/***************************************************************************
 *   Copyright (c) 2011 Juergen Riegel <FreeCAD@juergen-riegel.net>        *
 *                 2020 David Österberg                                    *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/


#include <App/Document.h>
#include <App/DocumentObject.h>
#include <App/Origin.h>
#include <Base/Console.h>
#include <Base/Converter.h>
#include <Base/Tools.h>
#include <Gui/Application.h>
#include <Gui/CommandT.h>
#include <Gui/Document.h>
#include <Gui/Selection/Selection.h>
#include <Gui/WaitCursor.h>
#include <Mod/Part/App/Tools.h>
#include <Gui/ViewProviderCoordinateSystem.h>
#include <Gui/Inventor/Draggers/SoLinearDragger.h>
#include <Mod/PartDesign/App/Body.h>
#include <Mod/PartDesign/App/FeatureHelix.h>
#include <Mod/Part/App/GizmoHelper.h>

#include "ReferenceSelection.h"
#include "ui_TaskHelixParameters.h"
#include "TaskHelixParameters.h"

using namespace PartDesignGui;
using PartDesign::HelixMode;
using namespace Gui;


/* TRANSLATOR PartDesignGui::TaskHelixParameters */

TaskHelixParameters::TaskHelixParameters(PartDesignGui::ViewProviderHelix* HelixView, QWidget* parent)
    : TaskSketchBasedParameters(HelixView, parent, "PartDesign_AdditiveHelix", tr("Helix Parameters"))
    , ui(new Ui_TaskHelixParameters)
{
    // we need a separate container widget to add all controls to
    proxy = new QWidget(this);
    ui->setupUi(proxy);
    this->groupLayout()->addWidget(proxy);

    initializeHelix();

    assignProperties();
    setValuesFromProperties();

    updateUI();

    // enable use of parametric expressions for the numerical fields
    bindProperties();

    connectSlots();
    setFocus();
    showCoordinateAxes();

    setupGizmos(HelixView);
}

void TaskHelixParameters::initializeHelix()
{
    auto helix = getObject<PartDesign::Helix>();
    if (!(helix->HasBeenEdited).getValue()) {
        helix->proposeParameters();
        recomputeFeature();
    }
}

void TaskHelixParameters::assignProperties()
{
    auto helix = getObject<PartDesign::Helix>();
    propAngle = &(helix->Angle);
    propGrowth = &(helix->Growth);
    propPitch = &(helix->Pitch);
    propHeight = &(helix->Height);
    propTurns = &(helix->Turns);
    propReferenceAxis = &(helix->ReferenceAxis);
    propLeftHanded = &(helix->LeftHanded);
    propReversed = &(helix->Reversed);
    propMode = &(helix->Mode);
    propOutside = &(helix->Outside);
}

void TaskHelixParameters::setValuesFromProperties()
{
    double pitch = propPitch->getValue();
    double height = propHeight->getValue();
    double turns = propTurns->getValue();
    double angle = propAngle->getValue();
    double growth = propGrowth->getValue();
    bool leftHanded = propLeftHanded->getValue();
    bool reversed = propReversed->getValue();
    int index = propMode->getValue();
    bool outside = propOutside->getValue();

    ui->pitch->setValue(pitch);
    ui->height->setValue(height);
    ui->turns->setValue(turns);
    ui->coneAngle->setValue(angle);
    ui->coneAngle->setMinimum(propAngle->getMinimum());
    ui->coneAngle->setMaximum(propAngle->getMaximum());
    ui->growth->setValue(growth);
    ui->checkBoxLeftHanded->setChecked(leftHanded);
    ui->checkBoxReversed->setChecked(reversed);
    ui->inputMode->setCurrentIndex(index);
    ui->checkBoxOutside->setChecked(outside);
}

void TaskHelixParameters::bindProperties()
{
    auto helix = getObject<PartDesign::Helix>();
    ui->pitch->bind(helix->Pitch);
    ui->height->bind(helix->Height);
    ui->turns->bind(helix->Turns);
    ui->coneAngle->bind(helix->Angle);
    ui->growth->bind(helix->Growth);
}

void TaskHelixParameters::connectSlots()
{
    QMetaObject::connectSlotsByName(this);

