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    import java.util.Map;
026    
027    public class ResourceManagerFactory {
028    
029      public static final String RESOURCE_MANAGER
030          = "org.apache.myfaces.tobago.context.ResourceManager";
031    
032      private ResourceManagerFactory() {
033      }
034    
035      private static boolean initialized;
036    
037      public static ResourceManager getResourceManager(FacesContext facesContext) {
038        assert initialized;
039        return (ResourceManager) facesContext.getExternalContext()
040            .getApplicationMap().get(RESOURCE_MANAGER);
041      }
042    
043      public static ResourceManager getResourceManager(ServletContext servletContext) {
044        assert initialized;
045        return (ResourceManager) servletContext.getAttribute(RESOURCE_MANAGER);
046      }
047    
048      public static void init(
049          ServletContext servletContext, TobagoConfig tobagoConfig)
050          throws ServletException {
051        assert !initialized;
052        ResourceManagerImpl resourceManager
053            = new ResourceManagerImpl(tobagoConfig);
054    
055        ThemeBuilder themeBuilder = new ThemeBuilder();
056        ResourceLocator resourceLocator = new ResourceLocator(
057            servletContext, resourceManager, themeBuilder);
058        resourceLocator.locate();
059        Map<String, Theme> availableThemes = themeBuilder.resolveThemes(tobagoConfig.getRenderersConfig());
060        tobagoConfig.setAvailableThemes(availableThemes);
061        for (Theme theme : availableThemes.values()) {
062          tobagoConfig.addResourceDir(theme.getResourcePath());
063        }
064    
065        servletContext.setAttribute(RESOURCE_MANAGER, resourceManager);
066    
067        initialized = true;
068      }
069    
070      public static void release(ServletContext servletContext) {
071        assert initialized;
072        initialized = false;
073        servletContext.removeAttribute(RESOURCE_MANAGER);
074      }
075    }