DialogIntegerValueConverter


1   /*******************************************************************************
2    * Copyright (c) 2006 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    *
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.ui.internal.cheatsheets.handlers;
12  
13  import org.eclipse.core.commands.AbstractParameterValueConverter;
14  import org.eclipse.core.commands.ParameterValueConversionException;
15  
16  /**
17   * A command parameter value converter to convert between Integers and their
18   * String representations for use in the open dialog commands.
19   * 
20   * @since 3.2
21   */
22  public class DialogIntegerValueConverter extends
23          AbstractParameterValueConverter {
24  
25      public Object   convertToObject(String   parameterValue)
26              throws ParameterValueConversionException {
27  
28          try {
29              int i = Integer.parseInt(parameterValue);
30              return new Integer  (i);
31          } catch (NumberFormatException   ex) {
32              throw new ParameterValueConversionException(
33                      "error converting to integer: " + parameterValue); //$NON-NLS-1$
34          }
35      }
36  
37      public String   convertToString(Object   parameterValue)
38              throws ParameterValueConversionException {
39  
40          if (!(parameterValue instanceof Integer  )) {
41              throw new ParameterValueConversionException(
42                      "value for conversion must be an Integer"); //$NON-NLS-1$
43          }
44  
45          Integer   i = (Integer  ) parameterValue;
46          return Integer.toString(i.intValue());
47      }
48  
49  }
50

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