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, Christophe Demarey.
24  
25  ====================================================================*/
26  
27  package org.objectweb.ccm.demo1.cif;
28  
29  import org.objectweb.ccm.demo1.Display;
30  
31  /**
32   * This is the implementation of the OMG IDL3 demo1::Client component type.
33   *
34   * This class inherits from the CIF generated skeleton class defined
35   * as ClientSessionComposition::ComponentImpl.
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   *         <a HREF="mailto:Romain.Rouvoy@lifl.fr">Romain Rouvoy</A>
43   *         <a HREF="mailto:Christophe.Demarey@lifl.fr">Christophe Demarey</A>
44   */
45  
46  public class ClientImpl
47       extends org.objectweb.ccm.demo1.ClientSessionComposition.ComponentImpl
48    implements 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      // ==================================================================
66      //
67      // Constructor.
68      //
69      // ==================================================================
70  
71      /** The default constructor. */
72      public
73      ClientImpl()
74      {
75      }
76  
77      // ==================================================================
78      //
79      // Internal methods.
80      //
81      // ==================================================================
82  
83      // ==================================================================
84      //
85      // Public methods.
86      //
87      // ==================================================================
88  
89      // ==================================================================
90      //
91      // Methods for OMG IDL Components::EnterpriseComponent
92      //
93      // ==================================================================
94  
95      /**
96       * Complete the component configuration.
97       *
98       * @exception org.omg.Components.InvalidConfiguration
99       *            Thrown if the configuration is invalid.
100      */
101     public void
102     configuration_complete()
103     throws org.omg.Components.InvalidConfiguration
104     {
105         // Checks if the configuration is completed.
106         if(name_ == null)
107             throw new org.omg.Components.InvalidConfiguration();
108 
109         // Check if the connection to the server is set.
110         if(get_context().get_connection_to_server() == null)
111             throw new org.omg.Components.InvalidConfiguration();
112 
113         // Instantiating the GUI.
114 
115         // Creates a Swing Frame.
116         frame_ = new javax.swing.JFrame  (name_ + "'s Client GUI");
117         // Sets its size.
118         frame_.setSize(400, 300);
119 
120         // Creates a text field for user's inputs.
121         text_ = new javax.swing.JTextField  ("", 1);
122 
123         // Creates a button to invoke the connected server component.
124         javax.swing.JButton   button = new javax.swing.JButton  ("Print Text");
125         button.addActionListener(this);
126 
127         // Constructs and shows the GUI.
128         javax.swing.JPanel   panel = new javax.swing.JPanel  (
129                                            new java.awt.BorderLayout  ());
130         frame_.getContentPane().add(panel);
131         panel.add(new javax.swing.JScrollPane  (text_),
132                   java.awt.BorderLayout.CENTER);
133         panel.add(button, java.awt.BorderLayout.SOUTH);
134         frame_.pack();
135         frame_.show();
136     }
137 
138     // ==================================================================
139     //
140     // Methods for the OMG IDL org.omg.Components.SessionComponent
141     //
142     // ==================================================================
143 
144     /**
145      * Container callback to signal that the component is removed.
146      *
147      * @throw org.omg.Components.CCMException For any problems.
148      */
149     public void
150     ccm_remove()
151     throws org.omg.Components.CCMException
152     {
153         // Release the associated frame.
154         frame_.dispose();
155         frame_ = null;
156     }
157 
158     // ==================================================================
159     //
160     // Methods for the OMG IDL demo1::CCM_Client_Executor
161     //
162     // ==================================================================
163 
164     /**
165      * The mutator method for the attribute name.
166      *
167      * @param n The name.
168      */
169     public void
170     the_name(String   n)
171     {
172         name_ = n;
173 
174         if (frame_ != null)
175             frame_.setTitle(name_ + "'s Client GUI");
176     }
177 
178     /**
179      * The accessor method for the attribute name.
180      *
181      * @return The name.
182      */
183     public String  
184     the_name()
185     {
186         return name_;
187     }
188 
189     // ==================================================================
190     //
191     // Methods for interface java.awt.event.ActionListener
192     //
193     // ==================================================================
194 
195     /**
196      * When the button is selectionned.
197      *
198      * @param e The associate ActionEvent.
199      */
200     public void
201     actionPerformed(java.awt.event.ActionEvent   e)
202     {
203         // Obtain the object reference associated to the
204         // 'to_server' receptacle.
205         Display to_server = get_context().get_connection_to_server();
206 
207         // Check if the connection is available.
208         if(to_server == null)
209         {
210             System.err.println("The demo1::Client::to_server receptacle is not set!");
211             return;
212         }
213 
214         // Calls the print service.
215         to_server.print(name_ + ":" + text_.getText());
216     }
217 }
218
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