107 lines
3.3 KiB
Lua
107 lines
3.3 KiB
Lua
local highlight = require('lualine.highlight')
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local Tab = require('lualine.utils.class'):extend()
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---intialize a new tab from opts
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---@param opts table
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function Tab:init(opts)
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assert(opts.tabnr, 'Cannot create Tab without tabnr')
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self.tabnr = opts.tabnr
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self.options = opts.options
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self.highlights = opts.highlights
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end
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---returns name for tab. tabs name is the name of buffer in last active window
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--- of the tab.
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---@return string
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function Tab:label()
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local buflist = vim.fn.tabpagebuflist(self.tabnr)
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local winnr = vim.fn.tabpagewinnr(self.tabnr)
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local bufnr = buflist[winnr]
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local file = vim.api.nvim_buf_get_name(bufnr)
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local buftype = vim.fn.getbufvar(bufnr, '&buftype')
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if buftype == 'help' then
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return 'help:' .. vim.fn.fnamemodify(file, ':t:r')
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elseif buftype == 'terminal' then
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local match = string.match(vim.split(file, ' ')[1], 'term:.*:(%a+)')
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return match ~= nil and match or vim.fn.fnamemodify(vim.env.SHELL, ':t')
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elseif vim.fn.isdirectory(file) == 1 then
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return vim.fn.fnamemodify(file, ':p:.')
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elseif file == '' then
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return '[No Name]'
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end
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return vim.fn.fnamemodify(file, ':t')
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end
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---returns rendered tab
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---@return string
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function Tab:render()
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local name = self:label()
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if self.options.fmt then
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name = self.options.fmt(name or '')
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end
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if self.ellipse then -- show elipsis
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name = '...'
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else
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-- different formats for different modes
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if self.options.mode == 0 then
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name = tostring(self.tabnr)
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elseif self.options.mode == 1 then
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name = name
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else
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name = string.format('%s %s', tostring(self.tabnr), name)
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end
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end
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name = Tab.apply_padding(name, self.options.padding)
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self.len = vim.fn.strchars(name)
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-- setup for mouse clicks
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local line = string.format('%%%s@LualineSwitchTab@%s%%T', self.tabnr, name)
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-- apply highlight
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line = highlight.component_format_highlight(self.highlights[(self.current and 'active' or 'inactive')]) .. line
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-- apply separators
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if self.options.self.section < 'lualine_x' and not self.first then
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local sep_before = self:separator_before()
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line = sep_before .. line
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self.len = self.len + vim.fn.strchars(sep_before)
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elseif self.options.self.section >= 'lualine_x' and not self.last then
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local sep_after = self:separator_after()
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line = line .. sep_after
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self.len = self.len + vim.fn.strchars(sep_after)
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end
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return line
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end
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---apply separator before current tab
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---@return string
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function Tab:separator_before()
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if self.current or self.aftercurrent then
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return '%S{' .. self.options.section_separators.left .. '}'
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else
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return self.options.component_separators.left
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end
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end
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---apply separator after current tab
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---@return string
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function Tab:separator_after()
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if self.current or self.beforecurrent then
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return '%s{' .. self.options.section_separators.right .. '}'
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else
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return self.options.component_separators.right
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end
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end
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---adds spaces to left and right
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function Tab.apply_padding(str, padding)
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local l_padding, r_padding = 1, 1
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if type(padding) == 'number' then
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l_padding, r_padding = padding, padding
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elseif type(padding) == 'table' then
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l_padding, r_padding = padding.left or 0, padding.right or 0
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end
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return string.rep(' ', l_padding) .. str .. string.rep(' ', r_padding)
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end
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return Tab
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