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50 | |
51 | #include <QFileDialog> |
52 | #include <QMessageBox> |
53 | #include <QLibraryInfo> |
54 | #include <QtXmlPatterns> |
55 | |
56 | #include "mainwindow.h" |
57 | #include "xmlsyntaxhighlighter.h" |
58 | |
59 | //! [0] |
60 | MainWindow::MainWindow() : m_fileTree(m_namePool) |
61 | { |
62 | setupUi(this); |
63 | |
64 | new XmlSyntaxHighlighter(fileTree->document()); |
65 | |
66 | // Set up the font. |
67 | { |
68 | QFont font("Courier" ,10); |
69 | font.setFixedPitch(true); |
70 | |
71 | fileTree->setFont(font); |
72 | queryEdit->setFont(font); |
73 | output->setFont(font); |
74 | } |
75 | |
76 | const QString dir(QLibraryInfo::location(QLibraryInfo::ExamplesPath) + "/xmlpatterns/filetree" ); |
77 | qDebug() << dir; |
78 | |
79 | if (QDir(dir).exists()) |
80 | loadDirectory(directory: dir); |
81 | else |
82 | fileTree->setPlainText(tr(s: "Use the Open menu entry to select a directory." )); |
83 | |
84 | const QStringList queries(QDir(":/queries/" , "*.xq" ).entryList()); |
85 | int len = queries.count(); |
86 | |
87 | for (int i = 0; i < len; ++i) |
88 | queryBox->addItem(atext: queries.at(i)); |
89 | |
90 | } |
91 | //! [0] |
92 | |
93 | //! [2] |
94 | void MainWindow::on_queryBox_currentIndexChanged(const QString ¤tText) |
95 | { |
96 | QFile queryFile(":/queries/" + currentText); |
97 | queryFile.open(flags: QIODevice::ReadOnly); |
98 | |
99 | queryEdit->setPlainText(QString::fromLatin1(str: queryFile.readAll())); |
100 | evaluateResult(); |
101 | } |
102 | //! [2] |
103 | |
104 | //! [3] |
105 | void MainWindow::evaluateResult() |
106 | { |
107 | if (queryBox->currentText().isEmpty() || m_fileNode.isNull()) |
108 | return; |
109 | |
110 | QXmlQuery query(m_namePool); |
111 | query.bindVariable(localName: "fileTree" , value: m_fileNode); |
112 | query.setQuery(queryURI: QUrl("qrc:/queries/" + queryBox->currentText())); |
113 | |
114 | QByteArray formatterOutput; |
115 | QBuffer buffer(&formatterOutput); |
116 | buffer.open(openMode: QIODevice::WriteOnly); |
117 | |
118 | QXmlFormatter formatter(query, &buffer); |
119 | query.evaluateTo(callback: &formatter); |
120 | |
121 | output->setText(QString::fromLatin1(str: formatterOutput.constData())); |
122 | } |
123 | //! [3] |
124 | |
125 | //! [1] |
126 | void MainWindow::on_actionOpenDirectory_triggered() |
127 | { |
128 | const QString directoryName = QFileDialog::getExistingDirectory(parent: this); |
129 | if (!directoryName.isEmpty()) |
130 | loadDirectory(directory: directoryName); |
131 | } |
132 | //! [1] |
133 | |
134 | //! [4] |
135 | //! [5] |
136 | void MainWindow::loadDirectory(const QString &directory) |
137 | { |
138 | Q_ASSERT(QDir(directory).exists()); |
139 | |
140 | m_fileNode = m_fileTree.nodeFor(fileName: directory); |
141 | //! [5] |
142 | |
143 | QXmlQuery query(m_namePool); |
144 | query.bindVariable(localName: "fileTree" , value: m_fileNode); |
145 | query.setQuery(queryURI: QUrl("qrc:/queries/wholeTree.xq" )); |
146 | |
147 | QByteArray output; |
148 | QBuffer buffer(&output); |
149 | buffer.open(openMode: QIODevice::WriteOnly); |
150 | |
151 | QXmlFormatter formatter(query, &buffer); |
152 | query.evaluateTo(callback: &formatter); |
153 | |
154 | treeInfo->setText(tr(s: "Model of %1 output as XML." ).arg(a: directory)); |
155 | fileTree->setText(QString::fromLatin1(str: output.constData())); |
156 | evaluateResult(); |
157 | //! [6] |
158 | } |
159 | //! [6] |
160 | //! [4] |
161 | |
162 | void MainWindow::on_actionAbout_triggered() |
163 | { |
164 | QMessageBox::about(parent: this, title: tr(s: "About File Tree" ), |
165 | text: tr(s: "<p>Select <b>File->Open Directory</b> and " |
166 | "choose a directory. The directory is then " |
167 | "loaded into the model, and the model is " |
168 | "displayed on the left as XML.</p>" |
169 | |
170 | "<p>From the query menu on the right, select " |
171 | "a query. The query is displayed and then run " |
172 | "on the model. The results are displayed below " |
173 | "the query.</p>" )); |
174 | } |
175 | |
176 | |
177 | |