355 lines
12 KiB
Lua
355 lines
12 KiB
Lua
-- Copyright (c) 2020-2021 hoob3rt
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-- MIT license, see LICENSE for more details.
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local utils_component = require('lualine.utils.component')
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local utils = require('lualine.utils.utils')
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local highlight = require('lualine.highlight')
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local M = { }
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local theme_set = {}
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M.options = {
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icons_enabled = true,
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theme = 'gruvbox',
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component_separators = {'', ''},
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section_separators = {'', ''},
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}
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M.sections = {
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lualine_a = { 'mode' },
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lualine_b = { 'branch' },
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lualine_c = { 'filename' },
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lualine_x = { 'encoding', 'fileformat', 'filetype' },
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lualine_y = { 'progress' },
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lualine_z = { 'location' },
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}
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M.inactive_sections = {
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lualine_a = { },
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lualine_b = { },
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lualine_c = { 'filename' },
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lualine_x = { 'location' },
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lualine_y = { },
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lualine_z = { }
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}
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M.tabline = {}
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M.extensions = {}
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local function apply_configuration(config_table)
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if not config_table then return end
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local function parse_sections(section_group_name)
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if not config_table[section_group_name] then return end
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for section_name, section in pairs(config_table[section_group_name]) do
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M[section_group_name][section_name] = config_table[section_group_name][section_name]
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if type(section) == 'table' then
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for _, component in pairs(section) do
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if type(component) == 'table' and type(component[2]) == 'table' then
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local options = component[2]
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component[2] = nil
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for key, val in pairs(options) do
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component[key] = val
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end
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end
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end
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end
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end
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end
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parse_sections('options')
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parse_sections('sections')
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parse_sections('inactive_sections')
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parse_sections('tabline')
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if config_table.extensions then M.extensions = config_table.extensions end
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end
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local function check_single_separator()
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local compoennt_separator = M.options.component_separators
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local section_separator = M.options.section_separators
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if M.options.component_separators ~=nil then
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if type(M.options.component_separators) == 'string' then
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M.options.component_separators = {compoennt_separator, compoennt_separator}
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elseif #M.options.component_separators == 1 then
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M.options.component_separators = {M.options.component_separators[1], M.options.component_separators[1]}
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end
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end
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if M.options.section_separators ~=nil then
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if type(M.options.section_separators) == 'string' then
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M.options.section_separators = {section_separator, section_separator}
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elseif #M.options.section_separators == 1 then
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M.options.section_separators = {M.options.section_separators[1], M.options.section_separators[1]}
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end
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end
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end
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local function load_special_components(component)
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return function()
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-- precedence lualine_component > vim_var > lua_var > vim_function
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if component:find('[gvtwb]?o?:') == 1 then
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-- vim veriable component
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-- accepts g:, v:, t:, w:, b:, o, go:, vo:, to:, wo:, bo:
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-- filters g portion from g:var
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local scope = component:match('[gvtwb]?o?')
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-- filters var portion from g:var
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-- For some reason overwriting component var from outer scope causes the
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-- component not to work . So creating a new local name component to use:/
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local component = component:sub(#scope + 2, #component)
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-- Displays nothing when veriable aren't present
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local return_val = vim[scope][component]
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if return_val == nil then return '' end
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local ok
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ok, return_val = pcall(tostring, return_val)
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if ok then return return_val end
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return ''
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elseif loadstring(string.format('return %s ~= nil', component)) and
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loadstring(string.format([[return %s ~= nil]], component))() then
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-- lua veriable component
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return loadstring(string.format([[
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local ok, return_val = pcall(tostring, %s)
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if ok then return return_val end
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return '']], component))()
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else
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-- vim function component
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local ok, return_val = pcall(vim.fn[component])
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if not ok then return '' end -- function call failed
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ok, return_val = pcall(tostring, return_val)
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if ok then return return_val else return '' end
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end
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end
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end
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local function component_loader(component)
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if type(component[1]) == 'function' then return component end
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if type(component[1]) == 'string' then
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-- Keep component name for later use as component[1] will be overwritten
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-- With component function
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component.component_name = component[1]
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-- apply default args
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for opt_name, opt_val in pairs(M.options) do
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if component[opt_name] == nil then
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component[opt_name] = opt_val
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end
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end
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-- load the component
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local ok, loaded_component = pcall(require, 'lualine.components.' .. component.component_name)
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if not ok then
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loaded_component = load_special_components(component.component_name)
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end
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component[1] = loaded_component
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if type(component[1]) == 'table' then
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component[1] = component[1].init(component)
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end
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-- set custom highlights
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if component.color then
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local function update_color()
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component.color_highlight = highlight.create_component_highlight_group(
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component.color, component.component_name, component)
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end
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update_color()
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utils.expand_set_theme(update_color)
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end
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end
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end
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local function load_sections(sections)
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for section_name, section in pairs(sections) do
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for index, component in pairs(section) do
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if type(component) == 'string' or type(component) == 'function' then
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component = {component}
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end
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component.self = {}
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component.self.section = section_name
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component_loader(component)
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section[index] = component
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end
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end
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end
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local function load_components()
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load_sections(M.sections)
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load_sections(M.inactive_sections)
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load_sections(M.tabline)
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end
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local function load_extensions()
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for index, extension in pairs(M.extensions) do
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local local_extension = require('lualine.extensions.' .. extension)
