qt-creator/src/libs/modelinglib/qmt/diagram_scene/items/classitem.cpp

/****************************************************************************
**
** Copyright (C) 2016 Jochen Becher
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/

#include "classitem.h"

#include "qmt/controller/namecontroller.h"
#include "qmt/diagram/dclass.h"
#include "qmt/diagram_scene/diagramsceneconstants.h"
#include "qmt/diagram_scene/diagramscenemodel.h"
#include "qmt/diagram_scene/parts/contextlabelitem.h"
#include "qmt/diagram_scene/parts/customiconitem.h"
#include "qmt/diagram_scene/parts/editabletextitem.h"
#include "qmt/diagram_scene/parts/relationstarter.h"
#include "qmt/diagram_scene/parts/stereotypesitem.h"
#include "qmt/diagram_scene/parts/templateparameterbox.h"
#include "qmt/infrastructure/contextmenuaction.h"
#include "qmt/infrastructure/geometryutilities.h"
#include "qmt/infrastructure/qmtassert.h"
#include "qmt/model/mclass.h"
#include "qmt/model/mclassmember.h"
#include "qmt/model_controller/modelcontroller.h"
#include "qmt/stereotype/stereotypecontroller.h"
#include "qmt/stereotype/stereotypeicon.h"
#include "qmt/style/stylecontroller.h"
#include "qmt/style/style.h"
#include "qmt/tasks/diagramscenecontroller.h"
#include "qmt/tasks/ielementtasks.h"

#include <QGraphicsScene>
#include <QGraphicsRectItem>
#include <QGraphicsSimpleTextItem>
#include <QGraphicsLineItem>
#include <QBrush>
#include <QPen>
#include <QFont>
#include <QMenu>

#include <algorithm>

namespace qmt {

static const qreal MINIMUM_AUTO_WIDTH = 80.0;
static const qreal MINIMUM_AUTO_HEIGHT = 60.0;
static const qreal BODY_VERT_BORDER = 4.0;
static const qreal BODY_HORIZ_BORDER = 4.0;

ClassItem::ClassItem(DClass *klass, DiagramSceneModel *diagramSceneModel, QGraphicsItem *parent)
    : ObjectItem(klass, diagramSceneModel, parent)
{
}

ClassItem::~ClassItem()
{
}

void ClassItem::update()
{
    prepareGeometryChange();

    updateStereotypeIconDisplay();

    auto diagramClass = dynamic_cast<DClass *>(object());
    QMT_CHECK(diagramClass);

    const Style *style = adaptedStyle(stereotypeIconId());

    if (diagramClass->showAllMembers()) {
        updateMembers(style);
    } else {
        m_attributesText.clear();
        m_methodsText.clear();
    }

    // custom icon
    if (stereotypeIconDisplay() == StereotypeIcon::DisplayIcon) {
        if (!m_customIcon)
            m_customIcon = new CustomIconItem(diagramSceneModel(), this);
        m_customIcon->setStereotypeIconId(stereotypeIconId());
        m_customIcon->setBaseSize(stereotypeIconMinimumSize(m_customIcon->stereotypeIcon(), CUSTOM_ICON_MINIMUM_AUTO_WIDTH, CUSTOM_ICON_MINIMUM_AUTO_HEIGHT));
        m_customIcon->setBrush(style->fillBrush());
        m_customIcon->setPen(style->outerLinePen());
        m_customIcon->setZValue(SHAPE_ZVALUE);
    } else if (m_customIcon) {
        m_customIcon->scene()->removeItem(m_customIcon);
        delete m_customIcon;
        m_customIcon = 0;
    }

    // shape
    if (!m_customIcon) {
        if (!m_shape)
            m_shape = new QGraphicsRectItem(this);
        m_shape->setBrush(style->fillBrush());
        m_shape->setPen(style->outerLinePen());
        m_shape->setZValue(SHAPE_ZVALUE);
    } else if (m_shape){
        m_shape->scene()->removeItem(m_shape);
        delete m_shape;
        m_shape = 0;
    }

    // stereotypes
    updateStereotypes(stereotypeIconId(), stereotypeIconDisplay(), style);

