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1   /*--------------------------------------------------------------------------
2    *  Copyright 2007 utgenome.org
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  // UTGB Common Project
18  //
19  // BooleanType.java
20  // Since: 2007/04/13
21  //
22  // $Date$
23  // $URL$ 
24  // $Author$
25  //--------------------------------------
26  package org.utgenome.gwt.utgb.client.db.datatype;
27  
28  import com.google.gwt.event.dom.client.ChangeHandler;
29  import com.google.gwt.event.dom.client.ClickEvent;
30  import com.google.gwt.event.dom.client.ClickHandler;
31  import com.google.gwt.event.dom.client.KeyPressHandler;
32  import com.google.gwt.json.client.JSONBoolean;
33  import com.google.gwt.json.client.JSONValue;
34  import com.google.gwt.user.client.ui.CheckBox;
35  
36  public class BooleanType extends DataTypeBase {
37  
38  	public BooleanType(String name) {
39  		super(name);
40  	}
41  
42  	public InputForm getInputForm() {
43  		return new BooleanTypeForm();
44  	}
45  
46  	public class BooleanTypeForm extends InputForm {
47  		CheckBox form = new CheckBox();
48  
49  		public BooleanTypeForm() {
50  			initWidget(form);
51  		}
52  
53  		public String getUserInput() {
54  			return form.getValue() ? "true" : "false";
55  		}
56  
57  		public JSONValue getJSONValue() {
58  			return JSONBoolean.getInstance(form.getValue());
59  		}
60  
61  		public void setValue(String value) {
62  			form.setValue(value.equals("true"));
63  		}
64  
65  		public void addKeyPressHandler(KeyPressHandler listener) {
66  			form.addKeyPressHandler(listener);
67  		}
68  
69  		public void addChangeHandler(final ChangeHandler listener) {
70  
71  			form.addClickHandler(new ClickHandler() {
72  				public void onClick(ClickEvent event) {
73  					listener.onChange(null);
74  				}
75  			});
76  		}
77  
78  	}
79  
80  	public String toString(JSONValue json) {
81  		JSONBoolean b = json.isBoolean();
82  		if (b == null)
83  			return super.toString(json);
84  		else
85  			return b.booleanValue() ? "true" : "false";
86  	}
87  
88  	public String getTypeName() {
89  		return "boolean";
90  	}
91  
92  }