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6 ** This file is part of the examples of the Qt Toolkit.
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39 ****************************************************************************/
40
41 #include <QtGui>
42 #include <QLibraryInfo>
43 #include <QtXmlPatterns>
44
45 #include "mainwindow.h"
46 #include "xmlsyntaxhighlighter.h"
47
48 //! [0]
MainWindow()49 MainWindow::MainWindow() : m_fileTree(m_namePool)
50 {
51 setupUi(this);
52
53 new XmlSyntaxHighlighter(fileTree->document());
54
55 // Set up the font.
56 {
57 QFont font("Courier",10);
58 font.setFixedPitch(true);
59
60 fileTree->setFont(font);
61 queryEdit->setFont(font);
62 output->setFont(font);
63 }
64
65 const QString dir(QLibraryInfo::location(QLibraryInfo::ExamplesPath) + "/xmlpatterns/filetree");
66 qDebug() << dir;
67
68 if (QDir(dir).exists())
69 loadDirectory(dir);
70 else
71 fileTree->setPlainText(tr("Use the Open menu entry to select a directory."));
72
73 const QStringList queries(QDir(":/queries/", "*.xq").entryList());
74 int len = queries.count();
75
76 for (int i = 0; i < len; ++i)
77 queryBox->addItem(queries.at(i));
78
79 }
80 //! [0]
81
82 //! [2]
on_queryBox_currentIndexChanged()83 void MainWindow::on_queryBox_currentIndexChanged()
84 {
85 QFile queryFile(":/queries/" + queryBox->currentText());
86 queryFile.open(QIODevice::ReadOnly);
87
88 queryEdit->setPlainText(QString::fromLatin1(queryFile.readAll()));
89 evaluateResult();
90 }
91 //! [2]
92
93 //! [3]
evaluateResult()94 void MainWindow::evaluateResult()
95 {
96 if (queryBox->currentText().isEmpty())
97 return;
98
99 QXmlQuery query(m_namePool);
100 query.bindVariable("fileTree", m_fileNode);
101 query.setQuery(QUrl("qrc:/queries/" + queryBox->currentText()));
102
103 QByteArray formatterOutput;
104 QBuffer buffer(&formatterOutput);
105 buffer.open(QIODevice::WriteOnly);
106
107 QXmlFormatter formatter(query, &buffer);
108 query.evaluateTo(&formatter);
109
110 output->setText(QString::fromLatin1(formatterOutput.constData()));
111 }
112 //! [3]
113
114 //! [1]
on_actionOpenDirectory_triggered()115 void MainWindow::on_actionOpenDirectory_triggered()
116 {
117 const QString directoryName = QFileDialog::getExistingDirectory(this);
118 if (!directoryName.isEmpty())
119 loadDirectory(directoryName);
120 }
121 //! [1]
122
123 //! [4]
124 //! [5]
loadDirectory(const QString & directory)125 void MainWindow::loadDirectory(const QString &directory)
126 {
127 Q_ASSERT(QDir(directory).exists());
128
129 m_fileNode = m_fileTree.nodeFor(directory);
130 //! [5]
131
132 QXmlQuery query(m_namePool);
133 query.bindVariable("fileTree", m_fileNode);
134 query.setQuery(QUrl("qrc:/queries/wholeTree.xq"));
135
136 QByteArray output;
137 QBuffer buffer(&output);
138 buffer.open(QIODevice::WriteOnly);
139
140 QXmlFormatter formatter(query, &buffer);
141 query.evaluateTo(&formatter);
142
143 treeInfo->setText(tr("Model of %1 output as XML.").arg(directory));
144 fileTree->setText(QString::fromLatin1(output.constData()));
145 evaluateResult();
146 //! [6]
147 }
148 //! [6]
149 //! [4]
150
on_actionAbout_triggered()151 void MainWindow::on_actionAbout_triggered()
152 {
153 QMessageBox::about(this, tr("About File Tree"),
154 tr("<p>Select <b>File->Open Directory</b> and "
155 "choose a directory. The directory is then "
156 "loaded into the model, and the model is "
157 "displayed on the left as XML.</p>"
158
159 "<p>From the query menu on the right, select "
160 "a query. The query is displayed and then run "
161 "on the model. The results are displayed below "
162 "the query.</p>"));
163 }
164
165
166