    // namespace
    if (!diagramClass->umlNamespace().isEmpty()) {
        if (!m_namespace)
            m_namespace = new QGraphicsSimpleTextItem(this);
        m_namespace->setFont(style->smallFont());
        m_namespace->setBrush(style->textBrush());
        m_namespace->setText(diagramClass->umlNamespace());
    } else if (m_namespace) {
        m_namespace->scene()->removeItem(m_namespace);
        delete m_namespace;
        m_namespace = 0;
    }

    // class name
    updateNameItem(style);

    // context
    if (showContext()) {
        if (!m_contextLabel)
            m_contextLabel = new ContextLabelItem(this);
        m_contextLabel->setFont(style->smallFont());
        m_contextLabel->setBrush(style->textBrush());
        m_contextLabel->setContext(object()->context());
    } else if (m_contextLabel) {
        m_contextLabel->scene()->removeItem(m_contextLabel);
        delete m_contextLabel;
        m_contextLabel = 0;
    }

    // attributes separator
    if (m_shape || !m_attributesText.isEmpty() || !m_methodsText.isEmpty()) {
        if (!m_attributesSeparator)
            m_attributesSeparator = new QGraphicsLineItem(this);
        m_attributesSeparator->setPen(style->innerLinePen());
        m_attributesSeparator->setZValue(SHAPE_DETAILS_ZVALUE);
    } else if (m_attributesSeparator) {
        m_attributesSeparator->scene()->removeItem(m_attributesSeparator);
        delete m_attributesSeparator;
        m_attributesSeparator = 0;
    }

    // attributes
    if (!m_attributesText.isEmpty()) {
        if (!m_attributes)
            m_attributes = new QGraphicsTextItem(this);
        m_attributes->setFont(style->normalFont());
        //m_attributes->setBrush(style->textBrush());
        m_attributes->setDefaultTextColor(style->textBrush().color());
        m_attributes->setHtml(m_attributesText);
    } else if (m_attributes) {
        m_attributes->scene()->removeItem(m_attributes);
        delete m_attributes;
        m_attributes = 0;
    }

    // methods separator
    if (m_shape || !m_attributesText.isEmpty() || !m_methodsText.isEmpty()) {
        if (!m_methodsSeparator)
            m_methodsSeparator = new QGraphicsLineItem(this);
        m_methodsSeparator->setPen(style->innerLinePen());
        m_methodsSeparator->setZValue(SHAPE_DETAILS_ZVALUE);
    } else if (m_methodsSeparator) {
        m_methodsSeparator->scene()->removeItem(m_methodsSeparator);
        delete m_methodsSeparator;
        m_methodsSeparator = 0;
    }

    // methods
    if (!m_methodsText.isEmpty()) {
        if (!m_methods)
            m_methods = new QGraphicsTextItem(this);
        m_methods->setFont(style->normalFont());
        //m_methods->setBrush(style->textBrush());
        m_methods->setDefaultTextColor(style->textBrush().color());
        m_methods->setHtml(m_methodsText);
    } else if (m_methods) {
        m_methods->scene()->removeItem(m_methods);
        delete m_methods;
        m_methods = 0;
    }

    // template parameters
    if (templateDisplay() == DClass::TemplateBox && !diagramClass->templateParameters().isEmpty()) {
        // TODO due to a bug in Qt the m_nameItem may get focus back when this item is newly created
        // 1. Select name item of class without template
        // 2. Click into template property (item name loses focus) and enter a letter
        // 3. Template box is created which gives surprisingly focus back to item name
        if (!m_templateParameterBox)
            m_templateParameterBox = new TemplateParameterBox(this);
        QPen pen = style->outerLinePen();
        pen.setStyle(Qt::DashLine);
        m_templateParameterBox->setPen(pen);
        m_templateParameterBox->setBrush(QBrush(Qt::white));
        m_templateParameterBox->setFont(style->smallFont());
        m_templateParameterBox->setTextBrush(style->textBrush());
        m_templateParameterBox->setTemplateParameters(diagramClass->templateParameters());
    } else if (m_templateParameterBox) {
        m_templateParameterBox->scene()->removeItem(m_templateParameterBox);
        delete m_templateParameterBox;
        m_templateParameterBox = 0;
    }

    updateSelectionMarker(m_customIcon);

