Chris@147: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@147: 
Chris@147: /*
Chris@147:     Sonic Visualiser
Chris@147:     An audio file viewer and annotation editor.
Chris@147:     Centre for Digital Music, Queen Mary, University of London.
Chris@147:     This file copyright 2006 Chris Cannam.
Chris@147:     
Chris@147:     This program is free software; you can redistribute it and/or
Chris@147:     modify it under the terms of the GNU General Public License as
Chris@147:     published by the Free Software Foundation; either version 2 of the
Chris@147:     License, or (at your option) any later version.  See the file
Chris@147:     COPYING included with this distribution for more information.
Chris@147: */
Chris@147: 
Chris@147: #ifndef _SPARSE_MODEL_H_
Chris@147: #define _SPARSE_MODEL_H_
Chris@147: 
Chris@150: #include "Model.h"
Chris@147: #include "base/Command.h"
Chris@147: 
Chris@147: #include <iostream>
Chris@147: 
Chris@147: #include <set>
Chris@147: #include <QMutex>
Chris@147: #include <QTextStream>
Chris@147: 
Chris@147: 
Chris@147: /**
Chris@147:  * Model containing sparse data (points with some properties).  The
Chris@147:  * properties depend on the point type.
Chris@147:  */
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: class SparseModel : public Model
Chris@147: {
Chris@147: public:
Chris@147:     SparseModel(size_t sampleRate, size_t resolution,
Chris@147: 		bool notifyOnAdd = true);
Chris@147:     virtual ~SparseModel() { }
Chris@147:     
Chris@147:     virtual bool isOK() const { return true; }
Chris@147:     virtual size_t getStartFrame() const;
Chris@147:     virtual size_t getEndFrame() const;
Chris@147:     virtual size_t getSampleRate() const { return m_sampleRate; }
Chris@147: 
Chris@147:     virtual Model *clone() const;
Chris@147: 
Chris@147:     // Number of frames of the underlying sample rate that this model
Chris@147:     // is capable of resolving to.  For example, if m_resolution == 10
Chris@147:     // then every point in this model will be at a multiple of 10
Chris@147:     // sample frames and should be considered to cover a window ending
Chris@147:     // 10 sample frames later.
Chris@147:     virtual size_t getResolution() const {
Chris@147:         return m_resolution ? m_resolution : 1;
Chris@147:     }
Chris@147:     virtual void setResolution(size_t resolution);
Chris@147: 
Chris@147:     typedef PointType Point;
Chris@147:     typedef std::multiset<PointType,
Chris@147: 			  typename PointType::OrderComparator> PointList;
Chris@147:     typedef typename PointList::iterator PointListIterator;
Chris@147: 
Chris@147:     /**
Chris@147:      * Return whether the model is empty or not.
Chris@147:      */
Chris@147:     virtual bool isEmpty() const;
Chris@147: 
Chris@147:     /**
Chris@147:      * Get the total number of points in the model.
Chris@147:      */
Chris@147:     virtual size_t getPointCount() const;
Chris@147: 
Chris@147:     /**
Chris@147:      * Get all of the points in this model between the given
Chris@147:      * boundaries (in frames), as well as up to two points before and
Chris@147:      * after the boundaries.  If you need exact boundaries, check the
Chris@147:      * point coordinates in the returned list.
Chris@147:      */
Chris@147:     virtual PointList getPoints(long start, long end) const;
Chris@147: 
Chris@147:     /**
Chris@147:      * Get all points that cover the given frame number, taking the
Chris@147:      * resolution of the model into account.
Chris@147:      */
Chris@147:     virtual PointList getPoints(long frame) const;
Chris@147: 
Chris@147:     /**
Chris@297:      * Get all points.
Chris@297:      */
Chris@297:     virtual const PointList &getPoints() const { return m_points; }
Chris@297: 
Chris@297:     /**
Chris@147:      * Return all points that share the nearest frame number prior to
Chris@147:      * the given one at which there are any points.
Chris@147:      */
Chris@147:     virtual PointList getPreviousPoints(long frame) const;
Chris@147: 
Chris@147:     /**
Chris@147:      * Return all points that share the nearest frame number
Chris@147:      * subsequent to the given one at which there are any points.
Chris@147:      */
Chris@147:     virtual PointList getNextPoints(long frame) const;
Chris@147: 
Chris@147:     /**
Chris@147:      * Remove all points.
