blob: ce3d1c9a3ca76224d506cc95d650d50d5f0b0b65 [file] [log] [blame]
/**
* @license Angular v8.1.1
* (c) 2010-2019 Google LLC. https://angular.io/
* License: MIT
*/
import { AfterViewInit } from '@angular/core';
import { ElementRef } from '@angular/core';
import { EventEmitter } from '@angular/core';
import { InjectionToken } from '@angular/core';
import { Injector } from '@angular/core';
import { ModuleWithProviders } from '@angular/core';
import { Observable } from 'rxjs';
import { OnChanges } from '@angular/core';
import { OnDestroy } from '@angular/core';
import { OnInit } from '@angular/core';
import { Renderer2 } from '@angular/core';
import { SimpleChanges } from '@angular/core';
import { StaticProvider } from '@angular/core';
import { Type } from '@angular/core';
import { Version } from '@angular/core';
/**
* This is the base class for `FormControl`, `FormGroup`, and `FormArray`.
*
* It provides some of the shared behavior that all controls and groups of controls have, like
* running validators, calculating status, and resetting state. It also defines the properties
* that are shared between all sub-classes, like `value`, `valid`, and `dirty`. It shouldn't be
* instantiated directly.
*
* @see [Forms Guide](/guide/forms)
* @see [Reactive Forms Guide](/guide/reactive-forms)
* @see [Dynamic Forms Guide](/guide/dynamic-form)
*
* @publicApi
*/
export declare abstract class AbstractControl {
validator: ValidatorFn | null;
asyncValidator: AsyncValidatorFn | null;
private _parent;
private _asyncValidationSubscription;
/**
* The current value of the control.
*
* * For a `FormControl`, the current value.
* * For an enabled `FormGroup`, the values of enabled controls as an object
* with a key-value pair for each member of the group.
* * For a disabled `FormGroup`, the values of all controls as an object
* with a key-value pair for each member of the group.
* * For a `FormArray`, the values of enabled controls as an array.
*
*/
readonly value: any;
/**
* Initialize the AbstractControl instance.
*
* @param validator The function that determines the synchronous validity of this control.
* @param asyncValidator The function that determines the asynchronous validity of this
* control.
*/
constructor(validator: ValidatorFn | null, asyncValidator: AsyncValidatorFn | null);
/**
* The parent control.
*/
readonly parent: FormGroup | FormArray;
/**
* The validation status of the control. There are four possible
* validation status values:
*
* * **VALID**: This control has passed all validation checks.
* * **INVALID**: This control has failed at least one validation check.
* * **PENDING**: This control is in the midst of conducting a validation check.
* * **DISABLED**: This control is exempt from validation checks.
*
* These status values are mutually exclusive, so a control cannot be
* both valid AND invalid or invalid AND disabled.
*/
readonly status: string;
/**
* A control is `valid` when its `status` is `VALID`.
*
* @see {@link AbstractControl.status}
*
* @returns True if the control has passed all of its validation tests,
* false otherwise.
*/
readonly valid: boolean;
/**
* A control is `invalid` when its `status` is `INVALID`.
*
* @see {@link AbstractControl.status}
*
* @returns True if this control has failed one or more of its validation checks,
* false otherwise.
*/
readonly invalid: boolean;
/**
* A control is `pending` when its `status` is `PENDING`.
*
* @see {@link AbstractControl.status}
*
* @returns True if this control is in the process of conducting a validation check,
* false otherwise.
*/
readonly pending: boolean;
/**
* A control is `disabled` when its `status` is `DISABLED`.
*
* Disabled controls are exempt from validation checks and
* are not included in the aggregate value of their ancestor
* controls.
*
* @see {@link AbstractControl.status}
*
* @returns True if the control is disabled, false otherwise.
*/
readonly disabled: boolean;
/**
* A control is `enabled` as long as its `status` is not `DISABLED`.
*
* @returns True if the control has any status other than 'DISABLED',
* false if the status is 'DISABLED'.
*
* @see {@link AbstractControl.status}
*
*/
readonly enabled: boolean;
/**
* An object containing any errors generated by failing validation,
* or null if there are no errors.
*/
readonly errors: ValidationErrors | null;
/**
* A control is `pristine` if the user has not yet changed
* the value in the UI.
*
* @returns True if the user has not yet changed the value in the UI; compare `dirty`.
* Programmatic changes to a control's value do not mark it dirty.
*/
readonly pristine: boolean;
/**
* A control is `dirty` if the user has changed the value
* in the UI.
*
* @returns True if the user has changed the value of this control in the UI; compare `pristine`.
* Programmatic changes to a control's value do not mark it dirty.
*/
readonly dirty: boolean;
/**
* True if the control is marked as `touched`.
*
* A control is marked `touched` once the user has triggered
* a `blur` event on it.
*/
readonly touched: boolean;
/**
* True if the control has not been marked as touched
*
* A control is `untouched` if the user has not yet triggered
* a `blur` event on it.
*/
readonly untouched: boolean;
/**
* A multicasting observable that emits an event every time the value of the control changes, in
* the UI or programmatically.
*/
readonly valueChanges: Observable<any>;
/**
* A multicasting observable that emits an event every time the validation `status` of the control
* recalculates.
*
* @see {@link AbstractControl.status}
*
*/
readonly statusChanges: Observable<any>;
/**
* Reports the update strategy of the `AbstractControl` (meaning
* the event on which the control updates itself).
* Possible values: `'change'` | `'blur'` | `'submit'`
* Default value: `'change'`
*/
readonly updateOn: FormHooks;
/**
* Sets the synchronous validators that are active on this control. Calling
* this overwrites any existing sync validators.
*/
setValidators(newValidator: ValidatorFn | ValidatorFn[] | null): void;
/**
* Sets the async validators that are active on this control. Calling this
* overwrites any existing async validators.
*/
setAsyncValidators(newValidator: AsyncValidatorFn | AsyncValidatorFn[] | null): void;
/**
* Empties out the sync validator list.
*/
clearValidators(): void;
/**
* Empties out the async validator list.
*/
clearAsyncValidators(): void;
/**
* Marks the control as `touched`. A control is touched by focus and
* blur events that do not change the value.
*
* @see `markAsUntouched()`
* @see `markAsDirty()`
* @see `markAsPristine()`
*
* @param opts Configuration options that determine how the control propagates changes
* and emits events events after marking is applied.
* * `onlySelf`: When true, mark only this control. When false or not supplied,
* marks all direct ancestors. Default is false.
*/
markAsTouched(opts?: {
onlySelf?: boolean;
}): void;
/**
* Marks the control and all its descendant controls as `touched`.
* @see `markAsTouched()`
*/
markAllAsTouched(): void;
/**
* Marks the control as `untouched`.
*
* If the control has any children, also marks all children as `untouched`
* and recalculates the `touched` status of all parent controls.
*
* @see `markAsTouched()`
* @see `markAsDirty()`
* @see `markAsPristine()`
*
* @param opts Configuration options that determine how the control propagates changes
* and emits events after the marking is applied.
* * `onlySelf`: When true, mark only this control. When false or not supplied,
* marks all direct ancestors. Default is false.
*/
markAsUntouched(opts?: {
onlySelf?: boolean;
}): void;
/**
* Marks the control as `dirty`. A control becomes dirty when
* the control's value is changed through the UI; compare `markAsTouched`.
*
* @see `markAsTouched()`
* @see `markAsUntouched()`
* @see `markAsPristine()`
*
* @param opts Configuration options that determine how the control propagates changes
* and emits events after marking is applied.
* * `onlySelf`: When true, mark only this control. When false or not supplied,
* marks all direct ancestors. Default is false.
*/
markAsDirty(opts?: {
onlySelf?: boolean;
}): void;
/**
* Marks the control as `pristine`.
*
* If the control has any children, marks all children as `pristine`,
* and recalculates the `pristine` status of all parent
* controls.
*
* @see `markAsTouched()`
* @see `markAsUntouched()`
* @see `markAsDirty()`
*
* @param opts Configuration options that determine how the control emits events after
* marking is applied.
* * `onlySelf`: When true, mark only this control. When false or not supplied,
* marks all direct ancestors. Default is false..
*/
markAsPristine(opts?: {
onlySelf?: boolean;
}): void;
/**
* Marks the control as `pending`.
*
* A control is pending while the control performs async validation.
*
* @see {@link AbstractControl.status}
*
* @param opts Configuration options that determine how the control propagates changes and
* emits events after marking is applied.
* * `onlySelf`: When true, mark only this control. When false or not supplied,
* marks all direct ancestors. Default is false..
* * `emitEvent`: When true or not supplied (the default), the `statusChanges`
* observable emits an event with the latest status the control is marked pending.
* When false, no events are emitted.
*
*/
markAsPending(opts?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
/**
* Disables the control. This means the control is exempt from validation checks and
* excluded from the aggregate value of any parent. Its status is `DISABLED`.
*
* If the control has children, all children are also disabled.
*
* @see {@link AbstractControl.status}
*
* @param opts Configuration options that determine how the control propagates
* changes and emits events after the control is disabled.
* * `onlySelf`: When true, mark only this control. When false or not supplied,
* marks all direct ancestors. Default is false..
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control is disabled.
* When false, no events are emitted.
*/
disable(opts?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
/**
* Enables the control. This means the control is included in validation checks and
* the aggregate value of its parent. Its status recalculates based on its value and
* its validators.
*
* By default, if the control has children, all children are enabled.
*
* @see {@link AbstractControl.status}
*
* @param opts Configure options that control how the control propagates changes and
* emits events when marked as untouched
* * `onlySelf`: When true, mark only this control. When false or not supplied,
* marks all direct ancestors. Default is false..
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control is enabled.
* When false, no events are emitted.
*/
enable(opts?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
private _updateAncestors;
/**
* @param parent Sets the parent of the control
*/
setParent(parent: FormGroup | FormArray): void;
/**
* Sets the value of the control. Abstract method (implemented in sub-classes).
*/
abstract setValue(value: any, options?: Object): void;
/**
* Patches the value of the control. Abstract method (implemented in sub-classes).
*/
abstract patchValue(value: any, options?: Object): void;
/**
* Resets the control. Abstract method (implemented in sub-classes).
*/
abstract reset(value?: any, options?: Object): void;
/**
* Recalculates the value and validation status of the control.
*
* By default, it also updates the value and validity of its ancestors.
*
* @param opts Configuration options determine how the control propagates changes and emits events
* after updates and validity checks are applied.
* * `onlySelf`: When true, only update this control. When false or not supplied,
* update all direct ancestors. Default is false..
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control is updated.
* When false, no events are emitted.
*/
updateValueAndValidity(opts?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
private _setInitialStatus;
private _runValidator;
private _runAsyncValidator;
private _cancelExistingSubscription;
/**
* Sets errors on a form control when running validations manually, rather than automatically.
*
* Calling `setErrors` also updates the validity of the parent control.
*
* @usageNotes
* ### Manually set the errors for a control
*
* ```
* const login = new FormControl('someLogin');
* login.setErrors({
* notUnique: true
* });
*
* expect(login.valid).toEqual(false);
* expect(login.errors).toEqual({ notUnique: true });
*
* login.setValue('someOtherLogin');
*
* expect(login.valid).toEqual(true);
* ```
*/
setErrors(errors: ValidationErrors | null, opts?: {
emitEvent?: boolean;
}): void;
/**
* Retrieves a child control given the control's name or path.
*
* @param path A dot-delimited string or array of string/number values that define the path to the
* control.
*
* @usageNotes
* ### Retrieve a nested control
*
* For example, to get a `name` control nested within a `person` sub-group:
*
* * `this.form.get('person.name');`
*
* -OR-
*
* * `this.form.get(['person', 'name']);`
*/
get(path: Array<string | number> | string): AbstractControl | null;
/**
* @description
* Reports error data for the control with the given path.
*
* @param errorCode The code of the error to check
* @param path A list of control names that designates how to move from the current control
* to the control that should be queried for errors.
*
* @usageNotes
* For example, for the following `FormGroup`:
*
* ```
* form = new FormGroup({
* address: new FormGroup({ street: new FormControl() })
* });
* ```
*
* The path to the 'street' control from the root form would be 'address' -> 'street'.
*
* It can be provided to this method in one of two formats:
*
* 1. An array of string control names, e.g. `['address', 'street']`
* 1. A period-delimited list of control names in one string, e.g. `'address.street'`
*
* @returns error data for that particular error. If the control or error is not present,
* null is returned.
*/
getError(errorCode: string, path?: Array<string | number> | string): any;
/**
* @description
* Reports whether the control with the given path has the error specified.
*
* @param errorCode The code of the error to check
* @param path A list of control names that designates how to move from the current control
* to the control that should be queried for errors.
*
* @usageNotes
* For example, for the following `FormGroup`:
*
* ```
* form = new FormGroup({
* address: new FormGroup({ street: new FormControl() })
* });
* ```
*
* The path to the 'street' control from the root form would be 'address' -> 'street'.
*
* It can be provided to this method in one of two formats:
*
* 1. An array of string control names, e.g. `['address', 'street']`
* 1. A period-delimited list of control names in one string, e.g. `'address.street'`
*
* If no path is given, this method checks for the error on the current control.
*
* @returns whether the given error is present in the control at the given path.
*
* If the control is not present, false is returned.
*/
hasError(errorCode: string, path?: Array<string | number> | string): boolean;
/**
* Retrieves the top-level ancestor of this control.
*/
readonly root: AbstractControl;
private _calculateStatus;
}
/**
* @description
* Base class for control directives.
*
* This class is only used internally in the `ReactiveFormsModule` and the `FormsModule`.
*
* @publicApi
*/
export declare abstract class AbstractControlDirective {
/**
* @description
* A reference to the underlying control.
*
* @returns the control that backs this directive. Most properties fall through to that instance.
*/
abstract readonly control: AbstractControl | null;
/**
* @description
* Reports the value of the control if it is present, otherwise null.
*/
readonly value: any;
/**
* @description
* Reports whether the control is valid. A control is considered valid if no
* validation errors exist with the current value.
* If the control is not present, null is returned.
*/
readonly valid: boolean | null;
/**
* @description
* Reports whether the control is invalid, meaning that an error exists in the input value.
* If the control is not present, null is returned.
*/
readonly invalid: boolean | null;
/**
* @description
* Reports whether a control is pending, meaning that that async validation is occurring and
* errors are not yet available for the input value. If the control is not present, null is
* returned.
*/
readonly pending: boolean | null;
/**
* @description
* Reports whether the control is disabled, meaning that the control is disabled
* in the UI and is exempt from validation checks and excluded from aggregate
* values of ancestor controls. If the control is not present, null is returned.
*/
readonly disabled: boolean | null;
/**
* @description
* Reports whether the control is enabled, meaning that the control is included in ancestor
* calculations of validity or value. If the control is not present, null is returned.
*/
readonly enabled: boolean | null;
/**
* @description
* Reports the control's validation errors. If the control is not present, null is returned.
*/
readonly errors: ValidationErrors | null;
/**
* @description
* Reports whether the control is pristine, meaning that the user has not yet changed
* the value in the UI. If the control is not present, null is returned.
*/
readonly pristine: boolean | null;
/**
* @description
* Reports whether the control is dirty, meaning that the user has changed
* the value in the UI. If the control is not present, null is returned.
*/
readonly dirty: boolean | null;
/**
* @description
* Reports whether the control is touched, meaning that the user has triggered
* a `blur` event on it. If the control is not present, null is returned.
*/
readonly touched: boolean | null;
/**
* @description
* Reports the validation status of the control. Possible values include:
* 'VALID', 'INVALID', 'DISABLED', and 'PENDING'.
* If the control is not present, null is returned.
*/
readonly status: string | null;
/**
* @description
* Reports whether the control is untouched, meaning that the user has not yet triggered
* a `blur` event on it. If the control is not present, null is returned.
*/
readonly untouched: boolean | null;
/**
* @description
* Returns a multicasting observable that emits a validation status whenever it is
* calculated for the control. If the control is not present, null is returned.
*/
readonly statusChanges: Observable<any> | null;
/**
* @description
* Returns a multicasting observable of value changes for the control that emits every time the
* value of the control changes in the UI or programmatically.
* If the control is not present, null is returned.
*/
readonly valueChanges: Observable<any> | null;
/**
* @description
* Returns an array that represents the path from the top-level form to this control.
* Each index is the string name of the control on that level.
*/
readonly path: string[] | null;
/**
* @description
* Resets the control with the provided value if the control is present.
*/
reset(value?: any): void;
/**
* @description
* Reports whether the control with the given path has the error specified.
*
* @param errorCode The code of the error to check
* @param path A list of control names that designates how to move from the current control
* to the control that should be queried for errors.
*
* @usageNotes
* For example, for the following `FormGroup`:
*
* ```
* form = new FormGroup({
* address: new FormGroup({ street: new FormControl() })
* });
* ```
*
* The path to the 'street' control from the root form would be 'address' -> 'street'.
*
* It can be provided to this method in one of two formats:
*
* 1. An array of string control names, e.g. `['address', 'street']`
* 1. A period-delimited list of control names in one string, e.g. `'address.street'`
*
* If no path is given, this method checks for the error on the current control.
*
* @returns whether the given error is present in the control at the given path.
*
* If the control is not present, false is returned.
*/
hasError(errorCode: string, path?: Array<string | number> | string): boolean;
/**
* @description
* Reports error data for the control with the given path.
*
* @param errorCode The code of the error to check
* @param path A list of control names that designates how to move from the current control
* to the control that should be queried for errors.
*
* @usageNotes
* For example, for the following `FormGroup`:
*
* ```
* form = new FormGroup({
* address: new FormGroup({ street: new FormControl() })
* });
* ```
*
* The path to the 'street' control from the root form would be 'address' -> 'street'.
*
* It can be provided to this method in one of two formats:
*
* 1. An array of string control names, e.g. `['address', 'street']`
* 1. A period-delimited list of control names in one string, e.g. `'address.street'`
*
* @returns error data for that particular error. If the control or error is not present,
* null is returned.
*/
getError(errorCode: string, path?: Array<string | number> | string): any;
}
/**
* Interface for options provided to an `AbstractControl`.
*
* @publicApi
*/
export declare interface AbstractControlOptions {
/**
* @description
* The list of validators applied to a control.
*/
validators?: ValidatorFn | ValidatorFn[] | null;
/**
* @description
* The list of async validators applied to control.
*/
asyncValidators?: AsyncValidatorFn | AsyncValidatorFn[] | null;
/**
* @description
* The event name for control to update upon.
*/
updateOn?: 'change' | 'blur' | 'submit';
}
/**
* @description
* A base class for code shared between the `NgModelGroup` and `FormGroupName` directives.
*
* @publicApi
*/
export declare class AbstractFormGroupDirective extends ControlContainer implements OnInit, OnDestroy {
/**
* @description
* An internal callback method triggered on the instance after the inputs are set.
* Registers the group with its parent group.
*/
ngOnInit(): void;
/**
* @description
* An internal callback method triggered before the instance is destroyed.
* Removes the group from its parent group.
*/
ngOnDestroy(): void;
/**
* @description
* The `FormGroup` bound to this directive.
*/
readonly control: FormGroup;
/**
* @description
* The path to this group from the top-level directive.
*/
readonly path: string[];
/**
* @description
* The top-level directive for this group if present, otherwise null.
*/
readonly formDirective: Form | null;
/**
* @description
* The synchronous validators registered with this group.
*/
readonly validator: ValidatorFn | null;
/**
* @description
* The async validators registered with this group.
*/
readonly asyncValidator: AsyncValidatorFn | null;
}
/**
* @description
* An interface implemented by classes that perform asynchronous validation.
*
* @usageNotes
*
* ### Provide a custom async validator directive
*
* The following example implements the `AsyncValidator` interface to create an
* async validator directive with a custom error key.
*
* ```typescript
* import { of as observableOf } from 'rxjs';
*
* @Directive({
* selector: '[customAsyncValidator]',
* providers: [{provide: NG_ASYNC_VALIDATORS, useExisting: CustomAsyncValidatorDirective, multi:
* true}]
* })
* class CustomAsyncValidatorDirective implements AsyncValidator {
* validate(control: AbstractControl): Observable<ValidationErrors|null> {
* return observableOf({'custom': true});
* }
* }
* ```
*
* @publicApi
*/
export declare interface AsyncValidator extends Validator {
/**
* @description
* Method that performs async validation against the provided control.
*
* @param control The control to validate against.
*
* @returns A promise or observable that resolves a map of validation errors
* if validation fails, otherwise null.
*/
validate(control: AbstractControl): Promise<ValidationErrors | null> | Observable<ValidationErrors | null>;
}
/**
* @description
* A function that receives a control and returns a Promise or observable
* that emits validation errors if present, otherwise null.
*
* @publicApi
*/
export declare interface AsyncValidatorFn {
(control: AbstractControl): Promise<ValidationErrors | null> | Observable<ValidationErrors | null>;
}
/**
* @description
* A `ControlValueAccessor` for writing a value and listening to changes on a checkbox input
* element.
*
* @usageNotes
*
* ### Using a checkbox with a reactive form.
*
* The following example shows how to use a checkbox with a reactive form.
*
* ```ts
* const rememberLoginControl = new FormControl();
* ```
*
* ```
* <input type="checkbox" [formControl]="rememberLoginControl">
* ```
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class CheckboxControlValueAccessor implements ControlValueAccessor {
private _renderer;
private _elementRef;
/**
* @description
* The registered callback function called when a change event occurs on the input element.
*/
onChange: (_: any) => void;
/**
* @description
* The registered callback function called when a blur event occurs on the input element.
*/
onTouched: () => void;
constructor(_renderer: Renderer2, _elementRef: ElementRef);
/**
* Sets the "checked" property on the input element.
*
* @param value The checked value
*/
writeValue(value: any): void;
/**
* @description
* Registers a function called when the control value changes.
*
* @param fn The callback function
*/
registerOnChange(fn: (_: any) => {}): void;
/**
* @description
* Registers a function called when the control is touched.
*
* @param fn The callback function
*/
registerOnTouched(fn: () => {}): void;
/**
* Sets the "disabled" property on the input element.
*
* @param isDisabled The disabled value
*/
setDisabledState(isDisabled: boolean): void;
}
/**
* A Directive that adds the `required` validator to checkbox controls marked with the
* `required` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.
*
* @see [Form Validation](guide/form-validation)
*
* @usageNotes
*
* ### Adding a required checkbox validator using template-driven forms
*
* The following example shows how to add a checkbox required validator to an input attached to an ngModel binding.
*
* ```
* <input type="checkbox" name="active" ngModel required>
* ```
*
* @publicApi
* @ngModule FormsModule
* @ngModule ReactiveFormsModule
*/
export declare class CheckboxRequiredValidator extends RequiredValidator {
/**
* @description
* Method that validates whether or not the checkbox has been checked.
* Returns the validation result if enabled, otherwise null.
*/
validate(control: AbstractControl): ValidationErrors | null;
}
/**
* @description
* Provide this token to control if form directives buffer IME input until
* the "compositionend" event occurs.
* @publicApi
*/
export declare const COMPOSITION_BUFFER_MODE: InjectionToken<boolean>;
/**
* @description
* A base class for directives that contain multiple registered instances of `NgControl`.
* Only used by the forms module.
*
* @publicApi
*/
export declare abstract class ControlContainer extends AbstractControlDirective {
/**
* @description
* The name for the control
*/
name: string;
/**
* @description
* The top-level form directive for the control.
*/
readonly formDirective: Form | null;
/**
* @description
* The path to this group.
*/
readonly path: string[] | null;
}
/**
* @description
* Defines an interface that acts as a bridge between the Angular forms API and a
* native element in the DOM.
*
* Implement this interface to create a custom form control directive
* that integrates with Angular forms.
*
* @see DefaultValueAccessor
*
* @publicApi
*/
export declare interface ControlValueAccessor {
/**
* @description
* Writes a new value to the element.
*
* This method is called by the forms API to write to the view when programmatic
* changes from model to view are requested.
*
* @usageNotes
* ### Write a value to the element
*
* The following example writes a value to the native DOM element.
*
* ```ts
* writeValue(value: any): void {
* this._renderer.setProperty(this._elementRef.nativeElement, 'value', value);
* }
* ```
*
* @param obj The new value for the element
*/
writeValue(obj: any): void;
/**
* @description
* Registers a callback function that is called when the control's value
* changes in the UI.
*
* This method is called by the forms API on initialization to update the form
* model when values propagate from the view to the model.
*
* When implementing the `registerOnChange` method in your own value accessor,
* save the given function so your class calls it at the appropriate time.
*
* @usageNotes
* ### Store the change function
*
* The following example stores the provided function as an internal method.
*
* ```ts
* registerOnChange(fn: (_: any) => void): void {
* this._onChange = fn;
* }
* ```
*
* When the value changes in the UI, call the registered
* function to allow the forms API to update itself:
*
* ```ts
* host: {
* '(change)': '_onChange($event.target.value)'
* }
* ```
*
* @param fn The callback function to register
*/
registerOnChange(fn: any): void;
/**
* @description
* Registers a callback function is called by the forms API on initialization
* to update the form model on blur.
*
* When implementing `registerOnTouched` in your own value accessor, save the given
* function so your class calls it when the control should be considered
* blurred or "touched".
*
* @usageNotes
* ### Store the callback function
*
* The following example stores the provided function as an internal method.
*
* ```ts
* registerOnTouched(fn: any): void {
* this._onTouched = fn;
* }
* ```
*
* On blur (or equivalent), your class should call the registered function to allow
* the forms API to update itself:
*
* ```ts
* host: {
* '(blur)': '_onTouched()'
* }
* ```
*
* @param fn The callback function to register
*/
registerOnTouched(fn: any): void;
/**
* @description
* Function that is called by the forms API when the control status changes to
* or from 'DISABLED'. Depending on the status, it enables or disables the
* appropriate DOM element.
*
* @usageNotes
* The following is an example of writing the disabled property to a native DOM element:
*
* ```ts
* setDisabledState(isDisabled: boolean): void {
* this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);
* }
* ```
*
* @param isDisabled The disabled status to set on the element
*/
setDisabledState?(isDisabled: boolean): void;
}
/**
* @description
* The default `ControlValueAccessor` for writing a value and listening to changes on input
* elements. The accessor is used by the `FormControlDirective`, `FormControlName`, and
* `NgModel` directives.
*
* @usageNotes
*
* ### Using the default value accessor
*
* The following example shows how to use an input element that activates the default value accessor
* (in this case, a text field).
*
* ```ts
* const firstNameControl = new FormControl();
* ```
*
* ```
* <input type="text" [formControl]="firstNameControl">
* ```
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class DefaultValueAccessor implements ControlValueAccessor {
private _renderer;
private _elementRef;
private _compositionMode;
/**
* @description
* The registered callback function called when an input event occurs on the input element.
*/
onChange: (_: any) => void;
/**
* @description
* The registered callback function called when a blur event occurs on the input element.
*/
onTouched: () => void;
/** Whether the user is creating a composition string (IME events). */
private _composing;
constructor(_renderer: Renderer2, _elementRef: ElementRef, _compositionMode: boolean);
/**
* Sets the "value" property on the input element.
*
* @param value The checked value
*/
writeValue(value: any): void;
/**
* @description
* Registers a function called when the control value changes.
*
* @param fn The callback function
*/
registerOnChange(fn: (_: any) => void): void;
/**
* @description
* Registers a function called when the control is touched.
*
* @param fn The callback function
*/
registerOnTouched(fn: () => void): void;
/**
* Sets the "disabled" property on the input element.
*
* @param isDisabled The disabled value
*/
setDisabledState(isDisabled: boolean): void;
}
/**
* A directive that adds the `email` validator to controls marked with the
* `email` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.
*
* @see [Form Validation](guide/form-validation)
*
* @usageNotes
*
* ### Adding an email validator
*
* The following example shows how to add an email validator to an input attached to an ngModel binding.
*
* ```
* <input type="email" name="email" ngModel email>
* <input type="email" name="email" ngModel email="true">
* <input type="email" name="email" ngModel [email]="true">
* ```
*
* @publicApi
* @ngModule FormsModule
* @ngModule ReactiveFormsModule
*/
export declare class EmailValidator implements Validator {
private _enabled;
private _onChange;
/**
* @description
* Tracks changes to the email attribute bound to this directive.
*/
email: boolean | string;
/**
* @description
* Method that validates whether an email address is valid.
* Returns the validation result if enabled, otherwise null.
