SampleEditorController.cpp

//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/View/SampleDesigner/SampleEditorController.cpp
//! @brief     Implements class SampleEditorController
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2021
//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************

#include "GUI/View/SampleDesigner/SampleEditorController.h"
#include "GUI/Model/Material/MaterialModel.h"
#include "GUI/Model/Project/ProjectDocument.h"
#include "GUI/Model/Sample/FormFactorItemCatalog.h"
#include "GUI/Model/Sample/InterferenceItems.h"
#include "GUI/Model/Sample/LayerItem.h"
#include "GUI/Model/Sample/MesoCrystalItem.h"
#include "GUI/Model/Sample/MultiLayerItem.h"
#include "GUI/Model/Sample/ParticleCompositionItem.h"
#include "GUI/Model/Sample/ParticleCoreShellItem.h"
#include "GUI/Model/Sample/ParticleItem.h"
#include "GUI/Model/Sample/ParticleLayoutItem.h"
#include "GUI/Model/Types/UIntDescriptor.h"
#include "GUI/View/Edit/DoubleSpinBox.h"
#include "GUI/View/SampleDesigner/InterferenceForm.h"
#include "GUI/View/SampleDesigner/LatticeTypeSelectionForm.h"
#include "GUI/View/SampleDesigner/LayerForm.h"
#include "GUI/View/SampleDesigner/MaterialInplaceForm.h"
#include "GUI/View/SampleDesigner/MesoCrystalForm.h"
#include "GUI/View/SampleDesigner/MultiLayerForm.h"
#include "GUI/View/SampleDesigner/ParticleCompositionForm.h"
#include "GUI/View/SampleDesigner/ParticleCoreShellForm.h"
#include "GUI/View/SampleDesigner/ParticleLayoutForm.h"
#include "GUI/View/SampleDesigner/SampleEditorCommands.h"
#include "Sample/HardParticle/FormFactorCylinder.h"

SampleEditorController::SampleEditorController(ProjectDocument* document, MultiLayerItem* multi)
    : m_multiLayerItem(multi), m_multiLayerForm(nullptr), m_document(document)
{
}

void SampleEditorController::setMultiLayerForm(MultiLayerForm* view)
{
    m_multiLayerForm = view;
}

MultiLayerForm* SampleEditorController::multiLayerForm() const
{
    return m_multiLayerForm;
}

MultiLayerItem* SampleEditorController::multiLayerItem() const
{
    return m_multiLayerItem;
}

void SampleEditorController::addLayer(LayerItem* before)
{
    const int rowInMultiLayer = (before != nullptr) ? m_multiLayerItem->layers().indexOf(before)
                                                    : m_multiLayerItem->layers().size();

    // -- find a color for the new layer
    QColor color;
    auto unusedColors = LayerEditorUtils::predefinedLayerColors();
    for (auto* l : m_multiLayerItem->layers())
        unusedColors.removeAll(l->color());
    if (!unusedColors.isEmpty())
        color = unusedColors.first();
    else {
        // search for a color which has been used the less, and which is not the same as in the
        // layers above and below
        QMap<QString, int> usage;
        for (auto* l : m_multiLayerItem->layers())
            usage[l->color().name()] += 1;

        auto sortedByUsage = LayerEditorUtils::predefinedLayerColors();
        std::stable_sort(
            sortedByUsage.begin(), sortedByUsage.end(),
            [&](const QColor& a, const QColor& b) { return usage[a.name()] < usage[b.name()]; });


        const QColor above = (rowInMultiLayer > 0)
                                 ? m_multiLayerItem->layers()[rowInMultiLayer - 1]->color()
                                 : QColor();
        const QColor below = (rowInMultiLayer < m_multiLayerItem->layers().size())
                                 ? m_multiLayerItem->layers()[rowInMultiLayer]->color()
                                 : QColor();

        for (const auto& col : sortedByUsage)
            if (col != above && col != below) {
                color = col;
                break;
            }
    }

    // - create new layer
    LayerItem* layer = m_multiLayerItem->addLayer(rowInMultiLayer);
    layer->setMaterialModel(materialModel());
    layer->setMaterial(materialModel()->defaultMaterial());
    layer->setColor(color);

