removed ApplicationComponent.

framework/base/ApplicationComponent.php

-<?php
-/**
- * ApplicationComponent class file.
- *
- * @link http://www.yiiframework.com/
- * @copyright Copyright &copy; 2008 Yii Software LLC
- * @license http://www.yiiframework.com/license/
- */
-
-namespace yii\base;
-
-/**
- * ApplicationComponent is the base class for application component classes.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @since 2.0
- */
-class ApplicationComponent extends Component
-{
-	/**
-	 * @var string unique ID of this application component
-	 */
-	public $id;
-
-	public function init()
-	{
-		parent::init();
-		if ($this->id === null) {
-			$this->id = get_class($this);
-		}
-	}
-}

framework/base/Behavior.php

@@ -80,13 +80,14 @@ class Behavior extends \yii\base\Object
 	 * The default implementation will unset the [[owner]] property
 	 * and detach event handlers declared in [[events]].
 	 * Make sure you call the parent implementation if you override this method.
-	 * @param Component $owner the component that this behavior is to be detached from.
 	 */
-	public function detach($owner)
+	public function detach()
 	{
-		foreach ($this->events() as $event => $handler) {
-			$owner->off($event, is_string($handler) ? array($this, $handler) : $handler);
+		if ($this->owner) {
+			foreach ($this->events() as $event => $handler) {
+				$this->owner->off($event, is_string($handler) ? array($this, $handler) : $handler);
+			}
+			$this->owner = null;
 		}
-		$this->owner = null;
 	}
 }

framework/base/Component.php

@@ -76,7 +76,8 @@ class Component extends \yii\base\Object
 	 * will be implicitly called when executing `$component->property = $value;`.
 	 * @param string $name the property name or the event name
 	 * @param mixed $value the property value
-	 * @throws UnknownPropertyException if the property is not defined or read-only.
+	 * @throws UnknownPropertyException if the property is not defined
+	 * @throws InvalidCallException if the property is read-only.
 	 * @see __get
 	 */
 	public function __set($name, $value)
@@ -151,7 +152,7 @@ class Component extends \yii\base\Object
 	 * Do not call this method directly as it is a PHP magic method that
 	 * will be implicitly called when executing `unset($component->property)`.
 	 * @param string $name the property name
-	 * @throws UnknownPropertyException if the property is read only.
+	 * @throws InvalidCallException if the property is read only.
 	 */
 	public function __unset($name)
 	{
@@ -421,7 +422,7 @@ class Component extends \yii\base\Object
 	public function trigger($name, $event = null)
 	{
 		$this->ensureBehaviors();
-		if (isset($this->_e[$name])) {
+		if (isset($this->_e[$name]) && $this->_e[$name]->getCount()) {
 			if ($event === null) {
 				$event = new Event($this);
 			}
@@ -505,7 +506,7 @@ class Component extends \yii\base\Object
 		if (isset($this->_b[$name])) {
 			$behavior = $this->_b[$name];
 			unset($this->_b[$name]);
-			$behavior->detach($this);
+			$behavior->detach();
 			return $behavior;
 		} else {
 			return null;
@@ -550,7 +551,7 @@ class Component extends \yii\base\Object
 			$behavior = \Yii::createObject($behavior);
 		}
 		if (isset($this->_b[$name])) {
-			$this->_b[$name]->detach($this);
+			$this->_b[$name]->detach();
 		}
 		$behavior->attach($this);
 		return $this->_b[$name] = $behavior;

framework/base/ErrorHandler.php

@@ -20,7 +20,7 @@ namespace yii\base;
  */
 use yii\util\VarDumper;
 
-class ErrorHandler extends ApplicationComponent
+class ErrorHandler extends Component
 {
 	/**
 	 * @var integer maximum number of source code lines to be displayed. Defaults to 25.

