01: // Copyright 2006, 2007 The Apache Software Foundation
02: //
03: // Licensed under the Apache License, Version 2.0 (the "License");
04: // you may not use this file except in compliance with the License.
05: // You may obtain a copy of the License at
06: //
07: // http://www.apache.org/licenses/LICENSE-2.0
08: //
09: // Unless required by applicable law or agreed to in writing, software
10: // distributed under the License is distributed on an "AS IS" BASIS,
11: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: // See the License for the specific language governing permissions and
13: // limitations under the License.
14:
15: package org.apache.tapestry.internal.services;
16:
17: import org.apache.tapestry.Link;
18: import org.apache.tapestry.internal.structure.Page;
19: import org.apache.tapestry.runtime.Component;
20: import org.apache.tapestry.services.ActionResponseGenerator;
21: import org.apache.tapestry.services.ComponentEventResultProcessor;
22:
23: /**
24: * Used when a component event handler returns a string value. The value is interpreted as the
25: * logical name of a page. A link to the page will be sent.
26: *
27: * @see LinkActionResponseGenerator
28: */
29: public class StringResultProcessor implements
30: ComponentEventResultProcessor<String> {
31: private final RequestPageCache _requestPageCache;
32:
33: private final LinkFactory _linkFactory;
34:
35: public StringResultProcessor(RequestPageCache requestPageCache,
36: LinkFactory linkFactory) {
37: _requestPageCache = requestPageCache;
38: _linkFactory = linkFactory;
39: }
40:
41: public ActionResponseGenerator processComponentEvent(String value,
42: Component component, String methodDescripion) {
43: Page page = _requestPageCache.get(value);
44:
45: Link link = _linkFactory.createPageLink(page, false);
46:
47: return new LinkActionResponseGenerator(link);
48: }
49:
50: }
|