/**
* Attaches the behavior object to the component.
* The default implementation will set the [[owner]] property
* and attach event handlers as declared in [[events]].
* Make sure you call the parent implementation if you override this method.
* @param Component $owner the component that this behavior is to be attached to.
*/
public function attach($owner)
{
$this->owner = $owner;
foreach ($this->events() as $event => $handler) {
$owner->on($event, is_string($handler) ? [$this, $handler] : $handler);
}
}
/**
* Attaches the behavior object to the component.
* The default implementation will set the [[owner]] property
* and attach event handlers as declared in [[events]].
* Make sure you call the parent implementation if you override this method.
* @param Component $owner the component that this behavior is to be attached to.
*/
public function attach($owner)
{
$this->owner = $owner;
// 设置好行为的$owner, 使得行为可以访问，操作所依附的对象
foreach ($this->events() as $event => $handler) {
// 遍历行为中得events()返回的数组，将准备响应的事件，通过所依附类的on()绑定到类上
$owner->on($event, is_string($handler) ? [$this, $handler] : $handler);
}
}
