CS fixes, made EventDispatcher optional in factory method

src/Composer/Command/CreateProjectCommand.php

@@ -18,7 +18,6 @@ use Composer\Installer\ProjectInstaller;
 use Composer\IO\IOInterface;
 use Composer\Repository\ComposerRepository;
 use Composer\Repository\FilesystemRepository;
-use Composer\Script\EventDispatcher;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
@@ -119,8 +118,7 @@ EOT
         chdir($directory);
 
         $composer = Factory::create($io);
-        $eventDispatcher = new EventDispatcher($composer, $io);
+        $installer = Installer::create($io, $composer);
-        $installer = Installer::create($io, $composer, $eventDispatcher);
 
         $installer->run($preferSource);
     }

src/Composer/Command/InstallCommand.php

@@ -13,7 +13,6 @@
 namespace Composer\Command;
 
 use Composer\Installer;
-use Composer\Script\EventDispatcher;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -52,8 +51,7 @@ EOT
     {
         $composer = $this->getComposer();
         $io = $this->getApplication()->getIO();
-        $eventDispatcher = new EventDispatcher($composer, $io);
+        $install = Installer::create($io, $composer);
-        $install = Installer::create($io, $composer, $eventDispatcher);
 
         return $install->run(
             (Boolean) $input->getOption('prefer-source'),

src/Composer/Installer.php

@@ -33,46 +33,44 @@ use Composer\Repository\RepositoryManager;
 use Composer\Script\EventDispatcher;
 use Composer\Script\ScriptEvents;
 
+/**
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ * @author Beau Simensen <beau@dflydev.com>
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
 class Installer
 {
     /**
-     * 
      * @var IOInterface
      */
     protected $io;
 
     /**
-     *
      * @var PackageInterface
      */
     protected $package;
 
     /**
-     * 
      * @var DownloadManager
      */
     protected $downloadManager;
 
     /**
-     * 
      * @var RepositoryManager
      */
     protected $repositoryManager;
 
     /**
-     * 
      * @var Locker
      */
     protected $locker;
 
     /**
-     * 
      * @var InstallationManager
      */
     protected $installationManager;
 
     /**
-     * 
      * @var EventDispatcher
      */
     protected $eventDispatcher;
@@ -102,12 +100,12 @@ class Installer
     /**
      * Run installation (or update)
      *
-     * @param bool $preferSource
+     * @param Boolean $preferSource
-     * @param bool $dryRun
+     * @param Boolean $dryRun
-     * @param bool $verbose
+     * @param Boolean $verbose
-     * @param bool $noInstallRecommends
+     * @param Boolean $noInstallRecommends
-     * @param bool $installSuggests
+     * @param Boolean $installSuggests
-     * @param bool $update
+     * @param Boolean $update
      * @param RepositoryInterface $additionalInstalledRepository
      */
     public function run($preferSource = false, $dryRun = false, $verbose = false, $noInstallRecommends = false, $installSuggests = false, $update = false, RepositoryInterface $additionalInstalledRepository = null)
@@ -322,8 +320,10 @@ class Installer
      * @param EventDispatcher $eventDispatcher
      * @return Installer
      */
-    static public function create(IOInterface $io, Composer $composer, EventDispatcher $eventDispatcher)
+    static public function create(IOInterface $io, Composer $composer, EventDispatcher $eventDispatcher = null)
     {
+        $eventDispatcher = $eventDispatcher ?: new EventDispatcher($composer, $io);
+
         return new static(
             $io,
             $composer->getPackage(),