Chris@147:      */
Chris@147:     virtual void clear();
Chris@147: 
Chris@147:     /**
Chris@147:      * Add a point.
Chris@147:      */
Chris@147:     virtual void addPoint(const PointType &point);
Chris@147: 
Chris@147:     /** 
Chris@147:      * Remove a point.  Points are not necessarily unique, so this
Chris@147:      * function will remove the first point that compares equal to the
Chris@147:      * supplied one using Point::Comparator.  Other identical points
Chris@147:      * may remain in the model.
Chris@147:      */
Chris@147:     virtual void deletePoint(const PointType &point);
Chris@147: 
Chris@297:     virtual bool isReady(int *completion = 0) const {
Chris@297:         bool ready = isOK() && (m_completion == 100);
Chris@297:         if (completion) *completion = m_completion;
Chris@297:         return ready;
Chris@297:     }
Chris@297: 
Chris@333:     virtual void setCompletion(int completion, bool update = true);
Chris@147:     virtual int getCompletion() const { return m_completion; }
Chris@147: 
Chris@147:     virtual bool hasTextLabels() const { return m_hasTextLabels; }
Chris@147: 
Chris@345:     QString getTypeName() const { return tr("Sparse"); }
Chris@345: 
Chris@407:     virtual QString getXmlOutputType() const { return "sparse"; }
Chris@407: 
Chris@147:     virtual void toXml(QTextStream &out,
Chris@147:                        QString indent = "",
Chris@147:                        QString extraAttributes = "") const;
Chris@147: 
Chris@147:     virtual QString toDelimitedDataString(QString delimiter) const
Chris@147:     { 
Chris@147:         QString s;
Chris@147:         for (PointListIterator i = m_points.begin(); i != m_points.end(); ++i) {
Chris@147:             s += i->toDelimitedDataString(delimiter, m_sampleRate) + "\n";
Chris@147:         }
Chris@147:         return s;
Chris@147:     }
Chris@147: 
Chris@147:     /**
Chris@147:      * Command to add a point, with undo.
Chris@147:      */
Chris@147:     class AddPointCommand : public Command
Chris@147:     {
Chris@147:     public:
Chris@147: 	AddPointCommand(SparseModel<PointType> *model,
Chris@147: 			const PointType &point,
Chris@147:                         QString name = "") :
Chris@147: 	    m_model(model), m_point(point), m_name(name) { }
Chris@147: 
Chris@147: 	virtual QString getName() const {
Chris@147:             return (m_name == "" ? tr("Add Point") : m_name);
Chris@147:         }
Chris@147: 
Chris@147: 	virtual void execute() { m_model->addPoint(m_point); }
Chris@147: 	virtual void unexecute() { m_model->deletePoint(m_point); }
Chris@147: 
Chris@147: 	const PointType &getPoint() const { return m_point; }
Chris@147: 
Chris@147:     private:
Chris@147: 	SparseModel<PointType> *m_model;
Chris@147: 	PointType m_point;
Chris@147:         QString m_name;
Chris@147:     };
Chris@147: 
Chris@147: 
Chris@147:     /**
Chris@147:      * Command to remove a point, with undo.
Chris@147:      */
Chris@147:     class DeletePointCommand : public Command
Chris@147:     {
Chris@147:     public:
Chris@147: 	DeletePointCommand(SparseModel<PointType> *model,
Chris@147: 			   const PointType &point) :
Chris@147: 	    m_model(model), m_point(point) { }
Chris@147: 
Chris@147: 	virtual QString getName() const { return tr("Delete Point"); }
Chris@147: 
Chris@147: 	virtual void execute() { m_model->deletePoint(m_point); }
Chris@147: 	virtual void unexecute() { m_model->addPoint(m_point); }
Chris@147: 
Chris@147: 	const PointType &getPoint() const { return m_point; }
Chris@147: 
Chris@147:     private:
Chris@147: 	SparseModel<PointType> *m_model;
Chris@147: 	PointType m_point;
Chris@147:     };
Chris@147: 
Chris@147:     
Chris@147:     /**
Chris@147:      * Command to add or remove a series of points, with undo.
Chris@147:      * Consecutive add/remove pairs for the same point are collapsed.
