Add parameter for default interface language

apps/common/locale.js

@@ -39,7 +39,8 @@ Common.Locale = new(function() {
     var l10n = null;
     var loadcallback,
         apply = false,
-        currentLang = 'en';
+        defLang = '{{DEFAULT_LANG}}',
+        currentLang = defLang;
 
     var _applyLocalization = function(callback) {
         try {
@@ -83,7 +84,7 @@ Common.Locale = new(function() {
     };
 
     var _getCurrentLanguage = function() {
-        return (currentLang || 'en');
+        return (currentLang || defLang);
     };
 
     var _getUrlParameterByName = function(name) {
@@ -94,21 +95,21 @@ Common.Locale = new(function() {
     };
 
     var _requireLang = function () {
-        var lang = (_getUrlParameterByName('lang') || 'en').split(/[\-_]/)[0];
+        var lang = (_getUrlParameterByName('lang') || defLang).split(/[\-_]/)[0];
         currentLang = lang;
         fetch('locale/' + lang + '.json')
             .then(function(response) {
                 if (!response.ok) {
-                    currentLang = 'en';
+                    currentLang = defLang;
-                    if (lang != 'en')
+                    if (lang != defLang)
                         /* load default lang if fetch failed */
-                        return fetch('locale/en.json');
+                        return fetch('locale/' + defLang + '.json');
 
                     throw new Error('server error');
                 }
                 return response.json();
             }).then(function(response) {
-                if ( response.then )
+                if ( response.json )
                     return response.json();
                 else {
                     l10n = response;

apps/common/main/lib/controller/ExternalDiagramEditor.js

@@ -48,7 +48,7 @@ define([
     'common/main/lib/view/ExternalDiagramEditor'
 ], function () { 'use strict';
     Common.Controllers.ExternalDiagramEditor = Backbone.Controller.extend(_.extend((function() {
-        var appLang         = 'en',
+        var appLang         = '{{DEFAULT_LANG}}',
             customization   = undefined,
             targetApp       = '',
             externalEditor  = null,

apps/common/main/lib/controller/ExternalMergeEditor.js

@@ -48,7 +48,7 @@ define([
     'common/main/lib/view/ExternalMergeEditor'
 ], function () { 'use strict';
     Common.Controllers.ExternalMergeEditor = Backbone.Controller.extend(_.extend((function() {
-        var appLang         = 'en',
+        var appLang         = '{{DEFAULT_LANG}}',
             customization   = undefined,
             targetApp       = '',
             externalEditor  = null;

apps/common/main/lib/controller/Themes.js

@@ -7,6 +7,8 @@ define([
 ], function () {
     'use strict';
 
+    !Common.UI && (Common.UI = {});
+    
     Common.UI.Themes = new (function(locale) {
         !locale && (locale = {});
         var themes_map = {

apps/documenteditor/main/app/view/FileMenuPanels.js

@@ -1520,7 +1520,7 @@ define([
             Common.UI.BaseView.prototype.initialize.call(this,arguments);
 
             this.menu = options.menu;
-            this.urlPref = 'resources/help/en/';
+            this.urlPref = 'resources/help/{{DEFAULT_LANG}}/';
             this.openUrl = null;
 
             this.en_data = [
@@ -1638,12 +1638,12 @@ define([
                 var config = {
                     dataType: 'json',
                     error: function () {
-                        if ( me.urlPref.indexOf('resources/help/en/')<0 ) {
+                        if ( me.urlPref.indexOf('resources/help/{{DEFAULT_LANG}}/')<0 ) {
-                            me.urlPref = 'resources/help/en/';
+                            me.urlPref = 'resources/help/{{DEFAULT_LANG}}/';
-                            store.url = 'resources/help/en/Contents.json';
+                            store.url = 'resources/help/{{DEFAULT_LANG}}/Contents.json';
                             store.fetch(config);
                         } else {
-                            me.urlPref = 'resources/help/en/';
+                            me.urlPref = 'resources/help/{{DEFAULT_LANG}}/';
                             store.reset(me.en_data);
                         }
                     },

apps/presentationeditor/main/app/view/FileMenuPanels.js

@@ -1321,7 +1321,7 @@ define([
             Common.UI.BaseView.prototype.initialize.call(this,arguments);
 
             this.menu = options.menu;
-            this.urlPref = 'resources/help/en/';
+            this.urlPref = 'resources/help/{{DEFAULT_LANG}}/';
 
             this.en_data = [
                 {"src": "ProgramInterface/ProgramInterface.htm", "name": "Introducing Presentation Editor user interface", "headername": "Program Interface"},
@@ -1421,12 +1421,12 @@ define([
                 var config = {
                     dataType: 'json',
                     error: function () {
-                        if ( me.urlPref.indexOf('resources/help/en/')<0 ) {
+                        if ( me.urlPref.indexOf('resources/help/{{DEFAULT_LANG}}/')<0 ) {
-                            me.urlPref = 'resources/help/en/';
+                            me.urlPref = 'resources/help/{{DEFAULT_LANG}}/';
-                            store.url = 'resources/help/en/Contents.json';
+                            store.url = 'resources/help/{{DEFAULT_LANG}}/Contents.json';
                             store.fetch(config);
                         } else {
-                            me.urlPref = 'resources/help/en/';
+                            me.urlPref = 'resources/help/{{DEFAULT_LANG}}/';
                             store.reset(me.en_data);
                         }
                     },

apps/spreadsheeteditor/main/app/view/FileMenuPanels.js

@@ -2176,7 +2176,7 @@ define([
             Common.UI.BaseView.prototype.initialize.call(this,arguments);
 
             this.menu = options.menu;
-            this.urlPref = 'resources/help/en/';
+            this.urlPref = 'resources/help/{{DEFAULT_LANG}}/';
 
             this.en_data = [
                 {"src": "ProgramInterface/ProgramInterface.htm", "name": "Introducing Spreadsheet Editor user interface", "headername": "Program Interface"},
@@ -2278,12 +2278,12 @@ define([
                 var config = {
                     dataType: 'json',
                     error: function () {
-                        if ( me.urlPref.indexOf('resources/help/en/')<0 ) {
+                        if ( me.urlPref.indexOf('resources/help/{{DEFAULT_LANG}}/')<0 ) {
-                            me.urlPref = 'resources/help/en/';
+                            me.urlPref = 'resources/help/{{DEFAULT_LANG}}/';
-                            store.url = 'resources/help/en/Contents.json';
+                            store.url = 'resources/help/{{DEFAULT_LANG}}/Contents.json';
                             store.fetch(config);
                         } else {
-                            me.urlPref = 'resources/help/en/';
+                            me.urlPref = 'resources/help/{{DEFAULT_LANG}}/';
                             store.reset(me.en_data);
                         }
                     },

build/Gruntfile.js

@@ -66,6 +66,9 @@ module.exports = function(grunt) {
                 }, {
                     from: /\{\{HELP_URL\}\}/g,
                     to: _encode(process.env.HELP_URL) || 'https://helpcenter.onlyoffice.com'
+                }, {
+                    from: /\{\{DEFAULT_LANG\}\}/g,
+                    to: _encode(process.env.DEFAULT_LANG) || 'en'
                 }];
 
     var helpreplacements = [