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fix(material/form-field): support signal forms in MatFormFieldControl #33850

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Merged
crisbeto merged 2 commits into from
Sep 22, 2026
Merged

fix(material/form-field): support signal forms in MatFormFieldControl #33850

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4be0ab4
fix(material/form-field): support signal forms in MatFormFieldControl
crisbeto Sep 22, 2026
b7d3eba
docs: redo custom form field guide for signal forms
crisbeto Sep 22, 2026
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1 change: 1 addition & 0 deletions goldens/material/chips/index.api.md
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Expand Up @@ -29,6 +29,7 @@ import { OnChanges } from '@angular/core';
import { OnDestroy } from '@angular/core';
import { OnInit } from '@angular/core';
import { QueryList } from '@angular/core';
import { Signal } from '@angular/core';
import { Subject } from 'rxjs';

// @public
Expand Down
1 change: 1 addition & 0 deletions goldens/material/datepicker/index.api.md
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Expand Up @@ -35,6 +35,7 @@ import { OnDestroy } from '@angular/core';
import { OnInit } from '@angular/core';
import { Portal } from '@angular/cdk/portal';
import { ScrollStrategy } from '@angular/cdk/overlay';
import { Signal } from '@angular/core';
import { SimpleChanges } from '@angular/core';
import { Subject } from 'rxjs';
import { TemplatePortal } from '@angular/cdk/portal';
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32 changes: 18 additions & 14 deletions goldens/material/form-field/index.api.md
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Expand Up @@ -10,6 +10,7 @@ import { AfterContentInit } from '@angular/core';
import { AfterViewInit } from '@angular/core';
import { BooleanInput } from '@angular/cdk/coercion';
import { ElementRef } from '@angular/core';
import { Field } from '@angular/forms/signals';
import * as i0 from '@angular/core';
import * as i1 from '@angular/cdk/observers';
import * as i2 from '@angular/cdk/bidi';
Expand All @@ -18,6 +19,7 @@ import { NgControl } from '@angular/forms';
import { Observable } from 'rxjs';
import { OnDestroy } from '@angular/core';
import { QueryList } from '@angular/core';
import { Signal } from '@angular/core';

// @public
export type FloatLabelType = 'always' | 'auto';
Expand Down Expand Up @@ -79,11 +81,11 @@ export class MatFormField implements FloatingLabelParent, AfterContentInit, Afte
// (undocumented)
_formFieldControl: MatFormFieldControl_2<any>;
getConnectedOverlayOrigin(): ElementRef;
getLabelId: i0.Signal<string | null>;
getLabelId: Signal<string | null>;
_getSubscriptMessageType(): 'error' | 'hint';
_handleLabelResized(): void;
// (undocumented)
_hasFloatingLabel: i0.Signal<boolean>;
_hasFloatingLabel: Signal<boolean>;
// (undocumented)
_hasIconPrefix: boolean;
// (undocumented)
Expand Down Expand Up @@ -124,7 +126,7 @@ export class MatFormField implements FloatingLabelParent, AfterContentInit, Afte
_prefixChildren: QueryList<MatPrefix>;
_refreshOutlineNotchWidth(): void;
_shouldAlwaysFloat(): boolean;
_shouldForward(prop: keyof AbstractControlDirective): boolean;
_shouldForward(prop: 'valid' | 'dirty' | 'touched' | 'pending' | 'untouched' | 'pristine' | 'invalid'): boolean;
// (undocumented)
_shouldLabelFloat(): boolean;
get subscriptSizing(): SubscriptSizing;
Expand All @@ -138,6 +140,8 @@ export class MatFormField implements FloatingLabelParent, AfterContentInit, Afte
// (undocumented)
_textSuffixContainer: ElementRef<HTMLElement>;
// (undocumented)
protected _unwrapMaybeSignal<T>(value: T | Signal<T>): T;
// (undocumented)
static ɵcmp: i0.ɵɵComponentDeclaration<MatFormField, "mat-form-field", ["matFormField"], { "hideRequiredMarker": { "alias": "hideRequiredMarker"; "required": false; }; "color": { "alias": "color"; "required": false; }; "floatLabel": { "alias": "floatLabel"; "required": false; }; "appearance": { "alias": "appearance"; "required": false; }; "subscriptSizing": { "alias": "subscriptSizing"; "required": false; }; "hintLabel": { "alias": "hintLabel"; "required": false; }; }, {}, ["_labelChild", "_formFieldControl", "_prefixChildren", "_suffixChildren", "_errorChildren", "_hintChildren"], ["mat-label", "[matPrefix], [matIconPrefix]", "[matTextPrefix]", "*", "[matTextSuffix]", "[matSuffix], [matIconSuffix]", "mat-error, [matError]", "mat-hint:not([align='end'])", "mat-hint[align='end']"], true, never>;
// (undocumented)
static ɵfac: i0.ɵɵFactoryDeclaration<MatFormField, never>;
Expand All @@ -148,24 +152,24 @@ export type MatFormFieldAppearance = 'fill' | 'outline';

