superset TimeFormatterRegistry 源码
superset TimeFormatterRegistry 代码
文件路径：/superset-frontend/packages/superset-ui-core/src/time-format/TimeFormatterRegistry.ts
/**
* 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.
*/
import { RegistryWithDefaultKey, OverwritePolicy } from '../models';
import TimeFormats, { LOCAL_PREFIX } from './TimeFormats';
import createD3TimeFormatter from './factories/createD3TimeFormatter';
import TimeFormatter from './TimeFormatter';
export default class TimeFormatterRegistry extends RegistryWithDefaultKey<
TimeFormatter,
TimeFormatter
> {
constructor() {
super({
initialDefaultKey: TimeFormats.DATABASE_DATETIME,
name: 'TimeFormatter',
overwritePolicy: OverwritePolicy.WARN,
});
}
get(format?: string) {
const targetFormat = `${
format === null || typeof format === 'undefined' || format === ''
? this.defaultKey
: format
}`.trim();
if (this.has(targetFormat)) {
return super.get(targetFormat) as TimeFormatter;
}
// Create new formatter if does not exist
const useLocalTime = targetFormat.startsWith(LOCAL_PREFIX);
const formatString = targetFormat.replace(LOCAL_PREFIX, '');
const formatter = createD3TimeFormatter({ formatString, useLocalTime });
this.registerValue(targetFormat, formatter);
return formatter;
}
format(format: string | undefined, value: Date | null | undefined): string {
return this.get(format)(value);
}
}
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