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Diffstat (limited to 'awesome/lib/menubar/menu_gen.lua')
| -rw-r--r-- | awesome/lib/menubar/menu_gen.lua | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/awesome/lib/menubar/menu_gen.lua b/awesome/lib/menubar/menu_gen.lua new file mode 100644 index 0000000..ed2aa14 --- /dev/null +++ b/awesome/lib/menubar/menu_gen.lua @@ -0,0 +1,141 @@ +--------------------------------------------------------------------------- +--- Menu generation module for menubar +-- +-- @author Antonio Terceiro +-- @copyright 2009, 2011-2012 Antonio Terceiro, Alexander Yakushev +-- @module menubar.menu_gen +--------------------------------------------------------------------------- + +-- Grab environment +local utils = require("menubar.utils") +local icon_theme = require("menubar.icon_theme") +local pairs = pairs +local ipairs = ipairs +local string = string +local table = table + +local menu_gen = {} + +-- Options section + +local data_dir = os.getenv("XDG_DATA_HOME") +if not data_dir then + data_dir = os.getenv("HOME") .. '/.local/share/' +end + +--- Specifies all directories where menubar should look for .desktop +-- files. The search is recursive. +menu_gen.all_menu_dirs = { data_dir .. 'applications/', '/usr/share/applications/', '/usr/local/share/applications/' } + +--- Specify the mapping of .desktop Categories section to the +-- categories in the menubar. If "use" flag is set to false then any of +-- the applications that fall only to this category will not be shown. +menu_gen.all_categories = { + multimedia = { app_type = "AudioVideo", name = "Multimedia", + icon_name = "applications-multimedia", use = true }, + development = { app_type = "Development", name = "Development", + icon_name = "applications-development", use = true }, + education = { app_type = "Education", name = "Education", + icon_name = "applications-science", use = true }, + games = { app_type = "Game", name = "Games", + icon_name = "applications-games", use = true }, + graphics = { app_type = "Graphics", name = "Graphics", + icon_name = "applications-graphics", use = true }, + office = { app_type = "Office", name = "Office", + icon_name = "applications-office", use = true }, + internet = { app_type = "Network", name = "Internet", + icon_name = "applications-internet", use = true }, + settings = { app_type = "Settings", name = "Settings", + icon_name = "applications-utilities", use = true }, + tools = { app_type = "System", name = "System Tools", + icon_name = "applications-system", use = true }, + utility = { app_type = "Utility", name = "Accessories", + icon_name = "applications-accessories", use = true } +} + +--- Find icons for category entries. +function menu_gen.lookup_category_icons() + for _, v in pairs(menu_gen.all_categories) do + v.icon = icon_theme():find_icon_path(v.icon_name) + end +end + +--- Get category key name and whether it is used by its app_type. +-- @param app_type Application category as written in .desktop file. +-- @return category key name in all_categories, whether the category is used +local function get_category_name_and_usage_by_type(app_type) + for k, v in pairs(menu_gen.all_categories) do + if app_type == v.app_type then + return k, v.use + end + end +end + +--- Remove CR\LF newline from the end of the string. +-- @param s string to trim +local function trim(s) + if not s then return end + if string.byte(s, #s) == 13 then + return string.sub(s, 1, #s - 1) + end + return s +end + +--- Generate an array of all visible menu entries. +-- @tparam function callback Will be fired when all menu entries were parsed +-- with the resulting list of menu entries as argument. +-- @tparam table callback.entries All menu entries. +function menu_gen.generate(callback) + -- Update icons for category entries + menu_gen.lookup_category_icons() + + local result = {} + local unique_entries = {} + local dirs_parsed = 0 + + for _, dir in ipairs(menu_gen.all_menu_dirs) do + utils.parse_dir(dir, function(entries) + entries = entries or {} + for _, entry in ipairs(entries) do + -- Check whether to include program in the menu + if entry.show and entry.Name and entry.cmdline then + local unique_key = entry.Name .. '\0' .. entry.cmdline + if not unique_entries[unique_key] then + local target_category = nil + -- Check if the program falls into at least one of the + -- usable categories. Set target_category to be the id + -- of the first category it finds. + if entry.categories then + for _, category in pairs(entry.categories) do + local cat_key, cat_use = + get_category_name_and_usage_by_type(category) + if cat_key and cat_use then + target_category = cat_key + break + end + end + end + if target_category then + local name = trim(entry.Name) or "" + local cmdline = trim(entry.cmdline) or "" + local icon = entry.icon_path or nil + table.insert(result, { name = name, + cmdline = cmdline, + icon = icon, + category = target_category }) + unique_entries[unique_key] = true + end + end + end + end + dirs_parsed = dirs_parsed + 1 + if dirs_parsed == #menu_gen.all_menu_dirs then + callback(result) + end + end) + end +end + +return menu_gen + +-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80 |