1 /*
2 * $Id: ClosingUIBean.java 497654 2007-01-19 00:21:57Z rgielen $
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 package org.apache.struts2.components;
22
23 import java.io.Writer;
24
25 import javax.servlet.http.HttpServletRequest;
26 import javax.servlet.http.HttpServletResponse;
27
28 import org.apache.commons.logging.Log;
29 import org.apache.commons.logging.LogFactory;
30 import org.apache.struts2.views.annotations.StrutsTagAttribute;
31
32 import com.opensymphony.xwork2.util.ValueStack;
33
34 /**
35 * ClosingUIBean is the standard superclass for UI components such as div etc.
36 */
37 public abstract class ClosingUIBean extends UIBean {
38 private static final Log LOG = LogFactory.getLog(ClosingUIBean.class);
39
40 protected ClosingUIBean(ValueStack stack, HttpServletRequest request, HttpServletResponse response) {
41 super(stack, request, response);
42 }
43
44 String openTemplate;
45
46 public abstract String getDefaultOpenTemplate();
47
48 @StrutsTagAttribute(description="Set template to use for opening the rendered html.")
49 public void setOpenTemplate(String openTemplate) {
50 this.openTemplate = openTemplate;
51 }
52
53 public boolean start(Writer writer) {
54 boolean result = super.start(writer);
55 try {
56 evaluateParams();
57
58 mergeTemplate(writer, buildTemplateName(openTemplate, getDefaultOpenTemplate()));
59 } catch (Exception e) {
60 LOG.error("Could not open template", e);
61 e.printStackTrace();
62 }
63
64 return result;
65 }
66 }
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