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1 package org.apache.turbine.services.jsp.util; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache Turbine" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache Turbine", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 import org.apache.turbine.modules.ScreenLoader; 58 import org.apache.turbine.services.TurbineServices; 59 import org.apache.turbine.services.template.TemplateService; 60 import org.apache.turbine.util.Log; 61 import org.apache.turbine.util.RunData; 62 63 /*** 64 * Returns output of a Navigation module. An instance of this is placed in the 65 * request by the JspLayout. This allows template authors to 66 * place the screen template within the layout.<br> 67 * Here's how it's used in a JSP template:<br> 68 * <code> 69 * <%useBean id="screen_placeholder" class="JspScreenPlaceholder" scope="request"/%> 70 * ... 71 * <%= screen_placeholder %> 72 *</code> 73 * 74 * @author <a href="john.mcnally@clearink.com">John D. McNally</a> 75 */ 76 public class JspScreenPlaceholder 77 { 78 /* The RunData object */ 79 private RunData data; 80 81 /*** 82 * Constructor 83 * 84 * @param RunData 85 */ 86 public JspScreenPlaceholder(RunData data) 87 { 88 this.data = data; 89 } 90 91 /*** 92 * builds the output of the navigation template 93 * @param String the name of the navigation template 94 * @return String 95 */ 96 public void exec() 97 { 98 String template = null; 99 String module = null; 100 try 101 { 102 template = data.getTemplateInfo().getScreenTemplate(); 103 module = ((TemplateService)TurbineServices.getInstance().getService( 104 TemplateService.SERVICE_NAME)).getScreenName(template); 105 ScreenLoader.getInstance().exec(data, module); 106 } 107 catch (Exception e) 108 { 109 String message = "Error processing navigation template:" + 110 template + " using module: " + module; 111 Log.error(message, e); 112 try 113 { 114 data.getOut().print("Error processing navigation template: " 115 + template + " using module: " + module); 116 } 117 catch(java.io.IOException ioe) {} 118 } 119 } 120 }

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