HYTOS

        if event.key() == Qt.Key_Delete:

            items = self.mainWindow.graphicsView.scene.selectedItems()

            selectedIndexes = self.selectedIndexes()

                items[0].owner = None

                self.show_item_property(items[0])

            elif len(items) == 1 and len(selectedIndexes) == 1 and type(items[0]) is not QEngineeringLineItem and type(items[0]) is not QEngineeringSpecBreakItem and self.item(selectedIndexes[0].row(), 0).text().find('CONN') is not 0:

                if selectedIndexes[0].column() == 3:

                    items[0].removeSelfAttr(attributeStr)

                    self.mainWindow.refreshResultPropertyTableWidget()

            elif len(items) == 1 and len(selectedIndexes) == 1 and (type(items[0]) is QEngineeringLineItem or issubclass(type(items[0]), SymbolSvgItem)):

                                if sceneConnector.connectedItem is not None and items[0].uid == sceneConnector.connectedItem.uid:

                                    sceneConnector.connectedItem = None

            elif len(items) == 1 and len(selectedIndexes) == 1 and type(items[0]) is QEngineeringSpecBreakItem:

                if selectedIndexes[0].column() == 3 and (keyCell.text() == 'UpStream' or keyCell.text() == 'DownStream'):

                    for attr in items[0].attrs.keys():

                        if attr.Attribute == keyCell.text():

                    HighlightCommand(self.graphicsView).execute(errorItem)

        except Exception as ex:

            pass

    def onValidation(self):

        """

            return None

        return node 

    def end_break(self):

        '''

            @brief  end break check

            @author euisung

            @date   2019.05.07

            @history    2019.05.19  euisung    can cover at both end that contact other line's middle

        '''

        from EngineeringLineItem import QEngineeringLineItem

        from SymbolSvgItem import SymbolSvgItem