Chris@147:      */
Chris@147:     class EditCommand : public MacroCommand
Chris@147:     {
Chris@147:     public:
Chris@147: 	EditCommand(SparseModel<PointType> *model, QString commandName);
Chris@147: 
Chris@147: 	virtual void addPoint(const PointType &point);
Chris@147: 	virtual void deletePoint(const PointType &point);
Chris@147: 
Chris@147: 	/**
Chris@147: 	 * Stack an arbitrary other command in the same sequence.
Chris@147: 	 */
Chris@147: 	virtual void addCommand(Command *command) { addCommand(command, true); }
Chris@147: 
Chris@147: 	/**
Chris@387: 	 * If any points have been added or deleted, return this
Chris@387: 	 * command (so the caller can add it to the command history).
Chris@416: 	 * Otherwise delete the command and return NULL.
Chris@147: 	 */
Chris@416: 	virtual EditCommand *finish();
Chris@147: 
Chris@147:     protected:
Chris@147: 	virtual void addCommand(Command *command, bool executeFirst);
Chris@147: 
Chris@147: 	SparseModel<PointType> *m_model;
Chris@147:     };
Chris@147: 
Chris@147: 
Chris@147:     /**
Chris@147:      * Command to relabel a point.
Chris@147:      */
Chris@147:     class RelabelCommand : public Command
Chris@147:     {
Chris@147:     public:
Chris@147: 	RelabelCommand(SparseModel<PointType> *model,
Chris@147: 		       const PointType &point,
Chris@147: 		       QString newLabel) :
Chris@147: 	    m_model(model), m_oldPoint(point), m_newPoint(point) {
Chris@147: 	    m_newPoint.label = newLabel;
Chris@147: 	}
Chris@147: 
Chris@147: 	virtual QString getName() const { return tr("Re-Label Point"); }
Chris@147: 
Chris@147: 	virtual void execute() { 
Chris@147: 	    m_model->deletePoint(m_oldPoint);
Chris@147: 	    m_model->addPoint(m_newPoint);
Chris@147: 	    std::swap(m_oldPoint, m_newPoint);
Chris@147: 	}
Chris@147: 
Chris@147: 	virtual void unexecute() { execute(); }
Chris@147: 
Chris@147:     private:
Chris@147: 	SparseModel<PointType> *m_model;
Chris@147: 	PointType m_oldPoint;
Chris@147: 	PointType m_newPoint;
Chris@147:     };
Chris@147: 
Chris@147:     
Chris@147: 
Chris@147: protected:
Chris@147:     size_t m_sampleRate;
Chris@147:     size_t m_resolution;
Chris@147:     bool m_notifyOnAdd;
Chris@147:     long m_sinceLastNotifyMin;
Chris@147:     long m_sinceLastNotifyMax;
Chris@147:     bool m_hasTextLabels;
Chris@147: 
Chris@147:     PointList m_points;
Chris@147:     size_t m_pointCount;
Chris@147:     mutable QMutex m_mutex;
Chris@147:     int m_completion;
Chris@147: };
Chris@147: 
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: SparseModel<PointType>::SparseModel(size_t sampleRate,
Chris@147:                                     size_t resolution,
Chris@147:                                     bool notifyOnAdd) :
Chris@147:     m_sampleRate(sampleRate),
Chris@147:     m_resolution(resolution),
Chris@147:     m_notifyOnAdd(notifyOnAdd),
Chris@147:     m_sinceLastNotifyMin(-1),
Chris@147:     m_sinceLastNotifyMax(-1),
Chris@147:     m_hasTextLabels(false),
Chris@147:     m_pointCount(0),
Chris@147:     m_completion(100)
Chris@147: {
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: size_t
Chris@147: SparseModel<PointType>::getStartFrame() const
Chris@147: {
Chris@147:     QMutexLocker locker(&m_mutex);
Chris@147:     size_t f = 0;
Chris@147:     if (!m_points.empty()) {
Chris@147: 	f = m_points.begin()->frame;
Chris@147:     }
Chris@147:     return f;
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: size_t
Chris@147: SparseModel<PointType>::getEndFrame() const
Chris@147: {
Chris@147:     QMutexLocker locker(&m_mutex);
Chris@147:     size_t f = 0;
Chris@147:     if (!m_points.empty()) {
Chris@147: 	PointListIterator i(m_points.end());
Chris@147: 	f = (--i)->frame;
Chris@147:     }
Chris@147:     return f;
