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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include <QtXmlPatterns>
#include "mainwindow.h"
#include "xmlsyntaxhighlighter.h"
//! [4]
class MessageHandler : public QAbstractMessageHandler
{
public:
MessageHandler()
: QAbstractMessageHandler(0)
{
}
QString statusMessage() const
{
return m_description;
}
int line() const
{
return m_sourceLocation.line();
}
int column() const
{
return m_sourceLocation.column();
}
protected:
virtual void handleMessage(QtMsgType type, const QString &description,
const QUrl &identifier, const QSourceLocation &sourceLocation)
{
Q_UNUSED(type);
Q_UNUSED(identifier);
m_messageType = type;
m_description = description;
m_sourceLocation = sourceLocation;
}
private:
QtMsgType m_messageType;
QString m_description;
QSourceLocation m_sourceLocation;
};
//! [4]
//! [0]
MainWindow::MainWindow()
{
setupUi(this);
new XmlSyntaxHighlighter(schemaView->document());
new XmlSyntaxHighlighter(instanceEdit->document());
schemaSelection->addItem(tr("Contact Schema"));
schemaSelection->addItem(tr("Recipe Schema"));
schemaSelection->addItem(tr("Order Schema"));
instanceSelection->addItem(tr("Valid Contact Instance"));
instanceSelection->addItem(tr("Invalid Contact Instance"));
connect(schemaSelection, SIGNAL(currentIndexChanged(int)), SLOT(schemaSelected(int)));
connect(instanceSelection, SIGNAL(currentIndexChanged(int)), SLOT(instanceSelected(int)));
connect(validateButton, SIGNAL(clicked()), SLOT(validate()));
connect(instanceEdit, SIGNAL(textChanged()), SLOT(textChanged()));
validationStatus->setAlignment(Qt::AlignCenter | Qt::AlignVCenter);
schemaSelected(0);
instanceSelected(0);
}
//! [0]
//! [1]
void MainWindow::schemaSelected(int index)
{
instanceSelection->clear();
if (index == 0) {
instanceSelection->addItem(tr("Valid Contact Instance"));
instanceSelection->addItem(tr("Invalid Contact Instance"));
} else if (index == 1) {
instanceSelection->addItem(tr("Valid Recipe Instance"));
instanceSelection->addItem(tr("Invalid Recipe Instance"));
} else if (index == 2) {
instanceSelection->addItem(tr("Valid Order Instance"));
instanceSelection->addItem(tr("Invalid Order Instance"));
}
textChanged();
QFile schemaFile(QString(":/schema_%1.xsd").arg(index));
schemaFile.open(QIODevice::ReadOnly);
const QString schemaText(QString::fromUtf8(schemaFile.readAll()));
schemaView->setPlainText(schemaText);
validate();
}
//! [1]
//! [2]
void MainWindow::instanceSelected(int index)
{
QFile instanceFile(QString(":/instance_%1.xml").arg((2*schemaSelection->currentIndex()) + index));
instanceFile.open(QIODevice::ReadOnly);
const QString instanceText(QString::fromUtf8(instanceFile.readAll()));
instanceEdit->setPlainText(instanceText);
validate();
}
//! [2]
//! [3]
void MainWindow::validate()
{
const QByteArray schemaData = schemaView->toPlainText().toUtf8();
const QByteArray instanceData = instanceEdit->toPlainText().toUtf8();
MessageHandler messageHandler;
QXmlSchema schema;
schema.setMessageHandler(&messageHandler);
schema.load(schemaData);
bool errorOccurred = false;
if (!schema.isValid()) {
errorOccurred = true;
} else {
QXmlSchemaValidator validator(schema);
if (!validator.validate(instanceData))
errorOccurred = true;
}
if (errorOccurred) {
validationStatus->setText(messageHandler.statusMessage());
moveCursor(messageHandler.line(), messageHandler.column());
} else {
validationStatus->setText(tr("validation successful"));
}
const QString styleSheet = QString("QLabel {background: %1; padding: 3px}")
.arg(errorOccurred ? QColor(Qt::red).lighter(160).name() :
QColor(Qt::green).lighter(160).name());
validationStatus->setStyleSheet(styleSheet);
}
//! [3]
void MainWindow::textChanged()
{
instanceEdit->setExtraSelections(QList<QTextEdit::ExtraSelection>());
}
void MainWindow::moveCursor(int line, int column)
{
instanceEdit->moveCursor(QTextCursor::Start);
for (int i = 1; i < line; ++i)
instanceEdit->moveCursor(QTextCursor::Down);
for (int i = 1; i < column; ++i)
instanceEdit->moveCursor(QTextCursor::Right);
QList<QTextEdit::ExtraSelection> extraSelections;
QTextEdit::ExtraSelection selection;
const QColor lineColor = QColor(Qt::red).lighter(160);
selection.format.setBackground(lineColor);
selection.format.setProperty(QTextFormat::FullWidthSelection, true);
selection.cursor = instanceEdit->textCursor();
selection.cursor.clearSelection();
extraSelections.append(selection);
instanceEdit->setExtraSelections(extraSelections);
instanceEdit->setFocus();
}
|