    // relation starters
    if (isFocusSelected()) {
        if (!m_relationStarter) {
            m_relationStarter = new RelationStarter(this, diagramSceneModel(), 0);
            scene()->addItem(m_relationStarter);
            m_relationStarter->setZValue(RELATION_STARTER_ZVALUE);
            m_relationStarter->addArrow(QLatin1String("inheritance"), ArrowItem::ShaftSolid, ArrowItem::HeadTriangle);
            m_relationStarter->addArrow(QLatin1String("dependency"), ArrowItem::ShaftDashed, ArrowItem::HeadOpen);
            m_relationStarter->addArrow(QLatin1String("association"), ArrowItem::ShaftSolid, ArrowItem::HeadFilledTriangle);
        }
    } else if (m_relationStarter) {
        scene()->removeItem(m_relationStarter);
        delete m_relationStarter;
        m_relationStarter = 0;
    }

    updateAlignmentButtons();
    updateGeometry();
}

bool ClassItem::intersectShapeWithLine(const QLineF &line, QPointF *intersectionPoint, QLineF *intersectionLine) const
{
    QPolygonF polygon;
    // TODO if m_customIcon then use that shape + label's shape as intersection path
    QRectF rect = object()->rect();
    rect.translate(object()->pos());
    polygon << rect.topLeft() << rect.topRight() << rect.bottomRight() << rect.bottomLeft() << rect.topLeft();
    return GeometryUtilities::intersect(polygon, line, intersectionPoint, intersectionLine);
}

QSizeF ClassItem::minimumSize() const
{
    return calcMinimumGeometry();
}

QPointF ClassItem::relationStartPos() const
{
    return pos();
}

void ClassItem::relationDrawn(const QString &id, const QPointF &toScenePos, const QList<QPointF> &intermediatePoints)
{
    DElement *targetElement = diagramSceneModel()->findTopmostElement(toScenePos);
    if (targetElement) {
        if (id == QLatin1String("inheritance")) {
            auto baseClass = dynamic_cast<DClass *>(targetElement);
            if (baseClass) {
                auto derivedClass = dynamic_cast<DClass *>(object());
                QMT_CHECK(derivedClass);
                diagramSceneModel()->diagramSceneController()->createInheritance(derivedClass, baseClass, intermediatePoints, diagramSceneModel()->diagram());
            }
        } else if (id == QLatin1String("dependency")) {
            auto dependantObject = dynamic_cast<DObject *>(targetElement);
            if (dependantObject)
                diagramSceneModel()->diagramSceneController()->createDependency(object(), dependantObject, intermediatePoints, diagramSceneModel()->diagram());
        } else if (id == QLatin1String("association")) {
            auto assoziatedClass = dynamic_cast<DClass *>(targetElement);
            if (assoziatedClass) {
                auto derivedClass = dynamic_cast<DClass *>(object());
                QMT_CHECK(derivedClass);
                diagramSceneModel()->diagramSceneController()->createAssociation(derivedClass, assoziatedClass, intermediatePoints, diagramSceneModel()->diagram());
            }
        }
    }
}

bool ClassItem::extendContextMenu(QMenu *menu)
{
    bool extended = false;
    if (diagramSceneModel()->diagramSceneController()->elementTasks()->hasClassDefinition(object(), diagramSceneModel()->diagram())) {
        menu->addAction(new ContextMenuAction(tr("Show Definition"), QStringLiteral("showDefinition"), menu));
        extended = true;
    }
    return extended;
}

bool ClassItem::handleSelectedContextMenuAction(QAction *action)
{
    auto klassAction = dynamic_cast<ContextMenuAction *>(action);
    if (klassAction) {
        if (klassAction->id() == QStringLiteral("showDefinition")) {
            diagramSceneModel()->diagramSceneController()->elementTasks()->openClassDefinition(object(), diagramSceneModel()->diagram());
            return true;
        }
    }
    return false;
}

QString ClassItem::buildDisplayName() const
{
    auto diagramClass = dynamic_cast<DClass *>(object());
    QMT_CHECK(diagramClass);

