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package javax.security.auth.callback;


 Underlying security services instantiate and pass a ConfirmationCallback to the handle method of a CallbackHandler to ask for YES/NO, OK/CANCEL, YES/NO/CANCEL or other similar confirmations. 
See Also:
Since:1.4
/**
 * <p> Underlying security services instantiate and pass a
 * {@code ConfirmationCallback} to the {@code handle}
 * method of a {@code CallbackHandler} to ask for YES/NO,
 * OK/CANCEL, YES/NO/CANCEL or other similar confirmations.
 *
 * @since 1.4
 * @see javax.security.auth.callback.CallbackHandler
 */
public class ConfirmationCallback implements Callback, java.io.Serializable {

    @java.io.Serial
    private static final long serialVersionUID = -9095656433782481624L;

    
Unspecified option type.

 The getOptionType method returns this value if this ConfirmationCallback was instantiated with options instead of an optionType. 
/**
     * Unspecified option type.
     *
     * <p> The {@code getOptionType} method returns this
     * value if this {@code ConfirmationCallback} was instantiated
     * with {@code options} instead of an {@code optionType}.
     */
    public static final int UNSPECIFIED_OPTION          = -1;

    
YES/NO confirmation option.

 An underlying security service specifies this as the optionType to a ConfirmationCallback constructor if it requires a confirmation which can be answered with either YES or NO. 
/**
     * YES/NO confirmation option.
     *
     * <p> An underlying security service specifies this as the
     * {@code optionType} to a {@code ConfirmationCallback}
     * constructor if it requires a confirmation which can be answered
     * with either {@code YES} or {@code NO}.
     */
    public static final int YES_NO_OPTION               = 0;

    
YES/NO/CANCEL confirmation option.

 An underlying security service specifies this as the optionType to a ConfirmationCallback constructor if it requires a confirmation which can be answered with either YES, NO or CANCEL. 
/**
     * YES/NO/CANCEL confirmation option.
     *
     * <p> An underlying security service specifies this as the
     * {@code optionType} to a {@code ConfirmationCallback}
     * constructor if it requires a confirmation which can be answered
     * with either {@code YES}, {@code NO} or {@code CANCEL}.
     */
    public static final int YES_NO_CANCEL_OPTION        = 1;

    
OK/CANCEL confirmation option.

 An underlying security service specifies this as the optionType to a ConfirmationCallback constructor if it requires a confirmation which can be answered with either OK or CANCEL. 
/**
     * OK/CANCEL confirmation option.
     *
     * <p> An underlying security service specifies this as the
     * {@code optionType} to a {@code ConfirmationCallback}
     * constructor if it requires a confirmation which can be answered
     * with either {@code OK} or {@code CANCEL}.
     */
    public static final int OK_CANCEL_OPTION            = 2;

    
YES option.

 If an optionType was specified to this ConfirmationCallback, this option may be specified as a defaultOption or returned as the selected index. 
/**
     * YES option.
     *
     * <p> If an {@code optionType} was specified to this
     * {@code ConfirmationCallback}, this option may be specified as a
     * {@code defaultOption} or returned as the selected index.
     */
    public static final int YES                         = 0;

    
NO option.

 If an optionType was specified to this ConfirmationCallback, this option may be specified as a defaultOption or returned as the selected index. 
/**
     * NO option.
     *
     * <p> If an {@code optionType} was specified to this
     * {@code ConfirmationCallback}, this option may be specified as a
     * {@code defaultOption} or returned as the selected index.
     */
    public static final int NO                          = 1;

    
CANCEL option.

 If an optionType was specified to this ConfirmationCallback, this option may be specified as a defaultOption or returned as the selected index. 
/**
     * CANCEL option.
     *
     * <p> If an {@code optionType} was specified to this
     * {@code ConfirmationCallback}, this option may be specified as a
     * {@code defaultOption} or returned as the selected index.
     */
    public static final int CANCEL                      = 2;

    
OK option.

