//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/View/Sample/LayerContainerForm.cpp
//! @brief     Implements class LayerContainerForm.
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2024
//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************

#include "GUI/View/Sample/LayerContainerForm.h"
#include "Base/Util/Assert.h"
#include "Base/Util/Vec.h"
#include "GUI/Model/Sample/ItemWithLayers.h"
#include "GUI/Model/Sample/LayerStackItem.h"
#include "GUI/Model/Sample/SampleItem.h"
#include "GUI/Model/Type/PredefinedColors.h"
#include "GUI/View/Base/ActionFactory.h"
#include "GUI/View/Sample/HeinzFormLayout.h"
#include "GUI/View/Sample/SampleEditorController.h"
#include "GUI/View/Widget/WidgetMoverButton.h"
#include <QMenu>

LayerContainerForm::LayerContainerForm(QWidget* parent, ItemWithLayers* item,
                                       SampleEditorController* ec, const QString& what)
    : CollapsibleGroupBox(parent, item->expandGroupbox)
    , m_layout(new HeinzFormLayout(ec))
    , m_item(item)
    , m_ec(ec)
{
    ASSERT(parent);
    setContentsMargins(5, 5, 5, 5);

    body()->setLayout(m_layout);

    //... top right corner actions

    // choose color
    {
        auto* chooseColorAction = new QAction(this);
        chooseColorAction->setText("Choose color");
        chooseColorAction->setIcon(QIcon(":/images/palette.svg"));
        chooseColorAction->setIconText("Choose color");
        chooseColorAction->setToolTip("Choose a color for this layer");
        auto* menu = new QMenu(this);
        chooseColorAction->setMenu(menu);
        addTitleAction(chooseColorAction);

        for (const auto& col : GUI::Colors::layerDefaults()) {
            QPixmap p(64, 64);
            p.fill(col);
            auto* ca = menu->addAction(QIcon(p), "");
            connect(ca, &QAction::triggered, [this, col] {
                m_item->setColor(col);
                updateColor();
            });
        }
    }
    // move
    {
        m_move_button = new WidgetMoverButton(this, this, 1);
        m_move_button->setToolTip("Move " + what + " up/down");
        connect(m_move_button, &WidgetMoverButton::finishedMoving, ec,
                &SampleEditorController::onStoppedToMoveLayer);
        addTitleWidget(m_move_button);
        m_structure_editing_widgets << m_move_button;
    }
    // show in real space
    {
        auto* showInRealspaceAction = ActionFactory::createShowInRealspaceAction(
            this, what, [ec, item] { ec->requestViewInRealspace(item); });
        addTitleAction(showInRealspaceAction);
    }
    // duplicate
    {
        auto* duplicate_action = ActionFactory::createDuplicateAction(
            this, what, [ec, item] { ec->duplicateItemWithLayers(item); });
        addTitleAction(duplicate_action);
    }
    // remove
    {
        auto* remove_action = ActionFactory::createRemoveAction(
            this, what, [ec, item] { ec->removeItemWithLayers(item); });
        addTitleAction(remove_action);
    }

    updateColor();
}

void LayerContainerForm::expand()
{
    setExpanded(true);
}

void LayerContainerForm::updatePositionDependentElements()
{
    LayerStackItem* parentStack = m_ec->sampleItem()->parentOfComponent(m_item);
    m_move_button->setVisible(parentStack && parentStack->componentItems().size() > 1);
}

void LayerContainerForm::updateColor()
{
    QColor bckgrCol = m_item->color();
    setStyleSheet("LayerContainerForm {background-color: " + bckgrCol.name(QColor::HexRgb) + "}");
}