/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the examples of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include <QtGui>+
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#include <QLibraryInfo>+
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#include <QtXmlPatterns>+
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+
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#include "mainwindow.h"+
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#include "xmlsyntaxhighlighter.h"+
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+
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//! [0]+
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MainWindow::MainWindow() : m_fileTree(m_namePool)+
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{+
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    setupUi(this);+
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+
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    new XmlSyntaxHighlighter(fileTree->document());+
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+
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    // Set up the font.+
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    {+
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        QFont font("Courier",10);+
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        font.setFixedPitch(true);+
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+
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        fileTree->setFont(font);+
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        queryEdit->setFont(font);+
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        output->setFont(font);+
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    }+
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+
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    const QString dir(QLibraryInfo::location(QLibraryInfo::ExamplesPath) + "/xmlpatterns/filetree");+
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    qDebug() << dir;+
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+
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    if (QDir(dir).exists())+
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        loadDirectory(dir);+
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    else+
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        fileTree->setPlainText(tr("Use the Open menu entry to select a directory."));+
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+
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    const QStringList queries(QDir(":/queries/", "*.xq").entryList());+
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    int len = queries.count();+
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+
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    for (int i = 0; i < len; ++i)+
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        queryBox->addItem(queries.at(i));+
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+
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}+
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//! [0]+
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+
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//! [2]+
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void MainWindow::on_queryBox_currentIndexChanged()+
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{+
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    QFile queryFile(":/queries/" + queryBox->currentText());+
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    queryFile.open(QIODevice::ReadOnly);+
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+
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    queryEdit->setPlainText(QString::fromLatin1(queryFile.readAll()));+
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    evaluateResult();+
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}+
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//! [2]+
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+
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//! [3]+
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void MainWindow::evaluateResult()+
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{+
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    if (queryBox->currentText().isEmpty())+
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        return;+
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+
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    QXmlQuery query(m_namePool);+
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    query.bindVariable("fileTree", m_fileNode);+
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    query.setQuery(QUrl("qrc:/queries/" + queryBox->currentText()));+
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+
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    QByteArray formatterOutput;+
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    QBuffer buffer(&formatterOutput);+
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    buffer.open(QIODevice::WriteOnly);+
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+
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    QXmlFormatter formatter(query, &buffer);+
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    query.evaluateTo(&formatter);+
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+
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    output->setText(QString::fromLatin1(formatterOutput.constData()));+
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}+
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//! [3]+
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+
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//! [1]+
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void MainWindow::on_actionOpenDirectory_triggered()+
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{+
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    const QString directoryName = QFileDialog::getExistingDirectory(this);+
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    if (!directoryName.isEmpty())+
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        loadDirectory(directoryName);+
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}+
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//! [1]+
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+
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//! [4]+
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//! [5]+
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void MainWindow::loadDirectory(const QString &directory)+
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{+
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    Q_ASSERT(QDir(directory).exists());+
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+
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    m_fileNode = m_fileTree.nodeFor(directory);+
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//! [5]+
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+
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    QXmlQuery query(m_namePool);+
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    query.bindVariable("fileTree", m_fileNode);+
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    query.setQuery(QUrl("qrc:/queries/wholeTree.xq"));+
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+
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    QByteArray output;+
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    QBuffer buffer(&output);+
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    buffer.open(QIODevice::WriteOnly);+
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+
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    QXmlFormatter formatter(query, &buffer);+
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    query.evaluateTo(&formatter);+
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+
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    treeInfo->setText((QString(tr("Model of %1 output as XML.")).arg(directory)));+
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    fileTree->setText(QString::fromLatin1(output.constData()));+
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    evaluateResult();+
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//! [6]    +
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}+
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//! [6]    +
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//! [4]+
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+
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void MainWindow::on_actionAbout_triggered()+
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{+
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    QMessageBox::about(this, tr("About File Tree"),+
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                   tr("<p>Select <b>File->Open Directory</b> and "+
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                      "choose a directory. The directory is then "+
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                      "loaded into the model, and the model is "+
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                      "displayed on the left as XML.</p>"+
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+
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                      "<p>From the query menu on the right, select "+
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                      "a query. The query is displayed and then run "+
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                      "on the model. The results are displayed below "+
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                      "the query.</p>"));+
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}+
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+
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+
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