*/
validate(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Registers a callback function to call when the validator inputs change.
*
* @param fn The callback function
*/
registerOnValidatorChange(fn: () => void): void;
}
/**
* @description
* An interface implemented by `FormGroupDirective` and `NgForm` directives.
*
* Only used by the `ReactiveFormsModule` and `FormsModule`.
*
* @publicApi
*/
export declare interface Form {
/**
* @description
* Add a control to this form.
*
* @param dir The control directive to add to the form.
*/
addControl(dir: NgControl): void;
/**
* @description
* Remove a control from this form.
*
* @param dir: The control directive to remove from the form.
*/
removeControl(dir: NgControl): void;
/**
* @description
* The control directive from which to get the `FormControl`.
*
* @param dir: The control directive.
*/
getControl(dir: NgControl): FormControl;
/**
* @description
* Add a group of controls to this form.
*
* @param dir: The control group directive to add.
*/
addFormGroup(dir: AbstractFormGroupDirective): void;
/**
* @description
* Remove a group of controls to this form.
*
* @param dir: The control group directive to remove.
*/
removeFormGroup(dir: AbstractFormGroupDirective): void;
/**
* @description
* The `FormGroup` associated with a particular `AbstractFormGroupDirective`.
*
* @param dir: The form group directive from which to get the `FormGroup`.
*/
getFormGroup(dir: AbstractFormGroupDirective): FormGroup;
/**
* @description
* Update the model for a particular control with a new value.
*
* @param dir: The control directive to update.
* @param value: The new value for the control.
*/
updateModel(dir: NgControl, value: any): void;
}
/**
* Tracks the value and validity state of an array of `FormControl`,
* `FormGroup` or `FormArray` instances.
*
* A `FormArray` aggregates the values of each child `FormControl` into an array.
* It calculates its status by reducing the status values of its children. For example, if one of
* the controls in a `FormArray` is invalid, the entire array becomes invalid.
*
* `FormArray` is one of the three fundamental building blocks used to define forms in Angular,
* along with `FormControl` and `FormGroup`.
*
* @usageNotes
*
* ### Create an array of form controls
*
* ```
* const arr = new FormArray([
* new FormControl('Nancy', Validators.minLength(2)),
* new FormControl('Drew'),
* ]);
*
* console.log(arr.value); // ['Nancy', 'Drew']
* console.log(arr.status); // 'VALID'
* ```
*
* ### Create a form array with array-level validators
*
* You include array-level validators and async validators. These come in handy
* when you want to perform validation that considers the value of more than one child
* control.
*
* The two types of validators are passed in separately as the second and third arg
* respectively, or together as part of an options object.
*
* ```
* const arr = new FormArray([
* new FormControl('Nancy'),
* new FormControl('Drew')
* ], {validators: myValidator, asyncValidators: myAsyncValidator});
* ```
*
* ### Set the updateOn property for all controls in a form array
*
* The options object is used to set a default value for each child
* control's `updateOn` property. If you set `updateOn` to `'blur'` at the
* array level, all child controls default to 'blur', unless the child
* has explicitly specified a different `updateOn` value.
*
* ```ts
* const arr = new FormArray([
* new FormControl()
* ], {updateOn: 'blur'});
* ```
*
* ### Adding or removing controls from a form array
*
* To change the controls in the array, use the `push`, `insert`, `removeAt` or `clear` methods
* in `FormArray` itself. These methods ensure the controls are properly tracked in the
* form's hierarchy. Do not modify the array of `AbstractControl`s used to instantiate
* the `FormArray` directly, as that result in strange and unexpected behavior such
* as broken change detection.
*
* @publicApi
*/
export declare class FormArray extends AbstractControl {
controls: AbstractControl[];
/**
* Creates a new `FormArray` instance.
*
* @param controls An array of child controls. Each child control is given an index
* where it is registered.
*
* @param validatorOrOpts A synchronous validator function, or an array of
* such functions, or an `AbstractControlOptions` object that contains validation functions
* and a validation trigger.
*
* @param asyncValidator A single async validator or array of async validator functions
*
*/
constructor(controls: AbstractControl[], validatorOrOpts?: ValidatorFn | ValidatorFn[] | AbstractControlOptions | null, asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null);
/**
* Get the `AbstractControl` at the given `index` in the array.
*
* @param index Index in the array to retrieve the control
*/
at(index: number): AbstractControl;
/**
* Insert a new `AbstractControl` at the end of the array.
*
* @param control Form control to be inserted
*/
push(control: AbstractControl): void;
/**
* Insert a new `AbstractControl` at the given `index` in the array.
*
* @param index Index in the array to insert the control
* @param control Form control to be inserted
*/
insert(index: number, control: AbstractControl): void;
/**
* Remove the control at the given `index` in the array.
*
* @param index Index in the array to remove the control
*/
removeAt(index: number): void;
/**
* Replace an existing control.
*
* @param index Index in the array to replace the control
* @param control The `AbstractControl` control to replace the existing control
*/
setControl(index: number, control: AbstractControl): void;
/**
* Length of the control array.
*/
readonly length: number;
/**
* Sets the value of the `FormArray`. It accepts an array that matches
* the structure of the control.
*
* This method performs strict checks, and throws an error if you try
* to set the value of a control that doesn't exist or if you exclude the
* value of a control.
*
* @usageNotes
* ### Set the values for the controls in the form array
*
* ```
* const arr = new FormArray([
* new FormControl(),
* new FormControl()
* ]);
* console.log(arr.value); // [null, null]
*
* arr.setValue(['Nancy', 'Drew']);
* console.log(arr.value); // ['Nancy', 'Drew']
* ```
*
* @param value Array of values for the controls
* @param options Configure options that determine how the control propagates changes and
* emits events after the value changes
*
* * `onlySelf`: When true, each change only affects this control, and not its parent. Default
* is false.
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control value is updated.
* When false, no events are emitted.
* The configuration options are passed to the {@link AbstractControl#updateValueAndValidity
* updateValueAndValidity} method.
*/
setValue(value: any[], options?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
/**
* Patches the value of the `FormArray`. It accepts an array that matches the
* structure of the control, and does its best to match the values to the correct
* controls in the group.
*
* It accepts both super-sets and sub-sets of the array without throwing an error.
*
* @usageNotes
* ### Patch the values for controls in a form array
*
* ```
* const arr = new FormArray([
* new FormControl(),
* new FormControl()
* ]);
* console.log(arr.value); // [null, null]
*
* arr.patchValue(['Nancy']);
* console.log(arr.value); // ['Nancy', null]
* ```
*
* @param value Array of latest values for the controls
* @param options Configure options that determine how the control propagates changes and
* emits events after the value changes
*
* * `onlySelf`: When true, each change only affects this control, and not its parent. Default
* is false.
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control value is updated.
* When false, no events are emitted.
* The configuration options are passed to the {@link AbstractControl#updateValueAndValidity
* updateValueAndValidity} method.
*/
patchValue(value: any[], options?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
/**
* Resets the `FormArray` and all descendants are marked `pristine` and `untouched`, and the
* value of all descendants to null or null maps.
*
* You reset to a specific form state by passing in an array of states
* that matches the structure of the control. The state is a standalone value
* or a form state object with both a value and a disabled status.
*
* @usageNotes
* ### Reset the values in a form array
*
* ```ts
* const arr = new FormArray([
* new FormControl(),
* new FormControl()
* ]);
* arr.reset(['name', 'last name']);
*
* console.log(this.arr.value); // ['name', 'last name']
* ```
*
* ### Reset the values in a form array and the disabled status for the first control
*
* ```
* this.arr.reset([
* {value: 'name', disabled: true},
* 'last'
* ]);
*
* console.log(this.arr.value); // ['name', 'last name']
* console.log(this.arr.get(0).status); // 'DISABLED'
* ```
*
* @param value Array of values for the controls
* @param options Configure options that determine how the control propagates changes and
* emits events after the value changes
*
* * `onlySelf`: When true, each change only affects this control, and not its parent. Default
* is false.
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control is reset.
* When false, no events are emitted.
* The configuration options are passed to the {@link AbstractControl#updateValueAndValidity
* updateValueAndValidity} method.
*/
reset(value?: any, options?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
/**
* The aggregate value of the array, including any disabled controls.
*
* Reports all values regardless of disabled status.
* For enabled controls only, the `value` property is the best way to get the value of the array.
*/
getRawValue(): any[];
/**
* Remove all controls in the `FormArray`.
*
* @usageNotes
* ### Remove all elements from a FormArray
*
* ```ts
* const arr = new FormArray([
* new FormControl(),
* new FormControl()
* ]);
* console.log(arr.length); // 2
*
* arr.clear();
* console.log(arr.length); // 0
* ```
*
* It's a simpler and more efficient alternative to removing all elements one by one:
*
* ```ts
* const arr = new FormArray([
* new FormControl(),
* new FormControl()
* ]);
*
* while (arr.length) {
* arr.removeAt(0);
* }
* ```
*/
clear(): void;
private _registerControl;
}
/**
* @description
*
* Syncs a nested `FormArray` to a DOM element.
*
* This directive is designed to be used with a parent `FormGroupDirective` (selector:
* `[formGroup]`).
*
* It accepts the string name of the nested `FormArray` you want to link, and
* will look for a `FormArray` registered with that name in the parent
* `FormGroup` instance you passed into `FormGroupDirective`.
*
* @see [Reactive Forms Guide](guide/reactive-forms)
* @see `AbstractControl`
*
* @usageNotes
*
* ### Example
*
* {@example forms/ts/nestedFormArray/nested_form_array_example.ts region='Component'}
*
* @ngModule ReactiveFormsModule
* @publicApi
*/
export declare class FormArrayName extends ControlContainer implements OnInit, OnDestroy {
/**
* @description
* Tracks the name of the `FormArray` bound to the directive. The name corresponds
* to a key in the parent `FormGroup` or `FormArray`.
*/
name: string;
constructor(parent: ControlContainer, validators: any[], asyncValidators: any[]);
/**
* @description
* A lifecycle method called when the directive's inputs are initialized. For internal use only.
*
* @throws If the directive does not have a valid parent.
*/
ngOnInit(): void;
/**
* @description
* A lifecycle method called before the directive's instance is destroyed. For internal use only.
*/
ngOnDestroy(): void;
/**
* @description
* The `FormArray` bound to this directive.
*/
readonly control: FormArray;
/**
* @description
* The top-level directive for this group if present, otherwise null.
*/
readonly formDirective: FormGroupDirective | null;
/**
* @description
* Returns an array that represents the path from the top-level form to this control.
* Each index is the string name of the control on that level.
*/
readonly path: string[];
/**
* @description
* Synchronous validator function composed of all the synchronous validators registered with this
* directive.
*/
readonly validator: ValidatorFn | null;
/**
* @description
* Async validator function composed of all the async validators registered with this directive.
*/
readonly asyncValidator: AsyncValidatorFn | null;
private _checkParentType;
}
/**
* @description
* Creates an `AbstractControl` from a user-specified configuration.
*
* The `FormBuilder` provides syntactic sugar that shortens creating instances of a `FormControl`,
* `FormGroup`, or `FormArray`. It reduces the amount of boilerplate needed to build complex
* forms.
*
* @see [Reactive Forms Guide](/guide/reactive-forms)
*
* @publicApi
*/
export declare class FormBuilder {
/**
* @description
* Construct a new `FormGroup` instance.
*
* @param controlsConfig A collection of child controls. The key for each child is the name
* under which it is registered.
*
* @param options Configuration options object for the `FormGroup`. The object can
* have two shapes:
*
* 1) `AbstractControlOptions` object (preferred), which consists of:
* * `validators`: A synchronous validator function, or an array of validator functions
* * `asyncValidators`: A single async validator or array of async validator functions
* * `updateOn`: The event upon which the control should be updated (options: 'change' | 'blur' |
* submit')
*
* 2) Legacy configuration object, which consists of:
* * `validator`: A synchronous validator function, or an array of validator functions
* * `asyncValidator`: A single async validator or array of async validator functions
*
*/
group(controlsConfig: {
[key: string]: any;
}, options?: AbstractControlOptions | {
[key: string]: any;
} | null): FormGroup;
/**
* @description
* Construct a new `FormControl` with the given state, validators and options.
*
* @param formState Initializes the control with an initial state value, or
* with an object that contains both a value and a disabled status.
*
* @param validatorOrOpts A synchronous validator function, or an array of
* such functions, or an `AbstractControlOptions` object that contains
* validation functions and a validation trigger.
*
* @param asyncValidator A single async validator or array of async validator
* functions.
*
* @usageNotes
*
* ### Initialize a control as disabled
*
* The following example returns a control with an initial value in a disabled state.
*
* <code-example path="forms/ts/formBuilder/form_builder_example.ts"
* linenums="false" region="disabled-control">
* </code-example>
*/
control(formState: any, validatorOrOpts?: ValidatorFn | ValidatorFn[] | AbstractControlOptions | null, asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null): FormControl;
/**
* Constructs a new `FormArray` from the given array of configurations,
* validators and options.
*
* @param controlsConfig An array of child controls or control configs. Each
* child control is given an index when it is registered.
*
* @param validatorOrOpts A synchronous validator function, or an array of
* such functions, or an `AbstractControlOptions` object that contains
* validation functions and a validation trigger.
*
* @param asyncValidator A single async validator or array of async validator
* functions.
*/
array(controlsConfig: any[], validatorOrOpts?: ValidatorFn | ValidatorFn[] | AbstractControlOptions | null, asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null): FormArray;
}
/**
* Tracks the value and validation status of an individual form control.
*
* This is one of the three fundamental building blocks of Angular forms, along with
* `FormGroup` and `FormArray`. It extends the `AbstractControl` class that
* implements most of the base functionality for accessing the value, validation status,
* user interactions and events.
*
* @see `AbstractControl`
* @see [Reactive Forms Guide](guide/reactive-forms)
* @see [Usage Notes](#usage-notes)
*
* @usageNotes
*
* ### Initializing Form Controls
*
* Instantiate a `FormControl`, with an initial value.
*
* ```ts
* const control = new FormControl('some value');
* console.log(control.value); // 'some value'
*```
*
* The following example initializes the control with a form state object. The `value`
* and `disabled` keys are required in this case.
