annotate base/PropertyContainer.cpp @ 247:21b9b25bff48

* More useful status bar text -- show the current play time and the extents of
  the visible area
* Add update-i18n.sh to update the i18n/ts and qm files -- I can't get qmake
  to do the right thing now that the project file has been split up into
  several project files
* Fix missing Q_OBJECTs, etc, reported by lupdate
* Update Russian translation from AlexandrE

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam and QMUL.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#include "PropertyContainer.h"
#include "CommandHistory.h"
#include "RangeMapper.h"
#include "UnitDatabase.h"

#include <QColor>

#include <iostream>

PropertyContainer::PropertyList
PropertyContainer::getProperties() const
{
    return PropertyList();
}

//QString
//PropertyContainer::getPropertyLabel(const PropertyName &) const
//{
//    return "";
//}

PropertyContainer::PropertyType
PropertyContainer::getPropertyType(const PropertyName &) const
{
    return InvalidProperty;
}

QString
PropertyContainer::getPropertyGroupName(const PropertyName &) const
{
    return QString();
}

int
PropertyContainer::getPropertyRangeAndValue(const PropertyName &,
                                            int *min, int *max, int *deflt) const
{
    if (min) *min = 0;
    if (max) *max = 0;
    if (deflt) *deflt = 0;
    return 0;
}

QString
PropertyContainer::getPropertyValueLabel(const PropertyName &, int) const
{
    return QString();
}

RangeMapper *
PropertyContainer::getNewPropertyRangeMapper(const PropertyName &) const
{
    return 0;
}

void
PropertyContainer::setProperty(const PropertyName &name, int) 
{
    std::cerr << "WARNING: PropertyContainer[" << getPropertyContainerName().toStdString() << "]::setProperty(" << name.toStdString() << "): no implementation in subclass!" << std::endl;
}

void
PropertyContainer::setPropertyWithCommand(const PropertyName &name, int value)
{
    int currentValue = getPropertyRangeAndValue(name, 0, 0, 0);
    if (value == currentValue) return;

    CommandHistory::getInstance()->addCommand
	(new SetPropertyCommand(this, name, value), true, true); // bundled
}
 
void
PropertyContainer::setProperty(QString nameString, QString valueString)
{
    PropertyName name;
    int value;
    if (!convertPropertyStrings(nameString, valueString, name, value)) {
        std::cerr << "WARNING: PropertyContainer::setProperty(\""
                  << nameString.toStdString() << "\", \""
                  << valueString.toStdString()
                  << "\"): Name and value conversion failed" << std::endl;
        return;
    }
    setProperty(name, value);
}
 
void
PropertyContainer::setPropertyWithCommand(QString nameString, QString valueString)
{
    PropertyName name;
    int value;
    if (!convertPropertyStrings(nameString, valueString, name, value)) {
        std::cerr << "WARNING: PropertyContainer::setPropertyWithCommand(\""
                  << nameString.toStdString() << "\", \""
                  << valueString.toStdString()
                  << "\"): Name and value conversion failed" << std::endl;
        return;
    }
    setPropertyWithCommand(name, value);
}

bool
PropertyContainer::convertPropertyStrings(QString nameString, QString valueString,
                                          PropertyName &name, int &value)
{
    PropertyList pl = getProperties();

    QString adjusted = nameString.trimmed();
    adjusted.replace('_', ' ');
    adjusted.replace('-', ' ');
    
    name = "";

    for (PropertyList::iterator pli = pl.begin(); pli != pl.end(); ++pli) {

        QString label = getPropertyLabel(*pli);

        if (label != "" && (nameString == label || adjusted == label)) {
            name = *pli;
            break;
        } else if (nameString == *pli) {
            name = *pli;
            break;
        }
    }

    if (name == "") {
        std::cerr << "PropertyContainer::convertPropertyStrings: Unable to match name string \"" << nameString.toStdString() << "\"" << std::endl;
        return false;
    }

    value = 0;
    bool success = false;
    
    bool isDouble = false;
    double dval = valueString.toDouble(&isDouble);

    switch (getPropertyType(name)) {

    case ToggleProperty:
        if (valueString == tr("yes") || 
            valueString == tr("on") ||
            valueString == tr("true")) {
            value = 1; success = true;
        } else if (valueString == tr("no") ||
                   valueString == tr("off") ||
                   valueString == tr("false")) {
            value = 0; success = true;
        }
        break;

    case RangeProperty:
        if (isDouble) {
            RangeMapper *mapper = getNewPropertyRangeMapper(name);
            if (mapper) {
                value = mapper->getPositionForValue(dval);
                delete mapper;
                success = true;
            }
        }
        break;

    case ValueProperty:
    {
        int min, max;
        getPropertyRangeAndValue(name, &min, &max, 0);
        for (int i = min; i <= max; ++i) {
            if (valueString == getPropertyValueLabel(name, i)) {
                value = i;
                success = true;
                break;
            }
        }
        break;
    }

    case ColourProperty:
    {
        QColor c(valueString);
        if (c.isValid()) {
            value = c.rgb();
            success = true;
        }
        break;
    }
        
    case UnitsProperty:
        value = UnitDatabase::getInstance()->getUnitId(valueString, false);
        if (value >= 0) success = true;
        else value = 0;
        break;

    case InvalidProperty:
        std::cerr << "PropertyContainer::convertPropertyStrings: Invalid property name \"" << name.toStdString() << "\"" << std::endl;
        return false;
    }

    if (success) return true;

    int min, max;
    getPropertyRangeAndValue(name, &min, &max, 0);
    
    bool ok = false;
    int i = valueString.toInt(&ok);
    if (!ok) {
        std::cerr << "PropertyContainer::convertPropertyStrings: Unable to parse value string \"" << valueString.toStdString() << "\"" << std::endl;
        return false;
    } else if (i < min || i > max) {
        std::cerr << "PropertyContainer::convertPropertyStrings: Property value \"" << i << "\" outside valid range " << min << " to " << max << std::endl;
        return false;
    }

    value = i;
    return true;
}

PropertyContainer::SetPropertyCommand::SetPropertyCommand(PropertyContainer *pc,
							  const PropertyName &pn,
							  int value) :
    m_pc(pc),
    m_pn(pn),
    m_value(value),
    m_oldValue(0)
{
}

void
PropertyContainer::SetPropertyCommand::execute()
{
    m_oldValue = m_pc->getPropertyRangeAndValue(m_pn, 0, 0, 0);
    m_pc->setProperty(m_pn, m_value);
}

void
PropertyContainer::SetPropertyCommand::unexecute() 
{
    m_pc->setProperty(m_pn, m_oldValue);
}

QString
PropertyContainer::SetPropertyCommand::getName() const
{
    return tr("Set %1 Property").arg(m_pn);
}