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502 lines
17 KiB
502 lines
17 KiB
/*
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* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package javax.security.auth.callback;
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/**
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* <p> Underlying security services instantiate and pass a
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* {@code ConfirmationCallback} to the {@code handle}
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* method of a {@code CallbackHandler} to ask for YES/NO,
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* OK/CANCEL, YES/NO/CANCEL or other similar confirmations.
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*
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* @see javax.security.auth.callback.CallbackHandler
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*/
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public class ConfirmationCallback implements Callback, java.io.Serializable {
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private static final long serialVersionUID = -9095656433782481624L;
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/**
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* Unspecified option type.
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*
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* <p> The {@code getOptionType} method returns this
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* value if this {@code ConfirmationCallback} was instantiated
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* with {@code options} instead of an {@code optionType}.
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*/
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public static final int UNSPECIFIED_OPTION = -1;
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/**
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* YES/NO confirmation option.
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*
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* <p> An underlying security service specifies this as the
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* {@code optionType} to a {@code ConfirmationCallback}
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* constructor if it requires a confirmation which can be answered
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* with either {@code YES} or {@code NO}.
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*/
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public static final int YES_NO_OPTION = 0;
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/**
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* YES/NO/CANCEL confirmation confirmation option.
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*
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* <p> An underlying security service specifies this as the
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* {@code optionType} to a {@code ConfirmationCallback}
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* constructor if it requires a confirmation which can be answered
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* with either {@code YES}, {@code NO} or {@code CANCEL}.
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*/
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public static final int YES_NO_CANCEL_OPTION = 1;
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/**
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* OK/CANCEL confirmation confirmation option.
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*
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* <p> An underlying security service specifies this as the
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* {@code optionType} to a {@code ConfirmationCallback}
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* constructor if it requires a confirmation which can be answered
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* with either {@code OK} or {@code CANCEL}.
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*/
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public static final int OK_CANCEL_OPTION = 2;
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/**
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* YES option.
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*
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* <p> If an {@code optionType} was specified to this
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* {@code ConfirmationCallback}, this option may be specified as a
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* {@code defaultOption} or returned as the selected index.
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*/
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public static final int YES = 0;
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/**
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* NO option.
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*
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* <p> If an {@code optionType} was specified to this
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* {@code ConfirmationCallback}, this option may be specified as a
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* {@code defaultOption} or returned as the selected index.
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*/
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public static final int NO = 1;
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/**
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* CANCEL option.
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*
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* <p> If an {@code optionType} was specified to this
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* {@code ConfirmationCallback}, this option may be specified as a
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* {@code defaultOption} or returned as the selected index.
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*/
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public static final int CANCEL = 2;
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/**
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* OK option.
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*
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* <p> If an {@code optionType} was specified to this
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* {@code ConfirmationCallback}, this option may be specified as a
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* {@code defaultOption} or returned as the selected index.
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*/
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public static final int OK = 3;
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/** INFORMATION message type. */
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public static final int INFORMATION = 0;
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/** WARNING message type. */
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public static final int WARNING = 1;
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/** ERROR message type. */
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public static final int ERROR = 2;
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/**
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* @serial
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* @since 1.4
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*/
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private String prompt;
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/**
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* @serial
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* @since 1.4
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*/
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private int messageType;
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/**
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* @serial
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* @since 1.4
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*/
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private int optionType = UNSPECIFIED_OPTION;
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/**
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* @serial
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* @since 1.4
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*/
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private int defaultOption;
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/**
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* @serial
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* @since 1.4
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*/
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private String[] options;
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/**
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* @serial
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* @since 1.4
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*/
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private int selection;
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/**
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* Construct a {@code ConfirmationCallback} with a
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* message type, an option type and a default option.
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*
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* <p> Underlying security services use this constructor if
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* they require either a YES/NO, YES/NO/CANCEL or OK/CANCEL
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* confirmation.
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*
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* <p>
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*
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* @param messageType the message type ({@code INFORMATION},
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* {@code WARNING} or {@code ERROR}). <p>
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*
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* @param optionType the option type ({@code YES_NO_OPTION},
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* {@code YES_NO_CANCEL_OPTION} or
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* {@code OK_CANCEL_OPTION}). <p>
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*
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* @param defaultOption the default option
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* from the provided optionType ({@code YES},
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* {@code NO}, {@code CANCEL} or
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* {@code OK}).
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*
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* @exception IllegalArgumentException if messageType is not either
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* {@code INFORMATION}, {@code WARNING},
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* or {@code ERROR}, if optionType is not either
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* {@code YES_NO_OPTION},
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* {@code YES_NO_CANCEL_OPTION}, or
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* {@code OK_CANCEL_OPTION},
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* or if {@code defaultOption}
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* does not correspond to one of the options in
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* {@code optionType}.