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: Model *
Chris@147: SparseModel<PointType>::clone() const
Chris@147: {
Chris@147:     SparseModel<PointType> *model =
Chris@147: 	new SparseModel<PointType>(m_sampleRate, m_resolution, m_notifyOnAdd);
Chris@147:     model->m_points = m_points;
Chris@147:     model->m_pointCount = m_pointCount;
Chris@147:     return model;
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: bool
Chris@147: SparseModel<PointType>::isEmpty() const
Chris@147: {
Chris@147:     return m_pointCount == 0;
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: size_t
Chris@147: SparseModel<PointType>::getPointCount() const
Chris@147: {
Chris@147:     return m_pointCount;
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: typename SparseModel<PointType>::PointList
Chris@147: SparseModel<PointType>::getPoints(long start, long end) const
Chris@147: {
Chris@147:     if (start > end) return PointList();
Chris@147:     QMutexLocker locker(&m_mutex);
Chris@147: 
Chris@147:     PointType startPoint(start), endPoint(end);
Chris@147:     
Chris@147:     PointListIterator startItr = m_points.lower_bound(startPoint);
Chris@147:     PointListIterator   endItr = m_points.upper_bound(endPoint);
Chris@147: 
Chris@147:     if (startItr != m_points.begin()) --startItr;
Chris@147:     if (startItr != m_points.begin()) --startItr;
Chris@147:     if (endItr != m_points.end()) ++endItr;
Chris@147:     if (endItr != m_points.end()) ++endItr;
Chris@147: 
Chris@147:     PointList rv;
Chris@147: 
Chris@147:     for (PointListIterator i = startItr; i != endItr; ++i) {
Chris@147: 	rv.insert(*i);
Chris@147:     }
Chris@147: 
Chris@147:     return rv;
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: typename SparseModel<PointType>::PointList
Chris@147: SparseModel<PointType>::getPoints(long frame) const
Chris@147: {
Chris@147:     QMutexLocker locker(&m_mutex);
Chris@147: 
Chris@147:     if (m_resolution == 0) return PointList();
Chris@147: 
Chris@147:     long start = (frame / m_resolution) * m_resolution;
Chris@147:     long end = start + m_resolution;
Chris@147: 
Chris@147:     PointType startPoint(start), endPoint(end);
Chris@147:     
Chris@147:     PointListIterator startItr = m_points.lower_bound(startPoint);
Chris@147:     PointListIterator   endItr = m_points.upper_bound(endPoint);
Chris@147: 
Chris@147:     PointList rv;
Chris@147: 
Chris@147:     for (PointListIterator i = startItr; i != endItr; ++i) {
Chris@147: 	rv.insert(*i);
Chris@147:     }
Chris@147: 
Chris@147:     return rv;
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: typename SparseModel<PointType>::PointList
Chris@147: SparseModel<PointType>::getPreviousPoints(long originFrame) const
Chris@147: {
Chris@147:     QMutexLocker locker(&m_mutex);
Chris@147: 
Chris@147:     PointType lookupPoint(originFrame);
Chris@147:     PointList rv;
Chris@147: 
Chris@147:     PointListIterator i = m_points.lower_bound(lookupPoint);
Chris@147:     if (i == m_points.begin()) return rv;
Chris@147: 
Chris@147:     --i;
Chris@147:     long frame = i->frame;
Chris@147:     while (i->frame == frame) {
Chris@147: 	rv.insert(*i);
Chris@147: 	if (i == m_points.begin()) break;
Chris@147: 	--i;
Chris@147:     }
Chris@147: 
Chris@147:     return rv;
Chris@147: }
Chris@147:  
Chris@147: template <typename PointType>
Chris@147: typename SparseModel<PointType>::PointList
Chris@147: SparseModel<PointType>::getNextPoints(long originFrame) const
Chris@147: {
Chris@147:     QMutexLocker locker(&m_mutex);
Chris@147: 
Chris@147:     PointType lookupPoint(originFrame);
Chris@147:     PointList rv;
Chris@147: 
Chris@147:     PointListIterator i = m_points.upper_bound(lookupPoint);
Chris@147:     if (i == m_points.end()) return rv;
Chris@147: 
Chris@147:     long frame = i->frame;
