CComponent

$a=$component->text;     // equivalent to $a=$component->getText();
$component->text='abc';  // equivalent to $component->setText('abc');

// getter, defines a readable property 'text'
public function getText() { ... }
// setter, defines a writable property 'text' with $value to be set to the property
public function setText($value) { ... }

function eventHandler($event) { ... }

$component->onClick=$callback;    // or $component->onClick->add($callback);

'handleOnClick'                   // handleOnClick() is a global function
array($object,'handleOnClick')    // using $object->handleOnClick()
array('Page','handleOnClick')     // using Page::handleOnClick()

public function onClick($event)
{
    $this->raiseEvent('onClick',$event);
}

方法详情

Calls the named method which is not a class method. Do not call this method. This is a PHP magic method that we override to implement the behavior feature.

Returns a property value, an event handler list or a behavior based on its name. Do not call this method. This is a PHP magic method that we override to allow using the following syntax to read a property or obtain event handlers:

$value=$component->propertyName;
$handlers=$component->eventName;

Checks if a property value is null. Do not call this method. This is a PHP magic method that we override to allow using isset() to detect if a component property is set or not.

Sets value of a component property. Do not call this method. This is a PHP magic method that we override to allow using the following syntax to set a property or attach an event handler

$this->propertyName=$value;
$this->eventName=$callback;

Sets a component property to be null. Do not call this method. This is a PHP magic method that we override to allow using unset() to set a component property to be null.

Returns the named behavior object. The name 'asa' stands for 'as a'.

Attaches a behavior to this component. This method will create the behavior object based on the given configuration. After that, the behavior object will be initialized by calling its IBehavior::attach method.

Attaches a list of behaviors to the component. Each behavior is indexed by its name and should be an instance of IBehavior, a string specifying the behavior class, or an array of the following structure:

array(
    'class'=>'path.to.BehaviorClass',
    'property1'=>'value1',
    'property2'=>'value2',
)

Attaches an event handler to an event.

An event handler must be a valid PHP callback, i.e., a string referring to a global function name, or an array containing two elements with the first element being an object and the second element a method name of the object.

An event handler must be defined with the following signature,

function handlerName($event) {}

$component->getEventHandlers($eventName)->add($eventHandler);

$component->getEventHandlers($eventName)->insertAt(0,$eventHandler);

Determines whether a property can be read. A property can be read if the class has a getter method for the property name. Note, property name is case-insensitive.

Determines whether a property can be set. A property can be written if the class has a setter method for the property name. Note, property name is case-insensitive.

Detaches a behavior from the component. The behavior's IBehavior::detach method will be invoked.

Detaches all behaviors from the component.

Detaches an existing event handler. This method is the opposite of attachEventHandler.

Disables an attached behavior. A behavior is only effective when it is enabled.

Disables all behaviors attached to this component.

Enables an attached behavior. A behavior is only effective when it is enabled. A behavior is enabled when first attached.

Enables all behaviors attached to this component.

Evaluates a PHP expression or callback under the context of this component.

Valid PHP callback can be class method name in the form of array(ClassName/Object, MethodName), or anonymous function (only available in PHP 5.3.0 or above).

If a PHP callback is used, the corresponding function/method signature should be

function foo($param1, $param2, ..., $component) { ... }

Returns the list of attached event handlers for an event.

Determines whether an event is defined. An event is defined if the class has a method named like 'onXXX'. Note, event name is case-insensitive.

Checks whether the named event has attached handlers.

Determines whether a property is defined. A property is defined if there is a getter or setter method defined in the class. Note, property names are case-insensitive.

Raises an event. This method represents the happening of an event. It invokes all attached handlers for the event.