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): Areski Flissi.
23  Contributor(s): 
24  
25  ====================================================================*/
26  
27  package org.objectweb.ccm.chat.cif;
28  
29  import org.objectweb.ccm.chat.*;
30  
31  /**
32   * This is the implementation of the OMG IDL3 chat::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:Areski.Flissi@lifl.fr">Areski Flissi</A>
41   */
42  public class ClientImpl
43       extends org.objectweb.ccm.chat.ClientSessionComposition.ComponentImpl
44    implements java.awt.event.ActionListener  
45  {
46      // ==================================================================
47      //
48      // Internal state.
49      //
50      // ==================================================================
51  
52      /** The name of the component. */
53      private String   name_;
54      
55      /** To refer to the GUI frame. */
56      private java.awt.Frame   frame_;
57      /** To refer to the GUI user input field. */
58      private java.awt.TextField   text_;
59      /** To refer to the GUI user output area. */
60      private java.awt.TextArea   textArea_;
61      
62      public static final java.awt.Color   white_ = java.awt.Color.white;
63      
64      // ==================================================================
65      //
66      // Constructor.
67      //
68      // ==================================================================
69  
70      /** The default constructor. */
71      public
72      ClientImpl()
73      {
74      }
75  
76      // ==================================================================
77      //
78      // Internal methods.
79      //
80      // ==================================================================
81  
82      // ==================================================================
83      //
84      // Public methods.
85      //
86      // ==================================================================
87  
88      // ==================================================================
89      //
90      // Methods for OMG IDL Components::EnterpriseComponent
91      //
92      // ==================================================================
93  
94      /**
95       * Complete the component configuration.
96       *
97       * @exception org.omg.Components.InvalidConfiguration
98       *            Thrown if the configuration is invalid.
99       */
100     public void
101     configuration_complete()
102     throws org.omg.Components.InvalidConfiguration
103     {
104     // Checks if the configuration is completed.
105     if(name_ == null)
106         throw new org.omg.Components.InvalidConfiguration();
107 
108     // Check if the connection to the server is set.
109     if(get_context().get_connection_the_service() == null)
110         throw new org.omg.Components.InvalidConfiguration();
111 
112     //Instantiating the GUI.
113     // Creates a AWT Frame.
114     frame_ = new java.awt.Frame  (name_ + "'s Chat GUI");
115         
116     // Creates a text area for displaying inputs.
117     textArea_ = new java.awt.TextArea  ();
118     textArea_.setEditable(false);
119     textArea_.setBackground(white_);
120          
121          
122     //Creates a text field for user's inputs.
123     text_ = new java.awt.TextField  ("", 1);
124     // Creates a button to invoke the connected server component.
125     java.awt.Button   button = new java.awt.Button  ("Print Text");
126     button.addActionListener(this);
127     // Constructs and shows the GUI.
128         java.awt.Panel   panel = new java.awt.Panel  (
129                                 new java.awt.BorderLayout  ()
130                                     );    
131     System.out.println("___________________________");                                         
132     frame_.setLayout ( new java.awt.BorderLayout  () ) ;
133     frame_.add(panel);
134                  
135     panel.add(textArea_,java.awt.BorderLayout.NORTH); 
136     panel.add(text_,java.awt.BorderLayout.CENTER);
137     panel.add(button,java.awt.BorderLayout.SOUTH);  
138     
139     frame_.setSize(400,300);
140     frame_.pack();
141     frame_.show();
142     
143     }
144 
145     // ==================================================================
146     //
147     // Methods for the OMG IDL org.omg.Components.SessionComponent
148     //
149     // ==================================================================
150 
151     /**
152      * Container callback to signal that the component is removed.
153      *
154      * @throw org.omg.Components.CCMException For any problems.
155      */
156     public void
157     ccm_remove()
158     throws org.omg.Components.CCMException
159     {
160          // Release the associated frame.
161         if(frame_!=null)       
162             frame_.dispose();
163         frame_ = null;
164     }
165 
166     // ==================================================================
167     //
168     // Methods for OMG IDL chat::CCM_NamedComponent_Executor
169     //
170     // ==================================================================
171 
172     /**
173      * The mutator method for the attribute name.
174      *
175      * @param n The name.
176      */
177     public void
178     name(String   n)
179     {
180         name_ = n;
181 
182         if (frame_ != null)
183            frame_.setTitle(name_ + "'s Client GUI");
184     }
185 
186     /**
187      * The accessor method for the attribute name.
188      *
189      * @return The name.
190      */
191     public String  
192     name()
193     {
194         return name_;
195     }
196 
197 
198 
199     // ==================================================================
200     //
201     // Methods for interface java.awt.event.ActionListener
202     //
203     // ==================================================================
204 
205     /**
206      * When the button is selectionned.
207      *
208      * @param e The associate ActionEvent.
209      */
210     public void
211     actionPerformed(java.awt.event.ActionEvent   e)
212     {
213         // Obtain the object reference associated to the
214         // 'the_service' receptacle.
215         Service service = get_context().get_connection_the_service();
216 
217         // Check if the connection is available.
218         if(service == null)
219         {
220             System.err.println("The chat::Client::the_service receptacle is not set!");
221             return;
222         }
223  
224         // Calls the display service.
225         service.display(name_ + ":" + text_.getText());
226         
227         // Reset entered text
228         text_.setText(""); 
229         
230     }
231     
232     
233     
234     // ==================================================================
235     //
236     // Methods for OMG IDL chat::CCM_TextEventConsumer
237     //
238     // ==================================================================
239 
240     /**
241      * To receive chat::Event events published by chat::Server components.
242      *
243      * @param event The received event.
244      */
245     public void
246     push(TextEvent event)
247     {
248         // Put the text into the text area.
249         textArea_.append(event.text + "\n");
250     }
251     
252 }
253
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