framework/base/Module.php

@@ -427,14 +427,14 @@ abstract class Module extends Component
 	 * Retrieves the named application component.
 	 * @param string $id application component ID (case-sensitive)
 	 * @param boolean $load whether to load the component if it is not yet loaded.
-	 * @return ApplicationComponent|null the application component instance, null if the application component
+	 * @return Component|null the application component instance, null if the application component
 	 * does not exist.
 	 * @see hasComponent()
 	 */
 	public function getComponent($id, $load = true)
 	{
 		if (isset($this->_components[$id])) {
-			if ($this->_components[$id] instanceof ApplicationComponent) {
+			if ($this->_components[$id] instanceof Component) {
 				return $this->_components[$id];
 			} elseif ($load) {
 				\Yii::trace("Loading \"$id\" application component", __CLASS__);
@@ -447,10 +447,10 @@ abstract class Module extends Component
 	/**
 	 * Registers an application component in this module.
 	 * @param string $id component ID
-	 * @param ApplicationComponent|array|null $component the component to be added to the module. This can
+	 * @param Component|array|null $component the component to be added to the module. This can
 	 * be one of the followings:
 	 *
-	 * - an [[ApplicationComponent]] object
+	 * - a [[Component]] object
 	 * - a configuration array: when [[getComponent()]] is called initially for this component, the array
 	 *   will be used to instantiate the component
 	 * - null: the named component will be removed from the module
@@ -476,7 +476,7 @@ abstract class Module extends Component
 		if ($loadedOnly) {
 			$components = array();
 			foreach ($this->_components as $component) {
-				if ($component instanceof ApplicationComponent) {
+				if ($component instanceof Component) {
 					$components[] = $component;
 				}
 			}

framework/base/Request.php

@@ -13,7 +13,7 @@ namespace yii\base;
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
-class Request extends ApplicationComponent
+class Request extends Component
 {
 	private $_scriptFile;
 	private $_isConsoleRequest;

framework/base/Response.php

@@ -13,7 +13,7 @@ namespace yii\base;
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
-class Response extends ApplicationComponent
+class Response extends Component
 {
 	public function beginOutput()
 	{

framework/base/SecurityManager.php

@@ -15,7 +15,7 @@ namespace yii\base;
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
-class SecurityManager extends ApplicationComponent
+class SecurityManager extends Component
 {
 	const STATE_VALIDATION_KEY = 'Yii.SecurityManager.validationkey';
 	const STATE_ENCRYPTION_KEY = 'Yii.SecurityManager.encryptionkey';

framework/base/Theme.php

@@ -17,7 +17,7 @@ use yii\base\InvalidConfigException;
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
-class Theme extends ApplicationComponent
+class Theme extends Component
 {
 	public $basePath;
 	public $baseUrl;

framework/base/UrlManager.php

@@ -9,7 +9,7 @@
 
 namespace yii\base;
 
-use \yii\base\ApplicationComponent;
+use \yii\base\Component;
 
 /**
  * UrlManager manages the URLs of Yii applications.
@@ -123,7 +123,7 @@ use \yii\base\ApplicationComponent;
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
-class UrlManager extends ApplicationComponent
+class UrlManager extends Component
 {
 	const CACHE_KEY='Yii.UrlManager.rules';
 	const GET_FORMAT='get';

framework/db/Connection.php

@@ -9,6 +9,7 @@
 
 namespace yii\db;
 
+use yii\base\Component;
 use yii\base\InvalidConfigException;
 use yii\base\NotSupportedException;
 
@@ -70,7 +71,7 @@ use yii\base\NotSupportedException;
  * }
  * ~~~
  *
- * Connection is often used as an [[\yii\base\ApplicationComponent|application component]] and configured in the application
+ * Connection is often used as an application component and configured in the application
  * configuration like the following:
  *
  * ~~~
@@ -98,7 +99,7 @@ use yii\base\NotSupportedException;
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */
-class Connection extends \yii\base\ApplicationComponent
+class Connection extends Component
 {
 	/**
 	 * @event Event an event that is triggered after a DB connection is established