Update Phabricator to work with more modular translations

Summary:
Ref T7152. Ref T1139. This updates Phabricator so third-party libraries can translate their own stuff. Also:

  - Hide "All Caps" when not in development mode, since some users have found this a little confusing.
  - With other changes, adds a "Raw Strings" mode (development mode only).
  - Add an example silly translation to make sure the serious business flag works.
  - Add a basic British English translation.
  - Simplify handling of translation overrides.

Test Plan:
  - Flipped serious business / development on and off and saw silly/development translations drop off.
  - Switched to "All Caps" and saw all caps.
  - Switched to Very English, Wow!
  - Switched to British english and saw "colour".

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T7152, T1139

Differential Revision: https://secure.phabricator.com/D11747

src/applications/base/controller/PhabricatorController.php

@@ -96,13 +96,9 @@ abstract class PhabricatorController extends AphrontController {
       $request->setUser($user);
     }
 
-    $translation = $user->getTranslation();
-    if ($translation &&
-        $translation != PhabricatorEnv::getEnvConfig('translation.provider')) {
-      $translation = newv($translation, array());
-      PhutilTranslator::getInstance()
-        ->setLanguage($translation->getLanguage())
-        ->addTranslations($translation->getCleanTranslations());
+    $locale_code = $user->getTranslation();
+    if ($locale_code) {
+      PhabricatorEnv::setLocaleCode($locale_code);
     }
 
     $preferences = $user->loadPreferences();

src/applications/config/check/PhabricatorExtraConfigSetupCheck.php

@@ -203,6 +203,9 @@ final class PhabricatorExtraConfigSetupCheck extends PhabricatorSetupCheck {
         'the server as the user you want it to run under.'),
       'notification.debug' => pht(
         'Notifications no longer have a dedicated debugging mode.'),
+      'translation.provider' => pht(
+        'The translation implementation has changed and providers are no '.
+        'longer used or supported.'),
     );
 
     return $ancient_config;

src/applications/config/option/PhabricatorTranslationsConfigOptions.php

@@ -21,19 +21,6 @@ final class PhabricatorTranslationsConfigOptions
 
   public function getOptions() {
     return array(
-      $this->newOption(
-        'translation.provider',
-        'class',
-        'PhabricatorEnglishTranslation')
-        ->setBaseClass('PhabricatorTranslation')
-        ->setSummary(pht('Translation class that should be used for strings.'))
-        ->setDescription(
-          pht(
-            'This allows customizing texts used in Phabricator. The class '.
-            'must extend PhabricatorTranslation.'))
-        ->addExample('PhabricatorEnglishTranslation', pht('Valid Setting')),
-      // TODO: This should be dict<string,string> I think, but that doesn't
-      // exist yet.
       $this->newOption('translation.override', 'wild', array())
         ->setSummary(pht('Override translations.'))
         ->setDescription(

src/applications/people/storage/PhabricatorUser.php

@@ -190,19 +190,6 @@ final class PhabricatorUser
     return '@'.$this->getUsername();
   }
 
-  public function getTranslation() {
-    try {
-      if ($this->translation &&
-          class_exists($this->translation) &&
-          is_subclass_of($this->translation, 'PhabricatorTranslation')) {
-        return $this->translation;
-      }
-    } catch (PhutilMissingSymbolException $ex) {
-      return null;
-    }
-    return null;
-  }
-
   public function isLoggedIn() {
     return !($this->getPHID() === null);
   }

src/applications/settings/panel/PhabricatorAccountSettingsPanel.php

@@ -64,20 +64,28 @@ final class PhabricatorAccountSettingsPanel extends PhabricatorSettingsPanel {
       PhutilPerson::SEX_FEMALE => $label_her,
     );
 
+    $locales = PhutilLocale::loadAllLocales();
+    $is_serious = PhabricatorEnv::getEnvConfig('phabricator.serious-business');
+    $is_dev = PhabricatorEnv::getEnvConfig('phabricator.developer-mode');
+
     $translations = array();
-    $symbols = id(new PhutilSymbolLoader())
-      ->setType('class')
-      ->setAncestorClass('PhabricatorTranslation')
-      ->setConcreteOnly(true)
-      ->selectAndLoadSymbols();
-    foreach ($symbols as $symbol) {
-      $class = $symbol['name'];
-      $translations[$class] = newv($class, array())->getName();
+    foreach ($locales as $locale) {
+      if ($is_serious && $locale->isSillyLocale()) {
+        // Omit silly locales on serious business installs.
+        continue;
+      }
+      if (!$is_dev && $locale->isTestLocale()) {
+        // Omit test locales on installs which aren't in development mode.
+        continue;
+      }
+      $translations[$locale->getLocaleCode()] = $locale->getLocaleName();
     }
+
     asort($translations);
-    $default = PhabricatorEnv::newObjectFromConfig('translation.provider');
+    // TODO: Implement "locale.default" and use it here.
+    $default = 'en_US';
     $translations = array(
-      '' => pht('Server Default (%s)', $default->getName()),
+      '' => pht('Server Default: %s', $locales[$default]->getLocaleName()),
     ) + $translations;
 
     $form = new AphrontFormView();