minor touch up of swiftmailer.

extensions/swiftmailer/Mailer.php

@@ -7,9 +7,9 @@
 
 namespace yii\swiftmailer;
 
+use Yii;
 use yii\base\InvalidConfigException;
 use yii\mail\BaseMailer;
-use Yii;
 
 /**
  * Mailer based on SwiftMailer library.
@@ -116,13 +116,14 @@ class Mailer extends BaseMailer
 	 */
 	protected function createTransport(array $config)
 	{
-		if (array_key_exists('class', $config)) {
+		if (isset($config['class'])) {
 			$className = $config['class'];
 			unset($config['class']);
 		} else {
 			$className = 'Swift_MailTransport';
 		}
-		$transport = call_user_func([$className, 'newInstance']);
+		/** @var \Swift_MailTransport $transport */
+		$transport = $className::newInstance();
 		if (!empty($config)) {
 			foreach ($config as $name => $value) {
 				if (property_exists($transport, $name)) {

extensions/swiftmailer/README.md

-Yii 2.0 Public Preview - SwiftMailer Mail Solution
-==================================================
+SwiftMailer Extension for Yii 2
+===============================
 
-Thank you for choosing Yii - a high-performance component-based PHP framework.
+This extension provides a `SwiftMailer` mail solution for Yii 2.
 
-If you are looking for a production-ready PHP framework, please use
-[Yii v1.1](https://github.com/yiisoft/yii).
+To use this extension,  simply add the following code in your application configuration:
 
-Yii 2.0 is still under heavy development. We may make significant changes
-without prior notices. **Yii 2.0 is not ready for production use yet.**
+```php
+return [
+	//....
+	'components' => [
+		'mail' => [
+			'class' => 'yii\swiftmailer\Mailer',
+		],
+	],
+];
+```
+
+You can then send an email as follows:
 
-[![Build Status](https://secure.travis-ci.org/yiisoft/yii2.png)](http://travis-ci.org/yiisoft/yii2)
+```php
+Yii::$app->mail->compose('contact/html')
+     ->from('from@domain.com')
+     ->to($form->email)
+     ->subject($form->subject)
+     ->send();
+```
 
-This is the yii2-swiftmailer extension.
+For further instructions refer to the related section in the Yii Definitive Guide.
 
 
 Installation
@@ -20,39 +35,15 @@ Installation
 The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
 
 Either run
+
 ```
 php composer.phar require yiisoft/yii2-swiftmailer "*"
 ```
 
 or add
+
 ```json
 "yiisoft/yii2-swiftmailer": "*"
 ```
-to the require section of your composer.json.
-
-
-*Note: You might have to run `php composer.phar selfupdate`*
-
-
-Usage & Documentation
----------------------
-
-This extension has to be registered prior to usage.
-To enable this view renderer add it to the $rendereres property of your view object.
-
-Example:
-
-```php
-<?php
-// config.php
-return [
-	//....
-	'components' => [
-		'mail' => [
-			'class' => 'yii\swiftmailer\Mailer',
-		],
-	],
-];
-```
 
-For further instructions refer to the related section in the yii guide.
+to the require section of your composer.json.

framework/yii/mail/BaseMailer.php

@@ -7,9 +7,9 @@
 
 namespace yii\mail;
 
+use Yii;
 use yii\base\Component;
 use yii\base\InvalidConfigException;
-use Yii;
 use yii\base\ViewContextInterface;
 
