case AbstractViewEvent.SHOWTREEVIEW:
// visibility of elements tree panel
editor.getEditorPanel().setTreeviewPanelVisible(!editor.getEditorPanel().isTreeviewPanelVisible());
break;
case AbstractViewEvent.PRESS:
editor.scaleNet(0.5);
break;
case AbstractViewEvent.STRETCH:
editor.scaleNet(2);
break;
case AbstractViewEvent.ROTATEVIEW: