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# treemodelcompleter.cpp Example File
tools/treemodelcompleter/treemodelcompleter.cpp

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     #include "treemodelcompleter.h"
     #include <QStringList>

     TreeModelCompleter::TreeModelCompleter(QObject *parent)
         : QCompleter(parent)
     {
     }

     TreeModelCompleter::TreeModelCompleter(QAbstractItemModel *model, QObject *parent)
         : QCompleter(model, parent)
     {
     }

     void TreeModelCompleter::setSeparator(const QString &separator)
     {
         sep = separator;
     }

     QString TreeModelCompleter::separator() const
     {
         return sep;
     }

     QStringList TreeModelCompleter::splitPath(const QString &path) const
     {
         if (sep.isNull()) {
             return QCompleter::splitPath(path);
         }

         return path.split(sep);
     }

     QString TreeModelCompleter::pathFromIndex(const QModelIndex &index) const
     {
         if (sep.isNull()) {
             return QCompleter::pathFromIndex(index);
         }

         // navigate up and accumulate data
         QStringList dataList;
         for (QModelIndex i = index; i.isValid(); i = i.parent()) {
             dataList.prepend(model()->data(i, completionRole()).toString());
         }

         return dataList.join(sep);
     }