Coverage Report - org.apache.tapestry.wml.Select
 
Classes in this File Line Coverage Branch Coverage Complexity
Select
0%
0/23
0%
0/14
2.4
 
 1  
 // Copyright 2004, 2005 The Apache Software Foundation
 2  
 //
 3  
 // Licensed under the Apache License, Version 2.0 (the "License");
 4  
 // you may not use this file except in compliance with the License.
 5  
 // You may obtain a copy of the License at
 6  
 //
 7  
 //     http://www.apache.org/licenses/LICENSE-2.0
 8  
 //
 9  
 // Unless required by applicable law or agreed to in writing, software
 10  
 // distributed under the License is distributed on an "AS IS" BASIS,
 11  
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12  
 // See the License for the specific language governing permissions and
 13  
 // limitations under the License.
 14  
 
 15  
 package org.apache.tapestry.wml;
 16  
 
 17  
 import org.apache.hivemind.ApplicationRuntimeException;
 18  
 import org.apache.hivemind.HiveMind;
 19  
 import org.apache.tapestry.AbstractComponent;
 20  
 import org.apache.tapestry.IMarkupWriter;
 21  
 import org.apache.tapestry.IRequestCycle;
 22  
 import org.apache.tapestry.Tapestry;
 23  
 
 24  
 /**
 25  
  * The Select element lets users pick from a list of options. Each option is specified by an Option
 26  
  * element. Each Option element may have one line of formatted text (which may be wrapped or
 27  
  * truncated by the user agent if too long). Unless multiple selections are required it is generally
 28  
  * easier to use the {@link PropertySelection}component.
 29  
  * 
 30  
  * @author David Solis
 31  
  * @since 3.0
 32  
  */
 33  0
 public abstract class Select extends AbstractComponent
 34  
 {
 35  
     /**
 36  
      * Used by the <code>Select</code> to record itself as a {@link IRequestCycle}attribute, so
 37  
      * that the {@link Option}components it wraps can have access to it.
 38  
      */
 39  
 
 40  
     private static final String ATTRIBUTE_NAME = "org.apache.tapestry.active.Select";
 41  
 
 42  
     /**
 43  
      * @see org.apache.tapestry.AbstractComponent#renderComponent(IMarkupWriter, IRequestCycle)
 44  
      */
 45  
 
 46  
     protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
 47  
     {
 48  0
         if (cycle.getAttribute(ATTRIBUTE_NAME) != null)
 49  0
             throw new ApplicationRuntimeException(Tapestry.getMessage("Select.may-not-nest"), this,
 50  
                     null, null);
 51  
 
 52  0
         cycle.setAttribute(ATTRIBUTE_NAME, this);
 53  
 
 54  0
         boolean render = !cycle.isRewinding();
 55  
 
 56  0
         if (render)
 57  
         {
 58  0
             writer.begin("select");
 59  
 
 60  0
             writer.attribute("name", getName());
 61  
 
 62  0
             String value = getValue();
 63  0
             if (HiveMind.isNonBlank(value))
 64  0
                 writer.attribute("value", value);
 65  
 
 66  0
             String title = getTitle();
 67  0
             if (HiveMind.isNonBlank(title))
 68  0
                 writer.attribute("title", title);
 69  
 
 70  0
             boolean multiple = isMultiple();
 71  0
             if (multiple)
 72  0
                 writer.attribute("multiple", multiple);
 73  
 
 74  0
             renderInformalParameters(writer, cycle);
 75  
         }
 76  
 
 77  0
         renderBody(writer, cycle);
 78  
 
 79  0
         if (render)
 80  
         {
 81  0
             writer.end();
 82  
         }
 83  
 
 84  0
         cycle.removeAttribute(ATTRIBUTE_NAME);
 85  0
     }
 86  
 
 87  
     public abstract boolean isMultiple();
 88  
 
 89  
     public abstract String getName();
 90  
 
 91  
     public abstract String getValue();
 92  
 
 93  
     public abstract String getTitle();
 94  
 }