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/*
 * -----------------------------------------------------------------------
 * Copyright © 2013-2014 Meno Hochschild, 
 * -----------------------------------------------------------------------
 * This file (Quarter.java) is part of project Time4J.
 *
 * Time4J is free software: You can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * Time4J is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Time4J. If not, see .
 * -----------------------------------------------------------------------
 */

package net.time4j;

import net.time4j.base.GregorianDate;
import net.time4j.engine.ChronoCondition;
import net.time4j.format.CalendarText;
import net.time4j.format.OutputContext;
import net.time4j.format.TextWidth;

import java.util.Locale;

import static net.time4j.format.CalendarText.ISO_CALENDAR_TYPE;


/**
 * 

Represents a quarter (in most cases of a year).

* * @author Meno Hochschild */ /*[deutsch] *

Repräsentiert ein Quartal (meist eines Jahres).

* * @author Meno Hochschild */ public enum Quarter implements ChronoCondition { //~ Statische Felder/Initialisierungen -------------------------------- /** *

First quarter with the numerical value {@code 1}.

*/ /*[deutsch] *

Erstes Quartal mit dem numerischen Wert {@code 1}.

*/ Q1, /** *

Second quarter with the numerical value {@code 2}.

*/ /*[deutsch] *

Zweites Quartal mit dem numerischen Wert {@code 2}.

*/ Q2, /** *

Third quarter with the numerical value {@code 3}.

*/ /*[deutsch] *

Drittes Quartal mit dem numerischen Wert {@code 3}.

*/ Q3, /** *

Last quarter with the numerical value {@code 4}.

*/ /*[deutsch] *

Letztes Quartal mit dem numerischen Wert {@code 4}.

*/ Q4; private static final Quarter[] ENUMS = Quarter.values(); // Cache //~ Methoden ---------------------------------------------------------- /** *

Gets the enum-constant which corresponds to the given numerical * value.

* * @param quarter value in the range [1-4] * @return enum * @throws IllegalArgumentException if given argument is out of range */ /*[deutsch] *

Liefert die zum chronologischen Integer-Wert passende * Enum-Konstante.

* * @param quarter value in the range [1-4] * @return enum * @throws IllegalArgumentException if given argument is out of range */ public static Quarter valueOf(int quarter) { if ((quarter < 1) || (quarter > 4)) { throw new IllegalArgumentException("Out of range: " + quarter); } return ENUMS[quarter - 1]; } /** *

Gets the corresponding numerical value.

* * @return int (Q1 = 1, Q2 = 2, Q3 = 3, Q4 = 4) */ /*[deutsch] *

Liefert den korrespondierenden chronologischen Integer-Wert.

* * @return int (Q1 = 1, Q2 = 2, Q3 = 3, Q4 = 4) */ public int getValue() { return (this.ordinal() + 1); } /** *

Rolls to the next quarter.

* *

The result is {@code Q1} if this method is applied on {@code Q4}.

* * @return next quarter rolling at last quarter */ /*[deutsch] *

Ermittelt das nächste Quartal.

* *

Auf {@code Q4} angewandt ist das Ergebnis {@code Q1}.

* * @return next quarter rolling at last quarter */ public Quarter next() { return this.roll(1); } /** *

Rolls to the previous quarter.

* *

The result is {@code Q4} if this method is applied on {@code Q1}.

* * @return previous quarter rolling at first quarter */ /*[deutsch] *

Ermittelt das vorherige Quartal.

* *

Auf {@code Q1} angewandt ist das Ergebnis {@code Q4}.

* * @return previous quarter rolling at first quarter */ public Quarter previous() { return this.roll(-1); } /** *

Rolls by given amount of quarters.

* * @param quarters count of quarters (maybe negative) * @return result of rolling operation */ /*[deutsch] *

Rollt um die angegebene Anzahl von Quartalen vor oder * zurück.

* * @param quarters count of quarters (maybe negative) * @return result of rolling operation */ public Quarter roll(int quarters) { return Quarter.valueOf( (this.ordinal() + (quarters % 4 + 4)) % 4 + 1); } /** *

Equivalent to the expression * {@code getDisplayName(locale, TextWidth.WIDE, OutputContext.FORMAT)}. *

* * @param locale language setting * @return descriptive text (long form, never {@code null}) * @see #getDisplayName(Locale, TextWidth, OutputContext) */ /*[deutsch] *

Entspricht dem Ausdruck * {@code getDisplayName(locale, TextWidth.WIDE, OutputContext.FORMAT)}. *

* * @param locale language setting * @return descriptive text (long form, never {@code null}) * @see #getDisplayName(Locale, TextWidth, OutputContext) */ public String getDisplayName(Locale locale) { return this.getDisplayName( locale, TextWidth.WIDE, OutputContext.FORMAT); } /** *

Gets the description text dependent on the locale and style * parameters.

* *

The second argument controls the width of description while the * third argument is only relevant for languages which make a difference * between stand-alone forms and embedded text forms (does not matter in * English).

* * @param locale language setting * @param width text width * @param context output context * @return descriptive text for given locale and style (never {@code null}) */ /*[deutsch] *

Liefert den sprachabhängigen Beschreibungstext.

* *

Über das zweite Argument kann gesteuert werden, ob eine kurze * oder eine lange Form des Beschreibungstexts ausgegeben werden soll. Das * ist besonders sinnvoll in Benutzeroberflächen, wo zwischen der * Beschriftung und der detaillierten Erläuterung einer graphischen * Komponente unterschieden wird. Das dritte Argument ist in Sprachen von * Belang, die verschiedene grammatikalische Formen für die Ausgabe * als alleinstehend oder eingebettet in formatierten Text kennen.

* * @param locale language setting * @param width text width * @param context output context * @return descriptive text for given locale and style (never {@code null}) */ public String getDisplayName( Locale locale, TextWidth width, OutputContext context ) { CalendarText names = CalendarText.getInstance(ISO_CALENDAR_TYPE, locale); return names.getQuarters(width, context).print(this); } @Override public boolean test(GregorianDate context) { int month = context.getMonth(); return (this.getValue() == ((month - 1) / 3) + 1); } }




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