*
* ```ts
* const control = new FormControl({ value: 'n/a', disabled: true });
* console.log(control.value); // 'n/a'
* console.log(control.status); // 'DISABLED'
* ```
*
* The following example initializes the control with a sync validator.
*
* ```ts
* const control = new FormControl('', Validators.required);
* console.log(control.value); // ''
* console.log(control.status); // 'INVALID'
* ```
*
* The following example initializes the control using an options object.
*
* ```ts
* const control = new FormControl('', {
* validators: Validators.required,
* asyncValidators: myAsyncValidator
* });
* ```
*
* ### Configure the control to update on a blur event
*
* Set the `updateOn` option to `'blur'` to update on the blur `event`.
*
* ```ts
* const control = new FormControl('', { updateOn: 'blur' });
* ```
*
* ### Configure the control to update on a submit event
*
* Set the `updateOn` option to `'submit'` to update on a submit `event`.
*
* ```ts
* const control = new FormControl('', { updateOn: 'submit' });
* ```
*
* ### Reset the control back to an initial value
*
* You reset to a specific form state by passing through a standalone
* value or a form state object that contains both a value and a disabled state
* (these are the only two properties that cannot be calculated).
*
* ```ts
* const control = new FormControl('Nancy');
*
* console.log(control.value); // 'Nancy'
*
* control.reset('Drew');
*
* console.log(control.value); // 'Drew'
* ```
*
* ### Reset the control back to an initial value and disabled
*
* ```
* const control = new FormControl('Nancy');
*
* console.log(control.value); // 'Nancy'
* console.log(control.status); // 'VALID'
*
* control.reset({ value: 'Drew', disabled: true });
*
* console.log(control.value); // 'Drew'
* console.log(control.status); // 'DISABLED'
* ```
*
* @publicApi
*/
export declare class FormControl extends AbstractControl {
/**
* Creates a new `FormControl` instance.
*
* @param formState Initializes the control with an initial value,
* or an object that defines the initial value and disabled state.
*
* @param validatorOrOpts A synchronous validator function, or an array of
* such functions, or an `AbstractControlOptions` object that contains validation functions
* and a validation trigger.
*
* @param asyncValidator A single async validator or array of async validator functions
*
*/
constructor(formState?: any, validatorOrOpts?: ValidatorFn | ValidatorFn[] | AbstractControlOptions | null, asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null);
/**
* Sets a new value for the form control.
*
* @param value The new value for the control.
* @param options Configuration options that determine how the control propagates changes
* and emits events when the value changes.
* The configuration options are passed to the {@link AbstractControl#updateValueAndValidity
* updateValueAndValidity} method.
*
* * `onlySelf`: When true, each change only affects this control, and not its parent. Default is
* false.
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control value is updated.
* When false, no events are emitted.
* * `emitModelToViewChange`: When true or not supplied (the default), each change triggers an
* `onChange` event to
* update the view.
* * `emitViewToModelChange`: When true or not supplied (the default), each change triggers an
* `ngModelChange`
* event to update the model.
*
*/
setValue(value: any, options?: {
onlySelf?: boolean;
emitEvent?: boolean;
emitModelToViewChange?: boolean;
emitViewToModelChange?: boolean;
}): void;
/**
* Patches the value of a control.
*
* This function is functionally the same as {@link FormControl#setValue setValue} at this level.
* It exists for symmetry with {@link FormGroup#patchValue patchValue} on `FormGroups` and
* `FormArrays`, where it does behave differently.
*
* @see `setValue` for options
*/
patchValue(value: any, options?: {
onlySelf?: boolean;
emitEvent?: boolean;
emitModelToViewChange?: boolean;
emitViewToModelChange?: boolean;
}): void;
/**
* Resets the form control, marking it `pristine` and `untouched`, and setting
* the value to null.
*
* @param formState Resets the control with an initial value,
* or an object that defines the initial value and disabled state.
*
* @param options Configuration options that determine how the control propagates changes
* and emits events after the value changes.
*
* * `onlySelf`: When true, each change only affects this control, and not its parent. Default is
* false.
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control is reset.
* When false, no events are emitted.
*
*/
reset(formState?: any, options?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
/**
* Register a listener for change events.
*
* @param fn The method that is called when the value changes
*/
registerOnChange(fn: Function): void;
/**
* Register a listener for disabled events.
*
* @param fn The method that is called when the disabled status changes.
*/
registerOnDisabledChange(fn: (isDisabled: boolean) => void): void;
private _applyFormState;
}
/**
* @description
* * Syncs a standalone `FormControl` instance to a form control element.
*
* @see [Reactive Forms Guide](guide/reactive-forms)
* @see `FormControl`
* @see `AbstractControl`
*
* @usageNotes
*
* ### Registering a single form control
*
* The following examples shows how to register a standalone control and set its value.
*
* {@example forms/ts/simpleFormControl/simple_form_control_example.ts region='Component'}
*
* ### Use with ngModel
*
* Support for using the `ngModel` input property and `ngModelChange` event with reactive
* form directives has been deprecated in Angular v6 and will be removed in Angular v7.
*
* Now deprecated:
*
* ```html
* <input [formControl]="control" [(ngModel)]="value">
* ```
*
* ```ts
* this.value = 'some value';
* ```
*
* This has been deprecated for a few reasons. First, developers have found this pattern
* confusing. It seems like the actual `ngModel` directive is being used, but in fact it's
* an input/output property named `ngModel` on the reactive form directive that simply
* approximates (some of) its behavior. Specifically, it allows getting/setting the value
* and intercepting value events. However, some of `ngModel`'s other features - like
* delaying updates with`ngModelOptions` or exporting the directive - simply don't work,
* which has understandably caused some confusion.
*
* In addition, this pattern mixes template-driven and reactive forms strategies, which
* we generally don't recommend because it doesn't take advantage of the full benefits of
* either strategy. Setting the value in the template violates the template-agnostic
* principles behind reactive forms, whereas adding a `FormControl`/`FormGroup` layer in
* the class removes the convenience of defining forms in the template.
*
* To update your code before v7, you'll want to decide whether to stick with reactive form
* directives (and get/set values using reactive forms patterns) or switch over to
* template-driven directives.
*
* After (choice 1 - use reactive forms):
*
* ```html
* <input [formControl]="control">
* ```
*
* ```ts
* this.control.setValue('some value');
* ```
*
* After (choice 2 - use template-driven forms):
*
* ```html
* <input [(ngModel)]="value">
* ```
*
* ```ts
* this.value = 'some value';
* ```
*
* By default, when you use this pattern, you will see a deprecation warning once in dev
* mode. You can choose to silence this warning by providing a config for
* `ReactiveFormsModule` at import time:
*
* ```ts
* imports: [
* ReactiveFormsModule.withConfig({warnOnNgModelWithFormControl: 'never'});
* ]
* ```
*
* Alternatively, you can choose to surface a separate warning for each instance of this
* pattern with a config value of `"always"`. This may help to track down where in the code
* the pattern is being used as the code is being updated.
*
* @ngModule ReactiveFormsModule
* @publicApi
*/
export declare class FormControlDirective extends NgControl implements OnChanges {
private _ngModelWarningConfig;
/**
* @description
* Internal reference to the view model value.
*/
viewModel: any;
/**
* @description
* Tracks the `FormControl` instance bound to the directive.
*/
form: FormControl;
/**
* @description
* Triggers a warning that this input should not be used with reactive forms.
*/
isDisabled: boolean;
/** @deprecated as of v6 */
model: any;
/** @deprecated as of v6 */
update: EventEmitter<{}>;
constructor(validators: Array<Validator | ValidatorFn>, asyncValidators: Array<AsyncValidator | AsyncValidatorFn>, valueAccessors: ControlValueAccessor[], _ngModelWarningConfig: string | null);
/**
* @description
* A lifecycle method called when the directive's inputs change. For internal use
* only.
*
* @param changes A object of key/value pairs for the set of changed inputs.
*/
ngOnChanges(changes: SimpleChanges): void;
/**
* @description
* Returns an array that represents the path from the top-level form to this control.
* Each index is the string name of the control on that level.
*/
readonly path: string[];
/**
* @description
* Synchronous validator function composed of all the synchronous validators
* registered with this directive.
*/
readonly validator: ValidatorFn | null;
/**
* @description
* Async validator function composed of all the async validators registered with this
* directive.
*/
readonly asyncValidator: AsyncValidatorFn | null;
/**
* @description
* The `FormControl` bound to this directive.
*/
readonly control: FormControl;
/**
* @description
* Sets the new value for the view model and emits an `ngModelChange` event.
*
* @param newValue The new value for the view model.
*/
viewToModelUpdate(newValue: any): void;
private _isControlChanged;
}
/**
* @description
* Syncs a `FormControl` in an existing `FormGroup` to a form control
* element by name.
*
* @see [Reactive Forms Guide](guide/reactive-forms)
* @see `FormControl`
* @see `AbstractControl`
*
* @usageNotes
*
* ### Register `FormControl` within a group
*
* The following example shows how to register multiple form controls within a form group
* and set their value.
*
* {@example forms/ts/simpleFormGroup/simple_form_group_example.ts region='Component'}
*
* To see `formControlName` examples with different form control types, see:
*
* * Radio buttons: `RadioControlValueAccessor`
* * Selects: `SelectControlValueAccessor`
*
* ### Use with ngModel
*
* Support for using the `ngModel` input property and `ngModelChange` event with reactive
* form directives has been deprecated in Angular v6 and will be removed in Angular v7.
*
* Now deprecated:
*
* ```html
* <form [formGroup]="form">
* <input formControlName="first" [(ngModel)]="value">
* </form>
* ```
*
* ```ts
* this.value = 'some value';
* ```
*
* This has been deprecated for a few reasons. First, developers have found this pattern
* confusing. It seems like the actual `ngModel` directive is being used, but in fact it's
* an input/output property named `ngModel` on the reactive form directive that simply
* approximates (some of) its behavior. Specifically, it allows getting/setting the value
* and intercepting value events. However, some of `ngModel`'s other features - like
* delaying updates with`ngModelOptions` or exporting the directive - simply don't work,
* which has understandably caused some confusion.
*
* In addition, this pattern mixes template-driven and reactive forms strategies, which
* we generally don't recommend because it doesn't take advantage of the full benefits of
* either strategy. Setting the value in the template violates the template-agnostic
* principles behind reactive forms, whereas adding a `FormControl`/`FormGroup` layer in
* the class removes the convenience of defining forms in the template.
*
* To update your code before v7, you'll want to decide whether to stick with reactive form
* directives (and get/set values using reactive forms patterns) or switch over to
* template-driven directives.
*
* After (choice 1 - use reactive forms):
*
* ```html
* <form [formGroup]="form">
* <input formControlName="first">
* </form>
* ```
*
* ```ts
* this.form.get('first').setValue('some value');
* ```
*
* After (choice 2 - use template-driven forms):
*
* ```html
* <input [(ngModel)]="value">
* ```
*
* ```ts
* this.value = 'some value';
* ```
*
* By default, when you use this pattern, you will see a deprecation warning once in dev
* mode. You can choose to silence this warning by providing a config for
* `ReactiveFormsModule` at import time:
*
* ```ts
* imports: [
* ReactiveFormsModule.withConfig({warnOnNgModelWithFormControl: 'never'})
* ]
* ```
*
* Alternatively, you can choose to surface a separate warning for each instance of this
* pattern with a config value of `"always"`. This may help to track down where in the code
* the pattern is being used as the code is being updated.
*
* @ngModule ReactiveFormsModule
* @publicApi
*/
export declare class FormControlName extends NgControl implements OnChanges, OnDestroy {
private _ngModelWarningConfig;
private _added;
/**
* @description
* Tracks the `FormControl` instance bound to the directive.
*/
readonly control: FormControl;
/**
* @description
* Tracks the name of the `FormControl` bound to the directive. The name corresponds
* to a key in the parent `FormGroup` or `FormArray`.
*/
name: string;
/**
* @description
* Triggers a warning that this input should not be used with reactive forms.
*/
isDisabled: boolean;
/** @deprecated as of v6 */
model: any;
/** @deprecated as of v6 */
update: EventEmitter<{}>;
constructor(parent: ControlContainer, validators: Array<Validator | ValidatorFn>, asyncValidators: Array<AsyncValidator | AsyncValidatorFn>, valueAccessors: ControlValueAccessor[], _ngModelWarningConfig: string | null);
/**
* @description
* A lifecycle method called when the directive's inputs change. For internal use only.
*
* @param changes A object of key/value pairs for the set of changed inputs.
*/
ngOnChanges(changes: SimpleChanges): void;
/**
* @description
* Lifecycle method called before the directive's instance is destroyed. For internal use only.
*/
ngOnDestroy(): void;
/**
* @description
* Sets the new value for the view model and emits an `ngModelChange` event.
*
* @param newValue The new value for the view model.
*/
viewToModelUpdate(newValue: any): void;
/**
* @description
* Returns an array that represents the path from the top-level form to this control.
* Each index is the string name of the control on that level.
*/
readonly path: string[];
/**
* @description
* The top-level directive for this group if present, otherwise null.
*/
readonly formDirective: any;
/**
* @description
* Synchronous validator function composed of all the synchronous validators
* registered with this directive.
*/
readonly validator: ValidatorFn | null;
/**
* @description
* Async validator function composed of all the async validators registered with this
* directive.
*/
readonly asyncValidator: AsyncValidatorFn;
private _checkParentType;
private _setUpControl;
}
/**
* Tracks the value and validity state of a group of `FormControl` instances.
*
* A `FormGroup` aggregates the values of each child `FormControl` into one object,
* with each control name as the key. It calculates its status by reducing the status values
* of its children. For example, if one of the controls in a group is invalid, the entire
* group becomes invalid.
*
* `FormGroup` is one of the three fundamental building blocks used to define forms in Angular,
* along with `FormControl` and `FormArray`.
*
* When instantiating a `FormGroup`, pass in a collection of child controls as the first
* argument. The key for each child registers the name for the control.
*
* @usageNotes
*
* ### Create a form group with 2 controls
*
* ```
* const form = new FormGroup({
* first: new FormControl('Nancy', Validators.minLength(2)),
* last: new FormControl('Drew'),
* });
*
* console.log(form.value); // {first: 'Nancy', last; 'Drew'}
* console.log(form.status); // 'VALID'
* ```
*
* ### Create a form group with a group-level validator
*
* You include group-level validators as the second arg, or group-level async
* validators as the third arg. These come in handy when you want to perform validation
* that considers the value of more than one child control.
