TagHandler

java.lang.Object
- javax.faces.view.facelets.TagHandler

All Implemented Interfaces:

FaceletHandler

Direct Known Subclasses:

MetaTagHandler
```
public abstract class TagHandler
extends java.lang.Object
implements FaceletHandler
```
Foundation class for FaceletHandlers associated with a markup element in a Facelet document. This class introduces the concept of XML attributes to Facelets. See the constructor documentation for more details.

Since:

2.0

Field Summary

Fields
Modifier and Type	Field and Description
`protected FaceletHandler`	`nextHandler` A reference to the `FaceletHandler` that represents the first nested child of this `TagHandler` instance.
`protected Tag`	`tag` A reference to the `Tag` instance corresponding to this `TagHandler` instance.
`protected java.lang.String`	`tagId` See `TagConfig.getTagId()`.

Constructor Summary

Constructors
Constructor and Description

TagHandler(TagConfig config)
Every TagHandler instance is associated with a Tag.

Constructors
Constructor and Description
`TagHandler(TagConfig config)` Every `TagHandler` instance is associated with a `Tag`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected TagAttribute`	`getAttribute(java.lang.String localName)` Utility method for fetching the appropriate TagAttribute
`protected TagAttribute`	`getRequiredAttribute(java.lang.String localName)` Utility method for fetching a required TagAttribute
`java.lang.String`	`toString()`

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

Methods inherited from interface javax.faces.view.facelets.FaceletHandler
apply

- Field Detail
  - tagId
```
protected final java.lang.String tagId
```
    See TagConfig.getTagId().
  - tag
```
protected final Tag tag
```
    A reference to the Tag instance corresponding to this TagHandler instance.
  - nextHandler
```
protected final FaceletHandler nextHandler
```
    A reference to the FaceletHandler that represents the first nested child of this TagHandler instance.
- Constructor Detail
  - TagHandler
```
public TagHandler(TagConfig config)
```
    Every TagHandler instance is associated with a Tag. Each Tag instance has a TagAttributes property, which is simply a collection of TagAttribute instances. Extract and save as protected instance variables the TagConfig.getTagId(), TagConfig.getTag() and TagConfig.getNextHandler() returns from the argument TagConfig. This constructor is only called when the Facelets View is compiled.
    
    Parameters:
    
    config - The structure that contains useful to the operation of this instance.
- Method Detail
  - getAttribute
```
protected final TagAttribute getAttribute(java.lang.String localName)
```
    Utility method for fetching the appropriate TagAttribute
    
    Parameters:
    
    localName - name of attribute
    
    Returns:
    
    TagAttribute if found, otherwise null
  - getRequiredAttribute
```
protected final TagAttribute getRequiredAttribute(java.lang.String localName)
                                           throws TagException
```
    Utility method for fetching a required TagAttribute
    
    Parameters:
    
    localName - name of the attribute
    
    Returns:
    
    TagAttribute if found, otherwise error
    
    Throws:
    
    TagException - if the attribute was not found
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object

Class TagHandler

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface javax.faces.view.facelets.FaceletHandler

Field Detail

tagId

tag

nextHandler

Constructor Detail

TagHandler

Method Detail

getAttribute

getRequiredAttribute

toString