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*/
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public ConfirmationCallback(int messageType,
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int optionType, int defaultOption) {
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if (messageType < INFORMATION || messageType > ERROR ||
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optionType < YES_NO_OPTION || optionType > OK_CANCEL_OPTION)
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throw new IllegalArgumentException();
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switch (optionType) {
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case YES_NO_OPTION:
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if (defaultOption != YES && defaultOption != NO)
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throw new IllegalArgumentException();
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break;
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case YES_NO_CANCEL_OPTION:
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if (defaultOption != YES && defaultOption != NO &&
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defaultOption != CANCEL)
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throw new IllegalArgumentException();
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break;
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case OK_CANCEL_OPTION:
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if (defaultOption != OK && defaultOption != CANCEL)
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throw new IllegalArgumentException();
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break;
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}
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this.messageType = messageType;
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this.optionType = optionType;
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this.defaultOption = defaultOption;
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}
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/**
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* Construct a {@code ConfirmationCallback} with a
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* message type, a list of options and a default option.
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*
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* <p> Underlying security services use this constructor if
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* they require a confirmation different from the available preset
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* confirmations provided (for example, CONTINUE/ABORT or STOP/GO).
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* The confirmation options are listed in the {@code options} array,
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* and are displayed by the {@code CallbackHandler} implementation
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* in a manner consistent with the way preset options are displayed.
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*
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* <p>
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*
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* @param messageType the message type ({@code INFORMATION},
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* {@code WARNING} or {@code ERROR}). <p>
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*
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* @param options the list of confirmation options. <p>
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*
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* @param defaultOption the default option, represented as an index
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* into the {@code options} array.
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*
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* @exception IllegalArgumentException if messageType is not either
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* {@code INFORMATION}, {@code WARNING},
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* or {@code ERROR}, if {@code options} is null,
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* if {@code options} has a length of 0,
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* if any element from {@code options} is null,
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* if any element from {@code options}
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* has a length of 0, or if {@code defaultOption}
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* does not lie within the array boundaries of
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* {@code options}.
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*/
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public ConfirmationCallback(int messageType,
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String[] options, int defaultOption) {
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if (messageType < INFORMATION || messageType > ERROR ||
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options == null || options.length == 0 ||
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defaultOption < 0 || defaultOption >= options.length)
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throw new IllegalArgumentException();
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for (int i = 0; i < options.length; i++) {
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if (options[i] == null || options[i].length() == 0)
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throw new IllegalArgumentException();
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}
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this.messageType = messageType;
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this.options = options;
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this.defaultOption = defaultOption;
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}
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/**
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* Construct a {@code ConfirmationCallback} with a prompt,
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* message type, an option type and a default option.
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*
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* <p> Underlying security services use this constructor if
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* they require either a YES/NO, YES/NO/CANCEL or OK/CANCEL
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* confirmation.
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*
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* <p>
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*
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* @param prompt the prompt used to describe the list of options. <p>
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*
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* @param messageType the message type ({@code INFORMATION},
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* {@code WARNING} or {@code ERROR}). <p>
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*
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* @param optionType the option type ({@code YES_NO_OPTION},
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* {@code YES_NO_CANCEL_OPTION} or
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* {@code OK_CANCEL_OPTION}). <p>
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*
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* @param defaultOption the default option
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* from the provided optionType ({@code YES},
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* {@code NO}, {@code CANCEL} or
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* {@code OK}).
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*
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* @exception IllegalArgumentException if {@code prompt} is null,
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* if {@code prompt} has a length of 0,
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* if messageType is not either
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* {@code INFORMATION}, {@code WARNING},
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* or {@code ERROR}, if optionType is not either
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* {@code YES_NO_OPTION},
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* {@code YES_NO_CANCEL_OPTION}, or
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* {@code OK_CANCEL_OPTION},
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* or if {@code defaultOption}
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* does not correspond to one of the options in
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* {@code optionType}.
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*/
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public ConfirmationCallback(String prompt, int messageType,
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int optionType, int defaultOption) {
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if (prompt == null || prompt.length() == 0 ||
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messageType < INFORMATION || messageType > ERROR ||
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optionType < YES_NO_OPTION || optionType > OK_CANCEL_OPTION)
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throw new IllegalArgumentException();
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switch (optionType) {
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case YES_NO_OPTION:
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if (defaultOption != YES && defaultOption != NO)
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throw new IllegalArgumentException();
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break;
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case YES_NO_CANCEL_OPTION:
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if (defaultOption != YES && defaultOption != NO &&
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defaultOption != CANCEL)
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throw new IllegalArgumentException();
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break;
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case OK_CANCEL_OPTION:
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if (defaultOption != OK && defaultOption != CANCEL)
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throw new IllegalArgumentException();
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break;
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}
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this.prompt = prompt;
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this.messageType = messageType;
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this.optionType = optionType;
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this.defaultOption = defaultOption;
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}
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/**
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* Construct a {@code ConfirmationCallback} with a prompt,
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* message type, a list of options and a default option.
