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Viewing file:     i18n.js (5.56 KB)      -rw-r--r--

/**
 * Copyright JS Foundation and other contributors, http://js.foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/

RED.i18n = (function() {

    var apiRootUrl;

    function detectLanguage() {
        return navigator.language
    }

    return {
        init: function(options, done) {
            apiRootUrl = options.apiRootUrl||"";
            var preferredLanguage = localStorage.getItem("editor-language") || detectLanguage();
            var opts = {
                compatibilityJSON: 'v3',
                backend: {
                    loadPath: apiRootUrl+'locales/__ns__?lng=__lng__',
                },
                lng: 'en-US',
                // debug: true,
                preload:['en-US'],
                ns: ["editor","node-red","jsonata","infotips"],
                defaultNS: "editor",
                fallbackLng: ['en-US'],
                returnObjects: true,
                keySeparator: ".",
                nsSeparator: ":",
                interpolation: {
                    unescapeSuffix: 'HTML',
                    escapeValue: false,
                    prefix: '__',
                    suffix: '__'
                }
            };
            if (preferredLanguage) {
                opts.lng = preferredLanguage;
            }

            i18next.use(i18nextHttpBackend).init(opts,function() {
                done();
            });
            jqueryI18next.init(i18next, $, { handleName: 'i18n' });


            RED["_"] = function() {
                var v = i18next.t.apply(i18next,arguments);
                if (typeof v === 'string') {
                    return v;
                } else {
                    return arguments[0];
                }
            }
        },
        lang: function() {
            // Gets the active message catalog language. This is based on what
            // locale the editor is using and what languages are available.
            //
            var preferredLangs = [localStorage.getItem("editor-language")|| detectLanguage()].concat(i18next.languages);
            var knownLangs = RED.settings.theme("languages")||["en-US"];
            for (var i=0;i<preferredLangs.length;i++) {
                if (knownLangs.indexOf(preferredLangs[i]) > -1) {
                    return preferredLangs[i]
                }
            }
            return 'en-US'
        },
        loadNodeCatalog: function(namespace,done) {
            var languageList = [localStorage.getItem("editor-language")|| detectLanguage()].concat(i18next.languages);
            var toLoad = languageList.length;
            languageList.forEach(function(lang) {
                $.ajax({
                    headers: {
                        "Accept":"application/json"
                    },
                    cache: false,
                    url: apiRootUrl+'nodes/'+namespace+'/messages?lng='+lang,
                    success: function(data) {
                        i18next.addResourceBundle(lang,namespace,data);
                        toLoad--;
                        if (toLoad === 0) {
                            done();
                        }
                    }
                });
            })

        },

        loadNodeCatalogs: function(done) {
            var languageList = [localStorage.getItem("editor-language")|| detectLanguage()].concat(i18next.languages);
            var toLoad = languageList.length;

            languageList.forEach(function(lang) {
                $.ajax({
                    headers: {
                        "Accept":"application/json"
                    },
                    cache: false,
                    url: apiRootUrl+'nodes/messages?lng='+lang,
                    success: function(data) {
                        var namespaces = Object.keys(data);
                        namespaces.forEach(function(ns) {
                            i18next.addResourceBundle(lang,ns,data[ns]);
                        });
                        toLoad--;
                        if (toLoad === 0) {
                            done();
                        }
                    }
                });
            })
        },

        loadPluginCatalogs: function(done) {
            var languageList = [localStorage.getItem("editor-language")|| detectLanguage()].concat(i18next.languages);
            var toLoad = languageList.length;

            languageList.forEach(function(lang) {
                $.ajax({
                    headers: {
                        "Accept":"application/json"
                    },
                    cache: false,
                    url: apiRootUrl+'plugins/messages?lng='+lang,
                    success: function(data) {
                        var namespaces = Object.keys(data);
                        namespaces.forEach(function(ns) {
                            i18next.addResourceBundle(lang,ns,data[ns]);
                        });
                        toLoad--;
                        if (toLoad === 0) {
                            done();
                        }
                    }
                });
            })
        },
        detectLanguage: detectLanguage
    }
})();