StyleNameRef.java

/**
 * **********************************************************************
 *
 * <p>Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the License. You may obtain a
 * copy of the License at
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * <p>**********************************************************************
 */
package org.odftoolkit.odfdom.type;

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

  String mStyleNameRef;

  /**
   * Construct StyleNameRef by the parsing the given string
   *
   * @param styleNameRef The String to be parsed into StyleNameRef
   * @throws IllegalArgumentException if the given argument is not a valid StyleNameRef
   */
  public StyleNameRef(String styleNameRef) throws IllegalArgumentException {

    if (styleNameRef == null) {
      throw new IllegalArgumentException("parameter can not be null for StyleNameRef");
    }
    if (styleNameRef.length() == 0) {
      mStyleNameRef = styleNameRef;
      return;
    }
    // validate 'NCName' type which is defined in W3C schema
    // http://www.w3.org/TR/xmlschema-2/#NCName
    if (!W3CSchemaType.isValid("NCName", styleNameRef)) {
      throw new IllegalArgumentException(
          "parameter '" + styleNameRef + "' is invalid for datatype StyleNameRef");
    }
    mStyleNameRef = styleNameRef;
  }

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

  /**
   * Returns a StyleNameRef instance representing the specified String value
   *
   * @param stringValue a String value which can construct an OdfStyleNameRef
   * @return a StyleNameRef instance representing stringValue
   * @throws IllegalArgumentException
   */
  public static StyleNameRef valueOf(String stringValue) throws IllegalArgumentException {
    return new StyleNameRef(stringValue);
  }

  /**
   * check if the specified String is a valid {@odf.datatype styleNameRef} data type
   *
   * @param stringValue the value to be tested
   * @return true if the value of argument is valid for {@odf.datatype styleNameRef} data type false
   *     otherwise
   */
  public static boolean isValid(String stringValue) {
    if (stringValue == null) {
      return false;
    } else if (stringValue.length() == 0) {
      return true;
    } else {
      return W3CSchemaType.isValid("NCName", stringValue);
    }
  }
}