source: trunk/examples/xmlpatterns/schema/mainwindow.cpp@ 846

Last change on this file since 846 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

  • Property svn:eol-style set to native
File size: 7.1 KB
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1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the examples of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:BSD$
10** You may use this file under the terms of the BSD license as follows:
11**
12** "Redistribution and use in source and binary forms, with or without
13** modification, are permitted provided that the following conditions are
14** met:
15** * Redistributions of source code must retain the above copyright
16** notice, this list of conditions and the following disclaimer.
17** * Redistributions in binary form must reproduce the above copyright
18** notice, this list of conditions and the following disclaimer in
19** the documentation and/or other materials provided with the
20** distribution.
21** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22** the names of its contributors may be used to endorse or promote
23** products derived from this software without specific prior written
24** permission.
25**
26** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41#include <QtGui>
42#include <QtXmlPatterns>
43
44#include "mainwindow.h"
45#include "xmlsyntaxhighlighter.h"
46
47//! [4]
48class MessageHandler : public QAbstractMessageHandler
49{
50 public:
51 MessageHandler()
52 : QAbstractMessageHandler(0)
53 {
54 }
55
56 QString statusMessage() const
57 {
58 return m_description;
59 }
60
61 int line() const
62 {
63 return m_sourceLocation.line();
64 }
65
66 int column() const
67 {
68 return m_sourceLocation.column();
69 }
70
71 protected:
72 virtual void handleMessage(QtMsgType type, const QString &description,
73 const QUrl &identifier, const QSourceLocation &sourceLocation)
74 {
75 Q_UNUSED(type);
76 Q_UNUSED(identifier);
77
78 m_messageType = type;
79 m_description = description;
80 m_sourceLocation = sourceLocation;
81 }
82
83 private:
84 QtMsgType m_messageType;
85 QString m_description;
86 QSourceLocation m_sourceLocation;
87};
88//! [4]
89
90//! [0]
91MainWindow::MainWindow()
92{
93 setupUi(this);
94
95 new XmlSyntaxHighlighter(schemaView->document());
96 new XmlSyntaxHighlighter(instanceEdit->document());
97
98 schemaSelection->addItem(tr("Contact Schema"));
99 schemaSelection->addItem(tr("Recipe Schema"));
100 schemaSelection->addItem(tr("Order Schema"));
101
102 instanceSelection->addItem(tr("Valid Contact Instance"));
103 instanceSelection->addItem(tr("Invalid Contact Instance"));
104
105 connect(schemaSelection, SIGNAL(currentIndexChanged(int)), SLOT(schemaSelected(int)));
106 connect(instanceSelection, SIGNAL(currentIndexChanged(int)), SLOT(instanceSelected(int)));
107 connect(validateButton, SIGNAL(clicked()), SLOT(validate()));
108 connect(instanceEdit, SIGNAL(textChanged()), SLOT(textChanged()));
109
110 validationStatus->setAlignment(Qt::AlignCenter | Qt::AlignVCenter);
111
112 schemaSelected(0);
113 instanceSelected(0);
114}
115//! [0]
116
117//! [1]
118void MainWindow::schemaSelected(int index)
119{
120 instanceSelection->clear();
121 if (index == 0) {
122 instanceSelection->addItem(tr("Valid Contact Instance"));
123 instanceSelection->addItem(tr("Invalid Contact Instance"));
124 } else if (index == 1) {
125 instanceSelection->addItem(tr("Valid Recipe Instance"));
126 instanceSelection->addItem(tr("Invalid Recipe Instance"));
127 } else if (index == 2) {
128 instanceSelection->addItem(tr("Valid Order Instance"));
129 instanceSelection->addItem(tr("Invalid Order Instance"));
130 }
131 textChanged();
132
133 QFile schemaFile(QString(":/schema_%1.xsd").arg(index));
134 schemaFile.open(QIODevice::ReadOnly);
135 const QString schemaText(QString::fromUtf8(schemaFile.readAll()));
136 schemaView->setPlainText(schemaText);
137
138 validate();
139}
140//! [1]
141
142//! [2]
143void MainWindow::instanceSelected(int index)
144{
145 QFile instanceFile(QString(":/instance_%1.xml").arg((2*schemaSelection->currentIndex()) + index));
146 instanceFile.open(QIODevice::ReadOnly);
147 const QString instanceText(QString::fromUtf8(instanceFile.readAll()));
148 instanceEdit->setPlainText(instanceText);
149
150 validate();
151}
152//! [2]
153
154//! [3]
155void MainWindow::validate()
156{
157 const QByteArray schemaData = schemaView->toPlainText().toUtf8();
158 const QByteArray instanceData = instanceEdit->toPlainText().toUtf8();
159
160 MessageHandler messageHandler;
161
162 QXmlSchema schema;
163 schema.setMessageHandler(&messageHandler);
164
165 schema.load(schemaData);
166
167 bool errorOccurred = false;
168 if (!schema.isValid()) {
169 errorOccurred = true;
170 } else {
171 QXmlSchemaValidator validator(schema);
172 if (!validator.validate(instanceData))
173 errorOccurred = true;
174 }
175
176 if (errorOccurred) {
177 validationStatus->setText(messageHandler.statusMessage());
178 moveCursor(messageHandler.line(), messageHandler.column());
179 } else {
180 validationStatus->setText(tr("validation successful"));
181 }
182
183 const QString styleSheet = QString("QLabel {background: %1; padding: 3px}")
184 .arg(errorOccurred ? QColor(Qt::red).lighter(160).name() :
185 QColor(Qt::green).lighter(160).name());
186 validationStatus->setStyleSheet(styleSheet);
187}
188//! [3]
189
190void MainWindow::textChanged()
191{
192 instanceEdit->setExtraSelections(QList<QTextEdit::ExtraSelection>());
193}
194
195void MainWindow::moveCursor(int line, int column)
196{
197 instanceEdit->moveCursor(QTextCursor::Start);
198 for (int i = 1; i < line; ++i)
199 instanceEdit->moveCursor(QTextCursor::Down);
200
201 for (int i = 1; i < column; ++i)
202 instanceEdit->moveCursor(QTextCursor::Right);
203
204 QList<QTextEdit::ExtraSelection> extraSelections;
205 QTextEdit::ExtraSelection selection;
206
207 const QColor lineColor = QColor(Qt::red).lighter(160);
208 selection.format.setBackground(lineColor);
209 selection.format.setProperty(QTextFormat::FullWidthSelection, true);
210 selection.cursor = instanceEdit->textCursor();
211 selection.cursor.clearSelection();
212 extraSelections.append(selection);
213
214 instanceEdit->setExtraSelections(extraSelections);
215
216 instanceEdit->setFocus();
217}
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