angular2
Version:
Angular 2 - a web framework for modern web apps
135 lines • 16.9 kB
JavaScript
;"use strict";
var lang_1 = require('angular2/src/facade/lang');
var promise_1 = require('angular2/src/facade/promise');
var async_1 = require('angular2/src/facade/async');
var collection_1 = require('angular2/src/facade/collection');
var core_1 = require('angular2/core');
/**
* Providers for validators to be used for {@link Control}s in a form.
*
* Provide this using `multi: true` to add validators.
*
* ### Example
*
* {@example core/forms/ts/ng_validators/ng_validators.ts region='ng_validators'}
*/
exports.NG_VALIDATORS = lang_1.CONST_EXPR(new core_1.OpaqueToken("NgValidators"));
/**
* Providers for asynchronous validators to be used for {@link Control}s
* in a form.
*
* Provide this using `multi: true` to add validators.
*
* See {@link NG_VALIDATORS} for more details.
*/
exports.NG_ASYNC_VALIDATORS = lang_1.CONST_EXPR(new core_1.OpaqueToken("NgAsyncValidators"));
/**
* Provides a set of validators used by form controls.
*
* A validator is a function that processes a {@link Control} or collection of
* controls and returns a map of errors. A null map means that validation has passed.
*
* ### Example
*
* ```typescript
* var loginControl = new Control("", Validators.required)
* ```
*/
var Validators = (function () {
function Validators() {
}
/**
* Validator that requires controls to have a non-empty value.
*/
Validators.required = function (control) {
return lang_1.isBlank(control.value) || (lang_1.isString(control.value) && control.value == "") ?
{ "required": true } :
null;
};
/**
* Validator that requires controls to have a value of a minimum length.
*/
Validators.minLength = function (minLength) {
return function (control) {
if (lang_1.isPresent(Validators.required(control)))
return null;
var v = control.value;
return v.length < minLength ?
{ "minlength": { "requiredLength": minLength, "actualLength": v.length } } :
null;
};
};
/**
* Validator that requires controls to have a value of a maximum length.
*/
Validators.maxLength = function (maxLength) {
return function (control) {
if (lang_1.isPresent(Validators.required(control)))
return null;
var v = control.value;
return v.length > maxLength ?
{ "maxlength": { "requiredLength": maxLength, "actualLength": v.length } } :
null;
};
};
/**
* Validator that requires a control to match a regex to its value.
*/
Validators.pattern = function (pattern) {
return function (control) {
if (lang_1.isPresent(Validators.required(control)))
return null;
var regex = new RegExp("^" + pattern + "$");
var v = control.value;
return regex.test(v) ? null :
{ "pattern": { "requiredPattern": "^" + pattern + "$", "actualValue": v } };
};
};
/**
* No-op validator.
*/
Validators.nullValidator = function (c) { return null; };
/**
* Compose multiple validators into a single function that returns the union
* of the individual error maps.
*/
Validators.compose = function (validators) {
if (lang_1.isBlank(validators))
return null;
var presentValidators = validators.filter(lang_1.isPresent);
if (presentValidators.length == 0)
return null;
return function (control) {
return _mergeErrors(_executeValidators(control, presentValidators));
};
};
Validators.composeAsync = function (validators) {
if (lang_1.isBlank(validators))
return null;
var presentValidators = validators.filter(lang_1.isPresent);
if (presentValidators.length == 0)
return null;
return function (control) {
var promises = _executeAsyncValidators(control, presentValidators).map(_convertToPromise);
return promise_1.PromiseWrapper.all(promises).then(_mergeErrors);
};
};
return Validators;
}());
exports.Validators = Validators;
function _convertToPromise(obj) {
return promise_1.PromiseWrapper.isPromise(obj) ? obj : async_1.ObservableWrapper.toPromise(obj);
}
function _executeValidators(control, validators) {
return validators.map(function (v) { return v(control); });
}
function _executeAsyncValidators(control, validators) {
return validators.map(function (v) { return v(control); });
}
function _mergeErrors(arrayOfErrors) {
var res = arrayOfErrors.reduce(function (res, errors) {
return lang_1.isPresent(errors) ? collection_1.StringMapWrapper.merge(res, errors) : res;
}, {});
return collection_1.StringMapWrapper.isEmpty(res) ? null : res;
}
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A null map means that validation has passed.\n *\n * ### Example\n *\n * ```typescript\n * var loginControl = new Control(\"\", Validators.required)\n * ```\n */\nexport class Validators {\n  /**\n   * Validator that requires controls to have a non-empty value.\n   */\n  static required(control: modelModule.AbstractControl): {[key: string]: boolean} {\n    return isBlank(control.value) || (isString(control.value) && control.value == \"\") ?\n               {\"required\": true} :\n               null;\n  }\n\n  /**\n   * Validator that requires controls to have a value of a minimum length.\n   */\n  static minLength(minLength: number): ValidatorFn {\n    return (control: modelModule.AbstractControl): {[key: string]: any} => {\n      if (isPresent(Validators.required(control))) return null;\n      var v: string = control.value;\n      return v.length < minLength ?\n                 {\"minlength\": {\"requiredLength\": minLength, \"actualLength\": v.length}} :\n                 null;\n    };\n  }\n\n  /**\n   * Validator that requires controls to have a value of a maximum length.\n   */\n  static maxLength(maxLength: number): ValidatorFn {\n    return (control: modelModule.AbstractControl): {[key: string]: any} => {\n      if (isPresent(Validators.required(control))) return null;\n      var v: string = control.value;\n      return v.length > maxLength ?\n                 {\"maxlength\": {\"requiredLength\": maxLength, \"actualLength\": v.length}} :\n                 null;\n    };\n  }\n\n  /**\n   * Validator that requires a control to match a regex to its value.\n   */\n  static pattern(pattern: string): ValidatorFn {\n    return (control: modelModule.AbstractControl): {[key: string]: any} => {\n      if (isPresent(Validators.required(control))) return null;\n      let regex = new RegExp(`^${pattern}$`);\n      let v: string = control.value;\n      return regex.test(v) ? null :\n                             {\"pattern\": {\"requiredPattern\": `^${pattern}$`, \"actualValue\": v}};\n    };\n  }\n\n  /**\n   * No-op validator.\n   */\n  static nullValidator(c: modelModule.AbstractControl): {[key: string]: boolean} { return null; }\n\n  /**\n   * Compose multiple validators into a single function that returns the union\n   * of the individual error maps.\n   */\n  static compose(validators: ValidatorFn[]): ValidatorFn {\n    if (isBlank(validators)) return null;\n    var presentValidators = validators.filter(isPresent);\n    if (presentValidators.length == 0) return null;\n\n    return function(control: modelModule.AbstractControl) {\n      return _mergeErrors(_executeValidators(control, presentValidators));\n    };\n  }\n\n  static composeAsync(validators: AsyncValidatorFn[]): AsyncValidatorFn {\n    if (isBlank(validators)) return null;\n    var presentValidators = validators.filter(isPresent);\n    if (presentValidators.length == 0) return null;\n\n    return function(control: modelModule.AbstractControl) {\n      let promises = _executeAsyncValidators(control, presentValidators).map(_convertToPromise);\n      return PromiseWrapper.all(promises).then(_mergeErrors);\n    };\n  }\n}\n\nfunction _convertToPromise(obj: any): any {\n  return PromiseWrapper.isPromise(obj) ? obj : ObservableWrapper.toPromise(obj);\n}\n\nfunction _executeValidators(control: modelModule.AbstractControl,\n                            validators: ValidatorFn[]): any[] {\n  return validators.map(v => v(control));\n}\n\nfunction _executeAsyncValidators(control: modelModule.AbstractControl,\n                                 validators: AsyncValidatorFn[]): any[] {\n  return validators.map(v => v(control));\n}\n\nfunction _mergeErrors(arrayOfErrors: any[]): {[key: string]: any} {\n  var res: {[key: string]: any} =\n      arrayOfErrors.reduce((res: {[key: string]: any}, errors: {[key: string]: any}) => {\n        return isPresent(errors) ? StringMapWrapper.merge(res, errors) : res;\n      }, {});\n  return StringMapWrapper.isEmpty(res) ? null : res;\n}\n"]}