/****************************************************************************+
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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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** $QT_BEGIN_LICENSE:BSD$+
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** You may use this file under the terms of the BSD license as follows:+
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**+
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** "Redistribution and use in source and binary forms, with or without+
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** modification, are permitted provided that the following conditions are+
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** met:+
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**   * Redistributions of source code must retain the above copyright+
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**     notice, this list of conditions and the following disclaimer.+
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**   * Redistributions in binary form must reproduce the above copyright+
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**     notice, this list of conditions and the following disclaimer in+
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**     the documentation and/or other materials provided with the+
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**     distribution.+
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**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor+
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**     the names of its contributors may be used to endorse or promote+
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**     products derived from this software without specific prior written+
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**     permission.+
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**+
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT+
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,+
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT+
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,+
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY+
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT+
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE+
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."+
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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 <QtXmlPatterns>+
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+
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#include "querymainwindow.h"+
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#include "xmlsyntaxhighlighter.h"+
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+
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//! [0]+
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QueryMainWindow::QueryMainWindow() : ui_defaultQueries(0)+
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{+
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    setupUi(this);+
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+
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    new XmlSyntaxHighlighter(qFindChild<QTextEdit*>(this, "inputTextEdit")->document());+
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    new XmlSyntaxHighlighter(qFindChild<QTextEdit*>(this, "outputTextEdit")->document());+
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+
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    ui_defaultQueries = qFindChild<QComboBox*>(this, "defaultQueries");+
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    QMetaObject::connectSlotsByName(this);+
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    connect(ui_defaultQueries, SIGNAL(currentIndexChanged(int)), SLOT(displayQuery(int)));+
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+
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    loadInputFile();+
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    const QStringList queries(QDir(":/files/", "*.xq").entryList());+
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    int len = queries.count();+
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    for(int i = 0; i < len; ++i)+
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        ui_defaultQueries->addItem(queries.at(i));+
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}+
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//! [0]+
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+
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+
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//! [1]+
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void QueryMainWindow::displayQuery(int index)+
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{+
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    QFile queryFile(QString(":files/") + ui_defaultQueries->itemText(index));+
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    queryFile.open(QIODevice::ReadOnly);+
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    const QString query(QString::fromLatin1(queryFile.readAll()));+
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    qFindChild<QTextEdit*>(this, "queryTextEdit")->setPlainText(query);+
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+
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    evaluate(query);+
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}+
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//! [1]+
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+
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+
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void QueryMainWindow::loadInputFile()+
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{+
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    QFile forView;+
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    forView.setFileName(":/files/cookbook.xml");+
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    if (!forView.open(QIODevice::ReadOnly)) {+
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        QMessageBox::information(this,+
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            tr("Unable to open file"), forView.errorString());+
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        return;+
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    }+
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+
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    QTextStream in(&forView);+
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    QString inputDocument = in.readAll();+
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    qFindChild<QTextEdit*>(this, "inputTextEdit")->setPlainText(inputDocument);+
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}+
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+
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+
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//! [2]+
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void QueryMainWindow::evaluate(const QString &str)+
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{+
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    QFile sourceDocument;+
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    sourceDocument.setFileName(":/files/cookbook.xml");+
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    sourceDocument.open(QIODevice::ReadOnly);+
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+
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    QByteArray outArray;+
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    QBuffer buffer(&outArray);+
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    buffer.open(QIODevice::ReadWrite);+
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+
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    QXmlQuery query;+
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    query.bindVariable("inputDocument", &sourceDocument);+
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    query.setQuery(str);+
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    if (!query.isValid())+
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        return;+
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+
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    QXmlFormatter formatter(query, &buffer);+
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    if (!query.evaluateTo(&formatter))+
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        return;+
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+
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    buffer.close();+
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    qFindChild<QTextEdit*>(this, "outputTextEdit")->setPlainText(QString::fromUtf8(outArray.constData()));+
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+
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}+
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//! [2]+
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+
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