/**
	 * @Create a node in the current diagram
	 * @param name of the element (if needed can be null if the element has no name)
	 * @param position Position where the node has to be created (FIXME for now only location inside the current diagram work. Outside the diagram error it do not expand automaticallyà)
    	 * @param tool Name of the tool used to create the diagram (e.g in activity diagram  "Activity Partition" @see {@link ActivityDiagramConstants}
	 * @param dim Dimension of the drag (can be null if it's a simple click)     
	 * @return return {@link SWTBotGefEditor} of the newly element or null if it has failed
	 */
private SWTBotGefEditPart createNodeElement(String name, Point position, String tool, Dimension dim, NameEditMode mode) {
		
		this.activateTool(tool);
		if(dim != null && (dim.height != 0 || dim.width != 0)) {
			this.drag(position.x, position.y, position.x + dim.width, position.y + dim.height);
		} else {
			this.click(position.x, position.y+ MOVE);		
		}
		bot.waitUntil(new WaitForEditsPartAfterCreation(this),3000);
		List<SWTBotGefEditPart> selectedEditPart = this.getSWTBotGefViewer().selectedEditParts();
		SWTBotGefEditPart swtBotGefEditPart = null;
		if(!selectedEditPart.isEmpty()) {
			swtBotGefEditPart = selectedEditPart.get(0);
		}
		if(name != null) {
			switch(mode) {
			case BY_DIRECT_EDIT:
				swtBotGefEditPart.activateDirectEdit();
				this.directEditType(name);
				break;
			case BY_PROPERTIES:
			case DEFAULT:
			default:
				SWTBotPapyrusHelper.changeCurrentElementName(name,swtBotGefEditPart);
				break;
			}
		}
		return swtBotGefEditPart;
	}