HtmlBasedComponent.ExtraCtrl (ZK Kernel 10.3.0.FL.20260120 API)

java.lang.Object
- org.zkoss.zk.ui.HtmlBasedComponent.ExtraCtrl

All Implemented Interfaces:

PrologAllowed

Enclosing class:

HtmlBasedComponent
```
protected class HtmlBasedComponent.ExtraCtrl
extends java.lang.Object
implements PrologAllowed
```
A utility class to implement HtmlBasedComponent.getExtraCtrl(). It is used only by component developers.
If a component requires more client controls, it is suggested to override HtmlBasedComponent.getExtraCtrl() to return an instance that extends from this class.

- Constructor Summary
  
  Constructors
  Modifier Constructor Description
  
  protected ExtraCtrl()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  void setPrologContent(java.lang.String prolog)
  Sets the prolog content.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ExtraCtrl
```
protected ExtraCtrl()
```
- Method Detail
  - setPrologContent
```
public void setPrologContent(java.lang.String prolog)
```
    Description copied from interface: PrologAllowed
    
    Sets the prolog content. It is the content generated before the child components, if any.
    Default: none.
    Note: the prolog is one-shot only. Once the component is generated, the prolog is gone.
    
    Specified by:
    
    setPrologContent in interface PrologAllowed