Class UIComponentELTag

Constructor Detail

• UIComponentELTag

  public UIComponentELTag()

Method Detail

• setBinding

  public void setBinding(ValueExpression binding)
                  throws JspException

  Set the value expression for our component.

  Parameters:

  binding - The new value expression

  Throws:

  JspException - if an error occurs

• hasBinding

  protected boolean hasBinding()

  Description copied from class: UIComponentClassicTagBase

  Return true if this component has a non-null binding attribute. This method is necessary to allow subclasses that expose the binding property as an Faces 1.1 style EL property as well as subclasses that expose it as an EL API property.

  Specified by:

  hasBinding in class UIComponentClassicTagBase

• setRendered

  public void setRendered(ValueExpression rendered)

  Set an override for the rendered attribute.

  Parameters:

  rendered - The new value for rendered attribute

• getELContext

  protected ELContext getELContext()

  Return the ELContext for the FacesContext for this request.

  This is a convenience for getFacesContext().getELContext().

  Overrides:

  getELContext in class UIComponentTagBase

• release

  public void release()

  Release any resources allocated during the execution of this tag handler.

  Specified by:

  release in interface Tag

  Overrides:

  release in class UIComponentClassicTagBase

• setProperties

  protected void setProperties(UIComponent component)

  Override properties and attributes of the specified component, if the corresponding properties of this tag handler instance were explicitly set. This method must be called ONLY if the specified UIComponent was in fact created during the execution of this tag handler instance, and this call will occur BEFORE the UIComponent is added to the view.

  Tag subclasses that want to support additional set properties must ensure that the base class setProperties() method is still called. A typical implementation that supports extra properties foo and bar would look something like this:

   protected void setProperties(UIComponent component) {
     super.setProperties(component);
     if (foo != null) {
       component.setAttribute("foo", foo);
     }
     if (bar != null) {
       component.setAttribute("bar", bar);
     }
   }
   

  The default implementation overrides the following properties:

  • rendered - Set if a value for the rendered property is specified for this tag handler instance.
  • rendererType - Set if the getRendererType() method returns a non-null value.

  Specified by:

  setProperties in class UIComponentClassicTagBase

  Parameters:

  component - UIComponent whose properties are to be overridden

• createComponent

  protected UIComponent createComponent(FacesContext context,
                                        String newId)
                                 throws JspException

  Create and return a new child component of the type returned by calling getComponentType(). If this UIComponentELTag has a non-null binding attribute, this is done by call Application.createComponent(java.lang.String) with the ValueExpression created for the binding attribute, and the ValueExpression will be stored on the component. Otherwise, Application.createComponent(java.lang.String) is called with only the component type. Finally, initialize the components id and other properties.

  Specified by:

  createComponent in class UIComponentClassicTagBase

  Parameters:

  context - FacesContext for the current request

  newId - id of the component

  Throws:

  JspException