Class Hidden

  • All Implemented Interfaces:

    public class Hidden
    extends java.lang.Object
    implements ClientElement
    Used to record a page property as a value into the form. The value is encoded when the form is rendered, then decoded after the form is submitted back to the server, and the "value" parameter updated. The encoding and decoding is done via a ValueEncoder, therefore you must either bind the "encoder" parameter to a ValueEncoder or use an entity type for the "value" parameter for which Tapestry can provide a ValueEncoder automatically.
    Component Parameters 
    NameTypeFlagsDefaultDefault Prefix
    encoderorg.apache.tapestry5.ValueEncoderRequired prop
    A ValueEncoder used to convert the server-side object provided by the "value" parameter into a unique client-side string (typically an ID) and back. Note: this parameter may be OMITTED if Tapestry is configured to provide a ValueEncoder automatically for the type of property bound to the "value" parameter.
    nullsorg.apache.tapestry5.NullFieldStrategy defaultnullfieldstrategy
    Defines how nulls on the server side, or sent from the client side, are treated. The selected strategy may replace the nulls with some other value. The default strategy leaves nulls alone. Another built-in strategy, zero, replaces nulls with the value 0.
    valueObjectRequired prop
    The value to read (when rendering) or update (when the form is submitted).
    • Constructor Summary

      Constructor Description
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.String getClientId()  
      java.lang.String getControlName()  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

    • Method Detail

      • getClientId

        public java.lang.String getClientId()
        Specified by:
        getClientId in interface ClientElement
        a unique id for the element. This value will be unique for any given rendering of a page. This value is intended for use as the id attribute of the client-side element, and will be used with any DHTML/Ajax related JavaScript.