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Java > Open Source Codes > DiningPhilosophers > monolithic > ObserverImpl


1 /*====================================================================
2
3 OpenCCM: The Open CORBA Component Model Platform
4 Copyright (C) 2000-2002 USTL - LIFL - GOAL
5 Contact: openccm-team@objectweb.org
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or any later version.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with this library; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 USA
21
22 Initial developer(s): Philippe Merle, Sylvain Leblanc.
23 Contributor(s): Christophe Demarey.
24
25 ====================================================================*/
26
27 package DiningPhilosophers.monolithic;
28
29 import DiningPhilosophers.*;
30
31 /**
32  * This is the implementation of the OMG IDL3 DiningPhilosophers::Observer
33  * component type.
34  *
35  * The info event sink is directly implemented
36  * by the component class by implementing the
37  * DiningPhilosophers::StatusInfoConsumer interface.
38  *
39  * This class inherits from the local CCM_Observer interface
40  * generated by the OpenCCM's IDL3 to IDL2 mapping generator.
41  *
42  * @author <a HREF="mailto:Philippe.Merle@lifl.fr">Philippe Merle</a>
43  * @author <a HREF="mailto:Sylvain.Leblanc@lifl.fr">Sylvain Leblanc</a>
44  * @author <a HREF="mailto:Christophe.Demarey@lifl.fr">Christophe Demarey</a>
45  *
46  * @version 2.0
47  */
48
49 public class ObserverImpl
50      extends org.omg.CORBA.LocalObject JavaDoc
51   implements CCM_Observer,
52              CCM_StatusInfoConsumer,
53              org.omg.Components.SessionComponent
54 {
55     // ==================================================================
56 //
57 // Internal state.
58 //
59 // ==================================================================
60
61     /** The CCM Observer context. */
62     private CCM_Observer_Context the_context_;
63
64     /** Stores philosopher's states. */
65     private java.util.Hashtable JavaDoc philosopherStates_;
66
67     /** The main GUI. */
68     private javax.swing.JFrame JavaDoc frame_;
69
70     /** The philosopher's panels. */
71     private java.util.Hashtable JavaDoc philosopherPanels_;
72
73     /** The box panel used to store philosopher's panel GUI. */
74     private javax.swing.Box JavaDoc box_;
75
76     // ==================================================================
77 //
78 // Constructor.
79 //
80 // ==================================================================
81
82     /** The default constructor. */
83     public
84     ObserverImpl()
85     {
86         philosopherStates_ = new java.util.Hashtable JavaDoc();
87         philosopherPanels_ = new java.util.Hashtable JavaDoc();
88     }
89
90     // ==================================================================
91 //
92 // Internal methods.
93 //
94 // ==================================================================
95
96     // ==================================================================
97 //
98 // Public methods.
99 //
100 // ==================================================================
101
102     // ==================================================================
103 //
104 // Methods for OMG IDL Components::EnterpriseComponent
105 //
106 // ==================================================================
107
108     /**
109      * Complete the component configuration and launch the
110      * observer GUI.
111      *
112      * @exception org.omg.Components.InvalidConfiguration
113      * Thrown if the configuration is invalid.
114      */
115     public void
116     configuration_complete()
117     throws org.omg.Components.InvalidConfiguration
118     {
119         // Instantiating the GUI.
120
121         // Creates a Swing Frame.
122 frame_ = new javax.swing.JFrame JavaDoc("The Observer's GUI");
123         // Sets its size.
124 frame_.setSize(400, 300);
125
126         // Constructs and shows the GUI.
127 box_ = javax.swing.Box.createVerticalBox();
128         frame_.getContentPane().add(box_);
129         frame_.pack();
130         frame_.show();
131     }
132
133     // ==================================================================
134 //
135 // Methods for the OMG IDL org.omg.Components.SessionComponent
136 //
137 // ==================================================================
138
139     /**
140      * Setting the session component context.
141      *
142      * @param context The session component context.
143      */
144     public void
145     set_session_context(org.omg.Components.SessionContext context)
146     throws org.omg.Components.CCMException
147     {
148         the_context_ = (CCM_Observer_Context)context;
149     }
150
151     /**
152      * Container callback to signal that the component is activated.
153      *
154      * @throw org.omg.Components.CCMException For any problems.
155      */
156     public void
157     ccm_activate()
158     throws org.omg.Components.CCMException
159     {
160         // Nothing to do currently.
161 }
162
163     /**
164      * Container callback to signal that the component is activated.
165      *
166      * @throw org.omg.Components.CCMException For any problems.
167      */
168     public void
169     ccm_passivate()
170     throws org.omg.Components.CCMException
171     {
172         // Nothing to do currently.
173 }
174
175     /**
176      * Container callback to signal that the component is removed.
177      *
178      * @throw org.omg.Components.CCMException For any problems.
179      */
180     public void
181     ccm_remove()
182     throws org.omg.Components.CCMException
183     {
184         // Release the associated frame.
185 frame_.dispose();
186         frame_ = null;
187     }
188
189     // ==================================================================
190 //
191 // Methods for OMG IDL CCM_Observer
192 //
193 // ==================================================================
194
195     /**
196      * To receive dinner::StatusInfo events published
197      * by Philosopher components.
198      */
199     public void
200     push_info(StatusInfo event)
201     {
202         push(event);
203     }
204
205     // ==================================================================
206 //
207 // Methods for OMG IDL dinner::StatusInfoConsumer
208 //
209 // ==================================================================
210
211     /**
212      * To receive DiningPhilosophers::StatusInfo events.
213      *
214      * Update the observer GUI with received status informations.
215      */
216     public synchronized void
217     push(StatusInfo event)
218     {
219         if (! philosopherPanels_.containsKey(event.name)) {
220             PhilosopherPanel panel = new PhilosopherPanel(event);
221             box_.add(panel);
222             philosopherPanels_.put(event.name, panel);
223             frame_.pack();
224             frame_.show();
225         } else {
226             PhilosopherPanel panel;
227             panel = (PhilosopherPanel)philosopherPanels_.get(event.name);
228             panel.updatePanel(event);
229         }
230     }
231 }
232
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