javax.faces.view.facelets

Class TagHandler

Contents
  • All Implemented Interfaces:
    FaceletHandler
    Direct Known Subclasses:
    MetaTagHandler

    public abstract class TagHandler
extends 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 Detail

      • 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(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(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

Document created the 11/06/2005, last modified the 18/08/2025
Source of the printed document:https://www.gaudry.be/en/java-api-javaee-rf-javax/faces/view/facelets/taghandler.html

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