angular-reactive-validation
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Reactive Forms validation shouldn't require the developer to write lots of HTML to show validation messages. This library makes it easy.
80 lines • 13.9 kB
JavaScript
/**
* @dynamic
*/
export class ValidatorDeclaration {
/**
* Wraps your own validator functions for use with the angular-reactive-validation library.
*
* @param validatorFn A function you want to wrap which can validate a control.
* @param resultKey The error key used for indicating an error result as returned from the ValidatorFn.
*/
static wrapNoArgumentValidator(validatorFn, resultKey) {
return (message) => (control) => ValidatorDeclaration.validateAndSetMessageIfInvalid(control, () => validatorFn, resultKey, message);
}
/**
* Wraps your own validator functions for use with the angular-reactive-validation library.
*
* @param validatorFactoryFn A function which accepts a single argument and returns a ValidatorFn.
* @param resultKey The error key used for indicating an error result as returned from the ValidatorFn.
*/
static wrapSingleArgumentValidator(validatorFactoryFn, resultKey) {
return (arg1, message) => (control) => {
const unwrappedArg1 = ValidatorDeclaration.unwrapArgument(arg1);
return ValidatorDeclaration.validateAndSetMessageIfInvalid(control, validatorFactoryFn, resultKey, message, unwrappedArg1);
};
}
/**
* Wraps your own validator functions for use with the angular-reactive-validation library.
*
* @param validatorFactoryFn A function which accepts two arguments and returns a ValidatorFn.
* @param resultKey The error key used for indicating an error result as returned from the ValidatorFn.
*/
static wrapTwoArgumentValidator(validatorFactoryFn, resultKey) {
return (arg1, arg2, message) => (control) => {
const unwrappedArg1 = ValidatorDeclaration.unwrapArgument(arg1);
const unwrappedArg2 = ValidatorDeclaration.unwrapArgument(arg2);
return ValidatorDeclaration.validateAndSetMessageIfInvalid(control, validatorFactoryFn, resultKey, message, unwrappedArg1, unwrappedArg2);
};
}
static unwrapArgument(arg) {
if (arg instanceof Function) {
arg = arg();
}
return arg;
}
static validateAndSetMessageIfInvalid(control,
// eslint-disable-next-line @typescript-eslint/no-shadow
validatorFactoryFn, resultKey,
// eslint-disable-next-line @typescript-eslint/no-shadow
message, ...args) {
const validationResult = ValidatorDeclaration.validate(control, validatorFactoryFn, ...args);
ValidatorDeclaration.setMessageIfInvalid(control, resultKey, validationResult, message, ...args);
return validationResult;
}
// eslint-disable-next-line @typescript-eslint/no-shadow
static validate(control, validatorFactoryFn, ...args) {
const wrappedValidatorFn = validatorFactoryFn(...args);
return wrappedValidatorFn(control);
}
static setMessageIfInvalid(control, resultKey,
// eslint-disable-next-line @typescript-eslint/no-shadow
validationResult, message, ...args) {
if (message) {
if (validationResult && validationResult[resultKey]) {
if (typeof message === 'function') {
message = message(...args);
}
// Not all validators set an object. Often they'll simply set a property to true.
// Here, we replace any non-object (or array) to be an object on which we can set a message.
