filetree.h Example File

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  #include <QtCore/QFileInfo>
  #include <QtCore/QDir>
  #include <QtCore/QVector>
  #include <QtXmlPatterns/QSimpleXmlNodeModel>

  class FileTree : public QSimpleXmlNodeModel
  {
  public:
      FileTree(const QXmlNamePool &namePool);

      QXmlNodeModelIndex nodeFor(const QString &fileName) const;

      virtual QXmlNodeModelIndex::DocumentOrder compareOrder(const QXmlNodeModelIndex&, const QXmlNodeModelIndex&) const;
      virtual QXmlName name(const QXmlNodeModelIndex &node) const;
      virtual QUrl documentUri(const QXmlNodeModelIndex &node) const;
      virtual QXmlNodeModelIndex::NodeKind kind(const QXmlNodeModelIndex &node) const;
      virtual QXmlNodeModelIndex root(const QXmlNodeModelIndex &node) const;
      virtual QVariant typedValue(const QXmlNodeModelIndex &node) const;
  protected:
      virtual QVector<QXmlNodeModelIndex> attributes(const QXmlNodeModelIndex &element) const;
      virtual QXmlNodeModelIndex nextFromSimpleAxis(SimpleAxis, const QXmlNodeModelIndex&) const;

  private:
      enum Type {
          File,
          Directory,
          AttributeFileName,
          AttributeFilePath,
          AttributeSize,
          AttributeMIMEType,
          AttributeSuffix
      };

      inline QXmlNodeModelIndex nextSibling(const QXmlNodeModelIndex &nodeIndex,
                                            const QFileInfo &from,
                                            qint8 offset) const;
      inline const QFileInfo &toFileInfo(const QXmlNodeModelIndex &index) const;
      inline QXmlNodeModelIndex toNodeIndex(const QFileInfo &index,
                                            Type attributeName) const;
      inline QXmlNodeModelIndex toNodeIndex(const QFileInfo &index) const;

      /*
       One possible improvement is to use a hash, and use the &*&value()
       trick to get a pointer, which would be stored in data() instead
       of the index.
      */
      mutable QVector<QFileInfo>  m_fileInfos;
      const QDir::Filters         m_filterAllowAll;
      const QDir::SortFlags       m_sortFlags;
      QVector<QXmlName>           m_names;
  };