Load project from xml is a little more faster

Like previous commit, in the method loadDiadrams() we call the method
diagramAdded(), in this method we call rebuildDiagramsMap()
updateAllTabsTitle() and these methods operate a loop for each existing
DiagramView.

Now loadDiagrams don't call diagramAdded (which must be used only when
user add a diagram during the use of QElectroTech) but make operations
itself and when all DiagramView are added, call rebuildDiagramsMap()
updateAllTabsTitle() only once.

sources/projectview.cpp

@@ -810,30 +810,39 @@ void ProjectView::loadDiagrams()
 
 	setDisplayFallbackWidget(m_project -> diagrams().isEmpty());
 
-	DialogWaiting *dialog = nullptr;
+	auto dialog = DialogWaiting::instance();
-	if(DialogWaiting::hasInstance())
+	if(dialog)
 	{
-		dialog = DialogWaiting::instance();
 		dialog->setTitle( tr("<p align=\"center\">"
 												"<b>Ouverture du projet en cours...</b><br/>"
 												"Création des onglets de folio :"
 												"</p>"));
 	}
-	for(Diagram *diagram : m_project->diagrams())
+
+	for(auto diagram : m_project->diagrams())
 	{
 		if(dialog)
 		{
 			dialog->setDetail(diagram->title());
 			dialog->setProgressBar(dialog->progressBarValue()+1);
 		}
-		diagramAdded(diagram);
+
+		auto dv = new DiagramView(diagram);
+		dv->setFrameStyle(QFrame::Plain | QFrame::NoFrame);
+
+		auto index = m_project->folioIndex(diagram);
+		m_tab->insertTab(index, dv, QET::Icons::Diagram, dv->title());
+		m_diagram_view_list.insert(index, dv);
+
+		connect(dv, &DiagramView::showDiagram,         this, QOverload<Diagram*>::of(&ProjectView::showDiagram));
+		connect(dv, &DiagramView::titleChanged,        this, &ProjectView::updateTabTitle);
+		connect(dv, &DiagramView::findElementRequired, this, &ProjectView::findElementRequired);
+		connect(&dv->diagram()->border_and_titleblock , &BorderTitleBlock::titleBlockFolioChanged, [this, dv]() {this->updateTabTitle(dv);});
 	}
 
-	if (DiagramView *dv = currentDiagram())
+	rebuildDiagramsMap();
-	{
+	updateAllTabsTitle();
-		dv->diagram()->loadElmtFolioSeq();
+
-		dv->diagram()->loadCndFolioSeq();
-	}
 	m_tab->setCurrentWidget(firstDiagram());
 }
 

sources/projectview.h

@@ -87,10 +87,14 @@ class ProjectView : public QWidget
 	private:
 		ProjectView(const ProjectView &);
 
+			//Method related to construction of this class
+		void setProject(QETProject *project);
+
+
+
 		// methods
 	public:
 		QETProject *project();
-		void setProject(QETProject *);
 		QList<DiagramView *> diagram_views() const;
 		DiagramView *currentDiagram() const;
 		void closeEvent(QCloseEvent *) override;