1 /*
2 * $Id: ClosingUIBean.java 651946 2008-04-27 13:41:38Z apetrelli $
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 package org.apache.struts2.components;
23
24 import java.io.Writer;
25
26 import javax.servlet.http.HttpServletRequest;
27 import javax.servlet.http.HttpServletResponse;
28
29 import org.apache.struts2.views.annotations.StrutsTagAttribute;
30
31 import com.opensymphony.xwork2.util.ValueStack;
32 import com.opensymphony.xwork2.util.logging.Logger;
33 import com.opensymphony.xwork2.util.logging.LoggerFactory;
34
35 /**
36 * ClosingUIBean is the standard superclass for UI components such as div etc.
37 */
38 public abstract class ClosingUIBean extends UIBean {
39 private static final Logger LOG = LoggerFactory.getLogger(ClosingUIBean.class);
40
41 protected ClosingUIBean(ValueStack stack, HttpServletRequest request, HttpServletResponse response) {
42 super(stack, request, response);
43 }
44
45 String openTemplate;
46
47 public abstract String getDefaultOpenTemplate();
48
49 @StrutsTagAttribute(description="Set template to use for opening the rendered html.")
50 public void setOpenTemplate(String openTemplate) {
51 this.openTemplate = openTemplate;
52 }
53
54 public boolean start(Writer writer) {
55 boolean result = super.start(writer);
56 try {
57 evaluateParams();
58
59 mergeTemplate(writer, buildTemplateName(openTemplate, getDefaultOpenTemplate()));
60 } catch (Exception e) {
61 LOG.error("Could not open template", e);
62 e.printStackTrace();
63 }
64
65 return result;
66 }
67 }
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