trunk/odfdom/src/main/java/org/odftoolkit/odfdom/type/Point3D.java

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*   http://www.apache.org/licenses/LICENSE-2.0
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package org.odftoolkit.odfdom.type;

import java.util.regex.Pattern;

/**
 * This class represents the in OpenDocument format used data type {@odf.datatype point3D}
 */
public class Point3D implements OdfDataType {

	private String mPoint3D;
	private static final Pattern point3DPattern = Pattern.compile("^\\([ ]*-?([0-9]+(\\.[0-9]*)?|\\.[0-9]+)((cm)|(mm)|(in)|(pt)|(pc))([ ]+-?([0-9]+(\\.[0-9]*)?|\\.[0-9]+)((cm)|(mm)|(in)|(pt)|(pc))){2}[ ]*\\)$");
	

	/**
	 * Construct Point3D by the parsing the given string
	 *
	 * @param point3D
	 *            The String to be parsed into Point3D
	 * @throws IllegalArgumentException if the given argument is not a valid Point3D
	 */
	public Point3D(String point3D) throws IllegalArgumentException {
		if (!isValid(point3D)) {
			throw new IllegalArgumentException("parameter is invalid for datatype Point3D");
		}
		mPoint3D = point3D;
	}

	/**
	 * Returns a String Object representing this Point3D's value
	 *
	 * @return return a string representation of the value of this Point3D
	 *         object
	 */
	@Override
	public String toString() {
		return mPoint3D;
	}

	/**
	 * Returns a Point3D instance representing the specified String value
	 *
	 * @param stringValue
	 *            a String value
	 * @return return a Point3D instance representing stringValue
	 * @throws IllegalArgumentException if the given argument is not a valid Point3D
	 */
	public static Point3D valueOf(String stringValue)
			throws IllegalArgumentException {
		return new Point3D(stringValue);
	}

	/**
	 * check if the specified String instance is a valid {@odf.datatype point3D} data type
	 *
	 * @param stringValue
	 *            the value to be tested
	 * @return true if the value of argument is valid for {@odf.datatype point3D} data type
	 *         false otherwise
	 */
	public static boolean isValid(String stringValue) {
		if ((stringValue == null) || (!point3DPattern.matcher(stringValue).matches())) {
			return false;
		} else {
			return true;
		}
	}
}