Coverage report

  %line %branch
org.apache.turbine.util.template.TemplateNavigation
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 1  
 package org.apache.turbine.util.template;
 2  
 
 3  
 /*
 4  
  * Copyright 2001-2005 The Apache Software Foundation.
 5  
  *
 6  
  * 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;
 23  
 
 24  
 import org.apache.turbine.modules.NavigationLoader;
 25  
 
 26  
 import org.apache.turbine.services.template.TurbineTemplate;
 27  
 
 28  
 import org.apache.turbine.util.RunData;
 29  
 
 30  
 /**
 31  
  * Returns output of a Navigation module.  An instance of this is
 32  
  * placed in the WebMacro context by the WebMacroSiteLayout.  This
 33  
  * allows template authors to set the navigation template they'd like
 34  
  * to place in their templates.  Here's how it's used in a
 35  
  * template:
 36  
  *
 37  
  * <p><code>
 38  
  * $navigation.setTemplate("admin_navigation.wm")
 39  
  * </code>
 40  
  *
 41  
  * @author <a href="mbryson@mont.mindspring.com">Dave Bryson</a>
 42  
  * @version $Id: TemplateNavigation.java 264148 2005-08-29 14:21:04Z henning $
 43  
  */
 44  
 public class TemplateNavigation
 45  
 {
 46  
     /** Logging */
 47  0
     private static Log log = LogFactory.getLog(TemplateNavigation.class);
 48  
 
 49  
     /* The RunData object. */
 50  
     private RunData data;
 51  
 
 52  
     /* The name of the navigation template. */
 53  0
     private String template = null;
 54  
 
 55  
     /**
 56  
      * Constructor
 57  
      *
 58  
      * @param data A Turbine RunData object.
 59  
      */
 60  
     public TemplateNavigation(RunData data)
 61  0
     {
 62  0
         this.data = data;
 63  0
     }
 64  
 
 65  
     /**
 66  
      * Set the template.
 67  
      *
 68  
      * @param template A String with the name of the navigation
 69  
      * template.
 70  
      * @return A TemplateNavigation (self).
 71  
      */
 72  
     public TemplateNavigation setTemplate(String template)
 73  
     {
 74  0
         log.debug("setTemplate(" + template + ")");
 75  0
         this.template = template;
 76  0
         return this;
 77  
     }
 78  
 
 79  
     /**
 80  
      * Builds the output of the navigation template.
 81  
      *
 82  
      * @return A String.
 83  
      */
 84  
     public String toString()
 85  
     {
 86  0
         String module = null;
 87  0
         String returnValue = null;
 88  
 
 89  
         try
 90  
         {
 91  0
             if (template == null)
 92  
             {
 93  0
                 returnValue = "Navigation Template is null (Might be unset)";
 94  0
                 throw new Exception(returnValue);
 95  
             }
 96  
 
 97  0
             data.getTemplateInfo().setNavigationTemplate(template);
 98  0
             module = TurbineTemplate.getNavigationName(template);
 99  
 
 100  0
             if (module == null)
 101  
             {
 102  0
                 returnValue = "Template Service returned null for Navigation Template " + template;
 103  0
                 throw new Exception(returnValue);
 104  
             }
 105  
 
 106  0
             ConcreteElement results =
 107  
                     NavigationLoader.getInstance().eval(data, module);
 108  0
             returnValue = results.toString();
 109  
         }
 110  0
         catch (Exception e)
 111  
         {
 112  0
             if (returnValue == null)
 113  
             {
 114  0
                 returnValue = "Error processing navigation template: "
 115  
                         + template + ", using module: " + module;
 116  
             }
 117  0
             log.error(returnValue, e);
 118  0
         }
 119  
 
 120  0
         return class="keyword">returnValue;
 121  
     }
 122  
 }

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