Coverage report

  %line %branch
org.apache.commons.jelly.tags.swt.SwtHelper
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 1  
 /*
 2  
  * Copyright 2002,2004 The Apache Software Foundation.
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License");
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *      http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13  
  * See the License for the specific language governing permissions and
 14  
  * limitations under the License.
 15  
  */
 16  
 package org.apache.commons.jelly.tags.swt;
 17  
 
 18  
 import java.lang.reflect.Field;
 19  
 import java.util.StringTokenizer;
 20  
 
 21  
 import org.apache.commons.jelly.JellyTagException;
 22  
 import org.apache.commons.jelly.tags.core.UseBeanTag;
 23  
 import org.apache.commons.logging.Log;
 24  
 import org.apache.commons.logging.LogFactory;
 25  
 
 26  
 /**
 27  
  * A helper class for working with SWT.
 28  
  * </p>
 29  
  *
 30  
  * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
 31  
  * @version 1.1
 32  
  */
 33  0
 public class SwtHelper extends UseBeanTag {
 34  
 
 35  
     /** The Log to which logging calls will be made. */
 36  0
     private static final Log log = LogFactory.getLog(SwtHelper.class);
 37  
 
 38  
 
 39  
     /**
 40  
      * Parses the comma delimited String of style codes which are or'd
 41  
      * together. The given class describes the integer static constants
 42  
      *
 43  
      * @param constantClass is the type to look for static fields
 44  
      * @param text is a comma delimited text value such as "border, resize"
 45  
      * @return the int code
 46  
      */
 47  
     public static int parseStyle(Class constantClass, String text) throws JellyTagException {
 48  0
         return parseStyle(constantClass, text, true);
 49  
     }
 50  
 
 51  
     /**
 52  
      * Parses the comma delimited String of style codes which are or'd
 53  
      * together. The given class describes the integer static constants
 54  
      *
 55  
      * @param constantClass is the type to look for static fields
 56  
      * @param text is a comma delimited text value such as "border, resize"
 57  
      * @param toUpperCase is whether the text should be converted to upper case
 58  
      * before its compared against the reflection fields
 59  
      *
 60  
      * @return the int code
 61  
      */
 62  
     public static int parseStyle(Class constantClass, String text, boolean toUpperCase) throws JellyTagException{
 63  0
         int answer = 0;
 64  0
         if (text != null) {
 65  0
             if (toUpperCase) {
 66  0
                 text = text.toUpperCase();
 67  
             }
 68  0
             StringTokenizer items = new StringTokenizer(text, ",");
 69  0
             while (items.hasMoreTokens()) {
 70  0
                 String token = items.nextToken().trim();
 71  0
                 answer |= getStyleCode(constantClass, token);
 72  
             }
 73  
         }
 74  0
         return answer;
 75  
     }
 76  
 
 77  
     /**
 78  
      * @return the code for the given word or zero if the word doesn't match a
 79  
      * valid style
 80  
      */
 81  
     public static int getStyleCode(Class constantClass,String text) throws JellyTagException {
 82  
         try {
 83  0
             Field field = constantClass.getField(text);
 84  0
             if (field == null) {
 85  0
                 log.warn( "Unknown style code: " + text +" will be ignored");
 86  0
                 return 0;
 87  
             }
 88  0
             return field.getInt(null);
 89  
         } catch (NoSuchFieldException e) {
 90  0
             throw new JellyTagException("The value: " + text + " is not understood", e);
 91  
         } catch (IllegalAccessException e) {
 92  0
             throw new JellyTagException("The value: " + text + " is not understood", e);
 93  
         }
 94  
     }
 95  
 }

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