    QString name;
    if (templateDisplay() == DClass::TemplateName && !diagramClass->templateParameters().isEmpty()) {
        name = object()->name();
        name += QLatin1Char('<');
        bool first = true;
        foreach (const QString &p, diagramClass->templateParameters()) {
            if (!first)
                name += QLatin1Char(',');
            name += p;
            first = false;
        }
        name += QLatin1Char('>');
    } else {
        name = object()->name();
    }
    return name;
}

void ClassItem::setFromDisplayName(const QString &displayName)
{
    if (templateDisplay() == DClass::TemplateName) {
        QString name;
        QStringList templateParameters;
        // NOTE namespace is ignored because it has its own edit field
        if (NameController::parseClassName(displayName, 0, &name, &templateParameters)) {
            auto diagramClass = dynamic_cast<DClass *>(object());
            QMT_CHECK(diagramClass);
            ModelController *modelController = diagramSceneModel()->diagramSceneController()->modelController();
            MClass *mklass = modelController->findObject<MClass>(diagramClass->modelUid());
            if (mklass && (name != mklass->name() || templateParameters != mklass->templateParameters())) {
                modelController->startUpdateObject(mklass);
                mklass->setName(name);
                mklass->setTemplateParameters(templateParameters);
                modelController->finishUpdateObject(mklass, false);
            }
        }
    } else {
        ObjectItem::setFromDisplayName(displayName);
    }
}

DClass::TemplateDisplay ClassItem::templateDisplay() const
{
    auto diagramClass = dynamic_cast<DClass *>(object());
    QMT_CHECK(diagramClass);

    DClass::TemplateDisplay templateDisplay = diagramClass->templateDisplay();
    if (templateDisplay == DClass::TemplateSmart) {
        if (m_customIcon)
            templateDisplay = DClass::TemplateName;
        else
            templateDisplay = DClass::TemplateBox;
    }
    return templateDisplay;
}

QSizeF ClassItem::calcMinimumGeometry() const
{
    double width = 0.0;
    double height = 0.0;

    if (m_customIcon) {
        return stereotypeIconMinimumSize(m_customIcon->stereotypeIcon(),
                                         CUSTOM_ICON_MINIMUM_AUTO_WIDTH, CUSTOM_ICON_MINIMUM_AUTO_HEIGHT);
    }

    height += BODY_VERT_BORDER;
    if (CustomIconItem *stereotypeIconItem = this->stereotypeIconItem()) {
        width = std::max(width, stereotypeIconItem->boundingRect().width() + 2 * BODY_HORIZ_BORDER);
        height += stereotypeIconItem->boundingRect().height();
    }
    if (StereotypesItem *stereotypesItem = this->stereotypesItem()) {
        width = std::max(width, stereotypesItem->boundingRect().width() + 2 * BODY_HORIZ_BORDER);
        height += stereotypesItem->boundingRect().height();
    }
    if (m_namespace) {
        width = std::max(width, m_namespace->boundingRect().width() + 2 * BODY_HORIZ_BORDER);
        height += m_namespace->boundingRect().height();
    }
    if (nameItem()) {
        width = std::max(width, nameItem()->boundingRect().width() + 2 * BODY_HORIZ_BORDER);
        height += nameItem()->boundingRect().height();
    }
    if (m_contextLabel)
        height += m_contextLabel->height();
    if (m_attributesSeparator)
        height += 8.0;
    if (m_attributes) {
        width = std::max(width, m_attributes->boundingRect().width() + 2 * BODY_HORIZ_BORDER);
        height += m_attributes->boundingRect().height();
    }
    if (m_methodsSeparator)
        height += 8.0;
    if (m_methods) {
        width = std::max(width, m_methods->boundingRect().width() + 2 * BODY_HORIZ_BORDER);
        height += m_methods->boundingRect().height();
    }
    height += BODY_VERT_BORDER;

    return GeometryUtilities::ensureMinimumRasterSize(QSizeF(width, height), 2 * RASTER_WIDTH, 2 * RASTER_HEIGHT);
}

void ClassItem::updateGeometry()
{
    prepareGeometryChange();

    // calc width and height
    double width = 0.0;
    double height = 0.0;