 If an optionType was specified to this ConfirmationCallback, this option may be specified as a defaultOption or returned as the selected index. 
/**
     * OK option.
     *
     * <p> If an {@code optionType} was specified to this
     * {@code ConfirmationCallback}, this option may be specified as a
     * {@code defaultOption} or returned as the selected index.
     */
    public static final int OK                          = 3;

    
INFORMATION message type.  
/** INFORMATION message type.  */
    public static final int INFORMATION                 = 0;

    
WARNING message type. 
/** WARNING message type. */
    public static final int WARNING                     = 1;

    
ERROR message type. 
/** ERROR message type. */
    public static final int ERROR                       = 2;

    
@serial
Since:1.4
/**
     * @serial
     * @since 1.4
     */
    private final String prompt;
    
@serial
Since:1.4
/**
     * @serial
     * @since 1.4
     */
    private final int messageType;
    
@serial
Since:1.4
/**
     * @serial
     * @since 1.4
     */
    private final int optionType;
    
@serial
Since:1.4
/**
     * @serial
     * @since 1.4
     */
    private final int defaultOption;
    
@serial
Since:1.4
/**
     * @serial
     * @since 1.4
     */
    private final String[] options;
    
@serial
Since:1.4
/**
     * @serial
     * @since 1.4
     */
    private int selection;

    
Construct a ConfirmationCallback with a message type, an option type and a default option. 
 Underlying security services use this constructor if
they require either a YES/NO, YES/NO/CANCEL or OK/CANCEL
confirmation.

Params:
  • messageType – the message type (INFORMATION, WARNING or ERROR).
  • optionType – the option type (YES_NO_OPTION, YES_NO_CANCEL_OPTION or OK_CANCEL_OPTION).
  • defaultOption – the default option from the provided optionType (YES, NO, CANCEL or OK).
Throws:
  • IllegalArgumentException – if messageType is not either INFORMATION, WARNING, or ERROR, if optionType is not either YES_NO_OPTION, YES_NO_CANCEL_OPTION, or OK_CANCEL_OPTION, or if defaultOption does not correspond to one of the options in optionType.
/**
     * Construct a {@code ConfirmationCallback} with a
     * message type, an option type and a default option.
     *
     * <p> Underlying security services use this constructor if
     * they require either a YES/NO, YES/NO/CANCEL or OK/CANCEL
     * confirmation.
     *
     * @param messageType the message type ({@code INFORMATION},
     *                  {@code WARNING} or {@code ERROR}).
     *
     * @param optionType the option type ({@code YES_NO_OPTION},
     *                  {@code YES_NO_CANCEL_OPTION} or
     *                  {@code OK_CANCEL_OPTION}).
     *
     * @param defaultOption the default option
     *                  from the provided optionType ({@code YES},
     *                  {@code NO}, {@code CANCEL} or
     *                  {@code OK}).
     *
     * @exception IllegalArgumentException if messageType is not either
     *                  {@code INFORMATION}, {@code WARNING},
     *                  or {@code ERROR}, if optionType is not either
     *                  {@code YES_NO_OPTION},
     *                  {@code YES_NO_CANCEL_OPTION}, or
     *                  {@code OK_CANCEL_OPTION},
     *                  or if {@code defaultOption}
     *                  does not correspond to one of the options in
     *                  {@code optionType}.
     */
    public ConfirmationCallback(int messageType,
                int optionType, int defaultOption) {

        if (messageType < INFORMATION || messageType > ERROR ||
            optionType < YES_NO_OPTION || optionType > OK_CANCEL_OPTION)
            throw new IllegalArgumentException();

        switch (optionType) {
        case YES_NO_OPTION:
            if (defaultOption != YES && defaultOption != NO)
                throw new IllegalArgumentException();
            break;
        case YES_NO_CANCEL_OPTION:
            if (defaultOption != YES && defaultOption != NO &&
                defaultOption != CANCEL)
                throw new IllegalArgumentException();
            break;
        case OK_CANCEL_OPTION:
            if (defaultOption != OK && defaultOption != CANCEL)
                throw new IllegalArgumentException();
            break;
        }

        this.prompt = null;
        this.messageType = messageType;
        this.optionType = optionType;
        this.options = null;
        this.defaultOption = defaultOption;
    }

    
Construct a ConfirmationCallback with a message type, a list of options and a default option. 
 Underlying security services use this constructor if they require a confirmation different from the available preset confirmations provided (for example, CONTINUE/ABORT or STOP/GO). The confirmation options are listed in the options array, and are displayed by the CallbackHandler implementation in a manner consistent with the way preset options are displayed. 
Params:
  • messageType – the message type (INFORMATION, WARNING or ERROR).
  • options – the list of confirmation options. The array is cloned
                 to protect against subsequent modification.
  • defaultOption – the default option, represented as an index into the options array.
Throws:
  • IllegalArgumentException – if messageType is not either INFORMATION, WARNING, or ERROR, if options is null, if options has a length of 0, if any element from options is null, if any element from options has a length of 0, or if defaultOption does not lie within the array boundaries of options.
/**
     * Construct a {@code ConfirmationCallback} with a
     * message type, a list of options and a default option.
     *
     * <p> Underlying security services use this constructor if
     * they require a confirmation different from the available preset
     * confirmations provided (for example, CONTINUE/ABORT or STOP/GO).
     * The confirmation options are listed in the {@code options} array,
     * and are displayed by the {@code CallbackHandler} implementation
     * in a manner consistent with the way preset options are displayed.
     *
     * @param messageType the message type ({@code INFORMATION},
     *                  {@code WARNING} or {@code ERROR}).
     *
     * @param options the list of confirmation options. The array is cloned
     *                  to protect against subsequent modification.
     *
     * @param defaultOption the default option, represented as an index
     *                  into the {@code options} array.
     *
     * @exception IllegalArgumentException if messageType is not either
     *                  {@code INFORMATION}, {@code WARNING},
     *                  or {@code ERROR}, if {@code options} is null,
     *                  if {@code options} has a length of 0,
     *                  if any element from {@code options} is null,
     *                  if any element from {@code options}
     *                  has a length of 0, or if {@code defaultOption}
     *                  does not lie within the array boundaries of
     *                  {@code options}.
     */
    public ConfirmationCallback(int messageType,
                String[] options, int defaultOption) {

        if (messageType < INFORMATION || messageType > ERROR ||
            options == null || options.length == 0 ||
            defaultOption < 0 || defaultOption >= options.length)
            throw new IllegalArgumentException();

        for (int i = 0; i < options.length; i++) {
            if (options[i] == null || options[i].isEmpty())
                throw new IllegalArgumentException();
        }

        this.prompt = null;
        this.messageType = messageType;
        this.optionType = UNSPECIFIED_OPTION;
        this.options = options.clone();
        this.defaultOption = defaultOption;
    }

    
Construct a ConfirmationCallback with a prompt, message type, an option type and a default option. 
 Underlying security services use this constructor if
they require either a YES/NO, YES/NO/CANCEL or OK/CANCEL
confirmation.

Params:
  • prompt – the prompt used to describe the list of options.
  • messageType – the message type (INFORMATION, WARNING or ERROR).
  • optionType – the option type (YES_NO_OPTION, YES_NO_CANCEL_OPTION or OK_CANCEL_OPTION).
  • defaultOption – the default option from the provided optionType (YES, NO, CANCEL or OK).
Throws:
  • IllegalArgumentException – if prompt is null, if prompt has a length of 0, if messageType is not either INFORMATION, WARNING, or ERROR, if optionType is not either YES_NO_OPTION, YES_NO_CANCEL_OPTION, or OK_CANCEL_OPTION, or if defaultOption does not correspond to one of the options in optionType.
/**
     * Construct a {@code ConfirmationCallback} with a prompt,
     * message type, an option type and a default option.
     *
     * <p> Underlying security services use this constructor if
     * they require either a YES/NO, YES/NO/CANCEL or OK/CANCEL
     * confirmation.
     *
     * @param prompt the prompt used to describe the list of options.
     *
     * @param messageType the message type ({@code INFORMATION},
     *                  {@code WARNING} or {@code ERROR}).
     *
     * @param optionType the option type ({@code YES_NO_OPTION},
     *                  {@code YES_NO_CANCEL_OPTION} or
     *                  {@code OK_CANCEL_OPTION}).
     *
     * @param defaultOption the default option
     *                  from the provided optionType ({@code YES},
     *                  {@code NO}, {@code CANCEL} or
     *                  {@code OK}).
     *
     * @exception IllegalArgumentException if {@code prompt} is null,
     *                  if {@code prompt} has a length of 0,
     *                  if messageType is not either
     *                  {@code INFORMATION}, {@code WARNING},
     *                  or {@code ERROR}, if optionType is not either
     *                  {@code YES_NO_OPTION},
     *                  {@code YES_NO_CANCEL_OPTION}, or
     *                  {@code OK_CANCEL_OPTION},
     *                  or if {@code defaultOption}
     *                  does not correspond to one of the options in
     *                  {@code optionType}.
     */
    public ConfirmationCallback(String prompt, int messageType,
                int optionType, int defaultOption) {

