UnitComboBox Class Reference

A QComboBox that displays units. More...

#include <unitcombobox.h>

Inheritance diagram for UnitComboBox:

Collaboration diagram for UnitComboBox:

List of all members.

Public Member Functions
	UnitComboBox (ConvertableUnitModel *model, QWidget *parent=0)
void	setTreeIdConstraint (const int &tree_id, const bool &constrainUnitTo=true, const bool &showUnitFrom=true, const bool &calibrationUnit=false)
void	setCurrentUnitFromId (int unit_from_id)
int	currentUnitFromId () const
int	currentUnitToId () const
void	reset ()
void	setModel (ConvertableUnitModel *model)
ConvertableUnitModel *	model ()

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Detailed Description

A QComboBox that displays units.

This class displays the UnitFromSymbols which are convertable and possibly constrained with a UnitToSymbol.

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Constructor & Destructor Documentation

UnitComboBox::UnitComboBox	(	ConvertableUnitModel *	model,
		QWidget *	parent = 0
	)

                                                                                 : QComboBox(parent)
{
    Q_ASSERT(model);
    setModel(model);
}

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Member Function Documentation

int UnitComboBox::currentUnitFromId

(

)

const

Referenced by DataHeaderSection::getSqlForColumn(), and setTreeIdConstraint().

{
    if (currentIndex() == -1) return 0;
    return itemData(currentIndex(), ConvertableUnitModel::UnitFromId).toInt();
}

int UnitComboBox::currentUnitToId

(

)

const

Referenced by DataHeaderSection::getSqlForColumn().

{
    if (currentIndex() == -1) return 0;
    return itemData(currentIndex(), ConvertableUnitModel::UnitToId).toInt();
}

ConvertableUnitModel * UnitComboBox::model

(

)

Reimplemented from QComboBox.

Referenced by ImportFileHeaderSection::adjustContent(), DataHeaderSection::getSqlForColumn(), reset(), and setTreeIdConstraint().

{
    ConvertableUnitModel *model = dynamic_cast<ConvertableUnitModel*>(QComboBox::model());
    Q_ASSERT(model);
    return model;
}

void UnitComboBox::reset

(

)

Referenced by ImportFileHeaderSection::adjustContent().

{
    model()->unconstrain();
}

void UnitComboBox::setCurrentUnitFromId

(

int

unit_from_id

)

Referenced by ImportFileHeaderSection::adjustContent(), and setTreeIdConstraint().

{
    int index = findData(QVariant::fromValue(unit_from_id), ConvertableUnitModel::UnitFromId);
    //qDebug() << "In ImportFileHeaderSection " << logicalIndex << " searching in unitComboBox unit_id: " << data.toInt() << "and finding index: " << index << " of " << unitComboBox->count() << " possible values from query: " << dynamic_cast<ConvertableUnitModel*>(unitComboBox->model())->query().lastQuery();
    setCurrentIndex(index);
}

void UnitComboBox::setModel

(

ConvertableUnitModel *

model

)

Referenced by UnitComboBox().

{
    QComboBox::setModel(model);
}

void UnitComboBox::setTreeIdConstraint	(	const int &	tree_id,
		const bool &	constrainUnitTo = true,
		const bool &	showUnitFrom = true,
		const bool &	calibrationUnit = false
	)

It checks whether the last index was -1 (i.e. invalid unit), If so, then it searches the default unit of the tree_id and sets it. Else it tries to retain the index (i.e. it tries to retain the unit which was selected prior to tree_id change. If it secceeds, then this unit is set. If the unit doesn't exist under this new tree_id, then the default unit is set.

Referenced by ImportFileHeaderSection::adjustContent(), DataHeaderSection::DataHeaderSection(), and DataHeaderSection::onCalibrationSelectionChange().

{
    int index = currentIndex();
    int unit_from_id = currentUnitFromId();
    model()->setConstraint(tree_id, ConvertableUnitModel::ConstraintKindTreeId, constrainUnitTo, showUnitFrom, calibrationUnit);
    if (index == -1) {
        setCurrentConstrainedIndex(); // Index is set to -1 if not found.
    } else {
        setCurrentUnitFromId(unit_from_id); // Index is set to -1 if not found.
        if (currentIndex() == -1) setCurrentConstrainedIndex();
    }
}

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The documentation for this class was generated from the following files:

• unitcombobox.h
• unitcombobox.cpp