--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/demos/browser/xbel.d	Sun May 17 18:49:59 2009 +0000
@@ -0,0 +1,359 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications 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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+module xbel;
+
+import QtCore.QXmlStreamReader;
+import QtCore.QDateTime;
+
+
+import QtCore.QFile;
+
+class BookmarkNode
+{
+public:
+    enum Type {
+        Root,
+        Folder,
+        Bookmark,
+        Separator
+    };
+
+    this(Type type = Root, BookmarkNode *parent = null)
+{
+	 expanded = false;
+   m_parent = parent;
+   m_type = type;
+	
+    if (parent)
+        parent.add(this);
+}
+    
+    ~this()
+{
+    if (m_parent)
+        m_parent.remove(this);
+    qDeleteAll(m_children);
+    m_parent = 0;
+    m_type = BookmarkNode::Root;
+}
+
+    bool operator==(const BookmarkNode &other)
+{
+    if (url != other.url
+        || title != other.title
+        || desc != other.desc
+        || expanded != other.expanded
+        || m_type != other.m_type
+        || m_children.count() != other.m_children.count())
+        return false;
+
+    for (int i = 0; i < m_children.count(); ++i)
+        if (!((*(m_children[i])) == (*(other.m_children[i]))))
+            return false;
+    return true;
+}
+
+    Type type() const
+{
+    return m_type;
+}
+
+    void setType(Type type)
+{
+    m_type = type;
+}
+
+    QList<BookmarkNode *> children() const
+{
+    return m_children;
+}
+
+
+    BookmarkNode *parent() const
+{
+    return m_parent;
+}
+
+    void add(BookmarkNode *child, int offset = -1)
+{
+    Q_ASSERT(child.m_type != Root);
+    if (child.m_parent)
+        child.m_parent.remove(child);
+    child.m_parent = this;
+    if (-1 == offset)
+        offset = m_children.size();
+    m_children.insert(offset, child);
+}
+
+    void remove(BookmarkNode *child)
+{
+    child.m_parent = 0;
+    m_children.removeAll(child);
+}
+
+    QString url;
+    QString title;
+    QString desc;
+    bool expanded;
+
+private:
+    BookmarkNode *m_parent;
+    Type m_type;
+    QList<BookmarkNode *> m_children;
+
+};
+
+class XbelReader : public QXmlStreamReader
+{
+public:
+this()
+{
+}
+
+BookmarkNode *read(const QString &fileName)
+{
+    QFile file(fileName);
+    if (!file.exists()) {
+        return new BookmarkNode(BookmarkNode::Root);
+    }
+    file.open(QFile::ReadOnly);
+    return read(&file);
+}
+
+BookmarkNode *read(QIODevice *device)
+{
+    BookmarkNode *root = new BookmarkNode(BookmarkNode::Root);
+    setDevice(device);
+    while (!atEnd()) {
+        readNext();
+        if (isStartElement()) {
+            QString version = attributes().value(QLatin1String("version")).toString();
+            if (name() == QLatin1String("xbel")
+                && (version.isEmpty() || version == QLatin1String("1.0"))) {
+                readXBEL(root);
+            } else {
+                raiseError(QObject::tr("The file is not an XBEL version 1.0 file."));
+            }
+        }
+    }
+    return root;
+}
+
+private:
+    void skipUnknownElement()
+{
+    Q_ASSERT(isStartElement());
+
+    while (!atEnd()) {
+        readNext();
+
+        if (isEndElement())
+            break;
+
+        if (isStartElement())
+            skipUnknownElement();
+    }
+}
+
+    void readXBEL(BookmarkNode *parent)
+{
+    Q_ASSERT(isStartElement() && name() == QLatin1String("xbel"));
+
+    while (!atEnd()) {
+        readNext();
+        if (isEndElement())
+            break;
+
+        if (isStartElement()) {
+            if (name() == QLatin1String("folder"))
+                readFolder(parent);
+            else if (name() == QLatin1String("bookmark"))
+                readBookmarkNode(parent);
+            else if (name() == QLatin1String("separator"))
+                readSeparator(parent);
+            else
+                skipUnknownElement();
+        }
+    }
+}
+
+    void readTitle(BookmarkNode *parent)
+{
+    Q_ASSERT(isStartElement() && name() == QLatin1String("title"));
