Method copy

src/backend/core/AbstractAspect.cpp:733–762

! * copies the aspect to the clipboard. The standard XML-serialization * via AbstractAspect::load() is used. */

 * via AbstractAspect::load() is used.
 */
void AbstractAspect::copy() {
	QString output;
	QXmlStreamWriter writer(&output);
	writer.writeStartDocument();

	// add LabPlot's copy&paste "identifier"
	writer.writeDTD(QLatin1String("<!DOCTYPE LabPlotCopyPasteXML>"));
	writer.writeStartElement(QStringLiteral("copy_content")); // root element

	// write the type of the copied aspect
	writer.writeStartElement(QStringLiteral("type"));
	writer.writeAttribute(QStringLiteral("value"), QString::number(static_cast<int>(m_type)));
	writer.writeEndElement();

	setSuppressWriteUuid(true);
	const auto& children = this->children(AspectType::AbstractAspect, {ChildIndexFlag::IncludeHidden, ChildIndexFlag::Recursive});
	for (const auto& child : children)
		child->setSuppressWriteUuid(true);

	// write the aspect itself
	save(&writer);

	for (const auto& child : children)
		child->setSuppressWriteUuid(false);
	setSuppressWriteUuid(false);

	writer.writeEndElement(); // end the root-element
	writer.writeEndDocument();
	QApplication::clipboard()->setText(output);
}

/*!
 * duplicates the aspect in the project hierarchy, the copy of the duplicated aspect is