Respect languages preferences on login page

Fixes #4169

NEWS

@@ -16,6 +16,7 @@ Bug fixes
  - [core] newly subscribed calendars are excluded from freebusy (#3354)
  - [core] strip cr during LDIF import process (#4172)
  - [web] fixed mail delegation of pristine user accounts (#4160)
+ - [web] respect SOGoLanguage and SOGoSupportedLanguages (#4169)
  - [eas] fixed opacity in EAS freebusy (#4033)
  - [eas] set reply/forwarded flags when ReplaceMime is set (#4133)
  - [eas] remove alarms over EAS if we don't want them (#4059)

SoObjects/SOGo/SOGoDefaults.plist

@@ -38,6 +38,7 @@
     SOGoEnableDomainBasedUID = NO;
 
     SOGoLoginModule = "Mail";
+    WODefaultLanguages = ();
     SOGoLanguage = "English";
     SOGoSupportedLanguages = (
         "Arabic",

SoObjects/SOGo/WOContext+SOGo.m

@@ -26,6 +26,7 @@
 #import <NGObjWeb/WOSession.h>
 
 #import "SOGoDomainDefaults.h"
+#import "SOGoSystemDefaults.h"
 #import "SOGoUser.h"
 #import "SOGoUserDefaults.h"
 
@@ -36,34 +37,43 @@
 - (NSArray *) resourceLookupLanguages
 {
   NSMutableArray *languages;
-  NSArray *browserLanguages;
+  NSArray *browserLanguages, *supportedLanguages;
+  SOGoSystemDefaults *sd;
   SOGoUser *user;
   NSString *language;
   
   languages = [NSMutableArray array];
   user = [self activeUser];
+
+  // Retrieve language parameter
+  language = [[self request] formValueForKey: @"language"];
+  if ([language length] > 0)
+    [languages addObject: language];
+
   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];
     }
 
-  // if (activeUser && [activeUser language])
-  //   [languages addObject: [activeUser language]];
-  
-  // if ([self hasSession])
-  //   [languages addObjectsFromArray: [[self session] languages]];
-  // else
-  //   [languages addObjectsFromArray: [[self request] browserLanguages]];
+  // 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 languages;
+  return [NSArray arrayWithObject: language];
 }
 
 @end

UI/MainUI/SOGoRootPage.h

@@ -31,6 +31,8 @@
   NSString *cookieLogin;
 }
 
+- (NSArray *) languages;
+
 @end
 
 #endif /* SOGOROOTPAGE_H */

UI/MainUI/SOGoRootPage.m

@@ -521,6 +521,16 @@
   return item;
 }
 
+- (BOOL) hasManyLanguages
+{
+  return [[self languages] count] > 1;
+}
+
+- (NSString *) language
+{
+  return [[context resourceLookupLanguages] objectAtIndex: 0];
+}
+
 - (NSArray *) languages
 {
   return [[SOGoSystemDefaults sharedSystemDefaults] supportedLanguages];

UI/Templates/MainUI/SOGoRootPage.wox

@@ -42,20 +42,22 @@
 	    <label><var:string label:value="Password"/><br/>
 	    <input class="textField" id="password"
 		   name="password" type="password" var:value="password" /></label>
+            <var:if condition="hasManyLanguages">
 	    <label><var:string label:value="Language"/><br/>
 	    <var:popup const:id="language" const:name="language"
 		       list="languages"
 		       item="item"
 		       var:value="item"
+		       var:selection="language"
 		       string="languageText"
 		       label:noSelectionString="choose"
 		       /></label>
+            </var:if>
             <var:if condition="hasLoginDomains">
 	    <label><var:string label:value="Domain"/><br/>
 	    <var:popup const:id="domain" const:name="domain"
 		       list="loginDomains"
 		       item="item"
-		       var:selection="item"
 		       var:value="item"
 		       string="item"
 		       /></label>

UI/WebServerResources/SOGoRootPage.js

@@ -24,6 +24,15 @@ function initLogin() {
                 event.stop() });
     }
 
+    var language = $("language");
+    if (language)
+        language.on("change", function(event) {
+                var value = $("language").value;
+                if (value != "WONoSelectionString")
+                    // Reload page
+                    window.location.href = ApplicationBaseURL + '/login?language=' + value;
+            });
+
     var submit = $("submit");
     submit.observe("click", onLoginClick);