if (!ValidatorDeclaration.isObject(validationResult[resultKey])) {
validationResult[resultKey] = {};
}
validationResult[resultKey]['message'] = message;
}
}
}
static isObject(arg) {
return arg !== null && typeof arg === 'object' && !Array.isArray(arg);
}
}
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{ ValidatorFn, ValidationErrors, AbstractControl } from '@angular/forms';\n\n/**\n * @dynamic\n */\nexport class ValidatorDeclaration {\n  /**\n   * Wraps your own validator functions for use with the angular-reactive-validation library.\n   *\n   * @param validatorFn A function you want to wrap which can validate a control.\n   * @param resultKey The error key used for indicating an error result as returned from the ValidatorFn.\n   */\n  static wrapNoArgumentValidator(validatorFn: ValidatorFn, resultKey: string):\n    (message?: string | (() => string)) => ValidatorFn {\n      return (message?: string | (() => string)): ValidatorFn => (control: AbstractControl): ValidationErrors | null =>\n      ValidatorDeclaration.validateAndSetMessageIfInvalid(control, () => validatorFn, resultKey, message);\n  }\n\n  /**\n   * Wraps your own validator functions for use with the angular-reactive-validation library.\n   *\n   * @param validatorFactoryFn A function which accepts a single argument and returns a ValidatorFn.\n   * @param resultKey The error key used for indicating an error result as returned from the ValidatorFn.\n   */\n  static wrapSingleArgumentValidator<TInput>(validatorFactoryFn: ((arg1: TInput) => ValidatorFn), resultKey: string):\n    (arg1: TInput | (() => TInput), message?: string | ((arg1: TInput) => string)) => ValidatorFn {\n\n      return (arg1: TInput | (() => TInput), message?: string | ((arg1: TInput) => string)): ValidatorFn =>\n      (control: AbstractControl): ValidationErrors | null => {\n          const unwrappedArg1 = ValidatorDeclaration.unwrapArgument(arg1);\n\n          return ValidatorDeclaration.validateAndSetMessageIfInvalid(control, validatorFactoryFn, resultKey, message, unwrappedArg1);\n        };\n  }\n\n  /**\n   * Wraps your own validator functions for use with the angular-reactive-validation library.\n   *\n   * @param validatorFactoryFn A function which accepts two arguments and returns a ValidatorFn.\n   * @param resultKey The error key used for indicating an error result as returned from the ValidatorFn.\n   */\n  static wrapTwoArgumentValidator<TInput1, TInput2>(validatorFactoryFn: ((arg1: TInput1, arg2: TInput2) => ValidatorFn), resultKey: string):\n    (arg1: TInput1 | (() => TInput1), arg2: TInput2 | (() => TInput2), message?: string | ((arg1: TInput1, arg2: TInput2) => string)) =>\n    ValidatorFn {\n\n      return (arg1: TInput1 | (() => TInput1), arg2: TInput2 | (() => TInput2),\n        message?: string | ((arg1: TInput1, arg2: TInput2) => string)): ValidatorFn =>\n        (control: AbstractControl): ValidationErrors | null => {\n          const unwrappedArg1 = ValidatorDeclaration.unwrapArgument(arg1);\n          const unwrappedArg2 = ValidatorDeclaration.unwrapArgument(arg2);\n\n          return ValidatorDeclaration.validateAndSetMessageIfInvalid(control, validatorFactoryFn, resultKey, message,\n            unwrappedArg1, unwrappedArg2);\n        };\n  }\n\n  private static unwrapArgument<T>(arg: T | (() => T)): T {\n    if (arg instanceof Function) {\n      arg = arg();\n    }\n\n    return arg;\n  }\n\n  private static validateAndSetMessageIfInvalid(control: AbstractControl,\n    // eslint-disable-next-line @typescript-eslint/no-shadow\n    validatorFactoryFn: (...args: any[]) => ValidatorFn, resultKey: string,\n    // eslint-disable-next-line @typescript-eslint/no-shadow\n    message?: string | ((...args: any[]) => string), ...args: any[]): ValidationErrors | null {\n\n      const validationResult = ValidatorDeclaration.validate(control, validatorFactoryFn, ...args);\n      ValidatorDeclaration.setMessageIfInvalid(control, resultKey, validationResult, message, ...args);\n\n      return validationResult;\n  }\n\n  // eslint-disable-next-line @typescript-eslint/no-shadow\n  private static validate(control: AbstractControl, validatorFactoryFn: (...args: any[]) => ValidatorFn, ...args: any[]):\n    ValidationErrors | null {\n\n      const wrappedValidatorFn = validatorFactoryFn(...args);\n      return wrappedValidatorFn(control);\n  }\n\n  private static setMessageIfInvalid(control: AbstractControl, resultKey: string,\n    // eslint-disable-next-line @typescript-eslint/no-shadow\n    validationResult: ValidationErrors | null, message?: string | ((...args: any[]) => string), ...args: any[]) {\n    if (message) {\n      if (validationResult && validationResult[resultKey]) {\n        if (typeof message === 'function') {\n          message = message(...args);\n        }\n\n        // Not all validators set an object. Often they'll simply set a property to true.\n        // Here, we replace any non-object (or array) to be an object on which we can set a message.\n        if (!ValidatorDeclaration.isObject(validationResult[resultKey])) {\n          validationResult[resultKey] = {};\n        }\n\n        validationResult[resultKey]['message'] = message;\n      }\n    }\n  }\n\n  private static isObject(arg: any) {\n    return arg !== null && typeof arg === 'object' && !Array.isArray(arg);\n  }\n}\n"]}