        if (prompt == null || prompt.isEmpty() ||
            messageType < INFORMATION || messageType > ERROR ||
            optionType < YES_NO_OPTION || optionType > OK_CANCEL_OPTION)
            throw new IllegalArgumentException();

        switch (optionType) {
        case YES_NO_OPTION:
            if (defaultOption != YES && defaultOption != NO)
                throw new IllegalArgumentException();
            break;
        case YES_NO_CANCEL_OPTION:
            if (defaultOption != YES && defaultOption != NO &&
                defaultOption != CANCEL)
                throw new IllegalArgumentException();
            break;
        case OK_CANCEL_OPTION:
            if (defaultOption != OK && defaultOption != CANCEL)
                throw new IllegalArgumentException();
            break;
        }

        this.prompt = prompt;
        this.messageType = messageType;
        this.optionType = optionType;
        this.options = null;
        this.defaultOption = defaultOption;
    }

    
Construct a ConfirmationCallback with a prompt, message type, a list of options and a default option. 
 Underlying security services use this constructor if they require a confirmation different from the available preset confirmations provided (for example, CONTINUE/ABORT or STOP/GO). The confirmation options are listed in the options array, and are displayed by the CallbackHandler implementation in a manner consistent with the way preset options are displayed. 
Params:
  • prompt – the prompt used to describe the list of options.
  • messageType – the message type (INFORMATION, WARNING or ERROR).
  • options – the list of confirmation options. The array is cloned
                 to protect against subsequent modification.
  • defaultOption – the default option, represented as an index into the options array.
Throws:
  • IllegalArgumentException – if prompt is null, if prompt has a length of 0, if messageType is not either INFORMATION, WARNING, or ERROR, if options is null, if options has a length of 0, if any element from options is null, if any element from options has a length of 0, or if defaultOption does not lie within the array boundaries of options.
/**
     * Construct a {@code ConfirmationCallback} with a prompt,
     * message type, a list of options and a default option.
     *
     * <p> Underlying security services use this constructor if
     * they require a confirmation different from the available preset
     * confirmations provided (for example, CONTINUE/ABORT or STOP/GO).
     * The confirmation options are listed in the {@code options} array,
     * and are displayed by the {@code CallbackHandler} implementation
     * in a manner consistent with the way preset options are displayed.
     *
     * @param prompt the prompt used to describe the list of options.
     *
     * @param messageType the message type ({@code INFORMATION},
     *                  {@code WARNING} or {@code ERROR}).
     *
     * @param options the list of confirmation options. The array is cloned
     *                  to protect against subsequent modification.
     *
     * @param defaultOption the default option, represented as an index
     *                  into the {@code options} array.
     *
     * @exception IllegalArgumentException if {@code prompt} is null,
     *                  if {@code prompt} has a length of 0,
     *                  if messageType is not either
     *                  {@code INFORMATION}, {@code WARNING},
     *                  or {@code ERROR}, if {@code options} is null,
     *                  if {@code options} has a length of 0,
     *                  if any element from {@code options} is null,
     *                  if any element from {@code options}
     *                  has a length of 0, or if {@code defaultOption}
     *                  does not lie within the array boundaries of
     *                  {@code options}.
     */
    public ConfirmationCallback(String prompt, int messageType,
                String[] options, int defaultOption) {

        if (prompt == null || prompt.isEmpty() ||
            messageType < INFORMATION || messageType > ERROR ||
            options == null || options.length == 0 ||
            defaultOption < 0 || defaultOption >= options.length)
            throw new IllegalArgumentException();

        for (int i = 0; i < options.length; i++) {
            if (options[i] == null || options[i].isEmpty())
                throw new IllegalArgumentException();
        }

        this.prompt = prompt;
        this.messageType = messageType;
        this.optionType = UNSPECIFIED_OPTION;
        this.options = options.clone();
        this.defaultOption = defaultOption;
    }

    
Get the prompt.

Returns:the prompt, or null if this ConfirmationCallback was instantiated without a prompt.
/**
     * Get the prompt.
     *
     * @return the prompt, or null if this {@code ConfirmationCallback}
     *          was instantiated without a {@code prompt}.
     */
    public String getPrompt() {
        return prompt;
    }

    
Get the message type.

