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1
38
39 import java.awt.*;
40 import java.awt.event.*;
41 import java.io.*;
42 import java.beans.*;
43 import javax.activation.*;
44 import javax.mail.*;
45 import javax.swing.JPanel  ;
46
47
48
54
55 public class MultipartViewer extends JPanel implements CommandObject {
56
57 protected DataHandler dh = null;
58 protected String verb = null;
59
60 public MultipartViewer() {
61 super(new GridBagLayout());
62 }
63
64
65 public void setCommandContext(String verb, DataHandler dh) throws IOException {
66 this.verb = verb;
67 this.dh = dh;
68
69 Object content = dh.getContent();
71 if (content instanceof Multipart) {
72 setupDisplay((Multipart)content);
73 } else {
74 setupErrorDisplay(content);
75 }
76 }
77
78 protected void setupDisplay(Multipart mp) {
79
82 GridBagConstraints gc = new GridBagConstraints();
83 gc.gridheight = GridBagConstraints.REMAINDER;
84 gc.fill = GridBagConstraints.BOTH;
85 gc.weightx = 1.0;
86 gc.weighty = 1.0;
87
88 try {
90 BodyPart bp = mp.getBodyPart(0);
91 Component comp = getComponent(bp);
92 add(comp, gc);
93
94 } catch (MessagingException me) {
95 add(new Label(me.toString()), gc);
96 }
97
98 try {
100 int count = mp.getCount();
101
102 gc.gridwidth = GridBagConstraints.REMAINDER;
104 gc.gridheight = 1;
105 gc.fill = GridBagConstraints.NONE;
106 gc.anchor = GridBagConstraints.NORTH;
107 gc.weightx = 0.0;
108 gc.weighty = 0.0;
109 gc.insets = new Insets(4,4,4,4);
110
111 for(int i = 1; i < count; i++) { BodyPart curr = mp.getBodyPart(i);
114 String label = null;
115 if (label == null) label = curr.getFileName();
116 if (label == null) label = curr.getDescription();
117 if (label == null) label = curr.getContentType();
118
119 Button but = new Button(label);
120 but.addActionListener( new AttachmentViewer(curr));
121 add(but, gc);
122 }
123
124
125 } catch(MessagingException me2) {
126 me2.printStackTrace();
127 }
128
129 }
130
131 protected Component getComponent(BodyPart bp) {
132
133 try {
134 DataHandler dh = bp.getDataHandler();
135 CommandInfo ci = dh.getCommand("view");
136 if (ci == null) {
137 throw new MessagingException(
138 "view command failed on: " +
139 bp.getContentType());
140 }
141
142 Object bean = dh.getBean(ci);
143
144 if (bean instanceof Component) {
145 return (Component)bean;
146 } else {
147 if (bean == null)
148 throw new MessagingException(
149 "bean is null, class " + ci.getCommandClass() +
150 " , command " + ci.getCommandName());
151 else
152 throw new MessagingException(
153 "bean is not a awt.Component" +
154 bean.getClass().toString());
155 }
156 }
157 catch (MessagingException me) {
158 return new Label(me.toString());
159 }
160 }
161
162
163
164 protected void setupErrorDisplay(Object content) {
165 String error;
166
167 if (content == null)
168 error = "Content is null";
169 else
170 error = "Object not of type Multipart, content class = " +
171 content.getClass().toString();
172
173 System.out.println(error);
174 Label lab = new Label(error);
175 add(lab);
176 }
177
178 class AttachmentViewer implements ActionListener {
179
180 BodyPart bp = null;
181
182 public AttachmentViewer(BodyPart part) {
183 bp = part;
184 }
185
186 public void actionPerformed(ActionEvent e) {
187 ComponentFrame f = new ComponentFrame(
188 getComponent(bp), "Attachment");
189 f.pack();
190 f.show();
191 }
192 }
193
194 }
195 |
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