1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
/* *************************************************************************
IT Mill Toolkit
Development of Browser User Interfaces Made Easy
Copyright (C) 2000-2006 IT Mill Ltd
*************************************************************************
This product is distributed under commercial license that can be found
from the product package on license/license.txt. Use of this product might
require purchasing a commercial license from IT Mill Ltd. For guidelines
on usage, see license/licensing-guidelines.html
*************************************************************************
For more information, contact:
IT Mill Ltd phone: +358 2 4802 7180
Ruukinkatu 2-4 fax: +358 2 4802 7181
20540, Turku email: info@itmill.com
Finland company www: www.itmill.com
Primary source for information and releases: www.itmill.com
********************************************************************** */
package com.itmill.toolkit.demo.features;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import com.itmill.toolkit.terminal.StreamResource;
import com.itmill.toolkit.ui.Component;
import com.itmill.toolkit.ui.Label;
import com.itmill.toolkit.ui.Link;
import com.itmill.toolkit.ui.OrderedLayout;
import com.itmill.toolkit.ui.Panel;
import com.itmill.toolkit.ui.Upload;
import com.itmill.toolkit.ui.Upload.FinishedEvent;
public class FeatureUpload
extends Feature
implements Upload.FinishedListener {
Buffer buffer = new Buffer();
Panel status = new Panel("Uploaded file:");
public FeatureUpload() {
super();
}
protected Component getDemoComponent() {
OrderedLayout l = new OrderedLayout();
// Example panel
Panel show = new Panel("Upload component");
Upload up = new Upload("Upload a file:", buffer);
up.addListener(this);
show.addComponent(up);
status.setVisible(false);
l.addComponent(status);
l.addComponent(show);
// Properties
PropertyPanel p = new PropertyPanel(up);
l.addComponent(p);
return l;
}
protected String getExampleSrc() {
return "Upload u = new Upload(\"Upload a file:\", uploadReceiver);\n\n"
+ "public class uploadReceiver \n"
+ "implements Upload.receiver, Upload.FinishedListener { \n"
+ "\n"
+ " java.io.File file;\n"
+ " java.io.FileOutputStream fos;\n"
+ " public uploadReceiver() {\n"
+ " }";
}
protected String getDescriptionXHTML() {
return "This demonstrates the use of the Upload component together with the Link component. "
+ "This implementation does not actually store the file to disk, it only keeps it in a buffer. "
+ "The example given on the example-tab on the other hand stores the file to disk and binds the link to that file.<br/>"
+ "<br/>On the demo tab you can try out how the different properties affect the presentation of the component.";
}
protected String getImage() {
return "filetransfer.jpg";
}
protected String getTitle() {
return "Upload";
}
public void uploadFinished(FinishedEvent event) {
status.removeAllComponents();
if (buffer.getStream() == null)
status.addComponent(
new Label("Upload finished, but output buffer is null!!"));
else {
status.addComponent(
new Label(
"<b>Name:</b> " + event.getFilename(),
Label.CONTENT_XHTML));
status.addComponent(
new Label(
"<b>Mimetype:</b> " + event.getMIMEType(),
Label.CONTENT_XHTML));
status.addComponent(
new Label(
"<b>Size:</b> " + event.getLength() + " bytes.",
Label.CONTENT_XHTML));
status.addComponent(
new Link(
"Download " + buffer.getFileName(),
new StreamResource(
buffer,
buffer.getFileName(),
getApplication())));
status.setVisible(true);
}
}
public class Buffer
implements StreamResource.StreamSource, Upload.Receiver {
ByteArrayOutputStream outputBuffer = null;
String mimeType;
String fileName;
public Buffer() {
}
public InputStream getStream() {
if (outputBuffer == null)
return null;
return new ByteArrayInputStream(outputBuffer.toByteArray());
}
/**
* @see com.itmill.toolkit.ui.Upload.Receiver#receiveUpload(String, String)
*/
public OutputStream receiveUpload(String filename, String MIMEType) {
fileName = filename;
mimeType = MIMEType;
outputBuffer = new ByteArrayOutputStream();
return outputBuffer;
}
/**
* Returns the fileName.
* @return String
*/
public String getFileName() {
return fileName;
}
/**
* Returns the mimeType.
* @return String
*/
public String getMimeType() {
return mimeType;
}
}
}
|