    // clang-format off
    connect(ui->pitch, qOverload<double>(&QuantitySpinBox::valueChanged),
            this, &TaskHelixParameters::onPitchChanged);
    connect(ui->height, qOverload<double>(&QuantitySpinBox::valueChanged),
            this, &TaskHelixParameters::onHeightChanged);
    connect(ui->turns, qOverload<double>(&QuantitySpinBox::valueChanged),
            this, &TaskHelixParameters::onTurnsChanged);
    connect(ui->coneAngle, qOverload<double>(&QuantitySpinBox::valueChanged),
            this, &TaskHelixParameters::onAngleChanged);
    connect(ui->growth, qOverload<double>(&QuantitySpinBox::valueChanged),
            this, &TaskHelixParameters::onGrowthChanged);
    connect(ui->axis, qOverload<int>(&QComboBox::activated),
            this, &TaskHelixParameters::onAxisChanged);
    connect(ui->checkBoxLeftHanded, &QCheckBox::toggled,
            this, &TaskHelixParameters::onLeftHandedChanged);
    connect(ui->checkBoxReversed, &QCheckBox::toggled,
            this, &TaskHelixParameters::onReversedChanged);
    connect(ui->checkBoxUpdateView, &QCheckBox::toggled,
            this, &TaskHelixParameters::onUpdateView);
    connect(ui->inputMode, qOverload<int>(&QComboBox::activated),
            this, &TaskHelixParameters::onModeChanged);
    connect(ui->checkBoxOutside, &QCheckBox::toggled,
            this, &TaskHelixParameters::onOutsideChanged);
    // clang-format on
}

void TaskHelixParameters::showCoordinateAxes()
{
    // show the parts coordinate system axis for selection
    if (PartDesign::Body* body = PartDesign::Body::findBodyOf(getObject())) {
        try {
            App::Origin* origin = body->getOrigin();
            ViewProviderCoordinateSystem* vpOrigin;
            vpOrigin = static_cast<ViewProviderCoordinateSystem*>(
                Gui::Application::Instance->getViewProvider(origin)
            );
            vpOrigin->setTemporaryVisibility(Gui::DatumElement::Axes);
        }
        catch (const Base::Exception& ex) {
            ex.reportException();
        }
    }
}

void TaskHelixParameters::fillAxisCombo(bool forceRefill)
{
    Base::StateLocker lock(getUpdateBlockRef(), true);

    if (axesInList.empty()) {
        forceRefill = true;  // not filled yet, full refill
    }

    if (forceRefill) {
        ui->axis->clear();
        this->axesInList.clear();

        // add sketch axes
        addSketchAxes();

        // add part axes
        addPartAxes();

        // add "Select reference"
        addAxisToCombo(nullptr, std::string(), tr("Select reference…"));
    }

    // add current link, if not in list and highlight it
    int indexOfCurrent = addCurrentLink();
    if (indexOfCurrent != -1) {
        ui->axis->setCurrentIndex(indexOfCurrent);
    }
}

void TaskHelixParameters::addSketchAxes()
{
    auto profile = getObject<PartDesign::ProfileBased>();
    auto sketch = dynamic_cast<Part::Part2DObject*>(profile->Profile.getValue());
    if (sketch) {
        addAxisToCombo(sketch, "N_Axis", tr("Normal sketch axis"));
        addAxisToCombo(sketch, "V_Axis", tr("Vertical sketch axis"));
        addAxisToCombo(sketch, "H_Axis", tr("Horizontal sketch axis"));
        for (int i = 0; i < sketch->getAxisCount(); i++) {
            QString itemText = tr("Construction line %1").arg(i + 1);
            std::stringstream sub;
            sub << "Axis" << i;
            addAxisToCombo(sketch, sub.str(), itemText);
        }
    }
}

void TaskHelixParameters::addPartAxes()
{
    auto profile = getObject<PartDesign::ProfileBased>();
    if (PartDesign::Body* body = PartDesign::Body::findBodyOf(profile)) {
        try {
            App::Origin* orig = body->getOrigin();
            addAxisToCombo(orig->getX(), "", tr("Base X-axis"));
            addAxisToCombo(orig->getY(), "", tr("Base Y-axis"));
            addAxisToCombo(orig->getZ(), "", tr("Base Z-axis"));
        }
        catch (const Base::Exception& ex) {
            ex.reportException();
        }
    }
}

