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/* This file is part of the Calligra project, made within the KDE community.
*
* Copyright (C) 2013 Friedrich W. H. Kossebau <friedrich@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 TEXTDOCUMENTSTRUCTUREMODEL_H
#define TEXTDOCUMENTSTRUCTUREMODEL_H
#include <QAbstractItemModel>
#include <QVector>
#include <QHash>
#include <QPointer>
class QTextDocument;
class QTextFrame;
class QTextBlock;
struct NodeData {
enum Type {Frame, Block};
Type type;
union {
QTextFrame *frame;
int blockNumber;
};
static NodeData fromFrame(QTextFrame *frame);
static NodeData fromBlock(int blockNumber);
};
class TextDocumentStructureModel : public QAbstractItemModel
{
Q_OBJECT
enum Columns {
nameColumn = 0,
endColumn
};
public:
explicit TextDocumentStructureModel(QObject *parent = 0);
virtual ~TextDocumentStructureModel();
public: // QAbstractItemModel API
virtual QModelIndex index(int row, int column, const QModelIndex &parentIndex) const;
virtual QModelIndex parent(const QModelIndex &index) const;
virtual int rowCount(const QModelIndex &index) const;
virtual int columnCount(const QModelIndex &index) const;
virtual QVariant data(const QModelIndex &index, int role) const;
virtual bool hasChildren(const QModelIndex &parent) const;
public:
void setTextDocument(QTextDocument *textDocument);
private Q_SLOTS:
void onContentsChanged();
void onModelReset();
private:
int blockIndex(const QTextBlock &block) const;
int frameIndex(QTextFrame *frame) const;
private:
QPointer<QTextDocument> m_textDocument;
mutable QVector<NodeData> m_nodeDataTable;
mutable QHash<int, int> m_blockNumberTable;
mutable QHash<QTextFrame *, int> m_frameTable;
};
#endif // TEXTDOCUMENTSTRUCTUREMODEL_H
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