xbelwriter.cpp Example File

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** BSD License Usage
 ** Alternatively, you may use this file under the terms of the BSD license
 ** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of The Qt Company Ltd nor the names of its
 **     contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtWidgets>

 #include "xbelwriter.h"
 #include "xbelreader.h"

 static inline QString yesValue() { return QStringLiteral("yes"); }
 static inline QString noValue() { return QStringLiteral("no"); }
 static inline QString titleElement() { return QStringLiteral("title"); }

 XbelWriter::XbelWriter(const QTreeWidget *treeWidget)
     : treeWidget(treeWidget)
 {
     xml.setAutoFormatting(true);
 }

 bool XbelWriter::writeFile(QIODevice *device)
 {
     xml.setDevice(device);

     xml.writeStartDocument();
     xml.writeDTD(QStringLiteral("<!DOCTYPE xbel>"));
     xml.writeStartElement(QStringLiteral("xbel"));
     xml.writeAttribute(XbelReader::versionAttribute(), QStringLiteral("1.0"));
     for (int i = 0; i < treeWidget->topLevelItemCount(); ++i)
         writeItem(treeWidget->topLevelItem(i));

     xml.writeEndDocument();
     return true;
 }

 void XbelWriter::writeItem(const QTreeWidgetItem *item)
 {
     QString tagName = item->data(0, Qt::UserRole).toString();
     if (tagName == QLatin1String("folder")) {
         bool folded = !treeWidget->isItemExpanded(item);
         xml.writeStartElement(tagName);
         xml.writeAttribute(XbelReader::foldedAttribute(), folded ? yesValue() : noValue());
         xml.writeTextElement(titleElement(), item->text(0));
         for (int i = 0; i < item->childCount(); ++i)
             writeItem(item->child(i));
         xml.writeEndElement();
     } else if (tagName == QLatin1String("bookmark")) {
         xml.writeStartElement(tagName);
         if (!item->text(1).isEmpty())
             xml.writeAttribute(XbelReader::hrefAttribute(), item->text(1));
         xml.writeTextElement(titleElement(), item->text(0));
         xml.writeEndElement();
     } else if (tagName == QLatin1String("separator")) {
         xml.writeEmptyElement(tagName);
     }
 }