|
1
38
44
45 import java.awt.*;
46 import java.awt.event.*;
47 import javax.mail.*;
48 import javax.activation.*;
49 import java.util.Date  ;
50 import java.io.IOException ;
51 import javax.swing.JPanel ;
52
53
58
59 public class MessageViewer extends JPanel implements CommandObject {
60
61 Message displayed = null;
62 DataHandler dataHandler = null;
63 String verb = null;
64 Component mainbody;
65 TextArea headers;
66
67 public MessageViewer() {
68 this(null);
69 }
70
71 public MessageViewer(Message what) {
72 super(new GridBagLayout());
74
75 addToolbar();
77
78 GridBagConstraints gb = new GridBagConstraints();
79 gb.gridwidth = GridBagConstraints.REMAINDER;
80 gb.fill = GridBagConstraints.BOTH;
81 gb.weightx = 1.0;
82 gb.weighty = 0.0;
83
84 headers = new TextArea("", 4, 80, TextArea.SCROLLBARS_NONE);
86 headers.setEditable(false);
87 add(headers, gb);
88
89 setMessage(what);
91 }
92
93
96 public void setMessage(Message what) {
97 displayed = what;
98
99 if (mainbody != null)
100 remove(mainbody);
101
102 if (what != null) {
103 loadHeaders();
104 mainbody = getBodyComponent();
105 } else {
106 headers.setText("");
107 TextArea dummy = new TextArea("", 24, 80, TextArea.SCROLLBARS_NONE);
108 dummy.setEditable(false);
109 mainbody = dummy;
110 }
111
112 GridBagConstraints gb = new GridBagConstraints();
114 gb.gridwidth = GridBagConstraints.REMAINDER;
115 gb.fill = GridBagConstraints.BOTH;
116 gb.weightx = 1.0;
117 gb.weighty = 1.0;
118 add(mainbody, gb);
119
120 invalidate();
121 validate();
122 }
123
124 protected void addToolbar() {
125 GridBagConstraints gb = new GridBagConstraints();
126 gb.gridheight = 1;
127 gb.gridwidth = 1;
128 gb.fill = GridBagConstraints.NONE;
129 gb.anchor = GridBagConstraints.WEST;
130 gb.weightx = 0.0;
131 gb.weighty = 0.0;
132 gb.insets = new Insets(4,4,4,4);
133
134 gb.gridwidth = GridBagConstraints.REMAINDER; Button b = new Button("Structure");
137 b.addActionListener( new StructureAction());
138 add(b, gb);
139 }
140
141 protected void loadHeaders() {
142 StringBuffer sb = new StringBuffer ();
144
145 sb.append("Date: ");
147 try {
148 Date duh = displayed.getSentDate();
149 if (duh != null) {
150 sb.append(duh.toString());
151 } else {
152 sb.append("Unknown");
153 }
154
155 sb.append("\n");
156
157 sb.append("From: ");
159 Address[] adds = displayed.getFrom();
160 if (adds != null && adds.length > 0) {
161 sb.append(adds[0].toString());
162 }
163 sb.append("\n");
164
165 sb.append("To: ");
167 adds = displayed.getRecipients(Message.RecipientType.TO);
168 if (adds != null && adds.length > 0) {
169 sb.append(adds[0].toString());
170 }
171 sb.append("\n");
172
173 sb.append("Subject: ");
175 sb.append(displayed.getSubject());
176
177 headers.setText(sb.toString());
178 } catch (MessagingException me) {
179 headers.setText("");
180 }
181 }
182
183 protected Component getBodyComponent() {
184 try {
188 DataHandler dh = displayed.getDataHandler();
189 CommandInfo ci = dh.getCommand("view");
190 if (ci == null) {
191 throw new MessagingException("view command failed on: " +
192 displayed.getContentType());
193 }
194
195 Object bean = dh.getBean(ci);
196 if (bean instanceof Component) {
197 return (Component)bean;
198 } else {
199 throw new MessagingException("bean is not a component " +
200 bean.getClass().toString());
201 }
202 } catch (MessagingException me) {
203 return new Label(me.toString());
204 }
205 }
206
207
211 public void setCommandContext(String verb,
212 DataHandler dh) throws IOException {
213 this.verb = verb;
214 dataHandler = dh;
215
216 Object o = dh.getContent();
217 if (o instanceof Message) {
218 setMessage((Message)o);
219 }
220 else {
221 System.out.println(
222 "MessageViewer - content not a Message object, " + o);
223 if (o != null){
224 System.out.println(o.getClass().toString());
225 }
226 }
227 }
228
229
230 class StructureAction implements ActionListener {
231 StringBuffer sb;
232
233 public void actionPerformed(ActionEvent e) {
234 System.out.println("\n\nMessage Structure");
235 dumpPart("", displayed);
236 }
237
238 protected void dumpPart(String prefix, Part p) {
239 try {
240 System.out.println(prefix + "----------------");
241 System.out.println(prefix +
242 "Content-Type: " + p.getContentType());
243 System.out.println(prefix +
244 "Class: " + p.getClass().toString());
245
246 Object o = p.getContent();
247 if (o == null) {
248 System.out.println(prefix + "Content: is null");
249 } else {
250 System.out.println(prefix +
251 "Content: " + o.getClass().toString());
252 }
253
254 if (o instanceof Multipart) {
255 String newpref = prefix + "\t";
256 Multipart mp = (Multipart)o;
257 int count = mp.getCount();
258 for (int i = 0; i < count; i++) {
259 dumpPart(newpref, mp.getBodyPart(i));
260 }
261 }
262 } catch (MessagingException e) {
263 e.printStackTrace();
264 } catch (IOException ioex) {
265 System.out.println("Cannot get content" + ioex.getMessage());
266 }
267 }
268 }
269 }
270 |
Popular Tags |
Java API By Example, From Geeks To Geeks.