Method selectedAspectsChanged

src/frontend/GuiObserver.cpp:171–514

! called on selection changes in the project explorer. Determines the type of the currently selected objects (aspects) and activates the corresponding dockwidgets, toolbars etc. */

  and activates the corresponding dockwidgets, toolbars etc.
*/
void GuiObserver::selectedAspectsChanged(const QList<AbstractAspect*>& selectedAspects) {
	auto clearDock = [&]() {
		if (m_mainWindow->stackedWidget->currentWidget())
			m_mainWindow->stackedWidget->currentWidget()->hide();

		m_mainWindow->m_propertiesDock->setWindowTitle(i18nc("@title:window", "Properties"));
	};

	if (selectedAspects.isEmpty() || selectedAspects.front() == nullptr) {
		clearDock();
		return;
	}

	const AspectType type{selectedAspects.front()->type()};
	DEBUG(Q_FUNC_INFO << ", type: " << STDSTRING(AbstractAspect::typeName(type)))

	// update cursor dock
	if (m_mainWindow->cursorWidget) {
		if (type == AspectType::Worksheet) {
			auto* worksheet = static_cast<Worksheet*>(selectedAspects.front());
			m_mainWindow->cursorWidget->setWorksheet(worksheet);
		} else {
			auto* parent = selectedAspects.front()->parent(AspectType::Worksheet);
			if (parent) {
				auto* worksheet = static_cast<Worksheet*>(parent);
				m_mainWindow->cursorWidget->setWorksheet(worksheet);
			}
		}
	}

	// Check, whether objects of different types were selected.
	// Don't show any dock widgets in this case.
	for (const auto* aspect : selectedAspects) {
		if (aspect->type() != type) {
			clearDock();
			return;
		}
	}

	switch (type) {
	case AspectType::Spreadsheet:
		m_mainWindow->m_propertiesDock->setWindowTitle(i18nc("@title:window", "Properties: Spreadsheet"));
		raiseDockConnect(m_spreadsheetDock, m_mainWindow->statusBar(), m_mainWindow->stackedWidget);
		m_spreadsheetDock->setSpreadsheets(castList<Spreadsheet>(selectedAspects));
		break;
	case AspectType::StatisticsSpreadsheet:
		m_mainWindow->m_propertiesDock->setWindowTitle(i18nc("@title:window", "Properties: Column Statistics"));
		raiseDockConnect(m_statisticsSpreadsheetDock, m_mainWindow->statusBar(), m_mainWindow->stackedWidget);
		m_statisticsSpreadsheetDock->setSpreadsheets(castList<StatisticsSpreadsheet>(selectedAspects));
		break;
	case AspectType::Column: {
#ifdef HAVE_CANTOR_LIBS
		auto* casParent = dynamic_cast<Notebook*>(selectedAspects.first()->parentAspect());
		if (casParent) {
			// a column from a CAS-worksheets was selected, show the dock widget for the CAS worksheet
			raiseDockConnect(m_notebookDock, m_mainWindow->statusBar(), m_mainWindow->stackedWidget);
			m_mainWindow->m_propertiesDock->setWindowTitle(i18nc("@title:window %1 is a Cantor backend", "%1 Worksheet", casParent->backendName()));
			m_notebookDock->setNotebooks(QList<Notebook*>{casParent});