TextStyle.java

/*
 * Copyright (c) 2007-present, Stephen Colebourne & Michael Nascimento Santos
 *
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 *    may be used to endorse or promote products derived from this software
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package org.threeten.bp.format;

/**
 * Enumeration of the style of text formatting and parsing.
 * <p>
 * Text styles define three sizes for the formatted text - 'full', 'short' and 'narrow'.
 * Each of these three sizes is available in both 'standard' and 'stand-alone' variations.
 * <p>
 * The difference between the three sizes is obvious in most languages.
 * For example, in English the 'full' month is 'January', the 'short' month is 'Jan'
 * and the 'narrow' month is 'J'. Note that the narrow size is often not unique.
 * For example, 'January', 'June' and 'July' all have the 'narrow' text 'J'.
 * <p>
 * The difference between the 'standard' and 'stand-alone' forms is trickier to describe
 * as there is no difference in English. However, in other languages there is a difference
 * in the word used when the text is used alone, as opposed to in a complete date.
 * For example, the word used for a month when used alone in a date picker is different
 * to the word used for month in association with a day and year in a date.
 *
 * <h3>Specification for implementors</h3>
 * This is immutable and thread-safe enum.
 */
public enum TextStyle {
    // ordered from large to small

    /**
     * Full text, typically the full description.
     * For example, day-of-week Monday might output "Monday".
     */
    FULL,
    /**
     * Full text for stand-alone use, typically the full description.
     * For example, day-of-week Monday might output "Monday".
     */
    FULL_STANDALONE,
    /**
     * Short text, typically an abbreviation.
     * For example, day-of-week Monday might output "Mon".
     */
    SHORT,
    /**
     * Short text for stand-alone use, typically an abbreviation.
     * For example, day-of-week Monday might output "Mon".
     */
    SHORT_STANDALONE,
    /**
     * Narrow text, typically a single letter.
     * For example, day-of-week Monday might output "M".
     */
    NARROW,
    /**
     * Narrow text for stand-alone use, typically a single letter.
     * For example, day-of-week Monday might output "M".
     */
    NARROW_STANDALONE;

    /**
     * Checks if the style is stand-alone.
     * 
     * @return true if the style is stand-alone
     */
    public boolean isStandalone() {
        return (ordinal() & 1) == 1;
    }

    /**
     * Converts the style to the equivalent stand-alone style.
     * 
     * @return the matching stand-alone style
     */
    public TextStyle asStandalone() {
        return TextStyle.values()[ordinal()  | 1];
    }

    /**
     * Converts the style to the equivalent normal style.
     *
     * @return the matching normal style
     */
    public TextStyle asNormal() {
        return TextStyle.values()[ordinal() & ~1];
    }

}