 /**
@@ -46,6 +46,7 @@ abstract class BaseMailer extends Component implements MailerInterface, ViewCont
 	 * @var array configuration, which should be applied by default to any new created
 	 * email message instance.
 	 * In addition to normal [[Yii::createObject()]] behavior extra config keys are available:
+	 *
 	 *  - 'charset' argument for [[MessageInterface::charset()]]
 	 *  - 'from' argument for [[MessageInterface::from()]]
 	 *  - 'to' argument for [[MessageInterface::to()]]
@@ -54,7 +55,9 @@ abstract class BaseMailer extends Component implements MailerInterface, ViewCont
 	 *  - 'subject' argument for [[MessageInterface::subject()]]
 	 *  - 'textBody' argument for [[MessageInterface::textBody()]]
 	 *  - 'htmlBody' argument for [[MessageInterface::htmlBody()]]
+	 *
 	 * For example:
+	 *
 	 * ~~~
 	 * array(
 	 *     'charset' => 'UTF-8',

framework/yii/mail/BaseMessage.php

@@ -7,9 +7,7 @@
 
 namespace yii\mail;
 
-use yii\base\InvalidParamException;
 use yii\base\Object;
-use yii\helpers\FileHelper;
 use Yii;
 
 /**

framework/yii/mail/MailerInterface.php

@@ -11,6 +11,7 @@ namespace yii\mail;
  * MailerInterface is an interface, which any mailer should apply.
  * Mailer creates and sends messages. Also it allows composition of the message
  * body via view rendering:
+ *
  * ~~~php
  * Yii::$app->mail->compose('contact/html', ['contactForm' => $form])
  *     ->from('from@domain.com')
@@ -29,12 +30,16 @@ interface MailerInterface
 	/**
 	 * Creates new message optionally filling up its body via view rendering.
 	 * The view to be rendered can be specified in one of the following formats:
+	 *
 	 * - path alias (e.g. "@app/mails/contact/body");
 	 * - relative path (e.g. "contact"): the actual view file will be resolved by [[\yii\base\ViewContextInterface]].
+	 *
 	 * @param string|array $view view, which should be used to render message body
+	 *
 	 *  - if string - the view name or the path alias of the HTML body view file, in this case
 	 * text body will be composed automatically from html one.
 	 *  - if array - list of views for each body type in format: ['html' => 'htmlView', 'text' => 'textView']
+	 *
 	 * @param array $params the parameters (name-value pairs) that will be extracted and made available in the view file.
 	 * @return MessageInterface message instance.
 	 */

framework/yii/mail/MessageInterface.php

@@ -11,6 +11,7 @@ namespace yii\mail;
  * MessageInterface is an interface, which email message should apply.
  * Together with application component, which matches the [[MailerInterface]],
  * it introduces following mail sending syntax:
+ *
  * ~~~php
  * Yii::$app->mail->compose()
  *     ->from('from@domain.com')
@@ -100,8 +101,10 @@ interface MessageInterface
 	 * Attaches existing file to the email message.
 	 * @param string $fileName full file name
 	 * @param array $options options for embed file. Valid options are:
+	 *
 	 * - fileName: name, which should be used to attach file.
 	 * - contentType: attached file MIME type.
+	 *
 	 * @return static self reference.
 	 */
 	public function attach($fileName, array $options = []);
@@ -110,8 +113,10 @@ interface MessageInterface
 	 * Attach specified content as file for the email message.
 	 * @param string $content attachment file content.
 	 * @param array $options options for embed file. Valid options are:
+	 *
 	 * - fileName: name, which should be used to attach file.
 	 * - contentType: attached file MIME type.
+	 *
 	 * @return static self reference.
 	 */
 	public function attachContent($content, array $options = []);
@@ -121,8 +126,10 @@ interface MessageInterface
 	 * This method should be used when embedding images or other data in a message.
 	 * @param string $fileName file name.
 	 * @param array $options options for embed file. Valid options are:
+	 *
 	 * - fileName: name, which should be used to attach file.
 	 * - contentType: attached file MIME type.
+	 *
 	 * @return string attachment CID.
 	 */
 	public function embed($fileName, array $options = []);
@@ -132,8 +139,10 @@ interface MessageInterface
 	 * This method should be used when embedding images or other data in a message.
 	 * @param string $content  attachment file content.
 	 * @param array $options options for embed file. Valid options are:
+	 *
 	 * - fileName: name, which should be used to attach file.
 	 * - contentType: attached file MIME type.
+	 *
 	 * @return string attachment CID.
 	 */
 	public function embedContent($content, array $options = []);