    ASSERT(m_multiLayerForm);
    m_multiLayerForm->onLayerAdded(layer);
    m_multiLayerForm->updateUnits();

    emit modified();
}

void SampleEditorController::addLayout(LayerForm* layerItemWidget)
{
    auto* newLayoutItem = layerItemWidget->layerItem()->addLayout();
    layerItemWidget->onLayoutAdded(newLayoutItem);
    m_multiLayerForm->updateUnits();

    for (auto* layoutForms : layerItemWidget->findChildren<ParticleLayoutForm*>())
        layoutForms->updateTitle(layerItemWidget->layerItem());

    emit modified();
}

void SampleEditorController::removeLayer(LayerItem* layerItem)
{
    m_undoStack.push(new CommandRemoveLayer(this, layerItem));
}

void SampleEditorController::removeLayout(LayerForm* layerItemWidget, ParticleLayoutItem* layout)
{
    emit aboutToRemoveItem(layout);
    layerItemWidget->onAboutToRemoveLayout(layout);
    layerItemWidget->layerItem()->removeLayout(layout);

    for (auto* layoutForms : layerItemWidget->findChildren<ParticleLayoutForm*>())
        layoutForms->updateTitle(layerItemWidget->layerItem());

    emit modified();
}

void SampleEditorController::addParticle(ParticleLayoutItem* layoutItem,
                                         FormFactorItemCatalog::Type formFactorType)
{
    auto* newParticle = new ParticleItem();
    layoutItem->addParticle(newParticle);
    newParticle->setMaterialModel(materialModel());
    newParticle->setFormFactor(FormFactorItemCatalog::create(formFactorType));
    newParticle->setMaterial(materialModel()->defaultMaterial());

    emit modified();

    //  search for particle layout widget for notification
    ASSERT(m_multiLayerForm);
    for (auto* w : m_multiLayerForm->findChildren<ParticleLayoutForm*>())
        if (w->layoutItem() == layoutItem)
            w->onParticleAdded(newParticle);
    m_multiLayerForm->updateUnits();
}


void SampleEditorController::addParticle(ParticleLayoutItem* layoutItem,
                                         ItemWithParticlesCatalog::Type type)
{
    auto* newItem = ItemWithParticlesCatalog::create(type);
    layoutItem->addParticle(newItem);

    if (auto* cs = dynamic_cast<ParticleCoreShellItem*>(newItem)) {
        cs->createCore(materialModel());
        cs->createShell(materialModel());
        cs->core()->setFormFactor(new CylinderItem());
        cs->shell()->setFormFactor(new CylinderItem());
    }

    emit modified();

    //  search for particle layout widget for notification
    ASSERT(m_multiLayerForm);
    for (auto* w : m_multiLayerForm->findChildren<ParticleLayoutForm*>())
        if (w->layoutItem() == layoutItem)
            w->onParticleAdded(newItem);
    m_multiLayerForm->updateUnits();
}

void SampleEditorController::addParticle(ParticleCompositionItem* compositionItem,
                                         ItemWithParticlesCatalog::Type type)
{
    auto* newItem = ItemWithParticlesCatalog::create(type);
    compositionItem->addParticle(newItem);
    if (auto* p = dynamic_cast<ItemWithMaterial*>(newItem)) {
        p->setMaterialModel(materialModel());
        p->setMaterial(materialModel()->defaultMaterial());
    }

    if (auto* cs = dynamic_cast<ParticleCoreShellItem*>(newItem)) {
        cs->createCore(materialModel());
        cs->createShell(materialModel());
        cs->core()->setFormFactor(new CylinderItem());
        cs->shell()->setFormFactor(new CylinderItem());
    }

    emit modified();

    //  search for composition widget for notification
    ASSERT(m_multiLayerForm);
    for (auto* c : m_multiLayerForm->findChildren<ParticleCompositionForm*>())
        if (c->compositionItem() == compositionItem)
            c->onParticleAdded(newItem);
    m_multiLayerForm->updateUnits();
}

void SampleEditorController::addParticle(ParticleCompositionItem* compositionItem,
                                         FormFactorItemCatalog::Type formFactorType)
{
    auto* newParticle = new ParticleItem();
    compositionItem->addParticle(newParticle);
    newParticle->setMaterialModel(materialModel());
    newParticle->setFormFactor(FormFactorItemCatalog::create(formFactorType));
    newParticle->setMaterial(materialModel()->defaultMaterial());

    emit modified();