*
* ```
* const form = new FormGroup({
* password: new FormControl('', Validators.minLength(2)),
* passwordConfirm: new FormControl('', Validators.minLength(2)),
* }, passwordMatchValidator);
*
*
* function passwordMatchValidator(g: FormGroup) {
* return g.get('password').value === g.get('passwordConfirm').value
* ? null : {'mismatch': true};
* }
* ```
*
* Like `FormControl` instances, you choose to pass in
* validators and async validators as part of an options object.
*
* ```
* const form = new FormGroup({
* password: new FormControl('')
* passwordConfirm: new FormControl('')
* }, { validators: passwordMatchValidator, asyncValidators: otherValidator });
* ```
*
* ### Set the updateOn property for all controls in a form group
*
* The options object is used to set a default value for each child
* control's `updateOn` property. If you set `updateOn` to `'blur'` at the
* group level, all child controls default to 'blur', unless the child
* has explicitly specified a different `updateOn` value.
*
* ```ts
* const c = new FormGroup({
* one: new FormControl()
* }, { updateOn: 'blur' });
* ```
*
* @publicApi
*/
export declare class FormGroup extends AbstractControl {
controls: {
[key: string]: AbstractControl;
};
/**
* Creates a new `FormGroup` instance.
*
* @param controls A collection of child controls. The key for each child is the name
* under which it is registered.
*
* @param validatorOrOpts A synchronous validator function, or an array of
* such functions, or an `AbstractControlOptions` object that contains validation functions
* and a validation trigger.
*
* @param asyncValidator A single async validator or array of async validator functions
*
*/
constructor(controls: {
[key: string]: AbstractControl;
}, validatorOrOpts?: ValidatorFn | ValidatorFn[] | AbstractControlOptions | null, asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null);
/**
* Registers a control with the group's list of controls.
*
* This method does not update the value or validity of the control.
* Use {@link FormGroup#addControl addControl} instead.
*
* @param name The control name to register in the collection
* @param control Provides the control for the given name
*/
registerControl(name: string, control: AbstractControl): AbstractControl;
/**
* Add a control to this group.
*
* This method also updates the value and validity of the control.
*
* @param name The control name to add to the collection
* @param control Provides the control for the given name
*/
addControl(name: string, control: AbstractControl): void;
/**
* Remove a control from this group.
*
* @param name The control name to remove from the collection
*/
removeControl(name: string): void;
/**
* Replace an existing control.
*
* @param name The control name to replace in the collection
* @param control Provides the control for the given name
*/
setControl(name: string, control: AbstractControl): void;
/**
* Check whether there is an enabled control with the given name in the group.
*
* Reports false for disabled controls. If you'd like to check for existence in the group
* only, use {@link AbstractControl#get get} instead.
*
* @param name The control name to check for existence in the collection
*
* @returns false for disabled controls, true otherwise.
*/
contains(controlName: string): boolean;
/**
* Sets the value of the `FormGroup`. It accepts an object that matches
* the structure of the group, with control names as keys.
*
* @usageNotes
* ### Set the complete value for the form group
*
* ```
* const form = new FormGroup({
* first: new FormControl(),
* last: new FormControl()
* });
*
* console.log(form.value); // {first: null, last: null}
*
* form.setValue({first: 'Nancy', last: 'Drew'});
* console.log(form.value); // {first: 'Nancy', last: 'Drew'}
* ```
*
* @throws When strict checks fail, such as setting the value of a control
* that doesn't exist or if you excluding the value of a control.
*
* @param value The new value for the control that matches the structure of the group.
* @param options Configuration options that determine how the control propagates changes
* and emits events after the value changes.
* The configuration options are passed to the {@link AbstractControl#updateValueAndValidity
* updateValueAndValidity} method.
*
* * `onlySelf`: When true, each change only affects this control, and not its parent. Default is
* false.
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control value is updated.
* When false, no events are emitted.
*/
setValue(value: {
[key: string]: any;
}, options?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
/**
* Patches the value of the `FormGroup`. It accepts an object with control
* names as keys, and does its best to match the values to the correct controls
* in the group.
*
* It accepts both super-sets and sub-sets of the group without throwing an error.
*
* @usageNotes
* ### Patch the value for a form group
*
* ```
* const form = new FormGroup({
* first: new FormControl(),
* last: new FormControl()
* });
* console.log(form.value); // {first: null, last: null}
*
* form.patchValue({first: 'Nancy'});
* console.log(form.value); // {first: 'Nancy', last: null}
* ```
*
* @param value The object that matches the structure of the group.
* @param options Configuration options that determine how the control propagates changes and
* emits events after the value is patched.
* * `onlySelf`: When true, each change only affects this control and not its parent. Default is
* true.
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control value is updated.
* When false, no events are emitted.
* The configuration options are passed to the {@link AbstractControl#updateValueAndValidity
* updateValueAndValidity} method.
*/
patchValue(value: {
[key: string]: any;
}, options?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
/**
* Resets the `FormGroup`, marks all descendants are marked `pristine` and `untouched`, and
* the value of all descendants to null.
*
* You reset to a specific form state by passing in a map of states
* that matches the structure of your form, with control names as keys. The state
* is a standalone value or a form state object with both a value and a disabled
* status.
*
* @param formState Resets the control with an initial value,
* or an object that defines the initial value and disabled state.
*
* @param options Configuration options that determine how the control propagates changes
* and emits events when the group is reset.
* * `onlySelf`: When true, each change only affects this control, and not its parent. Default is
* false.
* * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and
* `valueChanges`
* observables emit events with the latest status and value when the control is reset.
* When false, no events are emitted.
* The configuration options are passed to the {@link AbstractControl#updateValueAndValidity
* updateValueAndValidity} method.
*
* @usageNotes
*
* ### Reset the form group values
*
* ```ts
* const form = new FormGroup({
* first: new FormControl('first name'),
* last: new FormControl('last name')
* });
*
* console.log(form.value); // {first: 'first name', last: 'last name'}
*
* form.reset({ first: 'name', last: 'last name' });
*
* console.log(form.value); // {first: 'name', last: 'last name'}
* ```
*
* ### Reset the form group values and disabled status
*
* ```
* const form = new FormGroup({
* first: new FormControl('first name'),
* last: new FormControl('last name')
* });
*
* form.reset({
* first: {value: 'name', disabled: true},
* last: 'last'
* });
*
* console.log(this.form.value); // {first: 'name', last: 'last name'}
* console.log(this.form.get('first').status); // 'DISABLED'
* ```
*/
reset(value?: any, options?: {
onlySelf?: boolean;
emitEvent?: boolean;
}): void;
/**
* The aggregate value of the `FormGroup`, including any disabled controls.
*
* Retrieves all values regardless of disabled status.
* The `value` property is the best way to get the value of the group, because
* it excludes disabled controls in the `FormGroup`.
*/
getRawValue(): any;
}
/**
* @description
*
* Binds an existing `FormGroup` to a DOM element.
*
* This directive accepts an existing `FormGroup` instance. It will then use this
* `FormGroup` instance to match any child `FormControl`, `FormGroup`,
* and `FormArray` instances to child `FormControlName`, `FormGroupName`,
* and `FormArrayName` directives.
*
* @see [Reactive Forms Guide](guide/reactive-forms)
* @see `AbstractControl`
*
* ### Register Form Group
*
* The following example registers a `FormGroup` with first name and last name controls,
* and listens for the *ngSubmit* event when the button is clicked.
*
* {@example forms/ts/simpleFormGroup/simple_form_group_example.ts region='Component'}
*
* @ngModule ReactiveFormsModule
* @publicApi
*/
export declare class FormGroupDirective extends ControlContainer implements Form, OnChanges {
private _validators;
private _asyncValidators;
/**
* @description
* Reports whether the form submission has been triggered.
*/
readonly submitted: boolean;
private _oldForm;
/**
* @description
* Tracks the list of added `FormControlName` instances
*/
directives: FormControlName[];
/**
* @description
* Tracks the `FormGroup` bound to this directive.
*/
form: FormGroup;
/**
* @description
* Emits an event when the form submission has been triggered.
*/
ngSubmit: EventEmitter<{}>;
constructor(_validators: any[], _asyncValidators: any[]);
/**
* @description
* A lifecycle method called when the directive's inputs change. For internal use only.
*
* @param changes A object of key/value pairs for the set of changed inputs.
*/
ngOnChanges(changes: SimpleChanges): void;
/**
* @description
* Returns this directive's instance.
*/
readonly formDirective: Form;
/**
* @description
* Returns the `FormGroup` bound to this directive.
*/
readonly control: FormGroup;
/**
* @description
* Returns an array representing the path to this group. Because this directive
* always lives at the top level of a form, it always an empty array.
*/
readonly path: string[];
/**
* @description
* Method that sets up the control directive in this group, re-calculates its value
* and validity, and adds the instance to the internal list of directives.
*
* @param dir The `FormControlName` directive instance.
*/
addControl(dir: FormControlName): FormControl;
/**
* @description
* Retrieves the `FormControl` instance from the provided `FormControlName` directive
*
* @param dir The `FormControlName` directive instance.
*/
getControl(dir: FormControlName): FormControl;
/**
* @description
* Removes the `FormControlName` instance from the internal list of directives
*
* @param dir The `FormControlName` directive instance.
*/
removeControl(dir: FormControlName): void;
/**
* Adds a new `FormGroupName` directive instance to the form.
*
* @param dir The `FormGroupName` directive instance.
*/
addFormGroup(dir: FormGroupName): void;
/**
* No-op method to remove the form group.
*
* @param dir The `FormGroupName` directive instance.
*/
removeFormGroup(dir: FormGroupName): void;
/**
* @description
* Retrieves the `FormGroup` for a provided `FormGroupName` directive instance
*
* @param dir The `FormGroupName` directive instance.
*/
getFormGroup(dir: FormGroupName): FormGroup;
/**
* Adds a new `FormArrayName` directive instance to the form.
*
* @param dir The `FormArrayName` directive instance.
*/
addFormArray(dir: FormArrayName): void;
/**
* No-op method to remove the form array.
*
* @param dir The `FormArrayName` directive instance.
*/
removeFormArray(dir: FormArrayName): void;
/**
* @description
* Retrieves the `FormArray` for a provided `FormArrayName` directive instance.
*
* @param dir The `FormArrayName` directive instance.
*/
getFormArray(dir: FormArrayName): FormArray;
/**
* Sets the new value for the provided `FormControlName` directive.
*
* @param dir The `FormControlName` directive instance.
* @param value The new value for the directive's control.
*/
updateModel(dir: FormControlName, value: any): void;
/**
* @description
* Method called with the "submit" event is triggered on the form.
* Triggers the `ngSubmit` emitter to emit the "submit" event as its payload.
*
* @param $event The "submit" event object
*/
onSubmit($event: Event): boolean;
/**
* @description
* Method called when the "reset" event is triggered on the form.
*/
onReset(): void;
/**
* @description
* Resets the form to an initial value and resets its submitted status.
*
* @param value The new value for the form.
*/
resetForm(value?: any): void;
private _updateRegistrations;
private _updateValidators;
private _checkFormPresent;
}
/**
* @description
*
* Syncs a nested `FormGroup` to a DOM element.
*
* This directive can only be used with a parent `FormGroupDirective`.
*
* It accepts the string name of the nested `FormGroup` to link, and
* looks for a `FormGroup` registered with that name in the parent
* `FormGroup` instance you passed into `FormGroupDirective`.
*
* Use nested form groups to validate a sub-group of a
* form separately from the rest or to group the values of certain
* controls into their own nested object.
*
* @see [Reactive Forms Guide](guide/reactive-forms)
*
* @usageNotes
*
* ### Access the group by name
*
* The following example uses the {@link AbstractControl#get get} method to access the
* associated `FormGroup`
*
* ```ts
* this.form.get('name');
* ```
*
* ### Access individual controls in the group
*
* The following example uses the {@link AbstractControl#get get} method to access
* individual controls within the group using dot syntax.
*
* ```ts
* this.form.get('name.first');
* ```
*
* ### Register a nested `FormGroup`.
*
* The following example registers a nested *name* `FormGroup` within an existing `FormGroup`,
* and provides methods to retrieve the nested `FormGroup` and individual controls.
*
* {@example forms/ts/nestedFormGroup/nested_form_group_example.ts region='Component'}
*
* @ngModule ReactiveFormsModule
* @publicApi
*/
export declare class FormGroupName extends AbstractFormGroupDirective implements OnInit, OnDestroy {
/**
* @description
* Tracks the name of the `FormGroup` bound to the directive. The name corresponds
* to a key in the parent `FormGroup` or `FormArray`.
*/
name: string;
constructor(parent: ControlContainer, validators: any[], asyncValidators: any[]);
}
declare type FormHooks = 'change' | 'blur' | 'submit';
/**
* Exports the required providers and directives for template-driven forms,
* making them available for import by NgModules that import this module.
*
* @see [Forms Guide](/guide/forms)
*
* @publicApi
*/
export declare class FormsModule {
/**
* @description
* Provides options for configuring the template-driven forms module.
*
* @param opts An object of configuration options
* * `warnOnDeprecatedNgFormSelector` Configures when to emit a warning when the deprecated
* `ngForm` selector is used.
*/
static withConfig(opts: {
/** @deprecated as of v6 */ warnOnDeprecatedNgFormSelector?: 'never' | 'once' | 'always';
}): ModuleWithProviders<FormsModule>;
}
/**
* A directive that adds max length validation to controls marked with the
* `maxlength` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.
*
* @see [Form Validation](guide/form-validation)
*
* @usageNotes
*
* ### Adding a maximum length validator
*
* The following example shows how to add a maximum length validator to an input attached to an
* ngModel binding.
*
* ```html
* <input name="firstName" ngModel maxlength="25">
* ```
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class MaxLengthValidator implements Validator, OnChanges {
private _validator;
private _onChange;
/**
* @description
* Tracks changes to the the maximum length bound to this directive.
*/
maxlength: string;
/**
* @description
* A lifecycle method called when the directive's inputs change. For internal use
* only.
*
* @param changes A object of key/value pairs for the set of changed inputs.
*/
ngOnChanges(changes: SimpleChanges): void;
/**
* @description
* Method that validates whether the value exceeds
* the maximum length requirement.
