Coverage report

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org.apache.turbine.modules.screens.RawScreen
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 package org.apache.turbine.modules.screens;
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 /*
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  * Copyright 2001-2005 The Apache Software Foundation.
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  *
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  * Licensed under the Apache License, Version 2.0 (the "License")
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  * you may not use this file except in compliance with the License.
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  * You may obtain a copy of the License at
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  *
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  *     http://www.apache.org/licenses/LICENSE-2.0
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  *
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  * Unless required by applicable law or agreed to in writing, software
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  * distributed under the License is distributed on an "AS IS" BASIS,
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  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15  
  * See the License for the specific language governing permissions and
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  * limitations under the License.
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  */
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 19  
 import org.apache.ecs.ConcreteElement;
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 import org.apache.turbine.modules.Screen;
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 import org.apache.turbine.util.RunData;
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 /**
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  * Base class for writing Screens that output binary data.  This class
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  * is provided as a helper class for those who want to write Screens
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  * that output raw binary data.  For example, it may be extended into
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  * a Screen that outputs a SVG file or a SWF (Flash Player format)
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  * movie.  The only thing one has to do is to implement the two
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  * methods <code>getContentType(RunData data)</code> and
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  * <code>doOutput(RunData data)</code> (see below).
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  *
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  * <p> You migth want to take a look at the ImageServer screen class
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  * contained in the TDK.<br>
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  *
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  * @author <a href="mailto:rkoenig@chez.com">Regis Koenig</a>
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  * @version $Id: RawScreen.java 264148 2005-08-29 14:21:04Z henning $
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  */
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 public abstract class RawScreen extends Screen
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 {
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     /**
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      * Build the Screen.  This method actually makes a call to the
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      * doOutput() method in order to generate the Screen content.
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      *
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      * @param data Turbine information.
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      * @return A ConcreteElement.
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      * @exception Exception, a generic exception.
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      */
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     protected final ConcreteElement doBuild(RunData data)
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             throws Exception
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     {
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         data.getResponse().setContentType(getContentType(data));
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         data.declareDirectResponse();
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         doOutput(data);
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         return null;
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     }
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 57  
     /**
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      * Set the content type.  This method should be overidden to
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      * actually set the real content-type header of the output.
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      *
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      * @param data Turbine information.
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      * @return A String with the content type.
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      */
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     protected abstract String getContentType(RunData data);
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 66  
     /**
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      * Actually output the dynamic content.  The OutputStream can be
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      * accessed like this: <pre>OutputStream out =
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      * data.getResponse().getOutputStream();</pre>.
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      *
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      * @param data Turbine information.
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      * @exception Exception, a generic exception.
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      */
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     protected abstract void doOutput(RunData data)
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             throws Exception;
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     /**
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      * The layout must be set to null.
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      *
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      * @param data Turbine information.
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      * @return A null String.
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      */
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     public final String getLayout(RunData data)
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     {
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         return null;
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     }
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 }

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