Chris@147:     while (i != m_points.end() && i->frame == frame) {
Chris@147: 	rv.insert(*i);
Chris@147: 	++i;
Chris@147:     }
Chris@147: 
Chris@147:     return rv;
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: void
Chris@147: SparseModel<PointType>::setResolution(size_t resolution)
Chris@147: {
Chris@147:     {
Chris@147: 	QMutexLocker locker(&m_mutex);
Chris@147: 	m_resolution = resolution;
Chris@147:     }
Chris@147:     emit modelChanged();
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: void
Chris@147: SparseModel<PointType>::clear()
Chris@147: {
Chris@147:     {
Chris@147: 	QMutexLocker locker(&m_mutex);
Chris@147: 	m_points.clear();
Chris@147:         m_pointCount = 0;
Chris@147:     }
Chris@147:     emit modelChanged();
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: void
Chris@147: SparseModel<PointType>::addPoint(const PointType &point)
Chris@147: {
Chris@147:     {
Chris@147: 	QMutexLocker locker(&m_mutex);
Chris@147: 	m_points.insert(point);
Chris@147:         m_pointCount++;
Chris@338:         if (point.getLabel() != "") m_hasTextLabels = true;
Chris@147:     }
Chris@147: 
Chris@147:     // Even though this model is nominally sparse, there may still be
Chris@147:     // too many signals going on here (especially as they'll probably
Chris@147:     // be queued from one thread to another), which is why we need the
Chris@147:     // notifyOnAdd as an option rather than a necessity (the
Chris@147:     // alternative is to notify on setCompletion).
Chris@147: 
Chris@147:     if (m_notifyOnAdd) {
Chris@147: 	emit modelChanged(point.frame, point.frame + m_resolution);
Chris@147:     } else {
Chris@147: 	if (m_sinceLastNotifyMin == -1 ||
Chris@147: 	    point.frame < m_sinceLastNotifyMin) {
Chris@147: 	    m_sinceLastNotifyMin = point.frame;
Chris@147: 	}
Chris@147: 	if (m_sinceLastNotifyMax == -1 ||
Chris@147: 	    point.frame > m_sinceLastNotifyMax) {
Chris@147: 	    m_sinceLastNotifyMax = point.frame;
Chris@147: 	}
Chris@147:     }
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: void
Chris@147: SparseModel<PointType>::deletePoint(const PointType &point)
Chris@147: {
Chris@147:     {
Chris@147: 	QMutexLocker locker(&m_mutex);
Chris@147: 
Chris@147: 	PointListIterator i = m_points.lower_bound(point);
Chris@147: 	typename PointType::Comparator comparator;
Chris@147: 	while (i != m_points.end()) {
Chris@147: 	    if (i->frame > point.frame) break;
Chris@147: 	    if (!comparator(*i, point) && !comparator(point, *i)) {
Chris@147: 		m_points.erase(i);
Chris@147:                 m_pointCount--;
Chris@147: 		break;
Chris@147: 	    }
Chris@147: 	    ++i;
Chris@147: 	}
Chris@147:     }
Chris@147: //    std::cout << "SparseOneDimensionalModel: emit modelChanged("
Chris@147: //	      << point.frame << ")" << std::endl;
Chris@147:     emit modelChanged(point.frame, point.frame + m_resolution);
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: void
Chris@333: SparseModel<PointType>::setCompletion(int completion, bool update)
Chris@147: {
Chris@301: //    std::cerr << "SparseModel::setCompletion(" << completion << ")" << std::endl;
Chris@191: 
Chris@147:     if (m_completion != completion) {
Chris@147: 	m_completion = completion;
Chris@147: 
Chris@147: 	if (completion == 100) {
Chris@147: 
Chris@297:             if (!m_notifyOnAdd) {
Chris@297:                 emit completionChanged();
Chris@297:             }
Chris@297: 
Chris@147: 	    m_notifyOnAdd = true; // henceforth
Chris@147: 	    emit modelChanged();
Chris@147: 
Chris@147: 	} else if (!m_notifyOnAdd) {
Chris@147: 
Chris@333: 	    if (update &&
Chris@333:                 m_sinceLastNotifyMin >= 0 &&
Chris@147: 		m_sinceLastNotifyMax >= 0) {
Chris@147: 		emit modelChanged(m_sinceLastNotifyMin, m_sinceLastNotifyMax);