*/
validate(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Registers a callback function to call when the validator inputs change.
*
* @param fn The callback function
*/
registerOnValidatorChange(fn: () => void): void;
private _createValidator;
}
/**
* A directive that adds minimum length validation to controls marked with the
* `minlength` attribute. The directive is provided with the `NG_VALIDATORS` mult-provider list.
*
* @see [Form Validation](guide/form-validation)
*
* @usageNotes
*
* ### Adding a minimum length validator
*
* The following example shows how to add a minimum length validator to an input attached to an
* ngModel binding.
*
* ```html
* <input name="firstName" ngModel minlength="4">
* ```
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class MinLengthValidator implements Validator, OnChanges {
private _validator;
private _onChange;
/**
* @description
* Tracks changes to the the minimum length bound to this directive.
*/
minlength: string;
/**
* @description
* A lifecycle method called when the directive's inputs change. For internal use
* only.
*
* @param changes A object of key/value pairs for the set of changed inputs.
*/
ngOnChanges(changes: SimpleChanges): void;
/**
* @description
* Method that validates whether the value meets a minimum length
* requirement. Returns the validation result if enabled, otherwise null.
*/
validate(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Registers a callback function to call when the validator inputs change.
*
* @param fn The callback function
*/
registerOnValidatorChange(fn: () => void): void;
private _createValidator;
}
/**
* @description
* An `InjectionToken` for registering additional asynchronous validators used with `AbstractControl`s.
*
* @see `NG_VALIDATORS`
*
* @publicApi
*/
export declare const NG_ASYNC_VALIDATORS: InjectionToken<(Function | Validator)[]>;
/**
* @description
* An `InjectionToken` for registering additional synchronous validators used with `AbstractControl`s.
*
* @see `NG_ASYNC_VALIDATORS`
*
* @usageNotes
*
* ### Providing a custom validator
*
* The following example registers a custom validator directive. Adding the validator to the
* existing collection of validators requires the `multi: true` option.
*
* ```typescript
* @Directive({
* selector: '[customValidator]',
* providers: [{provide: NG_VALIDATORS, useExisting: CustomValidatorDirective, multi: true}]
* })
* class CustomValidatorDirective implements Validator {
* validate(control: AbstractControl): ValidationErrors | null {
* return { 'custom': true };
* }
* }
* ```
*
* @publicApi
*/
export declare const NG_VALIDATORS: InjectionToken<(Function | Validator)[]>;
/**
* Used to provide a `ControlValueAccessor` for form controls.
*
* See `DefaultValueAccessor` for how to implement one.
*
* @publicApi
*/
export declare const NG_VALUE_ACCESSOR: InjectionToken<ControlValueAccessor>;
/**
* @description
* A base class that all control `FormControl`-based directives extend. It binds a `FormControl`
* object to a DOM element.
*
* @publicApi
*/
export declare abstract class NgControl extends AbstractControlDirective {
/**
* @description
* The name for the control
*/
name: string | null;
/**
* @description
* The value accessor for the control
*/
valueAccessor: ControlValueAccessor | null;
/**
* @description
* The registered synchronous validator function for the control
*
* @throws An exception that this method is not implemented
*/
readonly validator: ValidatorFn | null;
/**
* @description
* The registered async validator function for the control
*
* @throws An exception that this method is not implemented
*/
readonly asyncValidator: AsyncValidatorFn | null;
/**
* @description
* The callback method to update the model from the view when requested
*
* @param newValue The new value for the view
*/
abstract viewToModelUpdate(newValue: any): void;
}
/**
* @description
* Directive automatically applied to Angular form controls that sets CSS classes
* based on control status.
*
* @usageNotes
*
* ### CSS classes applied
*
* The following classes are applied as the properties become true:
*
* * ng-valid
* * ng-invalid
* * ng-pending
* * ng-pristine
* * ng-dirty
* * ng-untouched
* * ng-touched
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class NgControlStatus extends ɵangular_packages_forms_forms_g {
constructor(cd: NgControl);
}
/**
* @description
* Directive automatically applied to Angular form groups that sets CSS classes
* based on control status (valid/invalid/dirty/etc).
*
* @see `NgControlStatus`
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class NgControlStatusGroup extends ɵangular_packages_forms_forms_g {
constructor(cd: ControlContainer);
}
/**
* @description
* Creates a top-level `FormGroup` instance and binds it to a form
* to track aggregate form value and validation status.
*
* As soon as you import the `FormsModule`, this directive becomes active by default on
* all `<form>` tags. You don't need to add a special selector.
*
* You optionally export the directive into a local template variable using `ngForm` as the key
* (ex: `#myForm="ngForm"`). This is optional, but useful. Many properties from the underlying
* `FormGroup` instance are duplicated on the directive itself, so a reference to it
* gives you access to the aggregate value and validity status of the form, as well as
* user interaction properties like `dirty` and `touched`.
*
* To register child controls with the form, use `NgModel` with a `name`
* attribute. You may use `NgModelGroup` to create sub-groups within the form.
*
* If necessary, listen to the directive's `ngSubmit` event to be notified when the user has
* triggered a form submission. The `ngSubmit` event emits the original form
* submission event.
*
* In template driven forms, all `<form>` tags are automatically tagged as `NgForm`.
* To import the `FormsModule` but skip its usage in some forms,
* for example, to use native HTML5 validation, add the `ngNoForm` and the `<form>`
* tags won't create an `NgForm` directive. In reactive forms, using `ngNoForm` is
* unnecessary because the `<form>` tags are inert. In that case, you would
* refrain from using the `formGroup` directive.
*
* @usageNotes
*
* ### Migrating from deprecated ngForm selector
*
* Support for using `ngForm` element selector has been deprecated in Angular v6 and will be removed
* in Angular v9.
*
* This has been deprecated to keep selectors consistent with other core Angular selectors,
* as element selectors are typically written in kebab-case.
*
* Now deprecated:
* ```html
* <ngForm #myForm="ngForm">
* ```
*
* After:
* ```html
* <ng-form #myForm="ngForm">
* ```
*
* ### Listening for form submission
*
* The following example shows how to capture the form values from the "ngSubmit" event.
*
* {@example forms/ts/simpleForm/simple_form_example.ts region='Component'}
*
* ### Setting the update options
*
* The following example shows you how to change the "updateOn" option from its default using
* ngFormOptions.
*
* ```html
* <form [ngFormOptions]="{updateOn: 'blur'}">
* <input name="one" ngModel> <!-- this ngModel will update on blur -->
* </form>
* ```
*
* @ngModule FormsModule
* @publicApi
*/
export declare class NgForm extends ControlContainer implements Form, AfterViewInit {
/**
* @description
* Returns whether the form submission has been triggered.
*/
readonly submitted: boolean;
private _directives;
/**
* @description
* The `FormGroup` instance created for this form.
*/
form: FormGroup;
/**
* @description
* Event emitter for the "ngSubmit" event
*/
ngSubmit: EventEmitter<{}>;
/**
* @description
* Tracks options for the `NgForm` instance.
*
* **updateOn**: Sets the default `updateOn` value for all child `NgModels` below it
* unless explicitly set by a child `NgModel` using `ngModelOptions`). Defaults to 'change'.
* Possible values: `'change'` | `'blur'` | `'submit'`.
*
*/
options: {
updateOn?: FormHooks;
};
constructor(validators: any[], asyncValidators: any[]);
/**
* @description
* Lifecycle method called after the view is initialized. For internal use only.
*/
ngAfterViewInit(): void;
/**
* @description
* The directive instance.
*/
readonly formDirective: Form;
/**
* @description
* The internal `FormGroup` instance.
*/
readonly control: FormGroup;
/**
* @description
* Returns an array representing the path to this group. Because this directive
* always lives at the top level of a form, it is always an empty array.
*/
readonly path: string[];
/**
* @description
* Returns a map of the controls in this group.
*/
readonly controls: {
[key: string]: AbstractControl;
};
/**
* @description
* Method that sets up the control directive in this group, re-calculates its value
* and validity, and adds the instance to the internal list of directives.
*
* @param dir The `NgModel` directive instance.
*/
addControl(dir: NgModel): void;
/**
* @description
* Retrieves the `FormControl` instance from the provided `NgModel` directive.
*
* @param dir The `NgModel` directive instance.
*/
getControl(dir: NgModel): FormControl;
/**
* @description
* Removes the `NgModel` instance from the internal list of directives
*
* @param dir The `NgModel` directive instance.
*/
removeControl(dir: NgModel): void;
/**
* @description
* Adds a new `NgModelGroup` directive instance to the form.
*
* @param dir The `NgModelGroup` directive instance.
*/
addFormGroup(dir: NgModelGroup): void;
/**
* @description
* Removes the `NgModelGroup` directive instance from the form.
*
* @param dir The `NgModelGroup` directive instance.
*/
removeFormGroup(dir: NgModelGroup): void;
/**
* @description
* Retrieves the `FormGroup` for a provided `NgModelGroup` directive instance
*
* @param dir The `NgModelGroup` directive instance.
*/
getFormGroup(dir: NgModelGroup): FormGroup;
/**
* Sets the new value for the provided `NgControl` directive.
*
* @param dir The `NgControl` directive instance.
* @param value The new value for the directive's control.
*/
updateModel(dir: NgControl, value: any): void;
/**
* @description
* Sets the value for this `FormGroup`.
*
* @param value The new value
*/
setValue(value: {
[key: string]: any;
}): void;
/**
* @description
* Method called when the "submit" event is triggered on the form.
* Triggers the `ngSubmit` emitter to emit the "submit" event as its payload.
*
* @param $event The "submit" event object
*/
onSubmit($event: Event): boolean;
/**
* @description
* Method called when the "reset" event is triggered on the form.
*/
onReset(): void;
/**
* @description
* Resets the form to an initial value and resets its submitted status.
*
* @param value The new value for the form.
*/
resetForm(value?: any): void;
private _setUpdateStrategy;
}
/**
* This directive is solely used to display warnings when the deprecated `ngForm` selector is used.
*
* @deprecated in Angular v6 and will be removed in Angular v9.
* @ngModule FormsModule
* @publicApi
*/
export declare class NgFormSelectorWarning {
constructor(ngFormWarning: string | null);
}
/**
* @description
* Creates a `FormControl` instance from a domain model and binds it
* to a form control element.
*
* The `FormControl` instance tracks the value, user interaction, and
* validation status of the control and keeps the view synced with the model. If used
* within a parent form, the directive also registers itself with the form as a child
* control.
*
* This directive is used by itself or as part of a larger form. Use the
* `ngModel` selector to activate it.
*
* It accepts a domain model as an optional `Input`. If you have a one-way binding
* to `ngModel` with `[]` syntax, changing the value of the domain model in the component
* class sets the value in the view. If you have a two-way binding with `[()]` syntax
* (also known as 'banana-box syntax'), the value in the UI always syncs back to
* the domain model in your class.
*
* To inspect the properties of the associated `FormControl` (like validity state),
* export the directive into a local template variable using `ngModel` as the key (ex: `#myVar="ngModel"`).
* You then access the control using the directive's `control` property,
* but most properties used (like `valid` and `dirty`) fall through to the control anyway for direct access.
* See a full list of properties directly available in `AbstractControlDirective`.
*
* @see `RadioControlValueAccessor`
* @see `SelectControlValueAccessor`
*
* @usageNotes
*
* ### Using ngModel on a standalone control
*
* The following examples show a simple standalone control using `ngModel`:
*
* {@example forms/ts/simpleNgModel/simple_ng_model_example.ts region='Component'}
*
* When using the `ngModel` within `<form>` tags, you'll also need to supply a `name` attribute
* so that the control can be registered with the parent form under that name.
*
* In the context of a parent form, it's often unnecessary to include one-way or two-way binding,
* as the parent form syncs the value for you. You access its properties by exporting it into a
* local template variable using `ngForm` such as (`#f="ngForm"`). Use the variable where
* needed on form submission.
*
* If you do need to populate initial values into your form, using a one-way binding for
* `ngModel` tends to be sufficient as long as you use the exported form's value rather
* than the domain model's value on submit.
*
* ### Using ngModel within a form
*
* The following example shows controls using `ngModel` within a form:
*
* {@example forms/ts/simpleForm/simple_form_example.ts region='Component'}
*
* ### Using a standalone ngModel within a group
*
* The following example shows you how to use a standalone ngModel control
* within a form. This controls the display of the form, but doesn't contain form data.
*
* ```html
* <form>
* <input name="login" ngModel placeholder="Login">
* <input type="checkbox" ngModel [ngModelOptions]="{standalone: true}"> Show more options?
* </form>
* <!-- form value: {login: ''} -->
* ```
*
* ### Setting the ngModel name attribute through options
*
* The following example shows you an alternate way to set the name attribute. The name attribute is used
* within a custom form component, and the name `@Input` property serves a different purpose.
*
* ```html
* <form>
* <my-person-control name="Nancy" ngModel [ngModelOptions]="{name: 'user'}">
* </my-person-control>
* </form>
* <!-- form value: {user: ''} -->
* ```
*
* @ngModule FormsModule
* @publicApi
*/
export declare class NgModel extends NgControl implements OnChanges, OnDestroy {
readonly control: FormControl;
/**
* @description
* Internal reference to the view model value.
*/
viewModel: any;
/**
* @description
* Tracks the name bound to the directive. The parent form
* uses this name as a key to retrieve this control's value.
*/
name: string;
/**
* @description
* Tracks whether the control is disabled.
*/
isDisabled: boolean;
/**
* @description
* Tracks the value bound to this directive.
*/
model: any;
/**
* @description
* Tracks the configuration options for this `ngModel` instance.
*
* **name**: An alternative to setting the name attribute on the form control element. See
* the [example](api/forms/NgModel#using-ngmodel-on-a-standalone-control) for using `NgModel`
* as a standalone control.
*
* **standalone**: When set to true, the `ngModel` will not register itself with its parent form,
* and acts as if it's not in the form. Defaults to false.
*
* **updateOn**: Defines the event upon which the form control value and validity update.
* Defaults to 'change'. Possible values: `'change'` | `'blur'` | `'submit'`.
*
*/
options: {
name?: string;
standalone?: boolean;
updateOn?: FormHooks;
};
/**
* @description
* Event emitter for producing the `ngModelChange` event after
* the view model updates.
