Coverage report

  %line %branch
org.apache.turbine.util.template.TemplateScreen
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 1  
 package org.apache.turbine.util.template;
 2  
 
 3  
 /*
 4  
  * Copyright 2001-2005 The Apache Software Foundation.
 5  
  *
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  * Licensed under the Apache License, Version 2.0 (the "License")
 7  
  * you may not use this file except in compliance with the License.
 8  
  * You may obtain a copy of the License at
 9  
  *
 10  
  *     http://www.apache.org/licenses/LICENSE-2.0
 11  
  *
 12  
  * Unless required by applicable law or agreed to in writing, software
 13  
  * distributed under the License is distributed on an "AS IS" BASIS,
 14  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15  
  * See the License for the specific language governing permissions and
 16  
  * limitations under the License.
 17  
  */
 18  
 
 19  
 import org.apache.commons.logging.Log;
 20  
 import org.apache.commons.logging.LogFactory;
 21  
 
 22  
 import org.apache.ecs.ConcreteElement;
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 24  
 import org.apache.turbine.modules.ScreenLoader;
 25  
 import org.apache.turbine.util.RunData;
 26  
 
 27  
 /**
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  * Returns output of a Screen module.  An instance of this is
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  * placed in the Velocity context by the VelocityDirectLayout.  This
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  * allows the screen to be executed only at rendering.
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  * Here's how it's used in a template:
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  *
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  * <p>
 34  
  * <code>
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  * $screen_placeholder
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  * </code>
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  * <p>
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  * <code>
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  * $screen_placeholder.setScreen("Test")
 40  
  * </code>
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  * </p>
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  *
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  * @author <a href="raphael@apache.org">RaphaĆ«l Luta</a>
 44  
  * @version $Id: TemplateScreen.java 278958 2005-09-06 09:35:39Z henning $
 45  
  */
 46  
 public class TemplateScreen
 47  
 {
 48  
     /** Logging */
 49  0
     private static Log log = LogFactory.getLog(TemplateScreen.class);
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 51  
     /* The RunData object. */
 52  
     private RunData data;
 53  
 
 54  
     /* The name of the screen template. */
 55  
     private String screen;
 56  
 
 57  
     /**
 58  
      * Constructor
 59  
      *
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      * @param data A Turbine RunData object.
 61  
      */
 62  
     public TemplateScreen(RunData data)
 63  0
     {
 64  0
         this.data = data;
 65  0
         this.screen = data.getScreen();
 66  0
     }
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 68  
     /**
 69  
      * Set the screen.
 70  
      *
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      * @param screen A String with the name of the screen module
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      * @return A TemplateScreen (self).
 73  
      */
 74  
     public TemplateScreen setScreen(String screen)
 75  
     {
 76  0
         this.screen = screen;
 77  0
         return this;
 78  
     }
 79  
 
 80  
     /**
 81  
      * Builds the output of the navigation template.
 82  
      *
 83  
      * @return A String.
 84  
      */
 85  
     public String toString()
 86  
     {
 87  0
         String returnValue = "";
 88  
 
 89  
         try
 90  
         {
 91  0
             ConcreteElement results = ScreenLoader.getInstance()
 92  
                     .eval(data, this.screen);
 93  
 
 94  0
             if (results != null)
 95  
             {
 96  0
                 returnValue = results.toString();
 97  
             }
 98  
         }
 99  0
         catch (Exception e)
 100  
         {
 101  0
             log.error(e);
 102  0
         }
 103  
 
 104  0
         return class="keyword">returnValue;
 105  
     }
 106  
 }

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