Chris@147: 		m_sinceLastNotifyMin = m_sinceLastNotifyMax = -1;
Chris@147: 	    } else {
Chris@147: 		emit completionChanged();
Chris@147: 	    }
Chris@147: 	} else {
Chris@147: 	    emit completionChanged();
Chris@147: 	}	    
Chris@147:     }
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: void
Chris@147: SparseModel<PointType>::toXml(QTextStream &out,
Chris@147:                               QString indent,
Chris@147:                               QString extraAttributes) const
Chris@147: {
Chris@318:     std::cerr << "SparseModel::toXml: extraAttributes = \"" 
Chris@318:               << extraAttributes.toStdString() << std::endl;
Chris@318: 
Chris@407:     QString type = getXmlOutputType();
Chris@407: 
Chris@147:     Model::toXml
Chris@147: 	(out,
Chris@147:          indent,
Chris@407: 	 QString("type=\"%1\" dimensions=\"%2\" resolution=\"%3\" notifyOnAdd=\"%4\" dataset=\"%5\" %6")
Chris@407:          .arg(type)
Chris@147: 	 .arg(PointType(0).getDimensions())
Chris@147: 	 .arg(m_resolution)
Chris@147: 	 .arg(m_notifyOnAdd ? "true" : "false")
Chris@147: 	 .arg(getObjectExportId(&m_points))
Chris@147: 	 .arg(extraAttributes));
Chris@147: 
Chris@147:     out << indent;
Chris@147:     out << QString("<dataset id=\"%1\" dimensions=\"%2\">\n")
Chris@147: 	.arg(getObjectExportId(&m_points))
Chris@147: 	.arg(PointType(0).getDimensions());
Chris@147: 
Chris@147:     for (PointListIterator i = m_points.begin(); i != m_points.end(); ++i) {
Chris@314:         i->toXml(out, indent + "  ");
Chris@147:     }
Chris@147: 
Chris@147:     out << indent;
Chris@147:     out << "</dataset>\n";
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: SparseModel<PointType>::EditCommand::EditCommand(SparseModel *model,
Chris@147:                                                  QString commandName) :
Chris@147:     MacroCommand(commandName),
Chris@147:     m_model(model)
Chris@147: {
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: void
Chris@147: SparseModel<PointType>::EditCommand::addPoint(const PointType &point)
Chris@147: {
Chris@147:     addCommand(new AddPointCommand(m_model, point), true);
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: void
Chris@147: SparseModel<PointType>::EditCommand::deletePoint(const PointType &point)
Chris@147: {
Chris@147:     addCommand(new DeletePointCommand(m_model, point), true);
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@416: typename SparseModel<PointType>::EditCommand *
Chris@147: SparseModel<PointType>::EditCommand::finish()
Chris@147: {
Chris@147:     if (!m_commands.empty()) {
Chris@387:         return this;
Chris@147:     } else {
Chris@147:         delete this;
Chris@389:         return 0;
Chris@147:     }
Chris@147: }
Chris@147: 
Chris@147: template <typename PointType>
Chris@147: void
Chris@147: SparseModel<PointType>::EditCommand::addCommand(Command *command,
Chris@147: 						bool executeFirst)
Chris@147: {
Chris@147:     if (executeFirst) command->execute();
Chris@147: 
Chris@147:     if (!m_commands.empty()) {
Chris@147: 	DeletePointCommand *dpc = dynamic_cast<DeletePointCommand *>(command);
Chris@147: 	if (dpc) {
Chris@147: 	    AddPointCommand *apc = dynamic_cast<AddPointCommand *>
Chris@147: 		(m_commands[m_commands.size() - 1]);
Chris@147: 	    typename PointType::Comparator comparator;
Chris@147: 	    if (apc) {
Chris@147: 		if (!comparator(apc->getPoint(), dpc->getPoint()) &&
Chris@147: 		    !comparator(dpc->getPoint(), apc->getPoint())) {
Chris@147: 		    deleteCommand(apc);
Chris@147: 		    return;
Chris@147: 		}
Chris@147: 	    }
Chris@147: 	}
Chris@147:     }
Chris@147: 
Chris@147:     MacroCommand::addCommand(command);
Chris@147: }
Chris@147: 
Chris@147: 
Chris@147: #endif
Chris@147: 
Chris@147: 
Chris@147: