|  | Home · All Namespaces · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# xbelreader.cpp Example File
xml/streambookmarks/xbelreader.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
     ** Commercial Usage
     ** Licensees holding valid Qt Commercial licenses may use this file in
     ** accordance with the Qt Commercial License Agreement provided with the
     ** Software or, alternatively, in accordance with the terms contained in
     ** a written agreement between you and Nokia.
     **
     ** GNU Lesser General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU Lesser
     ** General Public License version 2.1 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.LGPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU Lesser General Public License version 2.1 requirements
     ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
     **
     ** In addition, as a special exception, Nokia gives you certain
     ** additional rights. These rights are described in the Nokia Qt LGPL
     ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
     ** package.
     **
     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU
     ** General Public License version 3.0 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.GPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU General Public License version 3.0 requirements will be
     ** met: http://www.gnu.org/copyleft/gpl.html.
     **
     ** If you are unsure which license is appropriate for your use, please
     ** contact the sales department at http://www.qtsoftware.com/contact.
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #include <QtGui>

     #include "xbelreader.h"

     XbelReader::XbelReader(QTreeWidget *treeWidget)
         : treeWidget(treeWidget)
     {
         QStyle *style = treeWidget->style();

         folderIcon.addPixmap(style->standardPixmap(QStyle::SP_DirClosedIcon),
                              QIcon::Normal, QIcon::Off);
         folderIcon.addPixmap(style->standardPixmap(QStyle::SP_DirOpenIcon),
                              QIcon::Normal, QIcon::On);
         bookmarkIcon.addPixmap(style->standardPixmap(QStyle::SP_FileIcon));
     }

     bool XbelReader::read(QIODevice *device)
     {
         setDevice(device);

         while (!atEnd()) {
             readNext();

             if (isStartElement()) {
                 if (name() == "xbel" && attributes().value("version") == "1.0")
                     readXBEL();
                 else
                     raiseError(QObject::tr("The file is not an XBEL version 1.0 file."));
             }
         }

         return !error();
     }

     void XbelReader::readUnknownElement()
     {
         Q_ASSERT(isStartElement());

         while (!atEnd()) {
             readNext();

             if (isEndElement())
                 break;

             if (isStartElement())
                 readUnknownElement();
         }
     }

     void XbelReader::readXBEL()
     {
         Q_ASSERT(isStartElement() && name() == "xbel");

         while (!atEnd()) {
             readNext();

             if (isEndElement())
                 break;

             if (isStartElement()) {
                 if (name() == "folder")
                     readFolder(0);
                 else if (name() == "bookmark")
                     readBookmark(0);
                 else if (name() == "separator")
                     readSeparator(0);
                 else
                     readUnknownElement();
             }
         }
     }

     void XbelReader::readTitle(QTreeWidgetItem *item)
     {
         Q_ASSERT(isStartElement() && name() == "title");

         QString title = readElementText();
         item->setText(0, title);
     }

     void XbelReader::readSeparator(QTreeWidgetItem *item)
     {
         QTreeWidgetItem *separator = createChildItem(item);
         separator->setFlags(item->flags() & ~Qt::ItemIsSelectable);
         separator->setText(0, QString(30, 0xB7));
         readElementText();
     }

     void XbelReader::readFolder(QTreeWidgetItem *item)
     {
         Q_ASSERT(isStartElement() && name() == "folder");

         QTreeWidgetItem *folder = createChildItem(item);
         bool folded = (attributes().value("folded") != "no");
         treeWidget->setItemExpanded(folder, !folded);

         while (!atEnd()) {
             readNext();

             if (isEndElement())
                 break;

             if (isStartElement()) {
                 if (name() == "title")
                     readTitle(folder);
                 else if (name() == "folder")
                     readFolder(folder);
                 else if (name() == "bookmark")
                     readBookmark(folder);
                 else if (name() == "separator")
                     readSeparator(folder);
                 else
                     readUnknownElement();
             }
         }
     }

     void XbelReader::readBookmark(QTreeWidgetItem *item)
     {
         Q_ASSERT(isStartElement() && name() == "bookmark");

         QTreeWidgetItem *bookmark = createChildItem(item);
         bookmark->setFlags(bookmark->flags() | Qt::ItemIsEditable);
         bookmark->setIcon(0, bookmarkIcon);
         bookmark->setText(0, QObject::tr("Unknown title"));
         bookmark->setText(1, attributes().value("href").toString());
         while (!atEnd()) {
             readNext();

             if (isEndElement())
                 break;

             if (isStartElement()) {
                 if (name() == "title")
                     readTitle(bookmark);
                 else
                     readUnknownElement();
             }
         }
     }

     QTreeWidgetItem *XbelReader::createChildItem(QTreeWidgetItem *item)
     {
         QTreeWidgetItem *childItem;
         if (item) {
             childItem = new QTreeWidgetItem(item);
         } else {
             childItem = new QTreeWidgetItem(treeWidget);
         }
         childItem->setData(0, Qt::UserRole, name().toString());
         return childItem;
     }