HYTOS

        self.symbols.clear()

        self.lineNos.clear()

        self.texts.clear()

        self.unknowns.clear()

        self.allItems.clear()

        self.lineIndicators.clear()

        if trim:

            self.tracerLineNos.clear()

    '''

        @brief      clear

        worker.displayMessage.emit('Initiating...')

        docdata = AppDocData.instance()

        symbols = []

        lineNos = []

        spec_breaks = []

        lineIndicator = []

            elif type(item) is QEngineeringLineItem:

                #matches = [vendor_package for vendor_package in vendor_packages if vendor_package.includes(item)]

                #if not matches: lines.append(item)

            elif type(item) is QEngineeringUnknownItem and item.lineIndicator != 'False':

                lineIndicator.append(item)

            elif issubclass(type(item), QEngineeringTextItem):

            self.treeWidgetDrawingList.root.setCheckState(0, Qt.Unchecked)

            files = app_doc_data.getDrawingFileList()

            count = 0

            for file in files:

                x = [drawing for drawing in drawings if drawing.name == file]

                if not x or not x[0].UID:

                item.setData(Qt.UserRole, 0, drawing)

                count += 1

            self.treeWidgetDrawingList.root.setText(0, self.tr('P&ID Drawings') +

                                                    f"({self.treeWidgetDrawingList.root.childCount()})")

            app_doc_data.clearItemList(False)

            items = self.graphicsView.scene.items()

            for item in items:

                if issubclass(type(item), QEngineeringAbstractItem):

                    app_doc_data.allItems.append(item)

                    if issubclass(type(item), QEngineeringTextItem):

                        app_doc_data.texts.append(item)

            itemTypes = []

            for item in items:

                typeExist = False

            item.setFlags(item.flags() | Qt.ItemIsEditable)

            if messageType == MessageType.Error:

                item.setBackground(Qt.red)

            self.listWidgetLog.insertItem(0, item)

        except Exception as ex:

            if type(item) is QEngineeringLineNoTextItem and item in app_doc_data.tracerLineNos:

                app_doc_data.tracerLineNos.pop(app_doc_data.tracerLineNos.index(item))

            matches = [_item for _item in self.graphicsView.scene.items() if type(_item) is QEngineeringLineNoTextItem]

            matches.extend([lineNo for lineNo in app_doc_data.tracerLineNos if

                            type(lineNo) is QEngineeringTrimLineNoTextItem])

            # connect flow item to line

            for line in lines:

                line.update_arrow()

            # for flowMark in [item for item in symbols if type(item) is QEngineeringFlowMarkItem]:

            #    for line in lines:

            #        if flowMark.owner is line:

            # connect flow item to line

            for line in lines:

                line.update_arrow()

            # for flowMark in [item for item in symbols if type(item) is QEngineeringFlowMarkItem]:

            #    for line in lines:

            #        if flowMark.owner is line:

        @date       18.04.23

        @history    humkyung 2018.06.30 apply font configuration

    '''

    def addTextItemToScene(self, scene):

        try:

            docData = AppDocData.instance()