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TypeConverterManager.ts
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TypeConverterManager.ts
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/*---------------------------------------------------------------------------------------------
* Copyright (c) Bentley Systems, Incorporated. All rights reserved.
* See LICENSE.md in the project root for license terms and full copyright notice.
*--------------------------------------------------------------------------------------------*/
/** @packageDocumentation
* @module TypeConverters
*/
import { StandardTypeNames } from "@itwin/appui-abstract";
import type { TypeConverter } from "./TypeConverter";
import { StringTypeConverter } from "./StringTypeConverter";
/**
* Manages Type Converters. Type Converters are registered with and obtained from the manager.
* @public
*/
export class TypeConverterManager {
private static _converters: { [index: string]: TypeConverter } = {};
private static _defaultTypeConverter: TypeConverter;
private static getFullConverterName(
typename: string,
converterName?: string
): string {
let fullConverterName = typename;
if (converterName) fullConverterName += `:${converterName}`;
return fullConverterName;
}
public static registerConverter(
typename: string,
converter: new () => TypeConverter,
converterName?: string
): void {
const fullConverterName = TypeConverterManager.getFullConverterName(
typename,
converterName
);
if (TypeConverterManager._converters.hasOwnProperty(fullConverterName)) {
const nameOfConverter =
TypeConverterManager._converters[fullConverterName].constructor.name;
throw Error(
`TypeConverterManager.registerConverter error: type '${typename}' already registered to '${nameOfConverter}'`
);
}
const instance = new converter();
TypeConverterManager._converters[fullConverterName] = instance;
}
public static unregisterConverter(
typename: string,
converterName?: string
): void {
const fullConverterName = TypeConverterManager.getFullConverterName(
typename,
converterName
);
// istanbul ignore else
if (TypeConverterManager._converters.hasOwnProperty(fullConverterName)) {
delete TypeConverterManager._converters[fullConverterName];
}
}
public static getConverter(
typename: string,
converterName?: string
): TypeConverter {
const fullConverterName = TypeConverterManager.getFullConverterName(
typename,
converterName
);
if (TypeConverterManager._converters.hasOwnProperty(fullConverterName))
return TypeConverterManager._converters[fullConverterName];
if (!TypeConverterManager._defaultTypeConverter) {
TypeConverterManager._defaultTypeConverter = new StringTypeConverter();
}
return TypeConverterManager._defaultTypeConverter;
}
}
// Register these here as this is also the default type register, we always want it to be registered
// and if moved to the StringTypeConverter it causes a dependency loop issue.
TypeConverterManager.registerConverter(
StandardTypeNames.Text,
StringTypeConverter
);
TypeConverterManager.registerConverter(
StandardTypeNames.String,
StringTypeConverter
);
TypeConverterManager.registerConverter(
StandardTypeNames.URL,
StringTypeConverter
);