def flags(self, index):
        """Return the item flags for index.

        Override QAbstractItemModel::flags.

        Return: The item flags, or Qt.NoItemFlags on error.
        """
        if not index.isValid():
            return Qt.NoItemFlags
        if index.parent().isValid():
            # item
            return (Qt.ItemIsEnabled | Qt.ItemIsSelectable |
                    Qt.ItemNeverHasChildren)
        else:
            # category
            return Qt.NoItemFlags 

def add_parent_folder(self):
        row_idx = self.rowCount()
        self.insertRow(row_idx)
        items = []
        p = Pixmap(":/icons/images/material/arrow_upward.svg")
        p.replace_color(QColor(0, 0, 0), QColor(0x99, 0x99, 0x99))
        items.append(CustomTableItem(QIcon(p), ""))
        items.append(CustomTableItem(_("TEXT_FILE_TREE_PARENT_FOLDER")))
        items.append(CustomTableItem())
        items.append(CustomTableItem())
        items.append(CustomTableItem())

        for col, item in zip(Column, items):
            item.setData(NAME_DATA_INDEX, "")
            item.setData(TYPE_DATA_INDEX, FileType.ParentFolder)
            item.setData(UUID_DATA_INDEX, None)
            item.setFlags(Qt.ItemIsEnabled)
            self.setItem(row_idx, col, item) 

def add_parent_workspace(self):
        row_idx = self.rowCount()
        self.insertRow(row_idx)
        items = []
        p = Pixmap(":/icons/images/material/arrow_upward.svg")
        p.replace_color(QColor(0, 0, 0), QColor(0x99, 0x99, 0x99))
        items.append(CustomTableItem(QIcon(p), ""))
        items.append(CustomTableItem(_("TEXT_FILE_TREE_PARENT_WORKSPACE")))
        items.append(CustomTableItem())
        items.append(CustomTableItem())
        items.append(CustomTableItem())

        for col, item in zip(Column, items):
            item.setData(NAME_DATA_INDEX, "")
            item.setData(TYPE_DATA_INDEX, FileType.ParentWorkspace)
            item.setData(UUID_DATA_INDEX, None)
            item.setFlags(Qt.ItemIsEnabled)
            self.setItem(row_idx, col, item) 

def load_endpoints(self):
        self.choose_endpoint.endpoints.clear()
        
        for name in listdir(str(BASE_PATH / 'endpoints')):
            if name.endswith('.json'):
                item = QListWidgetItem(name.split('.json')[0], self.choose_endpoint.endpoints)
                item.setFlags(item.flags() & ~Qt.ItemIsEnabled)
                
                pb_msg_to_endpoints = defaultdict(list)
                with open(str(BASE_PATH / 'endpoints' / name)) as fd:
                    for endpoint in load(fd, object_pairs_hook=OrderedDict):
                        pb_msg_to_endpoints[endpoint['request']['proto_msg'].split('.')[-1]].append(endpoint)
                
                for pb_msg, endpoints in pb_msg_to_endpoints.items():
                    item = QListWidgetItem(' ' * 4 + pb_msg, self.choose_endpoint.endpoints)
                    item.setFlags(item.flags() & ~Qt.ItemIsEnabled)
                    
                    for endpoint in endpoints:
                        path_and_qs = '/' + endpoint['request']['url'].split('/', 3).pop()
                        item = QListWidgetItem(' ' * 8 + path_and_qs, self.choose_endpoint.endpoints)
                        item.setData(Qt.UserRole, endpoint)
        
        self.set_view(self.choose_endpoint) 

def pb_clone_behavior_clicked(self):
        """
        clone the selected configuration
        """
        if not self.twBehaviors.selectedIndexes():
            QMessageBox.about(self, programName, "First select a behavior")
        else:
            self.twBehaviors.setRowCount(self.twBehaviors.rowCount() + 1)

            row = self.twBehaviors.selectedIndexes()[0].row()
            for field in behavioursFields:
                item = QTableWidgetItem(self.twBehaviors.item(row, behavioursFields[field]))
                self.twBehaviors.setItem(self.twBehaviors.rowCount() - 1, behavioursFields[field], item)
                if field in [TYPE, "category", "excluded", "coding map", "modifiers"]:
                    item.setFlags(Qt.ItemIsEnabled)
                    item.setBackground(QColor(230, 230, 230)) 