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*
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* <p> Underlying security services use this constructor if
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* they require a confirmation different from the available preset
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* confirmations provided (for example, CONTINUE/ABORT or STOP/GO).
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* The confirmation options are listed in the {@code options} array,
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* and are displayed by the {@code CallbackHandler} implementation
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* in a manner consistent with the way preset options are displayed.
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*
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* <p>
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*
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* @param prompt the prompt used to describe the list of options. <p>
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*
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* @param messageType the message type ({@code INFORMATION},
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* {@code WARNING} or {@code ERROR}). <p>
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*
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* @param options the list of confirmation options. <p>
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*
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* @param defaultOption the default option, represented as an index
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* into the {@code options} array.
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*
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* @exception IllegalArgumentException if {@code prompt} is null,
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* if {@code prompt} has a length of 0,
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* if messageType is not either
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* {@code INFORMATION}, {@code WARNING},
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* or {@code ERROR}, if {@code options} is null,
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* if {@code options} has a length of 0,
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* if any element from {@code options} is null,
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* if any element from {@code options}
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* has a length of 0, or if {@code defaultOption}
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* does not lie within the array boundaries of
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* {@code options}.
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*/
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public ConfirmationCallback(String prompt, int messageType,
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String[] options, int defaultOption) {
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if (prompt == null || prompt.length() == 0 ||
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messageType < INFORMATION || messageType > ERROR ||
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options == null || options.length == 0 ||
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defaultOption < 0 || defaultOption >= options.length)
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throw new IllegalArgumentException();
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for (int i = 0; i < options.length; i++) {
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if (options[i] == null || options[i].length() == 0)
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throw new IllegalArgumentException();
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}
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this.prompt = prompt;
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this.messageType = messageType;
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this.options = options;
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this.defaultOption = defaultOption;
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}
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/**
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* Get the prompt.
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*
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* <p>
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*
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* @return the prompt, or null if this {@code ConfirmationCallback}
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* was instantiated without a {@code prompt}.
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*/
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public String getPrompt() {
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return prompt;
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}
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/**
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* Get the message type.
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*
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* <p>
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*
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* @return the message type ({@code INFORMATION},
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* {@code WARNING} or {@code ERROR}).
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*/
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public int getMessageType() {
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return messageType;
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}
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/**
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* Get the option type.
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*
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* <p> If this method returns {@code UNSPECIFIED_OPTION}, then this
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* {@code ConfirmationCallback} was instantiated with
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* {@code options} instead of an {@code optionType}.
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* In this case, invoke the {@code getOptions} method
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* to determine which confirmation options to display.
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*
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* <p>
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*
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* @return the option type ({@code YES_NO_OPTION},
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* {@code YES_NO_CANCEL_OPTION} or
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* {@code OK_CANCEL_OPTION}), or
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* {@code UNSPECIFIED_OPTION} if this
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* {@code ConfirmationCallback} was instantiated with
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* {@code options} instead of an {@code optionType}.
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*/
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public int getOptionType() {
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return optionType;
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}
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/**
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* Get the confirmation options.
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*
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* <p>
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*
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* @return the list of confirmation options, or null if this
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* {@code ConfirmationCallback} was instantiated with
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* an {@code optionType} instead of {@code options}.
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*/
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public String[] getOptions() {
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return options;
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}
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/**
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* Get the default option.
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*
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* <p>
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*
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* @return the default option, represented as
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* {@code YES}, {@code NO}, {@code OK} or
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* {@code CANCEL} if an {@code optionType}
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* was specified to the constructor of this
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* {@code ConfirmationCallback}.
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* Otherwise, this method returns the default option as
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* an index into the
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* {@code options} array specified to the constructor
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* of this {@code ConfirmationCallback}.
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*/
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public int getDefaultOption() {
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return defaultOption;
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}
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/**
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* Set the selected confirmation option.
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*
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* <p>
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*
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* @param selection the selection represented as {@code YES},
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* {@code NO}, {@code OK} or {@code CANCEL}
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* if an {@code optionType} was specified to the constructor
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* of this {@code ConfirmationCallback}.
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* Otherwise, the selection represents the index into the
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* {@code options} array specified to the constructor
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* of this {@code ConfirmationCallback}.
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*
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* @see #getSelectedIndex
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*/
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public void setSelectedIndex(int selection) {
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this.selection = selection;
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}
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/**
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* Get the selected confirmation option.
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*
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* <p>
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*
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* @return the selected confirmation option represented as
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* {@code YES}, {@code NO}, {@code OK} or
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* {@code CANCEL} if an {@code optionType}
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* was specified to the constructor of this
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* {@code ConfirmationCallback}.
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* Otherwise, this method returns the selected confirmation
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* option as an index into the
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* {@code options} array specified to the constructor
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* of this {@code ConfirmationCallback}.
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*
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* @see #setSelectedIndex
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*/
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public int getSelectedIndex() {
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return selection;
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}
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}
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