ParentFirstHeaderRenderStrategy (Wicket Parent 9.18.0-SNAPSHOT API)

java.lang.Object
- org.apache.wicket.markup.renderStrategy.AbstractHeaderRenderStrategy
- - org.apache.wicket.markup.renderStrategy.ParentFirstHeaderRenderStrategy

All Implemented Interfaces:

IHeaderRenderStrategy
```
public class ParentFirstHeaderRenderStrategy
extends AbstractHeaderRenderStrategy
```
This has been Wicket's default header render strategy before WICKET 1.5 which uses MarkupContainer.visitChildren(org.apache.wicket.util.visit.IVisitor) to traverse the hierarchy to render the children headers. Since child contributions are added to the markup after the parent contributions, children may replace / modify existing settings. Which is not good. Instead the parent (container) should be in control (see WICKET-2693).

Author:

Juergen Donnerstag

Constructor Summary

Constructors
Constructor Description

ParentFirstHeaderRenderStrategy()
Construct.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`renderChildHeaders(HtmlHeaderContainer headerContainer, Component rootComponent)`	Render the child hierarchy headers.

Methods inherited from class org.apache.wicket.markup.renderStrategy.AbstractHeaderRenderStrategy
get, renderApplicationLevelHeaders, renderHeader, renderInlineEnclosure, renderRootComponent

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ParentFirstHeaderRenderStrategy
```
public ParentFirstHeaderRenderStrategy()
```
    Construct.
- Method Detail
  - renderChildHeaders
```
protected void renderChildHeaders(HtmlHeaderContainer headerContainer,
                                  Component rootComponent)
```
    Description copied from class: AbstractHeaderRenderStrategy
    
    Render the child hierarchy headers.
    
    Specified by:
    
    renderChildHeaders in class AbstractHeaderRenderStrategy