def pbAddBehavior_clicked(self):
        """
        add new behavior to ethogram
        """

        try:
            # Add behavior to table
            self.twBehaviors.setRowCount(self.twBehaviors.rowCount() + 1)
            for field_type in behavioursFields:
                item = QTableWidgetItem()
                if field_type == TYPE:
                    item.setText("Point event")

                if field_type in [TYPE, "category", "excluded", "coding map", "modifiers"]:
                    item.setFlags(Qt.ItemIsEnabled)
                    item.setBackground(QColor(230, 230, 230))
                self.twBehaviors.setItem(self.twBehaviors.rowCount() - 1, behavioursFields[field_type], item)
        except Exception:
            logging.critical(f"Error:<br><b>{sys.exc_info()[1]}</b>")
            dialog.error_message("adding a new behavior", sys.exc_info()) 

def flags(self, index: QModelIndex):
        if not index.isValid():
            return None

        j = index.column()
        device = self.get_device_at(index.row())
        if j == 0 and not device.has_native_backend and not device.has_gnuradio_backend:
            return Qt.NoItemFlags

        if j in [1, 2, 3] and not device.is_enabled:
            return Qt.NoItemFlags

        if j == 2 and not device.has_native_backend:
            return Qt.NoItemFlags

        if j == 3 and not device.has_gnuradio_backend:
            return Qt.NoItemFlags

        flags = Qt.ItemIsEnabled

        if j in [0, 2, 3]:
            flags |= Qt.ItemIsUserCheckable

        return flags 

def display_utxos(self):
        def item(value):
            item = QTableWidgetItem(value)
            item.setTextAlignment(Qt.AlignCenter)
            item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable)
            return item

        self.tableW.setRowCount(len(self.utxos))
        for row, utxo in enumerate(self.utxos):
            pivxAmount = round(int(utxo.get('satoshis', 0))/1e8, 8)
            self.tableW.setItem(row, 0, item(str(pivxAmount)))
            self.tableW.setItem(row, 1, item(str(utxo['confirmations'])))
            self.tableW.setItem(row, 2, item(utxo.get('txid', None)))
            self.tableW.setItem(row, 3, item(str(utxo.get('vout', None))))

        if len(self.utxos):
            self.tableW.resizeColumnsToContents()
            self.lblMessage.setVisible(False)
            self.tableW.horizontalHeader().setSectionResizeMode(2, QHeaderView.Stretch)

        else:
            self.lblMessage.setText('<b style="color:purple">No UTXO found for current address.\nEnter tx manually</b>')
            self.lblMessage.setVisible(True) 

def _update_tree(self, conf, value):
        """Update the block tree"""
        self._block_tree.clear()
        for block in self._helper.cf.log.log_blocks:
            item = QtWidgets.QTreeWidgetItem()
            item.setFlags(Qt.ItemIsEnabled |
                          Qt.ItemIsSelectable)
            item.setData(0, Qt.DisplayRole, block.id)
            item.setData(1, Qt.EditRole, block.name)
            item.setData(2, Qt.DisplayRole, (block.period_in_ms))
            item.setData(3, Qt.DisplayRole, block.added)
            item.setData(4, Qt.EditRole, block.started)
            item.setData(5, Qt.EditRole, block.err_no)
            for var in block.variables:
                subItem = QtWidgets.QTreeWidgetItem()
                subItem.setFlags(Qt.ItemIsEnabled |
                                 Qt.ItemIsSelectable)
                subItem.setData(6, Qt.EditRole, var.name)
                item.addChild(subItem)

            self._block_tree.addTopLevelItem(item)
            self._block_tree.expandItem(item) 

def fill_tableWidget(self):
        ''' Fill table widget with data. '''

