001    package org.apache.myfaces.tobago.context;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one or more
005     * contributor license agreements.  See the NOTICE file distributed with
006     * this work for additional information regarding copyright ownership.
007     * The ASF licenses this file to You under the Apache License, Version 2.0
008     * (the "License"); you may not use this file except in compliance with
009     * the License.  You may obtain a copy of the License at
010     *
011     *      http://www.apache.org/licenses/LICENSE-2.0
012     *
013     * Unless required by applicable law or agreed to in writing, software
014     * distributed under the License is distributed on an "AS IS" BASIS,
015     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016     * See the License for the specific language governing permissions and
017     * limitations under the License.
018     */
019    
020    import org.apache.myfaces.tobago.config.TobagoConfig;
021    
022    import javax.faces.context.FacesContext;
023    import javax.servlet.ServletContext;
024    import javax.servlet.ServletException;
025    
026    public class ResourceManagerFactory {
027    
028      public static final String RESOURCE_MANAGER
029          = "org.apache.myfaces.tobago.context.ResourceManager";
030    
031      private ResourceManagerFactory() {
032      }
033    
034      private static boolean initialized;
035    
036      public static ResourceManager getResourceManager(FacesContext facesContext) {
037        assert initialized;
038        return (ResourceManager) facesContext.getExternalContext()
039            .getApplicationMap().get(RESOURCE_MANAGER);
040      }
041    
042      public static ResourceManager getResourceManager(ServletContext servletContext) {
043        assert initialized;
044        return (ResourceManager) servletContext.getAttribute(RESOURCE_MANAGER);
045      }
046    
047      public static void init(
048          ServletContext servletContext, TobagoConfig tobagoConfig)
049          throws ServletException {
050        assert !initialized;
051        ResourceManagerImpl resourceManager= new ResourceManagerImpl(tobagoConfig);
052    
053        ThemeBuilder themeBuilder = new ThemeBuilder(tobagoConfig);
054        ResourceLocator resourceLocator = new ResourceLocator(servletContext, resourceManager, themeBuilder);
055        resourceLocator.locate();
056        themeBuilder.resolveThemes();
057    
058        servletContext.setAttribute(RESOURCE_MANAGER, resourceManager);
059    
060        initialized = true;
061      }
062    
063      public static void release(ServletContext servletContext) {
064        assert initialized;
065        initialized = false;
066        servletContext.removeAttribute(RESOURCE_MANAGER);
067      }
068    }