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): Christophe Demarey.
24  
25  ====================================================================*/
26  
27  package org.objectweb.ccm.demo3.cif;
28  
29  import org.objectweb.ccm.demo3.*;
30  
31  /**
32   * This is the implementation of the OMG IDL3 demo3::Client component type.
33   *
34   * This class inherits from the skeleton
35   * generated by the OpenCCM's CIF to Java 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   *         <a HREF="mailto:Christophe.Demarey@lifl.fr">Christophe Demarey</A>
43   */
44  public class ClientImpl
45       extends org.objectweb.ccm.demo3.ClientSessionComposition.ComponentImpl
46    implements java.awt.event.ActionListener  
47  {
48      // ==================================================================
49      //
50      // Internal state.
51      //
52      // ==================================================================
53  
54      /** The name of the component. */
55      private String   name_;
56  
57      /** To refer to the GUI frame. */
58      private javax.swing.JFrame   frame_;
59  
60      /** To refer to the GUI user input field. */
61      private javax.swing.JTextField   text_;
62  
63      // ==================================================================
64      //
65      // Constructor.
66      //
67      // ==================================================================
68  
69      /** The default constructor. */
70      public
71      ClientImpl()
72      {
73      }
74  
75      // ==================================================================
76      //
77      // Internal methods.
78      //
79      // ==================================================================
80  
81      // ==================================================================
82      //
83      // Public methods.
84      //
85      // ==================================================================
86  
87      // ==================================================================
88      //
89      // Methods for OMG IDL Components::EnterpriseComponent
90      //
91      // ==================================================================
92  
93      /**
94       * Complete the component configuration.
95       *
96       * @exception org.omg.Components.InvalidConfiguration
97       *            Thrown if the configuration is invalid.
98       */
99      public void
100     configuration_complete()
101     throws org.omg.Components.InvalidConfiguration
102     {
103         // Checks if the configuration is completed.
104         if(name_ == null)
105             throw new org.omg.Components.InvalidConfiguration();
106 
107         // Check if the connection to the server is set.
108         if(get_context().get_connection_the_service() == null)
109             throw new org.omg.Components.InvalidConfiguration();
110 
111         // Instantiating the GUI.
112 
113         // Creates a Swing Frame.
114         frame_ = new javax.swing.JFrame  (name_ + "'s Client GUI");
115         // Sets its size.
116         frame_.setSize(400, 300);
117 
118         // Creates a text field for user's inputs.
119         text_ = new javax.swing.JTextField  ("", 1);
120 
121         // Creates a button to invoke the connected server component.
122         javax.swing.JButton   button = new javax.swing.JButton  ("Print Text");
123         button.addActionListener(this);
124 
125         // Constructs and shows the GUI.
126         javax.swing.JPanel   panel = new javax.swing.JPanel  (
127                                        new java.awt.BorderLayout  ()
128                                    );
129         frame_.getContentPane().add(panel);
130         panel.add(new javax.swing.JScrollPane  (text_),
131                   java.awt.BorderLayout.CENTER);
132         panel.add(button, java.awt.BorderLayout.SOUTH);
133         frame_.pack();
134         frame_.show();
135     }
136 
137     // ==================================================================
138     //
139     // Methods for the OMG IDL org.omg.Components.SessionComponent
140     //
141     // ==================================================================
142 
143     /**
144      * Container callback to signal that the component is removed.
145      *
146      * @throw org.omg.Components.CCMException For any problems.
147      */
148     public void
149     ccm_remove()
150     throws org.omg.Components.CCMException
151     {
152         // Release the associated frame.
153         frame_.dispose();
154         frame_ = null;
155     }
156 
157     // ==================================================================
158     //
159     // Methods for OMG IDL demo3::CCM_NamedComponent_Executor
160     //
161     // ==================================================================
162 
163     /**
164      * The mutator method for the attribute name.
165      *
166      * @param n The name.
167      */
168     public void
169     name(String   n)
170     {
171         name_ = n;
172 
173         if (frame_ != null)
174             frame_.setTitle(name_ + "'s Client GUI");
175     }
176 
177     /**
178      * The accessor method for the attribute name.
179      *
180      * @return The name.
181      */
182     public String  
183     name()
184     {
185         return name_;
186     }
187 
188     // ==================================================================
189     //
190     // Methods for interface java.awt.event.ActionListener
191     //
192     // ==================================================================
193 
194     /**
195      * When the button is selectionned.
196      *
197      * @param e The associate ActionEvent.
198      */
199     public void
200     actionPerformed(java.awt.event.ActionEvent   e)
201     {
202         // Obtain the object reference associated to the
203         // 'the_service' receptacle.
204         Service service = get_context().get_connection_the_service();
205 
206         // Check if the connection is available.
207         if(service == null)
208         {
209             System.err.println("The demo3::Client::the_service receptacle is not set!");
210             return;
211         }
212 
213         // Calls the display service.
214         service.display(name_ + ":" + text_.getText());
215     }
216 }
217
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