// Copyright 2007 The Apache Software Foundation

 //

 // Licensed under the Apache License, Version 2.0 (the "License");

 // you may not use this file except in compliance with the License.

 // You may obtain a copy of the License at

 //

 //     http://www.apache.org/licenses/LICENSE-2.0

 //

 // Unless required by applicable law or agreed to in writing, software

 // distributed under the License is distributed on an "AS IS" BASIS,

 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 // See the License for the specific language governing permissions and

 // limitations under the License.

 package org.apache.tapestry5.internal.transform;

 import org.apache.tapestry5.Asset;

 import org.apache.tapestry5.RenderSupport;

 import org.apache.tapestry5.annotations.IncludeStylesheet;

 import org.apache.tapestry5.ioc.services.SymbolSource;

 import org.apache.tapestry5.model.MutableComponentModel;

 import org.apache.tapestry5.services.AssetSource;

 import org.apache.tapestry5.services.ClassTransformation;

 /**

  * Recognizes the {@link org.apache.tapestry5.annotations.IncludeStylesheet} annotation and ensures that {@link

  * org.apache.tapestry5.RenderSupport#addStylesheetLink(org.apache.tapestry5.Asset, String)} is invoked.

  */

 public class IncludeStylesheetWorker extends AbstractIncludeAssetWorker

 {

     private final RenderSupport renderSupport;

     public IncludeStylesheetWorker(AssetSource assetSource, RenderSupport renderSupport,

                                    SymbolSource symbolSource)

     {

         super(assetSource, symbolSource);

         this.renderSupport = renderSupport;

     }

     public void transform(ClassTransformation transformation, final MutableComponentModel model)

     {

         IncludeStylesheet annotation = transformation.getAnnotation(IncludeStylesheet.class);

         if (annotation != null) addOperationForAssetPaths(transformation, model, annotation.value());

     }

     protected void handleAsset(Asset asset)

     {

         renderSupport.addStylesheetLink(asset, null);

     }

 }