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[addressbook-war.git] / src / java / org / mxchange / addressbook / beans / features / AddressbookFeatureWebApplicationBean.java
1 /*
2  * Copyright (C) 2016 Roland Haeder
3  *
4  * This program is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU Affero General Public License as
6  * published by the Free Software Foundation, either version 3 of the
7  * License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU Affero General Public License for more details.
13  *
14  * You should have received a copy of the GNU Affero General Public License
15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16  */
17 package org.mxchange.addressbook.beans.features;
18
19 import javax.enterprise.context.ApplicationScoped;
20 import javax.faces.context.FacesContext;
21 import javax.inject.Named;
22 import org.mxchange.pizzaapplication.beans.BasePizzaController;
23
24 /**
25  * A feature bean
26  * <p>
27  * @author Roland Haeder<rhaeder@cho-time.de>
28  */
29 @Named ("featureController")
30 @ApplicationScoped
31 public class AddressbookFeatureWebApplicationBean extends BasePizzaController implements AddressbookFeaturesWebApplicationController {
32
33         /**
34          * Serial number
35          */
36         private static final long serialVersionUID = 64_237_512_690_168_674L;
37
38         @Override
39         public boolean isFeatureEnabled (final String feature) {
40                 // The parameter must be set
41                 if (null == feature) {
42                         // Throw NPE
43                         throw new NullPointerException("feature is null"); //NOI18N
44                 } else if (feature.isEmpty()) {
45                         // Is empty
46                         throw new IllegalArgumentException("feature is empty"); //NOI18N
47                 }
48
49                 // Get context parameter
50                 String contextParameter = FacesContext.getCurrentInstance().getExternalContext().getInitParameter(String.format("is_feature_%s_enabled", feature)); //NOI18N
51
52                 // Is it set?
53                 boolean isEnabled = ((contextParameter instanceof String) && (contextParameter.toLowerCase().equals("true"))); //NOI18N
54
55                 // Return value
56                 return isEnabled;
57         }
58
59 }