mainwindow.cpp Example File | Qt 4.8 (original) (raw)

xmlpatterns/filetree/mainwindow.cpp

#include #include #include

#include "mainwindow.h" #include "xmlsyntaxhighlighter.h"

MainWindow::MainWindow() : m_fileTree(m_namePool) { setupUi(this);

new XmlSyntaxHighlighter(fileTree->document());


{
    [QFont](qfont.html) font("Courier",10);
    font.setFixedPitch(true);

    fileTree->setFont(font);
    queryEdit->setFont(font);
    output->setFont(font);
}

const [QString](qstring.html) dir([QLibraryInfo](qlibraryinfo.html)::location([QLibraryInfo](qlibraryinfo.html)::ExamplesPath) + "/xmlpatterns/filetree");
[qDebug](qtglobal.html#qDebug)() << dir;

if ([QDir](qdir.html)(dir).exists())
    loadDirectory(dir);
else
    fileTree->setPlainText(tr("Use the Open menu entry to select a directory."));

const [QStringList](qstringlist.html) queries([QDir](qdir.html)(":/queries/", "*.xq").entryList());
int len = queries.count();

for (int i = 0; i < len; ++i)
    queryBox->addItem(queries.at(i));

}

void MainWindow::on_queryBox_currentIndexChanged() { QFile queryFile(":/queries/" + queryBox->currentText()); queryFile.open(QIODevice::ReadOnly);

queryEdit->setPlainText([QString](qstring.html)::fromLatin1(queryFile.readAll()));
evaluateResult();

}

void MainWindow::evaluateResult() { if (queryBox->currentText().isEmpty()) return;

[QXmlQuery](qxmlquery.html) query(m_namePool);
query.bindVariable("fileTree", m_fileNode);
query.setQuery([QUrl](qurl.html)("qrc:/queries/" + queryBox->currentText()));

[QByteArray](qbytearray.html) formatterOutput;
[QBuffer](qbuffer.html) buffer(&formatterOutput);
buffer.open([QIODevice](qiodevice.html)::WriteOnly);

[QXmlFormatter](qxmlformatter.html) formatter(query, &buffer);
query.evaluateTo(&formatter);

output->setText([QString](qstring.html)::fromLatin1(formatterOutput.constData()));

}

void MainWindow::on_actionOpenDirectory_triggered() { const QString directoryName = QFileDialog::getExistingDirectory(this); if (!directoryName.isEmpty()) loadDirectory(directoryName); }

void MainWindow::loadDirectory(const QString &directory) { Q_ASSERT(QDir(directory).exists());

m_fileNode = m_fileTree.nodeFor(directory);

[QXmlQuery](qxmlquery.html) query(m_namePool);
query.bindVariable("fileTree", m_fileNode);
query.setQuery([QUrl](qurl.html)("qrc:/queries/wholeTree.xq"));

[QByteArray](qbytearray.html) output;
[QBuffer](qbuffer.html) buffer(&output);
buffer.open([QIODevice](qiodevice.html)::WriteOnly);

[QXmlFormatter](qxmlformatter.html) formatter(query, &buffer);
query.evaluateTo(&formatter);

treeInfo->setText(tr("Model of %1 output as XML.").arg(directory));
fileTree->setText([QString](qstring.html)::fromLatin1(output.constData()));
evaluateResult();

}

void MainWindow::on_actionAbout_triggered() { QMessageBox::about(this, tr("About File Tree"), tr("

Select File->Open Directory and " "choose a directory. The directory is then " "loaded into the model, and the model is " "displayed on the left as XML.

                  "<p>From the query menu on the right, select "
                  "a query. The query is displayed and then run "
                  "on the model. The results are displayed below "
                  "the query.</p>"));

}

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