    QSizeF geometry = calcMinimumGeometry();
    width = geometry.width();
    height = geometry.height();

    if (object()->isAutoSized()) {
        if (!m_customIcon) {
            if (width < MINIMUM_AUTO_WIDTH)
                width = MINIMUM_AUTO_WIDTH;
            if (height < MINIMUM_AUTO_HEIGHT)
                height = MINIMUM_AUTO_HEIGHT;
        }
    } else {
        QRectF rect = object()->rect();
        if (rect.width() > width)
            width = rect.width();
        if (rect.height() > height)
            height = rect.height();
    }

    // update sizes and positions
    double left = -width / 2.0;
    double right = width / 2.0;
    double top = -height / 2.0;
    //double bottom = height / 2.0;
    double y = top;

    setPos(object()->pos());

    QRectF rect(left, top, width, height);

    // the object is updated without calling DiagramController intentionally.
    // attribute rect is not a real attribute stored on DObject but
    // a backup for the graphics item used for manual resized and persistency.
    object()->setRect(rect);

    if (m_customIcon) {
        m_customIcon->setPos(left, top);
        m_customIcon->setActualSize(QSizeF(width, height));
        y += height;
    }

    if (m_shape)
        m_shape->setRect(rect);

    y += BODY_VERT_BORDER;
    if (CustomIconItem *stereotypeIconItem = this->stereotypeIconItem()) {
        stereotypeIconItem->setPos(right - stereotypeIconItem->boundingRect().width() - BODY_HORIZ_BORDER, y);
        y += stereotypeIconItem->boundingRect().height();
    }
    if (StereotypesItem *stereotypesItem = this->stereotypesItem()) {
        stereotypesItem->setPos(-stereotypesItem->boundingRect().width() / 2.0, y);
        y += stereotypesItem->boundingRect().height();
    }
    if (m_namespace) {
        m_namespace->setPos(-m_namespace->boundingRect().width() / 2.0, y);
        y += m_namespace->boundingRect().height();
    }
    if (nameItem()) {
        nameItem()->setPos(-nameItem()->boundingRect().width() / 2.0, y);
        y += nameItem()->boundingRect().height();
    }
    if (m_contextLabel) {
        if (m_customIcon)
            m_contextLabel->resetMaxWidth();
        else
            m_contextLabel->setMaxWidth(width - 2 * BODY_HORIZ_BORDER);
        m_contextLabel->setPos(-m_contextLabel->boundingRect().width() / 2.0, y);
        y += m_contextLabel->boundingRect().height();
    }
    if (m_attributesSeparator) {
        m_attributesSeparator->setLine(left, 4.0, right, 4.0);
        m_attributesSeparator->setPos(0, y);
        y += 8.0;
    }
    if (m_attributes) {
        if (m_customIcon)
            m_attributes->setPos(-m_attributes->boundingRect().width() / 2.0, y);
        else
            m_attributes->setPos(left + BODY_HORIZ_BORDER, y);
        y += m_attributes->boundingRect().height();
    }
    if (m_methodsSeparator) {
        m_methodsSeparator->setLine(left, 4.0, right, 4.0);
        m_methodsSeparator->setPos(0, y);
        y += 8.0;
    }
    if (m_methods) {
        if (m_customIcon)
            m_methods->setPos(-m_methods->boundingRect().width() / 2.0, y);
        else
            m_methods->setPos(left + BODY_HORIZ_BORDER, y);
        y += m_methods->boundingRect().height();
    }

    if (m_templateParameterBox) {
        m_templateParameterBox->setBreakLines(false);
        double x = right - m_templateParameterBox->boundingRect().width() * 0.8;
        if (x < 0) {
            m_templateParameterBox->setBreakLines(true);
            x = right - m_templateParameterBox->boundingRect().width() * 0.8;
        }
        if (x < 0)
            x = 0;
        m_templateParameterBox->setPos(x, top - m_templateParameterBox->boundingRect().height() + BODY_VERT_BORDER);
    }

    updateSelectionMarkerGeometry(rect);

    if (m_relationStarter)
        m_relationStarter->setPos(mapToScene(QPointF(right + 8.0, top)));

    updateAlignmentButtonsGeometry(rect);
    updateDepth();
}

void ClassItem::updateMembers(const Style *style)
{
    Q_UNUSED(style)

    m_attributesText.clear();
    m_methodsText.clear();