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load_sections(local_extension.sections)
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load_sections(local_extension.inactive_sections)
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M.extensions[index] = local_extension
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end
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end
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local function lualine_set_theme()
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if type(M.options.theme) == 'string' then
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M.options.theme = require('lualine.themes.'.. M.options.theme)
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-- change the theme table in component so their custom
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-- highlights can reflect theme change
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local function reset_component_theme(sections)
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for _, section in pairs(sections)do
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for _, component in pairs(section) do
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if type(component) == 'table' then
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component.theme = M.options.theme
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end
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end
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end
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end
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reset_component_theme(M.sections)
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reset_component_theme(M.inactive_sections)
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end
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utils.clear_highlights()
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highlight.create_highlight_groups(M.options.theme)
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theme_set = M.options.theme
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end
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local function statusline(sections, is_focused)
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if M.options.theme ~= theme_set then
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_G.lualine_set_theme()
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end
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local function create_status_builder()
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-- The sequence sections should maintain
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local section_sequence = {'a', 'b', 'c', 'x', 'y', 'z'}
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local status_builder = {}
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for _, section_name in ipairs(section_sequence) do
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if sections['lualine_'..section_name] then
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-- insert highlight+components of this section to status_builder
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local section_highlight = highlight.format_highlight(is_focused,
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'lualine_'..section_name)
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local section_data = utils_component.draw_section(sections['lualine_'..section_name], section_highlight)
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if #section_data > 0 then
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table.insert(status_builder, {name = section_name, data = section_data,})
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end
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end
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end
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return status_builder
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end
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-- status_builder stores statusline without section_separators
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local status_builder = create_status_builder()
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-- Actual statusline
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local status = {}
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local half_passed = false
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for i=1,#status_builder do
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-- midsection divider
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if not half_passed and status_builder[i].name > 'c' then
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table.insert(status, highlight.format_highlight(is_focused, 'lualine_c') .. '%=')
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half_passed = true
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end
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-- provide section_separators when statusline is in focus
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if is_focused then
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-- component separator needs to have fg = current_section.bg
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-- and bg = adjacent_section.bg
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local previous_section = status_builder[i-1] or {}
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local current_section = status_builder[i]
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local next_section = status_builder[i+1] or {}
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-- For 2nd half we need to show separator before section
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if current_section.name > 'x' then
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local transitional_highlight = highlight.get_transitional_highlights(previous_section.data, current_section.data, true)
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if transitional_highlight and M.options.section_separators and M.options.section_separators[2] then
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table.insert(status, transitional_highlight .. M.options.section_separators[2])
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end
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end
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-- **( insert the actual section in the middle )** --
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table.insert(status, status_builder[i].data)
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-- For 1st half we need to show separator after section
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if current_section.name < 'c' then
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local transitional_highlight = highlight.get_transitional_highlights(current_section.data, next_section.data)
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if transitional_highlight and M.options.section_separators and M.options.section_separators[1] then
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table.insert(status, transitional_highlight .. M.options.section_separators[1])
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end
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end
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else -- when not in focus
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table.insert(status, status_builder[i].data)
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end
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end
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-- incase none of x,y,z was configured lets not fill whole statusline with a,b,c section
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if not half_passed then
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table.insert(status, highlight.format_highlight(is_focused,'lualine_c').."%=")
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end
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return table.concat(status)
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end
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-- check if any extension matches the filetype and return proper sections
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local function get_extension_sections()
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local sections, inactive_sections = nil, nil
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for _, extension in ipairs(M.extensions) do
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for _, filetype in ipairs(extension.filetypes) do
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if vim.bo.filetype == filetype then
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sections = extension.sections
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inactive_sections = extension.inactive_sections
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break
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end
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end
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end
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return {sections = sections, inactive_sections = inactive_sections}
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end
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local function status_dispatch()
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local extension_sections = get_extension_sections()
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if vim.g.statusline_winid == vim.fn.win_getid() then
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local sections = extension_sections.sections
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if sections == nil then
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sections = M.sections
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end
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return statusline(sections, true)
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else
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local inactive_sections = extension_sections.inactive_sections
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if inactive_sections == nil then
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inactive_sections = M.inactive_sections
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end
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return statusline(inactive_sections, false)
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end
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end
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local function tabline()
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return statusline(M.tabline, true)
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end
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local function setup_theme()
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lualine_set_theme()
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_G.lualine_set_theme = lualine_set_theme
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vim.api.nvim_exec([[
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augroup lualine
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autocmd!
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autocmd ColorScheme * call v:lua.lualine_set_theme()
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augroup END
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]], false)
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end
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local function set_tabline()
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if next(M.tabline) ~= nil then
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_G.lualine_tabline = tabline
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vim.o.tabline = '%!v:lua.lualine_tabline()'
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vim.o.showtabline = 2
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end
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end
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local function set_statusline()
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if next(M.sections) ~= nil or next(M.inactive_sections) ~= nil then
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_G.lualine_statusline = status_dispatch
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vim.o.statusline = '%!v:lua.lualine_statusline()'
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vim.api.nvim_exec([[
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autocmd lualine WinLeave,BufLeave * lua vim.wo.statusline=lualine_statusline()
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autocmd lualine WinEnter,BufEnter * setlocal statusline=%!v:lua.lualine_statusline()
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]], false)
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end
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end
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function M.status(config)
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apply_configuration(vim.g.lualine)
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apply_configuration(config)
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check_single_separator()
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setup_theme()
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load_components()
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load_extensions()
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set_statusline()
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set_tabline()
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end
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return M
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