// @public
export abstract class MatFormFieldControl<T> {
readonly autofilled?: boolean;
readonly autofilled?: boolean | Signal<boolean>;
readonly controlType?: string;
readonly describedByIds?: string[];
readonly disableAutomaticLabeling?: boolean;
readonly disabled: boolean;
readonly empty: boolean;
readonly errorState: boolean;
readonly focused: boolean;
readonly disabled: boolean | Signal<boolean>;
readonly empty: boolean | Signal<boolean>;
readonly errorState: boolean | Signal<boolean>;
readonly focused: boolean | Signal<boolean>;
readonly id: string;
readonly ngControl: NgControl | AbstractControlDirective | null;
readonly ngField?: Field<T> | null;
abstract onContainerClick(event: MouseEvent): void;
readonly placeholder: string;
readonly required: boolean;
readonly required: boolean | Signal<boolean>;
abstract setDescribedByIds(ids: string[]): void;
readonly shouldLabelFloat: boolean;
readonly stateChanges: Observable<void>;
readonly userAriaDescribedBy?: string;
value: T | null;
readonly shouldLabelFloat: boolean | Signal<boolean>;
readonly stateChanges?: Observable<void> | null;
readonly userAriaDescribedBy?: string | Signal<string>;
value?: any;
// (undocumented)
static ɵdir: i0.ɵɵDirectiveDeclaration<MatFormFieldControl<any>, never, never, {}, {}, never, never, true, never>;
// (undocumented)
Expand Down
9 changes: 6 additions & 3 deletions goldens/material/input/index.api.md
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Expand Up @@ -26,6 +26,7 @@ import { OnChanges } from '@angular/core';
import { OnDestroy } from '@angular/core';
import { Platform } from '@angular/cdk/platform';
import { QueryList } from '@angular/core';
import { Signal } from '@angular/core';
import { Subject } from 'rxjs';
import { WritableSignal } from '@angular/core';

