DelegatingMetaTagHandler

java.lang.Object
- jakarta.faces.view.facelets.TagHandler
- - jakarta.faces.view.facelets.MetaTagHandler
  - - jakarta.faces.view.facelets.DelegatingMetaTagHandler

All Implemented Interfaces:

FaceletHandler

Direct Known Subclasses:

ComponentHandler, FaceletsAttachedObjectHandler
```
public abstract class DelegatingMetaTagHandler
extends MetaTagHandler
```
Enable the Jakarta Faces implementation to provide the appropriate behavior for the kind of MetaTagHandler subclass for each kind of element in the view, while providing a base-class from which those wanting to make a Java language custom tag handler can inherit. The Jakarta Server Faces runtime provides the implementation of getTagHandlerDelegate() for the appropriate subclass.

Field Summary

Fields
Modifier and Type Field and Description

protected TagHandlerDelegateFactory delegateFactory
Class that defines methods relating to helping tag handler instances.
- Fields inherited from class jakarta.faces.view.facelets.TagHandler
  nextHandler, tag, tagId

Fields
Modifier and Type	Field and Description
`protected TagHandlerDelegateFactory`	`delegateFactory` Class that defines methods relating to helping tag handler instances.

Constructor Summary

Constructors
Constructor and Description

DelegatingMetaTagHandler(TagConfig config)
Instantiates this handler with the given config.

Constructors
Constructor and Description
`DelegatingMetaTagHandler(TagConfig config)` Instantiates this handler with the given config.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`apply(FaceletContext ctx, UIComponent parent)` The default implementation simply calls through to `TagHandlerDelegate.apply(jakarta.faces.view.facelets.FaceletContext, jakarta.faces.component.UIComponent)`.
`void`	`applyNextHandler(FaceletContext ctx, UIComponent c)` Invoke the `apply()` method on this instance's `TagHandler.nextHandler`.
`protected MetaRuleset`	`createMetaRuleset(java.lang.Class type)` The default implementation simply calls through to `TagHandlerDelegate.createMetaRuleset(java.lang.Class)` and returns the result.
`TagAttribute`	`getBinding()` Return the "binding" attribute.
`Tag`	`getTag()` Return a reference to the `Tag` instance corresponding to this `TagHandler` instance.
`TagAttribute`	`getTagAttribute(java.lang.String localName)` Return the named attribute from the tag attributes.
`protected abstract TagHandlerDelegate`	`getTagHandlerDelegate()` Get the tag handler delegate.
`java.lang.String`	`getTagId()` Return the tag id from the `TagConfig` used to instantiate this handler.
`boolean`	`isDisabled(FaceletContext ctx)` Returns the value of the "disabled" attribute.
`void`	`setAttributes(FaceletContext ctx, java.lang.Object instance)` Invoking/extending this method will cause the results of the created MetaRuleset to auto-wire state to the passed instance.

Methods inherited from class jakarta.faces.view.facelets.TagHandler
getAttribute, getRequiredAttribute, toString

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

- Field Detail
  - delegateFactory
```
protected TagHandlerDelegateFactory delegateFactory
```
    Class that defines methods relating to helping tag handler instances.
- Constructor Detail
  - DelegatingMetaTagHandler
```
public DelegatingMetaTagHandler(TagConfig config)
```
    Instantiates this handler with the given config.
    
    Parameters:
    
    config - the config used to instantiate this handler.
- Method Detail
  - getTagHandlerDelegate
```
protected abstract TagHandlerDelegate getTagHandlerDelegate()
```
    Get the tag handler delegate.
    
    Code that extends from DelegatingMetaTagHandler (directly or indirectly, as through extending ComponentHandler) must take care to decorate, not replace, the TagHandlerDelegate instance returned by this method. Failure to do so may produce unexpected results.
    
    Returns:
    
    the tag handler delegate.
  - isDisabled
```
public boolean isDisabled(FaceletContext ctx)
```
    Returns the value of the "disabled" attribute.
    
    Parameters:
    
    ctx - the context used for resolving the underlying attribute.
    
    Returns:
    
    true if the "disabled" attribute has been set to true, false otherwise.
  - getBinding
```
public TagAttribute getBinding()
```
    Return the "binding" attribute.
    
    Returns:
    
    the "binding" attribute.
  - getTag
```
public Tag getTag()
```
    Return a reference to the Tag instance corresponding to this TagHandler instance.
    
    Returns:
    
    a reference to the Tag instance.
  - getTagId
```
public java.lang.String getTagId()
```
    Return the tag id from the TagConfig used to instantiate this handler.
    
    Returns:
    
    the tag id from the TagConfig.
  - getTagAttribute
```
public TagAttribute getTagAttribute(java.lang.String localName)
```
    Return the named attribute from the tag attributes.
    
    Parameters:
    
    localName - the name of the attribute.
    
    Returns:
    
    the named attribute from the tag attributes.
  - setAttributes
```
public void setAttributes(FaceletContext ctx,
                          java.lang.Object instance)
```
    Description copied from class: MetaTagHandler
    
    Invoking/extending this method will cause the results of the created MetaRuleset to auto-wire state to the passed instance.
    
    Overrides:
    
    setAttributes in class MetaTagHandler
    
    Parameters:
    
    ctx - the Facelet context.
    
    instance - the instance.
  - apply
```
public void apply(FaceletContext ctx,
                  UIComponent parent)
           throws java.io.IOException
```
    The default implementation simply calls through to TagHandlerDelegate.apply(jakarta.faces.view.facelets.FaceletContext, jakarta.faces.component.UIComponent).
    
    Parameters:
    
    ctx - the FaceletContext for this view execution
    
    parent - the parent UIComponent of the component represented by this element instance.
    
    Throws:
    
    java.io.IOException - if unable to load relativePath
    
    Since:
    
    2.0
  - applyNextHandler
```
public void applyNextHandler(FaceletContext ctx,
                             UIComponent c)
                      throws java.io.IOException,
                             FacesException,
                             ELException
```
    Invoke the apply() method on this instance's TagHandler.nextHandler.
    
    Parameters:
    
    ctx - the FaceletContext for this view execution
    
    c - the UIComponent of the component represented by this element instance.
    
    Throws:
    
    java.io.IOException - if thrown by the next FaceletHandler
    
    FaceletException - if thrown by the next FaceletHandler
    
    FacesException - if thrown by the next FaceletHandler
    
    ELException - if thrown by the next FaceletHandler
    
    Since:
    
    2.0
  - createMetaRuleset
```
protected MetaRuleset createMetaRuleset(java.lang.Class type)
```
    The default implementation simply calls through to TagHandlerDelegate.createMetaRuleset(java.lang.Class) and returns the result.
    
    Specified by:
    
    createMetaRuleset in class MetaTagHandler
    
    Parameters:
    
    type - the Class for which the MetaRuleset must be created.
    
    Returns:
    
    the MetaRuleset.
    
    Since:
    
    2.0

Class DelegatingMetaTagHandler

Field Summary

Fields inherited from class jakarta.faces.view.facelets.TagHandler

Constructor Summary

Method Summary

Methods inherited from class jakarta.faces.view.facelets.TagHandler

Methods inherited from class java.lang.Object

Field Detail

delegateFactory

Constructor Detail

DelegatingMetaTagHandler

Method Detail

getTagHandlerDelegate

isDisabled

getBinding

getTag

getTagId

getTagAttribute

setAttributes

apply

applyNextHandler

createMetaRuleset