void TaskAppearance::slotChangedObject(const Gui::ViewProvider& obj,
                                       const App::Property& prop)
{
    // This method gets called if a property of any view provider is changed.
    // We pick out all the properties for which we need to update this dialog.
    std::vector<Gui::ViewProvider*> Provider = getSelection();
    std::vector<Gui::ViewProvider*>::const_iterator vp = std::find_if
        (Provider.begin(), Provider.end(), 
        std::bind2nd(std::equal_to<Gui::ViewProvider*>(),
        const_cast<Gui::ViewProvider*>(&obj)));
    if (vp != Provider.end()) {
        std::string prop_name = obj.getPropertyName(&prop);
        if (prop.getTypeId().isDerivedFrom(App::PropertyInteger::getClassTypeId())) {
            long value = static_cast<const App::PropertyInteger&>(prop).getValue();
            if (prop_name == "Transparency") {
                bool blocked = ui->spinTransparency->blockSignals(true);
                ui->spinTransparency->setValue(value);
                ui->spinTransparency->blockSignals(blocked);
                blocked = ui->horizontalSlider->blockSignals(true);
                ui->horizontalSlider->setValue(value);
                ui->horizontalSlider->blockSignals(blocked);
            }
        }
        else if (prop.getTypeId().isDerivedFrom(App::PropertyFloat::getClassTypeId())) {
            float value = static_cast<const App::PropertyFloat&>(prop).getValue();
            if (prop_name == "PointSize") {
                bool blocked = ui->spinPointSize->blockSignals(true);
                ui->spinPointSize->setValue((int)value);
                ui->spinPointSize->blockSignals(blocked);
            }
            else if (prop_name == "LineWidth") {
                bool blocked = ui->spinLineWidth->blockSignals(true);
                ui->spinLineWidth->setValue((int)value);
                ui->spinLineWidth->blockSignals(blocked);
            }
        }
    }
}
void DlgDisplayPropertiesImp::slotChangedObject(const Gui::ViewProvider& obj,
                                                const App::Property& prop)
{
    // This method gets called if a property of any view provider is changed.
    // We pick out all the properties for which we need to update this dialog.
    std::vector<Gui::ViewProvider*> Provider = getSelection();
    std::vector<Gui::ViewProvider*>::const_iterator vp = std::find_if
        (Provider.begin(), Provider.end(), 
        std::bind2nd(std::equal_to<Gui::ViewProvider*>(),
        const_cast<Gui::ViewProvider*>(&obj)));
    if (vp != Provider.end()) {
        std::string prop_name = obj.getPropertyName(&prop);
        if (prop.getTypeId() == App::PropertyColor::getClassTypeId()) {
            App::Color value = static_cast<const App::PropertyColor&>(prop).getValue();
            if (prop_name == "ShapeColor") {
                bool blocked = buttonColor->blockSignals(true);
                buttonColor->setColor(QColor((int)(255.0f*value.r),
                                             (int)(255.0f*value.g),
                                             (int)(255.0f*value.b)));
                buttonColor->blockSignals(blocked);
            }
            else if (prop_name == "LineColor") {
                bool blocked = buttonLineColor->blockSignals(true);
                buttonLineColor->setColor(QColor((int)(255.0f*value.r),
                                                 (int)(255.0f*value.g),
                                                 (int)(255.0f*value.b)));
                buttonLineColor->blockSignals(blocked);
            }
        }
        else if (prop.getTypeId().isDerivedFrom(App::PropertyInteger::getClassTypeId())) {
            long value = static_cast<const App::PropertyInteger&>(prop).getValue();
            if (prop_name == "Transparency") {
                bool blocked = spinTransparency->blockSignals(true);
                spinTransparency->setValue(value);
                spinTransparency->blockSignals(blocked);
                blocked = horizontalSlider->blockSignals(true);
                horizontalSlider->setValue(value);
                horizontalSlider->blockSignals(blocked);
            }
            else if (prop_name == "LineTransparency") {
                bool blocked = spinLineTransparency->blockSignals(true);
                spinLineTransparency->setValue(value);
                spinLineTransparency->blockSignals(blocked);
                blocked = sliderLineTransparency->blockSignals(true);
                sliderLineTransparency->setValue(value);
                sliderLineTransparency->blockSignals(blocked);
            }
        }
        else if (prop.getTypeId().isDerivedFrom(App::PropertyFloat::getClassTypeId())) {
            double value = static_cast<const App::PropertyFloat&>(prop).getValue();
            if (prop_name == "PointSize") {
                bool blocked = spinPointSize->blockSignals(true);
                spinPointSize->setValue((int)value);
                spinPointSize->blockSignals(blocked);
            }
            else if (prop_name == "LineWidth") {
                bool blocked = spinLineWidth->blockSignals(true);
                spinLineWidth->setValue((int)value);
                spinLineWidth->blockSignals(blocked);
            }
        }
    }
}