Returns:the message type (INFORMATION, WARNING or ERROR).
/**
     * Get the message type.
     *
     * @return the message type ({@code INFORMATION},
     *          {@code WARNING} or {@code ERROR}).
     */
    public int getMessageType() {
        return messageType;
    }

    
Get the option type.

 If this method returns UNSPECIFIED_OPTION, then this ConfirmationCallback was instantiated with options instead of an optionType. In this case, invoke the getOptions method to determine which confirmation options to display. 
Returns:the option type (YES_NO_OPTION, YES_NO_CANCEL_OPTION or OK_CANCEL_OPTION), or UNSPECIFIED_OPTION if this ConfirmationCallback was instantiated with options instead of an optionType.
/**
     * Get the option type.
     *
     * <p> If this method returns {@code UNSPECIFIED_OPTION}, then this
     * {@code ConfirmationCallback} was instantiated with
     * {@code options} instead of an {@code optionType}.
     * In this case, invoke the {@code getOptions} method
     * to determine which confirmation options to display.
     *
     * @return the option type ({@code YES_NO_OPTION},
     *          {@code YES_NO_CANCEL_OPTION} or
     *          {@code OK_CANCEL_OPTION}), or
     *          {@code UNSPECIFIED_OPTION} if this
     *          {@code ConfirmationCallback} was instantiated with
     *          {@code options} instead of an {@code optionType}.
     */
    public int getOptionType() {
        return optionType;
    }

    
Get the confirmation options.

Returns:a copy of the list of confirmation options, or null if this ConfirmationCallback was instantiated with an optionType instead of options.
/**
     * Get the confirmation options.
     *
     * @return a copy of the list of confirmation options, or null if this
     *          {@code ConfirmationCallback} was instantiated with
     *          an {@code optionType} instead of {@code options}.
     */
    public String[] getOptions() {
        return options == null ? null : options.clone();
    }

    
Get the default option.

Returns:the default option, represented as YES, NO, OK or CANCEL if an optionType was specified to the constructor of this ConfirmationCallback. Otherwise, this method returns the default option as an index into the options array specified to the constructor of this ConfirmationCallback.
/**
     * Get the default option.
     *
     * @return the default option, represented as
     *          {@code YES}, {@code NO}, {@code OK} or
     *          {@code CANCEL} if an {@code optionType}
     *          was specified to the constructor of this
     *          {@code ConfirmationCallback}.
     *          Otherwise, this method returns the default option as
     *          an index into the
     *          {@code options} array specified to the constructor
     *          of this {@code ConfirmationCallback}.
     */
    public int getDefaultOption() {
        return defaultOption;
    }

    
Set the selected confirmation option.

Params:
  • selection – the selection represented as YES, NO, OK or CANCEL if an optionType was specified to the constructor of this ConfirmationCallback. Otherwise, the selection represents the index into the options array specified to the constructor of this ConfirmationCallback.
See Also:
/**
     * Set the selected confirmation option.
     *
     * @param selection the selection represented as {@code YES},
     *          {@code NO}, {@code OK} or {@code CANCEL}
     *          if an {@code optionType} was specified to the constructor
     *          of this {@code ConfirmationCallback}.
     *          Otherwise, the selection represents the index into the
     *          {@code options} array specified to the constructor
     *          of this {@code ConfirmationCallback}.
     *
     * @see #getSelectedIndex
     */
    public void setSelectedIndex(int selection) {
        this.selection = selection;
    }

    
Get the selected confirmation option.

See Also:
Returns:the selected confirmation option represented as YES, NO, OK or CANCEL if an optionType was specified to the constructor of this ConfirmationCallback. Otherwise, this method returns the selected confirmation option as an index into the options array specified to the constructor of this ConfirmationCallback.
/**
     * Get the selected confirmation option.
     *
     * @return the selected confirmation option represented as
     *          {@code YES}, {@code NO}, {@code OK} or
     *          {@code CANCEL} if an {@code optionType}
     *          was specified to the constructor of this
     *          {@code ConfirmationCallback}.
     *          Otherwise, this method returns the selected confirmation
     *          option as an index into the
     *          {@code options} array specified to the constructor
     *          of this {@code ConfirmationCallback}.
     *
     * @see #setSelectedIndex
     */
    public int getSelectedIndex() {
        return selection;
    }
}