Home · All Classes · All Functions · Overviews

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

 /****************************************************************************
 **
 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation ([email protected])
 **
 ** 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 1.1, 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 have questions regarding the use of this file, please contact
 ** Nokia at [email protected].
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #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)
 {
     xml.setDevice(device);

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

     return !xml.error();
 }

 QString XbelReader::errorString() const
 {
     return QObject::tr("%1\nLine %2, column %3")
             .arg(xml.errorString())
             .arg(xml.lineNumber())
             .arg(xml.columnNumber());
 }

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

     while (xml.readNextStartElement()) {
         if (xml.name() == "folder")
             readFolder(0);
         else if (xml.name() == "bookmark")
             readBookmark(0);
         else if (xml.name() == "separator")
             readSeparator(0);
         else
             xml.skipCurrentElement();
     }
 }

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

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

 void XbelReader::readSeparator(QTreeWidgetItem *item)
 {
     Q_ASSERT(xml.isStartElement() && xml.name() == "separator");

     QTreeWidgetItem *separator = createChildItem(item);
     separator->setFlags(item->flags() & ~Qt::ItemIsSelectable);
     separator->setText(0, QString(30, 0xB7));
     xml.skipCurrentElement();
 }

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

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

     while (xml.readNextStartElement()) {
         if (xml.name() == "title")
             readTitle(folder);
         else if (xml.name() == "folder")
             readFolder(folder);
         else if (xml.name() == "bookmark")
             readBookmark(folder);
         else if (xml.name() == "separator")
             readSeparator(folder);
         else
             xml.skipCurrentElement();
     }
 }

 void XbelReader::readBookmark(QTreeWidgetItem *item)
 {
     Q_ASSERT(xml.isStartElement() && xml.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, xml.attributes().value("href").toString());

     while (xml.readNextStartElement()) {
         if (xml.name() == "title")
             readTitle(bookmark);
         else
             xml.skipCurrentElement();
     }
 }

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