*/
update: EventEmitter<{}>;
constructor(parent: ControlContainer, validators: Array<Validator | ValidatorFn>, asyncValidators: Array<AsyncValidator | AsyncValidatorFn>, valueAccessors: ControlValueAccessor[]);
/**
* @description
* A lifecycle method called when the directive's inputs change. For internal use
* only.
*
* @param changes A object of key/value pairs for the set of changed inputs.
*/
ngOnChanges(changes: SimpleChanges): void;
/**
* @description
* Lifecycle method called before the directive's instance is destroyed. For internal
* use only.
*/
ngOnDestroy(): void;
/**
* @description
* Returns an array that represents the path from the top-level form to this control.
* Each index is the string name of the control on that level.
*/
readonly path: string[];
/**
* @description
* The top-level directive for this control if present, otherwise null.
*/
readonly formDirective: any;
/**
* @description
* Synchronous validator function composed of all the synchronous validators
* registered with this directive.
*/
readonly validator: ValidatorFn | null;
/**
* @description
* Async validator function composed of all the async validators registered with this
* directive.
*/
readonly asyncValidator: AsyncValidatorFn | null;
/**
* @description
* Sets the new value for the view model and emits an `ngModelChange` event.
*
* @param newValue The new value emitted by `ngModelChange`.
*/
viewToModelUpdate(newValue: any): void;
private _setUpControl;
private _setUpdateStrategy;
private _isStandalone;
private _setUpStandalone;
private _checkForErrors;
private _checkParentType;
private _checkName;
private _updateValue;
private _updateDisabled;
}
/**
* @description
* Creates and binds a `FormGroup` instance to a DOM element.
*
* This directive can only be used as a child of `NgForm` (within `<form>` tags).
*
* Use this directive to validate a sub-group of your form separately from the
* rest of your form, or if some values in your domain model make more sense
* to consume together in a nested object.
*
* Provide a name for the sub-group and it will become the key
* for the sub-group in the form's full value. If you need direct access, export the directive into
* a local template variable using `ngModelGroup` (ex: `#myGroup="ngModelGroup"`).
*
* @usageNotes
*
* ### Consuming controls in a grouping
*
* The following example shows you how to combine controls together in a sub-group
* of the form.
*
* {@example forms/ts/ngModelGroup/ng_model_group_example.ts region='Component'}
*
* @ngModule FormsModule
* @publicApi
*/
export declare class NgModelGroup extends AbstractFormGroupDirective implements OnInit, OnDestroy {
/**
* @description
* Tracks the name of the `NgModelGroup` bound to the directive. The name corresponds
* to a key in the parent `NgForm`.
*/
name: string;
constructor(parent: ControlContainer, validators: any[], asyncValidators: any[]);
}
/**
* @description
* Marks `<option>` as dynamic, so Angular can be notified when options change.
*
* @see `SelectControlValueAccessor`
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class NgSelectOption implements OnDestroy {
private _element;
private _renderer;
private _select;
/**
* @description
* ID of the option element
*/
id: string;
constructor(_element: ElementRef, _renderer: Renderer2, _select: SelectControlValueAccessor);
/**
* @description
* Tracks the value bound to the option element. Unlike the value binding,
* ngValue supports binding to objects.
*/
ngValue: any;
/**
* @description
* Tracks simple string values bound to the option element.
* For objects, use the `ngValue` input binding.
*/
value: any;
/**
* @description
* Lifecycle method called before the directive's instance is destroyed. For internal use only.
*/
ngOnDestroy(): void;
}
/**
* @description
* The `ControlValueAccessor` for writing a number value and listening to number input changes.
* The value accessor is used by the `FormControlDirective`, `FormControlName`, and `NgModel`
* directives.
*
* @usageNotes
*
* ### Using a number input with a reactive form.
*
* The following example shows how to use a number input with a reactive form.
*
* ```ts
* const totalCountControl = new FormControl();
* ```
*
* ```
* <input type="number" [formControl]="totalCountControl">
* ```
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class NumberValueAccessor implements ControlValueAccessor {
private _renderer;
private _elementRef;
/**
* @description
* The registered callback function called when a change or input event occurs on the input
* element.
*/
onChange: (_: any) => void;
/**
* @description
* The registered callback function called when a blur event occurs on the input element.
*/
onTouched: () => void;
constructor(_renderer: Renderer2, _elementRef: ElementRef);
/**
* Sets the "value" property on the input element.
*
* @param value The checked value
*/
writeValue(value: number): void;
/**
* @description
* Registers a function called when the control value changes.
*
* @param fn The callback function
*/
registerOnChange(fn: (_: number | null) => void): void;
/**
* @description
* Registers a function called when the control is touched.
*
* @param fn The callback function
*/
registerOnTouched(fn: () => void): void;
/**
* Sets the "disabled" property on the input element.
*
* @param isDisabled The disabled value
*/
setDisabledState(isDisabled: boolean): void;
}
/**
* @description
* A directive that adds regex pattern validation to controls marked with the
* `pattern` attribute. The regex must match the entire control value.
* The directive is provided with the `NG_VALIDATORS` multi-provider list.
*
* @see [Form Validation](guide/form-validation)
*
* @usageNotes
*
* ### Adding a pattern validator
*
* The following example shows how to add a pattern validator to an input attached to an
* ngModel binding.
*
* ```html
* <input name="firstName" ngModel pattern="[a-zA-Z ]*">
* ```
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class PatternValidator implements Validator, OnChanges {
private _validator;
private _onChange;
/**
* @description
* Tracks changes to the pattern bound to this directive.
*/
pattern: string | RegExp;
/**
* @description
* A lifecycle method called when the directive's inputs change. For internal use
* only.
*
* @param changes A object of key/value pairs for the set of changed inputs.
*/
ngOnChanges(changes: SimpleChanges): void;
/**
* @description
* Method that validates whether the value matches the
* the pattern requirement.
*/
validate(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Registers a callback function to call when the validator inputs change.
*
* @param fn The callback function
*/
registerOnValidatorChange(fn: () => void): void;
private _createValidator;
}
/**
* @description
* The `ControlValueAccessor` for writing radio control values and listening to radio control
* changes. The value accessor is used by the `FormControlDirective`, `FormControlName`, and
* `NgModel` directives.
*
* @usageNotes
*
* ### Using radio buttons with reactive form directives
*
* The follow example shows how to use radio buttons in a reactive form. When using radio buttons in
* a reactive form, radio buttons in the same group should have the same `formControlName`.
* Providing a `name` attribute is optional.
*
* {@example forms/ts/reactiveRadioButtons/reactive_radio_button_example.ts region='Reactive'}
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class RadioControlValueAccessor implements ControlValueAccessor, OnDestroy, OnInit {
private _renderer;
private _elementRef;
private _registry;
private _injector;
/**
* @description
* The registered callback function called when a change event occurs on the input element.
*/
onChange: () => void;
/**
* @description
* The registered callback function called when a blur event occurs on the input element.
*/
onTouched: () => void;
/**
* @description
* Tracks the name of the radio input element.
*/
name: string;
/**
* @description
* Tracks the name of the `FormControl` bound to the directive. The name corresponds
* to a key in the parent `FormGroup` or `FormArray`.
*/
formControlName: string;
/**
* @description
* Tracks the value of the radio input element
*/
value: any;
constructor(_renderer: Renderer2, _elementRef: ElementRef, _registry: ɵangular_packages_forms_forms_o, _injector: Injector);
/**
* @description
* A lifecycle method called when the directive is initialized. For internal use only.
*
* @param changes A object of key/value pairs for the set of changed inputs.
*/
ngOnInit(): void;
/**
* @description
* Lifecycle method called before the directive's instance is destroyed. For internal use only.
*
* @param changes A object of key/value pairs for the set of changed inputs.
*/
ngOnDestroy(): void;
/**
* @description
* Sets the "checked" property value on the radio input element.
*
* @param value The checked value
*/
writeValue(value: any): void;
/**
* @description
* Registers a function called when the control value changes.
*
* @param fn The callback function
*/
registerOnChange(fn: (_: any) => {}): void;
/**
* Sets the "value" on the radio input element and unchecks it.
*
* @param value
*/
fireUncheck(value: any): void;
/**
* @description
* Registers a function called when the control is touched.
*
* @param fn The callback function
*/
registerOnTouched(fn: () => {}): void;
/**
* Sets the "disabled" property on the input element.
*
* @param isDisabled The disabled value
*/
setDisabledState(isDisabled: boolean): void;
private _checkName;
private _throwNameError;
}
/**
* @description
* The `ControlValueAccessor` for writing a range value and listening to range input changes.
* The value accessor is used by the `FormControlDirective`, `FormControlName`, and `NgModel`
* directives.
*
* @usageNotes
*
* ### Using a range input with a reactive form
*
* The following example shows how to use a range input with a reactive form.
*
* ```ts
* const ageControl = new FormControl();
* ```
*
* ```
* <input type="range" [formControl]="ageControl">
* ```
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class RangeValueAccessor implements ControlValueAccessor {
private _renderer;
private _elementRef;
/**
* @description
* The registered callback function called when a change or input event occurs on the input
* element.
*/
onChange: (_: any) => void;
/**
* @description
* The registered callback function called when a blur event occurs on the input element.
*/
onTouched: () => void;
constructor(_renderer: Renderer2, _elementRef: ElementRef);
/**
* Sets the "value" property on the input element.
*
* @param value The checked value
*/
writeValue(value: any): void;
/**
* @description
* Registers a function called when the control value changes.
*
* @param fn The callback function
*/
registerOnChange(fn: (_: number | null) => void): void;
/**
* @description
* Registers a function called when the control is touched.
*
* @param fn The callback function
*/
registerOnTouched(fn: () => void): void;
/**
* Sets the "disabled" property on the range input element.
*
* @param isDisabled The disabled value
*/
setDisabledState(isDisabled: boolean): void;
}
/**
* Exports the required infrastructure and directives for reactive forms,
* making them available for import by NgModules that import this module.
* @see [Forms](guide/reactive-forms)
*
* @see [Reactive Forms Guide](/guide/reactive-forms)
*
* @publicApi
*/
export declare class ReactiveFormsModule {
/**
* @description
* Provides options for configuring the reactive forms module.
*
* @param opts An object of configuration options
* * `warnOnNgModelWithFormControl` Configures when to emit a warning when an `ngModel`
* binding is used with reactive form directives.
*/
static withConfig(opts: {
/** @deprecated as of v6 */ warnOnNgModelWithFormControl: 'never' | 'once' | 'always';
}): ModuleWithProviders<ReactiveFormsModule>;
}
/**
* @description
* A directive that adds the `required` validator to any controls marked with the
* `required` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.
*
* @see [Form Validation](guide/form-validation)
*
* @usageNotes
*
* ### Adding a required validator using template-driven forms
*
* ```
* <input name="fullName" ngModel required>
* ```
*
* @ngModule FormsModule
* @ngModule ReactiveFormsModule
* @publicApi
*/
export declare class RequiredValidator implements Validator {
private _required;
private _onChange;
/**
* @description
* Tracks changes to the required attribute bound to this directive.
*/
required: boolean | string;
/**
* @description
* Method that validates whether the control is empty.
* Returns the validation result if enabled, otherwise null.
*/
validate(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Registers a callback function to call when the validator inputs change.
*
* @param fn The callback function
*/
registerOnValidatorChange(fn: () => void): void;
}
/**
* @description
* The `ControlValueAccessor` for writing select control values and listening to select control
* changes. The value accessor is used by the `FormControlDirective`, `FormControlName`, and
* `NgModel` directives.
*
* @usageNotes
*
* ### Using select controls in a reactive form
*
* The following examples show how to use a select control in a reactive form.
*
* {@example forms/ts/reactiveSelectControl/reactive_select_control_example.ts region='Component'}
*
* ### Using select controls in a template-driven form
*
* To use a select in a template-driven form, simply add an `ngModel` and a `name`
* attribute to the main `<select>` tag.
*
* {@example forms/ts/selectControl/select_control_example.ts region='Component'}
*
* ### Customizing option selection
*
* Angular uses object identity to select option. It's possible for the identities of items
* to change while the data does not. This can happen, for example, if the items are produced
* from an RPC to the server, and that RPC is re-run. Even if the data hasn't changed, the
* second response will produce objects with different identities.
*
* To customize the default option comparison algorithm, `<select>` supports `compareWith` input.
* `compareWith` takes a **function** which has two arguments: `option1` and `option2`.
* If `compareWith` is given, Angular selects option by the return value of the function.
*
* ```ts
* const selectedCountriesControl = new FormControl();
* ```
*
* ```
* <select [compareWith]="compareFn" [formControl]="selectedCountriesControl">
* <option *ngFor="let country of countries" [ngValue]="country">
* {{country.name}}
* </option>
* </select>
*
* compareFn(c1: Country, c2: Country): boolean {
* return c1 && c2 ? c1.id === c2.id : c1 === c2;
* }
* ```
*
* **Note:** We listen to the 'change' event because 'input' events aren't fired
* for selects in Firefox and IE:
* https://bugzilla.mozilla.org/show_bug.cgi?id=1024350
* https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/4660045/
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class SelectControlValueAccessor implements ControlValueAccessor {
private _renderer;
private _elementRef;
value: any;
/**
* @description
* The registered callback function called when a change event occurs on the input element.
*/
onChange: (_: any) => void;
/**
* @description
* The registered callback function called when a blur event occurs on the input element.
*/
onTouched: () => void;
/**
* @description
* Tracks the option comparison algorithm for tracking identities when
* checking for changes.
*/
compareWith: (o1: any, o2: any) => boolean;
private _compareWith;
constructor(_renderer: Renderer2, _elementRef: ElementRef);
/**
* Sets the "value" property on the input element. The "selectedIndex"
* property is also set if an ID is provided on the option element.
*
* @param value The checked value
*/
writeValue(value: any): void;
/**
* @description
* Registers a function called when the control value changes.
*
* @param fn The callback function
*/
registerOnChange(fn: (value: any) => any): void;
/**
* @description
* Registers a function called when the control is touched.
*
* @param fn The callback function
*/
registerOnTouched(fn: () => any): void;
/**
* Sets the "disabled" property on the select input element.
*
* @param isDisabled The disabled value
*/
setDisabledState(isDisabled: boolean): void;
}
/**
* @description
* The `ControlValueAccessor` for writing multi-select control values and listening to multi-select control
* changes. The value accessor is used by the `FormControlDirective`, `FormControlName`, and `NgModel`
* directives.
