| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| """Contains the logic to create cohesive forms on the explore view""" |
| import json |
| import os |
| from typing import Any, Optional |
| |
| from flask_appbuilder.fieldwidgets import BS3TextFieldWidget |
| from flask_babel import gettext as _ |
| from wtforms import Field, ValidationError |
| |
| |
| class JsonListField(Field): |
| widget = BS3TextFieldWidget() |
| data: list[str] = [] |
| |
| def _value(self) -> str: |
| return json.dumps(self.data) |
| |
| def process_formdata(self, valuelist: list[str]) -> None: |
| if valuelist and valuelist[0]: |
| self.data = json.loads(valuelist[0]) |
| else: |
| self.data = [] |
| |
| |
| class CommaSeparatedListField(Field): |
| widget = BS3TextFieldWidget() |
| data: list[str] = [] |
| |
| def _value(self) -> str: |
| if self.data: |
| return ", ".join(self.data) |
| |
| return "" |
| |
| def process_formdata(self, valuelist: list[str]) -> None: |
| if valuelist: |
| self.data = [x.strip() for x in valuelist[0].split(",")] |
| else: |
| self.data = [] |
| |
| |
| class FileSizeLimit: # pylint: disable=too-few-public-methods |
| """Imposes an optional maximum filesize limit for uploaded files""" |
| |
| def __init__(self, max_size: Optional[int]): |
| self.max_size = max_size |
| |
| def __call__(self, form: dict[str, Any], field: Any) -> None: |
| if self.max_size is None: |
| return |
| |
| field.data.flush() |
| size = os.fstat(field.data.fileno()).st_size |
| if size > self.max_size: |
| raise ValidationError( |
| _( |
| "File size must be less than or equal to %(max_size)s bytes", |
| max_size=self.max_size, |
| ) |
| ) |
| |
| |
| def filter_not_empty_values(values: Optional[list[Any]]) -> Optional[list[Any]]: |
| """Returns a list of non empty values or None""" |
| if not values: |
| return None |
| data = [value for value in values if value] |
| if not data: |
| return None |
| return data |