Expand Down Expand Up @@ -73,11 +74,11 @@ export class MatFormField implements FloatingLabelParent, AfterContentInit, Afte
// (undocumented)
_formFieldControl: MatFormFieldControl<any>;
getConnectedOverlayOrigin(): ElementRef;
getLabelId: i0.Signal<string | null>;
getLabelId: Signal<string | null>;
_getSubscriptMessageType(): 'error' | 'hint';
_handleLabelResized(): void;
// (undocumented)
_hasFloatingLabel: i0.Signal<boolean>;
_hasFloatingLabel: Signal<boolean>;
// (undocumented)
_hasIconPrefix: boolean;
// (undocumented)
Expand Down Expand Up @@ -118,7 +119,7 @@ export class MatFormField implements FloatingLabelParent, AfterContentInit, Afte
_prefixChildren: QueryList<MatPrefix>;
_refreshOutlineNotchWidth(): void;
_shouldAlwaysFloat(): boolean;
_shouldForward(prop: keyof AbstractControlDirective): boolean;
_shouldForward(prop: 'valid' | 'dirty' | 'touched' | 'pending' | 'untouched' | 'pristine' | 'invalid'): boolean;
// (undocumented)
_shouldLabelFloat(): boolean;
get subscriptSizing(): SubscriptSizing;
Expand All @@ -132,6 +133,8 @@ export class MatFormField implements FloatingLabelParent, AfterContentInit, Afte
// (undocumented)
_textSuffixContainer: ElementRef<HTMLElement>;
// (undocumented)
protected _unwrapMaybeSignal<T>(value: T | Signal<T>): T;
// (undocumented)
static ɵcmp: i0.ɵɵComponentDeclaration<MatFormField, "mat-form-field", ["matFormField"], { "hideRequiredMarker": { "alias": "hideRequiredMarker"; "required": false; }; "color": { "alias": "color"; "required": false; }; "floatLabel": { "alias": "floatLabel"; "required": false; }; "appearance": { "alias": "appearance"; "required": false; }; "subscriptSizing": { "alias": "subscriptSizing"; "required": false; }; "hintLabel": { "alias": "hintLabel"; "required": false; }; }, {}, ["_labelChild", "_formFieldControl", "_prefixChildren", "_suffixChildren", "_errorChildren", "_hintChildren"], ["mat-label", "[matPrefix], [matIconPrefix]", "[matTextPrefix]", "*", "[matTextSuffix]", "[matSuffix], [matIconSuffix]", "mat-error, [matError]", "mat-hint:not([align='end'])", "mat-hint[align='end']"], true, never>;
// (undocumented)
static ɵfac: i0.ɵɵFactoryDeclaration<MatFormField, never>;
Expand Down
1 change: 1 addition & 0 deletions goldens/material/paginator/index.api.md
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@ import { OverlayRef } from '@angular/cdk/overlay';
import { QueryList } from '@angular/core';
import { ScrollStrategy } from '@angular/cdk/overlay';
import { SelectionModel } from '@angular/cdk/collections';
import { Signal } from '@angular/core';
import { SimpleChanges } from '@angular/core';
import { Subject } from 'rxjs';
import { ViewportRuler } from '@angular/cdk/scrolling';
Expand Down
9 changes: 6 additions & 3 deletions goldens/material/select/index.api.md
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@ import { OnInit } from '@angular/core';
import { QueryList } from '@angular/core';
import { ScrollStrategy } from '@angular/cdk/overlay';
import { SelectionModel } from '@angular/cdk/collections';
import { Signal } from '@angular/core';
import { SimpleChanges } from '@angular/core';
import { Subject } from 'rxjs';
import { ViewportRuler } from '@angular/cdk/scrolling';
Expand Down Expand Up @@ -86,11 +87,11 @@ export class MatFormField implements FloatingLabelParent, AfterContentInit, Afte
// (undocumented)
_formFieldControl: MatFormFieldControl<any>;
getConnectedOverlayOrigin(): ElementRef;
getLabelId: i0.Signal<string | null>;
getLabelId: Signal<string | null>;
_getSubscriptMessageType(): 'error' | 'hint';
_handleLabelResized(): void;
// (undocumented)
_hasFloatingLabel: i0.Signal<boolean>;
_hasFloatingLabel: Signal<boolean>;
// (undocumented)
_hasIconPrefix: boolean;
// (undocumented)
Expand Down Expand Up @@ -131,7 +132,7 @@ export class MatFormField implements FloatingLabelParent, AfterContentInit, Afte
_prefixChildren: QueryList<MatPrefix>;
_refreshOutlineNotchWidth(): void;
_shouldAlwaysFloat(): boolean;
_shouldForward(prop: keyof AbstractControlDirective): boolean;
_shouldForward(prop: 'valid' | 'dirty' | 'touched' | 'pending' | 'untouched' | 'pristine' | 'invalid'): boolean;
// (undocumented)
_shouldLabelFloat(): boolean;
get subscriptSizing(): SubscriptSizing;
Expand All @@ -145,6 +146,8 @@ export class MatFormField implements FloatingLabelParent, AfterContentInit, Afte
// (undocumented)
_textSuffixContainer: ElementRef<HTMLElement>;
// (undocumented)
protected _unwrapMaybeSignal<T>(value: T | Signal<T>): T;
// (undocumented)
static ɵcmp: i0.ɵɵComponentDeclaration<MatFormField, "mat-form-field", ["matFormField"], { "hideRequiredMarker": { "alias": "hideRequiredMarker"; "required": false; }; "color": { "alias": "color"; "required": false; }; "floatLabel": { "alias": "floatLabel"; "required": false; }; "appearance": { "alias": "appearance"; "required": false; }; "subscriptSizing": { "alias": "subscriptSizing"; "required": false; }; "hintLabel": { "alias": "hintLabel"; "required": false; }; }, {}, ["_labelChild", "_formFieldControl", "_prefixChildren", "_suffixChildren", "_errorChildren", "_hintChildren"], ["mat-label", "[matPrefix], [matIconPrefix]", "[matTextPrefix]", "*", "[matTextSuffix]", "[matSuffix], [matIconSuffix]", "mat-error, [matError]", "mat-hint:not([align='end'])", "mat-hint[align='end']"], true, never>;
// (undocumented)
static ɵfac: i0.ɵɵFactoryDeclaration<MatFormField, never>;
Expand Down
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