ClientImpl


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, Mathieu Vadet.
23  Contributor(s): Romain Rouvoy_______________________________.
24  
25  ====================================================================*/
26  
27  package org.objectweb.ccm.demo1.monolithic;
28  
29  import org.objectweb.ccm.demo1.*;
30  
31  /**
32   * This is the implementation of the OMG IDL3 demo1::Client component type.
33   *
34   * This class inherits from the local CCM_Client interface
35   * generated by the OpenCCM's IDL3 to IDL2 mapping generator.
36   *
37   * This class also implements the java.awt.event.ActionListener to manage
38   * users' interactions on the Swing GUI associated to this component.
39   *
40   * @author <a HREF="mailto:Philippe.Merle@lifl.fr">Philippe Merle</A>
41   *         <a HREF="mailto:Mathieu.Vadet@lifl.fr">Mathieu Vadet</A>
42   */
43  
44  public class ClientImpl
45       extends org.omg.CORBA.LocalObject  
46    implements CCM_Client,
47               org.omg.Components.SessionComponent,
48               java.awt.event.ActionListener  
49  {
50      // ==================================================================
51      //
52      // Internal state.
53      //
54      // ==================================================================
55  
56      /** The name of the component. */ 
57      private String   name_;
58  
59      /** To refer to the GUI frame. */
60      private javax.swing.JFrame   frame_;
61  
62      /** To refer to the user's input field. */
63      private javax.swing.JTextField   text_;
64  
65      /** To refer to the component context. */
66      private CCM_Client_Context the_context_;
67  
68      // ==================================================================
69      //
70      // Constructor.
71      //
72      // ==================================================================
73  
74      /** The default constructor. */
75      public
76      ClientImpl()
77      {
78      }
79  
80      // ==================================================================
81      //
82      // Internal methods.
83      //
84      // ==================================================================
85  
86      // ==================================================================
87      //
88      // Public methods.
89      //
90      // ==================================================================
91  
92      // ==================================================================
93      //
94      // Methods for OMG IDL Components::EnterpriseComponent
95      //
96      // ==================================================================
97  
98      /**
99       * Complete the component configuration.
100      *
101      * @exception org.omg.Components.InvalidConfiguration
102      *            Thrown if the configuration is invalid.
103      */
104     public void
105     configuration_complete()
106     throws org.omg.Components.InvalidConfiguration
107     {
108         // Checks if the configuration is completed.
109     if(name_ == null)
110             throw new org.omg.Components.InvalidConfiguration();
111 
112     // Check if the connection to the server is set.
113     if(the_context_.get_connection_to_server() == null)
114             throw new org.omg.Components.InvalidConfiguration();
115 
116         // Instantiating the GUI.
117                 
118         // Creates a Swing Frame.
119         frame_ = new javax.swing.JFrame  (name_ + "'s Client GUI");
120         // Sets its size.
121         frame_.setSize(400, 300);
122 
123         // Creates a text field for user's inputs.
124         text_ = new javax.swing.JTextField  ("", 1);
125 
126         // Creates a button to invoke the connected server component.
127         javax.swing.JButton   button = new javax.swing.JButton  ("Print Text");
128         button.addActionListener(this);
129 
130         // Constructs and shows the GUI.
131         javax.swing.JPanel   panel = new javax.swing.JPanel  (
132                                            new java.awt.BorderLayout  ());
133         frame_.getContentPane().add(panel);
134         panel.add(new javax.swing.JScrollPane  (text_),
135                   java.awt.BorderLayout.CENTER);
136         panel.add(button, java.awt.BorderLayout.SOUTH);
137         frame_.pack();
138         frame_.show();
139     }
140         
141     // ==================================================================
142     //
143     // Methods for the OMG IDL org.omg.Components.SessionComponent
144     //
145     // ==================================================================
146 
147     /**
148      * Set the session component context.
149      *
150      * @param context The session component context.
151      *
152      * @throw org.omg.Components.CCMException For any problems.
153      */
154     public void
155     set_session_context(org.omg.Components.SessionContext context)
156     throws org.omg.Components.CCMException
157     {
158         the_context_ = (CCM_Client_Context)context;
159     }
160 
161     /**
162      * Container callback to signal that the component is activated.
163      *
164      * @throw org.omg.Components.CCMException For any problems.
165      */
166     public void
167     ccm_activate()
168     throws org.omg.Components.CCMException
169     {
170         // Nothing to do currently.
171     }               
172 
173     /**
174      * Container callback to signal that the component is activated.
175      *
176      * @throw org.omg.Components.CCMException For any problems.
177      */
178     public void
179     ccm_passivate()
180     throws org.omg.Components.CCMException
181     {
182         // Nothing to do currently.
183     }               
184 
185     /**
186      * Container callback to signal that the component is removed.
187      *
188      * @throw org.omg.Components.CCMException For any problems.
189      */
190     public void
191     ccm_remove() 
192     throws org.omg.Components.CCMException
193     {
194         // Release the associated frame.
195         frame_.dispose();
196     frame_ = null;
197     }               
198 
199     // ==================================================================
200     //
201     // Methods for the OMG IDL demo1::CCM_Client
202     //
203     // ==================================================================
204 
205     /**
206      * The mutator method for the attribute name.
207      *
208      * @param n The name.
209      */
210     public void
211     the_name(String   n)
212     {
213         name_ = n;
214 
215         if (frame_ != null)
216             frame_.setTitle(name_ + "'s Client GUI");
217     }
218 
219     /**
220      * The accessor method for the attribute name.
221      *
222      * @return The name.
223      */
224     public String  
225     the_name()
226     {
227         return name_;
228     }
229 
230     // ==================================================================
231     //
232     // Methods for interface java.awt.event.ActionListener
233     //
234     // ==================================================================
235 
236     /**
237      * When the button is selectionned.
238      *
239      * @param e The associate ActionEvent.
240      */
241     public void
242     actionPerformed(java.awt.event.ActionEvent   e)
243     {
244         // Obtain the object reference associated to the
245         // 'to_server' receptacle.
246         Display to_server = the_context_.get_connection_to_server();
247 
248     // Check if the connection is available.
249     if(to_server == null)
250     {
251         System.err.println("The demo1::Client::to_server receptacle is not set!");
252         return;
253     }
254 
255         // Calls the print service.
256         to_server.print(name_ + ":" + text_.getText());
257     }
258 }
259
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