*
* @see `SelectControlValueAccessor`
*
* @usageNotes
*
* ### Using a multi-select control
*
* The follow example shows you how to use a multi-select control with a reactive form.
*
* ```ts
* const countryControl = new FormControl();
* ```
*
* ```
* <select multiple name="countries" [formControl]="countryControl">
* <option *ngFor="let country of countries" [ngValue]="country">
* {{ country.name }}
* </option>
* </select>
* ```
*
* ### Customizing option selection
*
* To customize the default option comparison algorithm, `<select>` supports `compareWith` input.
* See the `SelectControlValueAccessor` for usage.
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
export declare class SelectMultipleControlValueAccessor implements ControlValueAccessor {
private _renderer;
private _elementRef;
/**
* @description
* The current value
*/
value: any;
/**
* @description
* The registered callback function called when a change event occurs on the input element.
*/
onChange: (_: any) => void;
/**
* @description
* The registered callback function called when a blur event occurs on the input element.
*/
onTouched: () => void;
/**
* @description
* Tracks the option comparison algorithm for tracking identities when
* checking for changes.
*/
compareWith: (o1: any, o2: any) => boolean;
private _compareWith;
constructor(_renderer: Renderer2, _elementRef: ElementRef);
/**
* @description
* Sets the "value" property on one or of more
* of the select's options.
*
* @param value The value
*/
writeValue(value: any): void;
/**
* @description
* Registers a function called when the control value changes
* and writes an array of the selected options.
*
* @param fn The callback function
*/
registerOnChange(fn: (value: any) => any): void;
/**
* @description
* Registers a function called when the control is touched.
*
* @param fn The callback function
*/
registerOnTouched(fn: () => any): void;
/**
* Sets the "disabled" property on the select input element.
*
* @param isDisabled The disabled value
*/
setDisabledState(isDisabled: boolean): void;
}
/**
* @description
* Defines the map of errors returned from failed validation checks.
*
* @publicApi
*/
export declare type ValidationErrors = {
[key: string]: any;
};
/**
* @description
* An interface implemented by classes that perform synchronous validation.
*
* @usageNotes
*
* ### Provide a custom validator
*
* The following example implements the `Validator` interface to create a
* validator directive with a custom error key.
*
* ```typescript
* @Directive({
* selector: '[customValidator]',
* providers: [{provide: NG_VALIDATORS, useExisting: CustomValidatorDirective, multi: true}]
* })
* class CustomValidatorDirective implements Validator {
* validate(control: AbstractControl): ValidationErrors|null {
* return {'custom': true};
* }
* }
* ```
*
* @publicApi
*/
export declare interface Validator {
/**
* @description
* Method that performs synchronous validation against the provided control.
*
* @param control The control to validate against.
*
* @returns A map of validation errors if validation fails,
* otherwise null.
*/
validate(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Registers a callback function to call when the validator inputs change.
*
* @param fn The callback function
*/
registerOnValidatorChange?(fn: () => void): void;
}
/**
* @description
* A function that receives a control and synchronously returns a map of
* validation errors if present, otherwise null.
*
* @publicApi
*/
export declare interface ValidatorFn {
(control: AbstractControl): ValidationErrors | null;
}
/**
* @description
* Provides a set of built-in validators that can be used by form controls.
*
* A validator is a function that processes a `FormControl` or collection of
* controls and returns an error map or null. A null map means that validation has passed.
*
* @see [Form Validation](/guide/form-validation)
*
* @publicApi
*/
export declare class Validators {
/**
* @description
* Validator that requires the control's value to be greater than or equal to the provided number.
* The validator exists only as a function and not as a directive.
*
* @usageNotes
*
* ### Validate against a minimum of 3
*
* ```typescript
* const control = new FormControl(2, Validators.min(3));
*
* console.log(control.errors); // {min: {min: 3, actual: 2}}
* ```
*
* @returns A validator function that returns an error map with the
* `min` property if the validation check fails, otherwise `null`.
*
*/
static min(min: number): ValidatorFn;
/**
* @description
* Validator that requires the control's value to be less than or equal to the provided number.
* The validator exists only as a function and not as a directive.
*
* @usageNotes
*
* ### Validate against a maximum of 15
*
* ```typescript
* const control = new FormControl(16, Validators.max(15));
*
* console.log(control.errors); // {max: {max: 15, actual: 16}}
* ```
*
* @returns A validator function that returns an error map with the
* `max` property if the validation check fails, otherwise `null`.
*
*/
static max(max: number): ValidatorFn;
/**
* @description
* Validator that requires the control have a non-empty value.
*
* @usageNotes
*
* ### Validate that the field is non-empty
*
* ```typescript
* const control = new FormControl('', Validators.required);
*
* console.log(control.errors); // {required: true}
* ```
*
* @returns An error map with the `required` property
* if the validation check fails, otherwise `null`.
*
*/
static required(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Validator that requires the control's value be true. This validator is commonly
* used for required checkboxes.
*
* @usageNotes
*
* ### Validate that the field value is true
*
* ```typescript
* const control = new FormControl('', Validators.requiredTrue);
*
* console.log(control.errors); // {required: true}
* ```
*
* @returns An error map that contains the `required` property
* set to `true` if the validation check fails, otherwise `null`.
*/
static requiredTrue(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Validator that requires the control's value pass an email validation test.
*
* @usageNotes
*
* ### Validate that the field matches a valid email pattern
*
* ```typescript
* const control = new FormControl('bad@', Validators.email);
*
* console.log(control.errors); // {email: true}
* ```
*
* @returns An error map with the `email` property
* if the validation check fails, otherwise `null`.
*
*/
static email(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Validator that requires the length of the control's value to be greater than or equal
* to the provided minimum length. This validator is also provided by default if you use the
* the HTML5 `minlength` attribute.
*
* @usageNotes
*
* ### Validate that the field has a minimum of 3 characters
*
* ```typescript
* const control = new FormControl('ng', Validators.minLength(3));
*
* console.log(control.errors); // {minlength: {requiredLength: 3, actualLength: 2}}
* ```
*
* ```html
* <input minlength="5">
* ```
*
* @returns A validator function that returns an error map with the
* `minlength` if the validation check fails, otherwise `null`.
*/
static minLength(minLength: number): ValidatorFn;
/**
* @description
* Validator that requires the length of the control's value to be less than or equal
* to the provided maximum length. This validator is also provided by default if you use the
* the HTML5 `maxlength` attribute.
*
* @usageNotes
*
* ### Validate that the field has maximum of 5 characters
*
* ```typescript
* const control = new FormControl('Angular', Validators.maxLength(5));
*
* console.log(control.errors); // {maxlength: {requiredLength: 5, actualLength: 7}}
* ```
*
* ```html
* <input maxlength="5">
* ```
*
* @returns A validator function that returns an error map with the
* `maxlength` property if the validation check fails, otherwise `null`.
*/
static maxLength(maxLength: number): ValidatorFn;
/**
* @description
* Validator that requires the control's value to match a regex pattern. This validator is also
* provided by default if you use the HTML5 `pattern` attribute.
*
* Note that if a Regexp is provided, the Regexp is used as is to test the values. On the other
* hand, if a string is passed, the `^` character is prepended and the `$` character is
* appended to the provided string (if not already present), and the resulting regular
* expression is used to test the values.
*
* @usageNotes
*
* ### Validate that the field only contains letters or spaces
*
* ```typescript
* const control = new FormControl('1', Validators.pattern('[a-zA-Z ]*'));
*
* console.log(control.errors); // {pattern: {requiredPattern: '^[a-zA-Z ]*$', actualValue: '1'}}
* ```
*
* ```html
* <input pattern="[a-zA-Z ]*">
* ```
*
* @returns A validator function that returns an error map with the
* `pattern` property if the validation check fails, otherwise `null`.
*/
static pattern(pattern: string | RegExp): ValidatorFn;
/**
* @description
* Validator that performs no operation.
*/
static nullValidator(control: AbstractControl): ValidationErrors | null;
/**
* @description
* Compose multiple validators into a single function that returns the union
* of the individual error maps for the provided control.
*
* @returns A validator function that returns an error map with the
* merged error maps of the validators if the validation check fails, otherwise `null`.
*/
static compose(validators: null): null;
static compose(validators: (ValidatorFn | null | undefined)[]): ValidatorFn | null;
/**
* @description
* Compose multiple async validators into a single function that returns the union
* of the individual error objects for the provided control.
*
* @returns A validator function that returns an error map with the
* merged error objects of the async validators if the validation check fails, otherwise `null`.
*/
static composeAsync(validators: (AsyncValidatorFn | null)[]): AsyncValidatorFn | null;
}
/**
* @publicApi
*/
export declare const VERSION: Version;
export declare const ɵangular_packages_forms_forms_a: Type<any>[];
export declare const ɵangular_packages_forms_forms_b: Type<any>[];
/**
* @description
* Provider which adds `RequiredValidator` to the `NG_VALIDATORS` multi-provider list.
*/
export declare const ɵangular_packages_forms_forms_ba: StaticProvider;
/**
* @description
* Provider which adds `CheckboxRequiredValidator` to the `NG_VALIDATORS` multi-provider list.
*/
export declare const ɵangular_packages_forms_forms_bb: StaticProvider;
/**
* @description
* Provider which adds `EmailValidator` to the `NG_VALIDATORS` multi-provider list.
*/
export declare const ɵangular_packages_forms_forms_bc: any;
/**
* @description
* Provider which adds `MinLengthValidator` to the `NG_VALIDATORS` multi-provider list.
*/
export declare const ɵangular_packages_forms_forms_bd: any;
/**
* @description
* Provider which adds `MaxLengthValidator` to the `NG_VALIDATORS` multi-provider list.
*/
export declare const ɵangular_packages_forms_forms_be: any;
/**
* @description
* Provider which adds `PatternValidator` to the `NG_VALIDATORS` multi-provider list.
*/
export declare const ɵangular_packages_forms_forms_bf: any;
export declare const ɵangular_packages_forms_forms_c: Type<any>[];
export declare const ɵangular_packages_forms_forms_e: any;
export declare const ɵangular_packages_forms_forms_f: any;
export declare class ɵangular_packages_forms_forms_g {
private _cd;
constructor(cd: AbstractControlDirective);
readonly ngClassUntouched: boolean;
readonly ngClassTouched: boolean;
readonly ngClassPristine: boolean;
readonly ngClassDirty: boolean;
readonly ngClassValid: boolean;
readonly ngClassInvalid: boolean;
readonly ngClassPending: boolean;
}
export declare const ɵangular_packages_forms_forms_h: {
'[class.ng-untouched]': string;
'[class.ng-touched]': string;
'[class.ng-pristine]': string;
'[class.ng-dirty]': string;
'[class.ng-valid]': string;
'[class.ng-invalid]': string;
'[class.ng-pending]': string;
};
export declare const ɵangular_packages_forms_forms_i: any;
/**
* @description
* `InjectionToken` to provide to turn off the warning when using 'ngForm' deprecated selector.
*/
export declare const ɵangular_packages_forms_forms_j: InjectionToken<{}>;
export declare const ɵangular_packages_forms_forms_k: any;
export declare const ɵangular_packages_forms_forms_l: any;
export declare const ɵangular_packages_forms_forms_m: any;
export declare const ɵangular_packages_forms_forms_n: any;
/**
* @description
* Class used by Angular to track radio buttons. For internal use only.
*/
export declare class ɵangular_packages_forms_forms_o {
private _accessors;
/**
* @description
* Adds a control to the internal registry. For internal use only.
*/
add(control: NgControl, accessor: RadioControlValueAccessor): void;
/**
* @description
* Removes a control from the internal registry. For internal use only.
*/
remove(accessor: RadioControlValueAccessor): void;
/**
* @description
* Selects a radio button. For internal use only.
*/
select(accessor: RadioControlValueAccessor): void;
private _isSameGroup;
}
export declare const ɵangular_packages_forms_forms_p: StaticProvider;
/**
* Token to provide to turn off the ngModel warning on formControl and formControlName.
*/
export declare const ɵangular_packages_forms_forms_q: InjectionToken<{}>;
export declare const ɵangular_packages_forms_forms_r: any;
export declare const ɵangular_packages_forms_forms_s: any;
export declare const ɵangular_packages_forms_forms_t: any;
export declare const ɵangular_packages_forms_forms_u: any;
export declare const ɵangular_packages_forms_forms_v: any;
export declare const ɵangular_packages_forms_forms_w: StaticProvider;
export declare const ɵangular_packages_forms_forms_x: StaticProvider;
/**
* Internal module used for sharing directives between FormsModule and ReactiveFormsModule
*/
declare class ɵInternalFormsSharedModule {
}
export { ɵInternalFormsSharedModule }
export { ɵInternalFormsSharedModule as ɵangular_packages_forms_forms_d }
/**
* @description
*
* Adds `novalidate` attribute to all forms by default.
*
* `novalidate` is used to disable browser's native form validation.
*
* If you want to use native validation with Angular forms, just add `ngNativeValidate` attribute:
*
* ```
* <form ngNativeValidate></form>
* ```
*
* @publicApi
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
*/
declare class ɵNgNoValidate {
}
export { ɵNgNoValidate }
export { ɵNgNoValidate as ɵangular_packages_forms_forms_z }
/**
* @description
* Marks `<option>` as dynamic, so Angular can be notified when options change.
*
* @see `SelectMultipleControlValueAccessor`
*
* @ngModule ReactiveFormsModule
* @ngModule FormsModule
* @publicApi
*/
declare class ɵNgSelectMultipleOption implements OnDestroy {
private _element;
private _renderer;
private _select;
id: string;
constructor(_element: ElementRef, _renderer: Renderer2, _select: SelectMultipleControlValueAccessor);
/**
* @description
* Tracks the value bound to the option element. Unlike the value binding,
* ngValue supports binding to objects.
*/
ngValue: any;
/**
* @description
* Tracks simple string values bound to the option element.
* For objects, use the `ngValue` input binding.
*/
value: any;
/**
* @description
* Lifecycle method called before the directive's instance is destroyed. For internal use only.
*/
ngOnDestroy(): void;
}
export { ɵNgSelectMultipleOption }
export { ɵNgSelectMultipleOption as ɵangular_packages_forms_forms_y }
export { }