koreader/frontend/ui/language.lua

-- high level wrapper module for gettext

local UIManager = require("ui/uimanager")
local InfoMessage = require("ui/widget/infomessage")
local _ = require("gettext")

Language = {}

function Language:changeLanguage(lang_locale)
    _.changeLang(lang_locale)
    G_reader_settings:saveSetting("language", lang_locale)
    UIManager:show(InfoMessage:new{
        text = _("Please restart reader for new language setting to take effect."),
        timeout = 3,
    })
end

function Language:genLanguageSubItem(lang, lang_locale)
    return {
        text = lang,
        callback = function()
            self:changeLanguage(lang_locale)
        end
    }
end

function Language:getLangMenuTable()
    -- cache menu table
    if not self.LangMenuTable then
        self.LangMenuTable = {
            text = _("Language"),
            -- NOTE: language with no translation are commented out for now
            sub_item_table = {
                self:genLanguageSubItem("English", "C"),
                self:genLanguageSubItem("čeština", "cs_CZ"),
                self:genLanguageSubItem("Deutsch", "de"),
                self:genLanguageSubItem("français", "fr"),
                --self:genLanguageSubItem("magyar", "hu"),
                self:genLanguageSubItem("Italiano", "it_IT"),
                self:genLanguageSubItem("Polski", "pl"),
                self:genLanguageSubItem("Português do Brasil", "pt_BR"),
                self:genLanguageSubItem("Русский язык", "ru"),
                --self:genLanguageSubItem("svenska", "sv"),
                self:genLanguageSubItem("Türkçe", "tr"),
                --self:genLanguageSubItem("Tiếng Việt", "vi"),
                self:genLanguageSubItem("简体中文", "zh_CN"),
            }
        }
    end
    return self.LangMenuTable
end

return Language