Respect languages preferences on login page

Fixes #4169

NEWS

@@ -8,7 +8,7 @@ Enhancements
  - [core] now possible to {un}subscribe to folders using sogo-tool
 
 Bug fixes
- -
+ - [web] respect SOGoLanguage and SOGoSupportedLanguages (#4169)
 
 3.2.9 (2017-05-09)
 ------------------

SoObjects/SOGo/SOGoDefaults.plist

@@ -39,6 +39,7 @@
     SOGoEnableDomainBasedUID = NO;
 
     SOGoLoginModule = "Mail";
+    WODefaultLanguages = ();
     SOGoLanguage = "English";
     SOGoSupportedLanguages = (
         "Arabic",

SoObjects/SOGo/WOContext+SOGo.m

@@ -22,6 +22,7 @@
 #import <NGObjWeb/WORequest.h>
 
 #import "SOGoDomainDefaults.h"
+#import "SOGoSystemDefaults.h"
 #import "SOGoUser.h"
 
 #import "WOContext+SOGo.h"
@@ -31,14 +32,21 @@
 - (NSArray *) resourceLookupLanguages
 {
   NSMutableArray *languages;
-  NSArray *browserLanguages;
+  NSArray *browserLanguages, *supportedLanguages;
+  SOGoSystemDefaults *sd;
   SOGoUser *user;
   NSString *language, *theme;
-  
+
   languages = [NSMutableArray array];
   user = [self activeUser];
-  theme = [[self request] formValueForKey: @"theme"];
 
+  // Retrieve language parameter
+  language = [[self request] formValueForKey: @"language"];
+  if ([language length] > 0)
+      [languages addObject: language];
+
+  // Retrieve theme argument
+  theme = [[self request] formValueForKey: @"theme"];
   if ([theme length] > 0)
     {
       if ([theme hasSuffix: @"/"])
@@ -52,18 +60,28 @@
 
   if (!user || [[user login] isEqualToString: @"anonymous"])
     {
+      // Use browser's languages
       browserLanguages = [[self request] browserLanguages];
       [languages addObjectsFromArray: browserLanguages];
     }
   else
     {
+      // Use user's language or domain's language
       language = [[user userDefaults] language];
       [languages addObject: language];
       language = [[user domainDefaults] language];
       [languages addObject: language];
     }
 
-  return languages;
+  // Return the first language matching a supported language or the SOGoLanguage
+  // default if none is matching.
+  sd = [SOGoSystemDefaults sharedSystemDefaults];
+  supportedLanguages = [sd supportedLanguages];
+  language = [languages firstObjectCommonWithArray: supportedLanguages];
+  if (!(language && [language isKindOfClass: [NSString class]]))
+    language = [sd stringForKey: @"SOGoLanguage"];
+
+  return [NSArray arrayWithObject: language];
 }
 
 @end

UI/MainUI/SOGoRootPage.m

@@ -72,6 +72,11 @@
 
 /* accessors */
 
+- (NSString *) modulePath
+{
+  return @"";
+}
+
 //- (NSString *) connectURL
 //{
 //  return [NSString stringWithFormat: @"%@/connect", [self applicationPath]];
@@ -525,6 +530,11 @@
   return item;
 }
 
+- (NSString *) language
+{
+  return [[context resourceLookupLanguages] objectAtIndex: 0];
+}
+
 - (NSArray *) languages
 {
   return [[SOGoSystemDefaults sharedSystemDefaults] supportedLanguages];

UI/Templates/MainUI/SOGoRootPage.wox

@@ -11,6 +11,7 @@
     >
   <script type="text/javascript">
     var cookieUsername = '<var:string var:value="cookieUsername" const:escapeHTML="NO"/>';
+    var language = '<var:string var:value="language" const:escapeHTML="NO"/>';
   </script>
 
   <!--
@@ -56,7 +57,7 @@
               <md-icon>language</md-icon>
               <md-input-container class="md-flex">
                 <label><var:string label:value="choose"/></label>
-                <md-select ng-model="app.creds.language">
+                <md-select ng-model="app.creds.language" ng-change="app.changeLanguage($event)">
                   <var:foreach list="languages" item="item">
                     <md-option var:value="item">
                       <var:string value="languageText"/>

UI/WebServerResources/js/Main/Main.app.js

@@ -13,20 +13,21 @@
   function LoginController($scope, $window, $timeout, Dialog, $mdDialog, Authentication) {
     var vm = this;
 
-    vm.creds = {
-      username: $window.cookieUsername,
-      password: null,
-      rememberLogin: angular.isDefined($window.cookieUsername) && $window.cookieUsername.length > 0
+    this.$onInit = function() {
+      this.creds = {
+        username: $window.cookieUsername,
+        password: null,
+        language: $window.language,
+        rememberLogin: angular.isDefined($window.cookieUsername) && $window.cookieUsername.length > 0
+      };
+      this.loginState = false;
+
+      // Show login once everything is initialized
+      this.showLogin = false;
+      $timeout(function() { vm.showLogin = true; }, 100);
     };
-    vm.login = login;
-    vm.loginState = false;
-    vm.showAbout = showAbout;
 
-    // Show login once everything is initialized
-    vm.showLogin = false;
-    $timeout(function() { vm.showLogin = true; }, 100);
-
-    function login() {
+    this.login = function() {
       vm.loginState = 'authenticating';
       Authentication.login(vm.creds)
         .then(function(data) {
@@ -45,9 +46,9 @@
           vm.errorMessage = msg.error;
         });
       return false;
-    }
+    };
 
-    function showAbout($event) {
+    this.showAbout = function($event) {
       $mdDialog.show({
         targetEvent: $event,
         templateUrl: 'aboutBox.html',
@@ -60,7 +61,12 @@
           $mdDialog.hide();
         };
       }
-    }
+    };
+
+    this.changeLanguage = function($event) {
+      // Reload page
+      $window.location.href = ApplicationBaseURL + 'login?language=' + this.creds.language;
+    };
   }
 
   angular