    //  search for composition widget for notification
    ASSERT(m_multiLayerForm);
    for (auto* c : m_multiLayerForm->findChildren<ParticleCompositionForm*>())
        if (c->compositionItem() == compositionItem)
            c->onParticleAdded(newParticle);
    m_multiLayerForm->updateUnits();
}

void SampleEditorController::setCoreFormFactor(ParticleCoreShellForm* widget,
                                               FormFactorItemCatalog::Type type)
{
    auto* particleCoreShell = widget->coreShellItem();

    if (particleCoreShell->core() == nullptr)
        particleCoreShell->createCore(materialModel());

    particleCoreShell->core()->setFormFactor(FormFactorItemCatalog::create(type));
    widget->createCoreWidgets();
    m_multiLayerForm->updateUnits();
    emit modified();
}

void SampleEditorController::setShellFormFactor(ParticleCoreShellForm* widget,
                                                FormFactorItemCatalog::Type type)
{
    auto* particleCoreShell = widget->coreShellItem();

    if (particleCoreShell->shell() == nullptr)
        particleCoreShell->createShell(materialModel());

    particleCoreShell->shell()->setFormFactor(FormFactorItemCatalog::create(type));
    widget->createShellWidgets();
    m_multiLayerForm->updateUnits();
    emit modified();
}

void SampleEditorController::removeParticle(ItemWithParticles* item)
{
    Q_UNUSED(item);
    // #baMigration ++ implement removeParticle
    //     ASSERT(m_multiLayerForm);
    //     //  search for particle layout parent (the first which can be found)
    //     ParticleLayoutItem* layout = nullptr;
    //     ParticleCompositionItem* composition = nullptr;
    //     SessionItem* parent = item->parent();
    //     do {
    //         layout = dynamic_cast<ParticleLayoutItem*>(parent);
    //         composition = dynamic_cast<ParticleCompositionItem*>(parent);
    //         parent = parent->parent();
    //     } while (parent && layout == nullptr && composition == nullptr);
    //
    //     if (layout != nullptr) {
    //         for (auto* c : m_multiLayerForm->findChildren<ParticleLayoutForm*>())
    //             if (c->layoutItem() == layout)
    //                 c->onAboutToRemoveParticle(item);
    //
    //         emit aboutToRemoveItem(item);
    //         layout->removeParticle(item);
    //         emit modified();
    //         return;
    //     }
    //
    //     if (composition != nullptr) {
    //         for (auto* c : m_multiLayerForm->findChildren<ParticleCompositionForm*>())
    //             if (c->compositionItem() == composition)
    //                 c->onAboutToRemoveParticle(item);
    //
    //         emit aboutToRemoveItem(item);
    //         composition->removeParticle(item);
    //         emit modified();
    //         return;
    //     }
}

void SampleEditorController::setDouble(double newValue, DoubleDescriptor d)
{
    m_undoStack.push(new CommandChangeValue(d.label, this, d.get(), newValue, d.path()));
    d.set(newValue);
    emit modified();
}

void SampleEditorController::setDoubleFromUndo(double newValue, const QString& path)
{
    ASSERT(m_multiLayerForm);

    DoubleSpinBox* spinBox = nullptr;
    for (auto* s : m_multiLayerForm->findChildren<DoubleSpinBox*>()) {
        if (s->valueDescriptor().path() == path) {
            spinBox = s;
            break;
        }
    }

    if (!spinBox)
        return;

    spinBox->valueDescriptor().set(newValue);

    m_multiLayerForm->ensureVisible(spinBox);
    QSignalBlocker b(spinBox);
    spinBox->setBaseValue(newValue);
    spinBox->setFocus();
    spinBox->selectAll();

    emit modified();
}

void SampleEditorController::setInt(int newValue, UIntDescriptor d)
{
    d.set(newValue);
    emit modified();
}

void SampleEditorController::setCurrentIndex(AbstractSelectionContainerForm* widget, int index,
                                             const AbstractSelectionDescriptor& d)
{
    d.setCurrentIndex(index);
    widget->createContent();
    m_multiLayerForm->updateUnits();
    emit modified();
}

QUndoStack* SampleEditorController::undoStack()
{
    return &m_undoStack;
}

MaterialModel* SampleEditorController::materialModel() const
{
    return m_document->materialModel();
}

ProjectDocument* SampleEditorController::projectDocument() const
{
    return m_document;
}

void SampleEditorController::selectMaterial(ItemWithMaterial* item,
                                            const QString& newMaterialIdentifier)
{
    item->setMaterial(newMaterialIdentifier);

    //  update Layer title
    ASSERT(m_multiLayerForm);
    for (auto* c : m_multiLayerForm->findChildren<LayerForm*>())
        if (c->layerItem() == item)
            c->updateTitle();

