(a,b,c,d) \n lua require('base46').toggle_theme() \n endfunction"
vim.cmd "function! TbToggleTabs(a,b,c,d) \n let g:TbTabsToggled = !g:TbTabsToggled | redrawtabline \n endfunction"
---------------------------------------------------------- commands ------------------------------------------------------------
new_cmd("Tbufnext", function()
require("core.utils").tabuflineNext()
end, {})
new_cmd("Tbufprev", function()
require("core.utils").tabuflinePrev()
end, {})
new_cmd("Tbufclose", function()
require("core.utils").close_buffer()
end, {})
-------------------------------------------------------- functions ------------------------------------------------------------
local function new_hl(group1, group2)
local fg = fn.synIDattr(fn.synIDtrans(fn.hlID(group1)), "fg#")
local bg = fn.synIDattr(fn.synIDtrans(fn.hlID(group2)), "bg#")
api.nvim_set_hl(0, "Tbline" .. group1 .. group2, { fg = fg, bg = bg })
return "%#" .. "Tbline" .. group1 .. group2 .. "#"
end
local function getNvimTreeWidth()
for _, win in pairs(api.nvim_tabpage_list_wins(0)) do
if vim.bo[api.nvim_win_get_buf(win)].ft == "NvimTree" then
return api.nvim_win_get_width(win) + 1
end
end
return 0
end
local function getBtnsWidth()
local width = 6
if fn.tabpagenr "$" ~= 1 then
width = width + ((3 * fn.tabpagenr "$") + 2) + 10
width = not vim.g.TbTabsToggled and 8 or width
end
return width
end
local function add_fileInfo(name, bufnr)
if devicons_present then
local icon, icon_hl = devicons.get_icon(name, string.match(name, "%a+$"))
if not icon then
icon, icon_hl = devicons.get_icon "default_icon"
end
local fileInfo = " " .. icon .. " " .. name .. " " -- initial value
local pad = (24 - #fileInfo) / 2
icon = (
api.nvim_get_current_buf() == bufnr and new_hl(icon_hl, "TbLineBufOn") .. " " .. icon
or new_hl(icon_hl, "TbLineBufOff") .. " " .. icon
)
name = (#name > 15 and string.sub(name, 1, 13) .. "..") or name
name = (api.nvim_get_current_buf() == bufnr and "%#TbLineBufOn# " .. name .. " ")
or ("%#TbLineBufOff# " .. name .. " ")
return string.rep(" ", pad) .. icon .. name .. string.rep(" ", pad - 1)
end
end
local function styleBufferTab(nr)
local close_btn = "%" .. nr .. "@TbKillBuf@ %X"
local name = (#api.nvim_buf_get_name(nr) ~= 0) and fn.fnamemodify(api.nvim_buf_get_name(nr), ":t") or " No Name "
name = "%" .. nr .. "@TbGoToBuf@" .. add_fileInfo(name, nr) .. "%X"
-- color close btn for focused / hidden buffers
if nr == api.nvim_get_current_buf() then
close_btn = (vim.bo[0].modified and "%" .. nr .. "@TbKillBuf@%#TbLineBufOnModified# ")
or ("%#TbLineBufOnClose#" .. close_btn)
name = "%#TbLineBufOn#" .. name .. close_btn
else
close_btn = (vim.bo[nr].modified and "%" .. nr .. "@TbKillBuf@%#TbBufLineBufOffModified# ")
or ("%#TbLineBufOffClose#" .. close_btn)
name = "%#TbLineBufOff#" .. name .. close_btn
end
return name
end
---------------------------------------------------------- components ------------------------------------------------------------
local M = {}
M.CoverNvimTree = function()
return "%#NvimTreeNormal#" .. string.rep(" ", getNvimTreeWidth())
end
M.bufferlist = function()
local buffers = {} -- buffersults
local available_space = vim.o.columns - getNvimTreeWidth() - getBtnsWidth()
local current_buf = api.nvim_get_current_buf()
local has_current = false -- have we seen current buffer yet?
for _, bufnr in ipairs(vim.t.bufs) do
if api.nvim_buf_is_valid(bufnr) then
if ((#buffers + 1) * 21) > available_space then
if has_current then
break
end
table.remove(buffers, 1)
end
has_current = (bufnr == current_buf and true) or has_current
table.insert(buffers, styleBufferTab(bufnr))
end
end
return table.concat(buffers) .. "%#TblineFill#" .. "%=" -- buffers + empty space
end
vim.g.TbTabsToggled = 0
M.tablist = function()
local result, number_of_tabs = "", fn.tabpagenr "$"
if number_of_tabs > 1 then
for i = 1, number_of_tabs, 1 do
local tab_hl = ((i == fn.tabpagenr()) and "%#TbLineTabOn# ") or "%#TbLineTabOff# "
result = result .. ("%" .. i .. "@TbGotoTab@" .. tab_hl .. i .. " ")
result = (i == fn.tabpagenr() and result .. "%#TbLineTabCloseBtn#" .. "%@TbTabClose@ %X") or result
end
local new_tabtn = "%#TblineTabNewBtn#" .. "%@TbNewTab@  %X"
local tabstoggleBtn = "%@TbToggleTabs@ %#TBTabTitle# TABS %X"
return vim.g.TbTabsToggled == 1 and tabstoggleBtn:gsub("()", { [36] = "" })
or new_tabtn .. tabstoggleBtn .. result
end
end
M.buttons = function()
local toggle_themeBtn = "%@TbToggle_theme@%#TbLineThemeToggleBtn#" .. vim.g.toggle_theme_icon .. "%X"
local CloseAllBufsBtn = "%@TbCloseAllBufs@%#TbLineCloseAllBufsBtn#" .. "" .. "%X"
return toggle_themeBtn .. CloseAllBufsBtn
end
M.run = function()
return M.CoverNvimTree() .. M.bufferlist() .. (M.tablist() or "") .. M.buttons()
end
M = vim.tbl_deep_extend("force", M, require("core.utils").load_config().ui.tabufline.override)
return M