Differentiate between available and installed languages. Provide admin UI to install languages.

See: https://apps.sourceforge.net/trac/gallery/ticket/75 (first step for this task)

3 files changed, 44 insertions, 10 deletions

diff --git a/core/controllers/admin_languages.php b/core/controllers/admin_languages.php
index 389bbc98..5336639b 100644
--- a/core/controllers/admin_languages.php
+++ b/core/controllers/admin_languages.php
@@ -29,19 +29,30 @@ class Admin_Languages_Controller extends Admin_Controller {
     $form = $this->_languages_form();
     if ($form->validate()) {
       module::set_var("core", "default_locale", $form->choose_language->locale->value);
+      locale::update_installed($form->choose_language->installed_locales->value);
       message::success(t("Settings saved"));
     }
     url::redirect("admin/languages");
   }
 
   private function _languages_form() {
-    $locales = locale::available();
+    $all_locales = locale::available();
+    $installed_locales = locale::installed();
     $form = new Forge("admin/languages/save", "", "post", array("id" => "gLanguageSettingsForm"));
     $group = $form->group("choose_language")
       ->label(t("Please select a language"));
     $group->dropdown("locale")
-      ->options($locales)
-      ->selected(module::get_var("core", "default_locale"));
+      ->options($installed_locales)
+      ->selected(module::get_var("core", "default_locale"))
+      ->rules('required');
+    $installation_options = array();
+    foreach ($all_locales as $code => $display_name) {
+      $installation_options[$code] = array($display_name, isset($installed_locales->$code));
+    }
+    $group->checklist('installed_locales')
+      ->label('Installed Languages')
+      ->options($installation_options)
+      ->rules('required');
     $group->submit("save")->value(t("Save settings"));
     return $form;
   }
diff --git a/core/helpers/locale.php b/core/helpers/locale.php
index 6605f2af..e0e40c0e 100644
--- a/core/helpers/locale.php
+++ b/core/helpers/locale.php
@@ -35,6 +35,26 @@ class locale_Core {
     return self::$locales;
   }
 
+  static function installed() {
+    $available = self::available();
+    $default = module::get_var("core", "default_locale");
+    $codes = explode("|", module::get_var("core", "installed_locales", $default));
+    foreach ($codes as $code) {
+      if (isset($available->$code)) {
+        $installed->$code = $available->$code;
+      }
+    }
+    return $installed;
+  }
+
+  static function update_installed($locales) {
+    // Ensure that the default is included...
+    $default = module::get_var("core", "default_locale");
+    $locales = array_merge($locales, array($default));
+
+    module::set_var('core', 'installed_locales', join("|", $locales));
+  }
+  
   // TODO(andy_st): Might want to add a localizable language name as well.
   private static function _init_language_data() {
     $l->af_ZA = 'Afrikaans';                            // Afrikaans
diff --git a/modules/user/helpers/user.php b/modules/user/helpers/user.php
index e979475c..22fe6a28 100644
--- a/modules/user/helpers/user.php
+++ b/modules/user/helpers/user.php
@@ -79,13 +79,16 @@ class user_Core {
   }
 
   private static function _add_locale_dropdown(&$form, $user=null) {
-    $locales = locale::available();
-    $locales->none = t("« none »");
-    $selected_locale = ($user && $user->locale) ? $user->locale : "none";
-    $form->dropdown("locale")
-      ->label(t("Language Preference"))
-      ->options($locales)
-      ->selected($selected_locale);
+    $locales = locale::installed();
+    $locales_array = (array) $locales;
+    if (count($locales_array) > 1) {
+      $locales->none = t("« none »");
+      $selected_locale = ($user && $user->locale) ? $user->locale : "none";
+      $form->dropdown("locale")
+        ->label(t("Language Preference"))
+        ->options($locales)
+        ->selected($selected_locale);
+    }
   }
 
   static function get_delete_form_admin($user) {