TEST a Merge branch 'XMLProperties'

it gets built let's test it for bugs

 Conflicts:
	sources/ElementsCollection/fileelementcollectionitem.cpp
	sources/QetGraphicsItemModeler/qetgraphicshandleritem.h
	sources/borderproperties.cpp
	sources/conductorproperties.cpp
	sources/conductorproperties.h
	sources/diagram.cpp
	sources/diagram.h
	sources/diagramprintdialog.cpp
	sources/diagramprintdialog.h
	sources/editor/graphicspart/customelementgraphicpart.cpp
	sources/editor/graphicspart/partarc.cpp
	sources/editor/graphicspart/partdynamictextfield.cpp
	sources/editor/graphicspart/partdynamictextfield.h
	sources/editor/graphicspart/partellipse.cpp
	sources/editor/graphicspart/partline.cpp
	sources/editor/graphicspart/partpolygon.cpp
	sources/editor/graphicspart/partrectangle.cpp
	sources/editor/graphicspart/partterminal.cpp
	sources/editor/graphicspart/partterminal.h
	sources/editor/graphicspart/parttext.cpp
	sources/properties/propertiesinterface.cpp
	sources/properties/propertiesinterface.h
	sources/properties/terminaldata.cpp
	sources/properties/terminaldata.h
	sources/properties/xrefproperties.cpp
	sources/properties/xrefproperties.h
	sources/qetgraphicsitem/conductor.cpp
	sources/qetgraphicsitem/conductor.h
	sources/qetgraphicsitem/conductortextitem.h
	sources/qetgraphicsitem/dynamicelementtextitem.h
	sources/qetgraphicsitem/element.cpp
	sources/qetgraphicsitem/element.h
	sources/qetgraphicsitem/elementtextitemgroup.h
	sources/qetgraphicsitem/slaveelement.cpp
	sources/qetgraphicsitem/slaveelement.h
	sources/qetgraphicsitem/terminal.cpp
	sources/qetgraphicsitem/terminal.h
	sources/qetproject.cpp
	sources/titleblockproperties.cpp

sources/qetgraphicsitem/terminal.h

@@ -20,6 +20,8 @@
 #include <QtWidgets>
 #include <QtXml>
 #include "qet.h"
+#include "propertiesinterface.h"
+
 class Conductor;
 class Diagram;
 class Element;
@@ -31,7 +33,7 @@ class TerminalData;
 	plug point for conductors.
 	This class handles all mouse events for connecting conductors
 */
-class Terminal : public QGraphicsObject
+class Terminal : public QGraphicsObject, public PropertiesInterface
 {
 	Q_OBJECT
 
@@ -78,6 +80,10 @@ class Terminal : public QGraphicsObject
 		Element  *parentElement       () const;
 		QUuid uuid                    () const;
 
+		int ID() const;
+		QPointF dockPos();
+		QPointF originPos();
+
 		QList<Conductor *> conductors() const;
 		Qet::Orientation orientation() const;
 		QPointF dockConductor() const;
@@ -89,10 +95,12 @@ class Terminal : public QGraphicsObject
 		bool isLinkedTo(Terminal *);
 		bool canBeLinkedTo(Terminal *);
 
+		void setID(int id);
+
 		// methods related to XML import/export
-		static bool valideXml(QDomElement  &);
-		bool fromXml (QDomElement &);
-		QDomElement toXml (QDomDocument &) const;
+		static bool valideXml(const QDomElement  &);
+		bool fromXml (const QDomElement &) override;
+		QDomElement toXml (QDomDocument &) const override;
 
 	protected:
 		// methods related to events management
@@ -109,7 +117,8 @@ class Terminal : public QGraphicsObject
 
 		static const qreal terminalSize;
 		static const qreal Z;
-		// Various static colors used for hover effects
+		// Various static colors used for hover effects.
+		// The assignement is in the cpp file
 		/// default color
 		static QColor neutralColor;
 		/// color for legal actions
@@ -142,16 +151,18 @@ class Terminal : public QGraphicsObject
 		*/
 		QRectF *br_{nullptr};
 		/// Last terminal seen through an attached conductor
-		Terminal *previous_terminal_;
+		Terminal *previous_terminal_{nullptr};
 		/// Whether the mouse pointer is hovering the terminal
-		bool hovered_;
+		bool hovered_{false};
 		/// Color used for the hover effect
-		QColor hovered_color_;
+		QColor hovered_color_{Terminal::hovered_color_};
 		/// Number of Terminal
 		QString number_terminal_;
-		/// Name of Terminal
-		QString name_terminal_;
-		bool name_terminal_hidden;
+
+		bool name_terminal_hidden{true};
+
+		/// legacy id used by the conductor to find the terminal. From 0.8x on the uuid is used instead.
+		int m_id{-1};
 
 	private:
 		void init(QString number, QString name, bool hiddenName);
@@ -176,16 +187,6 @@ inline QString Terminal::number() const
 {
 	return(number_terminal_);
 }
-
-/**
-	@brief Terminal::name
-	@return the name of terminal.
-*/
-inline QString Terminal::name() const
-{
-	return(name_terminal_);
-}
-
 QList<Terminal *> relatedPotentialTerminal (const Terminal *terminal,
 						const bool all_diagram = true);