        numRows = self.ui.tableWidget.rowCount()
        for row in range(0, numRows):
            self.ui.tableWidget.removeRow(0)
        self.ui.tableWidget.setColumnCount(len(self.fields))
        for c, field in enumerate(self.fields):
            item = QtWidgets.QTableWidgetItem(field + "\n" + self.fields_type[c] + "\n")
            self.ui.tableWidget.setHorizontalHeaderItem(c, item)
        self.ui.tableWidget.setRowCount(len(self.data))
        for row in range(0, len(self.data)):
            for col in range(0, len(self.fields)):
                value = str(self.data[row][col])
                item = QtWidgets.QTableWidgetItem(value)
                item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled)  # not editatble
                self.ui.tableWidget.setItem(row, col, item)
        self.ui.tableWidget.resizeColumnsToContents()
        for col in range(0, self.ui.tableWidget.columnCount()):
            if self.ui.tableWidget.columnWidth(col) > 200:
                self.ui.tableWidget.setColumnWidth(col, 200) 

def flags(self, index):
        if not index.isValid():
            return 0

        if index.column() == 0:
            return Qt.ItemIsEnabled | Qt.ItemIsSelectable

        return Qt.ItemIsEditable | Qt.ItemIsEnabled | Qt.ItemIsSelectable 

def flags(self, index):
        flags = QAbstractTableModel.flags(self, index)
        if not index.isValid():
            return flags
        prop = self.getProperty(index)
        if prop is None:
            return flags
        flags |= Qt.ItemIsEnabled
        flags |= Qt.ItemIsSelectable
        mode = prop.get('mode', "Read/Write")
        if "Write" in mode:
            flags |= Qt.ItemIsEditable
        return flags 

def flags(self, index):
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable 

def flags(self, index):
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsEditable 

def flags(self, index):
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsEditable 

def flags(self, index):
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsEditable 

def flags(self, index):
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsEditable 

def __InitFieldItem(self, parent, item):
        treeItem = QTreeWidgetItem(parent)
        treeItem.setText(0, item)
        treeItem.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled | Qt.ItemIsSelectable)
        treeItem.setCheckState(0, Qt.Unchecked)

        return treeItem 

def flags(self, index):
        if not index.isValid():
            return Qt.NoItemFlags

        return Qt.ItemIsEnabled | Qt.ItemIsSelectable 

def flags(self, index):
        return Qt.ItemIsEditable | Qt.ItemIsEnabled | Qt.ItemIsSelectable 

def update_table(self, emuchunks):
            '''
                This function updates the table with new code objects received from the packager
                at the end of a "ripping" process.
            '''
            if (not self.qtAvailable):
                return
            self._table.setRowCount(len(emuchunks))
            self._table.emuchunks = emuchunks
            row = 0
            for chunkName in emuchunks:
                nameField =  QtWidgets.QTableWidgetItem(chunkName)
                nameField.setFlags(Qt.ItemIsEnabled)
    
                startAddr = QtWidgets.QTableWidgetItem('0x%.8x' % emuchunks[chunkName].startaddr)
                startAddr.setFlags(Qt.ItemIsEnabled)
    
                endAddr = QtWidgets.QTableWidgetItem('0x%.8x' % (int(emuchunks[chunkName].startaddr) + int(emuchunks[chunkName].codelen)))
                endAddr.setFlags(Qt.ItemIsEnabled)
                
                self._table.setItem(row, 0, nameField)
                self._table.setItem(row, 1, startAddr)
                self._table.setItem(row, 2, endAddr)
                row += 1
            
            self._core.show()
            self._core.selectTab(self)
            self.show()
    
    
        ### Convenience wrappers for some frequently used things 

def flags(self, index):
        if not index.isValid():
            return Qt.NoItemFlags

