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1   /*
2    * Copyright 2007-2008 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.gwe.app.client.web.request;
18  
19  import java.util.HashMap;
20  
21  import javax.servlet.http.HttpServletRequest;
22  
23  import org.gwe.app.client.config.ClientConfig;
24  import org.gwe.app.client.web.view.Renderer;
25  
26  /**
27   * @author Marco Ruiz
28   * @since Dec 15, 2008
29   */
30  public class PageModel extends HashMap<String, Object> {
31  
32  	public PageModel(HttpServletRequest request, ClientConfig config) {
33  		for (Param field : Param.values())
34  			setParam(field, field.extractFrom(request));
35  		
36          put("request", request);
37          put("config", config);
38          put("version", config.getAppContext().getDistribution().getVersion());
39          put("renderer", new Renderer());
40      }
41  
42  	public Object setParam(Param field, Object value) {
43  	    return put(field.getFieldId(), value);
44      }
45  
46  	public <VALUE_TYPE> VALUE_TYPE getParam(Param<VALUE_TYPE, ?> field) {
47  		Object value = get(field.getFieldId());
48  		VALUE_TYPE result = field.parse(value);
49  		return "".equals(result) ? null : result;
50  	}
51  
52  	public Operation getOperation() {
53  		return Operation.getOperation(getParam(Param.OPER));
54  	}
55  
56  	public <VALUE_TYPE, OBJECT_TYPE> void addIdentifiedObject(Param<VALUE_TYPE, OBJECT_TYPE> field, OBJECT_TYPE object) {
57  		put(field.getObjectIdentifiedName(), object);
58  	}
59  
60  	public <VALUE_TYPE, OBJECT_TYPE> OBJECT_TYPE getIdentifiedObject(Param<VALUE_TYPE, OBJECT_TYPE> field) {
61  		return (OBJECT_TYPE) get(field.getObjectIdentifiedName());
62  	}
63  }