1 /*
2 * Scope: a generic MVC framework.
3 * Copyright (c) 2000-2002, The Scope team
4 * All rights reserved.
5 *
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * Neither the name "Scope" nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
27 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
28 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
29 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 *
35 *
36 * $Id: FormController.java,v 1.3 2002/09/05 15:41:48 ludovicc Exp $
37 */
38 package samples.servlet.xml.login;
39
40
41 import java.util.HashMap;
42 import org.scopemvc.controller.basic.BasicController;
43 import org.scopemvc.controller.basic.ViewContext;
44 import org.scopemvc.controller.servlet.ServletContext;
45 import org.scopemvc.core.Control;
46 import org.scopemvc.core.ControlException;
47 import org.scopemvc.view.servlet.ServletView;
48
49 /***
50 * @author <A HREF="mailto:smeyfroi@users.sourceforge.net">Steve Meyfroidt</A>
51 * @created 05 September 2002
52 * @version $Revision: 1.3 $ $Date: 2002/09/05 15:41:48 $
53 */
54 public class FormController extends BasicController {
55
56 /***
57 * TODO: describe of the Field
58 */
59 public final static String GOT_NAME = "Enter";
60 /***
61 * TODO: describe of the Field
62 */
63 public final static String SHOW_FORM = "Show";
64
65
66 /***
67 * Constructor for the FormController object
68 */
69 public FormController() {
70 setModel(new FormModel());
71
72 ServletView viewContainer = new ServletView();
73 viewContainer.addPage(new FormView1());
74 viewContainer.addPage(new FormView2());
75 setView(viewContainer);
76 }
77
78
79 /***
80 * If user interacts with a view parented by this Controller but there's no
81 * Control in the request then the Controller is started with this method:
82 * this is the default behaviour in the absence of a Control.
83 */
84 public void startup() {
85 doShowForm();
86 }
87
88
89 /***
90 * Respond to SHOW_FORM and GOT_NAME.
91 *
92 * @param inControl TODO: Describe the Parameter
93 * @throws ControlException TODO: Describe the Exception
94 */
95 protected void doHandleControl(Control inControl) throws ControlException {
96 if (inControl.matchesID(SHOW_FORM)) {
97 doShowForm();
98 } else if (inControl.matchesID(GOT_NAME)) {
99 doGotName();
100 }
101 }
102
103
104 /***
105 * On SHOW_FORM, switch over to the first View (which will bind to this
106 * Controller's model) and show it.
107 */
108 protected void doShowForm() {
109 if (ensureLoggedIn()) {
110 ((ServletView) getView()).setVisible(FormView1.ID);
111 showView();
112 }
113 }
114
115
116 /***
117 * On GOT_NAME, switch over to the second View (which will bind to this
118 * Controller's model) and show it.
119 */
120 protected void doGotName() {
121 if (ensureLoggedIn()) {
122 ((ServletView) getView()).setVisible(FormView2.ID);
123 showView();
124 }
125 }
126
127
128 private boolean ensureLoggedIn() {
129 if (!LoginManager.isLoggedIn()) {
130 // Pass a request to login up chain of command
131 // ... the controller that does the login will redirect back here
132 // ... on successful login
133 handleControl(new Control(LoginControls.REQUEST_LOGIN));
134 return false;
135 } else {
136 return true;
137 }
138 }
139 }
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