+    parent.title = readElementText();
+}
+
+    void readDescription(BookmarkNode *parent)
+{
+    Q_ASSERT(isStartElement() && name() == QLatin1String("desc"));
+    parent.desc = readElementText();
+}
+
+    void readSeparator(BookmarkNode *parent)
+{
+    new BookmarkNode(BookmarkNode::Separator, parent);
+    // empty elements have a start and end element
+    readNext();
+}
+
+
+    void readFolder(BookmarkNode *parent)
+{
+    Q_ASSERT(isStartElement() && name() == QLatin1String("folder"));
+
+    BookmarkNode *folder = new BookmarkNode(BookmarkNode::Folder, parent);
+    folder.expanded = (attributes().value(QLatin1String("folded")) == QLatin1String("no"));
+
+    while (!atEnd()) {
+        readNext();
+
+        if (isEndElement())
+            break;
+
+        if (isStartElement()) {
+            if (name() == QLatin1String("title"))
+                readTitle(folder);
+            else if (name() == QLatin1String("desc"))
+                readDescription(folder);
+            else if (name() == QLatin1String("folder"))
+                readFolder(folder);
+            else if (name() == QLatin1String("bookmark"))
+                readBookmarkNode(folder);
+            else if (name() == QLatin1String("separator"))
+                readSeparator(folder);
+            else
+                skipUnknownElement();
+        }
+    }
+}
+
+    void readBookmarkNode(BookmarkNode *parent)
+{
+    Q_ASSERT(isStartElement() && name() == QLatin1String("bookmark"));
+    BookmarkNode *bookmark = new BookmarkNode(BookmarkNode::Bookmark, parent);
+    bookmark.url = attributes().value(QLatin1String("href")).toString();
+    while (!atEnd()) {
+        readNext();
+        if (isEndElement())
+            break;
+
+        if (isStartElement()) {
+            if (name() == QLatin1String("title"))
+                readTitle(bookmark);
+            else if (name() == QLatin1String("desc"))
+                readDescription(bookmark);
+            else
+                skipUnknownElement();
+        }
+    }
+    if (bookmark.title.isEmpty())
+        bookmark.title = QObject::tr("Unknown title");
+}
+
+};
+
+import QtCore.QXmlStreamWriter;
+
+class XbelWriter : public QXmlStreamWriter
+{
+public:
+    this()
+{
+    setAutoFormatting(true);
+}
+    bool write(const QString &fileName, const BookmarkNode *root);
+{
+    QFile file(fileName);
+    if (!root || !file.open(QFile::WriteOnly))
+        return false;
+    return write(&file, root);
+}
+
+bool write(QIODevice *device, const BookmarkNode *root);
+{
+    setDevice(device);
+
+    writeStartDocument();
+    writeDTD(QLatin1String("<!DOCTYPE xbel>"));
+    writeStartElement(QLatin1String("xbel"));
+    writeAttribute(QLatin1String("version"), QLatin1String("1.0"));
+    if (root.type() == BookmarkNode::Root) {
+        for (int i = 0; i < root.children().count(); ++i)
+            writeItem(root.children().at(i));
+    } else {
+        writeItem(root);
+    }
+
+    writeEndDocument();
+    return true;
+}
+
+
+private:
+    void writeItem(const BookmarkNode *parent)
+{
+    switch (parent.type()) {
+    case BookmarkNode::Folder:
+        writeStartElement(QLatin1String("folder"));
+        writeAttribute(QLatin1String("folded"), parent.expanded ? QLatin1String("no") : QLatin1String("yes"));
+        writeTextElement(QLatin1String("title"), parent.title);
+        for (int i = 0; i < parent.children().count(); ++i)
+            writeItem(parent.children().at(i));
+        writeEndElement();
+        break;
+    case BookmarkNode::Bookmark:
+        writeStartElement(QLatin1String("bookmark"));
+        if (!parent.url.isEmpty())
+            writeAttribute(QLatin1String("href"), parent.url);
+        writeTextElement(QLatin1String("title"), parent.title);
+        if (!parent.desc.isEmpty())
+            writeAttribute(QLatin1String("desc"), parent.desc);
+        writeEndElement();
+        break;
+    case BookmarkNode::Separator:
+        writeEmptyElement(QLatin1String("separator"));
+        break;
+    default:
+        break;
+    }
+}
+}