lyx_mirror/src/frontends/qt4/TocModel.h

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// -*- C++ -*-
/**
* \file TocModel.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Abdelrazak Younes
*
* Full author contact details are available in file CREDITS.
*/
#ifndef TOCMODEL_H
#define TOCMODEL_H
#include "qt_helpers.h"
#include <QHash>
#include <QStandardItemModel>
class QSortFilterProxyModel;
namespace lyx {
class Buffer;
class BufferView;
class DocIterator;
class Toc;
class TocItem;
namespace frontend {
/// A QStandardItemModel that gives access to the reset method.
/// This is needed in order to fix http://bugzilla.lyx.org/show_bug.cgi?id=3740
class TocTypeModel : public QStandardItemModel
{
public:
///
TocTypeModel(QObject * parent);
///
void reset();
};
/// A class that adapt the TocBackend of a Buffer into standard Qt models for
/// GUI visualisation.
/// There is one TocModel per list in the TocBackend.
class TocModel
{
public:
///
TocModel(QObject * parent);
///
void reset(Toc const & toc);
///
void reset();
///
void updateItem(DocIterator const & dit);
///
void clear();
///
QAbstractItemModel * model();
///
QAbstractItemModel const * model() const;
///
void sort(bool sort_it);
///
bool isSorted() const { return is_sorted_; }
///
TocItem const & tocItem(QModelIndex const & index) const;
///
QModelIndex modelIndex(DocIterator const & dit) const;
///
int modelDepth() const;
private:
///
void populate(unsigned int & index, QModelIndex const & parent);
///
TocTypeModel * model_;
///
QSortFilterProxyModel * sorted_model_;
///
bool is_sorted_;
///
Toc const * toc_;
///
int maxdepth_;
///
int mindepth_;
};
/// A container for the different TocModels.
class TocModels : public QObject
{
Q_OBJECT
public:
///
TocModels();
///
void reset(BufferView const * bv);
///
int depth(QString const & type);
///
QAbstractItemModel * model(QString const & type);
///
QAbstractItemModel * nameModel();
///
QModelIndex currentIndex(QString const & type) const;
///
void goTo(QString const & type, QModelIndex const & index) const;
///
void init(Buffer const & buffer);
///
void updateBackend() const;
///
void updateItem(QString const & type, DocIterator const & dit);
///
void sort(QString const & type, bool sort_it);
///
bool isSorted(QString const & type) const;
/// the item that is currently selected
TocItem const currentItem(QString const & type,
QModelIndex const & index) const;
Q_SIGNALS:
/// Signal that the internal toc_models_ has been reset.
void modelReset();
private:
typedef QHash<QString, TocModel *>::const_iterator const_iterator;
typedef QHash<QString, TocModel *>::iterator iterator;
///
void clear();
///
BufferView const * bv_;
///
QHash<QString, TocModel *> models_;
///
TocTypeModel * names_;
///
QSortFilterProxyModel * names_sorted_;
};
} // namespace frontend
} // namespace lyx
#endif // TOCMODEL_H