/****************************************************************************+
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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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**+
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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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+
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#include "xbelgenerator.h"+
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+
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XbelGenerator::XbelGenerator(QTreeWidget *treeWidget)+
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    : treeWidget(treeWidget)+
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{+
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}+
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+
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bool XbelGenerator::write(QIODevice *device)+
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{+
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    out.setDevice(device);+
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    out.setCodec("UTF-8");+
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    out << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"+
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        << "<!DOCTYPE xbel>\n"+
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        << "<xbel version=\"1.0\">\n";+
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+
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    for (int i = 0; i < treeWidget->topLevelItemCount(); ++i)+
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        generateItem(treeWidget->topLevelItem(i), 1);+
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+
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    out << "</xbel>\n";+
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    return true;+
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}+
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+
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QString XbelGenerator::indent(int depth)+
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{+
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    const int IndentSize = 4;+
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    return QString(IndentSize * depth, ' ');+
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}+
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+
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QString XbelGenerator::escapedText(const QString &str)+
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{+
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    QString result = str;+
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    result.replace("&", "&amp;");+
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    result.replace("<", "&lt;");+
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    result.replace(">", "&gt;");+
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    return result;+
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}+
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+
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QString XbelGenerator::escapedAttribute(const QString &str)+
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{+
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    QString result = escapedText(str);+
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    result.replace("\"", "&quot;");+
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    result.prepend("\"");+
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    result.append("\"");+
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    return result;+
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}+
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+
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void XbelGenerator::generateItem(QTreeWidgetItem *item, int depth)+
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{+
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    QString tagName = item->data(0, Qt::UserRole).toString();+
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    if (tagName == "folder") {+
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        bool folded = !treeWidget->isItemExpanded(item);+
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        out << indent(depth) << "<folder folded=\"" << (folded ? "yes" : "no")+
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                             << "\">\n"+
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            << indent(depth + 1) << "<title>" << escapedText(item->text(0))+
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                                 << "</title>\n";+
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+
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        for (int i = 0; i < item->childCount(); ++i)+
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            generateItem(item->child(i), depth + 1);+
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+
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        out << indent(depth) << "</folder>\n";+
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    } else if (tagName == "bookmark") {+
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        out << indent(depth) << "<bookmark";+
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        if (!item->text(1).isEmpty())+
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            out << " href=" << escapedAttribute(item->text(1));+
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        out << ">\n"+
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            << indent(depth + 1) << "<title>" << escapedText(item->text(0))+
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                                 << "</title>\n"+
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            << indent(depth) << "</bookmark>\n";+
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    } else if (tagName == "separator") {+
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        out << indent(depth) << "<separator/>\n";+
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    }+
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}+
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