1 /*
2 * Copyright 2002-2008 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.springbyexample.web.servlet.view.tiles2;
18
19 import java.util.Map;
20
21 import javax.servlet.http.HttpServletRequest;
22 import javax.servlet.http.HttpServletResponse;
23
24 import org.springframework.webflow.execution.RequestContext;
25 import org.springframework.webflow.execution.RequestContextHolder;
26 import org.springframework.webflow.execution.View;
27
28 /**
29 * <p>If the request isn't an AJAX request, <code>DynamicTilesView</code>
30 * will handle the request. Otherwise it is expected that an AJAX
31 * view render will be next in the chain and can handle the request.</p>
32 *
33 * <p><strong>Note</strong>: All code is copied from <code>AjaxDynamicTilesView</code> (giving author credit to original author).
34 * Necessary to duplicate logic since <code>getRenderFragments</code> is protected, so no way to delegate to
35 * the original code.</p>
36 *
37 * @author Jeremy Grelle
38 */
39 public class FlowAjaxDynamicTilesView extends AjaxDynamicTilesView {
40
41 /**
42 * <p>Gets rendered fragments.</p>
43 *
44 * <p><strong>Note</strong>: Copied from <code>FlowAjaxTilesView</code>.</p>
45 */
46 protected String[] getRenderFragments(Map model, HttpServletRequest request, HttpServletResponse response) {
47 RequestContext context = RequestContextHolder.getRequestContext();
48
49 if (context == null) {
50 return super.getRenderFragments(model, request, response);
51 } else {
52 String[] fragments = (String[]) context.getFlashScope().get(View.RENDER_FRAGMENTS_ATTRIBUTE);
53 if (fragments == null) {
54 return super.getRenderFragments(model, request, response);
55 }
56 return fragments;
57 }
58 }
59
60 }