trunk/odfdom/src/main/java/org/odftoolkit/odfdom/type/ValueType.java

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* 
*  Licensed to the Apache Software Foundation (ASF) under one
*  or more contributor license agreements.  See the NOTICE file
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*  to you under the Apache License, Version 2.0 (the
*  "License"); you may not use this file except in compliance
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*
*   http://www.apache.org/licenses/LICENSE-2.0
*
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package org.odftoolkit.odfdom.type;

/**
 * This class represents the in OpenDocument format used data type {@odf.datatype valueType}
 * 
 */
public enum ValueType implements OdfDataType {

	STRING("string"), TIME("time"), CURRENCY("currency"), FLOAT("float"), DATE(
	"date"), BOOLEAN("boolean"), PERCENTAGE("percentage");
	private String mValue;

	ValueType(String aValue) {
		mValue = aValue;
	}

	/**
	 *gets the name of this enum.
	 *
	 *@return return the name of ValueType
	 */
	@Override
	public String toString() {
		return mValue;
	}

	/**
	 *enum to String, gets the name of this enum constant as a string.
	 *
	 *@param aEnum  the constant of ValueType
	 *@return return the name of ValueType
	 */
	public static String toString(ValueType aEnum) {
		return aEnum.toString();
	}

	/**
	 *String to enum, turns a String into its corresponding enum constant
	 *
	 *@param stringValue
	 *            the name of ValueType
	 *@return return the constant of ValueType
	 */
	public static ValueType enumValueOf(String stringValue) {
		for (ValueType aIter : values()) {
			if (stringValue.equals(aIter.toString())) {
				return aIter;
			}
		}
		return null;
	}

	/**
	 * check if the specified String is a valid {@odf.datatype valueType} data type
	 *
	 * @param stringValue
	 *            the value to be tested
	 * @return true if the value of argument is valid for {@odf.datatype valueType} data type
	 *         false otherwise
	 */
	public static boolean isValid(String stringValue) {
		if (stringValue == null) {
			return false;
		}

		if (ValueType.enumValueOf(stringValue) != null) {
			return true;
		} else {
			return false;
		}
	}
}