001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *   http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    package org.apache.myfaces.tobago.taglib.component;
021    
022    import org.apache.myfaces.tobago.apt.annotation.BodyContent;
023    import org.apache.myfaces.tobago.apt.annotation.Tag;
024    import org.apache.myfaces.tobago.apt.annotation.TagAttribute;
025    import org.apache.myfaces.tobago.util.BundleMapWrapper;
026    
027    import javax.faces.context.FacesContext;
028    import javax.faces.webapp.UIComponentTag;
029    import javax.servlet.jsp.JspException;
030    import javax.servlet.jsp.tagext.TagSupport;
031    import java.util.Map;
032    
033    /**
034     * Load a resource bundle localized for the Locale of the current view
035     * from the tobago resource path, and expose it (as a Map) in the request
036     * attributes of the current request.
037     */
038    @Tag(name = "loadBundle", bodyContent = BodyContent.EMPTY)
039    public class LoadBundleTag extends TagSupport {
040    
041      private static final long serialVersionUID = 4949984721486410191L;
042    
043      private String basename;
044      private String var;
045    
046      public int doStartTag() throws JspException {
047    
048        String bundleBaseName;
049        FacesContext context = FacesContext.getCurrentInstance();
050        if (UIComponentTag.isValueReference(basename)) {
051          bundleBaseName = (String) context.getApplication().createValueBinding(basename).getValue(context);
052        } else {
053          bundleBaseName = basename;
054        }
055        Map toStore = new BundleMapWrapper(bundleBaseName);
056        // TODO find a better way
057        context.getExternalContext().getSessionMap().put(var, toStore);
058    //        .getRequestMap().put(var, toStore);
059    
060        return EVAL_BODY_INCLUDE;
061      }
062    
063      public void release() {
064        basename = null;
065        var = null;
066      }
067    
068      public String getBasename() {
069        return basename;
070      }
071    
072      /**
073       * Base name of the resource bundle to be loaded.
074       */
075      @TagAttribute(required = true)
076      public void setBasename(String basename) {
077        this.basename = basename;
078      }
079    
080      public String getVar() {
081        return var;
082      }
083    
084      /**
085       * Name of a session-scope attribute under which the bundle data
086       * will be exposed.
087       */
088      @TagAttribute(required = true)
089      public void setVar(String var) {
090        this.var = var;
091      }
092    
093    }
094