main.cpp

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#include <QApplication>
#include <QMap>
#include <QDoubleSpinBox>
#include "qtpropertybrowser.h"
#include "qteditorfactory.h"
#include "qttreepropertybrowser.h"
 
class DecoratedDoublePropertyManager : public QtDoublePropertyManager
{
    Q_OBJECT
public:
    DecoratedDoublePropertyManager(QObject* parent = 0);
    ~DecoratedDoublePropertyManager();
 
    QString prefix(const QtProperty* property) const;
    QString suffix(const QtProperty* property) const;
public Q_SLOTS:
    void setPrefix(QtProperty* property, const QString& prefix);
    void setSuffix(QtProperty* property, const QString& suffix);
Q_SIGNALS:
    void prefixChanged(QtProperty* property, const QString& prefix);
    void suffixChanged(QtProperty* property, const QString& suffix);
protected:
    QString valueText(const QtProperty* property) const;
    virtual void initializeProperty(QtProperty* property);
    virtual void uninitializeProperty(QtProperty* property);
private:
    struct Data
    {
        QString prefix;
        QString suffix;
    };
    QMap<const QtProperty*, Data> propertyToData;
};
 
DecoratedDoublePropertyManager::DecoratedDoublePropertyManager(QObject* parent)
    : QtDoublePropertyManager(parent)
{
}
 
DecoratedDoublePropertyManager::~DecoratedDoublePropertyManager()
{
}
 
QString DecoratedDoublePropertyManager::prefix(const QtProperty* property) const
{
    if (!propertyToData.contains(property))
    {
        return QString();
    }
 
    return propertyToData[property].prefix;
}
 
QString DecoratedDoublePropertyManager::suffix(const QtProperty* property) const
{
    if (!propertyToData.contains(property))
    {
        return QString();
    }
 
    return propertyToData[property].suffix;
}
 
void DecoratedDoublePropertyManager::setPrefix(QtProperty* property, const QString& prefix)
{
    if (!propertyToData.contains(property))
    {
        return;
    }
 
    DecoratedDoublePropertyManager::Data data = propertyToData[property];
 
    if (data.prefix == prefix)
    {
        return;
    }
 
    data.prefix = prefix;
    propertyToData[property] = data;
 
    emit propertyChanged(property);
    emit prefixChanged(property, prefix);
}
 
void DecoratedDoublePropertyManager::setSuffix(QtProperty* property, const QString& suffix)
{
    if (!propertyToData.contains(property))
    {
        return;
    }
 
    DecoratedDoublePropertyManager::Data data = propertyToData[property];
 
    if (data.suffix == suffix)
    {
        return;
    }
 
    data.suffix = suffix;
    propertyToData[property] = data;
 
    emit propertyChanged(property);
    emit suffixChanged(property, suffix);
}
 
QString DecoratedDoublePropertyManager::valueText(const QtProperty* property) const
{
    QString text = QtDoublePropertyManager::valueText(property);
 
    if (!propertyToData.contains(property))
    {
        return text;
    }
 
    DecoratedDoublePropertyManager::Data data = propertyToData[property];
    text = data.prefix + text + data.suffix;
 
    return text;
}
 
void DecoratedDoublePropertyManager::initializeProperty(QtProperty* property)
{
    propertyToData[property] = DecoratedDoublePropertyManager::Data();
    QtDoublePropertyManager::initializeProperty(property);
}
 
void DecoratedDoublePropertyManager::uninitializeProperty(QtProperty* property)
{
    propertyToData.remove(property);
    QtDoublePropertyManager::uninitializeProperty(property);
}
 
 
class DecoratedDoubleSpinBoxFactory : public QtAbstractEditorFactory<DecoratedDoublePropertyManager>
{
    Q_OBJECT
public:
    DecoratedDoubleSpinBoxFactory(QObject* parent = 0);
    ~DecoratedDoubleSpinBoxFactory();
protected:
    void connectPropertyManager(DecoratedDoublePropertyManager* manager);
    QWidget* createEditor(DecoratedDoublePropertyManager* manager, QtProperty* property,
                          QWidget* parent);
    void disconnectPropertyManager(DecoratedDoublePropertyManager* manager);
private slots:
 
    void slotPrefixChanged(QtProperty* property, const QString& prefix);
    void slotSuffixChanged(QtProperty* property, const QString& prefix);
    void slotEditorDestroyed(QObject* object);
private:
    /* We delegate responsibilities for QtDoublePropertyManager, which is a base class
       of DecoratedDoublePropertyManager to appropriate QtDoubleSpinBoxFactory */
    QtDoubleSpinBoxFactory* originalFactory;
    QMap<QtProperty*, QList<QDoubleSpinBox*> > createdEditors;
    QMap<QDoubleSpinBox*, QtProperty*> editorToProperty;
};
 
DecoratedDoubleSpinBoxFactory::DecoratedDoubleSpinBoxFactory(QObject* parent)
    : QtAbstractEditorFactory<DecoratedDoublePropertyManager>(parent)
{
    originalFactory = new QtDoubleSpinBoxFactory(this);
}
 
