arozos/web/script/applocale.js

/*
    Application Locale Module
    author: tobychui

    This module translate the current web application page 
    to the desired language specific by the browser.


    Example Usage:
     if (applocale){
        //Applocale found. Do localization
        applocale.init("../locale/file_explorer.json", function(){
            applocale.translate();
            //Do other init things on the page
        });
    }
*/

var applocale = {
    lang: (localStorage.getItem('global_language') == null || localStorage.getItem('global_language') == "default" ? navigator.language : localStorage.getItem('global_language')).toLowerCase(),
    localeFile: "",
    localData: {},
    init: function(localeFile, callback = undefined) {
        this.localeFile = localeFile;
        $.ajax({
            dataType: "json",
            url: localeFile,
            success: function(data) {
                applocale.localData = data;
                if (callback != undefined) {
                    callback(data);
                }
                
                if (data.keys[applocale.lang] != undefined && data.keys[applocale.lang].fwtitle != undefined && ao_module_virtualDesktop) {
                    //Update the floatwindow title as well
                    ao_module_setWindowTitle(data.keys[applocale.lang].fwtitle);
                }

                if (data.keys[applocale.lang] != undefined && data.keys[applocale.lang].fontFamily != undefined){
                    //This language has a prefered font family. Inject it
                    $("h1, h2, h3, p, span, div, a, button").css({
                        "font-family":data.keys[applocale.lang].fontFamily
                    });
                    console.log("[Applocale] Updating font family to: ", data.keys[applocale.lang].fontFamily)
                }
              
            }
        });
    },
    translate: function(targetLang = "") {
        var targetLang = targetLang || this.lang;
        //Check if the given locale exists
        if (this.localData == undefined || this.localData.keys === undefined || this.localData.keys[targetLang] == undefined) {
            console.log("[Applocale] This language is not supported. Using default")
            return
        }

        //Update the page content to fit the localization
        let hasTitleLocale = (this.localData.keys[targetLang].titles !== undefined);
        let hasStringLocale = (this.localData.keys[targetLang].strings !== undefined);
        let hasPlaceHolderLocale = (this.localData.keys[targetLang].placeholder !== undefined);
        let localizedDataset =  this.localData.keys[targetLang];
        $("*").each(function() {
            if ($(this).attr("title") != undefined && hasTitleLocale) {
                let targetString = localizedDataset.titles[$(this).attr("title")];
                if (targetString != undefined) {
                    $(this).attr("title", targetString);
                }

            }

            if ($(this).attr("locale") != undefined && hasStringLocale) {
                let targetString = localizedDataset.strings[$(this).attr("locale")];
                if (targetString != undefined) {
                    $(this).html(targetString);
                }
            }

            if ($(this).attr("placeholder") != undefined && hasPlaceHolderLocale) {
                let targetString = localizedDataset.placeholder[$(this).attr("placeholder")];
                if (targetString != undefined) {
                    $(this).attr("placeholder", targetString);
                }
            }
        })

        if (applocale.localData.keys[applocale.lang] != undefined && applocale.localData.keys[applocale.lang].fontFamily != undefined){
            //This language has a prefered font family. Inject it
            $("h1, h2, h3, p, span, div, a").css({
                "font-family":applocale.localData.keys[applocale.lang].fontFamily
            });
        }
    },
    getString: function(key, original, type = "strings") {
        var targetLang = this.lang;
        if (this.localData.keys === undefined || this.localData.keys[targetLang] == undefined) {
            return original;
        }
        let targetString = this.localData.keys[targetLang].strings[key];
        if (targetString != undefined) {
            return targetString
        } else {
            return original
        }
    }
}