Diagram view: All add action (text/shape/image) is now managed outside of diagram view by subclass of DVEventInterface

DVEventInterface :this abstract class is used by diagram view to manage is event action (mouse event).
For add new action to diagram view, we must to create subclass of DVEventInterface and give it to diagram view,
when diagram view get the new dvevent, they manage it, and delete it when action is finish. 


git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@3329 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/diagramview.h

@@ -20,13 +20,12 @@
 #include <QtGui>
 #include "elementslocation.h"
 #include "templatelocation.h"
-#include "qetgraphicsitem/qetshapeitem.h"
+
 class Conductor;
 class Diagram;
-class Element;
-class IndependentTextItem;
-class DiagramImageItem;
 class QETDiagramEditor;
+class DVEventInterface;
+
 /**
 	This class provides a widget to render an electric diagram in an editable,
 	interactive way.
@@ -38,18 +37,6 @@ class DiagramView : public QGraphicsView {
 	public:
 	DiagramView(Diagram * = 0, QWidget * = 0);
 	virtual ~DiagramView();
-	
-	Q_ENUMS(behavior)
-	enum behavior {noAction		   =1,
-				   addingText	   =2,
-				   addingImage	   =4,
-				   addingLine	   =8,
-				   addingRectangle =16,
-				   addingEllipse   =32,
-				   adding2PShape   =56,
-				   addingPolyline  =64,
-				   addingShape	   =120,
-				   dragView        =124};
 
 	private:
 	DiagramView(const DiagramView &);
@@ -61,15 +48,12 @@ class DiagramView : public QGraphicsView {
 	QAction *paste_here;
 	QAction *find_element_;
 	QPoint paste_here_pos;
-	behavior current_behavior;
 	bool fresh_focus_in_;               ///< Indicate the focus was freshly gained
 	ElementsLocation next_location_;
 	QPoint next_position_;
 	QPointF center_view_;
-	QImage image_to_add_;
-	QetShapeItem *newShapeItem;
 	QPointF rubber_band_origin;
-	bool m_polyline_added;
+	DVEventInterface *m_event_interface;
 	
 	// methods
 	public:
@@ -87,15 +71,9 @@ class DiagramView : public QGraphicsView {
 	bool hasDeletableItems();
 	void addText();
 	void editText();
-	void addImage();
-	void addLine();
-	void addRectangle();
-	void addEllipse();
-	void addPolyline();
 	void editImage();
 	void editShape();
-	IndependentTextItem *addDiagramTextAtPos(const QPointF &, const QString &text = 0);
-	DiagramImageItem *addDiagramImageAtPos(const QPointF &);
+	void setEventInterface (DVEventInterface *interface);
 	
 	protected:
 	virtual void mouseDoubleClickEvent(QMouseEvent *);
@@ -147,8 +125,6 @@ class DiagramView : public QGraphicsView {
 	void editTitleBlockTemplate(const QString &, bool);
 	/// Signal emitted after an item is added
 	void itemAdded();
-	/// Signal emmitted fater windows selection image have been canceled
-	void ImageAddedCanceled(bool);
 	/// Signal emmitted when diagram must be show
 	void showDiagram (Diagram *);