        return Qt.ItemIsEnabled | Qt.ItemIsUserCheckable 

def initCategories(self):
        generalButton = QListWidgetItem(self.categories)
        generalButton.setIcon(QIcon(':/images/settings-general.png'))
        generalButton.setText('General')
        generalButton.setToolTip('General settings')
        generalButton.setTextAlignment(Qt.AlignHCenter)
        generalButton.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled)
        videoButton = QListWidgetItem(self.categories)
        videoButton.setIcon(QIcon(':/images/settings-video.png'))
        videoButton.setText('Video')
        videoButton.setToolTip('Video settings')
        videoButton.setTextAlignment(Qt.AlignHCenter)
        videoButton.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled)
        themeButton = QListWidgetItem(self.categories)
        themeButton.setIcon(QIcon(':/images/settings-theme.png'))
        themeButton.setText('Theme')
        themeButton.setToolTip('Theme settings')
        themeButton.setTextAlignment(Qt.AlignHCenter)
        themeButton.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled)
        ffmpegButton = QListWidgetItem(self.categories)
        ffmpegButton.setIcon(QIcon(':/images/settings-ffmpeg.png'))
        ffmpegButton.setText('Tools')
        ffmpegButton.setToolTip('Tools settings')
        ffmpegButton.setTextAlignment(Qt.AlignHCenter)
        ffmpegButton.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled)
        logsButton = QListWidgetItem(self.categories)
        logsButton.setIcon(QIcon(':/images/settings-logs.png'))
        logsButton.setText('Logs')
        logsButton.setToolTip('Logging settings')
        logsButton.setTextAlignment(Qt.AlignHCenter)
        logsButton.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled)
        self.categories.currentItemChanged.connect(self.changePage)
        self.categories.setCurrentRow(0)
        self.categories.setMaximumWidth(self.categories.sizeHintForColumn(0) + 2) 

def renderClips(self, cliptimes: list) -> int:
        self.clear()
        externalCount = 0
        for index, clip in enumerate(cliptimes):
            chapterName, endItem = '', ''
            if isinstance(clip[1], QTime):
                endItem = clip[1].toString(self.parent.timeformat)
                self.parent.totalRuntime += clip[0].msecsTo(clip[1])
            listitem = QListWidgetItem(self)
            listitem.setToolTip('Drag to reorder clips')
            if len(clip[3]):
                listitem.setToolTip(clip[3])
                externalCount += 1
            if self.parent.createChapters:
                chapterName = clip[4] if clip[4] is not None else 'Chapter {}'.format(index + 1)
            listitem.setStatusTip('Reorder clips with mouse drag & drop or right-click menu on the clip to be moved')
            listitem.setTextAlignment(Qt.AlignVCenter)
            listitem.setData(Qt.DecorationRole + 1, clip[2])
            listitem.setData(Qt.DisplayRole + 1, clip[0].toString(self.parent.timeformat))
            listitem.setData(Qt.UserRole + 1, endItem)
            listitem.setData(Qt.UserRole + 2, clip[3])
            listitem.setData(Qt.UserRole + 3, chapterName)
            listitem.setFlags(Qt.ItemIsSelectable | Qt.ItemIsDragEnabled | Qt.ItemIsEnabled)
            self.addItem(listitem)
            if isinstance(clip[1], QTime) and not len(clip[3]):
                self.parent.seekSlider.addRegion(clip[0].msecsSinceStartOfDay(), clip[1].msecsSinceStartOfDay())
        return externalCount 

def dialog_helper_init(self):
        self.check_all_button.clicked.connect(self.handle_check_all_clicked)
        self.check_none_button.clicked.connect(self.handle_check_none_clicked)
        for attr in self.get_attrs():
            it = QListWidgetItem()
            it.setText(attr)
            it.setData(Qt.UserRole, attr)
            it.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
            it.setCheckState(
                Qt.Checked if self.is_default_attr(attr) else Qt.Unchecked)
            self.attr_list.addItem(it) 

def flags(self, index):
        if not index.isValid():
            return 0
        flags = Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsDropEnabled
        return flags 

def flags(self, index):
        if not index.isValid():
            return Qt.NoItemFlags

        return Qt.ItemIsEnabled | Qt.ItemIsSelectable 

def flags(self, index):
        base_flag = Qt.ItemIsEnabled | Qt.ItemIsSelectable
        if self.is_editable:
            return base_flag | Qt.ItemIsEditable
        else:
            return base_flag 

def flags(self, index):
        f = Qt.ItemIsEnabled | Qt.ItemIsSelectable
        if index.column() == 0:
            f = f | Qt.ItemIsUserCheckable | Qt.ItemIsEditable
        return f 

def flags(self, index):
        return Qt.ItemIsEnabled | Qt.ItemIsSelectable