    // #baLayerEditor notify all material users (update link info)
    emit modified();
}

void SampleEditorController::setMaterialValue(ItemWithMaterial* item, double newValue,
                                              DoubleDescriptor d)
{
    setDouble(newValue, d);

    // -- notify all other users of this material (update values in the UI)
    ASSERT(m_multiLayerForm);
    for (auto* c : m_multiLayerForm->findChildren<MaterialInplaceForm*>())
        if (c->itemWithMaterial() != item
            && c->itemWithMaterial()->materialIdentifier() == item->materialIdentifier())
            c->updateValues();
}

void SampleEditorController::setDensityRelatedValue(InterferenceItem* interferenceItem,
                                                    double newValue, DoubleDescriptor d)
{
    setDouble(newValue, d);

    Q_UNUSED(interferenceItem);
    // #baMigration +++ implement this
    // -- notify the containing particle layout about changed value
    // auto* particlelayoutItem = dynamic_cast<ParticleLayoutItem*>(interferenceItem->parent());
    // if (!particlelayoutItem)
    //     return;
    //
    // // -- notify the containing particle layout UI about changed value
    // ASSERT(m_multiLayerForm);
    // for (auto* c : m_multiLayerForm->findChildren<ParticleLayoutForm*>())
    //     if (c->layoutItem() == particlelayoutItem) {
    //         c->updateDensityValue();
    //         break;
    //     }
}

void SampleEditorController::onStartingToMoveLayer()
{
    ASSERT(m_multiLayerForm);
    m_multiLayerForm->showAddLayerButtons(false);
}

void SampleEditorController::onStoppedToMoveLayer(QWidget* widgetToMove,
                                                  QWidget* moveAboveThisWidget)
{
    ASSERT(m_multiLayerForm);
    m_multiLayerForm->showAddLayerButtons(true);
    const auto* moveAboveThisLayerForm = m_multiLayerForm->findNextLayerForm(moveAboveThisWidget);
    auto* itemToMove = dynamic_cast<LayerForm*>(widgetToMove)->layerItem();
    auto* moveBeforeThisItem =
        moveAboveThisLayerForm != nullptr ? moveAboveThisLayerForm->layerItem() : nullptr;

    m_multiLayerItem->moveLayer(itemToMove, moveBeforeThisItem);
    m_multiLayerForm->onLayerMoved(itemToMove);

    // #baLayerEditor: tab order!

    emit modified();
}

void SampleEditorController::setMesoCrystalBasis(MesoCrystalForm* widget,
                                                 ItemWithParticlesCatalog::Type type)
{
    auto* meso = widget->mesoCrystalItem();
    meso->setBasis(ItemWithParticlesCatalog::create(type));
    widget->createBasisWidgets();
    m_multiLayerForm->updateUnits();
    emit modified();
}

void SampleEditorController::setMesoCrystalBasis(MesoCrystalForm* widget,
                                                 FormFactorItemCatalog::Type type)
{
    auto* meso = widget->mesoCrystalItem();
    auto* particle = dynamic_cast<ParticleItem*>(meso->basisParticle());
    if (particle == nullptr)
        particle = meso->createBasis<ParticleItem>();
    particle->setFormFactor(FormFactorItemCatalog::create(type));
    widget->createBasisWidgets();
    m_multiLayerForm->updateUnits();
    emit modified();
}

void SampleEditorController::selectInterference(InterferenceForm* widget, int newIndex)
{
    widget->layoutItem()->interference().setCurrentIndex(newIndex);
    widget->onInterferenceTypeChanged();
    m_multiLayerForm->updateUnits();

    // Disable/enable total density property in the particle layout, depending on type of
    // interference function.
    QWidget* parent = widget->parentWidget();
    while (parent != nullptr && dynamic_cast<ParticleLayoutForm*>(parent) == nullptr)
        parent = parent->parentWidget();

    if (auto* particleLayoutForm = dynamic_cast<ParticleLayoutForm*>(parent)) {
        particleLayoutForm->updateDensityEnabling();
        particleLayoutForm->updateDensityValue();
    }

    emit modified();
}

void SampleEditorController::setIntegrateOverXi(LatticeTypeSelectionForm* widget, bool newValue)
{
    widget->interferenceItem()->setXiIntegration(newValue);
    widget->onIntegrateOverXiChanged();
    emit modified();
}