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/* This file is part of the KDE project
Copyright (C) 2010 KO GmbH <ben.martin@kogmbh.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __rdf_KoSopranoTableModel_h__
#define __rdf_KoSopranoTableModel_h__
#include <QAbstractTableModel>
#include <Soprano/Soprano>
class KoDocumentRdf;
/**
* @short custom TableModel for editing a Soprano::Model
* @author Ben Martin <ben.martin@kogmbh.com>
* @see KoDocumentRdf
*
* Various columns are exposed to allow editing of not only
* the triple itself but also the object type, data type,
* and storage location of the triple.
*/
class KoSopranoTableModel : public QAbstractTableModel
{
KoDocumentRdf *m_rdf;
/**
* Because we need to be able to lookup triples by
* row number, a QList is created giving efficient index
* lookup for statements. Note that Soprano::Statement
* uses pimpl so we are not really copying statements here.
*/
QList<Soprano::Statement> m_statementIndex;
/**
* True if the statement is stored in content.xml
*/
bool isInlineRdf(Soprano::Statement st) const;
public:
KoSopranoTableModel(KoDocumentRdf* rdf);
/**
* Get the RDF model we this class is showing.
* You should not delete the return value.
*/
Soprano::Model *model() const;
enum {
ColIsValid = 0, // Is this triple valid
ColSubj, // subject
ColPred, // predicate
ColObj, // object
ColObjType, // string for type, eg, URI, Literal, Blank Node
ColObjXsdType, // XSD type URI for object
ColCtx, // Graph context for triple
ColCount // NOT A COLUMN but the size.
};
/**
* Convenience method, same as m_rdf->getPrefixMapping()
*/
QString URItoPrefexedLocalname(const QString &uri) const;
/**
* Convenience method, same as m_rdf->getPrefixMapping()
*/
QString PrefexedLocalnameToURI(const QString &pname);
virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
virtual int rowCount(const QModelIndex &parent = QModelIndex()) const;
int columnCount(const QModelIndex &parent = QModelIndex()) const;
QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
Qt::ItemFlags flags(const QModelIndex &index) const;
/**
* You MUST use this method if you want to change a Statement.
*
* Used by setData() to remove the old statement and replace it with the new 'n' one.
* The internal m_statementIndex int->statement is updated
* as well as the dataChanged signal emitted
*/
bool setDataUpdateTriple(const QModelIndex &index, Soprano::Statement &old, Soprano::Statement &n);
bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
/**
* Add the statement 'st' to the model as the new last row.
*/
int insertStatement(Soprano::Statement st);
/**
* Copy all the triples in srclist to be new rows in the model.
* Note that the object value is modified to contain a unique
* postfix so that the new triple copies can be inserted into
* the Rdf model. It is a copy in a looser sense of the word.
*/
QModelIndexList copyTriples(const QModelIndexList &srclist);
/**
* Delete all the triples in srclist from the model.
*/
void deleteTriples(const QModelIndexList &srclist);
/**
* Find the statement at the given row.
*/
Soprano::Statement statementAtIndex(const QModelIndex &mi) const;
/**
* The number of statements that have been partially or invalidly
* edited.
*
* @see invalidStatementList()
*/
int invalidStatementCount() const;
/**
* All the statements in the UI which are not valid Soprano::Statements
*
* @see invalidStatementCount()
*/
QModelIndexList invalidStatementList() const;
};
#endif
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