int TaskHelixParameters::addCurrentLink()
{
    int indexOfCurrent = -1;
    App::DocumentObject* ax = propReferenceAxis->getValue();
    const std::vector<std::string>& subList = propReferenceAxis->getSubValues();
    for (size_t i = 0; i < axesInList.size(); i++) {
        if (ax == axesInList[i]->getValue() && subList == axesInList[i]->getSubValues()) {
            indexOfCurrent = i;
            break;
        }
    }

    if (indexOfCurrent == -1 && ax) {
        assert(subList.size() <= 1);
        std::string sub;
        if (!subList.empty()) {
            sub = subList[0];
        }
        addAxisToCombo(ax, sub, getRefStr(ax, subList));
        indexOfCurrent = axesInList.size() - 1;
    }

    return indexOfCurrent;
}

void TaskHelixParameters::addAxisToCombo(
    App::DocumentObject* linkObj,
    std::string linkSubname,
    QString itemText
)
{
    this->ui->axis->addItem(itemText);
    this->axesInList.emplace_back(new App::PropertyLinkSub);
    App::PropertyLinkSub& lnk = *(axesInList.back());
    lnk.setValue(linkObj, std::vector<std::string>(1, linkSubname));
}

void TaskHelixParameters::updateStatus()
{
    auto helix = getObject<PartDesign::Helix>();
    auto status = std::string(helix->getStatusString());
    QString translatedStatus;
    if (status.compare("Valid") == 0 || status.compare("Touched") == 0) {
        if (helix->safePitch() > helix->Pitch.getValue()) {
            translatedStatus = tr("Warning: helix might be self intersecting");
        }
    }
    // if the helix touches itself along a single helical edge we get this error
    else if (status.compare("NCollection_IndexedDataMap::FindFromKey") == 0) {
        translatedStatus = tr("Error: helix touches itself");
    }
    ui->labelMessage->setText(translatedStatus);
}

void TaskHelixParameters::updateUI()
{
    fillAxisCombo();
    assignToolTipsFromPropertyDocs();
    updateStatus();
    adaptVisibilityToMode();
}

void TaskHelixParameters::adaptVisibilityToMode()
{
    bool isPitchVisible = false;
    bool isHeightVisible = false;
    bool isTurnsVisible = false;
    bool isOutsideVisible = false;
    bool isAngleVisible = false;
    bool isGrowthVisible = false;

    auto helix = getObject<PartDesign::Helix>();
    if (helix->getAddSubType() == PartDesign::FeatureAddSub::Subtractive) {
        isOutsideVisible = true;
    }

    HelixMode mode = static_cast<HelixMode>(propMode->getValue());
    if (mode == HelixMode::pitch_height_angle) {
        isPitchVisible = true;
        isHeightVisible = true;
        isAngleVisible = true;
    }
    else if (mode == HelixMode::pitch_turns_angle) {
        isPitchVisible = true;
        isTurnsVisible = true;
        isAngleVisible = true;
    }
    else if (mode == HelixMode::height_turns_angle) {
        isHeightVisible = true;
        isTurnsVisible = true;
        isAngleVisible = true;
    }
    else if (mode == HelixMode::height_turns_growth) {
        isHeightVisible = true;
        isTurnsVisible = true;
        isGrowthVisible = true;
    }
    else {
        ui->labelMessage->setText(tr("Error: unsupported mode"));
    }

    ui->pitch->setVisible(isPitchVisible);
    ui->labelPitch->setVisible(isPitchVisible);

    ui->height->setVisible(isHeightVisible);
    ui->labelHeight->setVisible(isHeightVisible);

    ui->turns->setVisible(isTurnsVisible);
    ui->labelTurns->setVisible(isTurnsVisible);

    ui->coneAngle->setVisible(isAngleVisible);
    ui->labelConeAngle->setVisible(isAngleVisible);

    ui->growth->setVisible(isGrowthVisible);
    ui->labelGrowth->setVisible(isGrowthVisible);

    ui->checkBoxOutside->setVisible(isOutsideVisible);
}

void TaskHelixParameters::assignToolTipsFromPropertyDocs()
{
    auto helix = getObject<PartDesign::Helix>();
    const char* propCategory = "App::Property";  // cf. https://tracker.freecad.org/view.php?id=0002524
    QString toolTip;

    // Beware that "Axis" in the GUI actually represents the property "ReferenceAxis"!
    // The property "Axis" holds only the directional part of the reference axis and has no
    // corresponding GUI element.
    toolTip = QApplication::translate(propCategory, helix->ReferenceAxis.getDocumentation());
    ui->axis->setToolTip(toolTip);
    ui->labelAxis->setToolTip(toolTip);

    toolTip = QApplication::translate(propCategory, helix->Mode.getDocumentation());
    ui->inputMode->setToolTip(toolTip);
    ui->labelInputMode->setToolTip(toolTip);

    toolTip = QApplication::translate(propCategory, helix->Pitch.getDocumentation());
    ui->pitch->setToolTip(toolTip);
    ui->labelPitch->setToolTip(toolTip);

    toolTip = QApplication::translate(propCategory, helix->Height.getDocumentation());
    ui->height->setToolTip(toolTip);
    ui->labelHeight->setToolTip(toolTip);

    toolTip = QApplication::translate(propCategory, helix->Turns.getDocumentation());
    ui->turns->setToolTip(toolTip);
    ui->labelTurns->setToolTip(toolTip);

    toolTip = QApplication::translate(propCategory, helix->Angle.getDocumentation());
    ui->coneAngle->setToolTip(toolTip);
    ui->labelConeAngle->setToolTip(toolTip);

    toolTip = QApplication::translate(propCategory, helix->Growth.getDocumentation());
    ui->growth->setToolTip(toolTip);
    ui->labelGrowth->setToolTip(toolTip);

    toolTip = QApplication::translate(propCategory, helix->LeftHanded.getDocumentation());
    ui->checkBoxLeftHanded->setToolTip(toolTip);

    toolTip = QApplication::translate(propCategory, helix->Reversed.getDocumentation());
    ui->checkBoxReversed->setToolTip(toolTip);

    toolTip = QApplication::translate(propCategory, helix->Outside.getDocumentation());
    ui->checkBoxOutside->setToolTip(toolTip);
}

void TaskHelixParameters::onSelectionChanged(const Gui::SelectionChanges& msg)
{
    if (msg.Type == Gui::SelectionChanges::AddSelection) {
        std::vector<std::string> axis;
        App::DocumentObject* selObj {};
        if (getReferencedSelection(getObject(), msg, selObj, axis) && selObj) {
            exitSelectionMode();
            propReferenceAxis->setValue(selObj, axis);
            recomputeFeature();
            updateUI();
        }
    }
}

void TaskHelixParameters::onPitchChanged(double len)
{
    if (getObject()) {
        propPitch->setValue(len);
        recomputeFeature();
        updateUI();
    }
}

void TaskHelixParameters::onHeightChanged(double len)
{
    if (getObject()) {
        propHeight->setValue(len);
        recomputeFeature();
        updateUI();
    }
}

void TaskHelixParameters::onTurnsChanged(double len)
{
    if (getObject()) {
        propTurns->setValue(len);
        recomputeFeature();
        updateUI();
    }
}

void TaskHelixParameters::onAngleChanged(double len)
{
    if (getObject()) {
        propAngle->setValue(len);
        recomputeFeature();
        updateUI();
    }
}

void TaskHelixParameters::onGrowthChanged(double len)
{
    if (getObject()) {
        propGrowth->setValue(len);
        recomputeFeature();
        updateUI();
    }
}

void TaskHelixParameters::onAxisChanged(int num)
{
    auto helix = getObject<PartDesign::ProfileBased>();

    if (axesInList.empty()) {
        return;
    }

    App::DocumentObject* oldRefAxis = propReferenceAxis->getValue();
    std::vector<std::string> oldSubRefAxis = propReferenceAxis->getSubValues();
    std::string oldRefName;
    if (!oldSubRefAxis.empty()) {
        oldRefName = oldSubRefAxis.front();
    }

    App::PropertyLinkSub& lnk = *(axesInList[num]);
    if (!lnk.getValue()) {
        // enter reference selection mode
        // assure the sketch is visible
        if (auto sketch = dynamic_cast<Part::Part2DObject*>(helix->Profile.getValue())) {
            Gui::cmdAppObjectShow(sketch);
        }
        TaskSketchBasedParameters::onSelectReference(
            AllowSelection::EDGE | AllowSelection::PLANAR | AllowSelection::CIRCLE
        );
        return;
    }
    else {
        if (!helix->getDocument()->isIn(lnk.getValue())) {
            Base::Console().error("Object was deleted\n");
            return;
        }
        propReferenceAxis->Paste(lnk);

        // in case user is in selection mode, but changed their mind before selecting anything.
        exitSelectionMode();
    }

    try {
        App::DocumentObject* newRefAxis = propReferenceAxis->getValue();
        const std::vector<std::string>& newSubRefAxis = propReferenceAxis->getSubValues();
        std::string newRefName;
        if (!newSubRefAxis.empty()) {
            newRefName = newSubRefAxis.front();
        }

        if (oldRefAxis != newRefAxis || oldSubRefAxis.size() != newSubRefAxis.size()
            || oldRefName != newRefName) {
            bool reversed = propReversed->getValue();
            if (reversed != propReversed->getValue()) {
                propReversed->setValue(reversed);
                ui->checkBoxReversed->blockSignals(true);
                ui->checkBoxReversed->setChecked(reversed);
                ui->checkBoxReversed->blockSignals(false);
            }
        }

        recomputeFeature();
        updateStatus();

        setGizmoPositions();
    }
    catch (const Base::Exception& e) {
        e.reportException();
    }
}

void TaskHelixParameters::onModeChanged(int index)
{
    propMode->setValue(index);

    ui->pitch->setValue(propPitch->getValue());
    ui->height->setValue(propHeight->getValue());
    ui->turns->setValue(propTurns->getValue());
    ui->coneAngle->setValue(propAngle->getValue());
    ui->growth->setValue(propGrowth->getValue());

    recomputeFeature();
    updateUI();
}

void TaskHelixParameters::onLeftHandedChanged(bool on)
{
    if (getObject()) {
        propLeftHanded->setValue(on);
        recomputeFeature();
        updateUI();
    }
}

void TaskHelixParameters::onReversedChanged(bool on)
{
    if (getObject()) {
        propReversed->setValue(on);
        recomputeFeature();
        updateUI();

        setGizmoPositions();
    }
}

void TaskHelixParameters::onOutsideChanged(bool on)
{
    if (getObject()) {
        propOutside->setValue(on);
        recomputeFeature();
        updateUI();
    }
}


TaskHelixParameters::~TaskHelixParameters()
{
    try {
        // hide the parts coordinate system axis for selection
        auto obj = getObject();
        PartDesign::Body* body = obj ? PartDesign::Body::findBodyOf(obj) : nullptr;
        if (body) {
            App::Origin* origin = body->getOrigin();
            ViewProviderCoordinateSystem* vpOrigin {};
            vpOrigin = static_cast<ViewProviderCoordinateSystem*>(
                Gui::Application::Instance->getViewProvider(origin)
            );
            vpOrigin->resetTemporaryVisibility();
        }
    }
    catch (const Base::Exception& ex) {
        ex.reportException();
    }
}

void TaskHelixParameters::changeEvent(QEvent* e)
{
    TaskBox::changeEvent(e);
    if (e->type() == QEvent::LanguageChange) {
        // save current indexes
        int axis = ui->axis->currentIndex();
        int mode = ui->inputMode->currentIndex();
        ui->retranslateUi(proxy);
        assignToolTipsFromPropertyDocs();

        // Axes added by the user cannot be restored
        fillAxisCombo(true);

        // restore the indexes
        if (axis < ui->axis->count()) {
            ui->axis->setCurrentIndex(axis);
        }
        ui->inputMode->setCurrentIndex(mode);
    }
}

void TaskHelixParameters::getReferenceAxis(App::DocumentObject*& obj, std::vector<std::string>& sub) const
{
    if (axesInList.empty()) {
        throw Base::RuntimeError("Not initialized!");
    }

    int num = ui->axis->currentIndex();
    const App::PropertyLinkSub& lnk = *(axesInList.at(num));
    if (!lnk.getValue()) {
        throw Base::RuntimeError("Still in reference selection mode; reference was not selected yet");
    }
    else {
        auto revolution = getObject<PartDesign::ProfileBased>();
        if (!revolution->getDocument()->isIn(lnk.getValue())) {
            throw Base::RuntimeError("Object was deleted");
        }

        obj = lnk.getValue();
        sub = lnk.getSubValues();
    }
}

bool TaskHelixParameters::showPreview(PartDesign::Helix* helix)
{
    ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath(
        "User parameter:BaseApp/Preferences/Mod/PartDesign"
    );
    if ((hGrp->GetBool("SubractiveHelixPreview", true)
         && helix->getAddSubType() == PartDesign::FeatureAddSub::Subtractive)
        || (hGrp->GetBool("AdditiveHelixPreview", false)
            && helix->getAddSubType() == PartDesign::FeatureAddSub::Additive)) {
        return true;
    }

    return false;
}

void TaskHelixParameters::startReferenceSelection(App::DocumentObject* profile, App::DocumentObject* base)
{
    if (auto helix = getObject<PartDesign::Helix>()) {
        if (helix && showPreview(helix)) {
            Gui::Document* doc = getGuiDocument();
            if (doc) {
                doc->setHide(profile->getNameInDocument());
            }
        }
        else {
            TaskSketchBasedParameters::startReferenceSelection(profile, base);
        }
    }
}

void TaskHelixParameters::finishReferenceSelection(App::DocumentObject* profile, App::DocumentObject* base)
{
    if (auto helix = getObject<PartDesign::Helix>()) {
        if (helix && showPreview(helix)) {
            Gui::Document* doc = getGuiDocument();
            if (doc) {
                doc->setShow(profile->getNameInDocument());
            }
        }
        else {
            TaskSketchBasedParameters::finishReferenceSelection(profile, base);
        }
    }
}

// this is used for logging the command fully when recording macros
void TaskHelixParameters::apply()  // NOLINT
{
    std::vector<std::string> sub;
    App::DocumentObject* obj {};
    getReferenceAxis(obj, sub);
    std::string axis = buildLinkSingleSubPythonStr(obj, sub);
    auto tobj = getObject();
    FCMD_OBJ_CMD(tobj, "ReferenceAxis = " << axis);
    FCMD_OBJ_CMD(tobj, "Mode = " << propMode->getValue());
    FCMD_OBJ_CMD(tobj, "Pitch = " << propPitch->getValue());
    FCMD_OBJ_CMD(tobj, "Height = " << propHeight->getValue());
    FCMD_OBJ_CMD(tobj, "Turns = " << propTurns->getValue());
    FCMD_OBJ_CMD(tobj, "Angle = " << propAngle->getValue());
    FCMD_OBJ_CMD(tobj, "Growth = " << propGrowth->getValue());
    FCMD_OBJ_CMD(tobj, "LeftHanded = " << (propLeftHanded->getValue() ? 1 : 0));
    FCMD_OBJ_CMD(tobj, "Reversed = " << (propReversed->getValue() ? 1 : 0));
}

void TaskHelixParameters::setupGizmos(ViewProviderHelix* vp)
{
    if (!GizmoContainer::isEnabled()) {
        return;
    }

    heightGizmo = new Gui::LinearGizmo(ui->height);

    connect(ui->inputMode, qOverload<int>(&QComboBox::currentIndexChanged), [this](int index) {
        bool isPitchTurnsAngle = index == static_cast<int>(HelixMode::pitch_turns_angle);
        heightGizmo->setVisibility(!isPitchTurnsAngle);
    });

    gizmoContainer = GizmoContainer::create({heightGizmo}, vp);

    setGizmoPositions();

    ui->inputMode->currentIndexChanged(ui->inputMode->currentIndex());
}

void TaskHelixParameters::setGizmoPositions()
{
    if (!gizmoContainer) {
        return;
    }

    auto helix = getObject<PartDesign::Helix>();
    if (!helix || helix->isError()) {
        gizmoContainer->visible = false;
        return;
    }
    gizmoContainer->visible = true;
    Part::TopoShape profileShape = helix->getProfileShape();
    double reversed = propReversed->getValue() ? -1.0 : 1.0;
    auto profileCentre = getMidPointFromProfile(profileShape);
    Base::Vector3d axisDir = helix->Axis.getValue() * reversed;
    Base::Vector3d basePos = helix->Base.getValue();

    // Project the centre point of the helix to a plane passing through the com of the profile
    // and along the helix axis
    Base::Vector3d pos = basePos + axisDir.Dot(profileCentre - basePos) * axisDir;

    heightGizmo->Gizmo::setDraggerPlacement(pos, axisDir);
}


//**************************************************************************
//**************************************************************************
// TaskDialog
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
TaskDlgHelixParameters::TaskDlgHelixParameters(ViewProviderHelix* HelixView)
    : TaskDlgSketchBasedParameters(HelixView)
{
    assert(HelixView);
    Content.push_back(new TaskHelixParameters(HelixView));
    Content.push_back(preview);
}


#include "moc_TaskHelixParameters.cpp"