javax.security.auth.callback

Class ChoiceCallback

  1. java.lang.Object
  2. extended byjavax.security.auth.callback.ChoiceCallback
All implemented interfaces:
java.io.Serializable, Callback

  1. public class ChoiceCallback
  2. extends java.lang.Object
  3. implements Callback, java.io.Serializable

Underlying security services instantiate and pass a ChoiceCallback to the handle method of a CallbackHandler to display a list of choices and to retrieve the selected choice(s).

See Also:
CallbackHandler, Serialized Form

Constructor Summary

Constructor and Description
ChoiceCallback(java.lang.String prompt,java.lang.String[] choices,int defaultChoice,boolean multipleSelectionsAllowed)
Construct a ChoiceCallback with a prompt, a list of choices, a default choice, and a boolean specifying whether or not multiple selections from the list of choices are allowed.

Method Summary

Modifier and Type Method and Description
  1. boolean
allowMultipleSelections()
Get the boolean determining whether multiple selections from the choices list are allowed.
  1. java.lang.String[]
getChoices()
Get the list of choices.
  1. int
getDefaultChoice()
Get the defaultChoice.
  1. java.lang.String
getPrompt()
Get the prompt.
  1. int[]
getSelectedIndexes()
Get the selected choices.
  1. void
setSelectedIndex(int selection)
Set the selected choice.
  1. void
setSelectedIndexes(int[] selections)
Set the selected choices.
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ChoiceCallback

  1. public ChoiceCallback(java.lang.String prompt,
  2. java.lang.String[] choices,
  3. int defaultChoice,
  4. boolean multipleSelectionsAllowed)
Construct a ChoiceCallback with a prompt, a list of choices, a default choice, and a boolean specifying whether or not multiple selections from the list of choices are allowed.

Parameters:
prompt - the prompt used to describe the list of choices.

choices - the list of choices.

defaultChoice - the choice to be used as the default choice when the list of choices are displayed. This value is represented as an index into the choices array.

multipleSelectionsAllowed - boolean specifying whether or not multiple selections can be made from the list of choices.
Throws:
java.lang.IllegalArgumentException - if prompt is null, if prompt has a length of 0, if choices is null, if choices has a length of 0, if any element from choices is null, if any element from choices has a length of 0 or if defaultChoice does not fall within the array boundaries of choices.

Method Detail

getPrompt

  1. public java.lang.String getPrompt( )
Get the prompt.

Returns:
the prompt.

getChoices

  1. public java.lang.String[] getChoices( )
Get the list of choices.

Returns:
the list of choices.

getDefaultChoice

  1. public int getDefaultChoice()
Get the defaultChoice.

Returns:
the defaultChoice, represented as an index into the choices list.

allowMultipleSelections

  1. public boolean allowMultipleSelections( )
Get the boolean determining whether multiple selections from the choices list are allowed.

Returns:
whether multiple selections are allowed.

setSelectedIndex

  1. public void setSelectedIndex(int selection)
Set the selected choice.

Parameters:
selection - the selection represented as an index into the choices list.
See Also:

setSelectedIndexes

  1. public void setSelectedIndexes( int[] selections)
Set the selected choices.

Parameters:
selections - the selections represented as indexes into the choices list.
Throws:
java.lang.UnsupportedOperationException - if multiple selections are not allowed, as determined by allowMultipleSelections.
See Also:

getSelectedIndexes

  1. public int[] getSelectedIndexes( )
Get the selected choices.

Returns:
the selected choices, represented as indexes into the choices list.
See Also: