dotfiles/awesome/freedesktop/menu.lua

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2020-05-16 20:07:21 +00:00
--[[
Awesome-Freedesktop
Freedesktop.org compliant desktop entries and menu
Menu section
Licensed under GNU General Public License v2
* (c) 2016, Luke Bonham
* (c) 2014, Harvey Mittens
--]]
local awful_menu = require("awful.menu")
local menu_gen = require("menubar.menu_gen")
local menu_utils = require("menubar.utils")
--local icon_theme = require("menubar.icon_theme")
local io, pairs, string, table, os = io, pairs, string, table, os
-- Add support for NixOS systems too
table.insert(menu_gen.all_menu_dirs, string.format("%s/.nix-profile/share/applications", os.getenv("HOME")))
-- Expecting a wm_name of awesome omits too many applications and tools
menu_utils.wm_name = ""
-- Menu
-- freedesktop.menu
local menu = {}
-- Determines if a path points to a directory, by checking if it can be read
-- (which is `nil` also for empty files) and if its size is not 0.
-- @author blueyed
-- @param path the path to check
function menu.is_dir(path)
local f = io.open(path)
return f and not f:read(0) and f:seek("end") ~= 0 and f:close()
end
-- Remove non existent paths in order to avoid issues
local existent_paths = {}
for k,v in pairs(menu_gen.all_menu_dirs) do
if menu.is_dir(v) then
table.insert(existent_paths, v)
end
end
menu_gen.all_menu_dirs = existent_paths
-- Determines whether an table includes a certain element
-- @param tab a given table
-- @param val the element to search for
-- @return true if the given string is found within the search table; otherwise, false if not
function menu.has_value (tab, val)
for index, value in pairs(tab) do
if val:find(value) then
return true
end
end
return false
end
-- Use MenuBar parsing utils to build a menu for Awesome
-- @return awful.menu
function menu.build(args)
local args = args or {}
-- local icon_size = args.icon_size
local before = args.before or {}
local after = args.after or {}
local skip_items = args.skip_items or {}
local sub_menu = args.sub_menu or false
local result = {}
local _menu = awful_menu({ items = before })
menu_gen.generate(function(entries)
-- Add category icons
for k in pairs(menu_gen.all_categories) do
table.insert(result, { k, {}, })
end
-- Get items table
for k, v in pairs(entries) do
for _, cat in pairs(result) do
if cat[1] == v.category then
if not menu.has_value(skip_items, v.name) then
table.insert(cat[2], { v.name, v.cmdline })
end
break
end
end
end
-- Cleanup things a bit
for i = #result, 1, -1 do
local v = result[i]
if #v[2] == 0 then
-- Remove unused categories
table.remove(result, i)
else
--Sort entries alphabetically (by name)
table.sort(v[2], function (a, b) return string.byte(a[1]) < string.byte(b[1]) end)
-- Replace category name with nice name
v[1] = menu_gen.all_categories[v[1]].name
end
end
-- Sort categories alphabetically also
table.sort(result, function(a, b) return string.byte(a[1]) < string.byte(b[1]) end)
-- Add menu item to hold the generated menu
if sub_menu then
result = {{sub_menu, result}}
end
-- Add items to menu
for _, v in pairs(result) do _menu:add(v) end
for _, v in pairs(after) do _menu:add(v) end
end)
-- Set icon size
--[[ if icon_size then
for _,v in pairs(menu_gen.all_categories) do
v.icon = icon_theme():find_icon_path(v.icon_name, icon_size)
end
end
--]]
-- Hold the menu in the module
menu.menu = _menu
return _menu
end
return menu