    MClassMember::Visibility attributesVisibility = MClassMember::VisibilityUndefined;
    MClassMember::Visibility methodsVisibility = MClassMember::VisibilityUndefined;
    QString attributesGroup;
    QString methodsGroup;

    MClassMember::Visibility *currentVisibility = 0;
    QString *currentGroup = 0;
    QString *text = 0;

    auto dclass = dynamic_cast<DClass *>(object());
    QMT_CHECK(dclass);

    foreach (const MClassMember &member, dclass->members()) {
        switch (member.memberType()) {
        case MClassMember::MemberUndefined:
            QMT_CHECK(false);
            break;
        case MClassMember::MemberAttribute:
            currentVisibility = &attributesVisibility;
            currentGroup = &attributesGroup;
            text = &m_attributesText;
            break;
        case MClassMember::MemberMethod:
            currentVisibility = &methodsVisibility;
            currentGroup = &methodsGroup;
            text = &m_methodsText;
            break;
        }

        if (text && !text->isEmpty())
            *text += QStringLiteral("<br/>");

        bool addNewline = false;
        bool addSpace = false;
        if (currentVisibility)
            *currentVisibility = member.visibility();
        if (member.group() != currentGroup) {
            *text += QString(QStringLiteral("[%1]")).arg(member.group());
            addNewline = true;
            *currentGroup = member.group();
        }
        if (addNewline)
            *text += QStringLiteral("<br/>");

        bool haveSignal = false;
        bool haveSlot = false;
        if (member.visibility() != MClassMember::VisibilityUndefined) {
            QString vis;
            switch (member.visibility()) {
            case MClassMember::VisibilityUndefined:
                break;
            case MClassMember::VisibilityPublic:
                vis = QStringLiteral("+");
                addSpace = true;
                break;
            case MClassMember::VisibilityProtected:
                vis = QStringLiteral("#");
                addSpace = true;
                break;
            case MClassMember::VisibilityPrivate:
                vis = QStringLiteral("-");
                addSpace = true;
                break;
            case MClassMember::VisibilitySignals:
                vis = QStringLiteral("&gt;");
                haveSignal = true;
                addSpace = true;
                break;
            case MClassMember::VisibilityPrivateSlots:
                vis = QStringLiteral("-$");
                haveSlot = true;
                addSpace = true;
                break;
            case MClassMember::VisibilityProtectedSlots:
                vis = QStringLiteral("#$");
                haveSlot = true;
                addSpace = true;
                break;
            case MClassMember::VisibilityPublicSlots:
                vis = QStringLiteral("+$");
                haveSlot = true;
                addSpace = true;
                break;
            }
            *text += vis;
        }

        if (member.properties() & MClassMember::PropertyQsignal && !haveSignal) {
            *text += QStringLiteral("&gt;");
            addSpace = true;
        }
        if (member.properties() & MClassMember::PropertyQslot && !haveSlot) {
            *text += QStringLiteral("$");
            addSpace = true;
        }
        if (addSpace)
            *text += QStringLiteral(" ");
        if (member.properties() & MClassMember::PropertyQinvokable)
            *text += QStringLiteral("invokable ");
        if (!member.stereotypes().isEmpty()) {
            *text += StereotypesItem::format(member.stereotypes());
            *text += QStringLiteral(" ");
        }
        if (member.properties() & MClassMember::PropertyStatic)
            *text += QStringLiteral("static ");
        if (member.properties() & MClassMember::PropertyVirtual)
            *text += QStringLiteral("virtual ");
        *text += member.declaration().toHtmlEscaped();
        if (member.properties() & MClassMember::PropertyConst)
            *text += QStringLiteral(" const");
        if (member.properties() & MClassMember::PropertyOverride)
            *text += QStringLiteral(" override");
        if (member.properties() & MClassMember::PropertyFinal)
            *text += QStringLiteral(" final");
        if (member.properties() & MClassMember::PropertyAbstract)
            *text += QStringLiteral(" = 0");
    }
}

} // namespace qmt