DecoratedDoubleSpinBoxFactory::~DecoratedDoubleSpinBoxFactory()
{
    // not need to delete editors because they will be deleted by originalFactory in its destructor
}
 
void DecoratedDoubleSpinBoxFactory::connectPropertyManager(DecoratedDoublePropertyManager* manager)
{
    originalFactory->addPropertyManager(manager);
    connect(manager, SIGNAL(prefixChanged(QtProperty*, const QString&)), this, SLOT(slotPrefixChanged(QtProperty*, const QString&)));
    connect(manager, SIGNAL(suffixChanged(QtProperty*, const QString&)), this, SLOT(slotSuffixChanged(QtProperty*, const QString&)));
}
 
QWidget* DecoratedDoubleSpinBoxFactory::createEditor(DecoratedDoublePropertyManager* manager, QtProperty* property,
        QWidget* parent)
{
    QtAbstractEditorFactoryBase* base = originalFactory;
    QWidget* w = base->createEditor(property, parent);
 
    if (!w)
    {
        return 0;
    }
 
    QDoubleSpinBox* spinBox = qobject_cast<QDoubleSpinBox*>(w);
 
    if (!spinBox)
    {
        return 0;
    }
 
    spinBox->setPrefix(manager->prefix(property));
    spinBox->setSuffix(manager->suffix(property));
 
    createdEditors[property].append(spinBox);
    editorToProperty[spinBox] = property;
 
    return spinBox;
}
 
void DecoratedDoubleSpinBoxFactory::disconnectPropertyManager(DecoratedDoublePropertyManager* manager)
{
    originalFactory->removePropertyManager(manager);
    disconnect(manager, SIGNAL(prefixChanged(QtProperty*, const QString&)), this, SLOT(slotPrefixChanged(QtProperty*, const QString&)));
    disconnect(manager, SIGNAL(suffixChanged(QtProperty*, const QString&)), this, SLOT(slotSuffixChanged(QtProperty*, const QString&)));
}
 
void DecoratedDoubleSpinBoxFactory::slotPrefixChanged(QtProperty* property, const QString& prefix)
{
    if (!createdEditors.contains(property))
    {
        return;
    }
 
    DecoratedDoublePropertyManager* manager = propertyManager(property);
 
    if (!manager)
    {
        return;
    }
 
    QList<QDoubleSpinBox*> editors = createdEditors[property];
    QListIterator<QDoubleSpinBox*> itEditor(editors);
 
    while (itEditor.hasNext())
    {
        QDoubleSpinBox* editor = itEditor.next();
        editor->setPrefix(prefix);
    }
}
 
void DecoratedDoubleSpinBoxFactory::slotSuffixChanged(QtProperty* property, const QString& prefix)
{
    if (!createdEditors.contains(property))
    {
        return;
    }
 
    DecoratedDoublePropertyManager* manager = propertyManager(property);
 
    if (!manager)
    {
        return;
    }
 
    QList<QDoubleSpinBox*> editors = createdEditors[property];
    QListIterator<QDoubleSpinBox*> itEditor(editors);
 
    while (itEditor.hasNext())
    {
        QDoubleSpinBox* editor = itEditor.next();
        editor->setSuffix(prefix);
    }
}
 
void DecoratedDoubleSpinBoxFactory::slotEditorDestroyed(QObject* object)
{
    QMap<QDoubleSpinBox*, QtProperty*>::ConstIterator itEditor =
        editorToProperty.constBegin();
 
    while (itEditor != editorToProperty.constEnd())
    {
        if (itEditor.key() == object)
        {
            QDoubleSpinBox* editor = itEditor.key();
            QtProperty* property = itEditor.value();
            editorToProperty.remove(editor);
            createdEditors[property].removeAll(editor);
 
            if (createdEditors[property].isEmpty())
            {
                createdEditors.remove(property);
            }
 
            return;
        }
 
        itEditor++;
    }
}
 
 
int main(int argc, char** argv)
{
    QApplication app(argc, argv);
 
    QtDoublePropertyManager* undecoratedManager = new QtDoublePropertyManager();
    QtProperty* undecoratedProperty = undecoratedManager->addProperty("Undecorated");
    undecoratedManager->setValue(undecoratedProperty, 123.45);
 
    DecoratedDoublePropertyManager* decoratedManager = new DecoratedDoublePropertyManager();
    QtProperty* decoratedProperty = decoratedManager->addProperty("Decorated");
    decoratedManager->setPrefix(decoratedProperty, "speed: ");
    decoratedManager->setSuffix(decoratedProperty, " km/h");
    decoratedManager->setValue(decoratedProperty, 123.45);
 
    QtDoubleSpinBoxFactory* undecoratedFactory = new QtDoubleSpinBoxFactory();
    DecoratedDoubleSpinBoxFactory* decoratedFactory = new DecoratedDoubleSpinBoxFactory();
 
    QtTreePropertyBrowser* editor = new QtTreePropertyBrowser();
    editor->setFactoryForManager(undecoratedManager, undecoratedFactory);
    editor->setFactoryForManager(decoratedManager, decoratedFactory);
    editor->addProperty(undecoratedProperty);
    editor->addProperty(decoratedProperty);
    editor->show();
 
    int ret = app.exec();
 
    delete decoratedFactory;
    delete decoratedManager;
    delete undecoratedFactory;
    delete undecoratedManager;
    delete editor;
 
    return ret;
}
 
#include "main.moc"