blob: ce0238dde565ba60d1bd3b8f4026360687fdcde4 (
plain)
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
|
/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal;
import java.util.ArrayList;
import java.util.List;
import com.vaadin.data.Buffered;
import com.vaadin.data.Validator;
import com.vaadin.terminal.gwt.client.ui.AbstractComponentConnector;
import com.vaadin.terminal.gwt.server.AbstractApplicationServlet;
/**
* Base class for component error messages.
*
* This class is used on the server side to construct the error messages to send
* to the client.
*
* @since 7.0
*/
public abstract class AbstractErrorMessage implements ErrorMessage {
public enum ContentMode {
/**
* Content mode, where the error contains only plain text.
*/
TEXT,
/**
* Content mode, where the error contains preformatted text.
*/
PREFORMATTED,
/**
* Content mode, where the error contains XHTML.
*/
XHTML;
}
/**
* Content mode.
*/
private ContentMode mode = ContentMode.TEXT;
/**
* Message in content mode.
*/
private String message;
/**
* Error level.
*/
private ErrorLevel level = ErrorLevel.ERROR;
private List<ErrorMessage> causes = new ArrayList<ErrorMessage>();
protected AbstractErrorMessage(String message) {
this.message = message;
}
protected String getMessage() {
return message;
}
protected void setMessage(String message) {
this.message = message;
}
/* Documented in interface */
public ErrorLevel getErrorLevel() {
return level;
}
protected void setErrorLevel(ErrorLevel level) {
this.level = level;
}
protected ContentMode getMode() {
return mode;
}
protected void setMode(ContentMode mode) {
this.mode = mode;
}
protected List<ErrorMessage> getCauses() {
return causes;
}
protected void addCause(ErrorMessage cause) {
causes.add(cause);
}
@Deprecated
public void paint(PaintTarget target) throws PaintException {
// TODO if no message and only one cause, paint cause only? error level?
target.startTag(AbstractComponentConnector.ATTRIBUTE_ERROR);
target.addAttribute("level", level.getText());
paintContent(target);
target.endTag(AbstractComponentConnector.ATTRIBUTE_ERROR);
}
// TODO temporary method - move logic to client side
@Deprecated
protected void paintContent(PaintTarget target) throws PaintException {
// Paint the message
switch (getMode()) {
case TEXT:
target.addText(AbstractApplicationServlet
.safeEscapeForHtml(getMessage()));
break;
case PREFORMATTED:
target.addText("<pre>"
+ AbstractApplicationServlet
.safeEscapeForHtml(getMessage()) + "</pre>");
break;
case XHTML:
target.addText(getMessage());
break;
}
if (getCauses().size() > 0) {
for (ErrorMessage cause : getCauses()) {
cause.paint(target);
}
}
}
// TODO replace this with a helper method elsewhere?
public static ErrorMessage getErrorMessageForException(Throwable t) {
if (null == t) {
return null;
} else if (t instanceof ErrorMessage) {
// legacy case for custom error messages
return (ErrorMessage) t;
} else if (t instanceof Validator.InvalidValueException) {
UserError error = new UserError(
((Validator.InvalidValueException) t).getHtmlMessage(),
ContentMode.XHTML, ErrorLevel.ERROR);
for (Validator.InvalidValueException nestedException : ((Validator.InvalidValueException) t)
.getCauses()) {
error.addCause(getErrorMessageForException(nestedException));
}
return error;
} else if (t instanceof Buffered.SourceException) {
// no message, only the causes to be painted
UserError error = new UserError(null);
// in practice, this was always ERROR in Vaadin 6 unless tweaked in
// custom exceptions implementing ErrorMessage
error.setErrorLevel(ErrorLevel.ERROR);
// causes
for (Throwable nestedException : ((Buffered.SourceException) t)
.getCauses()) {
error.addCause(getErrorMessageForException(nestedException));
}
return error;
} else {
return new SystemError(t);
}
}
/* Documented in superclass */
@Override
public String toString() {
return getMessage();
}
}
|
