Method newProject

src/frontend/MainWin.cpp:1289–1368

! creates a new empty project. Returns \c true, if a new project was created. the parameter \c createInitialContent whether a default content (new worksheet, etc. ) has to be created automatically (it's \c false if a project is opened, \c true if a new project is created). */

	has to be created automatically (it's \c false if a project is opened, \c true if a new project is created).
*/
bool MainWin::newProject(bool createInitialContent) {
	// close the current project, if available
	if (!closeProject())
		return false;

	QApplication::processEvents(QEventLoop::AllEvents, 100);

	m_project = new Project();
	undoStackIndexLastSave = 0;
	m_currentAspect = m_project;
	m_currentFolder = m_project;

	KConfigGroup group = Settings::group(QStringLiteral("Settings_General"));
	auto vis = Project::DockVisibility(group.readEntry("DockVisibility", 0));
	m_project->setDockVisibility(vis);
	if (vis == Project::DockVisibility::folderOnly)
		m_visibilityFolderAction->setChecked(true);
	else if (vis == Project::DockVisibility::folderAndSubfolders)
		m_visibilitySubfolderAction->setChecked(true);
	else
		m_visibilityAllAction->setChecked(true);

	m_aspectTreeModel = new AspectTreeModel(m_project, this);
	connect(m_aspectTreeModel, &AspectTreeModel::statusInfo, [=](const QString& text) {
		statusBar()->showMessage(text);
	});

	m_newProjectAction->setEnabled(false);
#ifdef HAVE_PURPOSE
	m_shareAction->setEnabled(false); // sharing is only possible after the project was saved to a file
#endif

	m_projectExplorer->setModel(m_aspectTreeModel);
	m_projectExplorer->setProject(m_project);
	m_projectExplorer->setCurrentAspect(m_project);
	m_worksheetPreviewWidget->setProject(m_project);
	m_guiObserver = new GuiObserver(this); // initialize after all docks were createad

	connect(m_project, &Project::childAspectAdded, this, &MainWin::handleAspectAdded);
	connect(m_project, &Project::childAspectRemoved, this, &MainWin::handleAspectRemoved);
	connect(m_project, &Project::childAspectAboutToBeRemoved, this, &MainWin::handleAspectAboutToBeRemoved);
	connect(m_project, SIGNAL(statusInfo(QString)), statusBar(), SLOT(showMessage(QString)));
	connect(m_project, &Project::changed, this, &MainWin::projectChanged);
	connect(m_project, &Project::requestProjectContextMenu, this, &MainWin::createContextMenu);
	connect(m_project, &Project::requestFolderContextMenu, this, &MainWin::createFolderContextMenu);
	connect(m_project, &Project::mdiWindowVisibilityChanged, this, &MainWin::updateDockWindowVisibility);
	connect(m_project, &Project::closeRequested, this, &MainWin::closeProject);

	// depending on the settings, create the default project content (add a worksheet, etc.)
	if (createInitialContent) {
		const auto newProject = (NewProject)group.readEntry(QStringLiteral("NewProject"), static_cast<int>(NewProject::WithSpreadsheet));
		switch (newProject) {
		case NewProject::WithWorksheet:
			newWorksheet();
			break;
		case NewProject::WithSpreadsheet:
			newSpreadsheet();
			break;